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Code Activity
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33 commits

Author SHA1 Message Date
Nikolaj Bjorner
9614e428a6 wip: enabling reinit approach 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2023-03-30 08:41:22 -07:00
Jakob Rath
3796770e46 Fix subsumption (need to check whether entry is valid) 2023-03-23 14:46:04 +01:00
Clemens Eisenhofer
60a405d134 Frequent lsb special case 2023-03-07 18:07:39 +01:00
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
790229a5d9 Bug fix for inverse of lsb-mask 2023-02-18 17:29:33 +01:00
Clemens Eisenhofer
e8b4875a17 Multiply by inverse to detect more parity constraints 2023-02-18 14:15:51 +01:00
Clemens Eisenhofer
5ddc727f91 Do a quick check for feasibility w.r.t. bits before using forbidden intervals 2023-02-15 20:06:13 +01:00
Nikolaj Bjorner
eda25e0ebb get-assignment 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2023-01-09 10:14:19 -08:00
Clemens Eisenhofer
79e7380ffc Pseudo-inverse op_constraint 2023-01-03 17:47:54 +01:00
Jakob Rath
f025d0ad63 Disable merging of p<q and p=q in lemmas for now (cf. test_band5) 2022-12-22 19:25:50 +01:00
Jakob Rath
0cfc0af7ee no need to alloc sets 2022-12-22 18:55:18 +01:00
Jakob Rath
b5af2164f4 Add simplify_clause::try_remove_equations 2022-12-22 14:53:42 +01:00
Jakob Rath
5bd63ab7c5 simplify note, and no need to be exclusive 2022-12-22 13:09:12 +01:00
Jakob Rath
5f2fd039ba Perform clause simplification earlier 2022-12-22 13:07:38 +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
c08866dcec Disable simplify_clause::try_recognize_bailout for now 2022-11-09 14:30:33 +01:00
Nikolaj Bjorner
eca72ffda1 debug simplify_clause 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-10-14 12:12:21 +02:00
Jakob Rath
05f1b4dd1a Update note on subsumption (for later) 2022-10-07 16:32:56 +02:00
Jakob Rath
a0fe568561 Another possible case for subsumption 2022-10-04 14:13:51 +02:00
Jakob Rath
8d803a1266 Move unfinished make_asserting code 2022-09-28 19:19:33 +02:00
Jakob Rath
0dae3bad6a Fix subsumption terminology 2022-09-28 15:35:05 +02:00
Jakob Rath
7be82a36f2 Recognize x != k among new literals in lemma 2022-09-28 15:16:05 +02:00
Jakob Rath
d09e3eaa37 Update notes 2022-09-27 18:00:30 +02:00
Jakob Rath
74d8497ed9 Fix subsumption for unilinear case 2022-09-27 17:53:45 +02:00
Jakob Rath
4e4b4fdd06 subsumption notes 2022-09-23 16:45:23 +02:00
Nikolaj Bjorner
0888f92efd remove 'change' just return 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-09-21 08:53:00 -07:00
Jakob Rath
41b74ab215 newline is implicit 2022-08-25 16:37:38 +02:00
Nikolaj Bjorner
437e83f6de fixmul negative case 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-08-23 08:20:32 -07:00
Nikolaj Bjorner
8128ae8109 generalize subsumption to non-univariate 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-08-22 10:46:49 -07:00
Jakob Rath
28ddd4ad56 Implement unilinear subsumption as clause simplification 2022-08-22 14:55:02 +02:00
Jakob Rath
53f276d225 apply 2022-08-22 12:44:56 +02:00
Jakob Rath
bf1a7914cd Add clause simplification stub 2022-08-22 12:36:05 +02:00