MIPLIB 2017 Infeas

cmflsp40-24-10-7

primal-infeasible

The instance

as published
Variables
13,200
Constraints
2,825
Nonzeros
127,736
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
Y_25_8 ≤ 0
this instance, the other side
Y_25_8 ≥ 1 at depth 177
Depth in the tree
177
Bounds tightened vs. source
193
Branch variable
Y_25_8

Tightened bounds

193 entries
Y_1_9<=0Y_1_20<=0Y_1_21<=0Y_3_18<=0Y_4_5<=0Y_4_23<=0Y_5_15<=0Y_5_17<=0Y_5_18<=0Y_5_20<=0Y_6_6<=0Y_6_8<=0

12 of 193 shown. The complete list is in the sidecar.

Also published in the dual-infeasible set view →