[Cbc] Model unreadable

[Bjørn Sigurd Johansen (Spider Solutions AS)]

Dear All,

I have a really un-understandable problem. The model at
https://s3-eu-west-1.amazonaws.com/download.spidersolutions.no/Projects/LargeScale/modelReportingDuplicate.lp
gives error "### ERROR: 1 duplicates in objective and matrix"  and  "** Current model not valid".  I am using latest CBC version downloaded 1 week ago.

I can't see the reason for the message, and what's more, if I do more or less any change in the *comment line*
\ *** ***
the error message either disappears or is changed.  E.g. if the comment line is completely removed, the model is OK/solvable.
(Everything on a line starting with a backslash should be ignored, right?)


Best,
Bjorn


PS. The model is unrealistic i.e. heavily minimized, without removing the original error "1 duplicates in objective and matrix".

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