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Author SHA1 Message Date
Nikolaj Bjorner bb44b91e45 fix #6677 2023-04-10 15:11:10 -07:00
Clemens Eisenhofer 98d3fabc24
Bugfix relevancy propagation + UP (old core) (#6678) 
* Some UP bugfixes in the new core

* Bugfix relevancy propagation + UP (old core)

* Revert smt_context.cpp
 2023-04-10 12:57:59 -07:00
Nikolaj Bjorner 4a142b0f81 fix #6623 2023-04-09 21:10:24 -07:00
Nikolaj Bjorner e6ea81546e fix #6662 2023-04-08 17:14:39 -07:00
Nikolaj Bjorner af9c760a68 fix #6670 2023-04-08 16:55:23 -07:00
Nikolaj Bjorner ccb250c32b fix #6671 2023-04-08 16:39:40 -07:00
Clemens Eisenhofer 7b513b4a40
Some UP bugfixes in the new core (#6673) 2023-04-08 12:50:46 -07:00
Nikolaj Bjorner 84b9204616 inherit and reset rlimit counter on children limits 
addresses rlimit leak reported by @mtzguido
 2023-04-05 16:39:21 -07:00
Nikolaj Bjorner f8242c58dd fix regression from Grobner port 
- scan_for_linear returns true if it finds a new linear equation. It then should break GB.
- if scan_for_linear returns false, it should still allow try_modify_eqs.
This behavior was masked by requiring scan_for_linear to always be true before
allowing try_to_modify_eqs.

based on repro from Guido Martinez @mtzguido
 2023-04-04 22:29:22 -07:00
Nikolaj Bjorner 479f844200 fix #6661 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2023-04-02 11:14:20 -07:00
Nikolaj Bjorner def83ed26e fix #6661 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2023-04-02 11:13:37 -07:00
Nikolaj Bjorner 5b385bd2fe fix #6665 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2023-04-02 10:58:21 -07:00
Hari Govind V K 6324db207b
Only print func-decl names for indexed parameters (#6663) 2023-04-02 10:39:13 -07:00
Nikolaj Bjorner e0a066efa3 #6654 
fix reflexivity for tree-order
 2023-03-31 15:38:29 -07:00
Nikolaj Bjorner 7664429fda remove cast expression 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2023-03-31 12:51:23 -07:00
Nikolaj Bjorner a62e4b2893 extract multi-patterns when pattern can be decomposed 
deals with fluke regression for F* reported by Guido Martinez

Background:
The automatic pattern inference facility looks for terms that contains all bound variables of a quantifier. It may end up with a term that contains all bound variables but the extracted term can be simplified.

Example. The pattern

(ApplyTT (ApplyTT @x3!1 (ApplyTT @x4!0 (:var 1))) (ApplyTT @x4!0 (:var 0)))
can be decomposed into a multi-pattern
(ApplyTT @x4!0 (:var 1))) (ApplyTT @x4!0 (:var 0))
The multi-pattern may enable a quantifier instantiation while the original pattern does not. The multi-pattern should be preferred.

The regression showed up based on a change that should not be considered harmful but turned out to be noticeable.
The change was a simplification of and-or expressions based on sorting. This played with the case split queue used by F* (smt.case_split = 3) that uses a top-level case split of clauses to avoid redundant branches. The net effect was that without sorting, the benchmarks would always choose the opportune branch that enabled matching against the larger term. With sorting it would mostly choose inopportune branches.
 2023-03-31 12:45:51 -07:00
Nikolaj Bjorner a849a29b4f fix #6659 2023-03-31 10:31:18 -07:00
Nikolaj Bjorner 996e5b1755 fix #6655 2023-03-31 03:25:20 -07:00
Nikolaj Bjorner b386b84f34 #6658 2023-03-31 02:56:44 -07:00
권승완 6670807103
update ocaml binding to support more string apis (#6656) 2023-03-29 05:49:33 -07:00
Lev Nachmanson 130400d76e
Remove non feasible costs (#6653) 
* before rm lu

Signed-off-by: Lev Nachmanson <levnach@hotmail.com>

* rm get_column_in_lu_mode

* rm lu

Signed-off-by: Lev Nachmanson <levnach@hotmail.com>

* rm lu

Signed-off-by: Lev Nachmanson <levnach@hotmail.com>

* rm_lp

Signed-off-by: Lev Nachmanson <levnach@hotmail.com>

* rm_lu

* rm lu

* rm lu

Signed-off-by: Lev Nachmanson <levnach@hotmail.com>

* rm lu

Signed-off-by: Lev Nachmanson <levnach@hotmail.com>

* rm lu

* rm lu

Signed-off-by: Lev Nachmanson <levnach@hotmail.com>

* rm lu

Signed-off-by: Lev Nachmanson <levnach@hotmail.com>

* rm lu

* cleanup

* rm breakpoints

* rm dealing with doubles

* Revert "rm dealing with doubles"

This reverts commit 547254abe7.

