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949 commits

Author SHA1 Message Date
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
Nikolaj Bjorner e0d8cefde4 remove cooperate 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2019-06-12 20:15:46 -07:00
Nikolaj Bjorner 7bfb730fee fix traffic jam 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2019-06-10 17:45:55 -07:00
Nikolaj Bjorner 01f6489892 fix #2310 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2019-05-31 16:22:49 -07:00
Nikolaj Bjorner 8893913c98 remove internal referenes to set_activity 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2019-05-30 16:06:05 -07:00
Nikolaj Bjorner 92613f26b3 remove additional push/pop on fixedpoint 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2019-04-27 13:56:16 -07:00
Nikolaj Bjorner 5c67c9d907 print certificate for #2202, enable CTL-C for API fix #2203 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2019-03-24 17:09:02 -07:00
Nikolaj Bjorner f00697cf95 fix #2155 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2019-03-03 22:33:28 -08:00
Nikolaj Bjorner 26921d1c9c fix #2155 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2019-03-03 22:32:50 -08:00
Nikolaj Bjorner 7aa8b4ac2a restrict idiv-bound checks to bounded terms 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2019-03-03 19:11:22 -08:00
Nuno Lopes 2f33bafd5a stopwatches: fix a few places that would call start/stop multiple times 2019-02-21 14:59:31 +00:00
Nikolaj Bjorner 89bf2d4368 add API for setting variable activity 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2019-02-15 12:05:24 -08:00
Nikolaj Bjorner a76107e50d fix build 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2019-02-01 18:44:52 -08:00
Nikolaj Bjorner 8d20310758 adding trail/levels 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2019-01-29 14:45:51 -08:00
Nikolaj Bjorner 498864c582 adding dump facility for cancelation #2095, easing dimacs in/out 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2019-01-24 12:21:23 -08:00
Bruce Mitchener 44bc00f13d Fix typos. 2018-12-23 21:58:57 -05:00
Bruce Mitchener 5fa861fa95 Simplify some boolean returns. 2018-12-04 22:41:31 +07:00
Nikolaj Bjorner f2de15a665
Merge pull request #1982 from waywardmonkeys/avoid-const-params-in-decls 
Avoid const params in decls.
 2018-11-28 09:08:03 -08:00
Bruce Mitchener 2016f48dc9 Avoid const params in decls. 
Const-qualification of parameters only has an effect in function
definitions.
 2018-11-28 19:07:33 +07:00
Bruce Mitchener b83d6d77c9 Use nullptr rather than 0/NULL. 2018-11-28 14:57:01 +07:00
Bruce Mitchener e570940662 Prefer using empty rather than size comparisons. 2018-11-27 21:42:04 +07:00
Nikolaj Bjorner 72400f1869 fix #1927 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2018-11-12 03:43:04 -08:00
Nikolaj Bjorner cc4b26f738
Merge pull request #1930 from agurfinkel/deep_space 
print certificate
 2018-11-11 09:31:38 -08:00
Bruce Mitchener 1082fad27a Fix typos. 2018-11-11 22:21:43 +07:00
Arie Gurfinkel d4e476d764 Work around unexpected behaviour in generalizer 2018-11-11 09:06:36 -05:00
Arie Gurfinkel 6cc6ffcde2 Fix display_certificate in spacer 
This is expected to work now
(query q1 :print-certificate true)
 2018-11-11 09:06:22 -05:00
Arie Gurfinkel 58d93d8907 Fix add external lemmas to solver even if use_bg_invs=false 
spacer.use_bg_invs controls how user-supplied invariants are used.
However, the user expects them to be used independent of the option.
 2018-11-11 08:41:22 -05:00
Nikolaj Bjorner d7ecaa2ebb add stub for certificate #1926 2018-11-10 09:56:44 -08:00
Florian Pigorsch 326bf401b9 Fix some spelling errors (mostly in comments). 2018-10-20 17:07:41 +02:00
Bruce Mitchener dda62ae78c Use bool literals instead of 0/1. 2018-10-17 22:42:57 +07:00
Michał Janiszewski cfd0486582 Catch exceptions by const-reference 
Exceptions caught by value incur needless cost in C++, most of them can
be caught by const-reference, especially as nearly none are actually
used. This could allow compiler generate a slightly more efficient code.
