Gurobi 5.0.1 (linux64) logging started Wed Apr 24 03:02:12 2013

Optimize a model with 836 rows, 57836 columns and 115596 nonzeros
Presolve time: 0.08s
Presolved: 836 rows, 57836 columns, 115596 nonzeros
Variable types: 57760 continuous, 76 integer (76 binary)

Root relaxation: objective 8.318309e+04, 2363 iterations, 0.07 seconds

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

     0     0 83183.0918    0    5          - 83183.0918     -      -    0s
H    0     0                    85750.000000 83183.0918  2.99%     -    0s
H    0     0                    83944.000000 83183.0918  0.91%     -    0s
     0     0 83284.4666    0    4 83944.0000 83284.4666  0.79%     -    0s
     0     0 83299.5388    0    4 83944.0000 83299.5388  0.77%     -    0s
     0     0 83301.5615    0    4 83944.0000 83301.5615  0.77%     -    0s
     0     0 83304.1324    0    4 83944.0000 83304.1324  0.76%     -    0s
     0     0 83304.1455    0    3 83944.0000 83304.1455  0.76%     -    0s
     0     0 83304.1455    0    3 83944.0000 83304.1455  0.76%     -    0s
     0     0 83304.2423    0    3 83944.0000 83304.2423  0.76%     -    0s
     0     0 83305.5366    0    3 83944.0000 83305.5366  0.76%     -    1s
     0     0 83305.5435    0    3 83944.0000 83305.5435  0.76%     -    1s
     0     0 83305.5435    0    3 83944.0000 83305.5435  0.76%     -    1s
     0     0 83305.5435    0    3 83944.0000 83305.5435  0.76%     -    1s
     0     0 83305.5435    0    5 83944.0000 83305.5435  0.76%     -    1s
     0     0 83305.5435    0    4 83944.0000 83305.5435  0.76%     -    1s
     0     0 83305.5435    0    3 83944.0000 83305.5435  0.76%     -    1s
     0     0 83305.5435    0    3 83944.0000 83305.5435  0.76%     -    1s
     0     0 83305.5435    0    3 83944.0000 83305.5435  0.76%     -    2s
     0     0 83305.5435    0    4 83944.0000 83305.5435  0.76%     -    2s
     0     0 83305.5435    0    3 83944.0000 83305.5435  0.76%     -    2s
     0     0 83305.5435    0    3 83944.0000 83305.5435  0.76%     -    2s
     0     0 83305.5435    0    3 83944.0000 83305.5435  0.76%     -    2s
     0     0 83305.5435    0    3 83944.0000 83305.5435  0.76%     -    2s
     0     0 83305.5435    0    3 83944.0000 83305.5435  0.76%     -    2s
     0     0 83305.5435    0    3 83944.0000 83305.5435  0.76%     -    2s
     0     0 83305.5435    0    3 83944.0000 83305.5435  0.76%     -    2s
     0     0 83305.5435    0    3 83944.0000 83305.5435  0.76%     -    2s
     0     2 83306.4488    0    3 83944.0000 83306.4488  0.76%     -    2s
H    9     7                    83937.000000 83387.5044  0.65%  74.3    3s
H   11     9                    83764.000000 83387.5044  0.45%  67.9    3s
H   12     9                    83740.000000 83387.5044  0.42%  66.8    3s
H   14     9                    83591.000000 83387.5044  0.24%  58.9    3s
*   15     7              13    83531.000000 83387.5044  0.17%  57.4    3s

Cutting planes:
  Implied bound: 73
  Flow cover: 8

Explored 28 nodes (6212 simplex iterations) in 3.45 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 8.353100000000e+04, best bound 8.353100000000e+04, gap 0.0%