Gurobi 5.0.1 (linux64) logging started Fri Jan 18 08:17:08 2013

Optimize a model with 1700 rows, 75650 columns and 651700 nonzeros
Presolve removed 50 rows and 50 columns
Presolve time: 1.50s
Presolved: 1650 rows, 75600 columns, 601650 nonzeros
Variable types: 75100 continuous, 500 integer (500 binary)

Root relaxation: objective 1.650739e+05, 2870 iterations, 0.20 seconds

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

     0     0 165073.856    0    6          - 165073.856     -      -    2s
     0     0 165075.216    0    6          - 165075.216     -      -    2s
     0     0 165075.741    0    7          - 165075.741     -      -    2s
     0     0 165075.741    0    7          - 165075.741     -      -    3s
     0     0 165075.741    0    7          - 165075.741     -      -    3s
     0     0 165075.741    0    7          - 165075.741     -      -    4s
     0     0 165075.741    0    7          - 165075.741     -      -    4s
     0     0 165075.741    0    7          - 165075.741     -      -    4s
     0     0 165075.741    0    7          - 165075.741     -      -    5s
     0     2 165077.830    0    7          - 165077.830     -      -   11s
*   37    15              34    165650.30763 165102.334  0.33%  13.9   13s
H   39    12                    165650.06083 165102.334  0.33%  13.2   13s
*   44    13              35    165649.78588 165102.334  0.33%  12.1   13s
H   66     9                    165622.21580 165468.706  0.09%  12.8   13s
*   74    12              28    165622.14439 165468.706  0.09%  11.7   14s

Cutting planes:
  Flow cover: 5

Explored 79 nodes (4800 simplex iterations) in 14.27 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.656221443881e+05, best bound 1.656142266358e+05, gap 0.0048%