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56 commits

Author SHA1 Message Date
Nikolaj Bjorner 8032217fd1 tuning and fixing consequence finding, adding dimacs evaluation 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2017-04-26 13:53:37 -07:00
Nikolaj Bjorner ec29a03c8f add facility to dispense with cancellation (not activated at this point). Address #961 by expanding recurisve function definitions that are not tautologies if the current model does not validate 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2017-04-07 21:22:38 -07:00
Nikolaj Bjorner e47e8c67c0 introducing scoped detacth/attach of clauses to enforce basic sat solver invariants. Part of investigating #939: 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2017-03-22 14:12:47 -07:00
Nikolaj Bjorner 256a0e2d82 move exchange par 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2017-02-01 12:12:26 -08:00
Nikolaj Bjorner 37ee4c95c3 adding parallel threads 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2017-01-30 02:09:08 -08:00
Nikolaj Bjorner 962979b09c rework sat.mus to use restart count for bounded minimization 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2017-01-26 13:28:40 -08:00
Nikolaj Bjorner 873d975c77 fix bug in consequence extraction: the order of bcp is not fixed between restarts, so the order of unit literals may not be preserved. This is relatively rare, so we optimize for the case where we assume bcp preserves order (and maybe miss some consequences) 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2017-01-17 13:41:15 -08:00
Nikolaj Bjorner 7df803c131 Fix unsound handling of upper bounds in wmax, thanks to Patrick Trentin for report and careful repros #847 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2017-01-15 11:52:48 -08:00
Nikolaj Bjorner bc6b3007de remove unused features related to weighted check-sat 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2017-01-13 20:53:22 -08:00
Nikolaj Bjorner c69a86e647 fix bug in antecedent collection for consequence finding: once an antecedent is set, it should not be cleared 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2017-01-06 19:34:50 -05:00
Nikolaj Bjorner 74d3de01b3 enable incremental consequence finding with restart timeout 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2017-01-02 10:07:02 -08:00
Nikolaj Bjorner aaf6e67ec8 add restart.max parameter to control cancellation based on restart count 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2016-12-25 17:43:47 -08:00
Nikolaj Bjorner ea601dd403 fix and coallesce clique functionality 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2016-11-19 03:55:48 -08:00
Christoph M. Wintersteiger bfaa9ddf63 Fixed potential SAT solver cleanup problem. Renamed functions for consistency. Relates to #570. 2016-11-14 17:42:21 +00:00
Christoph M. Wintersteiger 520e868add Fixed interruption cleanup bug in sat_solver. Relates to #570. 2016-11-14 17:42:20 +00:00
Nikolaj Bjorner aec59e4ff7 add consequence finding to inc-sat-solver 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2016-10-16 15:43:28 -04:00
Nikolaj Bjorner 619cce0a52 add mutex preprocessing to maxsat, add parsing functions to C++ API 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2016-10-07 12:42:08 -07:00
Nikolaj Bjorner baee4225a7 reworking cancellation 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2015-12-11 16:21:24 -08:00
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
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 2fe0c05556 tuning pd-maxres 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2015-08-28 20:25:25 -07:00
Nikolaj Bjorner 78313c614d updateing pd-maxres 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2015-08-27 15:43:35 -07:00
Nikolaj Bjorner 8622356375 working on pd-maxres 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2015-08-27 08:09:46 -07:00
Nikolaj Bjorner 7c47809973 reworking pd-maxres 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2015-08-26 16:33:53 -07:00
Nikolaj Bjorner af9143b64a tune initial propagation for pd-maxres 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2015-08-25 17:15:31 -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 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
Christoph M. Wintersteiger 5e0aaee2c7 Made num_clauses in sat_solver public 2015-08-04 15:26:03 +01:00
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
Christoph M. Wintersteiger 9a62d989e6 Revert "Merge branch 'unstable' of https://github.com/Z3Prover/z3 into unstable" 
This reverts commit d3db21ccde, reversing
changes made to e463d5d899.
 2015-06-24 17:06:04 +01:00
Aleksandar Zeljic f6f16c1e92 Added smallFloats files. 2015-05-28 14:31:34 +02:00
Nikolaj Bjorner 52619b9dbb pull unstable 
Signed-off-by: Nikolaj Bjorner <nbjorner@hotmail.com>
 2015-04-01 14:57:11 -07:00
Nuno Lopes 89c43676d5 save memory in the sat solver to tentatively speed things up. 
I get a slight speedup on my benchmarks. There's still one extra sign extend, which will be removed in a follow-up patch

Signed-off-by: Nuno Lopes <a-nlopes@microsoft.com>
 2015-03-02 09:50:35 +00:00
Nikolaj Bjorner 989569b154 add bceq experiment 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2014-09-29 10:57:31 -07:00
Nikolaj Bjorner 73070585b8 fix bug in core generation in legacy core: it ignores complementary literals 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2014-09-14 13:06:01 -07:00
Nikolaj Bjorner a47f3df703 fix bug in unsat core extraction in sat solver 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2014-08-18 23:43:51 -07:00
Nikolaj Bjorner f748a03ac7 opt 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2014-08-16 22:31:54 -07:00
Nikolaj Bjorner ee1a1b1135 refactor sat/sls interface. Remove wpm2 and bvsls dependencies 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2014-08-15 10:40:44 -07:00
Nikolaj Bjorner a02cab2194 wsls code 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2014-08-13 16:58:02 -07:00
Nikolaj Bjorner 999db1e280 sls 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2014-08-13 01:22:45 -07:00
Nikolaj Bjorner 1412c183d4 finish sls code 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2014-08-12 21:42:33 -07:00
Nikolaj Bjorner e832bdd257 fix bug in blocked clause elimination that was enabled for external variables, fix other bugs in maxres 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2014-08-10 21:23:05 -07:00
Nikolaj Bjorner 8814ba0629 testing maxres with sat core 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2014-08-02 12:27:57 -07:00
Nikolaj Bjorner b928734348 perf improvements, mus 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2014-08-01 16:11:52 -07:00
Nikolaj Bjorner 39414d8b8d testing inc_sat 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2014-07-31 22:29:47 -07:00
Nikolaj Bjorner 4f0de9a0cf implement user scopes for sat solver 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2014-07-30 09:27:03 -07:00
Nikolaj Bjorner 0e9511b597 unsat core for SAT solver 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2014-07-29 08:39:34 -07:00
Nikolaj Bjorner 66f626b50e local changes 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2014-07-29 07:41:08 -07:00