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Hi Sebastian,<br>
<br>
just a sort clarification: as Jakob said, the absolute gap limit is
checked in the presolved problem. The relative gap limit, however,
is checked in the original problem, as you would expect.<br>
<br>
Best,<br>
Gerald<br>
<br>
<div class="moz-cite-prefix">Am 19.11.19 um 09:03 schrieb Jakob
Witzig:<br>
</div>
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cite="mid:65607eb6-4ad8-0238-41c2-71cb865d463a@zib.de">
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Hi Sebastian,<br>
<br>
SCIP checks the gap in the transformed problem space which might
differ slightly from the gap in original problem space (that is
what you see in your log file). However, without reproducing your
issue I cannot give you a 100% sure answer.<br>
<br>
Note, SCIP always checks the gap limits within tolerances (by
default 1e-9). Thus, SCIP might terminate with a marginal gap
although you set limits/gap = 0.0.<br>
<br>
Best,<br>
Jakob <br>
<br>
<div class="moz-cite-prefix">Am 19.11.19 um 08:25 schrieb
Sebastian Schmidt:<br>
</div>
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cite="mid:9c704ab71cff9b33b826d8ef8a86de75e13a2cf9.camel@informatik.uni-halle.de">
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<div>Hi,</div>
<div><br>
</div>
<div>I'm solving an MIP with SCIP, and I have set my gap values
to 0 (limits/gap) and 0.001 (limits/absgap). But my MIP aborts
already with an absolute gap of 0.6. I attached the output
log, but sadly cannot reproduce the error.</div>
<div><br>
</div>
<div>Is there something I could have done wrong that caused this
behavior?</div>
<div><br>
</div>
<div>Thanks,</div>
<div>Sebastian</div>
<br>
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<pre class="moz-signature" cols="72">--
Jakob Witzig
Zuse Institute Berlin (ZIB)
Division Mathematical Optimization and Scientific Information
Research Group Mathematical Optimization Methods
Takustrasse 7
14195 Berlin
Tel. : +49 (0)30 84185-416
Fax : +49 (0)30 84185-269
email: <a class="moz-txt-link-abbreviated" href="mailto:witzig@zib.de" moz-do-not-send="true">witzig@zib.de</a></pre>
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