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<p>Dear Emanuel,</p>
<p>another guess: did you define your variables to be integral and
does SCIP actually do any branching? If you did not define your
variables to be integral and also did not add a constraint handler
to check solutions (e.g., for integrality in the original space),
your LP solution after pricing might just be declared optimal. If
your separator should ensure a restriction on your feasible space,
it should better be a constraint handler. A separator should only
generate cuts to improve the LP relaxation, but should not be part
of the model definition, i.e., should not change feasibility of
any (integer) feasible solution.</p>
<p>Best,<br>
Gerald<br>
</p>
<br>
<div class="moz-cite-prefix">On 14.09.2017 09:23, Gregor Hendel
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:1089a168-aed0-d53f-3990-093cfaec402f@zib.de">
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Dear Emanuel,<br>
<br>
I am sorry for your troubles. A good first step to debugging
unexpected plugin behavior is to<br>
add the define<br>
<br>
#define SCIP_DEBUG<br>
<br>
at the very top of the file src/scip/sepa.c. After recompiling
SCIP and inputting a problem to optimize,<br>
you should see a lot of prose explaining why SCIP decides to run
(or not to run) your plugin.<br>
<br>
If you need further assistance, please add information about
concrete parameter values for priority, maxrounds, frequency, and
also the DELAYED flag.<br>
<br>
Kind regards,<br>
Gregor<br>
<br>
<br>
<br>
<br>
<div class="moz-cite-prefix">Am 13.09.2017 um 17:29 schrieb
Emanuel Delgadillo:<br>
</div>
<blockquote type="cite"
cite="mid:CAPH4VH0tbeLfwiXFOOdftK7ORUj0myU5-tpcubjsz7d1vPz1hg@mail.gmail.com">
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<div>Hi,<br>
<br>
</div>
I have implemented a branch-price with SCIP and I
want to add a separator. I coded it with C++
extending ObjSepa class and included it to scip, but
it is never called. <br>
</div>
I have output messages in it, and I have checked
maxrounds(root) and maxcuts(root) are not 0 and also
tried with different values for priority and
frequency. I have my own version of
includeDefaultPlugins, which doesn't include any other
default separator.<br>
</div>
I have already checked documentation, examples and
previous similar threads, but I couldn't solve it. I
also checked some files of source code (solve.c) to find
what I'm doing wrong, without success.<br>
</div>
Any ideas?<br>
<br>
</div>
Thanks in advance,<br>
</div>
Emanuel<br>
<div>
<div><br>
<br>
<div><br>
</div>
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