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20035 commits 44 branches 52 tags 176 MiB
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1446 commits

Author SHA1 Message Date
Lev Nachmanson
8989e10e71 rm lp_dual_simplex 2023-03-03 15:41:30 -08:00
Lev Nachmanson
d2e8297d41 remove includes of lp_dual_simplex 2023-03-03 15:38:47 -08:00
Lev Nachmanson
2ec09944d7 removals 2023-03-03 15:32:44 -08:00
Lev Nachmanson
8db2f1409b lp_dual_simplex.cpp removed from CMakeLists.txt 2023-03-03 15:27:57 -08:00
Lev Nachmanson
cd24c99739 remove a lp_primal_simplex.cpp from CMakeLists 2023-03-03 15:26:06 -08:00
Lev Nachmanson
f986ac6a75 remove mps_reader 2023-03-03 14:50:10 -08:00
Nikolaj Bjorner
5974a2dc58 remove m_b from lar_core_solver 
the column vector is pure overhead for the way the lar solver uses lp.
Some other solver modules use column vectors b and integrate with the lp_core_solver_base. The interaction model should be reviewed.
Unused solvers should be removed to make it easier to maintain this code.
 2023-02-28 17:40:08 -08:00
Nikolaj Bjorner
7c08e53e94 fixes for #6590 2023-02-15 15:11:44 -08:00
Nikolaj Bjorner
8ce0c56ff5 fix #6590 2023-02-15 08:36:01 -08:00
Nikolaj Bjorner
a976b781a0 fix #6585 2023-02-14 15:33:17 -08:00
Nikolaj Bjorner
3dc91de531 fix #6582 2023-02-13 13:21:30 -08:00
Nikolaj Bjorner
741634b703 compiler warning fix 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2023-02-02 19:26:51 -08:00
Nikolaj Bjorner
682e868129 initialize field 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2023-02-01 10:18:14 -08:00
Nikolaj Bjorner
0f86a00229 use setter method to easier track updates to settings. 2023-02-01 10:18:14 -08:00
Nikolaj Bjorner
304b316314 move bounded division lemmas to nla solver/ nla_divisions. 2023-01-30 11:11:04 -08:00
Nikolaj Bjorner
03ca330926 fix division filter 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2023-01-30 08:23:17 -08:00
Nikolaj Bjorner
2c4a9c2f5c fix division filter 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2023-01-30 08:20:26 -08:00
Nikolaj Bjorner
8e37e2f913 handle non-linear division axioms, consolidate backtracking state in nla_core 
this update enables new incremental linear axioms based on division terms.
It also consolidates some of the backtracking state in nla_core / emons to use stack traces instead of custom backtracking state.
 2023-01-29 17:22:57 -08:00
Nikolaj Bjorner
8ea49eed8e convert reduce-args to a simplifier 
- convert reduce-args to a simplifier. Currently exposed as reduce-args2 tactic until the old tactic code gets removed.
- bug fixes in model_reconstruction trail
  - allow multiple defs to be added with same pool of removed formulas
  - fix tracking of function symbols instead of expressions to filter replay
- add nla_divisions to track (cheap) divisibility lemmas.
-
 2023-01-28 20:12:14 -08:00
Nikolaj Bjorner
ae24b73b19 bugfixes to incremental linearization for expanding power 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2023-01-26 21:19:45 -08:00
Nikolaj Bjorner
8be43ca68b reshuffle pre-conditions for powers 2023-01-25 13:51:19 -08:00
Nikolaj Bjorner
e41dd91893 add module for handling axioms for powers 2023-01-25 13:34:13 -08:00
Nikolaj Bjorner
2ae476416c initial outline of exponentiation 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2023-01-23 17:38:34 -08:00
Nikolaj Bjorner
eb751bec4c fix riscv/aarch/powerpc build warnings 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2023-01-22 23:57:59 -08:00
Nikolaj Bjorner
806a4772bc revert effect of filtering unsupported 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2023-01-20 17:28:24 -08:00
Nuno Lopes
a2cc504d4a remove a couple more std::endl 2023-01-03 09:49:58 +00:00
Nikolaj Bjorner
8981d32caf
#6481 2022-12-08 07:06:27 -08:00
Nikolaj Bjorner
b758d5b2b1 wip - proof checking, add support for distinct, other fixes 2022-10-17 17:51:10 -07:00
Nikolaj Bjorner
a6a5985f8e fix #6341 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-09-13 17:19:48 -07:00
Nikolaj Bjorner
8cb118235a add missing status case for cancelation 2022-08-30 09:43:10 -07:00
Nikolaj Bjorner
6f2a6da600 address unused variable warnings 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-08-28 18:50:54 -07:00
Bruce Mitchener
6ba9ada1e2
Fix typos. (#6291) 2022-08-21 12:40:07 -07:00
Bruce Mitchener
5014b1a34d Use = default for virtual constructors. 2022-08-05 18:11:46 +03:00
Bruce Mitchener
1d9345c3de Fix typos. 2022-08-05 07:40:50 +03:00
Bruce Mitchener
a89be68050 Use false instead of 0. 2022-08-01 18:28:07 +03:00
Bruce Mitchener
1eb84fe4b9
Mark override methods appropriately. (#6207) 2022-07-29 23:29:15 +02:00
Bruce Mitchener
3e38bbb009
Make sure all headers do #pragma once. (#6188) 2022-07-23 10:41:14 -07:00
Nikolaj Bjorner
6c5747a80e guard against lemmas that are already true 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-07-15 10:03:31 -07:00
Nikolaj Bjorner
b29cdca936 integrate factorization to Grobner 2022-07-14 21:24:27 -07:00
Nikolaj Bjorner
7c177584f3 add propagators to grobner 2022-07-14 15:45:07 -07:00
Nikolaj Bjorner
981c82c814 fix initialization order 2022-07-13 18:11:18 -07:00
Nikolaj Bjorner
894fb836e2 fix build break (debug assertion) and isolate gomory functionality 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-07-13 17:26:56 -07:00
Nikolaj Bjorner
b81f70f6fc split nla_grobner to separate file 2022-07-13 13:05:57 -07:00
Nikolaj Bjorner
8900db527f add diagnostics for grobner 2022-07-12 20:49:54 -07:00
Nikolaj Bjorner
316ed778e0 Tune Grobner equations 
\brief convert p == 0 into a solved form v == r, such that
   v has bounds [lo, oo) iff r has bounds [lo', oo)
   v has bounds (oo,hi]  iff r has bounds (oo,hi']

