2260 lines
92 KiB
ReStructuredText
2260 lines
92 KiB
ReStructuredText
MiniZinc Change Log
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-------------------
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For detailed bug reports consult the issue tracker at
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https://github.com/MiniZinc/libminizinc/issues.
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.. _v2.5.5:
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`Version 2.5.5 <https://github.com/MiniZinc/MiniZincIDE/releases/tag/2.5.5>`__
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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(released 19 March 2021)
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Changes:
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^^^^^^^^
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- Make min/max on an array of optional variables return a non-optional var,
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behaving as if absent values are not in the array.
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Bug fixes:
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^^^^^^^^^^
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- Insert par array literals in the common subexpression elimination map, fixing
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a FlatZinc code bloat issue (:bugref:`458`).
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Changes in the IDE:
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^^^^^^^^^^^^^^^^^^^
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- Fix editing of custom string parameters so they don't get converted to
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floats.
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- Fix crash on Windows caused when the ``PATH`` environment contains unicode
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characters.
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.. _v2.5.4:
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`Version 2.5.4 <https://github.com/MiniZinc/MiniZincIDE/releases/tag/2.5.4>`__
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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(released 16 March 2021)
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Changes:
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^^^^^^^^
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- Allow empty arrays in global cardinality constraints (:bugref:`440`).
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- Add piecewise_linear for non-continuous intervals.
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- Fail on empty variable domains in agenda.
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- Allow coercion of JSON lists to enum definitions (:bugref:`441`).
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- Update strictly_decreasing with documentation and opt version (:bugref:`454`).
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- Remove MIP-specific ``fzn_less(eq)_bool(_reif).mzn``.
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- Add ``mzn_in_symmetry_breaking_constraint()`` for internal use.
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- Add MIP decompositions for ``lex_less[eq]_*``.
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- Add ``lex_chain_*`` globals, and use them in ``lex2[_strict]``.
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- Improve detection of variable declarations which are actually par to allow
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more use of overloaded par versions of predicates.
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- Update documentation on installation of OR-Tools.
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- Report CPU time in ``solveTime`` statistic for MIP solvers.
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Bug fixes:
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^^^^^^^^^^
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- Fix handling of bad Xpress licenses when collecting extra flags.
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- Don't propagate annotations into annotation calls to infinite recursion.
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- Add missing par opt versions of coercion functions.
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- Revert incorrect renaming of ``has_output_item`` to ``has_outputItem`` in
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model interface output.
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- Fix incorrect grammar specification in documentation (:bugref:`453`).
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- Fix crash when defining enums with no members (:bugref:`443`, :bugref:`444`).
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- Support undefined enums in the type checker.
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- Fix CPLEX solver ID in documentation.
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- Never insert par expressions in the common subexpression elimination map.
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- Fix cv flag propagation when the body of a let or function is cv.
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- Fix equality test for annotations involving indirection.
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- Don't modify the infinite domain of optional variables (:bugref:`456`).
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- Don't immediately evaluate output_only arrays when generating dzn output.
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- Coerce boolean objectives to integers.
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- Don't create copies of global declarations when creating par versions of
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functions.
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- Compile infinite domains with holes into constraints (:bugref:`457`).
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- Use generic flattening inside generators, disallowing free boolean variables
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inside ``in`` expressions (:bugref:`451`).
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- Strip library paths from includes in multi-pass compilation (:bugref:`455`).
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- Canonicalise file names of includes to ensure the same file is not included
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multiple times.
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- Escape paths in printed ``include`` items, fixing backslash problems on
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Windows.
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- Follow ids to declarations when flattening par arrays (:bugref:`448`).
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- Ignore par constants during chain compression.
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- Fix flattening of all-par set literals.
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Changes in the IDE:
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^^^^^^^^^^^^^^^^^^^
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- Fix possible crash due to incorrect use of WriteFile on Windows.
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- Ensure Gecode Gist dependencies are present in the Linux bundle and AppImage
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(:idebugref:`132`).
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- Fix crash when stopping solver during exit.
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- Don't show irrelevant context menu entries in the project explorer.
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- Add support for HTTP/S links in the output pane.
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- Fix crash when saving CP Profiler executions where there is no info
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associated with a node.
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- Show a warning when there are open files which are not part of a MOOC
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submission.
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- Fix double spinbox precision issues (:idebugref:`134`).
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- Include Gecode Gist and CP Profiler dependencies in Snap package.
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- Allow opening of multiple files through the open file menu option.
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- Ensure file dialogs save last path when opening files.
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- Make the escape key close the find/replace dialog when focussed on any child
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widget.
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- Allow setting MOOC submission items as mandatory.
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.. _v2.5.3:
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`Version 2.5.3 <https://github.com/MiniZinc/MiniZincIDE/releases/tag/2.5.3>`__
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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(released 24 November 2020)
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Changes:
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^^^^^^^^
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- Fully reify -> (x != y) in the linear library.
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- Allow printing of comprehensions using introduced variables.
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- Allow increasing/decreasing over multidimensional arrays.
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- Add mzn_ignore_symmetry_breaking_constraints and mzn_ignore_redundant_constraints
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options, allowing the symmetry_breaking_constraint and redundant_constraint
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predicates to be overridden, so that those constraints can be disabled independent
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of the solver library that's being used (:bugref:`429`).
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- Add automatic coercion of strings in JSON input data to enum constants where needed.
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- Add automatic coercion of lists in JSON input data to sets where needed.
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Bug fixes:
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^^^^^^^^^^
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- Fix int_lin_eq_imp in the linear library.
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- Use variable declaration location for invalid type-inst error messages without
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locations.
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- Rewrite par versions of fzn_count_* into var versions, allowing solvers that
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only redefine the bar version to use their built-in propagators even if the
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value to count is fixed at compile time (:bugref:`427`).
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- Add multi-level array construction for enumerated types when outputting in
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JSON format.
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- Ensure that functions can only be used as par if their return type is par
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(:bugref:`431`).
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- Fix parser default location macro, preventing loss of location filenames
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in some cases.
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- Fix parser rule for non-opt sets to give the correct starting location.
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- Fix fzn_bin_packing_capa_reif.mzn and fzn_bin_packing_load_reif.mzn
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(:bugref:`435`).
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- Update decl for binary and unary operators when creating par versions of
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functions (:bugref:`437`).
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- Only throw type errors for enum type identifier mismatch in strict enums mode.
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- Only post cumulative constraints if there is at least one task, preventing an
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assertion about the lower bound from failing.
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Changes in the IDE:
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^^^^^^^^^^^^^^^^^^^
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- Only reset config window item focus if it is still focused, preventing spurious
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changes in focus during code checking.
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- Fix handling of final statuses, including UNSAT (:idebugref:`123`).
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- Remove -s flag support from Gecode Gist solver configuration (:idebugref:`125`).
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- Fix crash when saving a project with no solver selected (:idebugref:`127`).
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- Correctly remove temporary parameter configuration files after use
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(:idebugref:`128`, :idebugref:`129`).
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- Fix the time limit readout in the status bar when solving.
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.. _v2.5.2:
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`Version 2.5.2 <https://github.com/MiniZinc/MiniZincIDE/releases/tag/2.5.2>`__
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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(released 6 November 2020)
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Changes:
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^^^^^^^^
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- Use full reification in int_ne_imp.
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- Add support for redefining 2d element constraints in the solver library.
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- Produce warning when shadowing a variable in a let or comprehension in the
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same function (or toplevel) scope (:bugref:`419`).
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- Rewrite symmetric_all_different to inverse (:bugref:`426`).
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- Add link icons to globals etc in the reference documentation (:bugref:`425`).
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- Make the nodes statistic show the total number of nodes across all restarts
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for SCIP.
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- Add support for multidimensional arrays in counting constraints (:bugref:`413`).
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- Allow .json files to be specified using the --data option (in addition to
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.dzn files).
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- When specifying relative paths inside parameter configuration files,
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resolve them relative to the config file.
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Bug fixes:
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^^^^^^^^^^
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- Correctly add file extension to plugin libraries when omitted.
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- Fix JSON array index coercion when the first index is undefined.
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- Catch ResultUndefined exception when evaluating cv par expressions,
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and turn into undefined result.
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- Fix trailing for lets and comprehensions, resolving some issues with
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recursive functions containing lets and/or comprehensions.
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- Only create par version of functions that do not refer to any toplevel
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variables (:bugref:`418`).
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- Keep correct location information for identifiers.
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- Print warnings from solns2out.
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- Fix the removal of reverse mapped arrays when they contain aliases.
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- Disallow macro replacement when call has reification implementation.
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- Fix the behaviour of passing an invalid version hint to --solver.
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Changes in the IDE:
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^^^^^^^^^^^^^^^^^^^
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- Properly resize extra flags table after adding parameters (:idebugref:`119`).
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- Use the minimal configuration to check the model interface
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(:idebugref:`118`).
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- Allow omitting builtin solver version in project JSON.
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- Don't mark as modified when loading non-synced solver configurations.
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- Ensure the last open configuration in a project is selected when loaded.
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- Fix the default values of solution truncation and output window clearing.
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- Process unrecognised extra flags from old project configurations.
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- Fix watching for modification of the additional data box.
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- Fix the alignment of line numbers.
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- Make behaviour controls more narrow to accommodate smaller window sizes.
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- Defocus config window widgets when updating solver config so values of
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currently edited fields are updated.
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- Pass user input data correctly during compilation.
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- Remove solns2out options from MiniZinc call when compiling.
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.. _v2.5.1:
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`Version 2.5.1 <https://github.com/MiniZinc/MiniZincIDE/releases/tag/2.5.1>`__
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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(released 22 October 2020)
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Changes:
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^^^^^^^^
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- Rewrite alldifferent_except_0 to fzn_alldifferent_except_0, to enable
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solvers to implement that constraint if it is available (:bugref:`414`).
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- Propagate domains for variables even when reverse-mapped. This
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ensures that variables with multiple encodings can be created with
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the tightest possible bounds.
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- Fail instead of producing empty domains when simplifying int_le
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constraints.
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- Allow parsing of nested objects in parameter configuration files.
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- Add --backend-flags option to provide a uniform way of passing flags
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to an underlying solver.
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- Add extra flags support to the MIP solver interfaces, allowing
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parameters to be set in the IDE.
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- Improve automatic detection of the Xpress solver and license file.
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- Allow the use of spaces in the --solver flag argument.
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- Automatically add the last part of the solver ID as a tag.
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- Improve handling of var functions in output, automatically creating
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par versions of var functions if possible.
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Bug fixes:
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^^^^^^^^^^
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- Fix parsing of empty multidimensional JSON arrays.
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- Allow use of --parallel long form option in MIP solvers.
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- Fix item lookup when increasing annotation usage in annotate builtin.
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- Fix JSON array coercion to handle arrays with 1 unknown index.
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- Don't try to access array dimensions for output of empty
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multi-dimensional arrays.
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- Print verbose version information to stderr instead of stdout.
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- Fix context handling when flattening par expressions that contain
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variables (:bugref:`415`).
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- Flatten string expressions if they contain variable parts in
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assert/abort/trace calls.
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- Fix breakage on older versions of Windows due to UTF-8 conversion
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failing.
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- Remove defines_var/is_defined_var annotations when simplifying
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boolean constraints.
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- Fix transfer of cv status from where parts to newly generated
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conjunctions during typechecking.
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- Fix multiple issues with the defined_var / is_defined_var
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annotations.
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- Move all included files from stdlib into solver_redefinitions.mzn, so
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that solver redefinitions are not marked as belonging to the standard
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library (:bugref:`416`).
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- Fix documentation group for standard annotations (:bugref:`417`).
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- Show correct version of solver plugins which have their DLLs
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specified using a command-line parameter (:bugref:`411`).
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- Fix arbitrary flag support for NL solvers.
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- Kill child processes if exception occurs during solns2out on
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Unix-like platforms.
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Changes in the IDE:
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^^^^^^^^^^^^^^^^^^^
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- Fix typo when passing solver statistics option to minizinc (:idebugref:`112`).
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- Fix missing statistics output (:idebugref:`112`).
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- Add support for colour themes (:idebugref:`110`).
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- Don't prompt for saving after adding/removing files from the Untitled
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project.
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- Fix running of compiled FlatZinc files.
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- Show error message when trying to load an invalid configuration file.
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- Ensure all output is sent to the output console, and that fragments
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in standard error output appear when a newline is written to standard
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output (:idebugref:`114`).
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- Fix running of solver configurations from the project explorer.
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- Improve performance of adding a large number of extra flags at once.
