Print Presolve Status
- Type
Selection
- Range
The settings listed below
- Default
No
This option indicates whether presolve status information for the variables and constraint should be printed to the listing file. Possible values are:
No
Yes
Possible presolve statuses for the variables are:
In presolved problem
Fixed to lower bound
Fixed to upper bound
Fixed to other value
Aggregated out
Deleted or merged
Possible presolve statuses for the constraints are:
In presolved problem
Redundant
Used for aggregation
Deleted
This option is especially useful to detect which constraints with a Big M value are not eliminated by preprocessing. A Big M constraint that is not eliminated by preprocessing can be reformulated as an Indicator Constraint.
Note
Presolve status information is only available for LP and MIP models.
Presolve status information is not available if CPLEX Presolve detects that the model is infeasible or unbounded.
Presolve status information is not available if the procedure GMP::SolverSession::Execute or GMP::SolverSession::AsynchronousExecute is used to solve the model.
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