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Fix bugs causing primal simplex to cycle. Enable primal simplex clean up #916

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Fix bugs causing primal simplex to cycle. Enable primal simplex clean up #916

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7 changes: 3 additions & 4 deletions cpp/src/dual_simplex/phase2.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -2310,6 +2310,9 @@ void prepare_optimality(i_t info,
perturbation = 0.0;
} else {
settings.log.printf("Failed to remove perturbation of %.2e.\n", perturbation);
settings.log.printf("Unperturbed dual infeasibility: %.2e\n", dual_infeas);
settings.log.printf("Objective: %+.16e\n", sol.user_objective);
settings.log.printf("Num updates: %d\n", ft.num_updates());
}
}
}
Expand Down Expand Up @@ -3551,10 +3554,6 @@ dual::status_t dual_phase2_with_advanced_basis(i_t phase,
100.0 * dense_delta_z / (sparse_delta_z + dense_delta_z));
ft.print_stats();
}
if (settings.inside_mip && settings.concurrent_halt != nullptr) {
settings.log.debug("Setting concurrent halt in Dual Simplex Phase 2\n");
*settings.concurrent_halt = 1;
}
}
return status;
}
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