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- Add support for 64-bit integer extra flags.
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- Add support for setting both solver backend flags and MiniZinc
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command flags (:idebugref:`113`).
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- Improve interface for adding extra parameters, allowing search/filter
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and multiselection of known parameters.
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.. _v2.5.0:
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`Version 2.5.0 <https://github.com/MiniZinc/MiniZincIDE/releases/tag/2.5.0>`__
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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(released 6 October 2020)
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Language, tool and library changes:
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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- Allow `reading command line arguments from JSON config
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file </doc-2.5.0/en/command_line.html#ch-param-files>`__.
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- Add support for `enum
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constructors </doc-2.5.0/en/modelling2.html#enumerated-types>`__.
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- Put subprocesses in their own process group so that they don't
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receive signals from both the console and MiniZinc.
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- Implement soft and hard process timeouts on Windows, allow triggering
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of shutdown from named pipe on Windows for the IDE.
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- Make MiniZinc unicode-aware on Windows.
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- Better error messages for index set mismatches.
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- Report similar identifiers when matching fails.
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- Better error messages when a call cannot be matched to an existing
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function or predicate.
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- Print error stack if top of stack is a single identifier (i.e., error
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occurred while flattening a variable declaration).
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- Add new separate flags for intermediate and all solutions. -i enables
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intermediate solutions for optimisation problems and
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--all-satisfaction enables all solutions for satisfaction problems.
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Changes in interfaces to solvers:
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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- Solvers which only support intermediate solutions now can now support
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the standard flag -i rather than -a.
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- Restructure the `MiniZinc standard
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library </doc-2.5.0/en/lib-stdlib.html#standard-library>`__.
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Changes in MIP solver backends:
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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- Remove non-conforming -n flags for MIP solver configs standard flags.
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- Improve autodetection of Gurobi DLL.
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- Find Gurobi 9.0.2 when building.
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- Don't create gurobi log.
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- Interface to concurrent solves in Gurobi (--readConcurrentParam).
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- Add -DMinMaxGeneral option for min/max as fzn_array_float_minimum for
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Gurobi
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- Find SCIP 7.0 on Windows
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- Use -Glinear library, built-in cumulative by default for SCIP.
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- Use quadratics in Gurobi and SCIP by default.
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- Add options --xpress-root and --xpress-password for finding Xpress
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installation directory and licence file.
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- Add MIQCP quadratic constraints for Gurobi and SCIP.
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Changes dealing with option types:
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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- Add opt versions of several globals.
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- Define weak equality for var opt bool.
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- Add set_in definitions for var opt int.
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- Add opt versions of enumerated type functions (to_enum, enum_next,
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enum_prev etc).
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- Enable set literals with optional values (which will be ignored),
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including var set literals with var opt int elements.
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- Add opt version of float_dom to stdlib.
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- Change unary not for opt bool to use absorption lifting.
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- Add array2set functions on var opt int arrays.
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- Add opt versions of dom, dom_array and dom_bounds_array.
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- Add missing logical operators to var opt bool.
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Changes in the MiniZinc IDE:
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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- Remove support for the old binary storage format of projects. These
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must be opened and re-saved with version 2.4.3 to remain compatible.
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- Include experimental CP-profiler through the \*MiniZinc\* > \*Profile
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search\* option for supported solvers.
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- Redesign the solver configuration window.
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- Use parameter configuration files rather than passing command-line
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options directly.
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- Show solver configurations and checkers in their own sections in the
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project explorer.
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- Allow multiselection in the project explorer for running particular
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sets of files.
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- Allow MiniZinc to manage subprocesses by itself.
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- Allow non-privileged installs of the IDE on Windows.
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- Correctly remove files from old installations of the IDE on Windows.
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- Enable scroll bars in the preferences dialog to allow for low
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resolution displays.
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- Prompt to save modified files before performing MOOC submissions or
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running models.
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- Fix infinite recursion when a model file for a MOOC submission
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doesn't exist.
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- Use --output-mode checker for MOOC solution submission where
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supported.
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- Fully support unicode on Windows.
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Minor changes:
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^^^^^^^^^^^^^^
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- Clean up code base and format using clang-format and clang-tidy.
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- Update WebAssembly build for new versions of emscripten.
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- Support --cp-profiler option to activate search profiler for IDE.
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- Add --solver-json to output single solver config as JSON.
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- Coerce JSON arrays to match the MiniZinc TypeInst.
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- Add more informative README file.
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- Split shared MIP cpp code into seperate CMake object target.
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- Compile with POSITION_INDEPENDENT_CODE targets by default.
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- Change ASTString to use String Interning.
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- Add included_files output to model interface.
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- Update Bison parsers to be compatible with Bison 3.7.
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- Allow annotating enum declarations.
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- Add support for --c_d and --a_d options to set recomputation
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commit/adaption distance for Gecode presolver.
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- Place float_set_in in a version redefinition documentation group.
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- Place int_pow_fixed into a version redefinitions group.
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- Move set_in(var int, set of int) to the Integer FlatZinc Builtins.
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- Make "show" display contents of arrays rather than array identifiers
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if the array is var
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- Add support for checking statistics after solving has finished.
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- Include preferences set by IDE repository.
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- Add has_ann(var, ann) annotation introspection builtin.
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- Use reverse mapped version for output if FlatZinc contains an aliased
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variable.
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- Remove NDEBUG flag from the compile flags added by CPLEX and Gurobi.
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- Use integer variables in decomposition for array_int_element,
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array_var_int_element, array_int_minimum, and array_int_maximum.
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- More preprocessing for pow(int, int).
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- Add is_same builtin.
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- Add multiobjective annotation for Gurobi and Yuck (in
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std/experimental.mzn).
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- Add --output-mode checker, which outputs exactly the variables that
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are required for a given solution checker.
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- Improve propagation of annotations, especially for redefined forall,
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exists, clause, xor
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- Make omitting RHS from output_only variable a type error.
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- Add support for var set comprehensions
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- Make sets inside set literals a type error (rather than evaluation
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error).
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- Aggregate bool_not into exists/clause, use bool_not(e) for
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clause([],[e]) expressions
|
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- Cleanup the common-subexpression elimination table.
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- Generate bool_not calls (instead of bool_eq_reif) and add both "x=not
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y" and "y=not x" into the CSE map, to avoid double negations.
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- Add arg_max and arg_min builtins for boolean arrays.
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- Remove -O flag from ozn file naming.
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- Allow var items in checkers to be omitted from the model.
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- Add builtins for binary operators that have a var redefinition.
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- When an integer or bool variable has a singleton domain, use the
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value. This enables more overloading to par functions.
|
|
- Check if domain becomes empty when binding variable to value,
|
|
avoiding empty domains (such as 1..0) in FlatZinc.
|
|
- Ignore unknown JSON data items instead of throwing an error.
|
|
- Add trace_logstream and logstream_to_string builtins. These can be
|
|
used for writing model checkers/graders, but also for general
|
|
logging.
|
|
- Clean up CMake configuration
|
|
- Allow any installed solver to be used with the test suite, add
|
|
ability to test for expected ozn output.
|
|
|
|
.. _bug-fixes-1:
|
|
|
|
Bug fixes:
|
|
^^^^^^^^^^
|
|
|
|
- Fix error message for type errors in domains that are integer
|
|
literals (:bugref:`408`).
|
|
- Fix comprehensions over option types, which could cause crashes and
|
|
incorrect flattening (:bugref:`407`).
|
|
- Fix the usage count of annotations added using the annotate function
|
|
- Flatten "in" expressions in comprehensions when required.
|
|
- Check if operator is built-in after evaluating arguments, to make
|
|
sure it is rewritten into the correct predicate.
|
|
- Use dom(x) instead of lb(x)..ub(x) for opt int.
|
|
- Use eval_par to compute bounds for par expressions since they might
|
|
be opt.
|
|
- Use library defined operators where available.
|
|
- Fix -O flag parsing for optimisation level.
|
|
- Fix par set inequality calculation.
|
|
- Flatten domain expressions that contain variables.
|
|
- Catch ResultUndefined when flattening an array with an undefined
|
|
expression in a generator
|
|
- Fix source paths in MD5 generation scripts.
|
|
- Fix crash when reporting undefined result in assignment generator.
|
|
- Only add coercion for normal generators, not for assignment
|
|
generators.
|
|
- Check output var status on actual item being removed.
|
|
- Include absolute path instead of filename in multipass processing.
|
|
- Coerce comprehension generators if necessary, so that slicing
|
|
notation can be used there.
|
|
- Fix copying of comprehensions with followIds.
|
|
- Fix the method signature of printStatistics for Geas.
|
|
- Ensure the definition of reverse mappers are copied into the output
|
|
model.
|
|
- Print solns2out statistics to stdout to comply with MiniZinc spec.
|
|
- Minor doc-fix for global_cardinality_closed.
|
|
- Make statistics output comply with MiniZinc spec.
|
|
- Fix reverse function to work with empty arrays
|
|
- Fix the coercion of boolean sum in aggregation.
|
|
- Remove eval_par on var expressions in show builtin.
|
|
- Fix the table construction for the Geas solver interface
|
|
- Fixed wrong sign in Boolean linear constraints in Geas solver
|
|
interface.
|
|
- Fix istrue and isfalse by using flat_cv_exp if necessary.
|
|
- Fix the excess flattening of items marked for removal.
|
|
- Do not add newline to output when killing FlatZinc solver process,
|
|
since this may be in the middle of a line
|
|
- Fix typo in loop for Geas solver instance.
|
|
- Don't call doAddVars when there are no variables, fixing a crash in
|
|
MIP solvers for empty models.
|
|
- Do not copy type of lhs onto rhs when parsing solutions. This tagged
|
|
some literals as cv(), which broke the evaluation.
|
|
- Fix flattening of all par set literals.
|
|
- Fix error macro to be compatible with newer versions of Bison (:bugref:`389`).
|
|
- Fix printing of if-then-else expressions without an else branch.
|
|
- Fix allowed solvers option in test suite.
|
|
- Make bind only create an int_eq constraint if a variable has a
|
|
reverse mapper.
|
|
- Fix automatic coercions to keep cv type attribute of their argument
|
|
(:bugref:`387`).
|
|
- Fix copying of output_only variables to the output model.
|
|
- Only print checker output for unique solutions.
|
|
- Fix rewriting of lin_exp into int/float_lin_eq.
|
|
- Fix flattening of calls and let expressions that have par type but
|
|
contain var expressions.
|
|
- Use eval_bool instead of eval_par for boolean evaluation.
|
|
- Remove the direct assignment to a domain if it has a reverse mapper.
|
|
- Fix arg_max and arg_min for array index sets not starting at 1.
|
|
- Add missing set_superset_reif FlatZinc predicate.
|
|
- Fix counting of non-fixed variables in Boolean constraints. Could
|
|
previously lead to incorrect simplifications.
|
|
- Enable eval_floatset for SetLits that contain an IntSetVal. This is
|
|
used during chain compression and could previously result in
|
|
incorrect domains.
|
|
- Fix bugs in chain compressor caused by modifying multimaps while
|
|
iterating over them.
|
|
- Fix crash when cleaning up after running builtin Gecode.
|
|
- MIPdomains: don't assume equations have no literals.
|
|
- Only fix domain after flattening bool_eq.
|
|
- Only return singleton domain as value for non-optional variables.
|
|
- When evaluating identifier that is bound to a fixed value, check that
|
|
the value is inside the domain to correctly detect model
|
|
inconsistency.
|
|
- Add missing assert and trace builtin overloads.
|
|
- Flatten expressions that may contain variables in par where clauses.
|
|
- Fix segmentation fault when the declaration of an array is passed to
|
|
setComputedDomains with the -g parameter.
|
|
- Consider single-valued domain variables to be fixed
|
|
- Add missing definition of to_enum for arrays of sets.
|
|
- Evaluate partiality of arguments even if call was already in CSE
|
|
table (:bugref:`374`).
|
|
|
|
.. _v2.4.3:
|
|
|
|
`Version 2.4.3 <https://github.com/MiniZinc/MiniZincIDE/releases/tag/2.4.3>`__
|
|
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
(released 4 March 2020)
|
|
|
|
.. _changes-1:
|
|
|
|
Changes:
|
|
^^^^^^^^
|
|
|
|
- Enable CPLEX 12.10.
|
|
- Add checker output to generated output items.
|
|
- Short-circuit evaluation for mixed par/var conjunctions,
|
|
disjunctions, and clauses.
|
|
- Add inverse_in_range global.
|
|
- Pretty printing set ranges now uses union instead of ++ to be
|
|
compatible with DZN.
