MIPLIB 2017 Infeas

cmflsp60-36-2-6

primal-infeasible

The instance

as published
Variables
42,192
Constraints
6,388
Nonzeros
581,335
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
Z_1_17 ≥ 1
this instance, the other side
Z_1_17 ≤ 0 at depth 1,259
Depth in the tree
1,259
Bounds tightened vs. source
1,283
Branch variable
Z_1_17

Tightened bounds

1,283 entries
Y_1_5<=0Y_1_6<=0Y_1_7<=0Y_1_9<=0Y_1_10<=0Y_1_11<=0Y_1_12<=0Y_1_14<=0Y_1_16<=0Y_1_17<=0Y_1_18<=0Y_1_19<=0

12 of 1,283 shown. The complete list is in the sidecar.

Also published in the dual-infeasible set view →