XSLP_MODELCOLS

Number of model columns in the problem

Integer

This is the number of columns currently in the problem without any augmentation, i.e. the number of columns that describe the algebraic definition of the problem. These columns always precede the augmentation columns in order. If the problem is presolved, this may be smaller than the number of original columns in the problem. To access the number of original columns, use XSLP_ORIGINALCOLS.