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506 commits

Author SHA1 Message Date
Nikolaj Bjorner
088898834c filter length limits to be non-skolems and under concat/""/unit 2022-09-15 07:41:13 -07:00
Nikolaj Bjorner
c47ca341b7 fix #6343 
The bug was that axiom generation was not enabled on last_index, so no axioms got created to constrain last-index.
With default settings the solver is now very slow on this example. It is related to that the smallest size of a satisfying assignment is above 24. Pending a good heuristic to find initial seeds and increments for iterative deepening, I am adding another parameter smt.seq.min_unfolding that when set to 30 helps for this example.
 2022-09-14 10:17:25 -07:00
Nikolaj Bjorner
809838fede solve for fold, expand rewrites under fold/map 
Occurrences of map and fold are interpreted.
They are defined when the seq argument is expanded into a finite
concatenation. The ensure this expansion takes place, each fold/map term
is registered and defined through rewrites when the seq argument simplifies.
 2022-09-11 11:32:18 -07:00
Nikolaj Bjorner
63f48f8fd4 add options for logging learned lemmas and theory axioms 
- add solver.axioms2files
  - prints negated theory axioms to files. Each file should be unsat
- add solver.lemmas2console
  - prints lemmas to the console.
- remove option smt.arith.dump_lemmas. It is replaced by solver.axioms2files
 2022-08-08 11:18:56 +03:00
Nikolaj Bjorner
a8ff976bcc max maximal unfolding configurable 2022-08-04 16:59:26 +03:00
Bruce Mitchener
5d0dea05aa
Remove empty leaf destructors. (#6211) 2022-07-30 10:07:03 +01:00
Nikolaj Bjorner
1b83a4556b fix #6178 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-07-20 20:48:23 -07:00
Nikolaj Bjorner
8e23af33d7 fix build 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-07-13 14:20:21 -07:00
Nikolaj Bjorner
7d0c789af0 propagate has-length over map/mapi 2022-07-12 20:50:28 -07:00
Nikolaj Bjorner
0c42d3b079 small format update 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-07-06 11:41:48 -07:00
Nikolaj Bjorner
8efa3c8ade introduce notion of beta redex to deal with lambdas in non-extensional positions 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-06-10 17:35:01 -07:00
Nikolaj Bjorner
5db133f875 add a way to supress lambdas 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-06-10 14:35:20 -07:00
Nikolaj Bjorner
03a2d9a018 fix #5942 2022-04-03 11:03:28 -07:00
Nikolaj Bjorner
dd27f7e937 #5935 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-03-30 17:47:48 -10:00
Nikolaj Bjorner
dbd5512d8c ensure enode without recursion 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-01-11 08:35:57 -08:00
Nikolaj Bjorner
055732423c ensure enode without recursion 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-01-11 08:35:25 -08:00
Nikolaj Bjorner
9d3c8a6a2f na 2022-01-01 17:59:31 -08:00
Nikolaj Bjorner
dd6a11b526 fix #5715 2021-12-16 09:35:54 -08:00
Nikolaj Bjorner
b1d167de5b fix co-factoring' 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-12-14 10:12:38 -08:00
Nikolaj Bjorner
f40becf099 remove case for non-emptiness to combine with standard membership 
as part of revising engine for addressing #5693
 2021-12-13 18:17:40 -08:00
Nikolaj Bjorner
833dd62623 fix #5681 2021-11-24 13:24:31 +01:00
Nikolaj Bjorner
f60ed2ce92 #5591 2021-10-13 21:38:36 -07:00
Nikolaj Bjorner
52032b9ef8 #5467 2021-10-12 10:16:15 -07:00
Nikolaj Bjorner
aa05298950 fix #5491 2021-08-19 21:12:27 -07:00
Nikolaj Bjorner
7de8c72246 cleanups 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-07-31 11:32:47 -07:00
Nikolaj Bjorner
9e5dcf3ecb bound length of ubv2s 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-07-16 16:17:59 +02:00
Nikolaj Bjorner
0752b1385c add length axioms 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-07-13 14:22:58 +02:00
Nikolaj Bjorner
f74adb1ebd ubv2s step3 2021-07-12 17:15:08 +02:00
Nikolaj Bjorner
b6a3891ac4 str.from_ubv step2 2021-07-12 15:00:36 +02:00
Nikolaj Bjorner
897cbf347b fix #5381 2021-07-07 16:51:06 +02:00
Nikolaj Bjorner
b658934bd8 fix #5197 fix #5193 2021-04-20 10:16:44 -07:00
Nikolaj Bjorner
4a6083836a call it data instead of c_ptr for approaching C++11 std::vector convention. 2021-04-13 18:17:35 -07:00
Nikolaj Bjorner
804f065215 fixes for #4688 
https://github.com/Z3Prover/z3/issues/4866#issuecomment-778721073
 2021-04-11 17:42:12 -07:00
Nikolaj Bjorner
0b0efa83ca debugging #5127 2021-04-06 20:09:50 -07:00
Nikolaj Bjorner
6d28b1a858 fix #5134 2021-03-29 14:11:49 -07:00
Nikolaj Bjorner
0432311b11 fix #5121 2021-03-28 16:14:37 -07:00
Nikolaj Bjorner
15a7621e27 remove template dependency for trail objects 2021-03-19 11:15:05 -07:00
Nikolaj Bjorner
c05c5caab5 fix #5111 2021-03-19 11:15:04 -07:00
Nikolaj Bjorner
cb8c6ffafc a pending issue from #4866 
https://github.com/Z3Prover/z3/issues/4866#issuecomment-748658905
 2021-03-16 05:26:13 -07:00
Nikolaj Bjorner
38737db802 fixes and more porting seq_eq_solver to self-contained module 2021-03-04 16:23:22 -08:00
Nikolaj Bjorner
e398959732 move eq solver functionality to common place, fixes to goal2sat 2021-03-04 07:57:31 -08:00
Nikolaj Bjorner
0ce1c34d81 fix #5065 - regression solving str.from_int equations now that it isn't injective any longer 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-03-02 12:59:48 -08:00
Nikolaj Bjorner
026065ff71 streamline pb solver interface and naming after removal of xor 2021-02-28 12:32:04 -08:00
Nikolaj Bjorner
5c47f244e9 fix #5047 2021-02-26 03:37:14 -08:00
Nikolaj Bjorner
64ba0b631a fixes to seq solver 2021-02-25 10:35:14 -08:00
Nikolaj Bjorner
377d060036 move to separate axiom management 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-02-23 18:09:45 -08:00
Nikolaj Bjorner
70b4822571 patch seq theory using purification to avoid unsoundness caused by interaction with canonization and rewriting 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-02-14 17:41:06 -08:00
Nikolaj Bjorner
25f53c0467 deal with warnings reported in https://launchpadlibrarian.net/522361319/buildlog_ubuntu-groovy-s390x.z3_4.8.10-1ubuntu4ppa1_BUILDING.txt.gz 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-02-11 13:49:47 -08:00
Nikolaj Bjorner
8ca2de41db turn on from/to code handling #5007 samples 2021-02-09 10:00:08 -08:00
Nikolaj Bjorner
a152bb1e80 remove template Context dependency in every trail object 2021-02-08 15:41:57 -08:00