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Code Activity
13766 commits 24 branches 48 tags 158 MiB
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53 commits

Author SHA1 Message Date
Lev Nachmanson
ba40a5752f better branching with usage_in_terms() 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-04-28 15:27:49 -07:00
Lev Nachmanson
530f77281c fixes in branching 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-04-26 16:13:47 -07:00
Lev Nachmanson
8921ed56b5 fix a bug in Horner heuristic 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-04-23 15:58:53 -07:00
Lev Nachmanson
1f23ae8aae fix the test build 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-04-16 12:58:39 -07:00
Lev Nachmanson
5208b64a6b expose only necessary methods of lar_solver 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-04-16 12:58:39 -07:00
Lev Nachmanson
7caae3f5d2 small improvements in tableau in rows and bound propagation 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-04-13 16:04:25 -07:00
Nikolaj Bjorner
21a31fcd26 add missing fixed propagations on negated integer inequalities 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-04-11 02:28:38 -07:00
Lev Nachmanson
5c9fd90031 work on random_updates 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-04-07 19:50:50 -07:00
Nikolaj Bjorner
c2e5cd78c8 change lar_terms to use column indices 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-04-06 12:13:59 -07:00
Nikolaj Bjorner
080dbb13b0 tv alignment, code review comments 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-04-05 03:35:19 -07:00
Nikolaj Bjorner
fddbac0f52 use tv for interfacing on get_term 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-04-05 02:42:00 -07:00
Nikolaj Bjorner
0735491557 path fix #3747, this patches incoherent behavior of terms / ival from lar_solver. The variables occurring in terms are mapped to columns and not as original variables/terms. theory_lra has to interact with the column_corresponds_to_term test instead of relying on the terms themselves carrying the relevant information 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-04-04 14:27:56 -07:00
Nikolaj Bjorner
031b3a55ef fix #3733 persist uninterpreted atoms across calls to incremental sat solver 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-04-04 13:11:39 -07:00
Nikolaj Bjorner
c6b4641050 fix #3649 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-04-01 10:56:27 -07:00
Lev Nachmanson
cf0952c232 roll back in maximize_term if the integrality is broken 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-03-30 17:59:45 -07:00
Lev Nachmanson
7936df8e0b pass std::function as const aliases 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-03-30 12:20:47 -07:00
Lev Nachmanson
7a950dd667 patch reals 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-03-29 15:03:46 -07:00
Lev Nachmanson
f5b62015fc change the return type of ival.var() to tv 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-03-25 19:43:55 -07:00
Lev Nachmanson
09467ba677 restore some class names by replacing u_set to int_set 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-03-25 19:43:55 -07:00
Lev Nachmanson
ea964e5c3b rename int_set to u_set 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-03-25 19:43:55 -07:00
Lev Nachmanson
316f2194e0 rename 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-03-25 19:43:55 -07:00
Nikolaj Bjorner
e50082b484 add tv 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-03-25 19:43:55 -07:00
Lev Nachmanson
8af245a410 use a simpler encoding for term indices 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-03-25 19:43:55 -07:00
Lev Nachmanson
31937f0b91 round the bound for columns and terms when it can be deduced that they are integral 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-03-25 19:43:55 -07:00
Lev Nachmanson
906d52ca1c accept term indices as columns in some lar_solver queries 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-03-25 19:43:55 -07:00
Nikolaj Bjorner
b67d136849 hide flag on registering variables 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-03-25 19:43:55 -07:00
Lev Nachmanson
26631ce38d add a unit test for monics, plus some cosmetic changes 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-03-25 19:43:55 -07:00
Lev Nachmanson
a80eb13420 fixes in bound setting in cube, and in lar_solver 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-03-25 19:43:55 -07:00
Lev Nachmanson
6ea0bcb454 round the bound for columns and terms when it can be deduced that they are integral 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-03-25 19:43:55 -07:00
Lev Nachmanson
762f265616 merge with master 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-03-25 19:43:55 -07:00
Nikolaj Bjorner
02b074e28b compile constraints during internalization 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-02-07 19:28:17 -08:00
Nikolaj Bjorner
800bc757ae isolate constraints in a constraint_set 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-02-07 09:24:45 -08:00
Nikolaj Bjorner
024ca86386 isolate constraints in a constraint_set 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-02-07 09:16:14 -08:00
Nikolaj Bjorner
a59745c2f2 isolate constraints in a constraint_set 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-02-07 09:13:40 -08:00
Nikolaj Bjorner
2d59b81353 delay evaluation of model, throttle propagation, introduce LUT results into cutset 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-02-05 12:33:42 -08:00
Lev Nachmanson
35aa98436f fix term columns after rounding in cube() 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-01-30 14:29:36 -08:00
Lev Nachmanson
0e86c567cc prepare the mixed case 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-01-28 10:04:21 -08:00
Lev Nachmanson
d310ae9060 rebase with Z3Prover 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-01-28 10:04:21 -08:00
Lev Nachmanson
0b1023c2c7 do not add row with free basic vars in grobner, more tracing 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-01-28 10:04:21 -08:00
Lev Nachmanson
06dbc623c7 start porting grobner basis functionality 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-01-28 10:04:21 -08:00
Lev Nachmanson
f4e7002ea3 forgotten changes after a rebase 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-01-28 10:04:21 -08:00
Lev Nachmanson
1b8b09cddb fixes in horner's heuristic 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-01-28 10:04:21 -08:00
Lev Nachmanson
c95f66e02a toward fetching existing terms intervals from lar_solver 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-01-28 10:04:21 -08:00
Lev Nachmanson
dfe0e85629 toward fetching existing terms intervals from lar_solver 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-01-28 10:04:21 -08:00
Lev Nachmanson
3c5b1086a1 fix remove lar_solver::add_constraint 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-01-28 10:04:21 -08:00
Lev Nachmanson
7cd90537c3 look expressions in terms at the beginning 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-01-28 10:04:21 -08:00
Lev Nachmanson
87cc5c8d96 fix a bug in nla_expr 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-01-28 10:04:21 -08:00
Lev Nachmanson
2181c982e8 progress with horner's heuristic 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-01-28 10:04:21 -08:00
Lev Nachmanson
3f6ecfb3b6 generate lemmas from nla_intervals 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-01-28 10:04:21 -08:00
Lev Nachmanson
c121c5d2d8 remove dead code 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-01-28 10:04:21 -08:00