MIPLIB 2017 Infeas

sp98ic

dual-infeasible

The instance

as published
Variables
10,894
Constraints
825
Nonzeros
316,317
Format
MPS, gzipped

Where it comes from

provenance

The source instance's LP relaxation is feasible with a bounded optimum. Removing the elements below makes the objective unbounded, and putting any one of them back makes it bounded again.

Bounds dropped
4
Rows dropped
0

What was removed

4 entries
lb of x1428lb of x7276ub of x7281ub of x1427

4 of 4 shown. The complete list is in the sidecar.