Gurobi 5.0.1 (linux64) logging started Fri Jan 18 05:58:08 2013

Optimize a model with 1600 rows, 76750 columns and 650950 nonzeros
Presolve removed 50 rows and 1250 columns
Presolve time: 1.42s
Presolved: 1550 rows, 75500 columns, 600950 nonzeros
Variable types: 75050 continuous, 450 integer (450 binary)

Root relaxation: objective 2.198499e+05, 3149 iterations, 0.26 seconds

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

     0     0 219849.939    0   14          - 219849.939     -      -    2s
     0     0 219851.548    0   14          - 219851.548     -      -    2s
     0     0 219851.600    0   14          - 219851.600     -      -    2s
     0     0 219851.613    0   14          - 219851.613     -      -    2s
     0     0 219851.626    0   14          - 219851.626     -      -    3s
     0     0 219851.626    0   14          - 219851.626     -      -    3s
     0     0 219851.853    0   14          - 219851.853     -      -    4s
     0     0 219851.925    0   14          - 219851.925     -      -    4s
     0     0 219851.925    0   14          - 219851.925     -      -    4s
     0     0 219851.925    0   14          - 219851.925     -      -    5s
     0     2 219852.309    0   14          - 219852.309     -      -   13s
    21    23 220473.577   21   10          - 219880.584     -   35.5   15s
   141   136 225581.248  135    7          - 219880.584     -   14.8   20s
*  190   167             172    225632.66362 219880.584  2.55%  12.6   22s
*  238   151              50    223897.73664 220220.935  1.64%  17.8   24s
   273   180 222464.430   39    7 223897.737 220222.605  1.64%  19.2   25s
*  317   205              82    223717.20810 220222.605  1.56%  17.1   25s
H  435   198                    222313.93872 220231.933  0.94%  20.3   28s
*  514   274             112    222272.60701 220231.933  0.92%  17.5   29s
   556   297 220929.058   15   13 222272.607 220236.693  0.92%  17.9   30s
   608   329 220589.871   31   16 222272.607 220242.492  0.91%  18.3   35s
   619   336 220560.778   12   22 222272.607 220560.778  0.77%  27.0   40s
H  641   317                    222120.64904 221026.177  0.49%  27.5   43s
   674   309 221791.811   24   13 222120.649 221227.887  0.40%  27.5   45s
H  722   284                    222036.09264 221483.566  0.25%  26.8   46s
*  782   245              21    221990.70522 221821.843  0.08%  26.3   48s
*  791   228              26    221990.67135 221821.843  0.08%  26.0   48s

Cutting planes:
  Gomory: 1
  Flow cover: 6

Explored 806 nodes (25695 simplex iterations) in 48.44 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.219906713538e+05, best bound 2.219773380327e+05, gap 0.0060%