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invalid model on an incremental QF_UFLIA instance #6937

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zhendongsu opened this issue Oct 9, 2023 · 1 comment

zhendongsu commented Oct 9, 2023

Commit: 1bdf66b
OS: Ubuntu 22.04

[537] % z3release model_validate=true small.smt2 
sat
sat
(error "line 7 column 10: an invalid model was generated")
(
  (define-fun b () Int
    1)
  (define-fun a ((x!0 Int)) Int
    0)
)
[538] % cat small.smt2 
(declare-fun a (Int) Int)
(declare-fun b () Int)
(push)
(assert (> b 0))
(check-sat)
(assert (< (a 1) (a b)))
(check-sat)
(get-model)

The text was updated successfully, but these errors were encountered:

Author

zhendongsu commented Oct 9, 2023

Another likely related instance:

[546] % z3release model_validate=true small.smt2 
sat
sat
sat
(error "line 7 column 10: an invalid model was generated")
(
  (define-fun a () Int
    0)
  (define-fun b ((x!0 Int)) Bool
    true)
)
[547] % cat small.smt2 
(declare-fun a () Int)
(check-sat)
(declare-fun b (Int) Bool)
(assert (b (+ a 1)))
(check-sat)
(assert (not (b 1)))
(check-sat)
(get-model)

NikolajBjorner closed this as completed in

adbee0c

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