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17869 commits 55 branches 52 tags 175 MiB
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73 commits

Author SHA1 Message Date
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
Lev Nachmanson
f7f9c15676 cheap_eqs tree 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-06-20 11:31:22 -07:00
Lev Nachmanson
f882219081 fix a bug in cheap_eqs with table 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-06-15 13:30:45 -07:00
Lev Nachmanson
d13e584706 simplify the fixed var table 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-06-15 13:30:45 -07:00
Lev Nachmanson
e5632736d2 review comments 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-06-12 22:11:11 -07:00
Lev Nachmanson
fbfcc6796a fix the build 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-06-12 22:11:11 -07:00
Lev Nachmanson
fe0e042e40 move m_fixed_var_table to lar_solver 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-06-12 22:11:11 -07:00
Lev Nachmanson
67eaff4490 testing cheap equalities 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-06-12 22:11:11 -07:00
Lev Nachmanson
94263167ec cheap eqs 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-06-12 22:11:11 -07:00
Lev Nachmanson
50b9915c57 avoid big nums in is_offset_row in cheap_eqs 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2020-06-12 22:11:11 -07:00