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14165 commits 40 branches 51 tags 168 MiB
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3392 commits

Author SHA1 Message Date
Nikolaj Bjorner
d0e20e44ff booyah 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-07-04 15:56:30 -07:00
Lev Nachmanson
b996bc1f02 remove cheap equalities with the table 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-07-04 09:33:45 -07:00
Murphy Berzish
e8690d28f8
z3str3: continue instead of incorrectly giving up in solve_regex_automata (#4556) 2020-07-03 17:13:27 -05:00
Nikolaj Bjorner
8d3caa00fe do as Lev does 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-07-03 13:21:43 -07:00
Nikolaj Bjorner
7802e33f37 na 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-07-03 12:22:13 -07:00
Nikolaj Bjorner
5e768c9697 move unused literals under if0 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-07-03 12:21:20 -07:00
Nikolaj Bjorner
655166b867 randomize generation of 'some value' for user sorts. #4557 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-07-01 16:34:09 -07:00
Nikolaj Bjorner
d91ca423ab enforce reference count ownership in context of mk_derivative calls. 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-07-01 13:13:17 -07:00
Nikolaj Bjorner
d75ce38016 fix #4552 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-06-30 19:14:55 -07:00
Murphy Berzish
fce1252145
Z3str3: Add consistency checks for string-integer conversion terms in model construction (#4551) 
* z3str3: check consistency of str.to_int in fixed length solver

* z3str3: add similar check for int.to_str as well

* z3str3: refactor string-integer conversion check and add post checks for model construction
 2020-06-30 11:20:44 -05:00
Federico Mora Rocha
8d16a9a034
z3str3: fix Issues 4349, 4354, and 4310 (#4529) 
* regex needs lesson; m.mk_eq not ctx.mk_eq

* when unsat core is of size 0, then do naive learning

* remove two extra comments, and correct positive regex learning

* replace magic numbers for fixed-length lessons with constants
 2020-06-24 15:46:32 -05:00
Nikolaj Bjorner
c0fbb31379 use nonse based seed for transition characters 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-06-24 12:07:37 -07:00
Murphy Berzish
b0633ecc86
Z3str3: safety checks for substr and propagate (#4528) 
* z3str3: handle str.substr arguments missing arith values in model construction safely

