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<div class="moz-cite-prefix">Yves,<br>
<br>
I can reproduce problem - it is a tolerance issue in CglKnapsack.
It is taking longer than I thought to track it down and make
minimal change needed.<br>
<br>
John Forrest<br>
<br>
On 17/10/14 10:52, Yves Touchard wrote:<br>
</div>
<blockquote cite="mid:5440E6C2.2070109@dxo.com" type="cite">
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Hello,<br>
<br>
I have a problem with a constraint file for which the following
command fails in a "problem proven infeasible" error:<br>
<i>bin/cbc infeas.lp threads 104 cutlength 40 multiple 4 branch
printingOptions rows solution infeas.sol</i><br>
<br>
Removing the multiple or the cutlength option leads to an optimal
solution:<br>
<i>bin/cbc infeas.lp threads 104 multiple 4 branch printingOptions
rows solution infeas.sol<br>
</i><i><i>bin/cbc infeas.lp threads 104 cutlength 40 branch
printingOptions rows solution infeas.sol</i><br>
<br>
</i>Tests have been done in the trunk repository:<br>
<i>[ytouch@futuna coin-Cbc]$ svn info</i><i><br>
</i><i>Path: .</i><i><br>
</i><i>URL: <a moz-do-not-send="true"
class="moz-txt-link-freetext"
href="https://projects.coin-or.org/svn/Cbc/trunk">
https://projects.coin-or.org/svn/Cbc/trunk</a></i><i><br>
</i><i>Repository Root: <a moz-do-not-send="true"
class="moz-txt-link-freetext"
href="https://projects.coin-or.org/svn/Cbc">
https://projects.coin-or.org/svn/Cbc</a></i><i><br>
</i><i>Repository UUID: 6f23a84d-0c12-0410-9f0c-b73a89ba9ce0</i><i><br>
</i><i>Revision: 2092</i><i><br>
</i><i>Node Kind: directory</i><i><br>
</i><i>Schedule: normal</i><i><br>
</i><i>Last Changed Author: forrest</i><i><br>
</i><i>Last Changed Rev: 2092</i><i><br>
</i><i>Last Changed Date: 2014-10-03 13:58:33 +0200 (Fri, 03 Oct
2014)</i><i><br>
</i><br>
Lp Constraint file is downloadable from:<br>
<a moz-do-not-send="true" class="moz-txt-link-freetext"
href="https://www.dropbox.com/s/ihu44mjgwtv27ky/infeas.lp?dl=0">https://www.dropbox.com/s/ihu44mjgwtv27ky/infeas.lp?dl=0</a><br>
<br>
Thanks and regards,<br>
<br>
Yves<br>
<br>
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