Gurobi 5.0.1 (linux64) logging started Thu Jan 17 23:37:02 2013

Optimize a model with 1600 rows, 100600 columns and 201400 nonzeros
Presolve removed 100 rows and 100 columns
Presolve time: 0.33s
Presolved: 1500 rows, 100500 columns, 201100 nonzeros
Variable types: 100400 continuous, 100 integer (100 binary)

Root relaxation: objective 7.672886e+05, 6019 iterations, 0.65 seconds

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

     0     0 767288.564    0    3          - 767288.564     -      -    1s
H    0     0                    807219.05719 767288.564  4.95%     -    1s
H    0     0                    782410.82202 767288.564  1.93%     -    1s
     0     0 767325.680    0    2 782410.822 767325.680  1.93%     -    2s
     0     0 767325.680    0    2 782410.822 767325.680  1.93%     -    2s
     0     0 767325.680    0    2 782410.822 767325.680  1.93%     -    3s
     0     0 767325.680    0    2 782410.822 767325.680  1.93%     -    3s
     0     0 767325.680    0    2 782410.822 767325.680  1.93%     -    4s
     0     0 767325.680    0    2 782410.822 767325.680  1.93%     -    4s
     0     0 767325.680    0    2 782410.822 767325.680  1.93%     -    5s
     0     2 767333.927    0    2 782410.822 767333.927  1.93%     -    6s
*   13     5              12    768264.46012 767804.496  0.06%  85.6    8s

Cutting planes:
  Flow cover: 9

Explored 19 nodes (8576 simplex iterations) in 9.22 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 7.682644601246e+05, best bound 7.682013911906e+05, gap 0.0082%