MIPLIB 2017 Infeas

s55

dual-infeasible

The instance

as published
Variables
78,141
Constraints
9,752
Nonzeros
261,185
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
393
Rows dropped
140

What was removed

533 entries
row c6477lb of Atr_4_68tr_5_70_li0lb of Atr_27_74tr_30_79_li2row c47row c5950row c5801lb of Atr_7_31tr_5_35_li0row c7696lb of Atr_6_67tr_8_72_li0lb of Atr_4_5tr_2_7_li0row c42row c18

12 of 533 shown. The complete list is in the sidecar.