Gurobi 5.0.1 (linux64) logging started Fri Jan 18 02:34:50 2013

Optimize a model with 6600 rows, 110300 columns and 235500 nonzeros
Presolve removed 100 rows and 100 columns
Presolve time: 0.48s
Presolved: 6500 rows, 110200 columns, 230400 nonzeros
Variable types: 105200 continuous, 5000 integer (5000 binary)

Root relaxation: objective 8.258498e+05, 7520 iterations, 0.96 seconds

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

     0     0 825849.833    0    2          - 825849.833     -      -    1s
H    0     0                    851121.35006 825849.833  2.97%     -    1s
H    0     0                    847338.80084 825849.833  2.54%     -    2s
     0     0 825857.685    0    2 847338.801 825857.685  2.54%     -    3s
     0     0 825857.697    0    2 847338.801 825857.697  2.54%     -    3s
     0     0 825864.671    0    2 847338.801 825864.671  2.53%     -    3s
     0     0 825865.104    0    2 847338.801 825865.104  2.53%     -    3s
     0     0 825865.104    0    2 847338.801 825865.104  2.53%     -    4s
     0     2 825865.104    0    2 847338.801 825865.104  2.53%     -    5s
*    8     6               4    826102.66657 826102.667   0.0%   329    7s

Cutting planes:
  Implied bound: 2
  Flow cover: 4

Explored 9 nodes (11895 simplex iterations) in 7.81 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 8.261026665679e+05, best bound 8.261026665679e+05, gap 0.0000%