Gurobi 5.0.1 (linux64) logging started Wed Dec 19 14:01:14 2012

Optimize a model with 902 rows, 840 columns and 3660 nonzeros
Presolve removed 122 rows and 44 columns
Presolve time: 0.02s
Presolved: 780 rows, 796 columns, 3420 nonzeros
Variable types: 378 continuous, 418 integer (418 binary)

Root relaxation: objective 1.784228e+02, 1008 iterations, 0.02 seconds

    Nodes    |    Current Node    |     Objective Bounds      |     Work
 Expl Unexpl |  Obj  Depth IntInf | Incumbent    BestBd   Gap | It/Node Time

     0     0  178.42276    0   37          -  178.42276     -      -    0s
     0     0  207.24444    0   40          -  207.24444     -      -    0s
     0     0  212.62853    0   49          -  212.62853     -      -    0s
     0     0  227.51202    0   38          -  227.51202     -      -    0s
     0     0  227.67299    0   48          -  227.67299     -      -    0s
     0     2  227.67767    0   48          -  227.67767     -      -    0s
*  555   190              25     295.0000000  268.79969  8.88%  38.8    1s
*  562   164              17     289.0000000  268.89086  6.96%  38.6    1s
*  652   149              24     288.0000000  272.16156  5.50%  36.3    1s

Cutting planes:
  Gomory: 3
  Cover: 70
  Implied bound: 30
  Flow cover: 21
  GUB cover: 1

Explored 986 nodes (32005 simplex iterations) in 1.83 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.880000000000e+02, best bound 2.880000000000e+02, gap 0.0%