Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
detect slow propagations
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
fiddle with the stop conditions
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
get rid of constraint->m_predecessors, fix a bug in push/pop with lemmas
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
clean detection of stale lemmas in pop
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
add constraints lazily to cut_solver
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
refactor some of cut_solver classes into include files
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
prepare to index constraint from 0 to to n - 1, where n is the number of constraints
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
prepare for constraint priority
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
use priorities in active_set
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
remove unnecesessary parameters
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
speedup bound propagations
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
restore tactics
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
speedup bound propagation by avoiding some calls to propagate_constraint_only_one_unlim
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
fixes by Nikolaj
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
fix print lp_core_solver
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
work on gomory test, subs terms indices correctly
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
correct const_iterator for lar_term
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
improve static_matrix with iterators
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
make row_strip a struct
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
move row_strip outside of static_matrix
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
add const_iterator to row_strip
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
remove the hierarchy of iterators - use std::iterators
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
adding gcd_test stats and taking care of for iterators
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
restore qflia_tactic.cpp
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
run gcd_test according to settings()
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
experiment with picking a narrow or random branch
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
add a diagnostic method
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
white space change
Signed-off-by: Lev Nachmanson <levnach@microsoft.com>
cleanup in int_solver
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
some cleanup
Signed-off-by: Lev Nachmanson <levnach@microsoft.com>
remove m_became_zeros
Signed-off-by: Lev Nachmanson <levnach@microsoft.com>
start cut_solver, work on disjoint_intervals
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
start cut_solver, work on disjoint_intervals
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
work on disjoint_intervals
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
work on disjoint_intervals
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
work on disjoint_intervals
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
work on disjoint_intervals
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
work on disjoint_intervals
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
workin on disjoint_intervals
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
working on disjoint_intervals
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
working on disjoint_intervals
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
working on disjoint_intervals
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
work on disjoint_intervals
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
fix bugs in disjoint_intervals
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
fix bugs in gisjoint_intervals
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
fix bugs in gisjoint_intervals
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
fix bugs in disjoint_intervals
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
fix bugs in disjoint_intervals
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
fix bugs is disjoint intervals
Signed-off-by: Lev Nachmanson <levnach@microsoft.com>
bug fixes in disjoint_intervals
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
disjoint_intervals passes the test
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
test disjoint_intervals push(), pop()
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
cut_solver
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
work on cut_solver
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
Signed-off-by: Lev Nachmanson <levnach@microsoft.com>
handle integer vars in random_update
Signed-off-by: Lev Nachmanson <levnach@microsoft.com>
call the assert in gomory_cut and branching to a correct place
Signed-off-by: Lev Nachmanson <levnach@microsoft.com>
fixes in goromy cut
Signed-off-by: Lev Nachmanson <levnach@microsoft.com>
disable x values tracking in random_update
Signed-off-by: Lev Nachmanson <levnach@microsoft.com>
more fixes in gomory cut
Signed-off-by: Lev Nachmanson <levnach@microsoft.com>
change in mk_bound by Nikolaj
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
fixes in gomory cut and setup
Signed-off-by: Lev Nachmanson <levnach@microsoft.com>
fixes in int_solver
Signed-off-by: Lev Nachmanson <levnach@microsoft.com>
change a printout
Signed-off-by: Lev Nachmanson <levnach@microsoft.com>
fix by Nikolaj in treating terms returned by int_solver
Signed-off-by: Lev Nachmanson <levnach@microsoft.com>
fix syntax
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
fix a free coefficient bug in bound propagaion and simplify gomory cut
Signed-off-by: Lev Nachmanson <levnach@microsoft.com>
avoid tracking pivoted rows during int_solver::check()
Signed-off-by: Lev Nachmanson <levnach@microsoft.com>
progress in gomory cut
Signed-off-by: Lev Nachmanson <levnach@microsoft.com>
the first version of Gomory cut, probably broken
Signed-off-by: Lev Nachmanson <levnach@microsoft.com>
rename a function
Signed-off-by: Lev Nachmanson <levnach@microsoft.com>
gomory cut worked on a toy example
Signed-off-by: Lev Nachmanson <levnach@microsoft.com>
track the set of integer variables that are not set to integer values
Signed-off-by: Lev Nachmanson <levnach@microsoft.com>
