mirrors/z3
3
0
Fork 0
mirror of https://github.com/Z3Prover/z3 synced 2025-04-13 20:38:43 +00:00
Code Activity
15976 commits 23 branches 48 tags 157 MiB
Commit graph

337 commits

Author SHA1 Message Date
Margus Veanes 1d9aad6ea9
improved regex merging avoiding unsat nontermination (#5728) 2021-12-20 17:44:06 -08:00
Margus Veanes be38b256c8
fixed bug in is_char_const_range (#5724) 2021-12-19 17:46:42 -08:00
Margus Veanes 25d54ebb40
fixing regression of issue 1224 (#5723) 2021-12-19 14:07:53 -08:00
Margus Veanes a7b1db611c
State graph dgml update and fixes in condition simplifier (#5721) 
* improved generated dgml graph

* fixed simplification of negated ranges and did some code cleanup

* do not make loops with lower=upper=0, this is epsilon

* do not add loops with lower=upper=1

* bug fix in normalization: forgotten eps case
 2021-12-19 11:09:55 -08:00
Nikolaj Bjorner e1ffaa7faf na 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-12-17 11:34:57 -08:00
Nikolaj Bjorner 6963451704 na 2021-12-16 20:13:29 -08:00
Nikolaj Bjorner 5974200444 fixes to previous push and streamlining 2021-12-16 20:06:49 -08:00
Nikolaj Bjorner 4e82a9af5f pin expressions 2021-12-16 19:41:32 -08:00
Margus Veanes a288f9048a
Update regex union and intersection to maintain ANF (#5717) 
* added merge for unions and intersections

* added normalization rules to ensure ANF

* fixing PR comments related to merge
 2021-12-16 19:19:36 -08:00
Margus Veanes 2be93870c8
Cleanup regex info and some fixes in Derivative code (#5709) 
* removed unused regex info fields

* cleanup of info and fixes in antimirov derivatives

* removed extra qualification on operator
 2021-12-15 10:59:34 -08:00
Nikolaj Bjorner 51fa40ece5 fix spelling 2021-12-09 10:23:37 -08:00
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
Margus Veanes f78546cd7c
fixed bug of computing butlast of a sequence (#5602) 2021-10-15 18:02:51 -07:00
Margus Veanes cb120c93f4
Regex range bug fix (#5601) 
* added a missing derivative case for nonground range

* further missing cases and a bug fix in re.to_str
 2021-10-15 15:30:55 -07:00
Nikolaj Bjorner 9a76bf0aa2 #5591 
nth issue
 2021-10-12 13:59:28 -07:00
Margus Veanes 146f4621c5
Updated regex derivative engine (#5567) 
* updated derivative engine

* some edit

* further improvements in derivative code

* more deriv code edits and re::to_str update

* optimized mk_deriv_accept

* fixed PR comments

* small syntax fix

* updated some simplifications

* bugfix:forgot to_re before reverse

* fixed PR comments

* more PR comment fixes

* more PR comment fixes

* forgot to delete

* deleting unused definition

* fixes

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* fixes

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

Co-authored-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-10-08 13:04:49 -07:00
Margus Veanes 22bb4c2db7
more fixes related to issue #5140 (#5466) 
* instead of u in to_re(s) make u = s

* bug fix: added missing emptiness check
 2021-08-09 17:48:35 -07:00
Nikolaj Bjorner 3eb849ad9e rewrite equality too 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-08-09 15:32:04 -07:00
Nikolaj Bjorner aa7e9b09f3 fix equality rewrite with itos 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-08-09 14:22:48 -07:00
Margus Veanes 225204e2f4
updates related to issue #5140 (#5463) 
* updates related to issue #5140

* updated/simplified some cases

* fixing feedback comments

* fixed comments and added missing case for get_re_head_tail_reversed

* two bug fixes and some other code improvements
 2021-08-09 10:48:56 -07:00
Nikolaj Bjorner 1173c93150 #5140 2021-08-02 17:13:47 -07:00
Nikolaj Bjorner 5652d2a157 #5429 #5431 2021-07-25 11:59:42 -07:00
Nikolaj Bjorner b638405e42 simplify #5431 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-07-25 09:57:38 -07:00
Margus Veanes 4fd1e6d32c
added derivative support for (str.to_re (str.from_int ...)) (#5431) 2021-07-25 09:51:48 -07:00
Margus Veanes a19910c13d
added regex simplification rules ~() = .+ and .+* = .* (#5416) 2021-07-18 12:09:19 +02:00
CEisenhofer 0fa4b63d26
Added sbv2s (#5413) 
* Added sbv2s

