Gurobi 5.0.1 (linux64) logging started Fri Jan 18 01:23:15 2013

Optimize a model with 2400 rows, 107100 columns and 233100 nonzeros
Presolve removed 100 rows and 2500 columns
Presolve time: 0.25s
Presolved: 2300 rows, 104600 columns, 229100 nonzeros
Variable types: 104100 continuous, 500 integer (500 binary)

Root relaxation: objective 8.258498e+05, 6063 iterations, 0.41 seconds

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

     0     0 825849.833    0    3          - 825849.833     -      -    0s
H    0     0                    839634.98396 825849.833  1.64%     -    0s
     0     0 825858.298    0    3 839634.984 825858.298  1.64%     -    1s
     0     0 825860.446    0    3 839634.984 825860.446  1.64%     -    1s
     0     0 825866.958    0    3 839634.984 825866.958  1.64%     -    1s
     0     0 825871.192    0    3 839634.984 825871.192  1.64%     -    2s
     0     0 825871.192    0    3 839634.984 825871.192  1.64%     -    2s
     0     0 825873.343    0    3 839634.984 825873.343  1.64%     -    2s
     0     0 825878.859    0    3 839634.984 825878.859  1.64%     -    2s
     0     0 825878.859    0    3 839634.984 825878.859  1.64%     -    3s
     0     0 825878.859    0    3 839634.984 825878.859  1.64%     -    3s
     0     0 825878.859    0    3 839634.984 825878.859  1.64%     -    3s
     0     0 825878.859    0    3 839634.984 825878.859  1.64%     -    4s
     0     0 825878.859    0    3 839634.984 825878.859  1.64%     -    4s
     0     2 825887.070    0    3 839634.984 825887.070  1.64%     -    5s
*    7     3               7    826102.66657 825989.224  0.01%   112    6s

Cutting planes:
  Flow cover: 11

Explored 11 nodes (9301 simplex iterations) in 6.73 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%