Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:25:26 2013

Optimize a model with 627 rows, 32547 columns and 65037 nonzeros
Presolve time: 0.04s
Presolved: 627 rows, 32547 columns, 65037 nonzeros
Variable types: 32490 continuous, 57 integer (57 binary)

Root relaxation: objective 5.723751e+04, 1222 iterations, 0.03 seconds

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

     0     0 57237.5083    0    4          - 57237.5083     -      -    0s
H    0     0                    57665.000000 57237.5083  0.74%     -    0s
     0     0 57486.4496    0    4 57665.0000 57486.4496  0.31%     -    0s
     0     0 57493.4991    0    2 57665.0000 57493.4991  0.30%     -    0s
     0     0 57493.4991    0    4 57665.0000 57493.4991  0.30%     -    0s
     0     0 57493.4991    0    4 57665.0000 57493.4991  0.30%     -    0s
     0     0 57493.4991    0    2 57665.0000 57493.4991  0.30%     -    0s
     0     0 57493.4991    0    2 57665.0000 57493.4991  0.30%     -    0s
     0     0 57493.4991    0    2 57665.0000 57493.4991  0.30%     -    0s
H    0     0                    57566.000000 57493.4991  0.13%     -    0s
     0     1 57501.8933    0    2 57566.0000 57501.8933  0.11%     -    0s

Cutting planes:
  Implied bound: 77
  Flow cover: 5

Explored 5 nodes (2774 simplex iterations) in 0.72 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.756600000000e+04, best bound 5.756600000000e+04, gap 0.0%