Nikolaj Bjorner
9fc4015c46
remove ternary clause optimization
...
Removing ternary clause optimization from sat_solver simplifies special case handling of ternary clauses throughout the sat solver and dependent solvers (pb_solver). Benchmarking on QF_BV suggests the ternary clause optimization does not have any effect. While removing ternary clause optimization two bugs in unit propagation were also uncovered: it missed propagations when the only a single undef literal remained in the non-watched literals and it did not update blocked literals in cases where it could in the watch list. These performance bugs were for general clauses, ternary clause propagation did not miss propagations (and don't use blocked literals), but fixing these issues for general clauses appear to have made ternary clause optimization irrelevant based on what was measured.
2022-10-30 03:57:39 -07:00
Nikolaj Bjorner
fe1b4bf5ce
disable ternary, fixes to propagation, make bv_rewrites for multiplier n-ary
2022-10-26 23:44:38 -07:00
Nikolaj Bjorner
1e21ea4645
fix cleanup bug exposed by reordering simplifcations
...
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
2019-06-23 01:25:50 +02:00
Nikolaj Bjorner
d17248821a
include chronological backtracking, two-phase sat, xor inprocessing, probsat, ddfw
...
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
2019-06-13 08:45:21 -07:00
Nikolaj Bjorner
93ee05648e
add shortcuts for unit assertions, conflicts
...
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
2019-02-11 10:56:36 -08:00
Nikolaj Bjorner
24dfdfe9bc
disable fixes for #2128 and related as it breaks model evaluation time in regressions, set longer delay for inprocessing in sat solver, report stats
...
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
2019-02-09 16:06:02 -08:00
Nikolaj Bjorner
f2e636c598
record simplified input clauses as lemmas
...
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
2019-01-16 16:37:21 -08:00
Nikolaj Bjorner
65bd427e46
neatify statistics
...
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
2019-01-14 16:48:48 -08:00
Nikolaj Bjorner
836f156d54
fix drat for units learned from binary clause resolution
...
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
2019-01-12 00:12:20 -08:00
Nikolaj Bjorner
b8d18c6c6d
speed-up handling of cnf input to inc_sat_solver
...
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
2019-01-11 20:52:19 -08:00
Nikolaj Bjorner
efaab6d8fd
have sat cleaner use a fixed-point
...
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
2019-01-10 11:38:35 -08:00
Nikolaj Bjorner
a79400a01b
fix bugs in scc_tr
...
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
2018-03-25 14:55:42 -07:00
Nikolaj Bjorner
2739342aba
fix updates to cce
...
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
2018-01-30 23:41:04 -08:00
Nikolaj Bjorner
5a2b072ddf
working on completing ATE/ALA for acce and abce
...
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
2018-01-29 20:32:06 -08:00
Nikolaj Bjorner
829c140087
ensure that bca takes also lemmas into account
...
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
2017-10-27 15:40:25 -07:00
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
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
8b4f3ac6f0
fix drat checker
...
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
2017-02-10 18:04:54 -05:00
Nikolaj Bjorner
61ade5e6cb
tune cardinality solver for cache misses
...
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
2017-02-06 20:57:08 -08:00
Nikolaj Bjorner
6a3f75822d
fix format bug (issue 126) and smaller nits in sat solver (const annotation, disable elimination of external or already elimianted variables)
...
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
2014-10-04 18:35:18 -07:00
Leonardo de Moura
c66b9ab615
Reorganizing the code
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2012-10-20 15:30:42 -07:00