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16747 commits 62 branches 52 tags 178 MiB
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68 commits

Author SHA1 Message Date
Nikolaj Bjorner
1faccffd0d add smul over and underflow predicate 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-02-20 11:39:45 +02:00
Nikolaj Bjorner
8c9835bca6 smul no overflow 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-02-16 18:55:07 +02:00
Nikolaj Bjorner
cd11b70864 add value-propagate flag to patch regression 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-01-23 12:09:49 +01:00
Nikolaj Bjorner
cbbf1381f7 update to use incremental substitution 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-01-23 03:00:25 +01:00
Nikolaj Bjorner
adb3d68743 fixes to literal propagation exposed by bitwise and unit test 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-12-19 15:21:12 -08:00
Nikolaj Bjorner
c1d5111159 add first test for band 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-12-18 12:28:59 -08:00
Nikolaj Bjorner
a2aa1170f9 rename to op-constraint to give space for other operations 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-12-15 09:20:11 -08:00
Nikolaj Bjorner
79bc33b88e na 2021-12-14 19:42:19 -08:00
Nikolaj Bjorner
6eb6eb39a4 more of shr 2021-12-14 19:23:31 -08:00
Nikolaj Bjorner
83efb1413a na 2021-12-11 08:41:04 -08:00
Nikolaj Bjorner
bf258ee29d add bit shorthand 2021-12-09 15:25:44 -08:00
Nikolaj Bjorner
a4fc63c542 initial overflow test 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-12-09 14:39:00 -08:00
Nikolaj Bjorner
0dcaf9b9f9 add ovfl constraint 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-12-09 09:05:23 -08:00
Nikolaj Bjorner
57c40e480b na 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-11-08 05:08:57 -08:00
Nikolaj Bjorner
813674087e wip 2021-10-04 14:43:33 -07:00
Nikolaj Bjorner
95e2d174c7 fixes 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-09-25 17:26:18 -07:00
Nikolaj Bjorner
a574eebd05 fixes, tests 2021-09-25 08:38:48 -07:00
Nikolaj Bjorner
e6c413b249 add variable minimization 2021-09-22 14:27:05 -07:00
Nikolaj Bjorner
c82bbaad7d update todos, working on assignment minimization 2021-09-22 13:29:36 -07:00
Nikolaj Bjorner
ce12c51083 remove last references to unit clauses 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-09-20 17:36:07 -07:00
Nikolaj Bjorner
8ee54c665a removing unit clauses and dependency manager, use minisat approach by tracking assumption literals directly also in clauses 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-09-20 15:10:03 -07:00
Nikolaj Bjorner
bb5ff8db24 rename conflict_core to conflict: 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-09-20 14:05:55 -07:00
Nikolaj Bjorner
c69c316b27 enable reduce_by, more tests 2021-09-19 13:41:39 -04:00
Nikolaj Bjorner
58c66ffee8 remove propagate_bool_at, it is technically not propagating but assigning 2021-09-19 08:47:14 -04:00
Nikolaj Bjorner
02a38009b9 remove disjunctive lemma feature 2021-09-19 07:33:20 -04:00
Nikolaj Bjorner
fa3886136b adding Boolean propagation, watch; and factoring 2021-09-18 22:18:15 -04:00
Nikolaj Bjorner
689c5b4e12 generalize level 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-09-15 16:46:30 +01:00
Jakob Rath
43fef8e8ba External constraints need to remember their sign 2021-09-14 09:50:07 +02:00
Jakob Rath
18710a86d7 print clauses 2021-09-13 17:44:19 +02:00
Nikolaj Bjorner
c082ea4357 update dep 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-09-13 17:35:36 +02:00
Nikolaj Bjorner
b36bc11b85 remove eq constraint, fix gc for external constraints 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-09-11 20:09:28 +02:00
Nikolaj Bjorner
f8a3857adb comments 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-09-11 16:55:49 +02:00
Nikolaj Bjorner
516ca06c28 levels take 1 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-09-10 15:40:25 +02:00
Nikolaj Bjorner
cfe4b30419 admit inequalities as premises 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-09-09 17:06:32 +02:00
Jakob Rath
56b33b1b3e resolve_bailout etc. 2021-09-06 14:08:07 +02:00
Jakob Rath
9f387f5738
Polysat: conflict resolution updates (#5534) 
* variable elimination / saturation sketch

* conflict resolution updates
 2021-09-03 10:17:06 -07:00
Jakob Rath
dc547510db
Polysat: conflict resolution wip (#5529) 
* conflict_core doesn't need gc() anymore

* update comments, ensure_bvar for new constraints

* Make sure constraints can only be created through constraint_manager

* fix constraint::display if no boolean variable is assigned

* Move clause into separate file

* Add conflict_core binary resolution

* conflict_core additions

* reactivate conflict resolution outer loop

* wip

* seems commented includes break CI build
 2021-09-01 09:10:10 -07:00
Nikolaj Bjorner
978bd9e560 remove scoped 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-08-31 08:55:48 -07:00
Jakob Rath
dde8fb0c37
Polysat updates (#5524) 
* Move boolean resolution into conflict_core

* Move store() into dedup functionality

* comments

* Call gc()

* Add inference_engine sketch
 2021-08-31 08:16:45 -07:00
Nikolaj Bjorner
d1118cb178 cc 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-08-30 11:45:41 -07:00
Nikolaj Bjorner
7cff3d4236 more code review 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-08-30 11:37:08 -07:00
Nikolaj Bjorner
7ea1bf12b6 add code review to constraint 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-08-30 11:11:55 -07:00
Jakob Rath
0c1e44da77
Polysat: constraint refactor cont'd, deduplicate constraints (#5520) 
* Assign boolean variables only to long-lived constraints, and deduplicate constraints when they are created

* scoped_signed_constraint

* update other classes

* fix

* Don't use scoped_ptr<constraint> with dedup()
 2021-08-30 10:00:27 -07:00
Jakob Rath
ebaea2159e
Polysat: use constraint_literal and begin move to core-based conflict representation (#5489) 
* Rename solver_scope for fixplex tests

(otherwise the wrong constructor is called for polysat's solver_scope)

* Update conflict_core

* simplify

* Be clearer about constraint_literal lifetime

* remove old comment

* Remove status (positive/negative) from constraint

* Use constraint_literal in the solver

* Fix build (constraint -> get_constraint)
 2021-08-18 11:02:46 -07:00
Jakob Rath
8a773d2bee
Polysat updates (#5444) 
* Simplify adding lemmas

* Remove misleading constructor from tmp_assign.

The idea is that tmp_assign is only created on the stack and
short-lived.  Instead of having a convenience constructor that takes a
constraint_ref, it's clearer to have an explicit .get() at the call
site.

* Remove some log messages

* bugfix

* fix

* Add stub for conflict_core

* wip

* Add example by Clemens
 2021-07-30 11:14:19 -07:00
Jakob Rath
3436b52c4a
Polysat: refactor constraints (#5372) 
* Refactor: remove sign and dep from constraint

* fix some bugs

* improve log messages

* Add missing premises to lemma

* Rename getter in an attempt to fix linux build
 2021-06-25 11:04:25 -07:00
Nikolaj Bjorner
dec37aee34 na 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-06-22 21:01:17 -07:00
Nikolaj Bjorner
01c81405af remove var-constraint alltogether 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-06-22 20:58:32 -07:00
Jakob Rath
d7b8ea2f7f
Polysat: minor fixes (#5364) 
* update include paths

* bdd fixes

* update/fix some tests

* work around assertion failure when constraint from clause becomes unit

* Remove old code

* use clause_builder

* Verify model when returning SAT

* log

* fix
 2021-06-22 09:27:18 -07:00
Nikolaj Bjorner
ce5c8b3066 rename to some saner name 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-06-21 16:19:37 -07:00