MIPLIB 2017 Infeas

eilC76-2

primal-infeasible

The instance

as published
Variables
28,599
Constraints
75
Nonzeros
314,837
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
x12 ≥ 1
this instance, the other side
x12 ≤ 0 at depth 91
Depth in the tree
91
Bounds tightened vs. source
91
Branch variable
x12

Tightened bounds

91 entries
x10<=0x12<=0x21<=0x25<=0x29<=0x31<=0x39<=0x40<=0x56<=0x58<=0x65<=0x214<=0

12 of 91 shown. The complete list is in the sidecar.

Also published in the dual-infeasible set view →