To suppress the presolve phase, set
option presolve 0.
To suppress transformation of piecewise-linear terms, set
option pl_linearize 0.
To suppress elimination of variables by substitution from constraints, set
option substout 0. (This is the default setting.) Substitutions specified within
var declarations are always applied.
To see a summary of transformations performed, set
option show_stats 1.
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