|
|
- Add array2set for par bool and float arrays
|
|
- The \_objective variable is no longer added to FlatZinc input files.
|
|
- JSON representation of sets with ranges can now be parsed (previously
|
|
they could only be output).
|
|
- Check index sets to arguments of global_cardinality_low_up.
|
|
- Xpress and SCIP are not compiled as plugins and no longer require
|
|
recompilation to enable.
|
|
- If-then-else for opt are no longer written in terms of the non-opt
|
|
version, allowing them to return absent.
|
|
|
|
.. _bug-fixes-2:
|
|
|
|
Bug fixes:
|
|
^^^^^^^^^^
|
|
|
|
- Fix checking of domains and index sets in par arrays inside lets.
|
|
- Remove duplicate call stack items to improve error messages.
|
|
- Ignore absent values when computing domains.
|
|
- Generate call for actual binary operator (after optimising double
|
|
negation). Fixes :bugref:`364`.
|
|
- Fix non-associative operators on optional values.
|
|
- Only output optional parameters in model interface if they were
|
|
undefined (rather than assigned to <>).
|
|
- Fix some issues with evaluating par opt expressions.
|
|
- Make solution checkers work for multi-dimensional arrays and arrays
|
|
with enum index sets
|
|
- Fix Boolean aggregation for expressions that are defined recursively.
|
|
- Use correct index set for nosets set_lt and similar (partial fix for
|
|
:bugref:`369`)
|
|
- Fix coercion of sets to arrays (previously, coercing a set of X to an
|
|
array of X to an array of Y did not work correctly).
|
|
- Fix infinite loop when printing infinite set range
|
|
- Add assertion so that array2set can only be used for arrays with
|
|
bounds (:bugref:`370`, :bugref:`371`).
|
|
- Fix typing and pretty printing of par bool sets.
|
|
- Use output_array dims for output vars in FlatZinc files (previously,
|
|
a type-checker error would occur when running a solver through
|
|
MiniZinc on a FlatZinc file with multidimensional arrays).
|
|
- The Xpress backend was made functional again.
|
|
- Fix segmentation fault in output_only type-checking.
|
|
- Compute correct array enum type for array slices (:bugref:`372`).
|
|
- Fix behaviour of using undefined expressions in var comprehensions
|
|
guarded against by where clauses (previously, these undefined
|
|
expressions would bubble up regardless of the where clause,
|
|
constraining the model).
|
|
- IDE: Disable menu items that don't make sense when all tabs are
|
|
closed, fix behaviour of stop button when all tabs closed (fixes
|
|
several crashes).
|
|
- IDE: Add x86_64 suffix to linux package name (:idebugref:`96`).
|
|
- IDE: Make boolean extra solver options with a default of true
|
|
functional.
|
|
- IDE: Only read linter results if it exited normally (:idebugref:`97`).
|
|
- IDE: Resolve paths in \_mooc to paths (allowing submission of models
|
|
in subdirectories).
|
|
|
|
.. _v2.4.2:
|
|
|
|
`Version 2.4.2 <https://github.com/MiniZinc/MiniZincIDE/releases/tag/2.4.2>`__
|
|
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
(released 10 January 2020)
|
|
|
|
.. _changes-2:
|
|
|
|
Changes:
|
|
^^^^^^^^
|
|
|
|
- The test suite is now integrated into the continuous integration
|
|
system.
|
|
|
|
.. _bug-fixes-3:
|
|
|
|
Bug fixes:
|
|
^^^^^^^^^^
|
|
|
|
- Fix flattening of negated disjunctions (:bugref:`359`).
|
|
- Fix simplification of Boolean constraints (repeated simplification
|
|
could sometimes crash).
|
|
- Fix memory management during flattening of conditionals (:bugref:`358`).
|
|
- Fix type inference for rewriting of sums into count constraints, and
|
|
only apply the rewriting for var type-insts.
|
|
- Fix handling of solution checkers (these used to produce spurious
|
|
error messages).
|
|
- IDE: Fix syntax highlighting of keywords, and add syntax highlighting
|
|
for interpolated strings.
|
|
- IDE: Redraw when switching to/from dark mode, and fix dark mode
|
|
header colours.
|
|
- IDE: Fix "Select all" menu item.
|
|
|
|
.. _v2.4.1:
|
|
|
|
`Version 2.4.1 <https://github.com/MiniZinc/MiniZincIDE/releases/tag/2.4.1>`__
|
|
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
(released 20 December 2019)
|
|
|
|
.. _changes-3:
|
|
|
|
Changes:
|
|
^^^^^^^^
|
|
|
|
- Improve compiler optimisation for some linear, multiplication and
|
|
Boolean constraints.
|
|
- Improved translation of lex and all_equal constraints when the arrays
|
|
have no or only one variable.
|
|
- IDE: Display error message when submission to MOOC provider fails.
|
|
- IDE: Make "previous tab" and "next tab" actions cycle rather than
|
|
stop at first/last tab.
|
|
|
|
.. _bug-fixes-4:
|
|
|
|
Bug fixes:
|
|
^^^^^^^^^^
|
|
|
|
- Fixed regular expression constraint for expressions containing
|
|
negated character classes (^ operator).
|
|
- Fix element constraint in nosets.mzn library when set domains are not
|
|
contiguous.
|
|
- Correctly identify Windows paths starting with // or \\\\ as absolute
|
|
(this enables the parser to open files stored on network drives).
|
|
- Use set_in constraints (rather than int_in) for internal Gecode-based
|
|
presolver. This fixes some issues when compiling with -O3.
|
|
- The optimisation phase of the compiler now fully substitutes par bool
|
|
variables (these can be introduced into the FlatZinc during multipass
|
|
compilation). (:bugref:`357`)
|
|
- Fixed the reference counting for variables that are re-used in
|
|
multipass compilation. (:bugref:`357`)
|
|
- Remove incorrect error handling when parsing from strings rather than
|
|
files. Partially fixes (:bugref:`357`)
|
|
- Made the is_fixed builtin work for more types. (:bugref:`356`)
|
|
- Enable rewriting of sum(i in x)(i=c) op d and count(x,y) op z into
|
|
global counting constraints.
|
|
- Split up count global constraints into separate files for reified
|
|
versions.
|
|
- Use contiguous range for array index set in set_lt for nosets.mzn.
|
|
- Negate results of conditionals if required. (:bugref:`355`)
|
|
- Partiality of conditional needs to be translated in root context
|
|
(even if conditional itself is negated). (:bugref:`355`)
|
|
- Don't copy function into output again if it was already copied (and
|
|
made par) before. (:bugref:`323`)
|
|
- Define card function on var sets in terms of set_card FlatZinc
|
|
builtin.
|
|
- Don't set bounds for set variables in internal Gecode presolver.
|
|
- IDE: Fix shift left and shift right indentation behaviour when
|
|
selecting text backwards.
|
|
- IDE: Fix OpenSSL library in binary distribution to enable update
|
|
checks and submission to MOOCs again.
|
|
|
|
.. _v2.4.0:
|
|
|
|
`Version 2.4.0 <https://github.com/MiniZinc/MiniZincIDE/releases/tag/2.4.0>`__
|
|
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
(released 13 December 2019)
|
|
|
|
.. _changes-4:
|
|
|
|
Changes:
|
|
^^^^^^^^
|
|
|
|
- The compiler now detects counting constraints in expressions such as
|
|
count(i in x)(i=3) <= 4 and rewrites them into global counting
|
|
constraints. This is now the preferred way to specify counting. The
|
|
atmost/atleast/exactly constraints on integer variables have been
|
|
deprecated, and versions of count predicates with par variables have
|
|
been added. FlatZinc solvers that supported atmost/atleast/exactly
|
|
should now support the corresponding fzn_count_?_par predicates.
|
|
- The compiler now supports the command line option
|
|
--output-detailed-timing, which provides timing information for each
|
|
toplevel constraint item, or for each line of code when used in
|
|
conjunction with the --keep-paths option.
|
|
- The library now contains annotations for deprecated library
|
|
functions.
|
|
- A par version of the inverse function has been added (include
|
|
inverse_fn.mzn to use it).
|
|
- The common case of sums of optional variables is now handled more
|
|
efficiently. This case often arises from generator expressions with
|
|
variable where clauses.
|
|
- Added set_to_ranges built-ins to enable efficient iteration over
|
|
sets. These are used to implement set_in for float variables, which
|
|
was missing before.
|
|
- The Gurobi and CPLEX backends now support the --random-seed command
|
|
line option.
|
|
- The Gurobi and CPLEX backends now use nodefile for search trees
|
|
exceeding 500 MB (--nodefilestart can change this value and
|
|
--nodefiledir the folder.)
|
|
- The MIPDomains optimisations have been switched back on by default.
|
|
The optimisations have also been strengthened for some special cases.
|
|
- Without the MIPdomains postprocessing, linearisation of variable
|
|
domains with holes now uses set_in instead of individual not-equal
|
|
constraints, which may result in more compact FlatZinc.
|
|
- Linearisation of multiplication can now consider the exact domain of
|
|
a factor.
|
|
- The product functions have been made non-recursive in order to
|
|
support longer arrays.
|
|
- Bounds inference for results of if-then-else expressions has been
|
|
improved.
|
|
- Support for optional float variables has been added.
|
|
- The interfaces to CBC, CPLEX and Gurobi now report correctly that
|
|
they support verbose output during solving (so that the "verbose
|
|
solving" option is available from the MiniZinc IDE).
|
|
- IDE: Parse timing and statistics output produced by compiler, and
|
|
display as profiling information next to each line in the model.
|
|
- IDE: Enable run/compile action on data files. This automatically
|
|
selects the model file if there is only one, or presents a dialog for
|
|
selecting the model if there are multiple.
|
|
- IDE: Select first data file in parameter dialog if there was no
|
|
previous selection, and always focus parameter dialog.
|
|
- IDE: Highlight current line.
|
|
- IDE: Support .json as file extension for data files.
|
|
- IDE: Remember whether wrap around, case sensitivity and regular
|
|
expression was selected in find/replace dialog, pre-select the
|
|
find/replace text when find/replace widget is openend, and close
|
|
find/replace widget when ESC is pressed while editor has focus.
|
|
|
|
.. _bug-fixes-5:
|
|
|
|
Bug fixes:
|
|
^^^^^^^^^^
|
|
|
|
- Fixed output handling on Windows (output is now processed on the main
|
|
thread, so that exceptions thrown during output are printed
|
|
correctly, and memory management is thread safe).
|
|
- Fixed decomposition of reified mdd constraint, and strengthened
|
|
decompositions of mdd and cost_mdd.
|
|
- Fix handling of variable re-definitions (e.g. converting sets to
|
|
arrays of bools), which would previously sometimes result in
|
|
variables being removed although they were required for output, or
|
|
the reverse mapping function not being available in the output model.
|
|
- Include regular.mzn from regular_regexp.mzn. (:bugref:`351`)
|
|
- Inlining of function calls has been moved from the flattener into the
|
|
type checker, and it now is more strict about which functions can be
|
|
inlined in order to avoid overloading issues.
|
|
- Updated fzn_count_{neq,leq,lt,geq,gt},
|
|
fzn_global_cardinality_low_up{,_reif} to use use the count_eq
|
|
predicate. (:bugref:`334`, :bugref:`335`)
|
|
- Fixed the documentation for several constraints, which did not
|
|
display as bullet point lists as intended.
|
|
- Copy function/predicate declarations into FlatZinc without
|
|
annotations, since most FlatZinc parsers would not expect annotations
|
|
and fail to parse.
|
|
- Process right hand side of par VarDecls to make sure any identifiers
|
|
it uses are copied into the output model. Fixes :bugref:`336`.
|
|
- Fix type checking for conditionals where the else branch has enum
|
|
type but the then branch has int type.
|
|
- Make the deopt function return correct enum instead of int type.
|
|
- Fix for path handling when 'needRangeDomains' is active. Avoids
|
|
infinite recursion in the compiler.
|
|
- Fix race condition in temporary file generator for Windows. (:bugref:`349`)
|
|
- Register fzn\_ names for Gecode presolver. Fixes command line flags
|
|
-O3 and above.
|
|
- Fix par evaluation of float and bool set comprehensions.
|
|
- Fix documentation of array_bool_xor. Fixes :docbugref:`13`.
|
|
- Fix the round() built-in to correctly round negative numbers
|
|
- Fix computation of intersection of domains when assigning an array to
|
|
an array variable. Fixes :bugref:`310`.
|
|
- Add defines_var annotations for functional global constraints. Fixes
|
|
:bugref:`345`.
|
|
- Add set_lt_reif/set_le_reif to flatzinc builtins library. Fixes :bugref:`338`.
|
|
- Clarify set order based on spec. Fixes :bugref:`339`.
|
|
- Don't return already removed VarDecl objects from CSE. Fixes :bugref:`346`.
|
|
- Do not post y!=0 constraint if 0 is not in the domain (workaround for
|
|
a limitation in the handling of basic float constraints). Fixes :bugref:`344`.
|
|
- Help type checker by making deopt/occurs argument types explicit.
|
|
Fixes :bugref:`331`.
|
|
- Fix transfer of domains when aliasing one variable to another
|
|
- MIP: fix for aux_float_ne_if_1
|
|
- MIP: int_(eq/ne)_imp: don't force eq_encode without MIPdomains
|
|
- Fix a typo in the definition of fzn_at_least_int{,_reif}
|
|
- Fix dependency problem in the gecode_presolver table specification
|
|
- Add seq_precede_chain.mzn to globals.mzn. Fixes :bugref:`332`.
|
|
- Don't assign right hand side of set variables if domain is singleton.
|
|
Fixes :bugref:`330`.
|
|
- Don't invalidate float bound just because an expression contains an
|
|
integer.
|
|
- Fix copying of let expressions.
|
|
- Put lexer and parser helper functions into MiniZinc namespace to
|
|
avoid linker issues. Fixes :bugref:`325`.
|
|
- Reset array index sets defined in lets inside recursive function
|
|
calls.
|
|
- Arrays copied into output model need to have par type-inst. Fixes :bugref:`322`.
|
|
- Don't complain when same function is registered twice. Fixes :bugref:`323`.
|
|
- Fix partiality handling of if-then-else expressions.
|
|
- Track whether variable is used in an output array before making
|
|
decision to compress implication chains. Fixes :bugref:`318`.
|
|
- IDE: Fix dark mode detection on macOS 10.15, improve dark mode colors
|
|
a bit and fixed some dark mode bugs.
|
|
- IDE: Make background compilation of a model (used to display syntax
|
|
and type errors) a bit more stable.
|
|
- IDE: Avoid infinite loop in wrap around replace all.
|
|
- IDE: Fix memory management for HTML visualisation windows, and resize
|
|
docked HTML visualisation widgets to take up equal space.
|
|
|
|
.. _v2.3.2:
|
|
|
|
`Version 2.3.2 <https://github.com/MiniZinc/MiniZincIDE/releases/tag/2.3.2>`__
|
|
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
(released 12 September 2019)
|
|
|
|
.. _changes-5:
|
|
|
|
Changes:
|
|
^^^^^^^^
|
|
|
|
- Add warm starts and subtour cuts to CBC interface.
|
|
- Add documentation and assertion requiring that mdds are
|
|
deterministic, and add nondeterministic variant of mdd constraint.
|
|
- Add -s to the standard flags supported by MIP interfaces.
|
|
- Add flag --output-output-item to include user specified output item
|
|
in the formatted JSON and DZN output.
|
|
|
|
.. _bug-fixes-6:
|
|
|
|
Bug fixes:
|
|
^^^^^^^^^^
|
|
|
|
- Fix a bug that could leave unused variables in the resulting
|
|
FlatZinc.
|
|
- bounded_dpath should rewrite to fzn_bounded_dpath. Fixes :bugref:`300`.
|
|
- Fix definition of sum_set.
|
|
- Check if overloaded function required for output. Fixes :bugref:`303`.
|
|
- Move regular constraint with set argument to its own file.
|
|
- Flatten assignment generators if necessary.
|
|
- Simplify fzn_value_precede_chain_int and avoid use of element
|
|
predicate. Fixes :bugref:`307`.
|
|
- Only initialise par opt variables as absent if they are not arrays.
|
|
- Fix the description of the neural_net predicate.
|
|
- Fix regular constraint with regular expressions (stopped working in
|
|
2.3.0).
|
|
- Fix the model interface output to include the same variables as the
|
|
generated output statement.
|
|
- Fix CSE for removed variable declarations. Could lead to reified
|
|
constraints not being compiled correctly when the control variable
|
|
got fixed to true.
|
|
|
|
.. _v2.3.1:
|
|
|
|
`Version 2.3.1 <https://github.com/MiniZinc/MiniZincIDE/releases/tag/2.3.1>`__
|
|
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
(released 10 July 2019)
|
|
|
|
.. _bug-fixes-7:
|
|
|
|
Bug fixes:
|
|
^^^^^^^^^^
|
|
|
|
- Report error when trying to assign an array literal to an array
|
|
variable with incompatible index set.
|
|
- Fix partial evaluation of expressions, so that only par expressions
|
|
are fully evaluated. Fixes :bugref:`298`.
|
|
- Remove carriage returns when reading piped solver output on Windows.
|
|
- Canonicalize paths of executables to avoid spurious warnings about
|
|
multiple executables for the same solver.
|
|
- Add implementations for != on arrays.
|
|
- Compute quotient bounds before decomposition of int_div in
|
|
linearisation library.
|
|
- Propagate domain constraints on variables that are aliased
|
|
(previously domain constraints could get lost).
|
|
- Propagate domain constraints from left-hand-side to right-hand-side
|
|
in variable assignments.
|
|
- piecewise-linear: reuse decomposition for X when only Y-values
|
|
change.
|
|
- nosets: add set_in_imp(var set) and simplify set_in_reif, set_eq(var
|
|
set, var set).
|
|
- linearisation: improved compilation of set_in constraints.
|
|
- MiniZinc IDE: Remove incorrect symbolic link and fix qt.conf for some
|
|
bundled distributions.
|
|
- MiniZinc IDE: Fix check for availability of dark mode on older
|
|
versions of macOS.
|
|
- MiniZinc IDE: Fix a typo in the cheat sheet.
|
|
- MiniZinc IDE: Provide more robust solution for checking the model
|
|
parameters, which will get rid of some "internal error" messages.
|
|
- MiniZinc IDE: Always show directory selection dialog in the Windows
|
|
installer. Addresses :idebugref:`89`.
|
|
- MiniZinc IDE: Improved the configuration files for some bundled
|
|
solvers, provides nicer configuration interface.
|
|
|
|
.. _v2.3.0:
|
|
|
|
`Version 2.3.0 <https://github.com/MiniZinc/MiniZincIDE/releases/tag/2.3.0>`__
|
|
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
(released 26 June 2019)
|
|
|
|
Major changes:
|
|
^^^^^^^^^^^^^^
|
|
|
|
- The compiler can now generate FlatZinc with half reified constraints.
|
|
See
|
|
https://www.minizinc.org/doc-2.3.0/en/fzn-spec.html#reified-and-half-reified-predicates
|
|
for more details.
|
|
- The standard library of global constraints has been reorganised,
|
|
making it easier for solvers to override just the bits that they
|
|
support. See
|
|
https://www.minizinc.org/doc-2.3.0/en/fzn-spec.html#solver-specific-libraries
|
|
for more details.
|
|
- There is experimental support for solvers that can read AMPL NL
|
|
files. See
|
|
https://www.minizinc.org/doc-2.3.0/en/solvers.html#non-linear-solvers
|
|
for details.
|
|
|
|
.. _minor-changes-1:
|
|
|
|
Minor changes:
|
|
^^^^^^^^^^^^^^
|
|
|
|
- The JSON input and output has been improved, with full support for
|
|
enums and optional types.
|
|
- A new compiler option -g has been added, which turns variable domain
|
|
changes into constraints (useful for debugging models).
|
|
- The SCIP interface has been updated, with support for indicator
|
|
constraints, bounds disjunctions and a native cumulative constraint.
|
|
- Error reporting has been improved, with location information
|
|
available for errors in par float expressions as well as include
|
|
items.
|
|
- The timeout command line parameter now also applies to compilation
|
|
itself (:bugref:`281`).
|
|
- Operations on par float values are now checked for overflows.
|
|
- The arg_min/arg_max constraints have been improved, with new special
|
|
versions for Boolean variables, and a better standard decomposition.
|
|
- if-then-else-endif expressions with variable conditions are now
|
|
compiled to a predicate call (rather than handled by the compiler),
|
|
which enables solver libraries to implement these as native
|
|
constraints or special decompositions.
|
|
- Dividing a variable by a constant is now translated as a
|
|
multiplication (to keep the constraints linear).
|
|
- A new piecewise_linear predicate has been added to the library to
|
|
make it easier to specify piecewise linear constraints.
|
|
- Print number of solutions as mzn-stat after solving (:bugref:`244`).
|
|
- Make search annotations work for arbitrary array index sets.
|
|
- MiniZinc IDE: The IDE will now check MiniZinc code for syntax and
|
|
type errors, and the editor performs simple code completion for
|
|
MiniZinc keywords
|
|
- MiniZinc IDE: The find/replace dialog is now an inline widget and
|
|
supports incremental search.
|
|
- MiniZinc IDE: Now supports dark mode on macOS.
|
|
- MiniZinc IDE: Add support for extra solver flags (parsed from solver
|
|
configuration).
|
|
|
|
.. _bug-fixes-8:
|
|
|
|
Bug fixes:
|
|
^^^^^^^^^^
|
|
|
|
- Translate let expressions that contain constraints or variables as
|
|
var type-inst. Fixes :bugref:`263`.
|
|
- Fix JSON array parsing by counting elements instead of commas.
|
|
- Fix parsing of the -p flag (:bugref:`271`).
|
|
- Fix type checking for array declarations with single enum type inst
|
|
identifier. E.g. array[$$T] of $U previously matched any
|
|
multi-dimensional array, and now only matches one-dimensional arrays
|
|
with any enum index set.
|
|
- Fix computation of function return type when using type inst
|
|
variables (:bugref:`272`).
|
|
- Evaluate each variable declaration only once in a par let expression.
|
|
- Check domain constraints on variable declarations in par let
|
|
expressions.
|
|
- Try .exe/.bat on windows when using (constructed) absolute paths.
|
|
- Fix array slicing to support empty slices (:bugref:`275`).
|
|
- Fix a bug in the parser that could cause crashes on certain syntax
|
|
errors.
|
|
- Fix the type of bool2int for arrays.
|
|
- Initialise counter for introduced variable ids based on names in
|
|
original model. This avoids reusing variable names if the user model
|
|
contains names such as X_INTRODUCED_0_.
|
|
- Fix compilation of nested clause/exist constraints, and improve
|
|
handling of negation. Tries to use primitive negation instead of
|
|
creating negated constraints. Should help with half-reification by
|
|
creating more positive contexts.
|
|
- Reorder fields in basic data structures to reduce padding on 64 bit
|
|
platforms (improved memory footprint).
|
|
- Perform type coercion after desugaring array slicing.
|
|
- Translate arguments to bool2int, exists, forall in positive context
|
|
even if those functions are redefined.
|
|
- Don't evaluate par array literals twice (inefficient, and can lead to
|
|
incorrect results when using random number generators).
|
|
- Terminate child processes when minizinc process is terminated by
|
|
signal.
|
|
- Fix function return value array index check for empty arrays (:bugref:`286`).
|
|
- Fix translation of constant false where clause in array
|
|
comprehension.
|
|
- Report error when json multi-dimensional array is not rectangular.
|
|
- Check index sets of function arguments (:bugref:`273`).
|
|
- Ignore partiality variables from CSE table when compiling \_reif and
|
|
\_imp predicates (:bugref:`269`).
|
|
- Flatten comprehensions with variable generators or where conditions
|
|
before evaluating any par functions on them (:bugref:`259`).
|
|
- Add missing redefinitions of basic operators and search annotations
|
|
for optional integers.
|
|
- Resolve filenames given on the command line relative to working
|
|
directory, and warn if file in working directory has same name as
|
|
included file from the library. Fixes :bugref:`276`.
|
|
- Update nosets library with a valid redefinition of set_less over
|
|
booleans.
|
|
- Fix translation of showJSON (:bugref:`294`).
|
|
- Only apply set2array coercion for supported types, otherwise report
|
|
error (:bugref:`295`).
|
|
- Improve special case reasoning for abs on strictly negative
|
|
variables.
|
|
- Add bounds for floating point min/max result in the standard library.
|
|
- MiniZinc IDE: Ensure cursor is visible (editor scrolls to cursor
|
|
position) when pressing tab or enter. Fixes :idebugref:`71` :idebugref:`71`.
|
|
- MiniZinc IDE: Re-dock configuration editor when closing un-docked
|
|
window.
