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7409 commits 28 branches 52 tags 171 MiB
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1614 commits

Author SHA1 Message Date
Murphy Berzish
ed7b343822 detect and process concat eq type 1 (WIP UNTESTED) 2015-09-30 05:15:14 -04:00
Murphy Berzish
a62d15403e start simplify_concat_eq(), WIP but some cases OK 
also fix model generation for concats and nested concats
 2015-09-29 22:31:11 -04:00
Murphy Berzish
1cdfe159b8 simplify_concat_equality() and easy cases there 
still WIP especially wrt. model generation but what's here does work
 2015-09-29 20:19:43 -04:00
Nikolaj Bjorner
5d71190468 add catch for cancellation intermixed with return value l_true. To address regressions in QF_LIA tests 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2015-09-29 16:50:59 -07:00
Murphy Berzish
8ed86d2f19 add concatenation axiom 2015-09-29 18:02:05 -04:00
Murphy Berzish
191c50b529 fix solve_concat_eq_str() case 4: prefixStr should have been suffixStr 2015-09-29 17:52:19 -04:00
Murphy Berzish
2320b6dc48 solve_concat_eq_str() case 4: somewhat working 
something's wrong but it may be very simple to fix
 2015-09-29 17:46:51 -04:00
Nikolaj Bjorner
77c423b9aa annotate enode hash as signed character to address issue #210 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2015-09-29 14:14:29 -07:00
Murphy Berzish
f473b92d5c solve_concat_eq_str() case 4 WIP 2015-09-28 17:41:01 -04:00
Nikolaj Bjorner
9b3e242990 adding rlimit resource limit facility to provide platform and architecture independent method for canceling activities 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2015-09-28 13:37:59 -07:00
Murphy Berzish
871b08bd8c solve_concat_eq_str() case 3 2015-09-28 14:52:43 -04:00
Murphy Berzish
876af399e3 probably fix duplication of mk_string() terms 
also implement Case 2 of solve_concat_eq_str()
 2015-09-28 14:44:25 -04:00
Christoph M. Wintersteiger
ac7e8b352f Improved support for UFs in FPA theory 2015-09-28 18:20:45 +01:00
Murphy Berzish
9bc685b21d solve_concat_eq_str() for concat(const,const) == const 2015-09-28 10:43:34 -04:00
Murphy Berzish
62cd633b63 create helper function theory_str::assert_implication() 2015-09-28 03:26:46 -04:00
Murphy Berzish
bccadedfee instead of building axiom (=> x y), build (or (not x) y) 
this may be a bug in Z3 as it suggests that implications are ignored
e.g. I can assert the axiom (=> true false) and Z3 is okay with this
 2015-09-28 03:20:13 -04:00
Murphy Berzish
5fe129b571 use mk_ismt2_pp() instead of mk_bounded_pp() 2015-09-28 02:09:35 -04:00
Murphy Berzish
87b5765e3d clean up traces and make them much easier to read 2015-09-28 02:04:35 -04:00
Murphy Berzish
7da3854a8b really lousy model-building, WIP 2015-09-28 01:56:13 -04:00
Murphy Berzish
02cb329ca5 defer equalities uncovered during init_search 2015-09-27 23:24:41 -04:00
Murphy Berzish
86e6087718 starting solve_concat_eq_str(); currently there is an unsoundness bug 2015-09-27 21:30:45 -04:00
Murphy Berzish
6481fe941a instantiate string-eq length-eq axiom 2015-09-27 17:48:53 -04:00
Murphy Berzish
114b51dec8 only handle equalities in assignments during init_search_eh 2015-09-27 17:26:52 -04:00
Murphy Berzish
91e9cf272a assert string axiom 2 2015-09-27 00:12:04 -04:00
Murphy Berzish
4085db9990 recursive descent through all assertions to discover all String terms 
set up axioms on these terms to be asserted during propagation
 2015-09-26 23:35:23 -04:00
Murphy Berzish
f6affe64d0 deferred addition of basic string axioms 
no longer crashes the solver and got our first correct UNSAT!
