Skip to content

Understand why presolve cannot be used for AC calculation #2507

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
jajhall merged 1 commit into from
Sep 1, 2025
Merged

Understand why presolve cannot be used for AC calculation #2507

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
9 changes: 6 additions & 3 deletions highs/lp_data/Highs.cpp
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -1300,9 +1300,12 @@ HighsStatus Highs::optimizeModel() {
// return HighsStatus::kOk;
}

if (!basis_.valid && solution_.value_valid) {
// There is no valid basis, but there is a valid solution, so use
// it to construct a basis
const bool can_use_basis =
!this->model_.lp_.isMip() || options_.solve_relaxation;
if (can_use_basis && !basis_.valid && solution_.value_valid) {
// Solver may be able to make use of basis, and there is no valid
// basis, but there is a valid solution, so use it to construct a
// basis
return_status =
interpretCallStatus(options_.log_options, basisForSolution(),
return_status, "basisForSolution");
Expand Down
Loading