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77 Commits

Author SHA1 Message Date
Laurent Perron
64230c6423 [CP-SAT] more work on 2d packing; fix bugs 2024-04-16 16:17:44 +02:00
Laurent Perron
c574b2661b [CP-SAT] feature parity on old precedence code and the new linear propagator 2024-04-05 11:35:18 +02:00
Laurent Perron
32bffd90d5 [CP-SAT] improve no_overlap_2d propagation; improve linear propagator + precedences + disjunctive connection; change the way maximization is implemented in python 2024-03-29 15:05:05 +01:00
Laurent Perron
29df35d3d7 [CP-SAT] improve diffn and linear loading 2024-03-26 12:35:12 +01:00
Laurent Perron
8d4b32967c [CP-SAT] cleanup diffn propagation; remove dead code 2024-01-31 14:44:02 +01:00
Laurent Perron
e9c81911c4 [CP-SAT] memory optimizations; improve no_overlap_2d; change default parameters 2024-01-10 16:42:04 +01:00
Mizux Seiha
a76bf1c5dd bump license boilerplate 2024-01-04 13:43:15 +01:00
Laurent Perron
044bc5ebce speed up sat scheduling code 2023-10-25 17:05:22 +02:00
Laurent Perron
f1bbd650ab [CP-SAT] add automatic cast Literal -> LiteralIndex; implement general division where the denominator can have any domain that does not contain 0 2023-10-12 10:06:27 +02:00
Laurent Perron
b8f224a8e1 [CP-SAT] tweak default search; improve scheduling cuts; move no_overlap_2d cuts in its own file; improve feasibility_jump; improve and speedup presolve 2023-09-21 13:07:09 +02:00
Laurent Perron
7d0d173a0f [CP-SAT] optimize feasibility jump; optimize linear presolve; better presolve logging; fix #3917; rewrite and simplify search heuristics code 2023-09-13 18:16:28 +02:00
Laurent Perron
407c9bb5dc [CP-SAT] fix overflow in presolve, check failed in feasibility_jump; remove obsolete macro 2023-08-30 10:04:11 -04:00
Laurent Perron
fa6883d544 mostly cleaning: remove integral_types.h and basictypes.h 2023-08-24 14:52:54 +02:00
Laurent Perron
224a38f87f cleanup code 2023-05-24 11:42:11 +02:00
Laurent Perron
f28ee9a594 fix shared worker trees; experimental LS code (just starting). 2023-03-22 19:37:00 +01:00
Laurent Perron
4fd92d3075 [CP-SAT] fix wrong optimal on unison 2023-02-20 17:00:17 +01:00
Laurent Perron
0945e9a6fb [CP-SAT] export num integers in the stats; optimize large linear constraints 2023-02-16 15:31:27 +01:00
Laurent Perron
806fcd185e CP-SAT optimize LinMax propagator; linear constraint; adapt pybind11 to new protobuf API 2023-01-27 16:53:53 +01:00
Laurent Perron
c08b48d25b [CP-SAT] improve oveflow detection in cuts; fix fingerprint; add objective_lb_search 2022-12-12 17:19:20 +01:00
Laurent Perron
ba53ce319b [CP-SAT] fix experimental linear code; indent; do not create lb_tree_search when model does not contain objective; fix slow termination 2022-09-27 18:04:47 +02:00
Laurent Perron
500cc2c701 [CP-SAT] polish scheduling code; add experimental new linear propagator 2022-09-23 18:09:18 +02:00
Laurent Perron
9931205f7c [CP-SAT] prepare for reservoir with variable demand; internal tweakes 2022-09-09 16:48:39 +02:00
Laurent Perron
87ca4f58ad [CP-SAT] bump license years; fix scheduling cuts; improve lb_tree_search 2022-06-16 15:21:00 +02:00
Laurent Perron
