[Clp] Help - Input file .lp doesnot run

[Matthew Saltzman]

On Mon, 2012-07-16 at 12:20 -0400, Francois Margot wrote: 
> Hi Jack:
> 
>  > I need some help. I´m testing a problem in Clp, I wrote it in .lp to 
>  > input but the Clp doesn´t recognize the name of the constraints.
>  >
>  > I thought my .lp was wrong, but it works perfectly on GLPK, and it
>  > finds the optimal solution (obj 5169.13). I tried all the
>  > combinations I could imagine and all didn´t work. Clp tell the name
>  >contains illegal character ":", which the documentation tell, it works
>  > to identify the end of the name of each constraint.
> 
>  > I have no idea how to solve this. The file is attached on email. The
>  > Clp version was 1.14.4.
> 
>  > The most strange thing is I used GLPK to convert the .lp file to .mps 
>  > and solved it on Clp. It works! So, I thought it could be some
>  > problem with the .lp files.
> 
>  > All the constraints name are according to the function
>  > is_invalid_name( ). It must return 0 to all of them.
> 
>  > It should be something stupid but I have no idea what it could be. I
>  > think that´s something wrong in the line 5.
> 
>  > Does somebody know what how can I solve this problem?
> 
> The problem is that there is a white space between '-' and '1250' in the 
> rhs of constraint a2.

Is that a bug or a feature?

-- 
Matthew Saltzman
Clemson University Math Sciences
mjs AT clemson DOT edu