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Code Activity
19444 commits 24 branches 48 tags 158 MiB
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4341 commits

Author SHA1 Message Date
Nikolaj Bjorner
f977b48161 adjust solve_for to handle rationals 2025-02-17 13:59:23 -08:00
Nikolaj Bjorner
b27a2aa7fc remove calls to removed def constructor 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2025-02-16 10:13:00 -08:00
Lev Nachmanson
e920291393 fixing the default parameters of dio and rename m_gomory_cuts to m_cuts 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2025-02-11 12:23:00 -10:00
Lev Nachmanson
957b177c64 set arith.lp.dio_cuts_enable_gomory to False by default 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2025-02-11 12:23:00 -10:00
Lev Nachmanson
79e3f8ab39 disabling dio handler by default, and fix a print out 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2025-02-11 12:23:00 -10:00
Lev Nachmanson
134bed826a throttle the branching in dio 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2025-02-11 12:23:00 -10:00
Lev Nachmanson
a19e10912f make dio less aggressive, allow other cuts 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2025-02-11 12:23:00 -10:00
Lev Nachmanson
71c433908c work on incremental version 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2025-02-11 12:23:00 -10:00
Lev Nachmanson
2ebb957cc8 enable cuts from proofs 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 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
097a25ebfe add parameter to control calling diophantine equations 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2025-02-11 12:23:00 -10:00
Clemens Eisenhofer
acd48b6a30
Fixing #7465 (#7551) 
* Fixed bug in UP

* Put decrement at the right position

* Fixed replaying in UP

* Set UP persist clauses to false
 2025-02-11 09:20:25 -08:00
Can Cebeci
af270da785
Fix complete_partial_func for finite domains (#7547) 2025-02-05 16:14:55 -08:00
Nikolaj Bjorner
17d47ca8c7 fix #7493 2025-02-02 15:00:31 -08:00
Nikolaj Bjorner
fd2a8a554d disable small clause generation for propagation 2025-02-01 20:04:29 -08:00
Nikolaj Bjorner
fa605454fb fix crash reported by Nikhil on F* due to unhandled exception while using the rewriter during search 2025-01-28 16:27:28 -08:00
Jonáš Fiala
2050fc3b35
Preserve fingerprint in trace (#7534) 2025-01-27 13:09:48 -08:00
Can Cebeci
2d8f024680
Mark fixed_eq literals as relevant (#7533) 2025-01-27 11:10:46 -08:00
Nikolaj Bjorner
0e8969ce60 deal with compiler warnings and include value exchange prior to final check. 2025-01-24 09:40:33 -08:00
Nikolaj Bjorner
4d33f442b9 enable value import in parallel mode 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2025-01-22 22:45:01 -08:00
Nikolaj Bjorner
beb9d2e553 update restart next 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2025-01-22 21:40:35 -08:00
Nikolaj Bjorner
ec3915218d modify backoff mechanisms and theory exchange 2025-01-22 20:32:30 -08:00
Nikolaj Bjorner
a941f5ae84 reset m_conflict indicator on sls model 2025-01-15 20:56:44 -08:00
Nikolaj Bjorner
557c01a0e5 fix #7499 - add another way to avoid adding user-defined functions to models if user don't want it 
- you can already do model.user_functions=false
- now you can also specify smtlib2_compliant (globally) and get smtlib2 behavior
 2025-01-15 19:52:04 -08:00
Nikolaj Bjorner
158dea575b add case for ite 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2025-01-15 19:07:18 -08:00
Nikolaj Bjorner
eed3fa6d49 add case for ite 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2025-01-15 18:54:50 -08:00
Nikolaj Bjorner
f422e26b3c add case for ite 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2025-01-15 18:53:26 -08:00
Nikolaj Bjorner
5365952796 fix #7510 2025-01-15 13:12:20 -08:00
Nikolaj Bjorner
878fd48819 fix compiler warning 2025-01-14 16:38:22 -08:00
Nikolaj Bjorner
31d4ba0009 re-introduce option to dump arithmetic lemmas to std-out 2025-01-14 13:54:56 -08:00
Nikolaj Bjorner
8c5abdf818 Can's fix to relevancy propagation 2025-01-14 08:14:53 -08:00
Nikolaj Bjorner
c01336553e move fixed variable propagation to nla_core/monomial_bounds 2025-01-13 18:18:53 -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
f9ce41bd2b Update theory_lra.cpp 2025-01-08 15:41:08 -08:00
Nikolaj Bjorner
270c127407 sketch fixed variable callback mechanism 2025-01-08 12:50:46 -08:00
Nikolaj Bjorner
5a5570ef4e remove type check in insert_update 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2025-01-06 11:12:08 -08:00
Nikolaj Bjorner
23c4728d68 remove some platform specific behavior 2024-12-23 16:28:10 -08:00
Nikolaj Bjorner
554191885e remove platform dependent print 2024-12-23 16:13:36 -08:00
Nuno Lopes
97c70ba501 remove some uneeded constructors 2024-12-22 15:06:58 +00:00
Nikolaj Bjorner
fb5bbb8074 read laziness parameter modulo relvancy to avoid race conditions with setting relevancy = 0 2024-12-22 14:07:29 +01:00
Nikolaj Bjorner
78ce6c1c6c revert relevancy override 2024-12-21 18:10:10 +01:00
Nikolaj Bjorner
07b1ee5dcc mask regression on fpa by not auto-setting relevancy=0 2024-12-21 12:41:04 +01:00
Nikolaj Bjorner
da6a5facca revert change to setup_context that delays it until there are assertions 2024-12-21 11:53:46 +01:00
Nikolaj Bjorner
db9f45dfec set relevancy = 0 in auto-config mode when there are bit-vectors and no quantifiers, #7484 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2024-12-20 18:10:46 +01:00
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
538f74d64c extract stats with finalize for parallel mode 2024-12-13 09:30:49 -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
a17d4e68eb bugfix to elim_uncnstr to ensure nodes are created. Prepare smt_internalizer to replay unit literals 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2024-12-04 15:32:15 -08:00
Nikolaj Bjorner
05e053247d add facility to solve for a linear term over API 2024-11-30 09:34:27 -08:00