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Z3 returns `unsat` for the instance below, which contains a subtraction involving an `Int` and a `Bool` variable, `(- F B)`.
```
(set-logic QF_LIA)
(define-fun state ((A Bool) (B Bool) (C Bool)…
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Hello,
I've been trying recently, out of curiosity, to change `fstar`'s backend from `z3` to [`vampire`](https://vprover.github.io/). I made the discovery that `vampire` is able to deduce `unsat` f…
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g++ -o z3 shell/lp_frontend.o ... util/util.a -lpthread
Undefined symbols for architecture x86_64:
"ast_smt2_pp(std::__1::basic_ostream&, func_decl*, expr*, smt2_pp_environment&, params_ref co…
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**Describe the bug**
On the following file, cvc5 suffers a segfault when trying to produce a proof in the Alethe format:
```
(set-logic QF_UF)
(declare-sort u 0)
(declare-fun $2 () Bool)
(de…
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```
cat bug.smt2
(set-logic UFNRA)
(declare-fun c (Real) Bool)
(assert (forall ((z Real)) (or (not (= (c z) (c 0.0))) (not (= (* z z) 2.0)))))
(check-sat)
```
```
./cvc5 bug.smt2 --mbqi --nl…
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Hi,
For this instance, cvc5 https://github.com/cvc5/cvc5/commit/40f1137e5800b19bf6f4085bb4f0d2634fb9737f
```
$ cvc5 -q small.smt2
Fatal failure within virtual bool cvc5::internal::theory::Theory::…
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**Describe the bug**
When attempting to `configure.sh` on Windows with the `--win64-native` flag, CMake fails due to `FlexLexer.h`.
**Command line arguments**: Command line arguments passed to c…
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When using bitwuzla as backend for [yosys-smtbmc](/YosysHQ/yosys), I encountered an input for which bitwuzla hangs essentially forever during the initial rewrite for a `(define-fun ...)`, even before …
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Greetings,
For this instance, an invalid bug occurred.
We tried to make this instance as small as possible. We sincerely hope that our report would be helpful for the z3 team.
commit: [304b316](h…
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In current conjure `Repository version 3fcbbbbab (2021-12-17 13:08:56 +0300)` calling an SMT solver backend other than Boolector fails, because the version of Savile Row which conjure installs always …