|
|
- MiniZinc IDE: Handle quotes when parsing additional solver command
|
|
line arguments. Fixes :idebugref:`77`.
|
|
- MiniZinc IDE: Add workaround for the missing libnss requirements.
|
|
Fixes :idebugref:`79`.
|
|
- MiniZinc IDE: Allow spaces in $DIR in MiniZincIDE.sh Fixes :idebugref:`81`.
|
|
|
|
.. _v2.2.3:
|
|
|
|
`Version 2.2.3 <https://github.com/MiniZinc/MiniZincIDE/releases/tag/2.2.3>`__
|
|
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
(released 31 October 2018)
|
|
|
|
.. _bug-fixes-9:
|
|
|
|
Bug fixes:
|
|
^^^^^^^^^^
|
|
|
|
- Fix some typos in the library documentation.
|
|
- Fix solution checking.
|
|
- Fix line numbers in parsed locations on 64 bit platforms.
|
|
- Fix bounds computation for calls.
|
|
- Fix translation of var where clauses with more than 3 par components.
|
|
- IDE: Only run solution checker if it is enabled in the solver
|
|
configuration dialog.
|
|
|
|
.. _v2.2.2:
|
|
|
|
`Version 2.2.2 <https://github.com/MiniZinc/MiniZincIDE/releases/tag/2.2.2>`__
|
|
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
(released 26 October 2018)
|
|
|
|
.. _changes-6:
|
|
|
|
Changes:
|
|
^^^^^^^^
|
|
|
|
- Some changes to the optimisation phase of the compiler, to take into
|
|
account more variables and constraints.
|
|
- Preliminary support for MIP cuts based on graph algorithms (only
|
|
available when compiled with boost C++ libraries; not part of the
|
|
binary distribution).
|
|
- Set Release as default build type when nothing is specified (for
|
|
CMake platforms that do not support multiple build types, like
|
|
Makefiles).
|
|
- Add builtins outputJSON() and outputJSONParameters() for creating an
|
|
array of strings that capture the output and parameters of the model
|
|
as JSON.
|
|
- On Linux and macOS, add /usr/share/minizinc/solvers and
|
|
/usr/local/share/minizinc/solvers to list of paths where solver
|
|
configuration files can be placed.
|
|
- Add OSICBC_INCLUDEDIR and OSICBC_LIBDIR cmake flags.
|
|
- Output search paths for solver configurations using --solvers command
|
|
line option.
|
|
- Add support for Gurobi 8.1
|
|
- Support parsing from stdin and files at the same time.
|
|
- IDE: Add line/column display in status bar.
|
|
- IDE: Optional parameters don't have to be defined in input dialog.
|
|
- IDE: Provide mzn-json-init / mzn-json-init-end handlers to initialise
|
|
HTML window before first solution is produced.
|
|
- IDE: Add version information and minimum system version into
|
|
Info.plist on macOS.
|
|
- IDE: Manage multiple open visualisation windows, and implement
|
|
re-solve function that can be initiated from a visualisation.
|
|
- Binary bundle: Gecode updated to version 6.1.0, Chuffed updated to
|
|
version 0.10.3
|
|
|
|
.. _bug-fixes-10:
|
|
|
|
Bug fixes:
|
|
^^^^^^^^^^
|
|
|
|
- Fix crash when flattening top-level array comprehensions with var
|
|
where clauses.
|
|
- Support input files with more than 1M lines.
|
|
- Special case handling for array literals in top-level foralls:
|
|
flatten in root context.
|
|
- Fix translation of if-then-else for branches with undefined right
|
|
hand sides.
|
|
- Only propagate defines_var annotation to the variable that's actually
|
|
being defined (not others that arise from the same decomposition).
|
|
- Don't flatten arguments of predicates like
|
|
symmetry_breaking_constraint.
|
|
- Remove output_var and output_array annotations from user models
|
|
(these could cause crashes).
|
|
- Fix precedences for weak operators (~+, ~-, ~=, ~*).
|
|
- Fix min and max for opt var arrays to work when the bounds of the
|
|
arrays are unknown.
|
|
- Fix a bug in bounds computations for function calls.
|
|
- Add missing superset FlatZinc builtin.
|
|
- Fix includes in file values.hh for some platforms.
|
|
- Fix a garbage collection issue when printing solutions.
|
|
- Deal with the case that a variable that's required for output is
|
|
assigned to a par variable.
|
|
- Throw type error when an array has only absent values.
|
|
- Flatten all arrays in FlatZinc, also those coming from functional
|
|
definitions.
|
|
- Use list of strings as mzn_solver_path entry in the preferences json
|
|
file.
|
|
- Fix crash when output variable is defined using recursive function
|
|
- IDE: Fix race condition in constructor of HTMLWindow.
|
|
|
|
.. _v2.2.1:
|
|
|
|
`Version 2.2.1 <https://github.com/MiniZinc/MiniZincIDE/releases/tag/2.2.1>`__
|
|
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
(released 6 September 2018)
|
|
|
|
.. _changes-7:
|
|
|
|
Changes:
|
|
^^^^^^^^
|
|
|
|
- all_different, all_equal, {int,set,float,bool}_search now accept
|
|
multi-dimensional arrays.
|
|
- Add exponentiation operator (^).
|
|
- Improve layout of generated library documentation for some
|
|
constraints.
|
|
- Relax typechecking to allow assignment of empty array ([]) to
|
|
multi-dimensional array variables. This is required to make empty
|
|
arrays work in JSON data files.
|
|
- Enumerated types can now be initialised using lists of strings. This
|
|
enables enumerated type support in JSON.
|
|
|
|
.. _bug-fixes-11:
|
|
|
|
Bug fixes:
|
|
^^^^^^^^^^
|
|
|
|
- Cumulative constraint for linear solvers now accepts empty arrays.
|
|
- show2d/show3d functions now do not add quotes around array elements
|
|
and work for empty arrays.
|
|
- Add support for slicing of arrays with enumerated types.
|
|
- Fix slicing of 1d arrays.
|
|
- Fix bounds computation for float variable declarations.
|
|
- When FlatZinc solver is terminated due to a timeout, do not report
|
|
this as an error.
|
|
- Fix pretty-printing of multi-dimensional arrays where dimensions
|
|
other than the first one are empty.
|
|
- Add support for where clauses on generator assignment expressions.
|
|
- MiniZinc IDE: Improve dark mode by changing line numbers to dark
|
|
background.
|
|
- MiniZinc IDE: Make parameter input dialog scrollable.
|
|
- MiniZinc IDE: Fix solution compression limit, and output one solution
|
|
per block of compressed solutions.
|
|
|
|
.. _v2.2.0:
|
|
|
|
`Version 2.2.0 <https://github.com/MiniZinc/MiniZincIDE/releases/tag/2.2.0>`__
|
|
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
(released 24 August 2018)
|
|
|
|
This is a major release of MiniZinc, introducing many new features and
|
|
improvements.
|
|
|
|
Major new features:
|
|
^^^^^^^^^^^^^^^^^^^
|
|
|
|
- **New minizinc command line tool**
|
|
Previous releases contained a ``minizinc`` command line tool that was
|
|
not much more than a simple script that could execute the compiler,
|
|
solver and output processor. The ``minizinc`` executable in version
|
|
2.2.0 is now the main frontend to compilation and solving and
|
|
integrates all of the functionality. It has access to all installed
|
|
MiniZinc solvers (both internal solvers and those interfaced through
|
|
FlatZinc files), and can automatically select the required options
|
|
(e.g., to include the solver-specific MiniZinc globals library).
|
|
You can get a list of available solvers using the ``--solvers``
|
|
command line option, and select a solver using ``--solver``. The
|
|
``minizinc`` executable can now also be used as a replacement for
|
|
``mzn2fzn`` (using ``-c``) and ``solns2out`` (using ``--ozn-file``).
|
|
- **Multi-pass compilation**
|
|
The compiler can now perform multiple passes in order to improve the
|
|
target FlatZinc code. This can be controlled using the ``-O`` command
|
|
line flags (``-O0`` to ``-O4``). Multi-pass compilation is
|
|
particularly useful when the target solver requires sophisticated
|
|
decomposition of global constraints (such as for MIP solvers).
|
|
- **Solution checking**
|
|
You can now supply an additional model that will be used to check
|
|
each solution produced by your main model. This can be useful for
|
|
teaching MiniZinc (to give students automatic feedback) and if your
|
|
main model is very complex but checking that a solution is correct is
|
|
easy.
|
|
- **MIP solvers:** support for FICO Xpress, and loading IBM ILOG CPLEX
|
|
as a plugin
|
|
We have added support for FICO Xpress (this requires compiling
|
|
MiniZinc from sources). CPLEX can now be loaded as a plugin, which
|
|
means that the binary distribution of MiniZinc has built-in CPLEX
|
|
support (just bring your own CPLEX dll).
|
|
- **Language extensions**
|
|
The MiniZinc language has been extended with two new features.
|
|
|
|
- Array slicing introduces syntax to conveniently select rows,
|
|
columns or entire slices of arrays. For example, ``x[3,..]``
|
|
selects the third row of array ``x``, while ``x[..,4]`` selects
|
|
the fourth column, and ``x[3..5,2..7]`` selects a slice of rows 3
|
|
to 5 and columns 2 to 7.
|
|
- Generator expressions can now contain multiple where clauses, e.g.
|
|
``forall (i in S where foo(i), j in T where i < j) (bar(i,j))``
|
|
This enables more efficient compilation compared to evaluating all
|
|
where clauses in the inner-most generator. In addition to
|
|
iteration (``i in S``), generators can now contain assignment
|
|
expressions (``j=foo(i)``). This enables intermediate definitions
|
|
that can then be used in further generators.
|
|
|
|
Changes and minor features:
|
|
^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
|
|
|
- The value of the objective can now be added automatically to the
|
|
output using the ``--output-objective`` command line option. Using
|
|
``--output-mode dzn``, this allows automatic output of all the free
|
|
variables of the model.
|
|
- Models that do not contain a solve item are now accepted and treated
|
|
as ``solve satisfy``
|
|
- Support for naming constraints and expressions (using ``::"name"``
|
|
syntax)
|
|
- Error messages have been improved, they now contain more accurate
|
|
location information.
|
|
- The compiler can be instructed to accept multiple assignments to the
|
|
same parameter (as long as they are all identical), using the
|
|
``--allow-multiple-assignments`` command line option.
|
|
- Annotations for supplying warm start values have been added to the
|
|
standard library (currently supported by the MIP solvers Gurobi and
|
|
IBM ILOG CPLEX).
|
|
- The compiler now accepts multiple .mzn files as input.
|
|
- Memory consumption and garbage collection performance has been
|
|
improved.
|
|
- The conditional expression has been extended to support
|
|
``if <cond> then <exp> endif`` (where ``<exp>`` is bool)
|
|
- Decomposition of one variable type to another (e.g. set into array of
|
|
bool) has been improved.
|
|
- MIP solvers Gurobi and IBM ILOG CPLEX use node files when over 3GB
|
|
working memory
|
|
- Gurobi and CPLEX support the MIPfocus parameter
|
|
- Gurobi supports MiniZinc search annotations by setting fixed
|
|
branching priorities
|
|
|
|
.. _bug-fixes-12:
|
|
|
|
Bug fixes:
|
|
^^^^^^^^^^
|
|
|
|
Consult the bug tracker at
|
|
https://github.com/MiniZinc/libminizinc/issues
|
|
|
|
.. _v2.1.7:
|
|
|
|
`Version 2.1.7 <https://github.com/MiniZinc/MiniZincIDE/releases/tag/2.1.7>`__
|
|
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
(released 10 January 2018)
|
|
|
|
.. _changes-8:
|
|
|
|
Changes:
|
|
^^^^^^^^
|
|
|
|
- Improved linearisation for some element constraints.
|
|
- Improve performance of optimisation phase by using a queue instead of
|
|
a stack.
|
|
- Add --dll option for Gurobi backend to specify the Gurobi DLL to
|
|
load.
|
|
- Add more defines_var annotations.
|
|
|
|
.. _bug-fixes-13:
|
|
|
|
Bug fixes:
|
|
^^^^^^^^^^
|
|
|
|
- Fix generation of variable names in output model (sometimes could
|
|
contain duplicates).
|
|
- Fix enum type inference for array literals with empty sets as their
|
|
first arguments. Fixes :bugref:`180`.
|
|
- Fix incorrect simplification of float domain constraints. Fixes :bugref:`159`.
|
|
- Fix ceil builtin for float values.
|
|
- Add superset decomposition for solvers that do not support set
|
|
variables.
