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Dear Xiangyong,<br>
<br>
the original problem consists of all variables and constraints that
you added during problem creation. After you start solving the
problem, all new variables and constraints are only added to the
transformed problem, i.e., also all priced variables are only added
to the transformed problem.<br>
<br>
In any case, releasing the variables twice sounds wrong. When you
create the variables, they are automatically captured once, so
unless you capture the variables again later (or capture the
transformed variables after transformation), you just need to
release them once.<br>
<br>
Best,<br>
Gerald<br>
<br>
<div class="moz-cite-prefix">On 24.02.2018 01:41, Xiangyong Li
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:452767bf.6bd.161c541894a.Coremail.lixiangyong@163.com">
<div
style="line-height:1.7;color:#000000;font-size:14px;font-family:Arial">
<div>Dear all,</div>
<div><br>
</div>
<div>I am developing my own BP based on the Coloring example.</div>
<div><br>
</div>
<div>I used original problem and transformed problem. </div>
<div><br>
</div>
<div>In SCIP_DECL_PROBDELTRANS, I can release each variable
by SCIPreleaseVar.</div>
<div>But in SCIP_DECL_PROBDELORIG, I got error "Segmentation
fault (core dumped)" when I freed each variable (in fact I
cannot successfully free even one variable). </div>
<div><br>
</div>
<div>Is each variable added to the transformed problem, not the
original problem? </div>
<div><br>
</div>
<div>Thanks for your help.</div>
<div><br>
</div>
<div>Xiangyong</div>
</div>
<br>
<br>
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