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521 commits

Author SHA1 Message Date
Lev Nachmanson
7758b519bc
Handle correctly cancelled run (#5695) 
* remove the bound on total iterations in simplex

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

* remove unncesseray checks in  get_freedom_interval_for_column()

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

* fix the build of test-z3

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

* Revert "remove unncesseray checks in  get_freedom_interval_for_column()"

This reverts commit 6770ed85e3.

* optimize get_freedom_interval_for_column() for feasible case

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

* add function lar_solver::status_feasible

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

* rename status_is_feasible() to is_feasible()

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

* fix the linux build

Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2021-12-05 18:38:37 -08:00
Nikolaj Bjorner
4928c28e63 fix #5675 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-11-19 08:42:32 -08:00
Nikolaj Bjorner
b6f7deacf4 fix #5663 2021-11-12 11:36:42 -08:00
Nikolaj Bjorner
63ac2ee0d1 #5614 turn on / off options to get better performance. 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-11-11 17:54:46 -08:00
Nikolaj Bjorner
87d4ce2659 working on #5614 
there are some different sources for the performance regression illustrated by the example. The mitigations will be enabled separately:
- m_bv_to_propagate is too expensive
- lp_bound_propagator misses equalities in two different ways:
   - it resets row checks after backtracking even though they could still propagate
   - it misses equalities for fixed rows when the fixed constant value does not correspond to a fixed variable.

