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Incorrect answer on QF_FP formula with fp.roundToIntegral and RoundingMode #3197

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muchang opened this issue Mar 7, 2020 · 1 comment
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Incorrect answer on QF_FP formula with fp.roundToIntegral and RoundingMode #3197

muchang opened this issue Mar 7, 2020 · 1 comment
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@wintersteiger

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@muchang
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muchang commented Mar 7, 2020

Hi,
For this formula:

(declare-fun a () (_ FloatingPoint 2 10))
(declare-fun b () RoundingMode)
(assert (distinct (fp.roundToIntegral b (fp.roundToIntegral b a)) (fp.roundToIntegral b a)))
(check-sat)

Z3 incorrectly gives sat, while this formula should be unsat.

OS: Ubuntu 18.04
Commit: 7d976e4
@wintersteiger
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Duplicate of #2894

@wintersteiger wintersteiger marked this as a duplicate of #2894 Mar 9, 2020
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@muchang @wintersteiger