1deadc71d7 [CP-SAT] Improve scheduling lns; use linearized energy in cumulative_energy; more presolve with linear + at_most/exactly one constraints; validate a few more parameters 2022-05-31 15:40:47 +02:00
Laurent Perron
8fe2df9a18 [CP-SAT] regenerates all includes; improve core solver when the objective is pseudo-boolean 2022-02-15 18:00:11 +01:00
Laurent Perron
321d02c17c more strong integer types; use them in CP-SAT; polish shaving code; remove 1 overflow in cuts 2022-02-07 14:31:18 +01:00
Laurent Perron
068a71104a [CP-SAT] fix cumulative presolve; use strong_index 2022-02-04 14:20:08 +01:00
Corentin Le Molgat
4defaa23ed Export strong_int.h 2022-01-31 18:44:25 +01:00
Laurent Perron
3b745ab2c1 [CP-SAT] tweak to lb_tree_search 2021-11-04 18:58:34 +01:00
Laurent Perron
34b26eb5b0 [CP-SAT] reorganize linear code; tweak lb_tree_search code 2021-10-29 14:02:25 +02:00
Laurent Perron
9a5986631e [CP-SAT] improve modulo propagator 2021-10-28 15:44:12 +02:00
Laurent Perron
bab11deddf [CP-SAT] implement proper modulo propagator (with fixed mod) 2021-10-27 20:56:28 +02:00
Laurent Perron
99a06cf328 [CP-SAT] remove division expansion; implement general division propagator; improve internal APIs; fix bug and simplify code on lb_tree_search 2021-10-27 13:22:27 +02:00
Laurent Perron
93c7e252eb [CP-SAT] Cleanup propagator API 2021-10-25 16:30:57 +02:00
Laurent Perron
703f4c52d6 fix 2021-09-29 16:36:42 +02:00
Laurent Perron
6758c73d2f fix 2021-09-29 16:18:52 +02:00
Laurent Perron
1c2519dff5 add experimental energy info on the cumulative constraints; use it in cuts 2021-06-29 17:16:44 +02:00
Laurent Perron
8f307d1483 [CP-SAT] Fix wrong unsat; reduce model copy in LNS 2021-04-08 18:26:14 +02:00
Mizux Seiha
8bb54b04ef Bump Copyright to 2021 
FYI:
find ortools \( -type d -name .git -prune \) -o -type f -print0 | xargs -0 sed -i 's/\(Copyright 2010\)-2018/\1-2021/g'
 2021-04-01 21:00:53 +02:00
Corentin Le Molgat
a40143cdd2 cpp: Migrate int64 to int64_t 2021-04-01 20:20:43 +02:00
Laurent Perron
bad5c2032b int64 -> int64_t 2021-03-04 18:26:01 +01:00
Laurent Perron
b7d2104898 fix 2 sat bugs 2020-11-25 22:38:26 +01:00
Laurent Perron
7ed855af90 remove near zero terms when converting MIP models for CP-SAT; add small presolve, and root node propagation 2020-11-16 17:01:21 +01:00
Corentin Le Molgat
e4caaf96bc format file forcing the left alignment 2020-10-29 14:25:39 +01:00
Mizux Seiha
20d0496bfb reapply google format 2020-10-23 00:45:17 +02:00
Laurent Perron
a4258f2bdf switch flags setters and getters to the absl format 2020-10-21 00:21:54 +02:00
Laurent Perron
bcb7b3073d large synchro with internal code: linear solver: introduce intermediate SCIP layer called gscip; sat: more work on slow propagation detection; base: remove statusor, use abseil version; constraint solver: more work on internal local search 2020-10-18 16:38:25 +02:00
Laurent Perron
484aafb903 A few fixes on CP-SAT; work on scheduling LP cuts 2020-10-01 18:08:34 +02:00
Laurent Perron
456a73d213 improve cut numerical precision; speed up presolve; fix bug with inverse constraint expansion 2020-02-03 16:21:57 +01:00
Laurent Perron
45a04053e4 polish integer reasons 2020-01-20 10:51:53 +01:00