17 lines
520 B
MiniZinc
17 lines
520 B
MiniZinc
predicate fzn_value_precede_int(int: s, int: t, array[int] of var int: x) =
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let {
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int: imin = min(index_set(x)),
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int: imax = max(index_set(x)),
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array[imin..imax+1] of var bool: b
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} in (
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forall (i in imin..imax) (
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let {
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var bool: xis = (x[i] == s)
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} in
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(xis -> (b[i+1] == true))
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/\ ((not xis) -> (b[i] == b[i+1]))
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/\ ((not b[i]) -> (x[i] != t))
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)
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/\ b[imin] == false
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);
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