TREEPRESOLVE

Determines the amount of full presolving to apply to nodes of the branch-and-bound tree search.

Integer

-1	Let the optimizer decide how often to presolve nodes.
0	Disabled.
1	Cautious strategy — presolve only when significant reductions are possible.
2	Medium strategy.
3	Aggressive strategy — presolve frequently.

-1

The presolving of nodes will restrict the handling of user cuts. If a node in the tree has been presolved, it will not be possible to call XPRSloadcuts to load user cuts from the global pool into the node or any of its descendants. Any user cuts already loaded into a node problem will automatically be presolved with the node, but will afterwards appear as new user cuts. User cuts can still be added to a presolved node or its descendants, but any such cut must be presolved to match the node it is being loaded into. A cut can be presolved by calling XPRSpresolverow, and this should be done immediately before calling XPRSaddrows to load the cut, to ensure that the cut is being presolved to match the current node.

XPRSmipoptimize ( MIPOPTIMIZE).

PRESOLVE.