Gurobi 5.0.1 (linux64) logging started Wed Apr 24 02:46:24 2013

Optimize a model with 814 rows, 54834 columns and 109594 nonzeros
Presolve time: 0.08s
Presolved: 814 rows, 54834 columns, 109594 nonzeros
Variable types: 54760 continuous, 74 integer (74 binary)

Root relaxation: objective 7.990482e+04, 1940 iterations, 0.06 seconds

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

     0     0 79904.8170    0    8          - 79904.8170     -      -    0s
H    0     0                    81231.000000 79904.8170  1.63%     -    0s
H    0     0                    80306.000000 79904.8170  0.50%     -    0s
     0     0 80045.5365    0    7 80306.0000 80045.5365  0.32%     -    0s
     0     0 80045.5365    0    8 80306.0000 80045.5365  0.32%     -    0s
     0     0 80045.5365    0    7 80306.0000 80045.5365  0.32%     -    0s
     0     0 80066.2732    0    7 80306.0000 80066.2732  0.30%     -    0s
     0     0 80074.7571    0    6 80306.0000 80074.7571  0.29%     -    0s
     0     0 80074.7705    0    5 80306.0000 80074.7705  0.29%     -    0s
H    0     0                    80273.000000 80074.7705  0.25%     -    1s
     0     2 80096.3840    0    3 80273.0000 80096.3840  0.22%     -    1s
*   13     6               9    80248.000000 80114.9270  0.17%  30.1    1s
H   27     4                    80161.000000 80128.3448  0.04%  27.1    1s

Cutting planes:
  Implied bound: 79
  Flow cover: 6

Explored 38 nodes (4974 simplex iterations) in 1.69 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 8.016100000000e+04, best bound 8.015406252521e+04, gap 0.0087%