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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Here is the traceback.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Cbc1Main1 is called with the following arguments:<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'> const char * argv[] =
{"cbc","-log","0","-solve","-quit"};<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'> CbcMain1(5, argv, cbc);<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Program received signal SIGFPE, Arithmetic exception.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>0x081b46ae in CbcHeuristicFPump::solution (this=0x94a2390,<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'> solutionValue=@0xbff56fc8, betterSolution=0x9484e70)<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'> at ../../../Cbc/src/CbcHeuristicFPump.cpp:611<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>611 double perPass =
totalNumberIterations/(totalNumberPasses+numberPasses);<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>(gdb) where<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>#0 0x081b46ae in CbcHeuristicFPump::solution (this=0x94a2390,<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'> solutionValue=@0xbff56fc8, betterSolution=0x9484e70)<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'> at ../../../Cbc/src/CbcHeuristicFPump.cpp:611<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>#1 0x081f5d64 in CbcModel::doHeuristicsAtRoot (this=0x944ed68,<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'> deleteHeuristicsAfterwards=0) at
../../../Cbc/src/CbcModel.cpp:12221<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>#2 0x081d09ae in CbcModel::branchAndBound (this=0x944ed68,
doStatistics=0)<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'> at ../../../Cbc/src/CbcModel.cpp:1765<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>#3 0x081068f9 in CbcMain1 (argc=5, argv=0xbff5ce60,
model=@0xbff5caf0,<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'> callBack=0x80ec230 <dummyCallBack>) at
../../../Cbc/src/CbcSolver.cpp:8135<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>#4 0x080ec253 in CbcMain1 (argc=5, argv=0xbff5ce60,
model=@0xbff5caf0)<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'> at ../../../Cbc/src/CbcSolver.cpp:3106<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><snip><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
cbc-bounces@list.coin-or.org [mailto:cbc-bounces@list.coin-or.org] <b>On Behalf
Of </b>Matthew Galati<br>
<b>Sent:</b> Wednesday, August 12, 2009 7:19 PM<br>
<b>To:</b> cbc@list.coin-or.org<br>
<b>Subject:</b> [Cbc] cbc failure<o:p></o:p></span></p>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Calling CbcMain1 it fails at L611 of CbcHeuristicFPump.cpp
here:<br>
double perPass = totalNumberIterations/(totalNumberPasses+numberPasses);<br>
<br>
because division by 0.<br>
<br>
It would take some work to repeat in an independent test - since it happens
deep in my code. But, you might want to check for division by 0 here.<o:p></o:p></p>
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