MIPLIB 2017 Infeas

eva1aprime6x6opt

primal-infeasible

The instance

as published
Variables
3,514
Constraints
34,872
Nonzeros
161,558
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_3465 ≥ 1
this instance, the other side
x_3465 ≤ 0 at depth 326
Depth in the tree
326
Bounds tightened vs. source
522
Branch variable
x_3465

Tightened bounds

522 entries
x_89>=-4.2416045291361595x_89<=4.2416045291361595x_90>=-0.050342907115899997x_90<=0.050342907115899997x_91>=-0.02430555555556x_91<=0.02430555555556x_2681<=0x_2682<=0x_2684<=0x_3102<=0x_2685<=0x_3103<=0

12 of 522 shown. The complete list is in the sidecar.