Unfortunately, I can't replicate the problem. I tried a few different versions and both OSI and a direct call to SYMPHONY return the value <span style="color:rgb(34, 34, 34);font-family:arial, sans-serif;font-size:13px;background-color:rgb(255, 255, 255)">-2207.94 in every case, with both OSI and SYMPHONY. If you can provide a little more detail, such as specific compiler version, configuration options used, what ThirdParty packages you had installed, etc., I can try to look into it a bit more.</span><div>
<font class="Apple-style-span" color="#222222" face="arial, sans-serif"><br></font></div><div><font class="Apple-style-span" color="#222222" face="arial, sans-serif">Ted<br></font><div>
<br><div class="gmail_quote">On Sat, Oct 22, 2011 at 1:37 PM, Thomas Vincent <span dir="ltr"><<a href="mailto:thomas.vincent@univ-nantes.fr" target="_blank">thomas.vincent@univ-nantes.fr</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Hi again,<br>
<br>
I compiled several former versions of Symphony and just tested them with<br>
"./symphony -F problem.mps" .<br>
5.1.11 is the last one that returns the expected solution with default<br>
settings.<br>
<br>
Cheers,<br>
<font color="#888888">Thomas<br>
<br>
</font></blockquote></div><br><br clear="all"><div><br></div>-- <br>Dr. Ted Ralphs<br>Associate Professor, Lehigh University<br><a href="tel:%28610%29%20628-1280" value="+16106281280" target="_blank">(610) 628-1280</a><br>
ted 'at' lehigh 'dot' edu<br><a href="http://coral.ie.lehigh.edu/~ted" target="_blank">coral.ie.lehigh.edu/~ted</a><br>
<br>
</div>
</div>