<div dir="ltr"><div><div><div>John,<br><br></div>Many thanks for your fix. I have downloaded abd copied the CoinLpIO files as you suggested, and it does seem to work with the LP file -- I had to reintroduce the spaces, as I had edited the file to remove the spaces so that Cbc can read the file.<br><br></div>On a somewhat related topic, I think the SOS information is not included in a LP or MPS formatted file written by Cbc (I assume via CoinUtils again). Is there anyway to include them, or is that not currently supported?<br><br>This was in fact the reason I was reading a LP file written by CPLEX, as the file written by Cbc did not include the SOS information. I was trying to compare a problem that CPLEX solved much faster than Cbc - under 10 seconds compared to something like 30,000 seconds for Cbc.<br><br></div><div>Thanks again!<br><br></div><div>Kish<br><br></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Sun, Feb 18, 2018 at 7:40 PM, John Forrest <span dir="ltr"><<a href="mailto:john.forrest@fastercoin.com" target="_blank">john.forrest@fastercoin.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div text="#000000" bgcolor="#FFFFFF">
<div class="m_-3232761942460507219moz-cite-prefix">Kish,<br>
<br>
This was more difficult to fix than I expected. The coding for
readLp uses fscanf("%s") which is totally dependent on space as a
separator. <br>
<br>
I think I have fixed in trunk (you can just copy over CoinLpIO.?pp
to stable. I have tried it on all the .lp files I have - which is
not that many. Some files had lines with more than 100K
characters which caused some problems.<br>
<br>
Please can people check I have not introduced any bugs. Also if
you want any other cosmetic changes - now is the time to ask for
them.<br>
<br>
John Forrest<div><div class="h5"><br>
On 16/02/18 11:51, Kish Shen wrote:<br>
</div></div></div>
<blockquote type="cite"><div><div class="h5">
<div dir="ltr">
<div>
<div>Hi,<br>
<br>
</div>
I posted about this to coin-discuss mailing list yesterday,
but it has not appear there, and there seems to be no messages
for the list since Sept 2017, so I am posting this here as
well, in case something is wrong with the coin-discuss mailing
list.<br>
<br>
I am getting errors from Cbc when reading an LP format file
generated by CPLEX 12:<br>
<br>
### CoinLpIO::readLp(): bad SOS item S1<br>
<br>
I assume this is from reading the SOS items in the LP file
like:<br>
<br>
s999: S1 :: x1154 : 1 x5539 : 2<br>
<br>
Looking at CoinLpIO.cpp, the code expects no space between S1
and ::<br>
<br>
if (next>=buff&&(!strncmp(next,"S<wbr>1::",4)||!strncmp(next,"S2::",<wbr>4)))
{<br>
setType = next[1]-'0';<br>
gotStart=true;<br>
} else {<br>
// error<br>
goodLine=0;<br>
}<br>
<br>
<div>I edited the LP file and changed all the 'S1 ::' to
'S1::', and I then got errors about x1154: repeatedly.<br>
</div>
<div>So it looks like the error handling does not advance to
the next line after finding an error.<br>
<br>
</div>
<div>I edited removed all the spaces before ':' for the SOS
items, and the file was then read without errors.<br>
</div>
<div> <br>
</div>
<div>Should ReadLp be changed to read the SOS items generated
by CPLEX with the extra spaces?<br>
<br>
</div>
I am running the latest stable branch of Cbc 2.9, downloaded
via svn co about 2 days ago.<br>
<br>
</div>
<div>Thanks and cheers,<br>
<br>
</div>
<div>Kish<br>
<br>
</div>
</div>
<br>
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