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137 commits

Author SHA1 Message Date
Nikolaj Bjorner
0f20175bdd fix #2556, sign of of inequality is not restricted to -1, 0, 1, but can be -2, -3 etc 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2019-09-14 19:41:01 -04:00
Nikolaj Bjorner
67c4777514 fix #2548 fix #2530 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2019-09-13 15:03:04 +02:00
Nikolaj Bjorner
bc723fbe89 fix #2539 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2019-09-06 15:07:43 +03:00
Nikolaj Bjorner
29f0897afc tweaking nlqsat 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2019-09-06 09:42:57 +03:00
Nikolaj Bjorner
2e6908bd9e fix #2509, fix issue with model inheritance exposed by #2483 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2019-08-27 10:48:22 -03:00
Bruce Mitchener
ce7f9c3f3d Remove unused variable. 2019-08-04 18:37:05 -07:00
Nikolaj Bjorner
c7dc420b3b let me guess, ASAN doesn't like 0-byte memcpy 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2019-08-03 23:19:59 -07:00
Nikolaj Bjorner
4431a534b3 fix #2450 - track assumptions across lazy explanations and variable equalities 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2019-08-03 07:57:16 -07:00
Nikolaj Bjorner
db5af3088b logging for #2450 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2019-08-02 16:47:18 -07:00
Nikolaj Bjorner
1d488d07fa nlsat 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2019-08-02 15:06:34 -07:00
Nikolaj Bjorner
7f073a0585 fix #2452 fix #2451 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2019-08-01 16:28:15 +08:00
Nikolaj Bjorner
26c1c744aa fix #2396 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2019-07-12 17:36:30 -04:00
Nikolaj Bjorner
0bca2aabff remove invocation of debugger 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2019-07-12 17:07:44 -04:00
Nikolaj Bjorner
fc02114bf4 fix #2242, move purify-arith down to after ite elimination 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2019-05-09 11:55:00 +02:00
Nikolaj Bjorner
6071797ba9 fix again 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2019-05-08 12:11:43 +02:00
Nikolaj Bjorner
f79dccccfe fix #2238 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2019-05-08 10:15:57 +02:00
Nikolaj Bjorner
28773c8d5c na 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2019-04-27 13:49:44 -07:00
Nikolaj Bjorner
944ce1135b replace __debug__ by Z3_DEBUG #2225 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2019-04-27 13:47:53 -07:00
Nikolaj Bjorner
045fef35ed fix build break 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2018-12-11 09:35:27 -08:00
Nikolaj Bjorner
796689f708 #1948 remove memory allocation in nlsat::solver::~solver 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2018-12-11 09:08:53 -08:00
Florian Pigorsch
326bf401b9 Fix some spelling errors (mostly in comments). 2018-10-20 17:07:41 +02:00
Nikolaj Bjorner
d00ffdda82 strengthen filter for specialized tactic conditions, add flag to disable hnf to lp_params 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2018-07-15 22:35:47 -07:00
Nuno Lopes
8791f61aa7 reduce mem allocation in tactic API 2018-07-02 13:41:44 +01:00
Nikolaj Bjorner
8969a7035c
Merge pull request #1693 from NikolajBjorner/master 
fix #1675
 2018-06-20 17:36:24 -07:00
Nikolaj Bjorner
19e2f8c9d5 fix #1694 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2018-06-20 17:35:41 -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
8040eddf65 fix #1658 fix #1689 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2018-06-18 16:41:04 -07:00
Nikolaj Bjorner
ff0f257102 remove iff 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2018-06-14 16:08:48 -07:00
Nikolaj Bjorner
75eba45926
Merge pull request #1606 from NikolajBjorner/opt 
This integrates several features and improvements to the SAT and finite domain solver.

- The SAT solver by default handle cardinality and PB constraints using a custom plugin that operates directly on cardinality and PB constraints.
- A parallel mode is available for select theories, including QF_BV. By setting parallel.enable=true Z3 will spawn a number of worker threads proportional to the number of available CPU cores to apply cube and conquer solving on the goal.
- A "cube" interface is exposed over the solver API. 
- Model conversion is first class over the textual API, such that subgoals created from running a solver can be passed in text files and a model for the original formula can be recreated from the result.
- This has also led to changes in how models are tracked over tactic subgoals. The API for extracting models from apply_result have been replaced.
- An optional mode handles xor constraints using a custom xor propagator. It is off by default and its value not demonstrated.
- The SAT solver includes new inprocessing technques that are available during simplification. It performs asymmetric tautology elimination by default, and one can turn on more powerful inprocessing techniques (known as ACCE, ABCE, CCE). Asymmetric branching also uses features introduced in Lingeling by exploiting binary implication graphs.

- A breaking change to the API is that parsers for SMT-LIB2 formulas return a vector of formulas as opposed to a conjunction of formulas. The vector of formulas correspond to the set of "assert" instructions in the SMT-LIB input.
 2018-05-23 08:47:08 -07:00
Nikolaj Bjorner
363d7aad2a fix bug reported in #1637 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2018-05-22 20:02:08 -07:00
Nikolaj Bjorner
c513f3ca09 merge with master 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2018-03-25 14:57:01 -07:00
Bruce Mitchener
76eb7b9ede Use nullptr. 2018-02-12 14:05:55 +07:00
Bruce Mitchener
b7d1753843 Use override rather than virtual. 2018-02-09 21:19:27 +07:00
Bruce Mitchener
ae8027e594 Fix typos. 2018-02-01 19:39:43 +07:00
Bruce Mitchener
73b3da37d8 Typo fixes. 2018-01-02 22:48:06 +07:00
Nikolaj Bjorner
8dadd30db5 add __copy__, __deepcopy__ as alias to translate on same context #1427. Add generalized Gaussian elimination as an option to first-pass NL solver 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2018-01-01 17:11:43 -08:00
Nikolaj Bjorner
79a9dfd8fd adding pre-processing to nlsat for equations 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2017-12-30 20:35:33 -08:00
Nikolaj Bjorner
517b081202 remove custom exception, perhaps this handles exception issue 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2017-12-18 21:13:03 -08:00
Nikolaj Bjorner
13ee8da659 add virtual destructor to see if this helps ASan error 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2017-12-18 15:57:16 -08:00
Nikolaj Bjorner
c3add4eeda add back missing initialization of lo 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2017-12-15 06:56:36 -08:00
Nikolaj Bjorner
21f685fa5a fix nlsat regression 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2017-12-15 06:54:02 -08:00
Nikolaj Bjorner
397cdfc608 avoid crash on nl 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2017-12-15 06:38:56 -08:00
Nikolaj Bjorner
1c3d385c25 fix crashes in nlsat 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2017-12-14 17:24:13 -08:00
Nikolaj Bjorner
ab39f06df7 fix crashes in nlsat 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2017-12-14 17:22:49 -08:00
Nikolaj Bjorner
e5fa35e969 add integer branch and bound to nlsat 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2017-12-14 17:07:17 -08:00
Nikolaj Bjorner
2f218b0bdc remove also cores as arguments to tactics 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2017-11-19 12:18:50 -08:00
Nikolaj Bjorner
4bbece6616 re-organize proof and model converters to be associated with goals instead of external 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2017-11-18 16:33:54 -08:00
Nikolaj Bjorner
df6b1a707e remove proof_converter from tactic application, removing nlsat_tactic 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2017-11-17 23:32:29 -08:00
Nikolaj Bjorner
651587ce01 merge with master branch 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2017-09-19 09:39:22 -07:00
Nikolaj Bjorner
2b82fd5d0c updated include directives 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2017-08-01 10:51:47 -07:00