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1090 commits

Author SHA1 Message Date
Nuno Lopes 4a3d63f9e4 NNF: dont allocate act_cache separately 2021-02-21 16:34:28 +00:00
Nuno Lopes e773e1e78d fix a few more warnings 2021-02-19 12:16:05 +00:00
Nuno Lopes d6ce9cce95 fix clang warnings 2021-02-19 10:59:22 +00:00
Nuno Lopes 5e034e495f fix compiler warnings 2021-02-19 10:33:41 +00:00
Nikolaj Bjorner 00dab30ea0 remove binary_function 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-02-18 13:18:58 -08:00
Nikolaj Bjorner a152bb1e80 remove template Context dependency in every trail object 2021-02-08 15:41:57 -08:00
Nikolaj Bjorner 0ec567fe15 integrate v2 of lns 2021-02-04 15:47:40 -08:00
Nikolaj Bjorner fb1509d011 expose internal API for set_phase 2021-02-02 14:29:06 -08:00
Nikolaj Bjorner 8f577d3943 remove ast_manager get_sort method entirely 2021-02-02 13:57:01 -08:00
Nikolaj Bjorner 3ae4c6e9de refactor get_sort 2021-02-02 04:45:54 -08:00
Nikolaj Bjorner 4455f6caf8 move to get_sort as method, add opt_lns pass, disable xor simplification unless configured, fix perf bug in model converter update trail 2021-02-02 03:58:19 -08:00
Nikolaj Bjorner 22b0c3aa70 add priority queue to instantiation 2021-01-31 16:17:36 -08:00
Nikolaj Bjorner 8521d2caaa check engine configuration for unsupported engines #4898 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-12-18 14:38:42 -08:00
Nikolaj Bjorner f71204c222 fix #4879 2020-12-12 13:37:25 -08:00
Nikolaj Bjorner 8cb30d0505 na 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-12-12 12:21:34 -08:00
Nikolaj Bjorner 89fb55a864 fix #4890 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-12-12 12:20:53 -08:00
Nikolaj Bjorner 43ddb08332 fix #4874 2020-12-08 12:08:07 -08:00
Nikolaj Bjorner 430b4ea252 fix #4870 2020-12-07 17:52:56 -08:00
Nikolaj Bjorner 27dac3e1a0 fix #4844 2020-12-07 05:54:50 -08:00
Nikolaj Bjorner 2f756da294
adding dt-solver (#4739) 
* adding dt-solver

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

* dt

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

* move mbp to self-contained module

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

* files

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

* Create CMakeLists.txt

* dt

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

* rename to bool_var2expr to indicate type class

* mbp

* na
 2020-10-18 15:28:21 -07:00
Nikolaj Bjorner 367e5fdd52
delay internalize (#4714) 
* adding array solver

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

* use default in model construction

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

* debug delay internalization

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

* bv

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

* arrays

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

* get rid of implied values and bounds

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

* redo egraph

* remove out

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

* remove files

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-09-28 19:24:16 -07:00
Nikolaj Bjorner 6f63f8761c
optimizations to bv-solver and euf-egraph (#4698) 
* additional bit-vector propagators

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

* rename restrict (not a keyword, but well) #4694, tune euf

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

* merge

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

* add pb rewriting to pb2bv #4697

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-09-20 06:47:27 -07:00
Nikolaj Bjorner 796e2fd9eb
arrays (#4684) 
* arrays

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

* arrays

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

* na

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

* arrays

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

* na

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

* fill

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

* update drat and fix euf bugs

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

* na

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

* na

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

* na

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

* const qualifiers

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

* na

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

* reorg ba

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

* reorg

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

* build warnings

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-09-13 19:29:59 -07:00
Nikolaj Bjorner cfa7c733db
fixing #4670 (#4682) 
* fixing #4670

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

* init

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

* arrays

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

* arrays

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

* arrays

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

* na

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-09-10 04:35:11 -07:00
Nikolaj Bjorner 59d8895d15 add accessors for implied values to API 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-07-28 19:46:39 -07:00
Nikolaj Bjorner 00491148f0 string 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-07-20 10:22:57 -07:00
Nuno Lopes bb26f219fe remove unneeded constructors (last round) 2020-07-12 17:41:57 +01:00
Nuno Lopes 23e6adcad3 fix a couple hundred deref-after-free bugs due to .c_str() on a temporary string 2020-07-11 20:24:45 +01:00
Nikolaj Bjorner d0e20e44ff booyah 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-07-04 15:56:30 -07:00
Arie Gurfinkel 07a1aea689 fix(spacer): bug in assign_bounds to Farkas conversion 
The fix is to remove a hack that used a theory rewriter to simplify
the conversion. Now the conversion happens less often than possible.
Will need more thinking to fix properly.

