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Author SHA1 Message Date
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
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
Murphy Berzish
f473b92d5c solve_concat_eq_str() case 4 WIP 2015-09-28 17:41:01 -04:00
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
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
0d54e4e4ae implement str_decl_plugin::is_value() and ::is_unique_value() 
we can now prove that (= "abc" "def") is unsatisfiable
 2015-09-27 23:57:41 -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
Murphy Berzish
992fff8ba8 set up theory of arithmetic correctly 
closes #1
 2015-09-10 18:43:14 -04:00
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
7f0d9157ac at least for now, Concat is no longer associative 
this means that we'll always have (Concat a b)
instead of variadic forms
 2015-09-06 21:47:57 -04:00
Murphy Berzish
f0c301e920 register Concat function 
now reaches str_decl_plugin::mk_func_decl()
 2015-09-06 21:05:32 -04:00
Murphy Berzish
8137e022e3 load str decl plugin; recognize String sorted constants 2015-09-06 20:53:08 -04:00
Murphy Berzish
744d2e3c9c pretty-printing of string constants in AST 
spec2 looks good now
 2015-09-03 01:12:08 -04:00
Murphy Berzish
02345ee5f1 fix string constant representation in parser 
spec1 loopback OK
 2015-09-03 00:17:05 -04:00
Murphy Berzish
e48ac4a97a create and register string theory plugin 
the parser gets a little bit further now!
rejects input with "unexpected character"
 2015-09-02 21:12:03 -04:00
Murphy Berzish
1f96e19211 failing test case: SMT2 parse string constants 2015-09-02 18:55:45 -04:00
Murphy Berzish
b30d4f757d ignore Z3-str source 2015-09-02 18:08:58 -04:00
Murphy Berzish
f39773f15b update readme 2015-08-30 15:23:31 -04:00
Nikolaj Bjorner
a7a0deed3f Merge pull request #164 from mlr-msft/master 
clarified README with information provided in issue #163.
 2015-07-16 10:40:52 -07:00
Michael Lowell Roberts
e5b702b3f1 clarified README with information provided in issue #163. 2015-07-16 10:38:17 -07:00
Christoph M. Wintersteiger
7f6ef0b6c0 Merge branch 'unstable' of https://github.com/wintersteiger/z3 into contrib 2015-04-29 15:40:46 +01:00
Christoph M. Wintersteiger
4e082eae6e Version number adjustment. 2015-04-29 15:16:25 +01:00
Christoph M. Wintersteiger
78cc1e0703 Remove temporary files created during configuration tests. 2015-04-29 15:15:57 +01:00
Christoph M. Wintersteiger
d1aef7facd Merge branch 'contrib' of https://github.com/wintersteiger/z3 2015-04-28 15:20:20 +01:00
Christoph M. Wintersteiger
1d49f61b9a Merge branch 'unstable' of https://github.com/Z3Prover/z3 into contrib 
Conflicts:
	README
	src/api/ml/build-lib.sh
	src/api/ml/z3.ml
	src/api/ml/z3.mli
	src/api/ml/z3_stubs.c
 2015-04-28 15:19:08 +01:00
Christoph M. Wintersteiger
1abeb825a3 Fixed python 3.x problems. 
Signed-off-by: Christoph M. Wintersteiger <cwinter@microsoft.com>
 2015-04-28 14:58:58 +01:00
Nikolaj Bjorner
620c11932b type check distinct operator. fixes #62 
Signed-off-by: Nikolaj Bjorner <nbjorner@hotmail.com>
 2015-04-27 11:10:37 -07:00
Nuno Lopes
f7d9438e7b add failing test for issue #62 (mk_distinct doesnt type check) 
Signed-off-by: Nuno Lopes <nlopes@MSRC-3617536.europe.corp.microsoft.com>
 2015-04-27 17:44:38 +01:00
Christoph M. Wintersteiger
abe73db702 FP: bugfix for get_some_value which couldn't produce rounding-mode values. 2015-04-25 15:19:48 +01:00
Christoph M. Wintersteiger
4768a360f8 FP: Fix for conversion functions from non-FP 0 to +0.0 even when the rounding mode is ToNegative. 2015-04-25 15:01:20 +01:00
Christoph M. Wintersteiger
b58d3f4335 Bugfix for MPF unpacking 2015-04-25 14:26:18 +01:00
Christoph M. Wintersteiger
8c3fc574d1 comments fix 2015-04-24 15:37:45 +01:00
Ken McMillan
9bff93279f merging into unstable 2015-04-20 12:31:16 -07:00