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Code Activity
18930 commits 50 branches 53 tags 183 MiB
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29 commits

Author SHA1 Message Date
Jakob Rath
64e452e086 Add some clause names 2023-03-29 15:30:05 +02:00
Clemens Eisenhofer
5b35450891 Several changes: 
- Extend fixed-bit FI to both directions
- really randomized restart
- MSB for fixed-bits
- Forward propagation (band, lshift, rshift) with good justifications (strengthen during saturation)
 2023-03-07 15:21:14 +01:00
Clemens Eisenhofer
6b48b25beb Draft: Made division/remainder to op_constraints (not yet used - old code still called) 2023-02-09 23:36:15 +01:00
Jakob Rath
b6f8538d20 Update parity lemmas 
p != 0  ==>  odd(r)
... added premise p != 0

parity(p) < k    ==>  r <= 2^(N - k) - 1
... do this also in the other branch
    (otherwise we hit the UNREACHABLE in bench3)
 2023-01-16 16:46:12 +01:00
Clemens Eisenhofer
79e7380ffc Pseudo-inverse op_constraint 2023-01-03 17:47:54 +01:00
Clemens Eisenhofer
74ec28201e Merge remote-tracking branch 'Z3Prover/polysat' into polysat 2022-12-25 12:41:39 +01:00
Jakob Rath
be20c0d54e Less allocation during lookup, remove unused argument 2022-12-22 15:09:18 +01:00
Jakob Rath
86a36a524a Fix unsoundness in viable fallback 
(the src constraint of forbidden intervals is not necessarily univariate)
 2022-12-19 15:37:49 +01:00
Clemens Eisenhofer
ec06027515 First step towards explaining single bits 2022-12-19 12:27:37 +01:00
Nikolaj Bjorner
68d9b44d67 add activate for & 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-12-03 05:55:14 -08:00
Nikolaj Bjorner
215a4e9bad review and fix soundness bug in band rule 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-12-02 19:04:23 -08:00
Jakob Rath
e338d42cff Allow creation of op_constraint lemmas without adding them 2022-11-30 14:57:14 +01:00
Jakob Rath
032e7e0337 Remove not_op 2022-11-30 11:47:00 +01:00
Jakob Rath
7468b2326c inequality 2022-11-28 18:00:17 +01:00
Jakob Rath
fdc186b204 Simplify constraint evaluation 2022-11-23 12:19:03 +01:00
Jakob Rath
6e72a97727 Refactor assignment and search state 2022-11-21 17:25:15 +01:00
Jakob Rath
adc9f7abe4 Add basic implementation of left shift 2022-11-17 17:37:52 +01:00
Jakob Rath
2953b1c093 Dedup op constraints 2022-11-07 15:02:48 +01:00
Jakob Rath
6218931dde We only need one of is_true/is_false 2022-09-29 17:19:47 +02:00
Jakob Rath
0fb8c72f50 print more information 2022-06-29 14:26:25 +02:00
Jakob Rath
9d47d7959d helper functions to add constraints to univariate_solver 2022-03-17 14:08:00 +01:00
Nikolaj Bjorner
8c9835bca6 smul no overflow 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-02-16 18:55:07 +02:00
Nikolaj Bjorner
be790b8892 add back minimize vars 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-01-26 18:01:26 -08:00
Nikolaj Bjorner
cbbf1381f7 update to use incremental substitution 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-01-23 03:00:25 +01:00
Jakob Rath
3a34995b03 Add eval_and 2022-01-12 13:47:05 +01:00
Nikolaj Bjorner
02369647a0 add functionality for bit-wise and 2021-12-15 14:07:53 -08:00
Nikolaj Bjorner
a6684824c1 elaborate on narrow 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-12-15 10:13:33 -08:00
Nikolaj Bjorner
12fe964ea5 na 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-12-15 09:32:09 -08:00
Nikolaj Bjorner
a2aa1170f9 rename to op-constraint to give space for other operations 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-12-15 09:20:11 -08:00
Renamed from src/math/polysat/shr_constraint.h (Browse further)