|
|
- Fix three bugs in the garbage collector.
|
|
- Fix a bug in flattening that would create duplicate variables when a
|
|
variable declaration referred to another one in its type-inst.
|
|
- Fix a crash in flattening of partial functions. Fixes :bugref:`187`.
|
|
- Add missing deopt builtins for all par types.
|
|
- Fix output for arrays of sets of enums.
|
|
- Define more functions on par opt types. Fixes :bugref:`188`.
|
|
- Fix type checker to accept arrays of opt set values.
|
|
- Support printing of opt enum types. Fixes :bugref:`189`.
|
|
- Fix evaluation of comprehensions in recursive functions.
|
|
- Fix output of Gurobi backend when used in conjunction with solns2out.
|
|
- Fix pthread linking for mzn-cbc.
|
|
- Catch type error when set literal is declared that contains another
|
|
set.
|
|
|
|
IDE changes and bug fixes:
|
|
^^^^^^^^^^^^^^^^^^^^^^^^^^
|
|
|
|
- Fix problem where files with a . in the filename could not be run.
|
|
- Fix font settings (were not saved reliably on some platforms).
|
|
- Enable generic interface for submitting assignments (not just to
|
|
Coursera).
|
|
- Fix output handling for solvers that do not run mzn2fzn.
|
|
- Fix hidden solution display when there are exactly as many solutions
|
|
as the configured threshold for hiding solutions.
|
|
- Add configuration option to print timing information for each
|
|
solution.
|
|
|
|
.. _v2.1.6:
|
|
|
|
`Version 2.1.6 <https://github.com/MiniZinc/MiniZincIDE/releases/tag/2.1.6>`__
|
|
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
(released 22 September 2017)
|
|
|
|
.. _bug-fixes-14:
|
|
|
|
Bug fixes:
|
|
^^^^^^^^^^
|
|
|
|
- Fully evaluate parameters before binding formal arguments when
|
|
evaluating call expressions. Fixes :bugref:`177`.
|
|
- Fix incorrect simplification of Boolean constraints assigned to
|
|
variables that are assigned to false.
|
|
- Fix bug in flattening of linear equations that contain the same
|
|
variable on both sides.
|
|
- Fix un-trailing for let expressions, which could sometimes cause
|
|
incorrect code to be emitted when lets are evaluated in nested loops.
|
|
Fixes :bugref:`166`.
|
|
- Fix bug in JSON output of one-dimensional array literals.
|
|
- Fix unification of enum type-inst variables.
|
|
|
|
.. _v2.1.5:
|
|
|
|
`Version 2.1.5 <https://github.com/MiniZinc/MiniZincIDE/releases/tag/2.1.5>`__
|
|
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
(released 17 May 2017)
|
|
|
|
.. _changes-9:
|
|
|
|
Changes:
|
|
^^^^^^^^
|
|
|
|
- Some improvements to the linearisation library.
|
|
- Make parser read multiple .mzn files correctly.
|
|
- Enable better bounds computation for array access expressions on
|
|
fixed arrays.
|
|
- Perform better constant folding during optimisation phase. Fixes :bugref:`155`.
|
|
- Don't rewrite pow function into multiplication in the case of power
|
|
of 2.
|
|
- Save some memory by making certain internal data structures more
|
|
compact.
|
|
- Improve source code location of identifiers in generator calls
|
|
(should give more precise error messages).
|
|
- Produce an error message when a comprehension attempts to iterate
|
|
over an infinite set.
|
|
- Produce better error messages for operations on infinite values
|
|
(previously some errors did not contain a source code location).
|
|
- Speed up garbage collection by pre-allocating some memory.
|
|
|
|
.. _bug-fixes-15:
|
|
|
|
Bug fixes:
|
|
^^^^^^^^^^
|
|
|
|
- Fix range check for float literals in arrays.
|
|
- Fix a bug where a constraint could be removed incorrectly. Fixes :bugref:`150`.
|
|
- Include variables for dzn and json output from all included models,
|
|
not just the main model. Fixes :bugref:`153`.
|
|
- Produce multi-dimensional arrays in json output. Fixes :bugref:`156` and :bugref:`157`.
|
|
- Remove incorrect closing bracket from json output. Fixes :bugref:`154`.
|
|
- Fix bounds computation of par int and float arrays.
|
|
- Don't allow var access to arrays of strings or annotations (since
|
|
that would require an element constraint and var string / var ann
|
|
types).
|
|
- Introduce int2float constraints where necessary for some
|
|
linearisations.
|
|
|
|
.. _v2.1.4:
|
|
|
|
`Version 2.1.4 <https://github.com/MiniZinc/MiniZincIDE/releases/tag/2.1.4>`__
|
|
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
(released 13 March 2017)
|
|
|
|
.. _changes-10:
|
|
|
|
Changes:
|
|
^^^^^^^^
|
|
|
|
- Add warning for MIP solvers that do not support -a option for
|
|
satisfaction problems.
|
|
- Print introduced variable names with additional underscore to make
|
|
debugging FlatZinc easier. Fixes :bugref:`147`.
|
|
- Add support for pow function in linearisation library.
|
|
- Add support for parallel solving with CBC.
|
|
- Flatten top-level conjunctions in the order defined in the model.
|
|
|
|
.. _bug-fixes-16:
|
|
|
|
Bug fixes:
|
|
^^^^^^^^^^
|
|
|
|
- Fix major race condition that would crash the IDE when it didn't
|
|
detect that a solver process had finished.
|
|
- Improve HTML output in the IDE by making sure every line is
|
|
terminated by a newline.
|
|
- Fix a garbage collection bug that could cause dangling pointers when
|
|
expressions were copied.
|
|
- Fix type checker to allow empty arrays to be assigned to variables
|
|
declared as arrays of enums.
|
|
- Fix infeasibility check in MIP translation for some inequality
|
|
constraints.
|
|
- Improved defines_var annotations for reified xor constraints. Fixes
|
|
:bugref:`146`.
|
|
- Fix output of empty integer sets and deal with empty arrays in output
|
|
models.
|
|
- Fix MIP translation when boolean variables were removed due to
|
|
aliasing.
|
|
- Improve corner cases for linearisation of cumulative constraint.
|
|
- Properly report undefinedness in par bool expressions.
|
|
- Enable some additional constant folding during flattening. Fixes :bugref:`149`.
|
|
|
|
.. _v2.1.3:
|
|
|
|
`Version 2.1.3 <https://github.com/MiniZinc/MiniZincIDE/releases/tag/2.1.3>`__
|
|
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
(released 6 February 2017)
|
|
|
|
.. _changes-11:
|
|
|
|
Changes:
|
|
^^^^^^^^
|
|
|
|
- Remove more internal annotations from the generated FlatZinc.
|
|
- Detect failure earlier if optimisation pass leads to fixing of
|
|
variables outside their domains.
|
|
|
|
.. _bug-fixes-17:
|
|
|
|
Bug fixes:
|
|
^^^^^^^^^^
|
|
|
|
- Fix CBC backend to correctly print UNSAT message for models where the
|
|
compiler already detected unsatisfiability, and print solution
|
|
separators even where there is no other output.
|
|
- Add missing var_dom function for arrays of optional integer
|
|
variables. Fixes :bugref:`133`.
|
|
- Fix aliasing for optional integer variables. Fixes :bugref:`132`.
|
|
- Remove all annotations from output model.
|
|
- Fix computation of return type for functions that return arrays of
|
|
enums.
|
|
- Don't output newline if user-defined solution separator or status
|
|
message is empty
|
|
- Fix return type computation for functions where return type contains
|
|
enums.
|
|
- Check finiteness of float literals and bounds. Fixes :bugref:`138`.
|
|
- More checks for function return values. Fixes :bugref:`136`.
|
|
- Fix var int comprehensions (now triggers error message instead of
|
|
crash for var set of int comprehensions). Fixes :bugref:`135`.
|
|
- Fix output of variables with quoted identifiers.
|
|
- Fix flattening of let expressions that contain variables with
|
|
undefined (i.e., partial) right hand side.
|
|
- Make printing of error messages to stdout or stderr more consistent
|
|
across executables.
|
|
- Fix type checking of initialisation of enum types.
|
|
- Improve error messages for array access and index set errors. Fixes
|
|
:bugref:`131`.
|
|
- Fix definition of multi-dimensional element constraints to impose
|
|
correct bounds on index variables.
|
|
- Fix binding analysis during type checking, which did not handle the
|
|
shadowing of top-level declarations by comprehension generators
|
|
correctly. Fixes :bugref:`129`.
|
|
|
|
.. _v2.1.2:
|
|
|
|
`Version 2.1.2 <https://github.com/MiniZinc/MiniZincIDE/releases/tag/2.1.2>`__
|
|
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
(released 20 December 2016)
|
|
|
|
.. _bug-fixes-18:
|
|
|
|
Bug fixes:
|
|
^^^^^^^^^^
|
|
|
|
- Fix a bug in the type checking for generators that iterate over
|
|
arrays of enums.
|
|
- Fix a bug in the output handling of arrays of enums.
|
|
- Fix handling of multiple output items (only the last item was
|
|
compiled, now the concatenation is used for output as defined in the
|
|
specification).
|
|
|
|
.. _v2.1.1:
|
|
|
|
`Version 2.1.1 <https://github.com/MiniZinc/MiniZincIDE/releases/tag/2.1.1>`__
|
|
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
(released 14 December 2016)
|
|
|
|
.. _changes-12:
|
|
|
|
Changes:
|
|
^^^^^^^^
|
|
|
|
- Add missing min/max functions for set variables. Can be redefined to
|
|
solver builtins using the new redefinitions-2.1.1.mzn library file.
|
|
- Add support for option type expressions as objective functions.
|
|
- Automatically coerce arrays constructed using ++ to any enum index
|
|
set (in addition to array literals and comprehensions).
|
|
|
|
.. _bug-fixes-19:
|
|
|
|
Bug fixes:
|
|
^^^^^^^^^^
|
|
|
|
- Include cmath header to fix compilation issues with some compilers.
|
|
Fixes :bugref:`125`.
|
|
- Fix a garbage collection bug in the type checking for enumerated
|
|
types that would sometimes lead to crashes or incorrect error
|
|
messages.
|
|
- Fix type checking of comprehensions that involve enumerated types.
|
|
- Fix bounds computation for var sets of enumerated types.
|
|
- Support anon_enum function as documented.
|
|
|
|
.. _v2.1.0:
|
|
|
|
`Version 2.1.0 <https://github.com/MiniZinc/MiniZincIDE/releases/tag/2.1.0>`__
|
|
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
(released 17 November 2016)
|
|
|
|
.. _changes-13:
|
|
|
|
Changes:
|
|
^^^^^^^^
|
|
|
|
- MiniZinc now supports enumerated types.
|
|
- Solvers can be interfaced directly to the MiniZinc library, and
|
|
MiniZinc comes with direct support for the CBC, Gurobi and CPLEX MIP
|
|
solvers.
|
|
- The linearisation library has been updated, resulting in much better
|
|
FlatZinc being generated for MIP solvers.
|
|
- Data files can be in JSON format, and MiniZinc can produce JSON
|
|
output (using the --output-mode command line option).
|
|
- Variables can be annotated as ::add_to_output instead of writing an
|
|
output item.
|
|
- The compiler can output information about the parameters and output
|
|
variables of a model (using the --model-interface-only option).
|
|
- Floats are handled better (detecting infinities and handling sets of
|
|
floats).
|
|
- Bounds can be computed for more expressions (instead of failing with
|
|
an error message).
|
|
|
|
.. _bug-fixes-20:
|
|
|
|
Bug fixes:
|
|
^^^^^^^^^^
|
|
|
|
- Fix a bug in optimization that could remove variables even if they
|
|
are used. Fixes :bugref:`123`.
|
|
- Fix float variable declarations with sets of floats as domains. Fixes
|
|
:bugref:`117` and :bugref:`98`.
|
|
- Fix type checking and evaluation of asserts with array arguments.
|
|
Fixes :bugref:`109`.
|
|
- Fix abs(var float) declaration to work on floats without declared
|
|
bounds. Fixes :bugref:`106`.
|
|
- Fix a bug in the computation of int and float bounds that could
|
|
result in incorrect bounds in some cases. Fixes :bugref:`94`.
|
|
- Fix garbage collection when creating output models. Fixes :bugref:`77`.
|
|
- Fix binary operators on optional variables (in some cases comparison
|
|
operators were reversed).
|
|
- Fix optimization of unconstrained variables (could sometimes lead to
|
|
constraints being removed although they were not subsumed).
