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19277 commits 50 branches 53 tags 183 MiB
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2678 commits

Author SHA1 Message Date
Nikolaj Bjorner
707577644f assignment -> assignment_t for build 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-12-09 09:33:24 -08:00
Jakob Rath
8d13446537 Solve boolean skeleton first 2022-12-09 17:22:51 +01:00
Nikolaj Bjorner
a6b49d8b4e provide access to saturation for selected constraints 2022-12-08 19:17:35 -08:00
Nikolaj Bjorner
33902c7c9e fix parity propagation code, add tail-spin unit tests. The unit tests diverge because conflict resolution removes conflicting literals from the conflict clause before the decision variable gets processed. We have to change how conflict resolution is processed for such conflict clauses 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-12-08 09:57:38 -08:00
Jakob Rath
3c8718615a yes, no need for plugins to be mutually exclusive 2022-12-08 16:19:11 +01:00
Jakob Rath
5ad961029d Rename revert_decision -> revert_pvar, and enable it. 
Also rename resolve_with_assignment to resolve_evaluated
 2022-12-08 16:19:11 +01:00
Jakob Rath
a81e05e660 We shouldn't assume that v is assigned 
Happens if it is a viable conflict for v
 2022-12-08 16:19:11 +01:00
Jakob Rath
3fe8f4a0cd minor issue about narrow with first=true 2022-12-08 16:19:11 +01:00
Jakob Rath
85818612fb val_pp 2022-12-08 16:19:11 +01:00
Nikolaj Bjorner
28fb67219e fix new (and unused) function for extracting min parity of a polynomial 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-12-08 07:13:31 -08:00
Nikolaj Bjorner
8981d32caf
#6481 2022-12-08 07:06:27 -08:00
Nikolaj Bjorner
acbd60799d add placeholder for factor equality 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-12-07 20:12:19 -08:00
Nikolaj Bjorner
437f826e8b sketch parity generalization 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-12-07 20:04:58 -08:00
Jakob Rath
55d691e16e enable 2022-12-07 18:45:00 +01:00
Jakob Rath
45e94ae7dd insert_eval 2022-12-07 18:41:42 +01:00
Clemens Eisenhofer
592791ba34 continue instead of return 2022-12-07 16:55:30 +01:00
Clemens Eisenhofer
c088eb4a26 Readded variable evaluation as fallback for variable elimination 2022-12-07 16:54:39 +01:00
Clemens Eisenhofer
47cb83f578 Merge branch 'polysat' of https://github.com/Z3Prover/z3 into polysat 2022-12-07 16:35:42 +01:00
Jakob Rath
93ee9c7f8e compile 2022-12-07 16:16:07 +01:00
Jakob Rath
71acba20e2 Assertion was too strong (via test_ineq1) 2022-12-07 16:13:24 +01:00
Jakob Rath
05a1f4d096 Skip try_parity for x==y and y==x 2022-12-07 16:09:10 +01:00
Jakob Rath
85715eb164 Update use of insert_eval and lemma scores to support propagation 2022-12-07 16:08:24 +01:00
Jakob Rath
fca4f18194 p 2022-12-07 12:47:30 +01:00
Nikolaj Bjorner
754cb540d0 disable new code paths for commit 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-12-07 02:23:43 -08:00
Nikolaj Bjorner
fdba85e39f trigger also parity constraints in linear case 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-12-06 05:18:50 -08:00
Nikolaj Bjorner
ef811a3dd8 add propagation rule for strict inequality to force univariate polynomials 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-12-06 04:56:42 -08:00
Nikolaj Bjorner
317edb2b03 add parity propagation 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-12-05 10:22:18 -08:00
Nikolaj Bjorner
f2c228f160 update function that propagates bounds on x*y = 0 to be more comprehensive 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-12-05 01:19:26 -08:00
Nikolaj Bjorner
1d440ac871 try adding unit propagation / distinguish these in saturation 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-12-04 14:22:34 -08:00
Nikolaj Bjorner
066b7d2d71 add review comments based on debugging 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-12-04 03:49:17 -08:00
Nikolaj Bjorner
db18c7206a debugging 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-12-03 17:09:36 -08:00
Nikolaj Bjorner
0a5b03194c retire omega and use overflow detection including literals 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-12-03 16:54:07 -08:00
Nikolaj Bjorner
5b8dcfb801 wip - adding saturation/propagations 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-12-03 15:38:01 -08:00
Nikolaj Bjorner
0288704a59 add TODO marker in saturation for overflow rule 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-12-03 09:07:24 -08:00
Nikolaj Bjorner
0657cdd4a7 add TODO marker in saturation for overflow rule 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-12-03 08:38:26 -08:00
Nikolaj Bjorner
c848192962 add TODO marker in saturation for overflow rule 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-12-03 08:29:13 -08:00
Nikolaj Bjorner
9572623675 remove comment about bug in forbidden_intervals, it is correct there, but maybe a bug in viable 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-12-03 08:02:02 -08:00
Nikolaj Bjorner
eda3cac8d4 chasing interval bug 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-12-03 07:49:17 -08:00
Nikolaj Bjorner
ff22b433cc experiment 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-12-03 06:32:34 -08:00
Nikolaj Bjorner
68d9b44d67 add activate for & 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-12-03 05:55:14 -08:00
Nikolaj Bjorner
05e425e039 add todo marker for missing inference 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-12-02 20:47:22 -08:00
Nikolaj Bjorner
215a4e9bad review and fix soundness bug in band rule 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-12-02 19:04:23 -08:00
Jakob Rath
91c6582bf7 pwatch 2022-12-01 15:50:03 +01:00
Jakob Rath
57edd12e36 quot_rem note 2022-12-01 14:11:37 +01:00
Jakob Rath
bcde2844b2 misc 2022-12-01 10:05:14 +01:00
Nikolaj Bjorner
529f116be0 disable new code until pre-condition gets fixed 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-11-30 22:29:59 -08:00
Nikolaj Bjorner
cfc8e19baf add more simplifiers, fix model reconstruction order for elim_unconstrained 
- enable sat.smt in smt_tactic that
is invoked by default on first goals
add flatten-clauses
add push-ite
have tptp5 front-end pretty print SMT2 formulas a little nicer.
 2022-12-01 02:35:43 +09:00
Jakob Rath
fb1178dea3 Additional band lemmas (solves bench11) 2022-11-30 17:05:13 +01:00
Jakob Rath
ea9e5a47c7 -1 2022-11-30 15:24:35 +01:00
Jakob Rath
7712068034 Remove old code 
backjump_and_learn, learn_lemma
 2022-11-30 15:14:25 +01:00