* z3str3: reset propagation vectors on scope pop
 2020-06-24 12:14:03 -05:00
Nikolaj Bjorner
5d36578684 some unused variables reported by Caleb 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-06-22 19:04:10 -07:00
Nikolaj Bjorner
8758baf24e perf and div/mod axioms #4532 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-06-22 14:51:58 -07:00
Lev Nachmanson
6ced6995d0 check for m.get_sort(lhs->get_owner()) == m.get_sort(rhs->get_owner()) in equality propagation 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-06-22 11:48:46 -07:00
Nikolaj Bjorner
02f34ea4b1 address some crashes reported by Caleb 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-06-20 18:35:35 -07:00
Lev Nachmanson
ffaa7d0b27 debug cheap_eqs 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-06-20 11:31:22 -07:00
Lev Nachmanson
7a2aa28644 make the tree option in cheap_eqs the default 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-06-20 11:31:22 -07:00
Nikolaj Bjorner
1204671595 fix #4534 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-06-19 14:10:49 -07:00
Nikolaj Bjorner
3b1149330d enable theory propagation of regex accept condition 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-06-17 13:42:40 -07:00
Nikolaj Bjorner
be36a8fd80 fix for SPACER models using bit2bool 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-06-16 10:45:11 -07:00
Nikolaj Bjorner
48d4d8d7af fix tracking of bounds 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-06-15 17:36:20 -07:00
Lev Nachmanson
09516d74f6 change the default for cheap eqs to table 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-06-15 13:30:45 -07:00
Nikolaj Bjorner
d09e6eccf0 re-enable proofs for qe-lite #3153 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-06-15 12:03:15 -07:00
Nikolaj Bjorner
395a304262 add optional feature to bound search within ranges 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-06-14 21:34:54 -07:00
Nikolaj Bjorner
53e49eb428 neatify 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-06-13 15:20:21 -07:00
Lev Nachmanson
23c12b75af remove a duplicate option gb==grobner 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-06-13 10:03:19 -07:00
Lev Nachmanson
06826adec3 fix the race in add_var_bound and add_def_constraint 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-06-12 22:11:11 -07:00
Lev Nachmanson
fe0e042e40 move m_fixed_var_table to lar_solver 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-06-12 22:11:11 -07:00
Lev Nachmanson
3b87cdfd0f remove the debug output 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-06-12 22:11:11 -07:00
Lev Nachmanson
67eaff4490 testing cheap equalities 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-06-12 22:11:11 -07:00
Lev Nachmanson
6c115bf896 cheap eqs 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-06-12 22:11:11 -07:00
Lev Nachmanson
94263167ec cheap eqs 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-06-12 22:11:11 -07:00
Lev Nachmanson
1587497562 cheap equalities 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-06-12 22:11:11 -07:00
Lev Nachmanson
b3bdce7837 make lp_bound_propagator a field of theory_lra::imp 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-06-12 22:11:11 -07:00
Lev Nachmanson
dd30b5e3af some simplifications in cheap eqs 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-06-12 22:11:11 -07:00
Lev Nachmanson
4de38d09e2 cheap eqs 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-06-12 22:11:11 -07:00
Lev Nachmanson
4f0bd93124 debug cheap_eqs 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-06-12 22:11:11 -07:00
Lev Nachmanson
110ab5e6ef debug cheap_eqs 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-06-12 22:11:11 -07:00
Lev Nachmanson
1e4e887221 propagate cheap eqs 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-06-12 22:11:11 -07:00
Nikolaj Bjorner
865dfe0590 own refs 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-06-12 17:07:06 -07:00
Nikolaj Bjorner
41430cd128 register unhandled expressions 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-06-12 16:12:24 -07:00
Nikolaj Bjorner
b0da5409c1 substitute into non-ground regexes 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-06-09 14:58:25 -07:00
Nikolaj Bjorner
08cc5bc2e5 na 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-06-09 11:39:26 -07:00
calebstanford-msr
1fd567d1e9
fix bug in seq rewriter op_cache::find (#4509) 
* remove unneeded reverse case in derivative; placeholder for generalized lifted derivative

* experimental tweaks to RE rewriter to improve performance

* if-then-else lifting
(broken code -- preserving this commit in case this idea is useful later)

* if-then-else derivative optimizations: new approach templates

* implement if-then-else BDD normal form for derivatives
(code compiles but is still buggy)

* remove std::cout debugging for PR

* Revert "remove std::cout debugging for PR"

This reverts commit c7bdc44d31.

* debugging

* fix derivative interaction with reverse; add flags for left/right derivative and lifting over union/intersection

* remove debugging statements for PR

* Revert "remove debugging statements for PR"

This reverts commit 38e85a7288.

* revert some purely cosmetic changes from upstream; fix a bug

* revert unnecessary changes

* remove some redundant rewrites and add a new one for str.in_re(s, comp(r))

* add disabled rewrite for complement

* fix bug in op cache find (result was not saved)

* remove debugging std::cout for PR
 2020-06-09 11:36:31 -07:00
Nikolaj Bjorner
d2a12f6db5 tuning 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-06-07 12:52:13 -07:00
Nuno Lopes
1809ee5107 fix regression in FPA internalization 2020-06-07 15:50:53 +01:00
Nikolaj Bjorner
ba1ca33637 normalization of union/intersection 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-06-06 12:54:44 -07:00
Nikolaj Bjorner
ccea27de35 add nullable propagation instead of waiting for length assignment 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-06-06 12:11:04 -07:00