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<div class="moz-cite-prefix">Kevin,<br>
<br>
Both you and Haroldo are right. The preprocessing changed some
values slightly. The correct solution was found but when double
checking it a tighter tolerance is used for a solve but the
standard tolerance should have been used on final check for
feasibility. The largest infeasibility found was then epsilon
over allowed.<br>
<br>
I have modified to put back standard tolerance a bit earlier.<br>
<br>
John Forrest<br>
<br>
On 20/11/17 11:52, Kevin van Blokland wrote:<br>
</div>
<blockquote type="cite"
cite="mid:OFC09F32EF.639016A2-ONC12581DE.004128F3-C12581DE.004138FD@cqm.nl"><font
size="2" face="sans-serif">Dear CBC community,</font>
<br>
<br>
<font size="2" face="sans-serif">We are faced with a problem
formulation
that is infeasible for CBC but optimal for commercial solvers.
My best
guess is that the problem is related to integer/floating point
precision
issues.</font>
<br>
<br>
<font size="2" face="sans-serif">Is someone able to look at the
provided
mps files and give us any direction on a solution? The mps file
can be
downloaded from the following link: </font><a
href="https://urldefense.proofpoint.com/v2/url?u=https-3A__cqmshare.blob.core.windows.net_uploads_model3.mps-3Fst-3D2017-2D11-2D20T11-253A25-253A00Z-26se-3D2018-2D11-2D21T11-253A25-253A00Z-26sp-3Dr-26sv-3D2016-2D05-2D31-26sr-3Db-26sig-3DecTeCY-252BaqgbGr-252By7CHxw6p6jCWtIR9k2U02b3KT7CTg-253D&d=DwMBAg&c=Ngd-ta5yRYsqeUsEDgxhcqsYYY1Xs5ogLxWPA_2Wlc4&r=js2M0T-3OIMIVDvokcKjokJbk0F8QOCd0mT4FsVFE88&m=TKEW7I8nzLYXl9nCBltb6mFBfMpcLYrWwH8zi90kRmg&s=i644nvRBcwNp5sgd0rIjQyYJ5O8mdidHvIpMSOsHOoY&e="
moz-do-not-send="true"><font color="blue" size="2"
face="sans-serif">https://cqmshare.blob.core.windows.net/uploads/model3.mps?st=2017-11-20T11%3A25%3A00Z&se=2018-11-21T11%3A25%3A00Z&sp=r&sv=2016-05-31&sr=b&sig=ecTeCY%2BaqgbGr%2By7CHxw6p6jCWtIR9k2U02b3KT7CTg%3D</font></a>
<br>
<br>
<font size="2" face="sans-serif">Help is very much appreciated!</font>
<br>
<br>
<font size="2" face="sans-serif">Kind regards,</font>
<br>
<br>
<font size="2" face="sans-serif">Kevin van Blokland</font>
<br>
<fieldset class="mimeAttachmentHeader"></fieldset>
<br>
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</pre>
</blockquote>
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