Gurobi 5.0.1 (linux64) logging started Thu Jan 17 23:25:52 2013

Optimize a model with 1600 rows, 100800 columns and 201700 nonzeros
Presolve removed 200 rows and 300 columns
Presolve time: 0.31s
Presolved: 1400 rows, 100500 columns, 201000 nonzeros
Variable types: 100400 continuous, 100 integer (100 binary)

Root relaxation: objective 9.188392e+05, 6202 iterations, 0.48 seconds

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

     0     0 918839.221    0    4          - 918839.221     -      -    0s
H    0     0                    943391.91312 918839.221  2.60%     -    1s
H    0     0                    932630.47933 918839.221  1.48%     -    1s
     0     0 918947.412    0    4 932630.479 918947.412  1.47%     -    1s
     0     0 918991.001    0    3 932630.479 918991.001  1.46%     -    1s
     0     0 918993.290    0    3 932630.479 918993.290  1.46%     -    1s
     0     0 919000.158    0    2 932630.479 919000.158  1.46%     -    1s
     0     0 919000.158    0    2 932630.479 919000.158  1.46%     -    2s
     0     0 919000.158    0    2 932630.479 919000.158  1.46%     -    2s
     0     0 919000.158    0    2 932630.479 919000.158  1.46%     -    2s
H    0     0                    921629.02642 919000.158  0.29%     -    3s
     0     0 919000.250    0    2 921629.026 919000.250  0.29%     -    3s
     0     0 919000.250    0    2 921629.026 919000.250  0.29%     -    3s
     0     2 919019.186    0    2 921629.026 919019.186  0.28%     -    3s
     7     8 919233.910    6    1 921629.026 919036.418  0.28%   124    5s
*   12     4              11    919347.86857 919036.418  0.03%  76.7    5s

Cutting planes:
  Flow cover: 19

Explored 28 nodes (8858 simplex iterations) in 6.25 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 9.193478685680e+05, best bound 9.193055196182e+05, gap 0.0046%