MIPLIB 2017 Infeas

proteindesign122trx11p8

primal-infeasible

The instance

as published
Variables
127,326
Constraints
254
Nonzeros
503,427
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_118859_ ≤ 0
this instance, the other side
X_INTRODUCED_118859_ ≥ 1 at depth 799
Depth in the tree
799
Bounds tightened vs. source
799
Branch variable
X_INTRODUCED_118859_

Tightened bounds

799 entries
X_INTRODUCED_0_<=21X_INTRODUCED_4_<=29X_INTRODUCED_8_<=10X_INTRODUCED_34_>=23X_INTRODUCED_57_<=21X_INTRODUCED_68_>=23X_INTRODUCED_1973_<=0X_INTRODUCED_2019_<=0X_INTRODUCED_2040_<=0X_INTRODUCED_2058_<=0X_INTRODUCED_2149_<=0X_INTRODUCED_2323_<=0

12 of 799 shown. The complete list is in the sidecar.

Also published in the dual-infeasible set view →