<div dir="ltr"><div><div>Thanks to everyone for your answers. It's already solved. I changed a bit my code to use the C interface and then I could find my bug.<br><br></div>Best,<br></div>Emanuel<br></div><div class="gmail_extra"><br><div class="gmail_quote">2017-09-14 4:59 GMT-03:00 Gerald Gamrath <span dir="ltr"><<a href="mailto:gamrath@zib.de" target="_blank">gamrath@zib.de</a>></span>:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div text="#000000" bgcolor="#FFFFFF">
<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><div><div class="h5">
<br>
<div class="m_1634985232634978701moz-cite-prefix">On 14.09.2017 09:23, Gregor Hendel
wrote:<br>
</div>
<blockquote type="cite">
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="m_1634985232634978701moz-cite-prefix">Am 13.09.2017 um 17:29 schrieb
Emanuel Delgadillo:<br>
</div>
<blockquote type="cite">
<div dir="ltr">
<div>
<div>
<div>
<div>
<div>
<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>
</div>
</div>
</div>
<br>
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