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Z3 incorrect result #2715

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muchang opened this issue Nov 18, 2019 · 0 comments
Closed

Z3 incorrect result #2715

muchang opened this issue Nov 18, 2019 · 0 comments

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@muchang
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muchang commented Nov 18, 2019

Hi,
For this formula,

(declare-fun a () Real)
(assert (= (/ (* 2 a) a) (/ a a) 1))
(check-sat)

Z3 reports unsat, while CVC4 reports sat.
If I feed this model to Z3:

(define-fun a () Real 0.0)

Z3 reports sat

OS: Ubuntu 18.04
Revision: d95b549
@muchang muchang changed the title Z3 incorrect checking result Z3 incorrect result Nov 18, 2019
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