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13963 commits 23 branches 48 tags 157 MiB
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2060 commits

Author SHA1 Message Date
Nikolaj Bjorner 084cd335eb add (disabled) stubs for decomposing re-membership on regex 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-05-31 12:25:21 -07:00
Nikolaj Bjorner 7f7663a3b4 fix #4478 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-05-31 11:16:21 -07:00
Nikolaj Bjorner c92a63690d enable parsing (_ char ..) 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-05-29 17:47:24 -07:00
Nikolaj Bjorner d41ecda03e skip non-overlap simplification in rewriter 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-05-29 17:27:54 -07:00
Nikolaj Bjorner e68c72755a fix leak 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-05-29 14:49:53 -07:00
Nikolaj Bjorner f381d51c83 update badge 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-05-29 14:04:12 -07:00
calebstanford-msr c939195c10
add regex support for reverse and left/right derivative rewriting (#4477) 
* partial work on adding 'reverse' (broken code)

* new op codes for derivative and reverse + associated rewrite rules

* incorporate reverses and derivatives in rewriter + some fixes

* enable rewriting str.in_re constraints with right derivative
 2020-05-29 13:00:37 -07:00
Nikolaj Bjorner 3d9d52f742 add detection of string equalities 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-05-29 10:40:47 -07:00
Nikolaj Bjorner e0130f5cf4 remove Kleene naming as it is a misnomer in this context 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-05-28 20:41:03 -07:00
Nikolaj Bjorner 0911a06d81 bounds 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-05-28 20:05:32 -07:00
Nikolaj Bjorner ea1f50b77e simplify extended contains patterns 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-05-28 19:11:29 -07:00
Nikolaj Bjorner 6a90072a98 bug in non-member disjunction 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-05-28 12:03:40 -07:00
Nikolaj Bjorner 90708576fe from #4468 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-05-27 14:04:30 -07:00
Nikolaj Bjorner 87f8da022e fix non-empty -> empty typo 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-05-27 12:13:25 -07:00
Nikolaj Bjorner dbd90e5f86 dbg proagate_eq 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-05-27 10:33:45 -07:00
Nikolaj Bjorner 9dd8ebb474 fix build 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-05-27 10:10:25 -07:00
Nikolaj Bjorner 94ffd63b51 change to iterative unfolding left build broken for some time 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-05-26 21:25:53 -07:00
Nikolaj Bjorner 88e36c6bf3 add general purpose emptiness/non-emptiness check 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-05-26 20:42:21 -07:00
Nikolaj Bjorner a97bc65af4 hoist co-factors eagerly without adding axioms 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-05-25 15:10:45 -07:00
Nikolaj Bjorner e938ee33bb na 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-05-25 14:11:59 -07:00
Nikolaj Bjorner 4e01d5b5c1 tune axioms for derivatives 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-05-25 14:11:59 -07:00
Nikolaj Bjorner eb3f20832e initial pass at using derivatives in regex unfolding 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-05-23 11:53:07 -07:00
Nikolaj Bjorner d1d14111cb turn on Unicode parsing when they fit in 8 bits 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-05-22 10:41:19 -07:00
Nikolaj Bjorner 9eedd4ecd6 gate mk_bool_app by existence of regex 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-05-22 10:09:16 -07:00
Nikolaj Bjorner 82fb7573d7 more rewrites for emptiness 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-05-22 09:56:21 -07:00
Margus Veanes 5d6be3f17f
adding regex simplification rewriter (#4440) 2020-05-22 09:55:29 -07:00
Nikolaj Bjorner 18bb90f93d fix #4426 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-05-21 21:27:26 -07:00
Nikolaj Bjorner 9da0b61d30 na 2020-05-21 21:04:48 -07:00
Nikolaj Bjorner 6381cfdc05 remove old functionality 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-05-19 16:34:21 -07:00
Nikolaj Bjorner 209f6a9e2e regression free behavior 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-05-19 16:21:19 -07:00
Nikolaj Bjorner 287bccde30 disable new incomplete functionality for master 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-05-19 15:56:57 -07:00
Nikolaj Bjorner 7756e2c6d5
in progress (#4386) 
* initial work on replacing str in regex check

* finish rewriter for empty string in regex

* remove unnecessary argument in mk_regexp_contains_emptystr; initial template for eval_regexp_derivative

* progress on string in regexp general check using derivatives

* added recursive nullable and derivative funcitons, partially working

* remove tests from z3test

* fix rewriting infinite loop and some failing simplify checks

* several fixes addressing comments for z3 main branch PR #4386

* redo derivative to return an expr_ref, and null on failure

Co-authored-by: calebstanford-msr <t-casta@microsoft.com>
 2020-05-19 15:55:19 -07:00
Nikolaj Bjorner fca44ff3f2 fix #4394 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-05-19 13:40:03 -07:00
Nikolaj Bjorner 5fe0eeda63 disable regressions in ST mode 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-05-19 09:37:06 -07:00
Nikolaj Bjorner 0f8f886389 use single return pattern 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-05-18 20:27:50 -07:00
Nikolaj Bjorner bc03ffb800 typing error 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-05-18 20:19:33 -07:00
Nikolaj Bjorner d26ef08c69 na 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-05-18 19:41:37 -07:00
Nikolaj Bjorner ff34d84b35 ranges are never nullable 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-05-18 19:41:04 -07:00
Nikolaj Bjorner 6e55880601 constant folding 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-05-18 19:38:21 -07:00
Nikolaj Bjorner 5bbf05c93c kleene 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-05-18 19:35:31 -07:00
Nikolaj Bjorner 10edee48f3 na 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-05-18 19:11:59 -07:00
Nikolaj Bjorner 9d6c870e97 remove case with hi = 0 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-05-18 19:11:35 -07:00
Nikolaj Bjorner f8d328b1fb add nullable, get-head-tail with Caleb 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-05-18 19:10:00 -07:00
Nikolaj Bjorner 5844964d95 rename temporary macro 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-05-18 17:17:51 -07:00
Nikolaj Bjorner c8c02060ee another module level ifdef for #4382 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-05-18 15:01:27 -07:00
Murphy Berzish 1c760b04cf
re.range with non-unit arguments is the empty language (#4360) 2020-05-17 19:08:50 -07:00
Murphy Berzish 152d6338f8
fix hex digit radix in unicode escape (#4356) 2020-05-17 19:07:51 -07:00
Nikolaj Bjorner 1def58bc9f optional unicode mode 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-05-17 19:06:34 -07:00
Nikolaj Bjorner 30f17b1509 fix #4355 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-05-17 12:28:30 -07:00
Nikolaj Bjorner fc8dfe3e40 seq 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-05-17 05:35:32 -07:00