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Code Activity
17045 commits 24 branches 48 tags 158 MiB
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145 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
6df23fbce3 add note about a bug 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-01-26 16:58:00 -08:00
Nikolaj Bjorner
0eaf5a8510 factor cache pointers are invalid if the table is resized 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-01-26 16:18:18 -08:00
Nikolaj Bjorner
5e1ad37533 share subst node 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-01-23 10:39:42 +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
Jakob Rath
28864e563c First version of refine_disequal_lin 2021-12-23 18:36:27 +01:00
Nikolaj Bjorner
7bf76dd1f6 finally! 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-12-12 10:26:54 -08:00
Nikolaj Bjorner
f1d46b58a4 na 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-12-11 17:38:09 -08:00
Nikolaj Bjorner
59acd77981 n 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-12-11 13:01:08 -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
c69c316b27 enable reduce_by, more tests 2021-09-19 13:41:39 -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
d5ff672aaa generalize co-factor to handle cubes 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-07-05 14:10:09 +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
Nikolaj Bjorner
788de7d614 na 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-07-02 02:48:45 -07:00
Nikolaj Bjorner
05bcf0bed7 test sup 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-07-01 10:33:25 -07:00
Nikolaj Bjorner
5edc939b85 inf 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-06-30 21:29:28 -07:00
Nikolaj Bjorner
7d5a1acb61 test sup 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-06-30 21:12:00 -07:00
Nikolaj Bjorner
6eae7d71db sketch computation for sup 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-06-30 20:07:10 -07:00
Nikolaj Bjorner
b9f6fc5130 debug buidl 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-06-30 13:55:57 -07:00
Nikolaj Bjorner
5549301335 remove unreachable code 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-06-30 09:13:13 -07:00
Nikolaj Bjorner
b019477378 add cofactoring functionality 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-06-30 09:11:42 -07:00
Nikolaj Bjorner
a374e739f1 prepare for tuned viable sets 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-06-30 01:05:34 -04:00
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
6f93ed8dc2 moving out viable functionality 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-06-21 15:50:04 -07:00
Nikolaj Bjorner
19099244c4 na 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-06-20 12:38:20 -07:00
Nikolaj Bjorner
4fad0385de tune multiplication slightly 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-06-20 11:07:06 -07:00
Nikolaj Bjorner
4bcfcecbbb fix initialization/finalization order for bdd 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-06-19 23:11:06 -07:00
Nikolaj Bjorner
947ea66cad simplify output to use signed constants 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-06-18 17:39:13 -07:00
Nikolaj Bjorner
a049235caa simplify output to use signed constants 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-06-18 17:26:11 -07:00
Nikolaj Bjorner
f263045f96 modify mk_mul 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-06-18 17:18:16 -07:00
Nikolaj Bjorner
57df45dc16 Merge branch 'master' of https://github.com/z3prover/z3 into polysat 2021-06-18 10:02:33 -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
Nuno Lopes
f1e0d5dc8a remove a hundred implicit constructors/destructors 2021-05-23 14:25:01 +01:00
Nikolaj Bjorner
dc879dc3fb merge 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-05-03 12:41:14 -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
12444c7e8b
Phase saving and some minor changes (#5209) 
* Implement phase saving

* Implement signed comparison on BDD vectors

* Add fdd::non_zero

* Simplify construction of fdds over disjoint variables

* Minor changes to adding constraint
 2021-04-22 09:47:46 -07:00
Nikolaj Bjorner
fc60690742 tidy, initial polysat 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-04-20 12:21:50 -07:00
Nikolaj Bjorner
770c79a939 prepare for std::vector 2021-04-20 09:24:24 -07:00
Jakob Rath
77350d97da
BDD vectors: add subtract and quot_rem, move finite domain abstraction out of bdd_manager (#5201) 
* Coding style

* Simplify bddv class

* mk_eq: run loop from below

* Add unit test for bddv unsigned comparison

* Add test that shows contains_num/find_num fail after reordering

* Add BDD vector subtraction

* Call apply_rec in mk_ite_rec instead of apply

* Question about mk_quant

* Implement quot_rem over BDD vectors

* Move shl/shr to bddv

* Make unit test smaller

* Add class dd::fdd to manage association between BDDs and numbers

* Remove contains_num/find_num from bdd_manager
 2021-04-20 09:09:32 -07:00
Jakob Rath
4da1b7b03c
Add functionality for BDD vectors (#5198) 
* Fix XOR over BDDs

* Add operator<< for find_int_t

* Add equality assertion macro that prints expression values on failure

* Adapt contains_int and find_int to take externally-defined bits

* Add more operations on BDD vectors

* Remove old functions

* Additional bddv functions

* Rename some things

* Make bddv a class and add operators

* Fix find_num/contains_num calls
 2021-04-19 09:05:19 -07:00
Nikolaj Bjorner
0d65b19c20 cr 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-04-17 14:27:47 -07:00
Nikolaj Bjorner
4b35c75712 add code review and replacement for mk_int 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-04-17 14:19:17 -07:00
Nikolaj Bjorner
5706c7a93b addition 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-04-16 10:37:53 -07:00