The unsoundness at this point would cause SPACER to generate lemmas
that do not block a proof obligation and then get stuck in an infinite loop
blocking and generating the same lemma.
 2020-06-18 21:19:53 -04:00
Nikolaj Bjorner f999c14a1e close #4429 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-06-04 01:33:28 -07:00
Nikolaj Bjorner 743573aac5 fix #4447, or mask it 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-06-03 19:32:05 -07:00
Nikolaj Bjorner af90992858 fix #4404 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-06-03 17:01:36 -07:00
Nikolaj Bjorner f986ae97bd fix build 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-06-03 15:12:08 -07:00
Nikolaj Bjorner 3a7df2c6ef fix various nullability checks in seq_regex 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-06-03 12:28:32 -07:00
Nikolaj Bjorner 38176256c4 fix #4434 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-06-03 10:12:49 -07:00
Nikolaj Bjorner 6e47499e26 fix #4434 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-06-03 10:09:18 -07:00
Andrew V. Jones a23ca1792b
Ensure that Z3 uses the correct SMT-LIB2 syntax for push and pop (#4495) 
* When pretty-printing SMTLIB2, ensure that Z3 uses the correct syntax for 'push'

Signed-off-by: Andrew V. Jones <andrew.jones@vector.com>

* When pretty-printing SMTLIB2, ensure that Z3 uses the correct syntax for 'pop'

Signed-off-by: Andrew V. Jones <andrew.jones@vector.com>
 2020-06-03 09:35:14 -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
Hari Govind V K b7d7ff38cb
bug fix. Handle unknown without model (#4443) 2020-05-22 10:12:42 -07:00
Hari Govind V K ed92b8437c
fix #4054 (#4277) 
* flag when quantified lemmas are added to smt_context

* When solver returns unknown but cannot create child, return unknown

* handle unknowns when qlemmas and weak_abs are turned on
 2020-05-21 09:58:09 -07:00
Nikolaj Bjorner 09d881cce5 na 2020-05-02 15:54:12 -07:00
Nikolaj Bjorner 75859ef4e4 model anomaly fix #4171 2020-05-02 15:53:46 -07:00
Nikolaj Bjorner 397bf2dec6 move windows dependencies down 2020-04-30 19:31:11 -07:00
Hari Govind V K dbfa3dd7f1
[spacer] implement spacer::is_clause() (#4170) 
Spacer has a different defintion of is_clause() than ast_util.
It is currently only used in assertions.

Main difference:
  x=y
where x and y are Bool atoms is considered to be an atom, so that
(or (= x y) (not (= z y)))
is a literal

Co-authored-by: Arie Gurfinkel <arie.gurfinkel@uwaterloo.ca>
 2020-04-30 14:03:48 -07:00
Nikolaj Bjorner e67112f289 NYI control paths 2020-04-28 20:19:20 -07:00
Nikolaj Bjorner a0de244487 pleay nice with alignment 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-04-26 23:29:42 -07:00
Nikolaj Bjorner a884201d62 remove using insert_if_not_there2 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-04-25 15:08:51 -07:00
Nikolaj Bjorner caa5b09046 fix #4050 - have to delay model compression because it may use internal symbols that have to be transformed. model compression is used prior to displaying certificate 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-04-22 13:33:36 -07:00
Nikolaj Bjorner eded7d023d fix #4006 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-04-19 16:00:03 -07:00
Nikolaj Bjorner dd3e574f81 fix #3983 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-04-16 14:03:06 -07:00
Nikolaj Bjorner f67077b7ff warnings 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-04-15 17:13:02 -07:00
Nikolaj Bjorner 7ed9996fc0 fix #3962 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-04-14 11:05:05 -07:00
Nikolaj Bjorner 299a6f4aee fix #3939 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-04-13 14:00:21 -07:00
Nikolaj Bjorner d3db2af81d fix #3941 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-04-13 13:15:15 -07:00
Nikolaj Bjorner 97af74d8cb fix #3917 remove non-native mode for recfun 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-04-11 14:19:26 -07:00
Lev Nachmanson ec0cd644f1 fix the build 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-04-11 12:28:54 -07:00
Arie Gurfinkel 20d72e5d97 (spacer) fix (get-proof) to return proper refutations 2020-04-11 14:38:27 -04:00
Arie Gurfinkel 1f6815213d spacer: fail with exception on quantifiers in recursive rules 2020-04-11 14:16:47 -04:00
Arie Gurfinkel 1e96570365 fix #3915 2020-04-11 14:16:29 -04:00
Arie Gurfinkel f821ee38e5 Fix #3907 
Protect spacer from existential quantifiers in the tail.

