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nla review (#4321)

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* simplify the nla_solver interface

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

* more simplifications

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

* init m_use_nra_model

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

* work on NSB comments

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

* work on NSB comments

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

Co-authored-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Lev Nachmanson 2020-05-13 13:52:42 -07:00 • committed by GitHub
parent 16aec328f1
commit 6b28973799
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10 changed files with 71 additions and 118 deletions
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9
src/math/lp/int_solver.cpp
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@ -189,7 +189,16 @@ std::ostream& int_solver::display_inf_rows(std::ostream& out) const {
return out;
}
bool int_solver::cut_indices_are_columns() const {
for (const auto & p: m_t) {
if (p.column().index() >= lra.A_r().column_count())
return false;
}
return true;
}
bool int_solver::current_solution_is_inf_on_cut() const {
SASSERT(cut_indices_are_columns());
const auto & x = lrac.m_r_x;
impq v = m_t.apply(x);
mpq sign = m_upper ? one_of_type<mpq>() : -one_of_type<mpq>();