MIPLIB 2017 Infeas

cmflsp40-36-2-10

primal-infeasible

The instance

as published
Variables
28,152
Constraints
4,266
Nonzeros
386,432
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_16_3 ≥ 1
this instance, the other side
Y_16_3 ≤ 0 at depth 323
Depth in the tree
323
Bounds tightened vs. source
497
Branch variable
Y_16_3

Tightened bounds

497 entries
Y_1_4<=0Y_1_5<=0Y_1_6<=0Y_1_7<=0Y_1_8<=0Y_1_9<=0Y_1_10<=0Y_1_13<=0Y_1_14<=0Y_1_15<=0Y_1_23<=0Y_1_25<=0

12 of 497 shown. The complete list is in the sidecar.

Also published in the dual-infeasible set view →