Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:01:12 2013

Optimize a model with 2000 rows, 102100 columns and 206700 nonzeros
Presolve removed 100 rows and 700 columns
Presolve time: 0.45s
Presolved: 1900 rows, 101400 columns, 205700 nonzeros
Variable types: 101100 continuous, 300 integer (300 binary)

Root relaxation: objective 8.258498e+05, 6081 iterations, 0.70 seconds

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

     0     0 825849.833    0    1          - 825849.833     -      -    1s
H    0     0                    830634.24438 825849.833  0.58%     -    1s
     0     0 825859.486    0    1 830634.244 825859.486  0.57%     -    1s
     0     0 825860.753    0    1 830634.244 825860.753  0.57%     -    2s
     0     0 825870.882    0    1 830634.244 825870.882  0.57%     -    2s
     0     0 825874.932    0    1 830634.244 825874.932  0.57%     -    2s
     0     0 825874.932    0    1 830634.244 825874.932  0.57%     -    3s
     0     0 825874.932    0    1 830634.244 825874.932  0.57%     -    3s
     0     0 825874.932    0    1 830634.244 825874.932  0.57%     -    3s
     0     0 825874.932    0    1 830634.244 825874.932  0.57%     -    4s
     0     0 825874.932    0    1 830634.244 825874.932  0.57%     -    4s
     0     0 825874.932    0    1 830634.244 825874.932  0.57%     -    5s
     0     2 825888.833    0    1 830634.244 825888.833  0.57%     -    6s
*    4     3               4    826102.66657 825989.224  0.01%   108    6s

Cutting planes:
  Flow cover: 9

Explored 6 nodes (7807 simplex iterations) in 6.80 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%