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Spurious error, solution unsoundness, or invalid model:
```
[539] % z3release model_validate=true small.smt2
sat
(error "line 2 column 163: invalid extract application")
sat
(error "line 3 colum…
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**Imported from Bugzilla**
Reporter: *Morgan Deters*
Status: *NEW*
Severity: *normal*
Assigned to: *Clark Barrett*
Component: *{Internals} Parser infrastructure*
Milestone: *1.6*
Version: *master*
Pla…
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Here's a simple problem:
```
(set-logic QF_UF)
(declare-sort U 0)
(declare-fun x () U)
(declare-fun y () U)
(declare-fun f (U U) U)
(define-fun aaa () Bool (not (= (f y x) (f x y))))
(assert (…
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Hello,
I'm a maintainer for the [Rust bindings for z3](https://github.com/prove-rs/z3.rs) and we have a failing unit test for the ctx-solver-simplify tactic. Trying to understand whether this is th…
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It is a regression from z3-4.11.0, but unsure whether it should go to https://github.com/Z3Prover/z3/issues/2650.
```
[517] % z3-4.11.0 small.smt2
sat
sat
(
(define-fun n () Int
0)
…
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MacOS Monterey 12.6.2, Xcode-14.2, GHC-9.2.5, Cabal-3.8.1.0, current Cryptol built form sources.
Apparent error: `Missing response from solver`.
```
$ type z3
z3 is /opt/local/bin/z3
$ z3 --v…
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CBMC version: cbmc-5.38.0-13-gb4c3a12d2
Operating system: Linux x86_64
Exact command line resulting in the issue: cbmc --z3 myalg.c
What behaviour did you expect: Verification failure
What hap…
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The following problem leads to an error because of "the unknown indexed function and4"
```
(set-logic LIA)
(declare-fun y () Int)
(declare-fun y1 () Int)
(define-funs-rec (
( and5 (…
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```
[521] % z3debug small.smt2
ASSERTION VIOLATION
File: ../src/ast/rewriter/rewriter_def.h
Line: 797
UNEXPECTED CODE WAS REACHED.
(C)ontinue, (A)bort, (S)top, (T)hrow exception, Invoke (G)DB
…
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Hello,
In [ESBMC](https://github.com/esbmc/esbmc) we are noticing some performance issues when calling Z3 from the API vs calling Z3 binary. Solving the smt formula takes less than 1 second, I am a…