 2018-10-16 19:16:07 +02:00
Nikolaj Bjorner 6704a4be02
Revert "Made Z3 compile for C++17 with MSVC" 2018-10-15 12:52:19 -07:00
Matthew Parkinson 01005a46f6 Made it more legal C++17 2018-10-15 17:25:34 +01:00
Bruce Mitchener 58682c20be dl_util: Use an unsigned to match other values. 2018-10-13 07:58:27 +07:00
Nikolaj Bjorner c4829dfa22 fix #1577 again 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2018-10-06 09:01:01 -07:00
Bruce Mitchener 373b691709 Use 'override' where possible. 2018-10-02 10:26:38 +07:00
Bruce Mitchener cdfc19a885 Use nullptr. 2018-10-02 09:11:19 +07:00
Arie Gurfinkel f67346d16e Fix is_infty_level to treat 2^16-1 as infinity 2018-09-04 21:49:59 -04:00
Arie Gurfinkel 5d2f682f7a Enable proof mode in add_cover 2018-09-04 21:49:59 -04:00
Arie Gurfinkel 7bff74dec0 Minor pass on synchronize transform 2018-09-04 21:49:59 -04:00
Arie Gurfinkel 24044429a7 Rename cache to m_cache 2018-09-04 21:49:59 -04:00
Arie Gurfinkel 0516e6f21f Integrating synchronize pass 2018-09-04 21:49:59 -04:00
Arie Gurfinkel 8400122596 mk_synchronize rule transformation 2018-09-04 21:49:59 -04:00
Arie Gurfinkel 3a01fd791b Replace rule API 2018-09-04 21:49:59 -04:00
Arie Gurfinkel 0035d9b8cb Background external invariants 
Background external invariants are constraints that are assumed to be
true of the system. This commit introduces a mode in which
background invariants are used only duing inductive generalization
and lemma pushing, but not during predecessor computation.

It is believed that this will be more efficient used of background
external invariants since they will not be able to disturb how
predecessors are generalized and computed.

Based on a patch by Jorge Navas
 2018-09-04 21:49:59 -04:00
Arie Gurfinkel 533e9c5837 Expand equality literals when eq_prop is disabled 
When equality propagation is disabled for arithmetic,
equality atoms are expanded into inequality for potentially
better generalization with interpolation
 2018-09-04 21:49:59 -04:00
Nikolaj Bjorner 84c7df75d6 record statistics setting in config_params so that fp engine can access them, fix serialization bug when check-assumptions returns unsat 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2018-08-06 16:21:27 -07:00
Nikolaj Bjorner d47e06732c bmc improvements, move fd_solver to self-contained directory 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2018-08-05 10:02:15 -07:00
Nikolaj Bjorner e041ebbe80 bmc improvements, move fd_solver to self-contained directory 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2018-08-05 10:00:49 -07:00
Arie Gurfinkel 5d1149adb2 Transformation to eliminate term-ite expressions from DL rules 2018-07-02 17:09:56 -04:00
Arie Gurfinkel 6d75c31468 First draft of elim_term_ite xform. Not working. 2018-07-02 17:09:56 -04:00
Arie Gurfinkel 7acea2791d -tr:spacer.expand-add --> -tr:spacer_progress 2018-07-02 17:09:56 -04:00
Nuno Lopes cef17c22a1 remove some allocs from exceptions 2018-07-02 17:08:02 +01:00
Nikolaj Bjorner c4d893dfad fix compiler warnings 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2018-06-30 06:10:09 -07:00
Nikolaj Bjorner 3ad7d59f22 Merge branch 'master' of https://github.com/z3prover/z3 2018-06-29 21:25:21 -07:00
Nikolaj Bjorner 797e576195 unreferenced variable in release mode, spaces 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2018-06-29 21:25:08 -07:00
Arie Gurfinkel 9b578083f5 Avoid non-linear arithmetic in qgen 2018-06-28 16:50:43 -04:00
Arie Gurfinkel 5e87d7c4a3 Formatting: move q3 parameters closer together 2018-06-28 15:38:51 -04:00
Arie Gurfinkel bd63458778 Shuffle assumptions on every call 
Order of assumptions appears to make a huge difference on what lemmas
are discovered. Shuffling the assumptions ensures that the solver
is never stuck with any bad order.
