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104 commits

Author SHA1 Message Date
Nikolaj Bjorner
ad5fa9433f add experiment with quot-rem encoding 
experiment seeks to determine whether quot-rem encoding can substitute the division circuit encoding.
A first test suggests it makes no difference.
 2022-10-21 09:25:45 -07:00
Nikolaj Bjorner
2449ba93c5 add (disabled) experiment to use quot-rem instead of division circuit 2022-10-13 15:20:43 +02:00
Nikolaj Bjorner
058ed3de56 fix #6331 2022-09-07 12:37:50 -07:00
Nikolaj Bjorner
159026b5e8 regression fix to ackerman gc and memory smash, perf fix for handling bv2int axioms, perf fix for filtering ackerman 
this update addresses some perf regressions introduced when handling axioms for bv2int and a memory smash regression when decoupling bv-ackerman from in-processing. It adds a filter based on bv_eq_axioms for disabling ackerman reductions on disequalities.
 2022-08-26 10:44:33 -07:00
Nikolaj Bjorner
a38308792e #6288 
floating points may also track bit-literals.
Since the legacy solver doesn't handle dual tracking of literals we just let the floating point solver track.
 2022-08-21 15:47:19 -07:00
Nikolaj Bjorner
63f48f8fd4 add options for logging learned lemmas and theory axioms 
- add solver.axioms2files
  - prints negated theory axioms to files. Each file should be unsat
- add solver.lemmas2console
  - prints lemmas to the console.
- remove option smt.arith.dump_lemmas. It is replaced by solver.axioms2files
 2022-08-08 11:18:56 +03:00
Nikolaj Bjorner
1378e713ba fix #6157 2022-07-13 14:37:04 -07:00
Nikolaj Bjorner
580ed31afd fix types and incompleteness for feature #6104 2022-07-06 01:08:54 -07:00
Nikolaj Bjorner
de41cfd277 fix #6104 
add equality reasoning to bit-vector solver to instantiate int2bv(bv2int(x)) = x identity on demand.
 2022-07-05 12:23:24 -07:00
Clemens Eisenhofer
81189d6fdd
Added bit2bool to the API (#5992) 
* Fixed registering expressions in push/pop

* Reused existing function

* Reverted reusing can_propagate

* Added decide-callback to user-propagator

* Refactoring

* Fixed index

* Added bit2bool to the API
Fixed bug in user-propagator's decide callback

* Fixed typo
 2022-04-22 09:54:21 +01:00
Clemens Eisenhofer
e11496bc65
Added decide-callback to user-propagator (#5978) 
* Fixed registering expressions in push/pop

