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Code Activity
19291 commits 24 branches 48 tags 158 MiB
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1162 commits

Author SHA1 Message Date
Lev Nachmanson
245d448c66 fix term_o init 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2025-02-11 12:23:00 -10:00
Lev Nachmanson
a796d48264 debug dio 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2025-02-11 12:23:00 -10:00
Lev Nachmanson
df18885f97 debug dio 2025-02-11 12:23:00 -10:00
Lev Nachmanson
cd13890650 fix in substitution of fresh variables, clean column.h 2025-02-11 12:23:00 -10:00
Lev Nachmanson
f5e646cbcb bug fix in init and getting explanations 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2025-02-11 12:23:00 -10:00
Lev Nachmanson
59e2dab69a create a conflict explanation 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2025-02-11 12:23:00 -10:00
Lev Nachmanson
52653e6e43 a version with less pointers: got a conflict 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2025-02-11 12:23:00 -10:00
Lev Nachmanson
5a36e02c58 in the middle 2025-02-11 12:23:00 -10:00
Lev Nachmanson
122e0135d2 use std::list 2025-02-11 12:23:00 -10:00
Lev Nachmanson
3b22d3b19d fix the crash 2025-02-11 12:23:00 -10:00
Lev Nachmanson
abf29b57aa crash 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2025-02-11 12:23:00 -10:00
Lev Nachmanson
a5dd59fdfb fix the build 2025-02-11 12:23:00 -10:00
Lev Nachmanson
a1a01b9da6 move some functionality from int_solver to int_solver::imp 2025-02-11 12:23:00 -10:00
Lev Nachmanson
889292472e fix the build 2025-02-11 12:23:00 -10:00
Lev Nachmanson
3d6cc64e2e prepare for calling diophantine equations 2025-02-11 12:23:00 -10:00
Lev Nachmanson
097a25ebfe add parameter to control calling diophantine equations 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2025-02-11 12:23:00 -10:00
Nikolaj Bjorner
648cf9602e fix uninitialized variable warnings 2025-01-14 13:54:05 -08:00
Lev Nachmanson
27cc928631 try m_fixed_var_eh 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2025-01-14 07:11:53 -10:00
Nikolaj Bjorner
89ed4d6c8b use monomial variable, not the fixed variable 2025-01-14 07:27:59 -08:00
Nikolaj Bjorner
c01336553e move fixed variable propagation to nla_core/monomial_bounds 2025-01-13 18:18:53 -08:00
Nikolaj Bjorner
8d2b9b41fd fix compiler warnings 2025-01-12 13:39:13 -08:00
Nikolaj Bjorner
85356c5548 enable propagation when there are changed columns 
- to fix bug reported by Nikhil Swamy/F*
- deal with some compiler warnings by adding annotations
 2025-01-12 13:30:31 -08:00
Nikolaj Bjorner
9a237d55ca fix misc build warnings 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2025-01-11 17:41:24 -08:00
Nikolaj Bjorner
270c127407 sketch fixed variable callback mechanism 2025-01-08 12:50:46 -08:00
Nikolaj Bjorner
87f7a20e14 Add (updated and general) solve_for functionality for arithmetic, add congruence_explain to API to retrieve explanation for why two terms are congruent Tweak handling of smt.qi.max_instantations 
Add API solve_for(vars).
It takes a list of variables and returns a triangular solved form for the variables.
Currently for arithmetic. The solved form is a list with elements of the form (var, term, guard).
Variables solved in the tail of the list do not occur before in the list.
For example it can return a solution [(x, z, True), (y, x + z, True)] because first x was solved to be z,
then y was solved to be x + z which is the same as 2z.

Add congruent_explain that retuns an explanation for congruent terms.
Terms congruent in the final state after calling SimpleSolver().check() can be queried for
an explanation, i.e., a list of literals that collectively entail the equality under congruence closure.
The literals are asserted in the final state of search.

