[Cbc] cbc failure on small IP

[John J Forrest]

Was already OK in trunk.  Fixed in 2.3 svn





Re: [Cbc] cbc failure on small IP

Matthew Galati 
to:
John J Forrest
09/24/2009 05:06 PM


Cc:
Matthew Galati, "cbc at list.coin-or.org", cbc-bounces







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 

  
  
  
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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