Gurobi 5.0.1 (linux64) logging started Wed Apr 24 03:29:07 2013

Optimize a model with 869 rows, 62489 columns and 124899 nonzeros
Presolve time: 0.09s
Presolved: 869 rows, 62489 columns, 124899 nonzeros
Variable types: 62410 continuous, 79 integer (79 binary)

Root relaxation: objective 8.453722e+04, 2097 iterations, 0.07 seconds

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

     0     0 84537.2208    0    9          - 84537.2208     -      -    0s
H    0     0                    90718.000000 84537.2208  6.81%     -    0s
H    0     0                    85547.000000 84537.2208  1.18%     -    0s
     0     0 84883.8283    0    6 85547.0000 84883.8283  0.78%     -    0s
     0     0 84918.6902    0    5 85547.0000 84918.6902  0.73%     -    0s
     0     0 84918.6902    0    9 85547.0000 84918.6902  0.73%     -    0s
     0     0 84918.6902    0    5 85547.0000 84918.6902  0.73%     -    1s
     0     0 84918.6902    0    7 85547.0000 84918.6902  0.73%     -    1s
     0     0 84922.5959    0    4 85547.0000 84922.5959  0.73%     -    1s
     0     0 84932.0808    0    5 85547.0000 84932.0808  0.72%     -    1s
     0     0 84933.0928    0    3 85547.0000 84933.0928  0.72%     -    1s
     0     2 84942.5526    0    3 85547.0000 84942.5526  0.71%     -    1s
H    8     8                    85516.000000 85216.2668  0.35%  98.9    1s
*   10     8               9    85383.000000 85216.2668  0.20%  83.4    1s

Cutting planes:
  Implied bound: 99
  Flow cover: 5

Explored 22 nodes (5568 simplex iterations) in 2.10 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 8.538300000000e+04, best bound 8.537926625275e+04, gap 0.0044%