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17706 commits 23 branches 48 tags 157 MiB
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2933 commits

Author SHA1 Message Date
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
Nuno Lopes b9a87e493b minor code simplifications 2023-03-05 19:08:41 +00:00
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 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 755b517001 fix #6600 
ensure that semantics of last-indexof(t,"") = len(t)
 2023-02-19 14:02:37 -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 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 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 ac068888e7 add trichotomy for sequence comparison. #6586 2023-02-16 08:59:55 -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 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
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 1b0c76e3f0 fixes to mbqi in the new core based on #6575 2023-02-10 16:56:06 -08:00
Nikolaj Bjorner 02d48adae5 fix #6573 2023-02-08 08:24:52 -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 30fa37e393 fix warnings 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2023-02-01 10:31:34 -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 91d6082f2f Move modular interval to interval directory 2023-01-27 17:55:36 -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 d4ca7e5374 #6555 2023-01-26 21:39:52 -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 eac7d7576f force to_fp to disambiguate +zero and -zero, #6548, filter unsupported on relevancy 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2023-01-24 12:29:42 -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 4601d1d664 fix #6550 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2023-01-24 03:37:09 -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