Originally posted by: Eumpfenbach

Works fine in Matlab for me. Trying to use Python and getting this error. Any ideas?

>>> problem = cplex.Cplex("mymodel_pre.lp")
CPLEX Error  1464: Line 434642: Identifier/name too long to process.
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "cplex/__init__.py", line 713, in __init__
    _internal._procedural.readcopyprob(env._e, self._lp, filename, filetype)
  File "cplex/_internal/_procedural.py", line 372, in readcopyprob
    check_status(env, status)
  File "cplex/_internal/_procedural.py", line 88, in __call__
    raise CplexSolverError(error_string, env, status)
cplex.exceptions.CplexSolverError: CPLEX Error  1464: Line 434642: Identifier/name too long to process.

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Originally posted by: Eumpfenbach

And obviously the error code says a lot. I am asking why the LP file works fine in Matlab but not here and why a file generated in ILOG IDE would create a file with this problem.
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Originally posted by: Eumpfenbach

Also, this is line 434642

0 <= x9#3015#1#1#0 <= 918

I need all the indices. I could realistically cut the name down by one character (ie "z" instead of "x9"). What's the limit I am hitting?
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Originally posted by: SystemAdmin

That identifier looks short enough. Can you read in the LP file with the interactive optimizer? Can you attach the offending LP file here?
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Originally posted by: Eumpfenbach

Biggish file:

http://www.mediafire.com/?lb329w7i93073a2

Works fine in ILOG and Matlab. Not in Python.
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#DecisionOptimization

Originally posted by: SystemAdmin

I could read the file in Python without any issue here.
What OS do you use? What version of CPLEX?
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Originally posted by: Eumpfenbach

Linux 64 bit V12.2

I guess I should upgrade and try again. Will post the result.
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