Nikolaj Bjorner
87d4ce2659
working on #5614
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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
Nikolaj Bjorner
00deb12238
signed
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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
2021-05-21 15:51:27 -07:00
Lev Nachmanson
179988e161
support recursive terms ( #5246 )
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Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
2021-05-05 12:53:20 -07:00
Nikolaj Bjorner
f29a596070
deal with compiler warnings, from MacOS CI build
2021-03-08 17:14:09 -08:00
Lev Nachmanson
5d3070bc2d
implement graph integrality
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Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
2020-06-12 22:11:11 -07:00
Nikolaj Bjorner
caee936af5
build
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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
2020-05-10 13:42:19 -07:00
Nikolaj Bjorner
e74faf42ad
code review
2020-05-10 12:58:05 -07:00
Nikolaj Bjorner
c2e5cd78c8
change lar_terms to use column indices
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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
2020-04-06 12:13:59 -07:00
Nikolaj Bjorner
8d59355b88
fix #3750
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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
2020-04-04 14:37:51 -07:00
Lev Nachmanson
f5b62015fc
change the return type of ival.var() to tv
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Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
2020-03-25 19:43:55 -07:00
Nikolaj Bjorner
2b98c7e157
tidy^2
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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
2020-03-25 19:43:55 -07:00
Nikolaj Bjorner
2e2c42f7c8
tidy
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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
2020-03-25 19:43:55 -07:00
Nikolaj Bjorner
e50082b484
add tv
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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
2020-03-25 19:43:55 -07:00
Lev Nachmanson
d310ae9060
rebase with Z3Prover
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Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
2020-01-28 10:04:21 -08:00
Lev Nachmanson
1b8b09cddb
fixes in horner's heuristic
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Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
2020-01-28 10:04:21 -08:00
Lev Nachmanson
207c1c509f
fixes in horner's heuristic
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Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
2020-01-28 10:04:21 -08:00
Lev Nachmanson
dfe0e85629
toward fetching existing terms intervals from lar_solver
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Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
2020-01-28 10:04:21 -08:00
Lev Nachmanson
33cbd29ed0
mv util/lp to math/lp
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Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
2020-01-28 10:04:21 -08:00
