example of need for master-only and extreme rays - loyd77 golf example

[svigerske]

Issue created by migration from Trac.

Original creator: @mgalati13

Original creation time: 2011-11-18 17:39:58

Assignee: @mgalati13

Attached is a good case showing the need for either:
(1) handle master-onlys directly
(2) add extreme rays
(3) need a presolver

This is a case where a master-only column has no UB. Although it could be easily deduced by a presolver.

This problem gets into numerical difficulty if you don't have these. The workaround is to use ColumnUB=1000. But this is ugly.

[svigerske]

Attachment loyd77_stroke.block by @mgalati13 created at 2011-11-18 17:40:50

[svigerske]

Attachment loyd77_stroke.mps by @mgalati13 created at 2011-11-18 17:41:02