New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

Refutational soundness bug in QF_S #4875

Closed

wintered opened this issue Dec 8, 2020 · 0 comments

wintered commented Dec 8, 2020 •

edited

Loading

Hi,
the following trace shows a refutational soundness bug in Z3 (c49d39a).

[596] % z3release small.smt2
unsat
sat
[597] % cat small.smt2
(declare-const a String)
(assert (distinct (str.replace (str.replace a "B" a) a "AB") (str.replace (str.replace a "B" "AB") a "AB")))
(check-sat)
(reset)
(define-fun a () String "B")
(assert (distinct (str.replace (str.replace a "B" a) a "AB") (str.replace (str.replace a "B" "AB") a "AB")))
(check-sat)
[598] %

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

NikolajBjorner closed this as completed in

fae9481

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment