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17045 commits 24 branches 48 tags 158 MiB
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61 commits

Author SHA1 Message Date
Jakob Rath
9d47d7959d helper functions to add constraints to univariate_solver 2022-03-17 14:08:00 +01:00
Jakob Rath
1de51da67e get univariate coefficients 2022-03-11 18:03:39 +01:00
Nikolaj Bjorner
8c9835bca6 smul no overflow 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-02-16 18:55:07 +02:00
Nikolaj Bjorner
cbbf1381f7 update to use incremental substitution 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-01-23 03:00:25 +01:00
Jakob Rath
28864e563c First version of refine_disequal_lin 2021-12-23 18:36:27 +01:00
Nikolaj Bjorner
f1d46b58a4 na 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-12-11 17:38:09 -08:00
Nikolaj Bjorner
6478e789e9 optimizations, fixes, TODO items 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-09-21 14:50:18 -07:00
Nikolaj Bjorner
1e3ff3179e handle empty clauses created as lemmas as unsat state. 
add unit tests
 2021-09-19 15:43:47 -04:00
Nikolaj Bjorner
fa3886136b adding Boolean propagation, watch; and factoring 2021-09-18 22:18:15 -04:00
Nikolaj Bjorner
611c28fc47 push outline of using cjust for overflow premise 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-09-09 09:56:00 +02:00
Nikolaj Bjorner
d8f0926620 re-adding saturation for inequalities 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-09-07 23:20:17 +02:00
Nikolaj Bjorner
04ce8ca5ef u256, separate viable_set 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-07-04 23:47:12 -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
Jakob Rath
c4963f4381
Polysat: add two more prototype rules (#5355) 
* Add try_div to PDDs

* x>y is false when x==y

* First version of the other two prototype rules

* More band-aid fixes...
 2021-06-18 08:48:50 -07:00
Jakob Rath
f83705bf9f
Polysat: first pass at forbidden intervals (not yet fully integrated into solver) (#5227) 
* Add interval class

* Take dependency as const reference

* Compute forbidden intervals for ule-constraints

* Add class for evaluated interval

* We need the evaluated bounds as well

* Don't add constraint to cjust multiple times (hack, to be improved later)

* typo

* More interval helpers

* Add constraint::ult factory function

* Fix forbidden interval condition

* Add solver::has_viable

* Add conflict explanation using forbidden intervals (not yet fully integrated into solver)
 2021-04-29 10:12:54 -07:00
Jakob Rath
2fac9e6e66
Add propagate/narrow for ule_constraint (#5214) 
* Add helper to check whether pdd is univariate and linear

* Reorganize propagate/narrow of eq_constraint

* Implement propagate/narrow for ule constraints

* Also push trail instruction in push_viable
 2021-04-23 08:41:02 -07:00
Jakob Rath
324d9ed461
Add more PDD utilities (div, pow) (#5180) 
* Expose 'inv' on rationals to get reciprocal value

* Align parameter names with implementation

* Add cached operation that divides PDD by a constant

* Fix display for constant PDDs

* operator^ should probably call ^ instead of + (mk_xor instead of add)

* Add helper function 'pow' on PDDs
 2021-04-14 04:48:42 -07:00
Nikolaj Bjorner
a0d112b7b0 general form migration 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-04-13 13:00:47 -07:00
Jakob Rath
0e9fc4762a Fix PDD factor cache in case GC happens while factoring (#5170) 
* Add method to find largest power of two that is a divisor

* Binary resolve on PDDs

* Add unit tests for binary resolve

* Fix factor cache access in case GC happens while factoring

* Coding conventions

* Change to gc_generation
 2021-04-12 11:20:40 -07:00
Jakob Rath
75c87a2869 Test and memoize pdd factoring (#5163) 
* Test and fix pdd_manager::factor

* Memoize pdd_manager::factor

* Fix Windows build (maybe)
 2021-04-12 11:20:40 -07:00
Nikolaj Bjorner
446654b680 na 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-04-12 11:20:39 -07:00
Nikolaj Bjorner
c2b353ba72 adding factorization 2021-03-26 14:58:24 -07:00
Nikolaj Bjorner
2fef6dc502 more scaffolding 2021-03-21 11:31:14 -07:00
Nikolaj Bjorner
d0e20e44ff booyah 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-07-04 15:56:30 -07:00
Nuno Lopes
e844aef896 remove a few more copy constructors, though still not enough to enable the assertion in vector 
I give up for now; there are too many copies left for little return..
 2020-06-03 20:32:13 +01:00
Nikolaj Bjorner
b889b110ee bool_vector, some spacer tidy 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-04-05 12:59:04 -07:00
Lev Nachmanson
06203d227e cleanup the grobner config init 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-01-28 10:04:21 -08:00
Lev Nachmanson
7ad95aa5d2 Nikolaj fixes pdd_manager::reduce() to work with the changed order 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-01-28 10:04:21 -08:00
Lev Nachmanson
d6a246777a Nikolaj implemented lm_lt on dd::pdd 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-01-28 10:04:21 -08:00
Lev Nachmanson
cca19ef1a7 unit tests for dd_pdd ordering 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-01-28 10:04:21 -08:00
Lev Nachmanson
61da9a8aeb test the new order on pdd 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-01-28 10:04:21 -08:00
Lev Nachmanson
407c8a60db reverse the order of vars for pdd_grobner, use pdd_grobner.reset() 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-01-28 10:04:21 -08:00
Lev Nachmanson
b5364b787c set level2var for m_pdd_manager of pdd_grobner 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-01-28 10:04:21 -08:00
Lev Nachmanson
610a2837ea rebase with Z3Prover 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-01-28 10:04:21 -08:00
Lev Nachmanson
5e19a52772 merge changes from Z3Prover 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-01-28 10:04:21 -08:00
Nikolaj Bjorner
301f9598a4 fixing leading term computation 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-01-08 12:10:23 -08:00
Nikolaj Bjorner
2acab46388 anf translation 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-01-05 21:09:52 -08:00
Nikolaj Bjorner
d27a949ae9 add anf and aig simplifier modules, cut-set enumeration, aig_finder, hoist out xor_finder from ba_solver 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-01-05 16:46:49 -08:00
Nikolaj Bjorner
40a4326ad4 add anf 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-01-05 16:46:49 -08:00
Nikolaj Bjorner
1d0572354b add bit-matrix, avoid flattening and/or after bit-blasting, split pdd_grobner into solver/simplifier, add xlin, add smtfd option for incremental mode logic 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-01-01 20:14:20 -08:00
Nikolaj Bjorner
1fd4c91fbf fixes to reset 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2019-12-28 15:31:20 -08:00
Nikolaj Bjorner
914856b9ba na 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2019-12-26 14:31:05 -08:00
Nikolaj Bjorner
2c6e6b1fdb resolve 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2019-12-26 02:30:12 -08:00
Nuno Lopes
d13f1310a7 fix build 2019-12-26 10:21:51 +00:00
Nikolaj Bjorner
50873c8094 reduce simplification 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2019-12-26 01:32:36 -08:00
Nikolaj Bjorner
65d818437a add simplification routines 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2019-12-25 19:31:18 -08:00
Nikolaj Bjorner
5a68fc8c07 fix pdd_stack for gc on reduce, add unit test for linear_simplify 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2019-12-25 11:05:59 -08:00
Nikolaj Bjorner
34ae55f4f5 fix gc bug 2019-12-23 18:29:42 -08:00
Nikolaj Bjorner
77868f3d96 added notes 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2019-12-23 12:32:02 -08:00
Nikolaj Bjorner
25b98f497a adding level2var 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2019-12-22 11:51:04 -08:00