Adjust smt_context cancellation for the smt.qi.max_instantiations parameter.
It gets checked when qi-queue elements are consumed.
Prior it was checked on insertion time, which didn't allow for processing as many
instantations as there were in the queue. Moreover, it would not cancel the solver.
So it would keep adding instantations to the queue when it was full / depleted the
configuration limit.
 2024-12-19 23:27:57 +01:00
Nikolaj Bjorner
8f5658b77d add another baseline heuristic for string equalities, add cases for array axioms. 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2024-12-09 15:55:19 -08:00
Nikolaj Bjorner
1ab0962d43 partial fix to make computed term integer well-formed for solve_for functionality 2024-12-05 17:10:52 -08:00
Nikolaj Bjorner
05e053247d add facility to solve for a linear term over API 2024-11-30 09:34:27 -08:00
Nuno Lopes
3586b613f7 remove default destructors 2024-10-02 22:20:12 +01:00
Nikolaj Bjorner
d686e92bfa disambiguate 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2024-10-02 10:45:16 -07:00
Nikolaj Bjorner
93ff89bf98 add == for const_ref and ref to disambiguate equality. 2024-10-02 10:45:16 -07:00
Nikolaj Bjorner
551cc53a2f fix un-intialized variable warnings 2024-09-30 15:08:33 -07:00
Nikolaj Bjorner
826835fd7c fixes to build warnings 2024-09-30 08:23:31 -07:00
Nuno Lopes
499ed5d844 remove unneeded iterator functions 2024-09-23 12:59:04 +01:00
Nuno Lopes
737c2208fa delete more default constructors 
reduces code size by 0.1%
 2024-09-23 12:59:04 +01:00
Nuno Lopes
a62fede64b remove a few default constructors 2024-09-23 08:17:58 +01:00
Lev Nachmanson
342dccdc02 correctly process cancellation in gomory cuts 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2024-09-19 14:11:27 -07:00
Nikolaj Bjorner
48712b4f60 Add initial value setting for variables in Z3 API, solver, and optimize modules 2024-09-18 16:13:15 +03:00
David Seifert
2ce89e5f49
Gcc 15 two phase (#7313) 
* Fix `-Wclass-memaccess`

* Fix for GCC 15 two-phase lookup

* GCC 15 is more aggressive about checking dependent names:
  https://gcc.gnu.org/git/?p=gcc.git;a=commitdiff;h=r15-2117-g313afcfdabeab3

Bug: https://bugs.gentoo.org/936634
 2024-07-29 11:07:10 -07:00
Lev Nachmanson
e4b3df2189 remove unused column_info.h 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2024-06-17 12:58:16 -07:00
Bruce Mitchener
904a50fe49
Fix compilation error in column_info (#7235) 
Reference to `m_low_bound` should be `m_lower_bound`.
 2024-05-27 09:19:29 +04:00
Nikolaj Bjorner
8fe357f1f2
Nlsat simplify (#7227) 
* dev branch for simplification

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* bug fixes

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* bugfixes

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* fix factorization

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* separate out simplification functionality

* reorder initialization

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* reorder initialization

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* Update README.md

* initial warppers for seq-map/seq-fold

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* expose fold as well

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* add C++ bindings for sequence operations

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* add abs function to API

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* add parameter validation to ternary and 4-ary functions for API #7219

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* add pre-processing and reorder

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* add pre-processing and reorder

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

---------

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2024-05-14 22:19:33 -07:00
Nikolaj Bjorner
bebcd94703 enable logging nla lemmas 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2024-04-25 10:29:34 -04:00
Nikolaj Bjorner
974ea7b68d maintain ownership of dependency 2024-04-10 17:57:14 -07:00
Nikolaj Bjorner
7b8980f82d fix regression introduced when testing 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2024-04-09 11:17:03 -07:00
Nikolaj Bjorner
8d0e66b3e3 fix regression introduced when testing 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2024-04-09 11:16:34 -07:00
Nikolaj Bjorner
9a681b1a37 reorg sls 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2024-04-09 10:44:53 -07:00
Nikolaj Bjorner
361e04a18e port fixes to intblast 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2024-03-09 10:27:12 -08:00
Nikolaj Bjorner
5cac9b84e4 fix build warnings 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2024-02-01 09:36:52 -08:00
Nikolaj Bjorner
bdb9106f99
Api (#7097) 
* rename ul_pair to column

Signed-off-by: Lev Nachmanson <levnach@hotmail.com>

* t

Signed-off-by: Lev Nachmanson <levnach@hotmail.com>

* simple test passed

* remove an assert

* relax an assertion

* remove an obsolete function

Signed-off-by: Lev Nachmanson <levnach@hotmail.com>

* access a term by the term column

* remove the column index from colunm.h

* remove an unused method

* remove debug code

* fix the build of lp_tst

Signed-off-by: Lev Nachmanson <levnach@hotmail.com>

---------

Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
Co-authored-by: Lev Nachmanson <levnach@hotmail.com>
 2024-01-24 16:05:18 -08:00