[Clp] "Help in user pivot"

[Thomas Vincent]

Dear Clp ML,

I currently use Clp through Osi to manually perform pivots on a LP.
It's quite simple and works as follows:
 - I solve a LP using initialSolve()
 - I call Osi's pivot() method several times to reach some other solutions

It works most of the time but, when I try to deal with larger problems,
I get an "Help in user pivot" error.
From the source code of Clp I can see that it comes from ClpSimplex.cpp
and that it happens when something bad resulted from an internal
factorisation. However, I don't really understand how nor why it happens. :/

Do you know how I can avoid that?
Thanks in advance.

Cheers,
Thomas

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