Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:18:14 2013

Optimize a model with 594 rows, 29214 columns and 58374 nonzeros
Presolve time: 0.04s
Presolved: 594 rows, 29214 columns, 58374 nonzeros
Variable types: 29160 continuous, 54 integer (54 binary)

Root relaxation: objective 6.133259e+04, 1249 iterations, 0.03 seconds

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

     0     0 61332.5870    0    6          - 61332.5870     -      -    0s
H    0     0                    62262.000000 61332.5870  1.49%     -    0s
H    0     0                    61929.000000 61332.5870  0.96%     -    0s
     0     0 61807.0699    0    4 61929.0000 61807.0699  0.20%     -    0s
     0     0 61863.2760    0    5 61929.0000 61863.2760  0.11%     -    0s
     0     0 61863.2760    0    6 61929.0000 61863.2760  0.11%     -    0s
     0     0 61863.2760    0    4 61929.0000 61863.2760  0.11%     -    0s
     0     0 61863.2760    0    5 61929.0000 61863.2760  0.11%     -    0s
     0     0 61870.8456    0    4 61929.0000 61870.8456  0.09%     -    0s
     0     0 61877.1837    0    3 61929.0000 61877.1837  0.08%     -    0s
     0     0 61878.0768    0    2 61929.0000 61878.0768  0.08%     -    0s
     0     0 61924.0951    0    3 61929.0000 61924.0951  0.01%     -    0s

Cutting planes:
  Implied bound: 63
  Flow cover: 2

Explored 0 nodes (2756 simplex iterations) in 0.57 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 6.192900000000e+04, best bound 6.192409513801e+04, gap 0.0079%