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Empty universes #7220

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remysucre opened this issue May 10, 2024 · 1 comment
Closed

Empty universes #7220

remysucre opened this issue May 10, 2024 · 1 comment

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@remysucre
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The following program should be satisfied by the sort with the empty universe, but z3 returns unsat:

(declare-sort T)
(assert (forall ((x T)) (not (= x x))))
(check-sat)
@NikolajBjorner
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This is not a bug.
First-order simple sorted logic builds in that all sorts are non-empty.

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@NikolajBjorner @remysucre