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17276 commits 23 branches 48 tags 157 MiB
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2771 commits

Author SHA1 Message Date
Nikolaj Bjorner 771157696b new simplifier/tactic 
eliminate_predicates finds macros and eliminates predicates from formulas as pre-processing.
 2022-11-19 18:51:20 +07:00
Nikolaj Bjorner d735faae4e add isolated hide/add model converter functions 2022-11-19 18:50:37 +07:00
Nikolaj Bjorner a81a5ec68c add virtual function requirement to dependent_expr_state 2022-11-19 18:46:31 +07:00
Nikolaj Bjorner dcc995f0e5 code simplification 2022-11-19 18:45:54 +07:00
Nikolaj Bjorner 41b40c3a51 remove dead code 2022-11-19 18:45:07 +07:00
Nikolaj Bjorner c2e9016d04 display model-add parameters in correct order 2022-11-19 18:44:52 +07:00
Nikolaj Bjorner ba68652c72 add destructive equality resolution to existentials 2022-11-19 18:43:46 +07:00
Nikolaj Bjorner 7da91f4313 allow printing declarations with reverse variable order 2022-11-19 18:43:21 +07:00
Nikolaj Bjorner 59b7845c7d reset visited (fast mark) to not clash with occurs 2022-11-17 17:36:21 +09:00
Nikolaj Bjorner 6662afdd26 perf improvements to solve-eqs and euf-completion 2022-11-16 22:15:02 -08:00
Nikolaj Bjorner 2c7799939e wip - tuning and fixes to euf-completion 2022-11-16 03:47:38 -08:00
Nikolaj Bjorner 98fc8c99db add shortcut to equality mk utility 2022-11-16 03:47:01 -08:00
Nikolaj Bjorner 55ab7778f4 fix perf bug in new solve_eqs. 2022-11-16 03:46:17 -08:00
Nikolaj Bjorner d70dbdad50 wip euf-completion - debugging 2022-11-15 20:17:39 -08:00
Nikolaj Bjorner 255414f4a9 fix regression crash 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-11-15 11:20:12 -08:00
Nikolaj Bjorner 9845c33236 add shortcuts in rewriter, eliminate redundancies in dependent_expr tactic 2022-11-15 09:13:13 -08:00
Nikolaj Bjorner 48c0f8694f euf-completion bug fix, streamline name to solve_eqs 2022-11-14 20:01:00 -08:00
Nikolaj Bjorner 3eeb59db34 fix #6451 missing occurrence marking when there is an unsafe equality already 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-11-14 19:23:27 -08:00
Nikolaj Bjorner 95e07ffe8e disable unsound context equality solving 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-11-14 19:14:51 -08:00
Nikolaj Bjorner 6297c001ee remove legacy solve_eqs_tactic entirely 
also, bug fixes to elim_unconstrained (elim_uncnstr2) which is to replace legacy tactic for eliminating unconstrained constants.
 2022-11-14 18:57:16 -08:00
Nikolaj Bjorner 3d2bf13577 streamline statistics, fix bug in updating goals 2022-11-13 20:30:00 -08:00
Nikolaj Bjorner ce6cfeaa68 fix bug in euf-completion relating to missed normalization 2022-11-13 18:01:17 -08:00
Nikolaj Bjorner 3fa81d6527 bug fixes to elim-uncnstr2 tactic 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-11-13 13:25:19 -08:00
Nikolaj Bjorner 38cde14e08 wip missing updates 2022-11-13 12:10:43 -08:00
Nikolaj Bjorner 196788a091 bug fix for equality solving 2022-11-13 12:09:56 -08:00
Nikolaj Bjorner ce76e3138d streamlining expr-inverter code 2022-11-13 11:48:32 -08:00
Nikolaj Bjorner 3d570aaa0a add missing process_eq 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-11-12 18:43:57 -08:00
Nikolaj Bjorner 0b83732b82 missing override specifier 2022-11-12 18:35:41 -08:00
Nikolaj Bjorner 343603f643 fix build 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-11-12 18:34:04 -08:00
Nikolaj Bjorner 9d09064ad0 add comments to elim_unconstrained and remove unused function 2022-11-12 18:01:38 -08:00
Nikolaj Bjorner efbe0a6554 wip - updated version of elim_uncstr_tactic 
- remove reduce_invertible. It is subsumed by reduce_uncstr(2)
- introduce a simplifier for reduce_unconstrained. It uses reference counting to deal with inefficiency bug of legacy reduce_uncstr. It decomposes theory plugins into expr_inverter.

