dekker-phd-thesis/assets/listing/inc_state_access.mzn

% Report the status of the solver (before restarting).
enum STATUS = {START, UNKNOWN, UNSAT, SAT, OPT} @\label{ann:enum_status}@
function STATUS: status(); @\label{ann:status}@

% Provide access to the last assigned value of variable x.
function int: last_val(var int: x);