MIPLIB 2017 Infeas

proteindesign121pgb11p9

primal-infeasible

The instance

as published
Variables
132,672
Constraints
254
Nonzeros
524,690
Format
MPS, gzipped

Where it comes from

provenance

A branch-and-bound run reached this node's parent and split on a variable. This instance is the side the search did not explore, and it has no feasible point.

branch taken by the search
X_INTRODUCED_59935_ ≤ 0
this instance, the other side
X_INTRODUCED_59935_ ≥ 1 at depth 20
Depth in the tree
20
Bounds tightened vs. source
20
Branch variable
X_INTRODUCED_59935_

Tightened bounds

20 entries
X_INTRODUCED_58090_<=0X_INTRODUCED_58277_<=0X_INTRODUCED_58409_<=0X_INTRODUCED_58493_<=0X_INTRODUCED_58884_<=0X_INTRODUCED_59514_<=0X_INTRODUCED_59643_<=0X_INTRODUCED_59935_>=1X_INTRODUCED_60281_<=0X_INTRODUCED_161560_>=1X_INTRODUCED_338890_>=1X_INTRODUCED_431753_<=0

12 of 20 shown. The complete list is in the sidecar.

Also published in the dual-infeasible set view →