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Code Activity
22466 commits 86 branches 58 tags 205 MiB
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96 commits

Author SHA1 Message Date
Nikolaj Bjorner
abbe36561d cleanup service 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2026-04-24 17:22:04 -07:00
Nikolaj Bjorner
5f7e14315d fix tests 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2026-04-22 10:54:06 -07:00
CEisenhofer
3873f387be Model construction has to respect the length constraints 2026-04-22 19:51:09 +02:00
Nikolaj Bjorner
aed76af2b5 deal with code smells/duplicate 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2026-04-21 18:57:25 +02:00
Nikolaj Bjorner
b2fa00ecf4 fix vector<le, false> to vector<le> we need the copy and destructor semantics for expr_ref 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2026-04-21 18:37:23 +02:00
Nikolaj Bjorner
4446705eae clean up conflict generation 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2026-04-21 18:28:25 +02:00
Nikolaj Bjorner
8cc85a7d7b code simplification, fix conflict in new_diseq_eh 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2026-04-21 10:17:43 +02:00
Nikolaj Bjorner
352b14fe2b fix and optimize not-contains and regex equalities 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2026-04-21 09:16:00 +02:00
Nikolaj Bjorner
c18188cba8 avoid crashes in cases like wildcard-matching-regex-67.smt2, need regex constraint solving 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2026-04-21 05:44:53 +02:00
CEisenhofer
41412293fe Let's try to justify bounds 2026-04-20 15:52:35 +02:00
CEisenhofer
82df1afeaf tentative solution: use existing nullability check (we might want to check in the future which guards of the ITE are actually true) 2026-04-14 18:07:03 +02:00
Nikolaj Bjorner
f09f6d5097 add internalization as fallback option 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2026-04-14 08:47:55 -07:00
Nikolaj Bjorner
725b13680e na 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2026-04-14 08:39:22 -07:00
CEisenhofer
2db99473a3 Removed irrelevant information from membership constraints 2026-04-14 16:27:50 +02:00
CEisenhofer
195f2caf25 Removed strange code that caused the solver to give up when finding a model instantly 2026-04-14 16:06:03 +02:00
CEisenhofer
3fdd903373 Bug if uninternalized literal becomes internalized and immediately false 2026-04-14 15:48:13 +02:00
CEisenhofer
ed4387c70e Log to file 2026-04-14 11:47:26 +02:00
CEisenhofer
d620f20c63 Simplify code 2026-04-13 14:06:16 +02:00
Nikolaj Bjorner
276b9c38af log conflict 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2026-04-13 04:41:38 -07:00
CEisenhofer
2b7204b07c Does model construction work properly now? 2026-04-10 17:59:16 +02:00
CEisenhofer
e6ef0d29c4 We need to check local consistency over and over again 2026-04-09 15:56:00 +02:00
CEisenhofer
d127055841 fix(nseq): handle empty children in apply_regex_factorization 2026-04-09 14:24:44 +02:00
CEisenhofer
a36254f104 Some more bug fixes 2026-04-09 13:47:29 +02:00
CEisenhofer
38d725dc5a Deriving by allchar should not crash 2026-04-09 11:48:35 +02:00
CEisenhofer
598e4ede4e Removed debug code 2026-04-09 11:03:18 +02:00
CEisenhofer
513f49f39c Debugging 2026-04-08 18:48:47 +02:00
CEisenhofer
86dc9d3268 We need to reset local conflicts 2026-04-08 18:24:11 +02:00
CEisenhofer
26ededa891 More debug info 2026-04-08 18:00:52 +02:00
CEisenhofer
74cf21b852 Bug in model extraction 
Added debug check
 2026-04-08 16:37:21 +02:00
CEisenhofer
26d36ba6ee Missing justification added 
Added check for correctness of conflict core
 2026-04-08 10:15:27 +02:00
CEisenhofer
8298ba6011 Quick fix for some unsound cases 2026-04-04 18:36:25 +02:00
CEisenhofer
a58a9114d2 Fix str.< Skolem length generation overhead 2026-04-04 18:32:02 +02:00
Nikolaj Bjorner
e59ee306e9 allow literals to be false in model validation - we can't enforce lack of propagation after internalizing literals, especially if literals are repeated (modulo permutation of equality) 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2026-04-02 12:51:47 -07:00
CEisenhofer
a81ce477f5 Added classical regex factorization 2026-04-02 20:08:00 +02:00
Nikolaj Bjorner
3ca960d679 test that there is a model 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2026-04-02 10:49:09 -07:00
CEisenhofer
a8db876765 Fix problem with divisibility predicate 2026-04-02 16:25:49 +02:00
CEisenhofer
5ec28d3bc8 Eliminate length gradients from regexes 2026-04-02 15:58:15 +02:00
CEisenhofer
1282e4de11 Prevent unsoudness because of missing length propagation 2026-04-02 14:34:46 +02:00
Nikolaj Bjorner
2245451e96 remove aux function 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2026-04-01 19:07:37 -07:00
Nikolaj Bjorner
b1dc2f2be2 It is possible that a non-internalized expression gets assigned to false immediately by internalization 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2026-04-01 11:49:25 -07:00
CEisenhofer
36b01a51f1 Properly extract justifications from subsolver 2026-04-01 16:58:26 +02:00
CEisenhofer
e25e93503b First try to do better dependency tracking 2026-04-01 15:23:38 +02:00
CEisenhofer
60913f0068 Output both Nielsen graph size and conflict size 2026-04-01 10:23:55 +02:00
CEisenhofer
5d95f44a03 Conflict logging 2026-04-01 10:08:03 +02:00
Nikolaj Bjorner
9aceaf3cac reviewing seq_nielsen, detect repeated final-check to avoid rebuilding nielsen graph 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2026-03-30 00:01:24 -07:00
Nikolaj Bjorner
684cb23b40 turn on constraint integrity checking 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2026-03-29 19:30:13 -07:00
Nikolaj Bjorner
d7ee475bc3 ensure equalities are propagated 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2026-03-29 16:47:05 -07:00
Copilot
09cde1f80c
Port propagate_eq from theory_seq for sk().is_eq in theory_nseq (#9165) 
Agent-Logs-Url: https://github.com/Z3Prover/z3/sessions/7c0a330f-3f9f-4c5d-99f2-47fad013538f

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: NikolajBjorner <3085284+NikolajBjorner@users.noreply.github.com>
 2026-03-29 15:44:18 -07:00
Nikolaj Bjorner
3db734d249 add note about propagate-eq 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2026-03-29 15:19:36 -07:00
CEisenhofer
3b5b53126e Bug fixing with unit replacement 2026-03-26 15:56:58 +01:00