FYI @levnach
 2021-11-02 14:55:39 -07:00
Nikolaj Bjorner
968717a532 follow on fix from #5528 
the same bug is also undetected in the main solver
 2021-09-01 20:49:39 -07:00
Nikolaj Bjorner
e05f5ef6d1 na 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-07-11 06:15:27 +02:00
Nikolaj Bjorner
5fac396c2f simplify some verbose trace-stream 2021-07-11 06:15:27 +02:00
Nikolaj Bjorner
66fc980154 add helper axioms for int2bv #5396 2021-07-10 17:13:16 +02:00
Nikolaj Bjorner
2156c74d51 #4702 
initial gcd test implementation for accumulated parity constraints
 2021-06-01 15:26:36 -07:00
Nikolaj Bjorner
c959e28d4a remove prints, remove ability to toggle eager_eq_axioms option 
NB. Spacer sets eager_eq_axioms option to false, but relevancy of this option is not clear at all as all other default paths don't use this option and theory_lra is incorrect when it is set to false.
 2021-05-20 04:26:45 -07:00
Nikolaj Bjorner
cc12e3ed38 fix #5280 2021-05-19 16:52:24 -07:00
Nikolaj Bjorner
4a6083836a call it data instead of c_ptr for approaching C++11 std::vector convention. 2021-04-13 18:17:35 -07:00
Lev Nachmanson
8848e5b4c3 correctly explain the all fixed test in the octaganal tree 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2021-04-10 08:54:52 -07:00
Lev Nachmanson
18610bf31f debug issue 5127 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2021-04-10 08:54:52 -07:00
Nikolaj Bjorner
1b503b8887 na 2021-04-06 20:09:51 -07:00
Nikolaj Bjorner
e5e663e874 fix for #5153 2021-04-06 20:09:50 -07:00
Nikolaj Bjorner
1fc9a7ba84 fix regression, fix #5115 2021-03-30 17:43:12 -07:00
Nikolaj Bjorner
c71bbb6391 fix #5136, regression when removing variable registration for mod/div operations 2021-03-30 13:45:54 -07:00
Nikolaj Bjorner
6bdf377e11 remove unneeded assertion fix #5131 2021-03-28 21:20:05 -07:00
Nikolaj Bjorner
6aa766a544 fix perf regression for new arithmetic solver, missing equality propagation #5106 2021-03-28 14:17:50 -07:00
Nikolaj Bjorner
d6691830c7 fix perf regression for new solver, missing equality propagations #5106 2021-03-28 14:17:50 -07:00
Nikolaj Bjorner
0c25d2560d improve diagnosability 2021-03-26 14:58:25 -07:00
Nikolaj Bjorner
e89071d366 #5125 2021-03-26 14:58:24 -07:00
Nikolaj Bjorner
ff0de59a70 more streamlined diagnostics to prepare for #5106 2021-03-15 16:23:35 -07:00
Nikolaj Bjorner
8412ecbdbf fixes to new solver, add mode for using nlsat solver eagerly from nla_core 2021-03-14 13:57:04 -07:00
Nikolaj Bjorner
857557ad93 deal with compiler warnings 2021-03-08 20:39:19 -08:00
Nikolaj Bjorner
88fbf6510f updates to theory_lra 2021-03-08 17:19:07 -08:00
Nikolaj Bjorner
026065ff71 streamline pb solver interface and naming after removal of xor 2021-02-28 12:32:04 -08:00
Nikolaj Bjorner
823830181b butterfly effect with relevancy marking 
bail out of infinite instantiation loop
 2021-02-15 16:37:23 -08:00
Nikolaj Bjorner
a6dce246f6 fix #5031 2021-02-15 14:36:01 -08:00
Nikolaj Bjorner
a152bb1e80 remove template Context dependency in every trail object 2021-02-08 15:41:57 -08:00
Nikolaj Bjorner
8f577d3943 remove ast_manager get_sort method entirely 2021-02-02 13:57:01 -08:00
Nikolaj Bjorner
3ae4c6e9de refactor get_sort 2021-02-02 04:45:54 -08:00
Nikolaj Bjorner
95d98ea8ce throttle equality propagation to shared expressions 2021-01-19 04:51:00 -08:00
Nikolaj Bjorner
d1dab327cd fix build 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-01-11 23:51:40 -08:00
Nikolaj Bjorner
fc3a642876 fix #4948 2021-01-11 19:26:16 -08:00
Nikolaj Bjorner
a164087384 remove cheap-eqs option as there is already propagate_eqs 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-12-21 11:04:04 -08:00
Nikolaj Bjorner
8ce08d57a0 na 2020-12-08 12:08:15 -08:00
Nikolaj Bjorner
4d55f83654 misc 2020-12-04 16:59:13 -08:00
Nikolaj Bjorner
6d427d9dae fix #4839 2020-12-02 12:46:24 -08:00
Nikolaj Bjorner
260f759177 fix #4835 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-11-29 20:06:32 -08:00
Nikolaj Bjorner
6d0b89a989 fix #4810 2020-11-22 15:37:55 -08:00
Nikolaj Bjorner
1269776777 remove experimental option. Fix #4806 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-11-20 11:46:19 -08:00
Nikolaj Bjorner
d0d06c288a rename 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-11-03 12:13:23 -08:00
Nikolaj Bjorner
620204bbb4
use value function in lar_solver (#4771) 
* use value function in lar_solver

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

* add missing return

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

* check_feasible is called after column is added for fixed variable

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

* na
 2020-11-03 01:08:24 -08:00
Nikolaj Bjorner
ee12e3fb52 add init_model, global m_delta, get_value, get_ivalue to push model maintainance into lar_solver #4740 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-11-02 19:21:15 -08:00
Nikolaj Bjorner
8d76470a8a fixes to mostly solver arith/euf and backtracking scopes 2020-10-26 11:06:41 -07:00
Nikolaj Bjorner
72d407a49f
mbp (#4741) 
* adding dt-solver

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

* dt

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

* move mbp to self-contained module

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

* files

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

* Create CMakeLists.txt

* dt

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

* rename to bool_var2expr to indicate type class

* mbp

* na

* add projection

* na

* na

* na

* na

* na

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

* deps

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

* testing arith/q

* na

* newline for model printing

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-10-21 15:48:40 -07:00
Nuno Lopes
e5cc613bf1 remove some dup map lookups (mentioned in perf sanitizer paper) 2020-10-21 14:12:05 +01:00