Gurobi 5.0.1 (linux64) logging started Fri Jan 18 06:09:01 2013

Optimize a model with 1600 rows, 50600 columns and 326550 nonzeros
Presolve removed 50 rows and 50 columns
Presolve time: 0.73s
Presolved: 1550 rows, 50550 columns, 301500 nonzeros
Variable types: 50100 continuous, 450 integer (450 binary)

Root relaxation: objective 2.246016e+05, 2852 iterations, 0.19 seconds

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

     0     0 224601.597    0    3          - 224601.597     -      -    1s
     0     0 224601.597    0    3          - 224601.597     -      -    1s
     0     0 224601.597    0    3          - 224601.597     -      -    2s
     0     0 224601.597    0    3          - 224601.597     -      -    2s
     0     0 224601.597    0    3          - 224601.597     -      -    2s
     0     2 224601.597    0    3          - 224601.597     -      -    8s
    15    17 224862.382   14    3          - 224691.466     -   34.1   10s
*  132    36             131    225048.58599 224691.466  0.16%   5.6   13s
*  139     0               5    224847.24808 224847.248   0.0%   6.7   13s

Cutting planes:
  Flow cover: 3

Explored 140 nodes (4521 simplex iterations) in 13.77 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.248472480793e+05, best bound 2.248472480793e+05, gap 0.0%