[Cbc] cbc failure on small IP

[Matthew Galati]

in some release? or just trunk?




> should be fixed
>
>
>    *[Cbc] cbc failure on small IP*
>  *Matthew Galati * to: cbc at list.coin-or.org
> 09/24/2009 11:32 AM
>
>    Sent by: *cbc-bounces at list.coin-or.org*
>
>
>
> ------------------------------
>
>
>
> https://projects.coin-or.org/Cbc/ticket/81
>
> http://coral.ie.lehigh.edu/~magh/tmp/PRICE_AND_CUT_subProb_relax.n296.c0.p8.b0.lp<http://coral.ie.lehigh.edu/%7Emagh/tmp/PRICE_AND_CUT_subProb_relax.n296.c0.p8.b0.lp>
>
>
>
> Coin Cbc and Clp Solver version 2.3stable, build Sep 23 2009
> command line - ./bin/cbc
> Decomp/examples/MILP/PRICE_AND_CUT_subProb_relax.n296.c0.p8.b0.lp (default
> strategy 1)
> Continuous objective value is -8339.48 - 0.00 seconds
> Cgl0003I 0 fixed, 0 tightened bounds, 3 strengthened rows, 0 substitutions
> Cgl0003I 0 fixed, 0 tightened bounds, 3 strengthened rows, 0 substitutions
> Cgl0003I 0 fixed, 0 tightened bounds, 2 strengthened rows, 0 substitutions
> Cgl0003I 0 fixed, 0 tightened bounds, 1 strengthened rows, 0 substitutions
> Cgl0004I processed model has 6 rows, 17 columns (17 integer) and 26
> elements
> Cbc0038I Pass   1: suminf.    0.39750 (2) obj. -7448.18 iterations 3
> Cbc0038I Solution found of -7073.18
> Cbc0038I Branch and bound needed to clear up 1 general integers
>
> ....
>
>
> cbc: ../../../Clp/src/ClpSimplexDual.cpp:1411: int
> ClpSimplexDual::whileIterating(double*&, int): Assertion
> `fabs(dualOut_)<1.0e50' failed.
> Aborted_______________________________________________
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