 2015-09-26 21:02:56 -04:00
Murphy Berzish
4d5a0ea53f WIP add axioms 2015-09-26 18:51:02 -04:00
Christoph M. Wintersteiger
076e680433 Improved UF suppport in fpa2bv_converter. 2015-09-25 17:28:31 +01:00
Christoph M. Wintersteiger
05d9e188f8 Reactivated smt.max_conflicts option. 
Partially fixes #216.
 2015-09-17 14:08:04 +01:00
Christoph M. Wintersteiger
f3441c6a9b tabs and indentation 2015-09-17 13:25:22 +01:00
Nuno Lopes
45cfb80d14 tentatively fix another issue with char signedness as reported in issue #210 
Signed-off-by: Nuno Lopes <nlopes@microsoft.com>
 2015-09-10 09:01:44 +01:00
Nikolaj Bjorner
d7da64f946 fix crash with incorrect bound computation 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2015-09-08 16:27:57 -07:00
Nikolaj Bjorner
73a8f9960f fix regressions exposed in Internal 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2015-09-07 20:17:46 -07:00
Murphy Berzish
799fd07c85 optimization: return integer consts for strlen() over constant strings 2015-09-07 19:51:52 -04:00
Murphy Berzish
9b04f1570f instantiate length axiom for concatenation 2015-09-07 19:40:25 -04:00
Murphy Berzish
dc86385e7f add Length function to theory of strings 2015-09-07 16:13:48 -04:00
Murphy Berzish
8137e022e3 load str decl plugin; recognize String sorted constants 2015-09-06 20:53:08 -04:00
Nikolaj Bjorner
963981b3a6 fix memory alias bug and non-termination bug exposed by issue #184 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2015-08-31 14:45:10 -07:00
Nikolaj Bjorner
0ed38ed59b add option for using corr set and use partial cores 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2015-08-30 14:48:24 -07:00
Nikolaj Bjorner
7f219e84de check cancellation flag in min/max. Fixes issue #206 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2015-08-29 15:51:58 -07:00
Christoph M. Wintersteiger
f4c8463619 Bugfix for FP theory 
Fixes #207
 2015-08-28 15:41:03 +01:00
Christoph M. Wintersteiger
81eecafa66 Merge branch 'unstable' of https://github.com/Z3Prover/z3 into unstable 2015-08-27 18:17:38 +01:00
Christoph M. Wintersteiger
081ba9093a Bugfix for FP theory; handling of UFs and interpreted functions from other theories. 2015-08-27 18:17:26 +01:00
Nikolaj Bjorner
d00d6a3506 enable Boolean propagation in AUFBV to fix inefficiency (bit-blasting destroys simplifications that are possible by simple Boolean propagation). Fixes issue #194 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2015-08-25 13:21:33 -07:00
Nikolaj Bjorner
68b441770e Merge branch 'unstable' of https://github.com/Z3Prover/z3 into unstable 2015-08-25 11:09:35 -07:00
Nikolaj Bjorner
7639eff29b retain default configuration between calls to SMT tactic so that values are not overwritten between calls to smt-setup. Fixes bug #196 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2015-08-25 11:09:10 -07:00
Nikolaj Bjorner
ee5f1ad6b6 fix issue #203: domain range was one too large 
Signed-off-by: unknown <nbjorner@nikolaj-z.redmond.corp.microsoft.com>
 2015-08-24 15:55:40 -07:00
Christoph M. Wintersteiger
8c11299be6 Bugfix for theory_fpa, when datatypes contain floats. 
Fixes #201.
 2015-08-24 15:09:02 +01:00
Nikolaj Bjorner
655b44c07b make :weight understand both decimal and integral values, remove dweight, remove deprecated commands for optimization 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2015-08-15 00:48:22 +02:00
Nikolaj Bjorner
cd838e5cf4 fix bug reported in issue #193: MBQI needs to avoid instantiating data-types that contain model values in nested positions 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2015-08-13 14:29:48 +02:00