Some transformations seem to introduce existentially quantified terms.
 2020-04-11 11:21:13 -04:00
Arie Gurfinkel 337c07a44c Fix #3788 by converting assert into a throw 2020-04-11 09:15:32 -04:00
Arie Gurfinkel ae5a713e81 fix #3906 by fixing a regression from today 2020-04-11 00:18:25 -04:00
Arie Gurfinkel 136b0b23ce address #3905 2020-04-11 00:03:13 -04:00
Arie Gurfinkel d53e30ecbe finished fix for #3849 by converting assert into trace 2020-04-10 21:10:39 -04:00
Arie Gurfinkel fa900c39ab hide fp.xform.scale 2020-04-10 15:46:59 -04:00
Arie Gurfinkel a261bd94ed silence #3788 
better proof generation for the case when the query is reachable from initial
states. This case needs to be handled better so that spacer can assume
the problem is non-trivial.
 2020-04-10 15:21:47 -04:00
Arie Gurfinkel b1b77e57e1 (partial) fix #3788 
Fixes a bug in computation of implicants inside spacer.
The instance now returns `unknown`. The root cause is the difference in what
proofs are in spacer and SMT. Spacer returns a proof of query, but horn_tactic
expects a proof of FALSE.
 2020-04-10 12:26:31 -04:00
Arie Gurfinkel 44302f3f2a fix #3646 2020-04-10 10:01:14 -04:00
Nikolaj Bjorner 1fce2905ec fix #3832 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-04-09 19:38:08 -07:00
Nikolaj Bjorner c4b52edb29 add back assertion for #3849 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-04-09 18:08:40 -07:00
Nikolaj Bjorner 4651bffafc fix #3831 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-04-09 17:45:05 -07:00
Nikolaj Bjorner 76ac9917c8 fix #3890 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-04-09 13:12:37 -07:00
Nikolaj Bjorner cc794a19bc more on #3858 elim_term_ite 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-04-09 10:31:34 -07:00
Nikolaj Bjorner 99c328b6ef more fixes for #3858 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-04-09 09:52:15 -07:00
Nikolaj Bjorner 8cf5a7525b fix #3858 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-04-09 09:22:02 -07:00
Nikolaj Bjorner 2673807a7f fix #3863 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-04-08 18:34:15 -07:00
Nikolaj Bjorner 9f1a2e2c94 fix #3872 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-04-08 17:12:14 -07:00
Nikolaj Bjorner db3d6d7c95 fix #3879 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-04-08 17:05:29 -07:00
Nikolaj Bjorner 6e8d9001dc fix #3843 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-04-08 11:08:45 -07:00
Nikolaj Bjorner 40aa2f7cb2 fix 3838 fix #3837 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-04-08 05:49:24 -07:00
Nikolaj Bjorner 7595371721 fix #3834 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-04-08 04:56:15 -07:00
Nikolaj Bjorner dde0c9bd0d fix #3833 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-04-08 04:34:36 -07:00
Nikolaj Bjorner bd59fceaec na 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-04-08 03:48:38 -07:00
Nikolaj Bjorner 7722bf1a55 declutter spacer_manager 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-04-08 03:35:58 -07:00
Nikolaj Bjorner 8e6bb30c82 cleanup bit2bool from models #3847 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-04-08 03:06:01 -07:00
Nikolaj Bjorner 0e78f092b5 fix #3849 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-04-07 19:28:02 -07:00
Nikolaj Bjorner 7fc9eb11db fix #3850 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-04-07 19:22:50 -07:00
Nikolaj Bjorner 6e7e53e25c block selected configurations from HORN tactic 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-04-07 19:14:01 -07:00
Nikolaj Bjorner 35f184a6b9 fix #3826 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-04-07 14:39:54 -07:00
Nikolaj Bjorner 6d6881c87a fix #3824 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-04-07 11:40:12 -07:00
Nikolaj Bjorner 87a2a3410c fix #3801 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-04-07 11:34:51 -07:00
