Gurobi 5.0.1 (linux64) logging started Fri Jan 18 03:55:56 2013

Optimize a model with 2800 rows, 111000 columns and 292500 nonzeros
Presolve removed 100 rows and 100 columns
Presolve time: 0.39s
Presolved: 2700 rows, 110900 columns, 282400 nonzeros
Variable types: 110200 continuous, 700 integer (700 binary)

Root relaxation: objective 9.053666e+05, 5736 iterations, 0.68 seconds

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

     0     0 905366.638    0    6          - 905366.638     -      -    1s
     0     0 905391.881    0    6          - 905391.881     -      -    2s
     0     0 905414.270    0    6          - 905414.270     -      -    2s
     0     0 905416.000    0    6          - 905416.000     -      -    2s
     0     0 905416.202    0    6          - 905416.202     -      -    3s
     0     0 905419.567    0    6          - 905419.567     -      -    3s
     0     0 905420.224    0    6          - 905420.224     -      -    3s
     0     0 905420.363    0    6          - 905420.363     -      -    4s
     0     0 905420.516    0    6          - 905420.516     -      -    4s
     0     0 905420.516    0    6          - 905420.516     -      -    5s
     0     0 905420.516    0    6          - 905420.516     -      -    6s
     0     2 905479.226    0    6          - 905479.226     -      -   11s
    11    13 907662.577   10    6          - 905634.164     -    147   15s
*   35    15              34    908018.35356 905634.164  0.26%  57.3   17s
    54    21 906593.972    4    3 908018.354 906469.912  0.17%  68.1   20s
    82    24 907875.749    8    6 908018.354 907291.272  0.08%  83.7   25s

Cutting planes:
  Flow cover: 15

Explored 130 nodes (18329 simplex iterations) in 28.67 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 9.080183535562e+05, best bound 9.079561461781e+05, gap 0.0069%