|
|
|
|
.. _v2.0.14:
|
|
|
|
`Version 2.0.14 <https://github.com/MiniZinc/MiniZincIDE/releases/tag/2.0.14>`__
|
|
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
(released 31 July 2016)
|
|
|
|
.. _changes-14:
|
|
|
|
Changes:
|
|
^^^^^^^^
|
|
|
|
- Less aggressive aggregation of linear expressions in cases where it
|
|
leads to much less efficient FlatZinc.
|
|
- Don't create temporary variable for an array literal if it is
|
|
discarded immediately anyway.
|
|
- Only create new partiality variable for if-then-else expression if
|
|
there's at least one var condition.
|
|
- Replace recursive definitions of array_intersect and array_union with
|
|
iterative ones.
|
|
|
|
.. _bug-fixes-21:
|
|
|
|
Bug fixes:
|
|
^^^^^^^^^^
|
|
|
|
- Don't report warnings about partiality when using extended generator
|
|
expressions.
|
|
- Include cmath to enable building with some versions of gcc.
|
|
- Constrain result of function call based on function return type if
|
|
necessary.
|
|
- Make sure linear expressions generated during binding of variables
|
|
are properly flattened (including simplification of the linear
|
|
expression)
|
|
|
|
.. _v2.0.13:
|
|
|
|
`Version 2.0.13 <https://github.com/MiniZinc/MiniZincIDE/releases/tag/2.0.13>`__
|
|
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
(released 26 March 2016)
|
|
|
|
.. _bug-fixes-22:
|
|
|
|
Bug fixes:
|
|
^^^^^^^^^^
|
|
|
|
- Fix a bug in the Common Subexpression Elimination table of the
|
|
compiler, which could lead to some constraints being dropped
|
|
(especially when using linear redefinitions).
|
|
- The output model sometimes did not include all required definitions,
|
|
in particular when array declarations used identifiers to specify the
|
|
dimensions.
|
|
- The generated FlatZinc sometimes still contained bool variables that
|
|
were not connected to the rest of the model, which could produce
|
|
incorrect solutions being printed.
|
|
- Fix a bug where warnings (e.g. about partial functions) could lead to
|
|
crashes.
|
|
- Fix the bounds computation for integer and float variables, which
|
|
could produce incorrect bounds for linear expressions. Fixes :bugref:`94`.
|
|
- Fix a bug in the IDE that caused solver output to be shown
|
|
incompletely in some cases.
|
|
|
|
.. _v2.0.12:
|
|
|
|
`Version 2.0.12 <https://github.com/MiniZinc/MiniZincIDE/releases/tag/2.0.12>`__
|
|
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
(released 25 February 2016)
|
|
|
|
.. _changes-15:
|
|
|
|
Changes:
|
|
^^^^^^^^
|
|
|
|
- Partial functions are now always evaluated in their Boolean context,
|
|
independent of whether they are par or var. If the result of a
|
|
partial function is statically known to be undefined (such as
|
|
division by zero or array access out of bounds), and it is used in a
|
|
constraint expression, this now results in a warning instead of an
|
|
error. Warnings can be turned off using the ::maybe_partial
|
|
annotation. Fixes :bugref:`43` and :bugref:`74`.
|
|
|
|
.. _bug-fixes-23:
|
|
|
|
Bug fixes:
|
|
^^^^^^^^^^
|
|
|
|
- Fix a bug in the optimisation phase related to unification of aliased
|
|
variables.
|
|
- Fix short-circuit evaluation of Boolean expressions.
|
|
- Fix a bug in the optimisation phase related to repeated
|
|
simplification of some Boolean expressions.
|
|
- Handle errors in output produced by solver without solns2out
|
|
crashing. Fixes :bugref:`80`.
|
|
- Fix a bug in the integer bounds computation that caused bool2int with
|
|
an embedded conditional to crash.
|
|
- Fix a problem with short-circuit compilation of == expressions when
|
|
one side was a var opt bool.
|
|
- Stop compilation when model is failed. Fixes a bug where mzn2fzn
|
|
would sometimes not clean up the FlatZinc enough for the solver.
|
|
|
|
.. _v2.0.11:
|
|
|
|
`Version 2.0.11 <https://github.com/MiniZinc/MiniZincIDE/releases/tag/2.0.11>`__
|
|
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
(released 15 January 2016)
|
|
|
|
.. _bug-fixes-24:
|
|
|
|
Bug fixes:
|
|
^^^^^^^^^^
|
|
|
|
- Fix parsing of hex and octal literals. Fixes :bugref:`71`.
|
|
- Fix compilation of extended comprehensions. Fixes :bugref:`72`.
|
|
- Fix computation of float array access bounds.
|
|
- Fix aggregation of clauses (could sometimes ignore the negative
|
|
literals).
|
|
|
|
.. _v2.0.10:
|
|
|
|
`Version 2.0.10 <https://github.com/MiniZinc/MiniZincIDE/releases/tag/2.0.10>`__
|
|
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
(released 9 December 2015)
|
|
|
|
.. _bug-fixes-25:
|
|
|
|
Bug fixes:
|
|
^^^^^^^^^^
|
|
|
|
- Fix a bug in the optimiser that could lead to undefined variables in
|
|
the generated FlatZinc. Fixes :bugref:`70`.
|
|
|
|
.. _v2.0.9:
|
|
|
|
`Version 2.0.9 <https://github.com/MiniZinc/MiniZincIDE/releases/tag/2.0.9>`__
|
|
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
(released 6 December 2015)
|
|
|
|
.. _bug-fixes-26:
|
|
|
|
Bug fixes:
|
|
^^^^^^^^^^
|
|
|
|
- Need to take return type into account when copying functions to
|
|
output model. Fixes :bugref:`55`.
|
|
- Evaluate calls that result in arrays using eval_arraylit. Fixes :bugref:`57`.
|
|
- Move inverse function to its own library file, so that it remains
|
|
available when a solver provides an alternative for the inverse
|
|
predicate.
|
|
- Optimisation phase now recursively checks constraints when elements
|
|
in an array become fixed.
|
|
- Fix CMakeLists file to work for paths that contain spaces.
|
|
- Distinguish between infix operators and regular functions in the
|
|
generated html documentation. Fixes :bugref:`61`.
|
|
- Made parser more robust against incorrect code.
|
|
- Fix increment/decrement operators for IntVals and make all operations
|
|
throw correct overflow exceptions.
|
|
- Fix automatic type coercion for variables declared in let
|
|
expressions.
|
|
- Fix a crash when printing some error messages.
|
|
- Fix compute_div_bounds builtin to return correct result for a
|
|
division by zero.
|
|
- Fix optimisation of Boolean constraints to use pointer equality
|
|
instead of structural equality (same expression can occur multiple
|
|
times in the FlatZinc).
|
|
- Only optimise constraints that have not been removed yet.
|
|
- Fix declaration of functional version of bin_packing_load. Fixes :bugref:`64`.
|
|
- Set type of arrays returned from polymorphic functions. Fixes :bugref:`65`.
|
|
- Fix parsing of quoted unary operator calls.
|
|
- Only compute set functions when bounds are valid. Fixes :bugref:`66`.
|
|
- Compute proper bounds for if-then-else expressions.
|
|
- Report error when no reified version of a constraint is available.
|
|
Fixes :bugref:`67`.
|
|
- Fix type checking of annotations on binary operators.
|
|
- Keep annotations when rewriting linear constraints and remove
|
|
is_defined_var annotations from fixed variables. Fixes :bugref:`69`.
|
|
|
|
.. _changes-16:
|
|
|
|
Changes:
|
|
^^^^^^^^
|
|
|
|
Integer, Boolean and float literals are now cached to achieve better
|
|
memory performance for some models.
|
|
|
|
Improve performance of parsing integer literals.
|
|
|
|
Improve handling of clause constraints.
|
|
|
|
Add source files of MiniZinc specification to the repository.
|
|
|
|
Limit maximum array size to enable better error messages.
|
|
|
|
Add implied_constraint predicate as a synonym for redundant_constraint.
|
|
|
|
.. _v2.0.8:
|
|
|
|
`Version 2.0.8 <https://github.com/MiniZinc/MiniZincIDE/releases/tag/2.0.8>`__
|
|
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
(released 19 October 2015)
|
|
|
|
.. _bug-fixes-27:
|
|
|
|
Bug fixes:
|
|
^^^^^^^^^^
|
|
|
|
- Fix incorrect negation of some reified comparisons.
|
|
- Make lb/ub functions work in more cases.
|
|
- Fix several bugs in the optimisation phase (could lead to incorrect
|
|
FlatZinc and crashes).
|
|
- Fix a problem with reverse mapper functions when the result of the
|
|
reverse mapper can be fixed to a constant.
|
|
|
|
.. _v2.0.7:
|
|
|
|
`Version 2.0.7 <https://github.com/MiniZinc/MiniZincIDE/releases/tag/2.0.7>`__
|
|
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
(released 5 October 2015)
|
|
|
|
.. _changes-17:
|
|
|
|
Changes:
|
|
^^^^^^^^
|
|
|
|
- Improved propagation of Boolean constants in the optimisation phase.
|
|
This should result in far fewer aliases and improves simplification
|
|
of conjunctions, disjunctions and clauses.
|
|
- Add special case handling for integer division by 1.
|
|
|
|
.. _bug-fixes-28:
|
|
|
|
Bug fixes:
|
|
^^^^^^^^^^
|
|
|
|
- Fix FlatZinc generator phase, need to turn all array literal
|
|
arguments into 1-based single dimensional arrays.
|
|
- Fix compilation of if-then-else expressions with var conditions
|
|
(which didn't implement proper partiality/totality semantics). Fixes
|
|
:bugref:`42`.
|
|
- Provide correct bounds for weak opt var arithmetic. Fixes :bugref:`51`.
|
|
- Need to be able to handle unflattened annotations. Fixes :bugref:`53`.
|
|
- Fix generation of output model (needs to ignore items that have been
|
|
removed previously).
|
|
- Add missing lb(var set of int) builtin. Fixes :bugref:`47`.
|
|
- Check that var set declarations have a finite element type. Fixes :bugref:`46`.
|
|
- Fix translation context for binary operators on arrays.
|
|
- Need to access IntVal::infinity as a function, otherwise depending on
|
|
linker etc it may become 0 in some cases. Fixes :bugref:`40`.
|
|
- Change pretty printer to use one less digit when printing float
|
|
literals. This fixes :bugref:`41` (or at least
|
|
provides a workaround), but some double constants may still be
|
|
rounded incorrectly when pretty printing and reading them back in.
|
|
The real fix will be to output hex float literals (coming soon).
|
|
- Distinguish between generalised comprehensions (iterating over sets)
|
|
and iterating over arrays. Fixes compilation of comprehensions where
|
|
iteration over an array is combined with var where clauses. Fixes :bugref:`45`.
|
|
- Fix bug in creation of output model where sometimes chains of
|
|
variable definitions could lead to crashes.
|
|
- Avoi creating mutually recursive definitions in some corner cases,
|
|
which could cause the compiler to run into infinite loops.
|
|
- Don't copy vardecl items to output model that are already there.
|
|
Fixes :bugref:`44`.
|
|
- Remove domain from array declarations in FlatZinc (avoids problems
|
|
with domains where holes need to be removed and when there are
|
|
infinities in the domains)
|
|
- Fix flattening of equality operator between non-opt and opt vars.
|
|
- Check that model contains a single solve and output item during type
|
|
checking (previously, multiple output items were not detected and
|
|
resulted in incorrect .ozn files).
|
|
- Fix flattening of xor (arguments need to be in mixed context).
|
|
- Use is_fixed in cumulative definition.
|
|
- Fix bug where a par right hand side of a variable mentioned in the
|
|
output would cause a crash.
|
|
- Fix variable dependency tracking during rewriting in the optimisation
|
|
phase. Could previously lead to variables being removed that are
|
|
still required. Fixes :bugref:`54`.
|
|
|
|
.. _v2.0.6:
|
|
|
|
Version 2.0.6
|
|
~~~~~~~~~~~~~
|
|
|
|
(released 2 August 2015)
|
|
|
|
.. _changes-18:
|
|
|
|
Changes:
|
|
^^^^^^^^
|
|
|
|
- Add parser support for hexadecimal floating point constants.
|
|
|
|
.. _bug-fixes-29:
|
|
|
|
Bug fixes:
|
|
^^^^^^^^^^
|
|
|
|
- Fix bounds computation for some calls (abs, int_times).