Nikolaj Bjorner 889a7ad3f2 fix #3819 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-04-07 11:23:37 -07:00
Nikolaj Bjorner b66360d0b5 fix #3809 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-04-07 11:15:34 -07:00
Nikolaj Bjorner 8dac9b7b94 fix #3814 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-04-07 10:40:36 -07:00
Nikolaj Bjorner b954e0d64b fix #3799 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-04-06 19:51:59 -07:00
Nikolaj Bjorner 9bb579c5c8 fix #3814 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-04-06 19:43:32 -07:00
Nikolaj Bjorner 9c6722bea8 fix #3791 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-04-06 18:37:39 -07:00
Nikolaj Bjorner ba820223ce fix #3795 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-04-06 17:44:02 -07:00
Nikolaj Bjorner 2b929cb31e fix #3797 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-04-06 17:36:35 -07:00
Nikolaj Bjorner 4b2e5ecca0 fix #3797 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-04-06 17:36:35 -07:00
Nikolaj Bjorner 09c5de7798 fix #3811 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-04-06 17:29:07 -07:00
Nikolaj Bjorner 18b4c7e99b fix #3796 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-04-06 17:09:23 -07:00
Nikolaj Bjorner b2ba45448a fix #3798 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-04-06 17:06:17 -07:00
Nikolaj Bjorner bfb26ecc6d fix #3793 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-04-06 16:59:36 -07:00
Nikolaj Bjorner d2ec661ec6 fix #3020 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-04-06 16:42:01 -07:00
Nikolaj Bjorner 6761bf1495 fix #3822 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-04-06 16:33:00 -07:00
Nikolaj Bjorner bcbc774b79 fix #3790 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-04-06 15:18:26 -07:00
Nikolaj Bjorner 5acf4b5968 fix #3786 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-04-06 13:03:41 -07:00
Nikolaj Bjorner 07413cc928 fix #3785 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-04-06 12:56:52 -07:00
Nikolaj Bjorner dff5071598 compile 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-04-05 17:03:26 -07:00
Nikolaj Bjorner daa904c9d2 fix #3778 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-04-05 15:13:36 -07:00
Nikolaj Bjorner b79b8c9bc4 fix #3777 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-04-05 15:08:28 -07:00
Nikolaj Bjorner 406c0792f1 fix #3775 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-04-05 14:04:00 -07:00
Nikolaj Bjorner bb1119a6ca fix #3774 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-04-05 13:59:28 -07:00
Nikolaj Bjorner 550852bc62 fix #3765 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-04-05 13:49:26 -07:00
Nikolaj Bjorner e246f6649e tidy 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-04-05 13:31:48 -07:00
Nikolaj Bjorner b889b110ee bool_vector, some spacer tidy 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-04-05 12:59:04 -07:00
Nikolaj Bjorner 2ed26e8e73 fix #3762 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-04-05 12:10:02 -07:00
Nikolaj Bjorner 39ffc4ece7 fix #3759 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-04-05 11:19:23 -07:00
Nikolaj Bjorner 426e4cc75c fix #3557 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-04-03 16:37:59 -07:00
Nikolaj Bjorner 896a1b2048 fix #3679 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-04-02 15:04:56 -07:00
Arie Gurfinkel dcc8a29a05 [spacer] fix ugly bug in ground refutation generation (i.e., cex) 2020-03-31 12:39:31 -04:00
Arie Gurfinkel 2ec00cb81d Replace is_null with is_non_empty_string in spacer params 2020-03-31 11:21:05 -04:00
Arie Gurfinkel cfe96fe92e [spacer] fixedpoint.get_answer() returns ground refutation for SAT 2020-03-31 10:13:37 -04:00
Arie Gurfinkel 6180a5276d
Logging facility for spacer plus minor improvements (#3368) 
* [spacer] logging solver events