 2018-06-28 15:38:51 -04:00
Arie Gurfinkel 6422fa3739 Fix arithmetic equality solver in qgen 2018-06-28 15:38:51 -04:00
Arie Gurfinkel 41a05e9d58 Add methods to print pob 2018-06-28 15:38:51 -04:00
Arie Gurfinkel a63e4b48ca Fix order of arguments when normalizing a conjunction 2018-06-28 15:38:51 -04:00
Arie Gurfinkel a8c9e3a837 Bug fix in qgen 2018-06-28 15:38:50 -04:00
Arie Gurfinkel e8e27f0daf Don't simplify bounds when normalizing a lemma 2018-06-28 15:38:50 -04:00
Arie Gurfinkel 0e5434ce0c Debug prints 2018-06-27 22:49:36 -04:00
Arie Gurfinkel 7c924c49f6 Do not evaluate quantified formulas in a model 2018-06-27 22:49:36 -04:00
Arie Gurfinkel 704c19920d Only 10 levels of weakness 2018-06-27 22:49:35 -04:00
Arie Gurfinkel 4339722e98 Fix segfaults in qgen 2018-06-27 22:49:35 -04:00
Arie Gurfinkel 49e9480928 Fix lemma_as_cti option 
Use negation of a lemma as a proof obligation. This speeds up discovering
bad lemmas that do not contain some reachable states.
 2018-06-27 22:49:35 -04:00
Arie Gurfinkel d7234dc039 Inactive debug code 2018-06-27 22:49:35 -04:00
Arie Gurfinkel 2b4d92821a Avoid crashing on cancel 2018-06-27 22:49:35 -04:00
Arie Gurfinkel f6dcc6fc72 API to find pob in pob_manager 2018-06-27 22:49:35 -04:00
Arie Gurfinkel 5bc57238a6 Track whether pob is in pob_queue 
pob_queue is a priority queue. Changing a pob while it is in the queue might change
the priority. This is a source of subtle bugs. The flag is ment to help defend
against this issues in the future.

As a side-effect, a pob that is already in the queue will be silently not added
to it, and a new version of a pob might be created if a version being looked
for is already in the queue.
 2018-06-27 22:49:35 -04:00
Arie Gurfinkel c00c6b4285 Pobs are always managed 
Removed options to allow unmanaged pobs.
Other minor cleanups.
 2018-06-27 22:49:35 -04:00
Arie Gurfinkel 1910b4c87c Rename pobs into pob_manager 2018-06-27 22:49:35 -04:00
Arie Gurfinkel d9100437ce Weakness of the lemma independent of the pob 
Lemma inherits its weakness score from the pob. However,
pob's weakness might be reset or changed for some other reason.

To avoid affecting the lemma, the weakness is copied on
construction.
