MIPLIB 2017 Infeas

proteindesign121hz512p9

primal-infeasible

The instance

as published
Variables
159,145
Constraints
301
Nonzeros
629,449
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_17_ ≥ 31
this instance, the other side
X_INTRODUCED_17_ ≤ 30 at depth 572
Depth in the tree
572
Bounds tightened vs. source
289
Branch variable
X_INTRODUCED_17_

Tightened bounds

289 entries
X_INTRODUCED_17_<=30X_INTRODUCED_23_>=317X_INTRODUCED_23_<=317X_INTRODUCED_28_<=15X_INTRODUCED_1925_<=0X_INTRODUCED_1970_<=0X_INTRODUCED_1971_<=0X_INTRODUCED_1972_<=0X_INTRODUCED_20953_<=0X_INTRODUCED_40658_<=0X_INTRODUCED_41063_<=0X_INTRODUCED_59223_<=0

12 of 289 shown. The complete list is in the sidecar.

Also published in the dual-infeasible set view →