MIPLIB 2017 Infeas

dws012-03

primal-infeasible

The instance

as published
Variables
76,068
Constraints
38,484
Nonzeros
389,304
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
VAR33548 ≤ 0
this instance, the other side
VAR33548 ≥ 1 at depth 142
Depth in the tree
142
Bounds tightened vs. source
644
Branch variable
VAR33548

Tightened bounds

644 entries
VAR2281>=1VAR2323>=1VAR2215>=1VAR2226<=0VAR2228<=0VAR2229>=1VAR2230<=0VAR1981<=30VAR4129<=61VAR1982<=30VAR1983<=30VAR1984<=30

12 of 644 shown. The complete list is in the sidecar.

Also published in the dual-infeasible set view →