* rm lu

Signed-off-by: Lev Nachmanson <levnach@hotmail.com>

* rm lu

* rm lu

* rm scaler

* rm square_sparse_matrix

* more cleanup

* rm dead code

* rp precise

* remove many methods dealing with double

Signed-off-by: Lev Nachmanson <levnach@hotmail.com>

* rm lu related fields from lp_core_solver_base.h

* remove dead code

Signed-off-by: Lev Nachmanson <levnach@hotmail.com>

* more dead code removal

* remove more dead code

* more dead code

* rm dead code

* more dead code

* fix lp_tst

* more dead code

* replace lp_assert(false) with UNREACHABLE

* rm non feas costs

Signed-off-by: Lev Nachmanson <levnach@hotmail.com>

* fix the build

Signed-off-by: Lev Nachmanson <levnach@hotmail.com>

---------

Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2023-03-28 08:55:52 -07:00
Nikolaj Bjorner fe348b84c9 fix #6652 2023-03-27 16:20:33 -07:00
Nikolaj Bjorner adec937296 fix #6650 2023-03-27 14:02:23 -07:00
Nikolaj Bjorner f366772f0c use field 'm' for streamlined representation 2023-03-27 14:02:22 -07:00
Patrick LaFontaine 0a59617bac
Fix Ocaml bindings FuncEntry to_string (#6639) 
Hello, I was looking at the different api string conversions for FuncEntry and I believe that the ml version is incorrect? Clearly we want the argument(`c`) to be comma separated from the accumulated string `p`. The current implementation just so happens to have most of the arguments separated, but the order is flipped and one of the commas is misplaced.
 2023-03-27 13:04:32 -07:00
Nikolaj Bjorner b4ad747e0b fix #6644 2023-03-27 09:00:38 -07:00
Nikolaj Bjorner 8a3a3dc91b fix #6648 2023-03-26 15:31:37 -07:00
Nikolaj Bjorner ce501e0b6e #6646 
- always enable special-relations theory to deal with default setting and push
- fix bugs related to equality and transitivity.
 2023-03-25 17:37:59 -07:00
Nikolaj Bjorner cd2ea6b703 add parameter access to C++ API 2023-03-25 18:14:08 +01:00
Nikolaj Bjorner 9ca0faa091 enable interactive example 2023-03-25 18:13:44 +01:00
Nikolaj Bjorner 50bd6efea4 fix #6624 2023-03-22 14:00:09 +01:00
Nikolaj Bjorner 03a44803b6 fix #6635 2023-03-22 13:38:02 +01:00
Nikolaj Bjorner 2683a2d6ed fix #6637 2023-03-22 08:49:33 +01:00
Nikolaj Bjorner 53ca65a62e fix unsound rewrite 2023-03-20 18:55:40 +01:00
Nikolaj Bjorner f075dc2882 remove experimental files 2023-03-20 17:07:48 +01:00
Nikolaj Bjorner 48de7c2da8 missing updates 2023-03-20 17:07:04 +01:00
Nikolaj Bjorner c6e3fb446a print lemmas2console faster 
- add option pp.no_lets (default = false) to print formulas without let (used by the low-level SMT2 printer).
- print lemmas2console faster by using the low level printer
 2023-03-20 17:07:04 +01:00
Nikolaj Bjorner a9e6e567b0 make generation of "some" Boolean value fair 2023-03-20 17:07:04 +01:00
Nikolaj Bjorner d1c7ff1a36 add unconstrained elimination for sequences 2023-03-20 17:07:04 +01:00
Nuno Lopes a0f3727e90 BV: add missing neg internalizer 
usually bvneg is eliminated during rewriting, but it can be left behind during e.g. a badly-timed timeout
 2023-03-12 19:26:47 +00:00
Declan Hwang cf4df08fd0
fix typo (#6628) 2023-03-09 09:29:30 -08:00
Bram V 1612b57e1a
Make all methods show in java API (#6626) 
* Make all methods show in java API

