Gurobi 5.0.1 (linux64) logging started Fri Jan 18 03:48:24 2013

Optimize a model with 2800 rows, 111000 columns and 292500 nonzeros
Presolve removed 100 rows and 100 columns
Presolve time: 0.36s
Presolved: 2700 rows, 110900 columns, 282400 nonzeros
Variable types: 110200 continuous, 700 integer (700 binary)

Root relaxation: objective 8.570461e+05, 6470 iterations, 0.57 seconds

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

     0     0 857046.104    0    3          - 857046.104     -      -    1s
     0     0 857083.411    0    3          - 857083.411     -      -    1s
     0     0 857086.968    0    3          - 857086.968     -      -    1s
     0     0 857089.884    0    5          - 857089.884     -      -    2s
     0     0 857089.884    0    5          - 857089.884     -      -    2s
     0     0 857090.367    0    5          - 857090.367     -      -    2s
     0     0 857091.270    0    5          - 857091.270     -      -    2s
     0     0 857091.270    0    5          - 857091.270     -      -    3s
     0     0 857091.693    0    5          - 857091.693     -      -    3s
     0     0 857091.851    0    5          - 857091.851     -      -    4s
     0     0 857091.851    0    5          - 857091.851     -      -    4s
     0     2 857122.487    0    5          - 857122.487     -      -    8s
     5     7 858414.919    5    6          - 858246.035     -    228   10s
    24    26 859396.589   24    4          - 858246.035     -   89.1   15s
    56    58 860502.509   56    3          - 858246.035     -   59.7   20s
    99   101 863041.796   98    3          - 858246.035     -   47.1   25s
*  203   135             202    863144.71451 858246.035  0.57%  23.8   28s
   212   134 858686.519    7    3 863144.715 858264.632  0.57%  25.3   30s
H  233    23                    859374.12969 858264.632  0.13%  25.5   33s
*  243    23              36    859283.49109 858264.632  0.12%  25.1   34s
   273    34 859271.995   29    3 859283.491 858296.821  0.11%  24.6   35s
H  314    31                    859032.17956 858451.167  0.07%  23.4   36s
*  324    35              40    859006.55282 858451.167  0.06%  22.8   36s
   405    30     cutoff   17      859006.553 858836.902  0.02%  23.9   40s

Cutting planes:
  Flow cover: 8

Explored 423 nodes (18165 simplex iterations) in 40.49 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 8.590065528169e+05, best bound 8.589222838452e+05, gap 0.0098%