Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:06:07 2013

Optimize a model with 517 rows, 22137 columns and 44227 nonzeros
Presolve time: 0.03s
Presolved: 517 rows, 22137 columns, 44227 nonzeros
Variable types: 22090 continuous, 47 integer (47 binary)

Root relaxation: objective 5.391189e+04, 1105 iterations, 0.03 seconds

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

     0     0 53911.8928    0    3          - 53911.8928     -      -    0s
H    0     0                    55423.000000 53911.8928  2.73%     -    0s
     0     0 54181.9434    0    4 55423.0000 54181.9434  2.24%     -    0s
     0     0 54244.2995    0    3 55423.0000 54244.2995  2.13%     -    0s
     0     0 54252.7532    0    4 55423.0000 54252.7532  2.11%     -    0s
     0     0 54255.4758    0    5 55423.0000 54255.4758  2.11%     -    0s
     0     0 54258.9383    0    3 55423.0000 54258.9383  2.10%     -    0s
     0     0 54259.4275    0    4 55423.0000 54259.4275  2.10%     -    0s
H    0     0                    54423.000000 54259.4275  0.30%     -    0s
     0     0 54259.6109    0    5 54423.0000 54259.6109  0.30%     -    0s
     0     0 54260.9959    0    4 54423.0000 54260.9959  0.30%     -    0s
     0     0 54261.1019    0    5 54423.0000 54261.1019  0.30%     -    0s
     0     0 54261.1669    0    4 54423.0000 54261.1669  0.30%     -    0s
     0     0 54261.5306    0    4 54423.0000 54261.5306  0.30%     -    0s
     0     0 54261.5306    0    4 54423.0000 54261.5306  0.30%     -    0s
     0     0 54262.2588    0    3 54423.0000 54262.2588  0.30%     -    0s
     0     2 54272.6022    0    3 54423.0000 54272.6022  0.28%     -    0s

Cutting planes:
  Implied bound: 60
  Flow cover: 4

Explored 6 nodes (1574 simplex iterations) in 0.68 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.442300000000e+04, best bound 5.442275000000e+04, gap 0.0005%