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Author SHA1 Message Date
Nikolaj Bjorner
18121e5241
Merge pull request #1707 from agurfinkel/deep_space 
Deep space
 2018-06-28 05:38:25 -07:00
Nuno Lopes
5de6628a5d remove spurious copies and inc_refs around ref_vector 2018-06-28 10:31:38 +01:00
Arie Gurfinkel
4abab8aaf5 Fix bug in qe_term_graph 
In merge, parents of A instead of parents of B were traversed.
Among other things, it created stale marks that caused an
infinite loop in to_lits()
 2018-06-27 22:54:55 -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
bc6604441b Helpers in model_core 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
176c0a97f7 Gracefully handle absence of a proof 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
91ef84b8c9 Merge branch 'master' of https://github.com/z3prover/z3 2018-06-27 11:25:04 -07:00
Nikolaj Bjorner
20fc573d5b add laxer check for oeq_quant_intro 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2018-06-27 11:24:56 -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
Nuno Lopes
6c64e138b0 ufbv_rewriter_tactic: remove unneeded imp class 2018-06-26 18:05:14 +01:00
Nuno Lopes
2b31024dab add obj_ref::operator=(obj_ref &&) + a few explicit uses 2018-06-26 17:00:56 +01:00
Nikolaj Bjorner
ea4218a192 add upper-case files 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2018-06-26 07:52:38 -07:00
Nikolaj Bjorner
1c1357af7d remove lower case files 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2018-06-26 07:52:02 -07:00
Nikolaj Bjorner
a8e864a3e6 add missing files 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2018-06-26 07:36:36 -07:00
Nikolaj Bjorner
520ce9a5ee integrate lambda expressions 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2018-06-26 07:23:04 -07:00
Nikolaj Bjorner
bf4edef761 fix mbi arithmetic solver for lower bounds 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2018-06-26 06:37:47 -07:00
Nikolaj Bjorner
6804329661
Merge pull request #1701 from agurfinkel/deep_space 
Normalize lit0 in theory clause
 2018-06-25 07:35:34 -07:00
Arie Gurfinkel
3af3c82f67 Normalize lit0 in theory clause 2018-06-25 09:21:30 -04:00
Nikolaj Bjorner
a5f4980c92
Merge pull request #1700 from agurfinkel/deep_space 
Deep space
 2018-06-24 19:13:34 -07:00
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
61c25fdc8e Merge branch 'master' of https://github.com/z3prover/z3 2018-06-23 21:57:19 -07:00
Nikolaj Bjorner
e187023304 fix #1699 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2018-06-23 21:57:10 -07:00
Nikolaj Bjorner
3d27232b2a
Merge pull request #1697 from rainoftime/master 
Refine default_tactic for better support of pure SAT instances
 2018-06-22 09:31:19 -07:00
rainoftime
fc8b1d9a7d Refine default_tactic: if the constraint is an SAT instance and proof is not enabled, then use the qffd tactic 2018-06-22 16:46:47 +08:00
Nikolaj Bjorner
8969a7035c
Merge pull request #1693 from NikolajBjorner/master 
fix #1675
 2018-06-20 17:36:24 -07:00