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CVC4 sygus-inference gives wrong result on LIA formula without free variables #3514

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muchang opened this issue Dec 1, 2019 · 0 comments · Fixed by #3516
Closed

CVC4 sygus-inference gives wrong result on LIA formula without free variables #3514

muchang opened this issue Dec 1, 2019 · 0 comments · Fixed by #3516
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@ajreynol
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@muchang
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muchang commented Dec 1, 2019

Hi,
For this formula:

(assert
 (forall ((a Real))
  (exists ((b Real))
   (exists ((c Real))
    (and
     (< (+ a c) 0.0)
     (or (distinct a 0.0) (= b 5.0))
     (distinct (+ b c) 1.0)
     (< c 1))))))
(check-sat)

CVC4 sygus-inference incorrectly reports unsat while this formula should be sat

OS: Ubuntu 18.04
Revision: 9bf87b8
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Fix single invocation solution construction for multiple function case ajreynol/CVC4
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