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18597 commits 49 branches 51 tags 174 MiB
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161 commits

Author SHA1 Message Date
Nikolaj Bjorner
ea44c110bb gc expressions in the scope of updates, not old expressions 2023-12-18 20:08:29 -08:00
Nikolaj Bjorner
13be3c3fbb reset model converter between rounds to elim-unconstrained. 2023-12-18 16:57:52 -08:00
Nikolaj Bjorner
bb99f44214 fix bugs in elim-unconstr2 and fix bugs in intblast_solver 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2023-12-17 17:42:55 -08:00
Bruce Mitchener
e90a844508
Use override more. (#7059) 2023-12-15 08:44:57 +00:00
Nikolaj Bjorner
8fac89cdcc enable more simplification in case inequality triggers a change. 2023-10-21 19:58:39 -07:00
Nikolaj Bjorner
b87a91379c fix #6894 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2023-09-14 17:14:14 -07:00
Nikolaj Bjorner
50d76a2fe3 fix #6894 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2023-09-14 17:14:14 -07:00
Nikolaj Bjorner
5e3df9ee77
Arith min max (#6864) 
* prepare for dependencies

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* snapshot

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* more refactoring

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* more refactoring

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* build

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* pass in u_dependency_manager

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* address NYIs

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* more refactoring names

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* eq_explanation update

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* add outline of bounds improvement functionality

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* fix unit tests

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* remove unused structs

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* more bounds

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* more bounds

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* convert more internals to use u_dependency instead of constraint_index

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* convert more internals to use u_dependency instead of constraint_index

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* remember to push/pop scopes

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* use the main function for updating bounds

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* na

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* na

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* remove reset of shared dep manager

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* disable improve-bounds, add statistics

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

---------

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2023-08-19 17:44:09 -07:00
Nikolaj Bjorner
5b2519d7a3 #6523 
attach original variable to pb expression.
 2023-08-01 08:41:26 -07:00
Nikolaj Bjorner
f4b87b3763 fix memory smash in euf completion 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2023-07-05 13:04:49 -07:00
Nikolaj Bjorner
ac00306355 fix context simplification 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2023-06-09 11:30:56 -07:00
Nikolaj Bjorner
d0085b41c1 disable breaking change 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2023-06-09 11:15:54 -07:00
Nikolaj Bjorner
555ccc8aab simplify bounds by subsumption checks 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2023-06-09 10:21:45 -07:00
Nikolaj Bjorner
2e441e38c9 fix #6713 fix #6714 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2023-05-08 12:24:20 -07:00
Nikolaj Bjorner
a849a29b4f fix #6659 2023-03-31 10:31:18 -07:00
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
d1c7ff1a36 add unconstrained elimination for sequences 2023-03-20 17:07:04 +01:00
Nikolaj Bjorner
42076a3c13 bug fixes to new core, elim_predicates and elim_unconstrained 2023-03-05 22:26:37 -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
94b79eefea add back max_occs parameter dependency to solve-eqs 2023-03-01 20:40:22 -08:00
Nikolaj Bjorner
027770930e fix bug in quasi macro identification: require quantifiers 2023-03-01 17:03:15 -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
Nikolaj Bjorner
0d05104d8c remove unused field 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2023-02-02 19:33:23 -08:00
Nikolaj Bjorner
2e068e3f56 add simplifiers to .net API 2023-02-02 17:41:00 -08:00
Nikolaj Bjorner
38d526ee45 fix warning 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2023-02-01 10:18:14 -08:00
Nikolaj Bjorner
ebc2cd572b fix build 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2023-01-31 14:53:04 -08:00
Nikolaj Bjorner
88bf3c6e51 check if trail is empty to avoid collecting variables 2023-01-31 13:35:43 -08:00
Nikolaj Bjorner
8495be11f9 add shortcut filter to avoid traversing model reconstruction trail if there are no intersections with model 2023-01-31 13:34:52 -08:00
Nikolaj Bjorner
d263b373ed update release notes 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2023-01-31 12:19:33 -08:00
Nikolaj Bjorner
6022c17131 Add simplification customization for SMTLIB2 
Add the ability to customize incremental pre-processing simplification for the SMTLIB2 front-end. The main new capability is to use pre-processing tactics in incremental mode that were previously not available. The main new capabilities are
- solve-eqs
- reduce-args
- elim-unconstrained
There are several more. Documentation and exposed simplifiers are populated incrementally. The current set of supported simplifiers can be inspected by using z3 with the --simplifiers flag or referring to https://microsoft.github.io/z3guide/docs/strategies/simplifiers

Some pending features are:
- add the ability to update parameters to simplifiers similar to how tactics can be controlled using parameters.
- expose simplification solvers over the binary API.
 2023-01-30 22:38:51 -08:00
Nikolaj Bjorner
dd0decfe5d create simplifier_solver wrapper to supply simplifier layer 
move sat_smt_preprocess to solver
fix bugs in model_reconstruction_trail for dependency replay

This is a preparatory step for exposing pre-processing as tactics.
 2023-01-30 16:12:25 -08:00
Nikolaj Bjorner
4ffe3fab05 fix build 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2023-01-28 21:51:51 -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
0f3c56213e move dominator simplifier functionality to rewriter and simplifier, move bv_bounds simplifier functionality to simplifier 2023-01-27 17:11:48 -08:00
Nikolaj Bjorner
9e2ec9d018 add stubs for proof production in elim_unconstrained 2023-01-25 13:32:51 -08:00
Nikolaj Bjorner
b3de7ac595 remove passing proof parameter to expr-inverter 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2023-01-25 11:15:09 -08:00
Nikolaj Bjorner
f100d2f4de add contextual simplification to bv-bounds-tactic 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2023-01-24 17:49:55 -08:00
Nikolaj Bjorner
47c7ed3b17 update ml example to 64 bit 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2023-01-24 04:33:52 -08:00
Nikolaj Bjorner
15d853dc04 add trail to avoid stale references in expr2var 2023-01-24 04:15:52 -08:00
Nikolaj Bjorner
3032c9315d handle to-real in variable mapping 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2023-01-23 14:31:24 -08:00
Nikolaj Bjorner
d9f9cceea4 use intervals for tracking bounds on arithmetic variables 
leverage interval propagation for bounds.
merge functionality with propagate-ineqs tactic
remove the new propagate-bounds tactic and instead use propagate-ineqs
 2023-01-23 14:13:03 -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
3b5ae285d9 add outline for interval reasoning 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2023-01-22 23:28:36 -08:00
Nikolaj Bjorner
db79346ef7 Add new tactic bound-simplifier for integer-based bit-vector reasoning. 2023-01-22 22:07:28 -08:00
Nikolaj Bjorner
021ef699af detect bounds from mod 2023-01-22 14:40:19 -08:00
Nikolaj Bjorner
7368f9f7d3 increase build version, better propagation in euf-egraph, handle assumptions in sat.smt 
- increase build version to 4.12.1. This prepares updated release for MacOs-11 build on x86
- move literal propagation mode in euf-egraph to a callback and traversal of equivalence class. Track antecedent by newest equality instead of root. This makes equality propagation to literals have similar behavior as in legacy solver and appears to result in a speedup (10% fewer conflicts on QF_UF/QG-classification/qg5/iso_icl478.smt2 in preliminary testing)
- fix interaction of pre-processing and assumptions. Pre-processing has to freeze assumption literals so they don't get eliminated. This is similar to dependencies that are already frozen.
 2023-01-17 14:07:07 -08:00
Nikolaj Bjorner
d5fde2e578 #6538 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2023-01-15 15:58:29 -05:00