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39 commits

Author SHA1 Message Date
Nikolaj Bjorner
efbe0a6554 wip - updated version of elim_uncstr_tactic 
- remove reduce_invertible. It is subsumed by reduce_uncstr(2)
- introduce a simplifier for reduce_unconstrained. It uses reference counting to deal with inefficiency bug of legacy reduce_uncstr. It decomposes theory plugins into expr_inverter.

reduce_invertible is a tactic used in most built-in scenarios. It is useful for removing subterms that can be eliminated using "cheap" quantifier elimination. Specifically variables that occur only once can be removed in many cases by computing an expression that represents the effect computing a value for the eliminated occurrence.

The theory plugins for variable elimination are very partial and should be augmented by extensions, esp. for the case of bit-vectors where the invertibility conditions are thoroughly documented by Niemetz and Preiner.
 2022-11-12 17:56:45 -08:00
Nikolaj Bjorner
238ea0a264 add shorthands for concatentation 2022-11-08 12:21:25 -08:00
Nikolaj Bjorner
fe1b4bf5ce disable ternary, fixes to propagation, make bv_rewrites for multiplier n-ary 2022-10-26 23:44:38 -07:00
Jakob Rath
2c2ab0d57a Additional BV matchers 2022-08-01 18:37:11 +03:00
Bruce Mitchener
5d0dea05aa
Remove empty leaf destructors. (#6211) 2022-07-30 10:07:03 +01:00
CEisenhofer
0fa4b63d26
Added sbv2s (#5413) 
* Added sbv2s

* Fixed indention

Co-authored-by: Clemens Eisenhofer <Clemens.Eisenhofer@tuwien.ac.at>
 2021-07-16 17:58:28 +02:00
Nikolaj Bjorner
67ec86fc66 #5211 2021-04-22 22:53:18 -07:00
Nikolaj Bjorner
4a6083836a call it data instead of c_ptr for approaching C++11 std::vector convention. 2021-04-13 18:17:35 -07:00
Nikolaj Bjorner
2fef6dc502 more scaffolding 2021-03-21 11:31:14 -07:00
Nikolaj Bjorner
18143d8932 fix #5102 2021-03-15 01:01:33 -07:00
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
bb24b3f2be fix #4836 2020-11-29 21:08:28 -08:00
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
d02b0cde7a
running updates to bv_solver (#4674) 
* 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>

* 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>

* na

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

* na

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

* dbg

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

* bv

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

* drat and fresh

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

* move ackerman functionality

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

* na

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

* debugability

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

* towards debugability

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

* missing file

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>

* remove csp

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-09-07 20:35:32 -07:00
Nikolaj Bjorner
d0e20e44ff booyah 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-07-04 15:56:30 -07:00
Nikolaj Bjorner
843b6cf149 fix #4336 - check return values of eval, they can be null due to cancelation 2020-05-16 12:43:26 -07:00
nilsbecker
17adecff68 fixing ci issues 
fixing if condition
 2019-02-25 19:10:47 +01:00
nilsbecker
c033fb045f 2 things I prevoiusly overlooked 2019-02-23 12:34:17 +01:00
nilsbecker
6ee3941523 more cleanup 2019-02-23 12:08:08 +01:00
nilsbecker
a8586746be cleanup for pull request 2019-02-23 02:47:33 +01:00
Nils Becker
0870760eb5 logging meaning of theory specific constants 2018-12-03 22:41:59 +01:00
Nuno Lopes
a73d030321 invertible_tactic: add partial support for shifts 2018-07-02 18:29:34 +01:00
Bruce Mitchener
2fa304d8de Remove int64, uint64 typedefs in favor of int64_t / uint64_t. 2018-03-31 14:45:04 +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
Nikolaj Bjorner
e2b46257d6 reducing dependencies on simplifier 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2017-08-22 15:09:34 -07:00
Nikolaj Bjorner
b19f94ae5b make include paths uniformly use path relative to src. #534 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2017-07-31 13:24:11 -07:00
Nikolaj Bjorner
3a9857940e add missing axioms for str.at. Issue #953 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2017-03-25 19:31:01 +01:00
Nikolaj Bjorner
f175f864ec merge useful utilities from qsat 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2016-03-19 12:01:44 -07:00
Christoph M. Wintersteiger
7ddd2856c8 Added is_considered_uninterpreted() to decl_plugins. 2016-02-05 15:22:37 +00:00
Christoph M. Wintersteiger
bb5118acbb Bugfix for bv*div0 model construction. 2016-02-05 13:53:35 +00:00
Christoph M. Wintersteiger
b87f4ca677 whitespace 2016-02-05 13:48:05 +00:00
Nikolaj Bjorner
fd8fd40669 fix tests 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2015-11-20 08:00:01 -08:00
Nikolaj Bjorner
4bc044c982 update header guards to be C++ style. Fixes issue #9 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2015-07-08 23:18:40 -07:00
Nuno Lopes
67e9d74653 constify a few functions 
Signed-off-by: Nuno Lopes <t-nclaud@microsoft.com>
 2013-04-03 09:44:31 -07:00
Leonardo de Moura
cec328cfdc Add get_sort(expr * n) function that does not depend on ast_manager. Move power_of_two to rational class. Add arith_recognizers and bv_recognizers classes. The two new classes contain the 'read-only' methods from arith_util and bv_util. 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2012-12-18 14:44:51 -08:00
Leonardo de Moura
a07b459fdf Added is_unique_value. Its semantics is equal to the old is_value method. The contract for is_value changed. See comments at ast.h for more information. 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2012-12-07 12:53:51 -08:00
Leonardo de Moura
8a6997960a Reorganizing code. Added script for generating VS project files 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2012-10-20 15:16:37 -07:00
Renamed from lib/bv_decl_plugin.h (Browse further)