* Add final modifier to all generic methods
 2023-03-08 13:43:51 -08:00
igcontreras 4b3408696d
use uintptr_t instead of size_t (tptr) for portability (#6627) 2023-03-08 21:13:38 +00:00
Lev Nachmanson 8b0aa22631 replace lp_assert(false) with UNREACHABLE 2023-03-08 10:27:05 -08:00
Lev Nachmanson 3efe91c3e3 more dead code 2023-03-08 10:27:05 -08:00
Lev Nachmanson 1fb24ebc35 fix lp_tst 2023-03-08 10:27:05 -08:00
Lev Nachmanson 11eab94321 more dead code 2023-03-08 10:27:05 -08:00
Lev Nachmanson 13549aff66 rm dead code 2023-03-08 10:27:05 -08:00
Lev Nachmanson c6be67bf3b more dead code 2023-03-08 10:27:05 -08:00
Lev Nachmanson c8c0a00190 remove more dead code 2023-03-08 10:27:05 -08:00
Lev Nachmanson 748c75275f more dead code removal 2023-03-08 10:27:05 -08:00
Lev Nachmanson e430f28813 remove dead code 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2023-03-08 10:27:05 -08:00
Lev Nachmanson f6445891f3 rm lu related fields from lp_core_solver_base.h 2023-03-08 10:27:05 -08:00
Lev Nachmanson f351eb3ab2 remove many methods dealing with double 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2023-03-08 10:27:05 -08:00
Lev Nachmanson 9ec82632a3 rp precise 2023-03-08 10:27:05 -08:00
Lev Nachmanson 569f5be91f rm dead code 2023-03-08 10:27:05 -08:00
Lev Nachmanson f33f8c265e more cleanup 2023-03-08 10:27:05 -08:00
Lev Nachmanson 0fb65dea3f rm square_sparse_matrix 2023-03-08 10:27:05 -08:00
Lev Nachmanson 178135486c rm scaler 2023-03-08 10:27:05 -08:00
Lev Nachmanson 6eedbd4f35 rm lu 2023-03-08 10:27:05 -08:00
Lev Nachmanson e04e726f45 rm lu 2023-03-08 10:27:05 -08:00
Lev Nachmanson 2e9dc3d090 rm lu 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2023-03-08 10:27:05 -08:00
Lev Nachmanson d00fcc87c9 Revert "rm dealing with doubles" 
This reverts commit 547254abe7.
 2023-03-08 10:27:05 -08:00
Lev Nachmanson a4189186cc rm dealing with doubles 2023-03-08 10:27:05 -08:00
Lev Nachmanson 6201eda055 rm breakpoints 2023-03-08 10:27:05 -08:00
Lev Nachmanson 73224adc48 cleanup 2023-03-08 10:27:05 -08:00
Lev Nachmanson 377ceba6d5 rm lu 2023-03-08 10:27:05 -08:00
Lev Nachmanson 6132bf93f7 rm lu 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2023-03-08 10:27:05 -08:00
Lev Nachmanson bfe73c01a6 rm lu 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2023-03-08 10:27:05 -08:00
Lev Nachmanson 1da4c018e4 rm lu 2023-03-08 10:27:05 -08:00
Lev Nachmanson 62bd3bd1e6 rm lu 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2023-03-08 10:27:05 -08:00
Lev Nachmanson 5f03c93270 rm lu 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2023-03-08 10:27:05 -08:00
Lev Nachmanson 9a7c99da33 rm lu 2023-03-08 10:27:05 -08:00
Lev Nachmanson c251151d66 rm_lu 2023-03-08 10:27:05 -08:00
Lev Nachmanson 25f103db1a rm_lp 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2023-03-08 10:27:05 -08:00
Lev Nachmanson 527f0d1242 rm lu 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2023-03-08 10:27:05 -08:00
Lev Nachmanson a38be43264 rm lu 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2023-03-08 10:27:05 -08:00
Lev Nachmanson 97c1ba4641 rm get_column_in_lu_mode 2023-03-08 10:27:05 -08:00
Lev Nachmanson ea16f6608c before rm lu 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2023-03-08 10:27:05 -08:00
Hari Govind V K f7c9c9ef72
fix unsound slice criteria (#6625) 
* rename for readability

