MIPLIB 2017 Infeas

stockholm

primal-infeasible

The instance

as published
Variables
20,644
Constraints
57,346
Nonzeros
171,076
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
will@6a3 ≥ 1
this instance, the other side
will@6a3 ≤ 0 at depth 2
Depth in the tree
2
Bounds tightened vs. source
964
Branch variable
will@6a3

Tightened bounds

964 entries
will@44c<=0will@6a3<=0tollCh@0<=1000tollCh@1<=1000tollCh@2<=1000tollCh@3<=1000tollCh@4<=1000tollCh@5<=1000tollCh@6<=1000tollCh@7<=1000tollCh@8<=1000tollCh@9<=1000

12 of 964 shown. The complete list is in the sidecar.

Also published in the dual-infeasible set view →