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12211 commits 23 branches 48 tags 157 MiB
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84 commits

Author SHA1 Message Date
Lev Nachmanson 33cbd29ed0 mv util/lp to math/lp 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-01-28 10:04:21 -08:00
Lev Nachmanson 3b9b4d973b do not print external names in nla_solver 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-01-28 10:04:21 -08:00
Lev Nachmanson 1ab3957eea debug emons 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-01-28 10:04:21 -08:00
Lev Nachmanson 7f12dfbbe8 fix in rounding rows 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-01-28 10:04:21 -08:00
Lev Nachmanson 43758cbc66 more efficiend handling of rounded in cube heuristic rows 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-01-28 10:04:21 -08:00
Lev Nachmanson b47e0cd4fb fix tableau's Ax=b after cube heuristic 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-01-28 10:04:21 -08:00
Lev Nachmanson 9c62b431e4 address the NB's comments 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-01-28 10:04:21 -08:00
Lev Nachmanson 76e1aeb2bb move the indices housekeeping from theory_lra to lar_solver 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-01-28 10:04:21 -08:00
Lev Nachmanson 63e62ec1bb stronger lemmas to avoid branching 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-01-28 10:04:21 -08:00
Lev Nachmanson b102710b2f map term indices to columns when test checking lemmas 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-01-28 10:04:21 -08:00
Lev ca0ce579b1 work on order lemma 
Signed-off-by: Lev <levnach@hotmail.com>
 2020-01-28 10:04:21 -08:00
Lev 0470547842 work on test for order lemma 
Signed-off-by: Lev <levnach@hotmail.com>
 2020-01-28 10:04:21 -08:00
Lev Nachmanson 1d51c5689e roll back add_var api 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-01-28 10:04:21 -08:00
Lev 4fa38b5aa2 process conflicts immediately aftep add_var_bound() 
Signed-off-by: Lev <levnach@hotmail.com>
 2020-01-28 10:04:21 -08:00
Lev c9be7b89c1 change the add_var_bound() signature 
Signed-off-by: Lev <levnach@hotmail.com>
 2020-01-28 10:04:21 -08:00
Lev ca5666cabd add diagnostics for registering vars in lar_solver 
Signed-off-by: Lev <levnach@hotmail.com>
 2020-01-28 10:04:21 -08:00
Lev 9407c4e96f add an assert 
Signed-off-by: Lev <levnach@hotmail.com>
 2020-01-28 10:04:21 -08:00
Lev d1da26e176 add a unit test for the basic sign lemma with constraints 
Signed-off-by: Lev <levnach@hotmail.com>
 2020-01-28 10:04:21 -08:00
Lev 771cbb31bb test nla_solver 
Signed-off-by: Lev <levnach@hotmail.com>
 2020-01-28 10:04:21 -08:00
Lev 5344dedf42 going over the binary factor for basic lemmas 
Signed-off-by: Lev <levnach@hotmail.com>
 2020-01-28 10:04:21 -08:00
Lev c09c944922 rebase with upstream 
Signed-off-by: Lev <levnach@hotmail.com>
 2020-01-28 10:04:21 -08:00
Nikolaj Bjorner e16d8118ac going over niil_solver (#79) 
* change conflict to th_axiom

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* going over niil_solver

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-01-28 10:04:21 -08:00
Lev Nachmanson 0911fc2bda use explanation.h for conflict explanations everywhere 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-01-28 10:04:21 -08:00
Lev Nachmanson b4aaaffc99 work on niil base case 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-01-28 10:04:21 -08:00
Lev Nachmanson 91086baa54 check monomial values in niil_solver 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-01-28 10:04:21 -08:00
Lev Nachmanson f6291abccb change the type of lar_solver:get_model to a template 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-01-28 10:04:21 -08:00
Lev Nachmanson f2015b3f49 rename m_rounded_columns to m_incorrect_columns 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-01-23 15:31:07 -08:00
Lev Nachmanson 4ba4d41346 track rounded columns in lar_solver 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-01-23 17:21:55 -06:00
Lev Nachmanson 1fff7bb51d use u_map in lar_term 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2019-12-30 20:31:36 -08:00
Nikolaj Bjorner 9fa9aa09ff fix #2468, adding assignment phase heuristic 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2019-08-10 15:25:05 -07:00
Lev Nachmanson f336039da3 snap variables to bounds when maximizing terms 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2019-03-13 15:28:50 -07:00
Lev Nachmanson 06725de477 fixes in indices in lar_solver::maximize_term() 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2019-03-03 10:57:25 -10:00
Nikolaj Bjorner 3ee5c0e7d9 fix #2164 address some of simplification shortcommings from #2151 #2152 #2153 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2019-03-03 11:33:44 -08:00
Lev 99339798ee fix the value oflar_solver.m_status during pop() 
Signed-off-by: Lev <levnach@hotmail.com>
 2018-10-04 19:43:01 -07:00
Bruce Mitchener 373b691709 Use 'override' where possible. 2018-10-02 10:26:38 +07:00
Lev 5d586c8fd1 set lar_solver.m_status = UNKNOWN in the constructor 
Signed-off-by: Lev <levnach@hotmail.com>
 2018-09-30 15:12:50 -07:00
Lev Nachmanson 43f89dc2cc changes in column_info of lar_solver 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2018-09-22 12:01:24 -07:00
Nikolaj Bjorner d75b6fd9c1 remove offsets from terms 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2018-09-20 11:06:05 -07:00
Nikolaj Bjorner dcda39e76e merge 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2018-09-19 17:12:32 -07:00
Lev 324396e403 separate the gomory cut functionality in a separate file 
Signed-off-by: Lev <levnach@hotmail.com>
 2018-09-14 17:12:49 -07:00
Lev 26764b076f adjust cuts and branch (m_t and m_k) for terms 
Signed-off-by: Lev <levnach@hotmail.com>
 2018-09-14 12:39:46 -07:00
Lev 22213a9e73 rebase 
Signed-off-by: Lev <levnach@hotmail.com>
 2018-09-14 11:53:54 -07:00
Lev 5dee39721a rebase 
Signed-off-by: Lev <levnach@hotmail.com>
 2018-09-14 11:52:14 -07:00
Nikolaj Bjorner 6ea4aff622 add validation code for cuts, fix missing unit propagation 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2018-09-13 10:47:50 -07:00
Nikolaj Bjorner 1cb3f7c792 fixing #1520 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2018-07-28 18:03:13 -07:00
Lev Nachmanson f7ac096696 avoid a vector copy 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2018-07-15 15:29:13 -07:00
Lev Nachmanson e0e893b791 fix in hnf for the lower bounds 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2018-07-11 12:29:09 -07:00
Lev Nachmanson 2dfb8f53b6 do not add term to hnf if one of the vars has v.y value 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2018-07-11 10:59:55 -07:00
Lev Nachmanson 852df6f7d9 reshufle var_register to faster access 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2018-07-05 16:35:05 -07:00
Nikolaj Bjorner b6054b8406 add has_value utility to retrieve value from solver state 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2018-07-01 17:03:58 -07:00