Gurobi 5.0.1 (linux64) logging started Fri Jan 18 01:16:32 2013

Optimize a model with 3400 rows, 106200 columns and 216100 nonzeros
Presolve removed 200 rows and 300 columns
Presolve time: 0.53s
Presolved: 3200 rows, 105900 columns, 211800 nonzeros
Variable types: 104000 continuous, 1900 integer (1900 binary)

Root relaxation: objective 9.188392e+05, 8280 iterations, 0.62 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     -      -    1s
     0     0 918947.334    0    4          - 918947.334     -      -    1s
     0     0 918995.053    0    3          - 918995.053     -      -    2s
     0     0 918998.824    0    3          - 918998.824     -      -    2s
     0     0 919002.189    0    3          - 919002.189     -      -    2s
     0     0 919002.411    0    3          - 919002.411     -      -    2s
     0     0 919002.973    0    2          - 919002.973     -      -    3s
     0     0 919003.539    0    2          - 919003.539     -      -    3s
     0     0 919004.090    0    2          - 919004.090     -      -    3s
     0     0 919004.249    0    2          - 919004.249     -      -    3s
     0     0 919004.249    0    2          - 919004.249     -      -    4s
H    0     0                    930751.20951 919004.249  1.26%     -    4s
     0     2 919009.377    0    2 930751.210 919009.377  1.26%     -    5s
H   27     8                    919371.65559 919045.926  0.04%  35.3    7s
    77     4 919334.932   25    1 919371.656 919181.224  0.02%  31.2   10s

Cutting planes:
  Flow cover: 21

Explored 107 nodes (11576 simplex iterations) in 10.87 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 9.193716555880e+05, best bound 9.193060312776e+05, gap 0.0071%