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Code Activity
12001 commits 57 branches 52 tags 176 MiB
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88 commits

Author SHA1 Message Date
Lev
5c0f76a702 fix a bug in nla_solver's divide 
Signed-off-by: Lev <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
2993453798 remove explanation.reset() and fixes in add_var_bound() 
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
2fb63f559c rebase with up/master 
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
103808094a clear the model in lar_solver::get_model() 
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
Lev
822b0c1d5c in get_modele do not return values for terms 
Signed-off-by: Lev <levnach@hotmail.com>
 2020-01-28 10:04:21 -08:00
Lev Nachmanson
0644194fc9 work on lemma from product to factors, and some renaming 
Signed-off-by: Lev Nachmanson <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
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
b6f07e2a23 roll back changes in get_model 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-01-28 10:04:21 -08:00
Lev Nachmanson
0dbe8982ce simplify lar_solver::get_model 
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
c3ed06915c avoid the state change in an assert statement 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2019-12-31 14:03:48 -08:00
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
Lev Nachmanson
0f772482b8 remove an incorrect assert 
Signed-off-by: Lev Nachmanson <levnach@microsoft.com>
 2019-12-29 15:28:38 -08:00
Nikolaj Bjorner
876cfb4dc9 optimization of phase 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2019-08-12 09:50:31 -07:00
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
95eb0a0521 remove an unnecessary call m_mpq_lar_core_solver.m_r_solver.track_column_feasibility(j) 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2019-08-02 09:53:32 -07:00
Lev Nachmanson
db5ac5afa8 fix a bug in lar_solver in queryaing if a column is int 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2019-08-01 11:51:56 -07:00
Nikolaj Bjorner
90b78eb64a use random_next instead of library random 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2019-03-13 19:59:05 -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
Nikolaj Bjorner
0c0e79a937 add logging to lar-solver to capture state for unbounded optimization 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2019-03-03 20:33:12 -08:00
Nikolaj Bjorner
19e7b75536 set status optimal also on object 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2019-03-03 19:31:51 -08:00
Nikolaj Bjorner
7aa8b4ac2a restrict idiv-bound checks to bounded terms 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2019-03-03 19:11:22 -08:00
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 Nachmanson
69f03952a7 enable lar_solver::constraint_holds 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2019-02-28 12:11:34 -10:00
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
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
e68deab443 Merge branch 'master' of https://github.com/Z3Prover/z3 2018-09-25 13:34:23 -07:00
Lev Nachmanson
0b2b6b1306 assert all_constraints_hold() rarely 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2018-09-25 13:33:30 -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
Lev
ca3ce964ce work on Gomory cut 
Signed-off-by: Lev <levnach@hotmail.com>
 2018-09-18 13:34:05 -07:00
Lev
03d55426bb fixes in gomory cut 
Signed-off-by: Lev <levnach@hotmail.com>
 2018-09-15 17:15:46 -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
Lev Nachmanson
f810a5d8c3 remove an assert 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2018-09-10 15:22:48 -07:00