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793 commits

Author SHA1 Message Date
Nikolaj Bjorner
2865f60f8c deal with case of unsatisfiable context and bit-vector objectives that are not normalized to maxsmt. Issue #304 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2015-11-11 11:39:34 -05:00
Nikolaj Bjorner
b4cb51cdb3 working on Forking/Serializing a z3 Solver #209 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2015-11-06 17:29:24 -08:00
Nikolaj Bjorner
653416153d use appropriate MaxSAT solver even if there are no soft constraints. Also avoid PB constraints when all soft constraints are false. Reported by Klaus Becker 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2015-11-02 08:18:51 -08:00
Nikolaj Bjorner
7838213675 eliminate to_real coersions to make mixed integer problems easier to digest. Issue #277 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2015-10-30 15:12:21 -07:00
Nikolaj Bjorner
9b3e242990 adding rlimit resource limit facility to provide platform and architecture independent method for canceling activities 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2015-09-28 13:37:59 -07:00
Christoph M. Wintersteiger
f3441c6a9b tabs and indentation 2015-09-17 13:25:22 +01:00
Nikolaj Bjorner
b25e8e2288 tune lexicographic products, avoid push/pop and ensure correction sets are not used for multiple objectives 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2015-09-13 16:00:45 +02:00
Nikolaj Bjorner
cc5d719d9e enable incremental bit-vector solving 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2015-09-01 09:48:35 -07:00
Nikolaj Bjorner
0ed38ed59b add option for using corr set and use partial cores 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2015-08-30 14:48:24 -07:00
Nikolaj Bjorner
b2ebd095cb fix for unintialized variable m_conflict_lvl 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2015-08-24 17:01:46 -07:00
Nikolaj Bjorner
149549dd52 fix wcnf front-end and unsat case in pd 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2015-08-23 14:24:51 -07:00
Nikolaj Bjorner
ee458fa601 revising pd-maxres 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2015-08-23 12:09:07 -07:00
Nikolaj Bjorner
546a9b8f03 revising pd-maxres 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2015-08-23 10:53:39 -07:00
Nikolaj Bjorner
da0c12cdba move display method to before first SAT call 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2015-08-21 18:29:36 -07:00
Nikolaj Bjorner
a78fc031bc adding facility to dump wcnf benchmarks 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2015-08-21 07:26:49 -07:00
Nikolaj Bjorner
a9807878ea reworking pd-maxres 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2015-08-20 12:20:30 -07:00
Nikolaj Bjorner
e3cb0e2d8b reworking pd-maxres 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2015-08-20 12:06:27 -07:00
Nikolaj Bjorner
980e74b4ff add tactic to recognize small discrete domains and convert them into bit-vectors 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2015-08-20 06:39:11 -07:00
Nikolaj Bjorner
655b44c07b make :weight understand both decimal and integral values, remove dweight, remove deprecated commands for optimization 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2015-08-15 00:48:22 +02:00
Nikolaj Bjorner
eb5af100bd adding optimize bindings for ML, adding get_reason_unknown to optimize, mentioned in pull request issue #188, second edition 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2015-08-09 17:49:20 +02:00
Nikolaj Bjorner
aa431bb67f ensure pb on lex > 1 constraints 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2015-08-08 14:10:11 +02:00
Nikolaj Bjorner
a3c43c34fb change default behavior of solver pretty printer to include declarations 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2015-08-06 18:57:11 +02:00
Nikolaj Bjorner
f96c0b6963 fixes #186, remove ite-lifting from opt_context to detect weighted maxsat 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2015-08-06 11:52:59 +02:00
Nikolaj Bjorner
4bc044c982 update header guards to be C++ style. Fixes issue #9 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2015-07-08 23:18:40 -07:00
Nikolaj Bjorner