New option fp.spacer.trace_file='file.log' enables logging solving events
into a file.

These events are useful for debugging the solver, but also for visualizing
the solving process in a variety of ways

* [spacer] allow setting logic for solvers used by spacer

* [spacer] option to set arithmetic solver explicitly

* [spacer] improve of dumping solver_pool state for debugging

* fix propagate_ineqs to handle strict inequality

Co-authored-by: Nham Van Le <nv3le@precious3.eng.uwaterloo.ca>
 2020-03-16 20:31:44 -07:00
Nikolaj Bjorner 51e459d02b fix #3294 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-03-14 10:46:03 -07:00
Nikolaj Bjorner 2d0d527fe1 preserve model order to avoid clobbering regression tests 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-03-10 16:56:49 -07:00
Nikolaj Bjorner f810f25d8d fix #3004 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-02-17 19:37:47 -10:00
Nikolaj Bjorner b71595f5b1 fix #3003 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-02-14 17:51:31 -10:00
Nikolaj Bjorner 541658fe02 move to abstract symbols 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-01-10 12:14:13 -08:00
Nikolaj Bjorner cdf3c48349 clear memory on allocation to avoid msan warnings 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2019-11-29 15:50:49 -08:00
Nikolaj Bjorner 4fabaf95aa remove deprecated and bind1st and unused warnings 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2019-11-08 13:26:50 -08:00
Nikolaj Bjorner b76dee7a7a na 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2019-11-06 18:47:06 +01:00
Nikolaj Bjorner 1e0c1cefd6 add definitions for under-specified cases of arithmetic operators #2663 #2676 #2679 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2019-11-06 18:24:22 +01:00
Nikolaj Bjorner 6cf7d8e523 adding div0 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2019-11-06 11:23:19 +01:00
Christoph M. Wintersteiger efa3c0f68e
Fix compiler warnings 2019-10-28 14:15:25 +00:00
Nikolaj Bjorner 67c4777514 fix #2548 fix #2530 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2019-09-13 15:03:04 +02:00
Arie Gurfinkel 1b83c677ea spacer: fixes lim_num_generalizer 
Must check that newly constructed generalization blocks
the proof obligation.

Was only checking that generalization is entailed by the transition system!
 2019-09-13 14:22:57 +02:00
Arie Gurfinkel 0d3fed9a6a spacer: lemma generalizer for small numbers 
Attempts to reduce denominators in coefficients of farkas lemmas
 2019-09-09 20:32:13 +02:00
Nikolaj Bjorner 000e485794 add array selects to basic ackerman reduction improves performance significantly for #2525 as it now uses the SAT solver core instead of SMT core 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2019-09-01 12:17:19 -07:00
Bruce Mitchener e2122c0d3d Fix whitespace issues in *.pyg. 2019-08-15 10:19:33 -07:00
Arie Gurfinkel 375c0ff9a9 Implement get_proof() in bmc and spacer engines 2019-08-12 10:29:01 -07:00
Nikolaj Bjorner fc41a61b6e expose strategic solver factory prototype at level of solver module 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2019-08-09 15:52:12 -07:00
Arie Gurfinkel 92db639caf Use refutation to compute ground sat answer 2019-07-25 15:22:37 -04:00
Nikolaj Bjorner 8e2ad4e461 #2379 and #2380 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2019-07-04 07:08:47 +07:00
Nikolaj Bjorner e0a44894cf purge smt.timeout, use timeout instead to control solver timing #2354 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2019-06-21 16:56:24 +02:00
Nikolaj Bjorner 11a8ced769 fix #2353 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2019-06-21 10:47:56 +02:00
Nikolaj Bjorner 89e8a1392c na 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2019-06-21 10:40:35 +02:00
Nuno Lopes 1827f98851 more fixes for mutexes in shell 2019-06-19 16:42:00 +01:00