* Reused existing function

* Reverted reusing can_propagate

* Added decide-callback to user-propagator

* Refactoring

* Fixed index
 2022-04-15 20:07:17 +02:00
Nikolaj Bjorner
964e513353 re-add bv_eq_axioms, fix #5842 2022-03-19 12:37:01 -07:00
Nikolaj Bjorner
1e463955c2 #4889 avoid double internalize of bvle 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-02-20 09:09:28 -08:00
Nikolaj Bjorner
6202cd5394 fix #5842 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-02-16 17:38:19 +02:00
Nikolaj Bjorner
c00591daaf finish is-fixed 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-01-19 16:28:34 +01:00
Nikolaj Bjorner
0f03ef4ab0 for Clemens: ensure fixed values are propagated after registration 
Also allow to register expressions that the rewriter changes to ensure they get picked up.
 2022-01-19 14:38:11 +01:00
Nikolaj Bjorner
66fc980154 add helper axioms for int2bv #5396 2021-07-10 17:13:16 +02:00
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
bb2c40072e skip div 1 2021-03-28 14:17:49 -07:00
Nikolaj Bjorner
15a7621e27 remove template dependency for trail objects 2021-03-19 11:15:05 -07:00
Nikolaj Bjorner
026065ff71 streamline pb solver interface and naming after removal of xor 2021-02-28 12:32:04 -08:00
Nikolaj Bjorner
a152bb1e80 remove template Context dependency in every trail object 2021-02-08 15:41:57 -08:00
Nikolaj Bjorner
8f577d3943 remove ast_manager get_sort method entirely 2021-02-02 13:57:01 -08:00
Nikolaj Bjorner
937b61fc88 fix build, refactor 2021-02-02 05:26:57 -08:00
Nikolaj Bjorner
3ae4c6e9de refactor get_sort 2021-02-02 04:45:54 -08:00
Nikolaj Bjorner
bb24b3f2be fix #4836 2020-11-29 21:08:28 -08:00
Nikolaj Bjorner
64af8981ba fix #4834, regression after delay-propagating disequality axioms 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-11-29 19:43:46 -08:00
Nikolaj Bjorner
6e14d3fbd3 fix #4795 2020-11-27 18:00:36 -08:00
Nikolaj Bjorner
df09cb7c95 fix relevancy test 2020-11-27 14:49:05 -08:00
Nikolaj Bjorner
6771e44d93 fix #4825 #4824 2020-11-27 13:39:33 -08:00
Nikolaj Bjorner
cb4e5197fa #4740 
Fix https://github.com/Z3Prover/z3/issues/4740#issuecomment-712092917
 2020-11-12 16:55:07 -08:00
Nikolaj Bjorner
8691ef1d4d
additional bit-vector propagators (#4695) 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-09-18 12:38:29 -07:00
Nikolaj Bjorner
e46ad45968 na 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-08-24 02:20:30 -07:00
Nikolaj Bjorner
eef05e00af user propagator 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-08-20 10:39:20 -07:00
Nikolaj Bjorner
152c95f72a adding user-propagator ability 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-08-17 22:39:55 -07:00
Nikolaj Bjorner
ca3ec22b7a handle better cancellation for parallel, switch between cube mode and base level mode in smt.threads, expose parameters to control theory_bv and phase caching 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-08-16 23:29:24 -07:00
Nikolaj Bjorner
c63ad2e834 enable ranges for bit-vectors 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-08-13 10:53:37 -07:00
Nikolaj Bjorner
ab7b8b6ec5 fix #4572 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-07-08 11:58:44 -07:00
Nikolaj Bjorner
be36a8fd80 fix for SPACER models using bit2bool 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-06-16 10:45:11 -07:00
Nikolaj Bjorner
9ca5b3f304 fix #4449 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-06-03 21:10:07 -07:00
Nuno Lopes
023b630b5a remove unused class fields in BV theory 2020-06-02 16:36:38 +01:00
Nuno Lopes
b9ecf2512f more tweaks to BV internalizer & remove dead code 2020-06-02 15:26:57 +01:00
Nuno Lopes
e079af9d0d
add context::internalize() API that takes multiple expressions at once (#4488) 2020-06-01 11:51:39 -07:00
Nikolaj Bjorner
becf423c77
remove level of indirection for context and ast_manager in smt_theory (#4253) 
* remove level of indirection for context and ast_manager in smt_theory

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

* add request by #4252

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

* move to def

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

* int

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-05-08 16:46:03 -07:00
Nikolaj Bjorner
82236d44c6 some simplifications in theory_bv 2020-05-05 12:27:15 -07:00
Nikolaj Bjorner
029edcfabd fix #4114 2020-04-26 16:17:42 -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
426e4cc75c fix #3557 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-04-03 16:37:59 -07:00
Nikolaj Bjorner
36cddd0c46 fix #3235 - return early during lookaehad, avoid checking invariant when context is inconsistent 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-03-11 10:55:56 -07:00
Nikolaj Bjorner
bed2097fc4 fix #3076 - need to apply relevancy propagation in mk_bits. Assume bv v is already relevant but did not have bits associated with it, the bits need to then be marked as relevant 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-03-10 10:36:00 -07:00