* bug fix #6617. Don't slice op args that are values
 2023-03-06 19:28:22 -08:00
Nikolaj Bjorner 42076a3c13 bug fixes to new core, elim_predicates and elim_unconstrained 2023-03-05 22:26:37 -08:00
Nuno Lopes b9a87e493b minor code simplifications 2023-03-05 19:08:41 +00:00
Lev Nachmanson 92fe8c5968 restore the previous state 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2023-03-03 18:30:17 -08:00
Lev Nachmanson ff1dc0424c rm lp_solver 2023-03-03 16:32:49 -08:00
Lev Nachmanson 5e4bca3d26 small removals 2023-03-03 15:58:25 -08:00
Lev Nachmanson 2dd30fa350 rm lp_primal_simplex 2023-03-03 15:44:50 -08:00
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 a44772424c more removals 2023-03-03 15:30:15 -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
Hari Govind V K 55d45e0c0c
bug fix. Prevent resetting gg stats #6062 (#6618) 2023-03-03 12:32:23 -08:00
Nikolaj Bjorner b82d177276 fix build 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2023-03-03 11:26:13 -08:00
Nikolaj Bjorner aa75ba8a6b remove parenthesis 2023-03-01 21:03:41 -08:00
Nikolaj Bjorner fd97be0e3e move sat.smt.proof.check_rup into solver.proof.check_rup #6616 2023-03-01 21:03:27 -08:00
Nikolaj Bjorner 94b79eefea add back max_occs parameter dependency to solve-eqs 2023-03-01 20:40:22 -08:00
Nikolaj Bjorner acd2eaa390 add (disabled) code path to enable nested conjunctions 
for experiments with disabling flat-and-or dependency
 2023-03-01 20:39:39 -08:00
Nikolaj Bjorner 46d37b6e30 fix #6615 
make rewriting exception safe (for cancelation).
The state during restart in smt_context is not exception safe.
 2023-03-01 17:30:07 -08:00
Nikolaj Bjorner 027770930e fix bug in quasi macro identification: require quantifiers 2023-03-01 17:03:15 -08:00
Nikolaj Bjorner 25d45a3500 fixes and tests for arith-sls 2023-02-28 17:40:09 -08:00
Nikolaj Bjorner e87fa1c299 remove stale file 2023-02-28 17:40:08 -08:00
Nikolaj Bjorner 79d47eb302 add preprocessor parameter whether to use bound simplifier 2023-02-28 17:40:08 -08:00
Nikolaj Bjorner 76aad689c6 Update smt_context_pp.cpp 
print units in statistics
 2023-02-28 17:40:08 -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
Julian Parsert 6e7d80633d
Documentation on how to add z3 to CMake project using FetchContent and documentation to recdef function. (#6613) 
* Added overloaded versions of context::recfun in the c++ api that allow for the declaration of recursive functions where the domain is given by a z3::sort_vector instead of an arity and sort*

* added documentation to recdef function

* added a section in the README-CMake.md that explains how z3 can be added to a CMake project as a dependency

---------

Co-authored-by: Julian Parsert <julian.parsert@uibk.ac.at>
 2023-02-28 11:44:21 -08:00
hgvk94 828fff9684 fix #6543. don't assume order on bindings 2023-02-23 17:35:55 -05:00
Nikolaj Bjorner 146f0eae06 wip - arith local search 2023-02-20 12:17:14 -08:00
Nikolaj Bjorner 4aa05b2b57 remove limiting error mode #6600 2023-02-20 12:16:43 -08:00
Nikolaj Bjorner 755b517001 fix #6600 
ensure that semantics of last-indexof(t,"") = len(t)
 2023-02-19 14:02:37 -08:00
Nikolaj Bjorner 0758c93086 fix #6591 
- add check for lambdas similar to as-array in context of quantifiers. MBQI is not a decision procedure for this combination and can then incorrectly conclude satisfiabiltiy.

Scenario

The formula contains assertions
 - bv = (map or (lambda ..) t)
 - forall y (not (select bv (pair s y)))