 2018-06-27 22:49:35 -04:00
Nikolaj Bjorner eabe91cdef Merge branch 'master' of https://github.com/z3prover/z3 2018-06-27 17:05:52 -07:00
Nikolaj Bjorner 7844476a7d fixes to term-graph, add proof-checker routines for PR_BIND, remove orphaned file 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2018-06-27 17:04:47 -07:00
Nikolaj Bjorner 06c9a9f3e1 merge 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2018-06-27 08:51:22 -07:00
Nikolaj Bjorner 5762be2a0f fix 1703 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2018-06-27 08:49:52 -07:00
Nikolaj Bjorner 520ce9a5ee integrate lambda expressions 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2018-06-26 07:23:04 -07:00
Arie Gurfinkel 3af3c82f67 Normalize lit0 in theory clause 2018-06-25 09:21:30 -04:00
Arie Gurfinkel f330b96a35 Gracefully failing in assign-bounds to farkas 2018-06-24 21:03:09 -04:00
Arie Gurfinkel e906930922 Debug code 2018-06-24 20:43:04 -04:00
Arie Gurfinkel 8e57ab5d97 Computing missing coeff for assign-bounds lemma 2018-06-24 20:43:04 -04:00
Arie Gurfinkel 1764bb8785 Cleaning up unsat_core_learner 2018-06-24 20:43:04 -04:00
Arie Gurfinkel 7b2ca769ef Cleanup 2018-06-24 20:43:04 -04:00
Arie Gurfinkel 58dc5451e1 iuc code cleanup 2018-06-24 20:43:04 -04:00
Arie Gurfinkel 9c9d0d0840 convert assign-bounds axioms to farkas lemmas 2018-06-24 20:43:04 -04:00
Arie Gurfinkel ac23002dce Fix bugs in iuc generation 2018-06-24 20:43:04 -04:00
Arie Gurfinkel 4ed6783aff Formatting only. No change to code 2018-06-24 20:43:04 -04:00
Arie Gurfinkel fcfa6baeca Refactor mk_th_lemma 2018-06-24 20:43:04 -04:00
Nikolaj Bjorner 915983821b add rewrite to each branch of mbp 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2018-06-24 17:06:49 -07:00
Nikolaj Bjorner c32bfb5ecd fix crash during cancelation 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2018-06-24 15:29:40 -07:00
Nikolaj Bjorner 335d672bf1 fix #1675, regression in core processing in maxres 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2018-06-19 23:23:19 -07:00
Nikolaj Bjorner c81f25a1c8 fix build issue 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2018-06-17 09:59:03 -07:00
Nikolaj Bjorner 035baf7cb9 align use of spaces before for/if/while 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2018-06-17 09:43:40 -07:00
Arie Gurfinkel 4204b6ede2 Switch rest of spacer to new model API and remove mev_util 2018-06-16 14:40:17 -07:00
Arie Gurfinkel a222b6d41f Switch reach_fact to new model API 2018-06-16 14:17:33 -07:00
Arie Gurfinkel f226c6682b Switched derivation to new model API 2018-06-16 14:09:24 -07:00
Arie Gurfinkel 5e65b37f25 Switch spacer::qe_project to new model API 2018-06-16 13:58:58 -07:00
Arie Gurfinkel fffc8489bf Switched compute_implicant_literals to use new model API 2018-06-16 13:43:30 -07:00
Nikolaj Bjorner caca07c85f fix path to moved header file 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2018-06-15 15:28:18 -07:00
Nikolaj Bjorner b6c43f6143 move files for build script 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2018-06-15 15:13:55 -07:00
Nikolaj Bjorner 6fc08e9c9f Merge branch 'master' of https://github.com/z3prover/z3 2018-06-15 14:58:10 -07:00
Nikolaj Bjorner a51d6cbcbc debug model evaluator 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2018-06-15 14:58:02 -07:00
Arie Gurfinkel 9109968e55 Cleanup fixedpoint options 
Replace pdr options with spacer
Repace fixedpoint module with fp
 2018-06-14 16:08:52 -07:00
Arie Gurfinkel 619f681d28 Fix bug in iuc_solver::get_unsat_core() that prevented clean cores 2018-06-14 16:08:52 -07:00
Arie Gurfinkel d38879e478 Renamed spacer options 2018-06-14 16:08:52 -07:00
Nikolaj Bjorner 74621e0b7d first eufi example running 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2018-06-14 16:08:52 -07:00
Nikolaj Bjorner 9a0406d181 replace app by expr 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2018-06-14 16:08:52 -07:00
Nikolaj Bjorner 2e44850df9 move term graph closer to qe 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2018-06-14 16:08:51 -07:00
Arie Gurfinkel 4a2eb909bf Re-fixing a bug in compute_implicant_literals() 2018-06-14 16:08:51 -07:00
Arie Gurfinkel 8445e2a7a2 Fix bug in weak abs 
Must ensure that weak model makes all summaries true. Otherwise,
it is possible to get stuck discovering the same lemma forever.
