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69 commits

Author SHA1 Message Date
Nikolaj Bjorner
3778048eb4 add bounded-int and pb2bv solvers to fd_solver, use sorting networks for pb2bv rewriter when applicable, hoist to pb2bv_rewriter module and remove it from the pb2bv_tactic 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2016-10-23 20:31:59 -07:00
Nikolaj Bjorner
881e82e3fa remove legacy interface to dt2bv tactic 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2016-10-18 23:04:17 -04:00
Nikolaj Bjorner
d060359f01 add fd solver for finite domain queries 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2016-10-18 22:34:34 -04:00
Nikolaj Bjorner
9e4450228e adding unit test for enumeration types 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2016-10-17 14:52:37 -04:00
Nikolaj Bjorner
e3f0aff318 address ubuntu warning and add shortcuts for maxsat 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2016-10-03 16:22:13 -07:00
Mikolas Janota
ec47a1df50 Adding bv preprocessing techniques. 2016-09-16 19:44:37 +01:00
Nikolaj Bjorner
d4539b8887 fix dt2bv transformation to only work with constants, issue #725 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2016-08-30 11:42:14 +08:00
Nikolaj Bjorner
5f5ef8b38d adding support for distinct for dt2bv, re-entry harness for ~Context 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2016-07-27 09:02:56 -07:00
Nikolaj Bjorner
a85c5f0fac add handling of recognizers to enumeration types 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2016-07-24 17:29:17 -07:00
Nikolaj Bjorner
6bf446dfc2 add tactic to eliminate enumeration sorts in favor of bit-vectors 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2016-07-23 14:13:40 -07:00
Nikolaj Bjorner
083939ab0e add tactic to eliminate enumeration sorts in favor of bit-vectors 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2016-07-23 14:11:21 -07:00
Nikolaj Bjorner
5b497b6249 reduce set of mainly verbose warnings raised by -Wmaybe-uninitialized and unused variable warnings from release mode builds 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2016-06-22 20:25:47 -07:00
Christoph M. Wintersteiger
f8795f3522 Added term ITEs to bvarray2uf rewriter. 2016-05-09 14:16:51 +01:00
Christoph M. Wintersteiger
0597b579b1 Bugfixes for bvarray2uf conversion. 2016-04-07 19:10:31 +01:00
Nikolaj Bjorner
f175f864ec merge useful utilities from qsat 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2016-03-19 12:01:44 -07:00
Nikolaj Bjorner
70f13ced33 make proto-model evaluation use model_evaluator instead of legacy evaluator 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2016-03-05 10:14:15 -08:00
Nuno Lopes
62e46aacd9 bv_bounds: make may_simplify more precise to skip exprs with just 1 bound expr 
speedups up to 3x in selected benchmarks
 2016-03-01 11:31:08 +00:00
Nikolaj Bjorner
4a15d756d7 uint64_t -> uint64 for cross platform 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2016-02-29 22:16:03 -08:00
Nuno Lopes
43202572ee bv_bounds: switch from rational to uint64 
this limits the analysis to 64-bit BVs, but gives a speedup of up to one order of magnitude
 2016-02-29 17:23:54 +00:00
Nuno Lopes
c1eb1cc3f2 bv_bounds: improve perf of push/pop 2016-02-28 20:07:39 +00:00
Nuno Lopes
e7a360ca08 ctx_simplify: remove virtual push() method 2016-02-28 17:57:40 +00:00
Nuno Lopes
51687b2be7 bv_bounds: ensure (bvule x maxuint) is simplified to true 2016-02-28 10:56:48 +00:00
Nuno Lopes
97d6098d00 bv_bounds: make may_simplify() more aggressive for the common case of a single comparison 
fix expr_has_bounds to handle cases like (bvadd (ite c t e) ...)
