<br><font size=2 face="sans-serif">Kim,</font>
<br>
<br><font size=2 face="sans-serif">a) Looking at your previous stack printout
I realized that the new error handling was not activated on that particular
path. Try again and see if it is better (ClpModel.cpp has been changed
as well as some Cbc stuff).</font>
<br>
<br><font size=2 face="sans-serif">b) If you really do have an upper bound
on a constraint that is that negative then it is not surprising you have
numerical problems.</font>
<br>
<br><font size=2 face="sans-serif">c) If you do a clean compile adding
ADD_CXXFLAGS="-DCLP_FAST_CODE" that will switch off more error
checking (including that assert). Because the error checking is off
the code will fail some unit tests which deliberately provoke errors and
expect them to be trapped.</font>
<br>
<br><font size=2 face="sans-serif">John</font>
<br>
<br>
<br>
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<td width=40%><font size=1 face="sans-serif"><b>"Kim Hansen"
<kimhanse@gmail.com></b> </font>
<br><font size=1 face="sans-serif">Sent by: cbc-bounces@list.coin-or.org</font>
<p><font size=1 face="sans-serif">07/23/2007 07:01 AM</font>
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<div align=right><font size=1 face="sans-serif">To</font></div>
<td><font size=1 face="sans-serif">Cbc <cbc@list.coin-or.org></font>
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<div align=right><font size=1 face="sans-serif">cc</font></div>
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<td>
<div align=right><font size=1 face="sans-serif">Subject</font></div>
<td><font size=1 face="sans-serif">[Cbc] Assertion in CbcModel.cpp:525</font></table>
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<br>
<br><tt><font size=2>Hi all,<br>
<br>
I get this assertion even though I compiled the cbc library with -DNDEBUG<br>
<br>
CbcModel.cpp:525: void CbcModel::branchAndBound(int): Assertion<br>
`upper[i]>-1.0e10' failed.<br>
<br>
I looked at a stack trace, but that didn't give any useful information<br>
as the assertion is from the first call into the cbc framework.<br>
<br>
I can not reproduce this assertion when using the cbc binary, but I<br>
get it all the time when trying to solve this problem in my own<br>
program.<br>
<br>
-- <br>
Kim Hansen<br>
Vadgårdsvej 3, 2.tv<br>
2860 Søborg<br>
Fastnet: 3956 2437 -- Mobil: 3091 2437<br>
<br>
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</font></tt>
<br>