<br><font size=2 face="sans-serif">Thank you for sending me the mps file.</font>
<br>
<br><font size=2 face="sans-serif">I am surprised that glpk had no problems
solving the problem.</font>
<br>
<br><font size=2 face="sans-serif">If you look at the mps file you sent
you will see that row R0000092 is an equality row with rhs of 0.0 and one
element, a +1 in column C0002992. C0002992 is fixed to 1in the bounds
section so obviously the problem is infeasible as reported.</font>
<br>
<br><font size=2 face="sans-serif">John Forrest</font>
<br>
<br>
<br>
<table width=100%>
<tr valign=top>
<td width=40%><font size=1 face="sans-serif"><b>Spring <springsender@yahoo.it></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">09/21/2007 10:34 AM</font>
<td width=59%>
<table width=100%>
<tr valign=top>
<td>
<div align=right><font size=1 face="sans-serif">To</font></div>
<td><font size=1 face="sans-serif">cbc@list.coin-or.org</font>
<tr valign=top>
<td>
<div align=right><font size=1 face="sans-serif">cc</font></div>
<td>
<tr valign=top>
<td>
<div align=right><font size=1 face="sans-serif">Subject</font></div>
<td><font size=1 face="sans-serif">[Cbc] mps error</font></table>
<br>
<table>
<tr valign=top>
<td>
<td></table>
<br></table>
<br>
<br>
<br><font size=3>Hi, <br>
I'm trying to solve a Binary optimization problem by using both coin-or
cbc an glpk solver. In particular I'm using glpk to create the mps file
for the problem and cbc to solve it.<br>
My optimization problem is the following: I'have 30 cars and 374 park rows
and I have to find the best parking.<br>
I have choose to solve firstly the problem with 20 cars and all the park
rows, I've obtained the solution and now I want to solve the problem with
30 cars and all the rows by fixing to 1 the variables obtained like results
with 20 cars but when I give the generated mps file to cbc I've the following
error:</font><font size=1><i><br>
Model was imported from D:/workspace/OptimizationProject/info/optimizationFiles/F2cv_ProblemDescription.mps
in 2.303 seconds<br>
1 infeasibilities<br>
Problem is infeasible - tightenPrimalBounds!</i><br>
</font><font size=2><br>
What's the problem?<br>
I've solved in the same way the problem with Glpk and I've no errors.<br>
<br>
Thanks</font>
<p><font size=3> </font>
<hr>
<hr><font size=2 face="Arial">L'email della prossima generazione? Puoi
averla con la </font><a href=http://us.rd.yahoo.com/mail/it/taglines/hotmail/nowyoucan/nextgen/*http://it.docs.yahoo.com/nowyoucan.html><font size=2 color=blue face="Arial"><u>nuova
Yahoo! Mail</u></font></a><tt><font size=2>_______________________________________________<br>
Cbc mailing list<br>
Cbc@list.coin-or.org<br>
http://list.coin-or.org/mailman/listinfo/cbc<br>
</font></tt>
<p>