reduce_invertible is a tactic used in most built-in scenarios. It is useful for removing subterms that can be eliminated using "cheap" quantifier elimination. Specifically variables that occur only once can be removed in many cases by computing an expression that represents the effect computing a value for the eliminated occurrence.

The theory plugins for variable elimination are very partial and should be augmented by extensions, esp. for the case of bit-vectors where the invertibility conditions are thoroughly documented by Niemetz and Preiner.
 2022-11-12 17:56:45 -08:00
Nikolaj Bjorner 3faca52c40 re-enable new solve_eqs with bug fixes 2022-11-08 14:17:17 -08:00
Nikolaj Bjorner 3a37cfca30 switch to solve_eqs2 tactic 2022-11-08 12:23:36 -08:00
Nikolaj Bjorner f769e2f1f6 have bool rewriter use flat_and_or, and integrate hoist rewriter 2022-11-08 12:21:50 -08:00
Nikolaj Bjorner 238ea0a264 add shorthands for concatentation 2022-11-08 12:21:25 -08:00
Nikolaj Bjorner 3a4b8e2334 add rewrite rules to bv-rewriter 2022-11-08 12:20:51 -08:00
Nikolaj Bjorner a34701471f clean up hoist rewriter 2022-11-08 12:20:25 -08:00
Nikolaj Bjorner cbc5b1f4f6 have theory_recfun use recursive function discriminator to control when it is enabled 2022-11-06 12:09:45 -08:00
Nikolaj Bjorner 8ff1e44a95 add discriminator to whether context contains recursive functions to avoid enabling recursive function solver when there are just macros 2022-11-06 11:58:21 -08:00
Nikolaj Bjorner a4c2a2b22c use ast_util::mk_not to avoid redundant double negations during nff 2022-11-06 11:57:46 -08:00
Nikolaj Bjorner 78f9e6b31a extend error type message with more information - display the arguments that are passed 2022-11-06 11:57:21 -08:00
Nikolaj Bjorner d8133a47c2 Update solve_eqs.cpp 2022-11-05 22:47:46 -07:00
Nikolaj Bjorner 6c12aaad74 wip - testing solve-eqs2, added as tactic 2022-11-05 22:42:59 -07:00
Nikolaj Bjorner 4d8860c0bc wip - adding context equation solver 
the solve_eqs_tactic is to be replaced by a re-implementation that uses solve_eqs in the simplifiers directory.
The re-implementation should address efficiency issues with the previous code.
At this point it punts on low level proofs. The plan is to use coarser
dependency tracking instead of low level proofs for pre-processing. Dependencies can be converted into a proof hint representation that can be checked using a stronger checker.
 2022-11-05 10:34:57 -07:00
Nikolaj Bjorner 154b09309b fixing build, wip on model reconstruction integration into dependent-expr-state 2022-11-04 14:04:44 -07:00
Nikolaj Bjorner 7bb962d934 add ad-hoc any-of for cross compatibility and simplifying interface 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-11-04 12:49:55 -07:00
Nikolaj Bjorner 49d1490454 add ad-hoc any-of for cross compatibility and simplifying interface 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-11-04 12:48:30 -07:00
Nikolaj Bjorner de9368bab0 Update expr_replacer.h 2022-11-04 11:25:39 -07:00
Nikolaj Bjorner 28668c6efc set up model reconstruction trail 2022-11-04 11:25:39 -07:00
Nikolaj Bjorner 84af521514 fixes #6439 #6436 2022-11-04 09:36:06 -07:00