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82 commits

Author SHA1 Message Date
Lev Nachmanson c309d52283 runs a simple test 2023-09-13 08:12:00 -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
Lev Nachmanson a7966dc436 remove an assert 2023-08-07 14:55:13 -10:00
Lev Nachmanson 858eebca82 more efficient column_is_fixed 2023-08-07 14:55:13 -10:00
Lev Nachmanson 0c98c755ba new equality propagation scheme, etc 2023-08-07 14:55:13 -10:00
Nikolaj Bjorner f0184c3fde update format and checker for implied-eq 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2023-07-27 13:21:45 -07:00
Lev Nachmanson e091a2e775 remove the line with clang-format off 2023-07-10 12:05:59 -07:00
Lev Nachmanson 30a2ced9aa
patching merge (#6780) 
* patching merge

* fix the format and some warnings

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

* a fix in the delta calculation

* test patching

* try a new version of get_patching_deltas

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

* remove dead code from lp_tst and try optimizing patching

* add comments, replace VERIFY with lp_assert

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

* cleanup

---------

Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2023-06-27 17:53:27 -07:00
Nikolaj Bjorner a2bac119d3 differentiate fixed from offset-eq in statistics 2023-04-18 08:40:51 -07:00
Nikolaj Bjorner b69ad786f2 na 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-12-08 09:04:13 -08:00
Nikolaj Bjorner e45ae32685 unsound equality propagation #5676 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-12-08 09:02:05 -08:00
Nikolaj Bjorner 3c16edc8d3 check for v1 == v2 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-11-12 09:11:17 -08:00
Nikolaj Bjorner 63ac2ee0d1 #5614 turn on / off options to get better performance. 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2021-11-11 17:54:46 -08:00
Nikolaj Bjorner 87d4ce2659 working on #5614 
there are some different sources for the performance regression illustrated by the example. The mitigations will be enabled separately:
- m_bv_to_propagate is too expensive
- lp_bound_propagator misses equalities in two different ways:
   - it resets row checks after backtracking even though they could still propagate
   - it misses equalities for fixed rows when the fixed constant value does not correspond to a fixed variable.

FYI @levnach
 2021-11-02 14:55:39 -07:00
Lev Nachmanson 1a7c9fa54d rename a metod 2021-04-10 08:54:52 -07:00
Lev Nachmanson 6a1fd3b4d6 simplify the check for polarity, remove the struct with vertex and polarity 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2021-04-10 08:54:52 -07:00
Lev Nachmanson 8848e5b4c3 correctly explain the all fixed test in the octaganal tree 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2021-04-10 08:54:52 -07:00
Lev Nachmanson 18610bf31f debug issue 5127 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2021-04-10 08:54:52 -07:00
Nikolaj Bjorner 46831e7ebb provisionary fix for #5127 2021-04-06 22:32:22 -07:00
Nikolaj Bjorner 0b0efa83ca debugging #5127 2021-04-06 20:09:50 -07:00
Lev Nachmanson 2e5eb2dde2
Tree fix (#4864) 
* simplify cheap equality tree

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

* simplify cheap equality tree

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

* more fixes

Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-12-06 11:18:27 -08:00
Nikolaj Bjorner e46ad45968 na 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-08-24 02:20:30 -07:00
Lev Nachmanson fb035c0634 fixed a but with insertion of a null vertex 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-07-31 16:59:57 -07:00
Nikolaj Bjorner 02084dc95b misc 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-07-31 01:21:24 -07:00
Lev Nachmanson fff6a94de4 cheap_eqs - fix the build 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-07-04 09:33:45 -07:00
Lev Nachmanson 61da368ee3 cheap_eqs - work on fixed_phase 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-07-04 09:33:45 -07:00
Lev Nachmanson f4502ff952 cheap_eqs - work on fixed_phase 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-07-04 09:33:45 -07:00
Lev Nachmanson 1695379dc9 cheap_eqs - work on fixed_phase 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-07-04 09:33:45 -07:00
Lev Nachmanson a1c5cff541 cheap_eqs - work on fixed_phase 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-07-04 09:33:45 -07:00
Lev Nachmanson 29b3f438bc cheap_eqs - work on fixed_phase 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-07-04 09:33:45 -07:00
Lev Nachmanson cb3ebac3dd cleanup lp_bound_propagator.h 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-07-04 09:33:45 -07:00
Lev Nachmanson b996bc1f02 remove cheap equalities with the table 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-07-04 09:33:45 -07:00
Nikolaj Bjorner 5d36578684 some unused variables reported by Caleb 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-06-22 19:04:10 -07:00
Lev Nachmanson 6ced6995d0 check for m.get_sort(lhs->get_owner()) == m.get_sort(rhs->get_owner()) in equality propagation 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-06-22 11:48:46 -07:00
Lev Nachmanson 6524a70c32 remove un unnecessary call 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-06-20 11:31:22 -07:00
Lev Nachmanson 8f588a9263 fix the build 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-06-20 11:31:22 -07:00
Lev Nachmanson b703d2786c fix the build cheap_eqs 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-06-20 11:31:22 -07:00
Lev Nachmanson 3bde9f54d8 add some comments cheap_eqs 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-06-20 11:31:22 -07:00
Lev Nachmanson 115ae8fe14 check for integrality when adding an equality 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-06-20 11:31:22 -07:00
Lev Nachmanson c4fbe05a96 simplify cheap_eqs 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-06-20 11:31:22 -07:00
Lev Nachmanson e3503f060f debug cheap_eqs 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-06-20 11:31:22 -07:00
Lev Nachmanson 42ed1e62a9 debug cheap_eqs 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-06-20 11:31:22 -07:00
Lev Nachmanson 2e2e98925a debug cheap_eqs 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-06-20 11:31:22 -07:00
Lev Nachmanson ffaa7d0b27 debug cheap_eqs 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-06-20 11:31:22 -07:00
Lev Nachmanson 525f747e3c cheap_eqs 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-06-20 11:31:22 -07:00
Lev Nachmanson c2cead4fb6 cheap_eqs 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-06-20 11:31:22 -07:00
Lev Nachmanson b5fc9635c4 cheap_eqs 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-06-20 11:31:22 -07:00
Lev Nachmanson 3b00b34c6f cheap_eqs 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-06-20 11:31:22 -07:00
Lev Nachmanson 80467f1400 cheap_eqs 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-06-20 11:31:22 -07:00
Lev Nachmanson 431bb36cf5 cheap_eqs tree 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-06-20 11:31:22 -07:00