MIPLIB 2017 Infeas

roi2alpha3n4

dual-infeasible

The instance

as published
Variables
6,816
Constraints
1,234
Nonzeros
796,463
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
18
Rows dropped
17

What was removed

35 entries
lb of z_606_263row sdef_5810lb of z_632_374row sdef_10652lb of z_316_267row sdef_2528row sdef_9348ub of s_2520lb of z_380_633lb of z_619_376row sdef_9349lb of z_372_378

12 of 35 shown. The complete list is in the sidecar.