Since bv is extensionally equal to a term that depends on a lambda, MBQI cannot just take the current finite approximation of bv when checking the quantifier for satisfiability.
 2023-02-19 11:09:52 -08:00
Nikolaj Bjorner 6454e7fa3f apply rewriting if result of destructive equality resolution is simplified 2023-02-19 11:03:04 -08:00
Nikolaj Bjorner bc6037464d clean up build warnings 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2023-02-19 10:08:31 -08:00
Nikolaj Bjorner 9b6ac45e02 compile warnings 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2023-02-19 10:03:38 -08:00
Nikolaj Bjorner 6352340478 update do logging 2023-02-19 09:59:33 -08:00
Nikolaj Bjorner a6eed9f00c Update api.cpp 
fix test
 2023-02-18 18:43:20 -08:00
Nikolaj Bjorner cb81473260 add destructive equality resolution to the main simplifier. 2023-02-18 17:54:26 -08:00
Nikolaj Bjorner c0f80f92ba deal with compiler warnings (unused variables etc) 2023-02-18 17:53:37 -08:00
Nikolaj Bjorner 6092bf534c fix #6599 2023-02-18 14:18:02 -08:00
Nikolaj Bjorner daeaed1e82 revert debug only changes to sat-solver 2023-02-18 14:13:40 -08:00
Nikolaj Bjorner c5e33b79b5 wip - arith sls 
overhaul to tier inequalities with Boolean variables instead of literals
 2023-02-18 14:11:48 -08:00
Nikolaj Bjorner f66a082de9 fix #6595 2023-02-18 14:11:48 -08:00
Ding Fei 828ff98c77
fix tpl instantiation issue for mingw (#6597) 2023-02-17 09:26:45 -08:00
Nikolaj Bjorner bd10ddf6ae wip - local search - use dispatch model from bool local search instead of separate phases. 2023-02-16 09:17:11 -08:00
Nikolaj Bjorner ac068888e7 add trichotomy for sequence comparison. #6586 2023-02-16 08:59:55 -08:00
Nikolaj Bjorner 554a9e8efe fix #6346 2023-02-16 08:53:08 -08:00
Nikolaj Bjorner 7c08e53e94 fixes for #6590 2023-02-15 15:11:44 -08:00
Nikolaj Bjorner c1ecc49021 wip - local search - move to plugin model 2023-02-15 13:32:30 -08:00
Nikolaj Bjorner a1f73d3805 wip - local search - fix build 2023-02-15 08:48:37 -08:00
Nikolaj Bjorner 4f20b8e2ba wip - local search 2023-02-15 08:36:10 -08:00
Nikolaj Bjorner 8ce0c56ff5 fix #6590 2023-02-15 08:36:01 -08:00
Nikolaj Bjorner c2fe76569f remove dependency on bool-rewriter in hoist rewriter 
deal with regression reported in
cac5052685 (commitcomment-100606067)
and unit tests doc.cpp
 2023-02-14 17:48:02 -08:00
Nikolaj Bjorner a976b781a0 fix #6585 2023-02-14 15:33:17 -08:00
Nikolaj Bjorner 44fcf60a72 wip experiments with sls 2023-02-14 15:06:26 -08:00
Nikolaj Bjorner 9ce5fe707d track assumptions when parsing into a solver. This enables solver.from_file/solver.from_string to support assumptions/cores #6587 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2023-02-14 11:09:11 -08:00
Nikolaj Bjorner 3dc91de531 fix #6582 2023-02-13 13:21:30 -08:00
Nikolaj Bjorner 2b77012993 fix build 2023-02-13 08:36:12 -08:00
Nikolaj Bjorner 52804b5c8f save on dtt 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2023-02-13 08:29:32 -08:00
Nikolaj Bjorner 7956cf1201 annotate arith_sls 2023-02-12 20:55:44 -08:00
Nikolaj Bjorner bb81bc5452 fix #6580 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2023-02-12 20:21:53 -08:00
Nikolaj Bjorner 102eee77dc patch regressions 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2023-02-12 20:12:01 -08:00
Nikolaj Bjorner cac5052685 fixes related to #6577 
- enforce elim-and in bool-rewriter when invoking hoisting.
- make cnf tactic more resilient to non-normalized input.
- enable eliminate predicates on ground formulas
 2023-02-12 13:43:44 -08:00
Walden Yan ede9e5ffc2
[WIP] More TS Binding Features (#6412) 
* feat: basic quantfier support

* feat: added isQuantifier

* feat: expanded functions

* wip: (lambda broken)

* temp fix to LambdaImpl typing issue

* feat: function type inference

* formatting with prettier

* fix: imported from invalid module

* fix isBool bug and dumping to smtlib

* substitution and model.updateValue

* api to add custom func interps to model

* fix: building

* properly handling uint32 -> number conversion in z3 TS wrapper

* added simplify

* remame Add->Sum and Mul->Product

* formatting
 2023-02-11 15:48:29 -08:00
Nikolaj Bjorner 5e30323b1a wip - bounded local search for arithmetic 2023-02-11 15:46:39 -08:00
Nikolaj Bjorner 4b2c166e8b fixes to build 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2023-02-11 10:19:24 -08:00
Nikolaj Bjorner 7bef2f3e6f wip - local search for euf/arithmetic 2023-02-11 09:33:43 -08:00
Nikolaj Bjorner 46c8d78ece fixes for #6577 
- the literal false should not appear in clauses
- the literal true forces a tautology
- fix early return in is_cnf check. It should check all clauses for nested Booleans.
 2023-02-11 09:33:42 -08:00
Nikolaj Bjorner d22e4aa525 wip - integrating arithmetic local search 2023-02-11 09:33:42 -08:00
Nikolaj Bjorner 1b0c76e3f0 fixes to mbqi in the new core based on #6575 2023-02-10 16:56:06 -08:00