[BCP] CoinError after "LP: Returned children to TM. Waiting for new node."
mposs at ulb.ac.be
Fri Jan 22 05:56:19 EST 2010
I forgot to say that I'm using BCP 1.2.3.
2010/1/22 Michael Poss <mposs at ulb.ac.be>:
> Hi all,
> I'm writing a branch-and-cut-and-price algorithm with BCP.
> My problem has two sets of variables : x variables (core variables,
> binary), and f (algorithmic variables, real).
> Then, I generate the f-variables through column generation and branch
> on the x-variables, so that I did not modify the branching procedure.
> Here is my problem.
> The algorithms adds cuts and variables, and branches correctly a few
> times. Eventually, while trying to branch, the following happens:
> LP: Default select_branching_candidates() executed.
> LP: Starting strong branching:
> LP: Presolving: (3,0.5799,100.0000 / ) [2663.6553,2,3] [3316.9006,64,2]
> LP: Default compare_presolved_branching_objects() executed.
> LP: Deleting 7 rows from the matrix.
> LP: Default set_actions_for_children() executed.
> LP: SB selected candidate 0 out of 1.
> LP: The selected object is: (3,0.5799,100.0000 / ) [2663.6553,2,3] [2622.6500
> LP: Default set_user_data_for_children() executed.
> LP node written in file lpnode.lp
> LP: Returned children to TM. Waiting for new node.
> terminate called after throwing an instance of 'CoinError'
> Any help would be very welcome.
> Michael Poss.
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