The integer pre-solver makes iterative passes through a model determining appropriate constraint cuts to append to the formulation. In general, the marginal benefits of each additional pass declines. At some point, additional passes will only add to total solution times. Thus, LINGO imposes a limit on the maximum number of passes.

LINGO applies constraint cuts at both the top, or root, node of the branch-and-bound tree, and at all subsequent nodes within the tree. The MAXCTP parameter limits the maximum number of cuts at the top node, while the MAXCTR parameter sets the cut limit on all subsequent nodes in the tree. The default limit is 100 passes..