Gurobi 5.0.1 (linux64) logging started Fri Jan 18 01:04:51 2013

Optimize a model with 5400 rows, 104200 columns and 216100 nonzeros
Presolve removed 300 rows and 200 columns
Presolve time: 0.48s
Presolved: 5100 rows, 104000 columns, 211800 nonzeros
Variable types: 102100 continuous, 1900 integer (1900 binary)

Root relaxation: objective 7.672886e+05, 11458 iterations, 1.22 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
     0     0 767329.290    0    2          - 767329.290     -      -    2s
H    0     0                    779795.13187 767329.290  1.60%     -    2s
H    0     0                    777448.83957 767329.290  1.30%     -    3s
     0     0 767329.290    0    2 777448.840 767329.290  1.30%     -    3s
     0     0 767329.290    0    2 777448.840 767329.290  1.30%     -    3s
     0     0 767329.290    0    2 777448.840 767329.290  1.30%     -    3s
     0     0 767329.290    0    2 777448.840 767329.290  1.30%     -    4s
     0     0 767329.290    0    2 777448.840 767329.290  1.30%     -    4s
     0     2 767338.265    0    2 777448.840 767338.265  1.30%     -    5s
H    7     5                    768469.64459 767638.484  0.11%   142    6s
*   14     6              13    768346.06878 767638.484  0.09%  83.4    6s

Cutting planes:
  Flow cover: 7

Explored 120 nodes (13550 simplex iterations) in 8.73 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 7.683460687757e+05, best bound 7.682869082914e+05, gap 0.0077%