* Fixed indention

Co-authored-by: Clemens Eisenhofer <Clemens.Eisenhofer@tuwien.ac.at>
 2021-07-16 17:58:28 +02:00
Nikolaj Bjorner 9e5dcf3ecb bound length of ubv2s 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-07-16 16:17:59 +02:00
Margus Veanes 8e9bc86c23
fixed bug #5343 and did some related optimizations (#5411) 2021-07-15 22:28:59 +02:00
Nikolaj Bjorner f74adb1ebd ubv2s step3 2021-07-12 17:15:08 +02:00
Nikolaj Bjorner 1bc10cebc5 add ubv2s step 1 2021-07-12 12:53:00 +02:00
Nikolaj Bjorner 0f8d2d1d51 fix #5399 2021-07-10 14:47:51 +02:00
Nikolaj Bjorner 92ec81d108 #5140 
@veanes
mk_bool_app_helper has a bug:
When it simplifies a disjunction or conjunction of regex membership constraints of the form (and (str.in_re "" R) (str.in_re x Q))
then the first term (str.in_re "" R) is omitted in the result.
You have a test here
3da9d91866/src/ast/rewriter/seq_rewriter.cpp (L438)
that means a regex membership with empty first argument is not put in the two buffers with membership/non-membership.
It isn't put into new_args either because the test bypasses these
3da9d91866/src/ast/rewriter/seq_rewriter.cpp (L485)
 2021-06-06 20:30:09 -07:00
Nikolaj Bjorner 20a67e47ca remove symbol -> zstring -> symbol round-trips 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-05-22 13:12:49 -07:00
Nikolaj Bjorner e14e3ef291 #5140 2021-05-22 10:27:53 -07:00
Nikolaj Bjorner 4a6083836a call it data instead of c_ptr for approaching C++11 std::vector convention. 2021-04-13 18:17:35 -07:00
Nikolaj Bjorner ff1b35663b revert rewriting of OP_LE, OP_GE as it breaks axioms 2021-04-12 09:32:03 -07:00
Nikolaj Bjorner 804f065215 fixes for #4688 
https://github.com/Z3Prover/z3/issues/4866#issuecomment-778721073
 2021-04-11 17:42:12 -07:00
Nikolaj Bjorner f607c15aa2 more rewrites for loop #4373 2021-04-10 11:15:59 -07:00
Nikolaj Bjorner 1b503b8887 na 2021-04-06 20:09:51 -07:00
Nuno Lopes c47ab023e5 remove a few trivial destructors so they get inlined 2021-04-04 17:13:59 +01:00
Nikolaj Bjorner 1fcd537d81 fix #5117 2021-03-30 14:23:30 -07:00
Nikolaj Bjorner 5cc29bec14 simplify ""* to "" 2021-03-29 14:18:57 -07:00
Nikolaj Bjorner 6d28b1a858 fix #5134 2021-03-29 14:11:49 -07:00
Nikolaj Bjorner 9c716a2788 fix #5108 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-03-16 07:37:06 -07:00
Nikolaj Bjorner e83f31949e fix #5074, add rewrite rules to simplify indexof special cases 2021-03-06 12:36:19 -08:00
Nikolaj Bjorner 847724fb21 added rewrite for itos 2021-03-04 10:47:47 -08:00
Nikolaj Bjorner cf3002c293 fix #5071 2021-03-03 23:13:56 -08:00
Nikolaj Bjorner 11efe33aa0 fix #5061 2021-03-03 11:19:03 -08:00
Nikolaj Bjorner 04edfc9fdb out 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-02-23 18:14:20 -08:00
Nikolaj Bjorner 377d060036 move to separate axiom management 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-02-23 18:09:45 -08:00