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1216 commits

Author SHA1 Message Date
Nikolaj Bjorner fc77345bec breaking change. Enforce append semantics everywhere for parameter updates #5744 
Replace semantics doesn't work with assumptions made elsewhere in code.
The remedy is to apply append (override) semantics for parameter changes.
 2021-12-30 19:11:14 -08:00
Nikolaj Bjorner b69ad786f2 na 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-12-08 09:04:13 -08:00
Nikolaj Bjorner e45ae32685 unsound equality propagation #5676 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-12-08 09:02:05 -08:00
Nikolaj Bjorner 9f2b18cac5 add tactic name 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-12-07 13:37:57 -08:00
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 1618c970df adding checks 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-12-03 13:17:48 -08:00
Nikolaj Bjorner 970347e797 infeas 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-12-03 13:00:52 -08:00
Lev Nachmanson d50c4bfcc1 remove an unused var 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2021-11-28 09:44:50 -08:00
Nikolaj Bjorner 3c16edc8d3 check for v1 == v2 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-11-12 09:11:17 -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
Henrich Lauko 96671cfc73
Add and fix a few general compiler warnings. (#5628) 
* rewriter: fix unused variable warnings

* cmake: make missing non-virtual dtors error

* treewide: add missing virtual destructors

* cmake: add a few more checks

* api: add missing virtual destructor to user_propagator_base

* examples: compile cpp example with compiler warnings

* model: fix unused variable warnings

* rewriter: fix logical-op-parentheses warnings

* sat: fix unused variable warnings

* smt: fix unused variable warnings
 2021-10-29 15:42:32 +02:00
Nikolaj Bjorner 3036b88f09 support threading for TRACE mode 2021-10-25 13:35:32 +02:00
Nikolaj Bjorner d174f87c5e #5532 2021-09-21 20:21:23 -07:00
Nikolaj Bjorner 2e96557827 fix #5560 - add a throttle on maximal size of bignums created for propagate-value lemmas 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-09-21 08:55:28 -07:00
Nikolaj Bjorner 72f6271d82 #5532 
bugs in:
- rewriting of 0-ary expressions was incomplete
- sharing annotations when a node has two theories attached it is shared
- sharing of const of an array

Remove unreadable part of pretty printer for lp solver.
 2021-09-06 19:14:03 +02:00
Nikolaj Bjorner da60abd84b #5445 2021-08-03 11:19:42 -07:00
Nikolaj Bjorner 202ed79a24 #5445 2021-08-03 11:17:23 -07:00
Nikolaj Bjorner a4cc9e7895 #5429 #5445 2021-08-01 12:49:36 -07:00
Nikolaj Bjorner 16413b4f9a #5429 2021-07-27 17:18:22 -07:00
Nikolaj Bjorner 005d35f9c9 #5422 2021-07-21 07:39:39 -07:00
Nikolaj Bjorner ca8f914dd8 #5422 2021-07-21 07:22:05 -07:00
Nikolaj Bjorner b0a22105d6 na 2021-07-19 13:28:20 -07:00
Nikolaj Bjorner 188a478214 #5417 
strict inequality (over reals) require solving for least-upper/greatest-lower bounds that may coincide with non-strict inequalities (be epsilon stronger). Instead of using the coefficient 'a' to turn the inequality into an equality, add the slack value as a constant.
 2021-07-19 13:19:03 -07:00
Nikolaj Bjorner cab1076514 #5336 2021-07-11 21:00:58 +02:00
Nikolaj Bjorner 55daa2424c fix #5362 2021-06-22 12:26:27 -07:00
Nikolaj Bjorner c1ab7987f6 #5324 2021-06-07 11:41:35 -07:00
Lev Nachmanson 3a5b88e52b set status to CANCELLED on the total_iterations threshold bailout 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2021-06-07 07:34:16 -07:00
Nikolaj Bjorner 9afc59d5b4 #5324 2021-06-06 15:39:23 -07:00
Nikolaj Bjorner 7cd901019f #5324 2021-06-05 17:14:51 -07:00
Nikolaj Bjorner 5da4b29136 turn on parity test 2021-06-04 10:18:24 -07:00
Nikolaj Bjorner 0182187296 fix regression in arithmetic resource bound 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-06-03 11:41:42 -07:00
Nikolaj Bjorner 8a02167e30 get-universe 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-06-01 21:08:08 -07:00
Nikolaj Bjorner 3e773fba5e get-universe 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-06-01 21:07:48 -07:00
Nikolaj Bjorner 6a5cdd48e7 na 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-06-01 20:43:45 -07:00
Nikolaj Bjorner ab3b387076 na 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-06-01 20:37:43 -07:00
Nikolaj Bjorner 45adfc6a66 na 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-06-01 20:31:05 -07:00
Nikolaj Bjorner 0e6d530518 std::cout 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-06-01 18:49:37 -07:00
Nikolaj Bjorner 2156c74d51 #4702 
initial gcd test implementation for accumulated parity constraints
 2021-06-01 15:26:36 -07:00
Nikolaj Bjorner 5127014f18 track cuts 2021-06-01 15:26:36 -07:00
Nuno Lopes f1e0d5dc8a remove a hundred implicit constructors/destructors 2021-05-23 14:25:01 +01:00
Nikolaj Bjorner 8ba0fb5b58 rounding mode sort removed for incompatibility 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-05-21 16:18:43 -07:00
Nikolaj Bjorner 00deb12238 signed 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-05-21 15:51:27 -07:00
Nikolaj Bjorner ec034679ce #5215 
memory leaks
 2021-05-19 12:42:38 -07:00
Lev Nachmanson 179988e161
support recursive terms (#5246) 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2021-05-05 12:53:20 -07:00
Nikolaj Bjorner 0c6722f48b na 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-05-03 11:47:00 -07:00
Nikolaj Bjorner 60cf482cea fix #5239 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-05-03 11:44:44 -07:00
Nikolaj Bjorner 51a4db862a #5223 2021-05-02 10:40:22 -07:00
Nikolaj Bjorner 0810720267 #5223 2021-05-02 10:30:35 -07:00
Nikolaj Bjorner 22a76e4985 fix typos in comments 2021-04-26 15:15:27 -07:00