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Soundness issue on div #6289

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merlinsun opened this issue Aug 21, 2022 · 0 comments
Closed

Soundness issue on div #6289

merlinsun opened this issue Aug 21, 2022 · 0 comments

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@merlinsun
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Hi,
For this instance, z3 d5d77df returns sat while cvc5 returns unsat.

$ cvc5 small.smt2
unsat
$ z3 small.smt2
sat
$ cat small.smt2
(set-logic ALL)
(assert (exists ((x Int)) (and (< 0 x) (> 0 (div 1 (* 2 x))))))
(check-sat)
NikolajBjorner added a commit that referenced this issue Aug 21, 2022
@NikolajBjorner
#6289
2181a0f
NikolajBjorner added a commit that referenced this issue Aug 21, 2022
@NikolajBjorner
#6289
be0cd74
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@NikolajBjorner @merlinsun