 2018-06-14 16:08:51 -07:00
Arie Gurfinkel df7ab0e496 pred_transformer: factor rule bookkeeping to a separate class 2018-06-14 16:08:51 -07:00
Arie Gurfinkel 4099f31f4f Fix refutation generation 2018-06-14 16:08:51 -07:00
Arie Gurfinkel 18e3c7b13d Fix bug introduced by formatting 2018-06-14 16:08:51 -07:00
Nikolaj Bjorner f3466bb3e4 tidy 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2018-06-14 16:08:51 -07:00
Nikolaj Bjorner 1920450f98 throttle ite-blasting 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2018-06-14 16:08:51 -07:00
Arie Gurfinkel 1f0fd38c99 ground sat refutation from spacer (wip) 2018-06-14 16:08:51 -07:00
Arie Gurfinkel 0534b72c4d sort hypotheses 2018-06-14 16:08:51 -07:00
Arie Gurfinkel c5fb1c1223 Use vector instead of a hashtable to represent a set 2018-06-14 16:08:51 -07:00
Arie Gurfinkel e84ca25f05 Check whether one proof node is an ancestor of another on-demand 
Instead of pre-computing sets
 2018-06-14 16:08:51 -07:00
Arie Gurfinkel a40e0dce0c proof_utils: use expr_mark instead of hashtable 2018-06-14 16:08:51 -07:00
Arie Gurfinkel 2a6b694373 Imrove hypothesis_reducer 2018-06-14 16:08:51 -07:00
Nikolaj Bjorner 4b2196f114 nits 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2018-06-14 16:08:51 -07:00
Nikolaj Bjorner 6adaed718f remove pdr 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2018-06-14 16:08:51 -07:00
Arie Gurfinkel cefdb8c01d Use reachable cache 2018-06-14 16:08:51 -07:00
Arie Gurfinkel 9fef466c63 Respect children order in spacer/pdr 2018-06-14 16:08:51 -07:00
Arie Gurfinkel f74ca2f0c0 Fix caching bug in mbc 2018-06-14 16:08:51 -07:00
Arie Gurfinkel 54add824e9 Debug print 2018-06-14 16:08:51 -07:00
Nikolaj Bjorner c3fb863ad1 formatting/reviewing 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2018-06-14 16:08:51 -07:00
Arie Gurfinkel d2ae3b4025 Create children for pdr in spacer 
This is first working version of gpdr strategy. Passes one test.
 2018-06-14 16:08:51 -07:00
Arie Gurfinkel e1a45671b3 Cleanup spacer options 2018-06-14 16:08:51 -07:00
Arie Gurfinkel 1994f1d7e4 Cleanup of spacer options 2018-06-14 16:08:51 -07:00
Arie Gurfinkel cb683389f6 spacer::context: Factor params into udpt_params 2018-06-14 16:08:51 -07:00
Arie Gurfinkel 521392a8f1 First partially working pdr strategy in spacer 2018-06-14 16:08:51 -07:00
Arie Gurfinkel ab5f579d0b Comments in pdr_context.cpp 2018-06-14 16:08:51 -07:00
Arie Gurfinkel ece2e53c98 Ported model_search and model_node from pdr into spacer 2018-06-14 16:08:51 -07:00
Arie Gurfinkel 478d7c790e mbc: moved code under get_subst() 2018-06-14 16:08:51 -07:00
Arie Gurfinkel e860e4d045 Bug fix for quantified pob generation 2018-06-14 16:08:51 -07:00
Arie Gurfinkel 2a243d38d1 Model based Cartesian decomposition 2018-06-14 16:08:51 -07:00