[Cbc] Infeasible problem with multithreading enabled and (multiple or cutlength) option

[Yves Touchard]

Hello,

I have a problem with a constraint file for which the following command fails in a "problem proven infeasible" error:
bin/cbc infeas.lp threads 104 cutlength 40 multiple 4 branch printingOptions rows solution infeas.sol

Removing the multiple or the cutlength option leads to an optimal solution:
bin/cbc infeas.lp threads 104 multiple 4 branch printingOptions rows solution infeas.sol
bin/cbc infeas.lp threads 104 cutlength 40 branch printingOptions rows solution infeas.sol

Tests have been done in the trunk repository:
[ytouch at futuna coin-Cbc]$ svn info
Path: .
URL: https://projects.coin-or.org/svn/Cbc/trunk
Repository Root: https://projects.coin-or.org/svn/Cbc
Repository UUID: 6f23a84d-0c12-0410-9f0c-b73a89ba9ce0
Revision: 2092
Node Kind: directory
Schedule: normal
Last Changed Author: forrest
Last Changed Rev: 2092
Last Changed Date: 2014-10-03 13:58:33 +0200 (Fri, 03 Oct 2014)

Lp Constraint file is downloadable from:
https://www.dropbox.com/s/ihu44mjgwtv27ky/infeas.lp?dl=0

Thanks and regards,

Yves

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