77c8e5b0a0 add model on unknown, to address issue #139 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2015-06-23 14:45:52 +02:00
Nikolaj Bjorner
564da787fb add count of memory allocations and way to limit allocations globally. Fix purification in nlsat_smt to fix regressions on QF_UFNRA 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2015-06-22 07:45:40 +02:00
Nikolaj Bjorner
4675643271 fixes to githup issue #133 and stackoverflow reported bug on assertion violation in poly_simplifier_plugin 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2015-06-21 13:49:15 -07:00
Nikolaj Bjorner
6f0d76a62e Merge branch 'unstable' of https://github.com/Z3Prover/z3 into unstable 2015-06-21 09:39:32 -07:00
Nikolaj Bjorner
fe7c577d99 isolate inc_sat_solver 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2015-06-21 01:54:52 -07:00
Nikolaj Bjorner
d06207f072 remove ite terms from objectives to synchronize values in tableau with objective value. Fixes part of (three repros) from issue #120 
Signed-off-by: Nikolaj Bjorner <nbjorner@hotmail.com>
 2015-06-02 10:38:22 -07:00
Nikolaj Bjorner
ffff006945 remove old files 
Signed-off-by: Nikolaj Bjorner <nbjorner@hotmail.com>
 2015-06-02 09:15:08 -07:00
Nikolaj Bjorner
1714182c38 Merge branch 'unstable' of https://github.com/Z3Prover/z3 into unstable 2015-05-29 11:08:25 -07:00
Nikolaj Bjorner
a2448be0cd print pareto model in check-sat too 
Signed-off-by: Nikolaj Bjorner <nbjorner@hotmail.com>
 2015-05-29 08:55:44 -07:00
Nikolaj Bjorner
ed7e0e11a8 n/a 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2015-05-28 20:55:13 -07:00
Nikolaj Bjorner
203c5015c8 fix debian amd64 warnings 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2015-05-18 15:17:21 -07:00
Nikolaj Bjorner
5632900f35 fix gcc compiler warnings 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2015-05-16 12:04:10 +01:00
Nikolaj Bjorner
64bd62b17e fix gcc compiler warnings 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2015-05-16 11:56:04 +01:00
Nuno Lopes
6c22edc988 fix assorted compiler warnings 
Signed-off-by: Nuno Lopes <nlopes@microsoft.com>
 2015-05-16 11:44:58 +01:00
Nikolaj Bjorner
e6b8af402f fix build warnings 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2015-05-15 15:56:21 +01:00
Nikolaj Bjorner
a0f0b53686 fixes to #52, #53 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2015-04-28 14:48:59 -07:00
Nikolaj Bjorner
bd162588b2 enable SAT solver by default for MaxSAT constraints 
Signed-off-by: Nikolaj Bjorner <nbjorner@hotmail.com>
 2015-04-02 17:09:01 -07:00
Nikolaj Bjorner
e944f89505 fix bug introduced when clearing state between calls to Pareto/Box 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2015-04-02 02:36:01 -07:00
Nikolaj Bjorner
fc36d861a7 update default to maxres for MaxSAT, reset pareto and box state on every constraint update 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2015-04-01 19:32:50 -07:00
Nikolaj Bjorner
f8d04118d8 switch models for multiple box objectives. Feature request at codeplex issue 194, George Karpenov. Usage model is same as Pareto fronts you call check-sat multiple times until retrieving unsat 
Signed-off-by: Nikolaj Bjorner <nbjorner@hotmail.com>
 2015-04-01 16:21:56 -07:00
Nikolaj Bjorner
52619b9dbb pull unstable 
Signed-off-by: Nikolaj Bjorner <nbjorner@hotmail.com>
 2015-04-01 14:57:11 -07:00
nikolajbjorner
fe6af38d97 debugging assertion violation 
Signed-off-by: nikolajbjorner <nbjorner@microsoft.com>
 2015-03-10 20:57:01 -07:00
nikolajbjorner
fbf8289394 probe also hard constraints before enabling SAT solver. Bug reported by Zvonimir Pavlinovic 
Signed-off-by: nikolajbjorner <nbjorner@microsoft.com>
 2015-02-24 14:02:23 -08:00
Nikolaj Bjorner
c3232693f0 use PB solver instead of full arithmetic for bouding Pareto fronts so that difference logic theory isn't broken. Codeplex issue 175 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2015-02-22 09:46:21 -08:00
Nikolaj Bjorner
911ffc370a separate MaxSMT functionality to enable using this independently (and incrementally) of overall context 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2015-02-16 09:11:28 +01:00
Nikolaj Bjorner
8141dadc89 break on small cores 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2015-02-08 10:22:06 +01:00