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

Status: Open.

#9953 In Z3Prover/z3;

· wingsyuyi-satori opened on Jun 25, 2026

[coz3-deepunknown] Category A: ABVFPLRA float_req_bl_0621a c_10 — default MBQI core incomplete for quantified nested-array+BV+FP (sat.smt=true deci [Content truncated due to length]

agentic-workflows

automated

coz3

unknown

Status: Open.

#9950 In Z3Prover/z3;

· levnach opened on Jun 25, 2026

[coz3-deepunknown] Triage: ABVFP unknown is seed-dependent instability (Category C) — non-incremental/ABVFP/20190429-UltimateAutomizerSvcomp2019/fl [Content truncated due to length]

agentic-workflows

automated

coz3

unknown

Status: Open.

#9949 In Z3Prover/z3;

· levnach opened on Jun 25, 2026

[coz3-deepunknown] ANIA prefixsum_rec.c_11: MBQI returns unknown (incomplete quantifiers) on a satisfiable quantified-array benchmark

agentic-workflows

automated

coz3

unknown

Status: Open.

#9947 In Z3Prover/z3;

· levnach opened on Jun 25, 2026

[coz3-deepunknown] Seed-dependent spurious unknown on ABV quantified benchmark alternating_list_true-unreach-call_true-valid-memsafety.i_11 (Cate [Content truncated due to length]

agentic-workflows

automated

coz3

unknown

Status: Open.

#9946 In Z3Prover/z3;

· levnach opened on Jun 24, 2026

[coz3-deepunknown] ALIA quantified-array query returns seed-dependent unknown (driven by smt.random_seed) — bubble_sort_linux-1.i_0.smt2

agentic-workflows

automated

coz3

unknown

Status: Open.

#9945 In Z3Prover/z3;

· levnach opened on Jun 24, 2026

[Refutational Soundness Bug] Incorrect UNSAT in string/UF theory with quantifiers.

Status: Open.

#9943 In Z3Prover/z3;

· wingsyuyi-satori opened on Jun 24, 2026

Z3 times out on failing proof, hoped to get sat.

Status: Open.

#9843 In Z3Prover/z3;

· davedets opened on Jun 12, 2026

More issues with constant arrays and z3 reporting sat instead of unsat

Status: Open.

#9705 In Z3Prover/z3;

· mpreiner opened on Jun 3, 2026

z3 returns invalid model for formula involving seq.map

Status: Open.

#9642 In Z3Prover/z3;

· ryanfanchiotti opened on May 27, 2026

z3 returns sat on unsat formula involving seq.fold_left

Status: Open.

#9602 In Z3Prover/z3;

· ryanfanchiotti opened on May 23, 2026

FetchContent documentation incomplete, it seems.

Status: Open.

#9598 In Z3Prover/z3;

· davedets opened on May 22, 2026