Gurobi 5.0.1 (linux64) logging started Thu Jan 17 23:53:53 2013

Optimize a model with 1900 rows, 101700 columns and 204100 nonzeros
Presolve removed 200 rows and 300 columns
Presolve time: 0.47s
Presolved: 1700 rows, 101400 columns, 202800 nonzeros
Variable types: 101000 continuous, 400 integer (400 binary)

Root relaxation: objective 7.672886e+05, 9096 iterations, 0.66 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                    926712.22000 767288.564  17.2%     -    1s
H    0     0                    775398.43744 767288.564  1.05%     -    2s
     0     0 767326.495    0    2 775398.437 767326.495  1.04%     -    2s
     0     0 767326.495    0    2 775398.437 767326.495  1.04%     -    2s
     0     0 767326.495    0    2 775398.437 767326.495  1.04%     -    2s
     0     0 767326.495    0    2 775398.437 767326.495  1.04%     -    3s
     0     0 767326.495    0    2 775398.437 767326.495  1.04%     -    3s
     0     0 767326.495    0    2 775398.437 767326.495  1.04%     -    3s
     0     0 767326.495    0    2 775398.437 767326.495  1.04%     -    4s
     0     2 767335.589    0    2 775398.437 767335.589  1.04%     -    4s
     2     4 767839.283    2    1 775398.437 767769.836  0.98%   327    5s
*   17     5              16    768324.01239 767812.496  0.07%  71.5    6s

Cutting planes:
  Flow cover: 7

Explored 36 nodes (12270 simplex iterations) in 7.69 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 7.683240123860e+05, best bound 7.683240123860e+05, gap 0.0%