 2016-02-25 19:41:01 +00:00
Nuno Lopes
c693c990df bv_bounds: speedup up to 10x in larger formulas 
introduce a may_simplify() function to short-circuit evaluation of expression trees that are guaranteed to not be simplifiable
 2016-02-25 16:53:35 +00:00
Nuno Lopes
c1aa33339d bv_bounds: early exit in is_bound in case the expr is not boolean 
~2% speedup
 2016-02-25 09:32:10 +00:00
Nikolaj Bjorner
63c138c08e add option to enable equality propagation 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2016-02-21 11:16:13 -08:00
Nikolaj Bjorner
d4f41c0420 add goal context for simplifier, disable equality creation 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2016-02-20 10:13:24 -08:00
Nuno Lopes
c618838ed9 bv_bounds: fix crash in push() when realloc happened 2016-02-19 11:06:22 +00:00
Nuno Lopes
121b3b60f3 bv_bounds/ctx_simplify: improve handling of (ite x a b) where (not x) is proved to be false 2016-02-19 09:42:42 +00:00
Nuno Lopes
d32b4c71d1 [bv_bounds] introduce a tight bit in intervals to denote they are tight (over and under approx) 
use this to ensure certain transformations remain sound
 2016-02-18 15:53:11 +00:00
Nuno Lopes
8718c1c99f bv_bounds: simplify negated expressions as well 2016-02-17 19:14:02 +00:00
Nuno Lopes
a4cfcd4550 bv_bounds: fix bug in interval intersection for non-wrapping disjoint values 2016-02-17 16:32:43 +00:00
Nuno Lopes
ac20d8bc11 bv_bounds: fix intersection of wrapped intervals 
e.g., [117, 115] /\ [115, 113] -> [115, 113]
 2016-02-17 15:41:12 +00:00
Nuno Lopes
98a92b9255 bv_bounds tactic: change representation to intervals 
Code by myself and Nikolaj Bjorner
 2016-02-17 10:02:40 +00:00
Nikolaj Bjorner
d3805bbdf6 fix location of level retrieval 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2016-02-15 17:29:46 -08:00
Nikolaj Bjorner
8fc58e1ace propagate bounds implementation 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2016-02-13 02:07:41 +00:00
Nikolaj Bjorner
d7186eede8 bv bounds tactic for Nuno 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2016-02-13 00:13:16 +00:00
Nikolaj Bjorner
e484fc365d add outline of bv bounds tactic 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2016-02-12 22:57:47 +00:00
Christoph M. Wintersteiger
3f6a1eb8c5 Fix for QF_BV core theory detection. 2016-02-02 13:01:32 +00:00
Mikolas Janota
743a59254e Merge remote-tracking branch 'upstream/master' into lackr 2016-01-07 16:39:43 +00:00
Nikolaj Bjorner
8e26c97782 tuning bit-vector operations 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2015-12-21 13:09:03 +02:00
Mikolas Janota
3dbc307ecd Setting up the lackr branch. 2015-12-16 20:10:14 +00:00
Nikolaj Bjorner
a7e2fb31e3 updates to resource exceptions, update master possibly handle pull request issue 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2015-12-12 11:36:49 -08:00
Nikolaj Bjorner
2a051719d8 cleanup deprecated critical sections, fix cancellation for par_or_else tactic 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2015-12-12 09:43:00 -08:00
Nikolaj Bjorner
baee4225a7 reworking cancellation 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2015-12-11 16:21:24 -08:00
Christoph M. Wintersteiger
db2f973e3e Fixed initialization order in bvarray2uf_tactic 2015-11-27 15:34:06 +00:00
Christoph M. Wintersteiger
6aa5ec9f77 Eliminated unused variables 2015-11-23 13:12:05 +00:00
Christoph M. Wintersteiger
806016c315 build fix 2015-11-13 14:11:39 +00:00
Christoph M. Wintersteiger
643dbb874b Added tactic that translates BV arrays into BV UFs. 2015-11-12 15:27:33 +00:00
Christoph M. Wintersteiger
746689904d Added elim_small_bv_tactic. 2015-11-10 16:23:05 +00:00