   The solved form allows the Grobner solver identify more bounds conflicts.
   A bad leading term can miss bounds conflicts.
   For example for x + y + z == 0 where x, y : [0, oo) and z : (oo,0]
   we prefer to solve z == -x - y instead of x == -z - y
   because the solution -z - y has neither an upper, nor a lower bound.

The Grobner solver is augmented with a notion of a substitution that is applied before the solver is run.
 2022-07-11 16:14:26 -07:00
Nikolaj Bjorner
b68af0c1e5 working on reconciling perf for arithmetic solvers 
this update integrates inferences to smt.arith.solver=6 related to grobner basis computation and handling of div/mod axioms to reconcile performance with smt.arith.solver=2.

The default of smt.arth.nl.grobner_subs_fixed is changed to 1 to make comparison with solver=2 more direct.

The selection of cluster equalities for solver=6 was reconciled with how it is done for solver=2.
 2022-07-11 07:38:51 -07:00
Nuno Lopes
73a24ca0a9 remove '#include <iostream>' from headers and from unneeded places 
It's harmful to have iostream everywhere as it injects functions in the compiled files
 2022-06-17 14:10:19 +01:00
Nikolaj Bjorner
3d00d1d56b prepare for equality propagation from Grobner basis 
Attempt to remedy performance regressions from the new solver core for NLA. It misses easy lemmas, presumably due to weaker bounds information.
 2022-06-14 09:51:07 -07:00
Nikolaj Bjorner
b629960afb proof format 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-06-06 07:18:33 -07:00
Nikolaj Bjorner
da3f31697b fix proof checking for bounds propagation 2022-05-30 10:18:16 -07:00