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gurobi does not support floordivision #398

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Wout4 opened this issue Aug 7, 2023 · 0 comments · May be fixed by #405
Open

gurobi does not support floordivision #398

Wout4 opened this issue Aug 7, 2023 · 0 comments · May be fixed by #405
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bug fuzz-test inconsistency partial functions

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@Wout4
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Wout4 commented Aug 7, 2023

the model below is unsat for gurobi, because it doesn't allow rounding of floordiv (only even numbers are valid for x1 because it gets divided by 2). This is not the expected behavior of floordivision

iv = intvar(-1,3)
x1 = intvar(1,4, name="x1")

cons = [x1 // 2 == iv, x1 == 1]
print(Model(cons).solve('gurobi'))
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circumvent gurobi integer division to match cpmpy floordivision CPMpy/cpmpy
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@Wout4