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Handle correctly cancelled run (#5695)

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* remove the bound on total iterations in simplex

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

* remove unncesseray checks in  get_freedom_interval_for_column()

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

* fix the build of test-z3

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

* Revert "remove unncesseray checks in  get_freedom_interval_for_column()"

This reverts commit 6770ed85e3.

* optimize get_freedom_interval_for_column() for feasible case

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

* add function lar_solver::status_feasible

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

* rename status_is_feasible() to is_feasible()

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

* fix the linux build

Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
This commit is contained in:
Lev Nachmanson 2021-12-05 16:38:37 -10:00 • committed by GitHub
parent 0242566792
commit 7758b519bc
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13 changed files with 55 additions and 72 deletions
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12
src/math/lp/lar_solver.cpp
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@ -798,6 +798,18 @@ namespace lp {
}
// this function just looks at the status
bool lar_solver::is_feasible() const {
switch (this->get_status()) {
case lp_status::OPTIMAL:
case lp_status::FEASIBLE:
case lp_status::UNBOUNDED:
return true;
default:
return false;
}
}
numeric_pair<mpq> lar_solver::get_basic_var_value_from_row(unsigned i) {
numeric_pair<mpq> r = zero_of_type<numeric_pair<mpq>>();