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advil bugs

Status: Open.

#10663 In Z3Prover/z3;

· Nikolaj Bjorner (NikolajBjorner) opened on Aug 26, 2026

Performance regression in 5.1.0 (since 8th July)

Status: Open.

#10645 In Z3Prover/z3;

· Roderick Chapman (rod-chapman) opened on Aug 24, 2026

fp.rem drops significand bits with a subnormal divisor (shift amount widened more than the significand)

Floats

Status: Open.

#10609 In Z3Prover/z3;

· Mikhail R. Gadelha (mikhailramalho) opened on Aug 21, 2026

setup_relevancy keeps relevancy=2 on quantifier-free BV problems containing FP terms

Floats

Status: Open.

#10605 In Z3Prover/z3;

· Andrea Boido (Odiob) opened on Aug 21, 2026

SIGSEGV inside the MBQI model checker's auxiliary context::check — fault site varies per run (looks like state corruption); regression, 4.16.0 is clean

Status: Open.

#10385 In Z3Prover/z3;

· headinthebox opened on Aug 4, 2026

[Solution Soundness Bug] Incorrect SAT in Float32 FP/Real round-trip arithmetic.

Floats

Status: Open.

#10176 In Z3Prover/z3;

· wingsyuyi (wingsyuyi-satori) opened on Jul 21, 2026

Solution soundness issue in QF_FP

Floats

Status: Open.

#10175 In Z3Prover/z3;

· Dominik Winterer (wintered) opened on Jul 21, 2026

[Refutational Soundness Bug] Incorrect UNSAT in Float32 FP/Real round-trip arithmetic.

Floats

Status: Open.

#9953 In Z3Prover/z3;

· wingsyuyi (wingsyuyi-satori) opened on Jun 25, 2026

Consolidated invalid model bugs

Status: Open.

#9319 In Z3Prover/z3;

· Lu Maltsis (lmaltsis) opened on Apr 16, 2026

Is there a way to combine QF_BV and QF_IDL?

Status: Open.

#8940 In Z3Prover/z3;

· Thomas Haas (ThomasHaas) opened on Mar 11, 2026

Incorrect model with :produce-proofs true involving String Theory and UF

Status: Open.

#8194 In Z3Prover/z3;

· wingsyuyi (wingsyuyi-satori) opened on Jan 14, 2026

Unsat only with unnecessary asserts, else unknown

Floats

Status: Open.

#8052 In Z3Prover/z3;

· ThomasMayerl opened on Nov 28, 2025