|
|
- Fix flattening of some array declarations (when right hand side is an
|
|
identifier).
|
|
- Add four missing GC locks (could lead to incorrect garbage
|
|
collection).
|
|
- Compact output model only after optimisation phase (could lead to
|
|
incorrect items being removed from output model).
|
|
|
|
.. _v2.0.5:
|
|
|
|
Version 2.0.5
|
|
~~~~~~~~~~~~~
|
|
|
|
(released 31 July 2015)
|
|
|
|
.. _changes-19:
|
|
|
|
Changes:
|
|
^^^^^^^^
|
|
|
|
- Improve the standard decomposition for the cumulative constraint.
|
|
- Better handling of binary operators during type checking and
|
|
flattening, can sometimes avoid stack overflows (e.g. for large
|
|
conjunctions).
|
|
- Make ++ operator left associative (avoid stack overflows in the
|
|
parser).
|
|
- Add ::domain annotations to linear constraints generated from
|
|
multi-dimensional element constraints.
|
|
- Greatly improved linearisation library.
|
|
|
|
.. _bug-fixes-30:
|
|
|
|
Bug fixes:
|
|
^^^^^^^^^^
|
|
|
|
- Fix recursive function calls that contain let expressions.
|
|
- Fix compilation of comprehensions inside parametric functions.
|
|
- Fix a memory leak in solns2out.
|
|
- Fix a problem in the evaluation of binary operators.
|
|
- Fix a bug in the flattening of array literals.
|
|
- Fix a bug that would crash the parser on certain syntax errors in let
|
|
expressions.
|
|
|
|
.. _v2.0.4:
|
|
|
|
Version 2.0.4
|
|
~~~~~~~~~~~~~
|
|
|
|
(released 1 July 2015)
|
|
|
|
.. _changes-20:
|
|
|
|
Changes:
|
|
^^^^^^^^
|
|
|
|
- Models can now be read from standard input (using the "-" or
|
|
"--input-from-stdin" command line options). Thanks to Sebastian
|
|
Kosch.
|
|
- Improved handling of bool2int during FlatZinc generation.
|
|
|
|
.. _bug-fixes-31:
|
|
|
|
Bug fixes:
|
|
^^^^^^^^^^
|
|
|
|
- Fix unification of aliased variables which could sometimes result in
|
|
variables being removed although had a constraining right hand side.
|
|
- Fix evaluation of set comprehensions.
|
|
- Fix command line flag --no-output-ozn
|
|
- Fix performance problem when evaluating array expressions inside
|
|
lets.
|
|
- Fix flattening of bool_xor redefinitions.
|
|
- Fix partial evaluation of some array access expressions with var
|
|
indexes.
|
|
- Fix definition of geost constraint.
|
|
- User-defined functions are now copied correctly into the output model
|
|
if they are referenced in the output item.
|
|
- Set comprehensions are fully evaluated.
|
|
|
|
.. _v2.0.3:
|
|
|
|
Version 2.0.3
|
|
~~~~~~~~~~~~~
|
|
|
|
(Internal release that did not contain some essential fixes)
|
|
|
|
.. _v2.0.2:
|
|
|
|
Version 2.0.2
|
|
~~~~~~~~~~~~~
|
|
|
|
(released 26 May 2015)
|
|
|
|
.. _changes-21:
|
|
|
|
Changes:
|
|
^^^^^^^^
|
|
|
|
- The optimiser now removes simple domain constraints from the FlatZinc
|
|
- The compiler now checks for integer overflows in all built-in
|
|
operations
|
|
- Report an error when the FlatZinc or ozn file cannot be opened for
|
|
writing
|
|
- Add support for 3d array literals (e.g. [\| \|1,2|3,4|,|5,6|7,8\| \|]
|
|
)
|
|
- Add show2d and show3d functions for formatting array output
|
|
- Add row/col functions for variable arrays (fixes :bugref:`2`)
|
|
- Introduce builtins for creating random distributions
|
|
- Add reverse library function
|
|
- Postpone flattening of some reified constraints
|
|
- Slightly improved compilation of partial function calls when it can
|
|
be inferred at compile time that their result is undefined
|
|
- Allow functions with empty argument lists to be declared as function
|
|
int: foo(); instead of just function int: foo;
|
|
- Improve error reporting, in particular for errors in comprehensions
|
|
- Enable expressions a..b where a and b are integer variables
|
|
- Add redundant_constraint and symmetry_breaking_constraint builtins,
|
|
these can be rewritten by solver libraries to allow e.g. local search
|
|
solvers to ignore redundant constraints.
|
|
- Improve flattening of predicates that simply return their arguments
|
|
(makes the redundant_constraint and symmetry_breaking_constraint
|
|
predicates work in more situations).
|
|
- Replace command line option --only-range-domains by optional boolean
|
|
value so that solver libraries can set the flag directly in their
|
|
redefinitions file.
|
|
- Stop flattening immediately when a model has been found to contain an
|
|
inconsistency.
|
|
- Improve flattening of array access expressions, in particular for
|
|
nested array accesses that can be combined into a single element
|
|
constraint
|
|
- Add command line option -s or --statistics to print statistics about
|
|
the generated FlatZinc
|
|
- Improve bounds computation for if-then-else expressions
|
|
- Clause arguments are compiled in positive and negative contexts
|
|
instead of mixed. That means that predicates that introduce free
|
|
variables can now be used in the positive part of a clause.
|
|
|
|
.. _bug-fixes-32:
|
|
|
|
Bug fixes:
|
|
^^^^^^^^^^
|
|
|
|
- Fix simplification of linear expressions, negative coefficients could
|
|
sometimes result in incorrect bounds
|
|
- Fix bounds computation for unary minus operator
|
|
- Add missing par set comparison builtins
|
|
- Fix bounds computation for extended comprehension syntax
|
|
- Fix a bug in the garbage collector that could sometimes lead to
|
|
premature deletion of expressions
|
|
- Fix bounds computation for set difference
|
|
- Fix duplication of some arrays in the FlatZinc (fixes :bugref:`3`)
|
|
- Fix bounds inference for variables bound to empty sets (fixes :bugref:`3`)
|
|
- Fix bug in error reporting function, which would sometimes not report
|
|
the entire call stack
|
|
- Fix the generation of fresh variable names for generator expressions
|
|
- Fix subtype check to allow empty arrays as subtype of arrays of sets
|
|
- Fix crash when using assert/2
|
|
- Fix bug when function used in output referred to par variable
|
|
- Fix bug in type checker, the detection of cyclic definitions was not
|
|
correct and could lead to stack overflows
|
|
- Fix parser to accept expressions with two consecutive array accesses
|
|
(like x[3][4], which are valid MiniZinc if x is an array of sets)
|
|
- Fix error reporting when an evaluation error occurs within a
|
|
comprehension generator
|
|
- Report type error on some ambiguous function calls
|
|
- Report type error on var sets with element type other than int
|
|
- Report type error when trying to coerce a var set into an array
|
|
- Report error when calling function with a value that is outside the
|
|
declared parameter bounds
|
|
- Fix arg_sort builtin to implement the correct semantics
|
|
- Fix sort_by builtin to sort in non-decreasing order, and work with
|
|
floats
|
|
- Fix bug in type checker, now automatic coercions in functions defined
|
|
with type variables (like the comparison operators) work correctly
|
|
- Check that index sets match for arrays assigned in let expressions
|
|
- Fix bug in bounds inference for integer expressions with annotations
|
|
- Fix propagation of defines_var annotation to be pushed through calls
|
|
- Fix parser to accept empty 2d and 3d array literals
|
|
- Fix flattening to remove defines_var annotations with par argument,
|
|
e.g. defines_var(2), which could be introduced by the optimisation
|
|
pass
|
|
- Fix output model creation for variables that have been redefined, and
|
|
remove more unused variables from the FlatZinc.
|
|
- Fix bug in the garbage collector that could result in function items
|
|
not being kept alive in rare cases.
|
|
|
|
.. _v2.0.1:
|
|
|
|
Version 2.0.1
|
|
~~~~~~~~~~~~~
|
|
|
|
(released 15 December 2014)
|
|
|
|
Major bugs and changes:
|
|
^^^^^^^^^^^^^^^^^^^^^^^
|
|
|
|
- Fix optimisation phase, which was previously incorrectly removing
|
|
variables
|
|
- Add support for trigonometric functions (built-ins were missing in
|
|
2.0.0) and pow (var versions were missing)
|
|
- Fix equality operator on par arrays
|
|
- All expressions in output model are now made par
|
|
- Improve bounds computation for float variables
|
|
- Fix translation of functions that need automatic coercion of their
|
|
return value
|
|
- Fix the array_lb and array_ub builtins, which would return incorrect
|
|
bounds in some cases
|
|
|
|
Minor bugs and changes:
|
|
^^^^^^^^^^^^^^^^^^^^^^^
|
|
|
|
- Add space between "array" and "[" in the pretty printer, to be
|
|
compatible with 1.6 output
|
|
- Output all par declarations before the var declarations in FlatZinc
|
|
- Fix parser, which could sometimes crash on invalid input
|
|
- Improve efficiency of bounds computation on some float expressions
|
|
- Add special case handling for division by 1
|
|
- Add missing float_times definition to the flatzinc builtins
|
|
- Use correct version of var_dom for float variables
|
|
- Output information about which files are included in verbose mode
|
|
- Only compute bounds for "then" expressions if the "if" is not fixed
|
|
to false
|
|
|
|
.. _v2.0.0:
|
|
|
|
Version 2.0.0
|
|
~~~~~~~~~~~~~
|
|
|
|
(released 9 December 2014)
|
|
|
|
MiniZinc 2.0 contains many new features and is based on a complete
|
|
rewrite of the MiniZinc-to-FlatZinc compiler. If you are currently using
|
|
the previous version 1.6, the new tools can be used as drop-in
|
|
replacements. The generated FlatZinc is compatible with version 1.6, so
|
|
all FlatZinc solvers should work without changes.
|
|
|
|
MiniZinc language changes
|
|
^^^^^^^^^^^^^^^^^^^^^^^^^
|
|
|
|
- MiniZinc now supports user-defined functions. Details have been
|
|
published in the paper "MiniZinc with Functions". Both functions and
|
|
predicates can be recursive.
|
|
- MiniZinc now supports option types. Details have been published in
|
|
the paper "Modelling with Option Types in MiniZinc".
|
|
- Let expressions have been generalised. They can now contain
|
|
constraint items in addition to variable declarations.
|
|
- Array index sets can be declared using arbitrary set expressions as
|
|
long as they evaluate to contiguous ranges.
|
|
- The if-then-else expression has been generalised to allow the
|
|
condition to be a var bool expression (instead of only par bool).
|
|
- Array and set comprehensions as well as generator calls can now
|
|
iterate over variables and use var bool where conditions.
|
|
- Any bool expression can now automatically coerce to an int
|
|
expression, likewise for int and float. This means that you don't
|
|
have to write bool2int or int2float in you models any more.
|
|
- Equality constraints can now be posted between array expressions.
|
|
- Arbitrary expressions can now be included ("interpolated") into
|
|
strings, using the syntax "some text \\(e) some more text", where e
|
|
is any expression. It is the same as writing "some text "++show(e)++"
|
|
some more text".
|
|
|
|
New built-in functions
|
|
^^^^^^^^^^^^^^^^^^^^^^
|
|
|
|
- Array functions: array1d, arrayXd, row, col, has_index, has_element,
|
|
sort_by, sort, arg_sort, arg_min, arg_max
|
|
|
|
New global constraints
|
|
^^^^^^^^^^^^^^^^^^^^^^
|
|
|
|
- arg_max, arg_min
|
|
- arg_sort
|
|
- k-dimensional diffn
|
|
- disjunctive
|
|
- geost
|
|
- knapsack
|
|
- network_flow
|
|
- regular with NFAs
|
|
- symmetric all different
|
|
- optional scheduling constraints: alternative, span, disjunctive,
|
|
cumulative
|
|
- functional versions of many global constraints
|
|
|
|
New tool chain
|
|
^^^^^^^^^^^^^^
|
|
|
|
- There are a few new builtins that solvers can reimplement, these are
|
|
listed in the redefinitions-2.0 file.
|
|
- Include items use a different method for finding included files.
|
|
Paths are now interpreted as relative to the file that has the
|
|
include item. That way, the mzn2fzn compiler can be called from a
|
|
different working directory.
|
|
- A new tool, mzn2doc, can produce html output from the documentation
|
|
comments. The MiniZinc distribution contains the documentation for
|
|
global constraints and builtins generated directly from the library
|
|
source code.
|