Gurobi 5.0.1 (linux64) logging started Fri Jan 18 01:03:39 2013

Optimize a model with 5400 rows, 104200 columns and 216100 nonzeros
Presolve removed 300 rows and 200 columns
Presolve time: 0.76s
Presolved: 5100 rows, 104000 columns, 211800 nonzeros
Variable types: 102100 continuous, 1900 integer (1900 binary)

Root relaxation: objective 9.481640e+05, 8845 iterations, 0.81 seconds

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

     0     0 948163.962    0    4          - 948163.962     -      -    1s
     0     0 948318.413    0    4          - 948318.413     -      -    2s
     0     0 948359.216    0    4          - 948359.216     -      -    2s
     0     0 948372.101    0    4          - 948372.101     -      -    3s
     0     0 948372.101    0    4          - 948372.101     -      -    3s
     0     0 948374.210    0    4          - 948374.210     -      -    3s
     0     0 948376.051    0    4          - 948376.051     -      -    3s
     0     0 948378.332    0    4          - 948378.332     -      -    3s
     0     0 948378.749    0    4          - 948378.749     -      -    4s
     0     0 948379.842    0    4          - 948379.842     -      -    4s
     0     0 948380.489    0    4          - 948380.489     -      -    4s
H    0     0                    983075.33122 948380.489  3.53%     -    5s
     0     2 948380.674    0    4 983075.331 948380.674  3.53%     -    6s
    18    20 949298.293   17    1 983075.331 948494.766  3.52%   115   10s
H   19    16                    950677.75506 948494.766  0.23%   109   10s
H   28    21                    950661.37524 948494.766  0.23%  91.2   11s
*   47    28              42    950475.74736 948494.766  0.21%  64.3   12s
    66    27     cutoff    4      950475.747 948955.796  0.16%  94.2   15s
H  105    33                    950306.20619 949473.613  0.09%  77.4   18s
   130    38 950171.100   18    1 950306.206 949679.302  0.07%  66.6   20s
*  160    48              29    950276.23626 949737.995  0.06%  58.1   21s
   325    63 950047.257   26    1 950276.236 949923.159  0.04%  35.6   25s
   522    45 950207.916   25    1 950276.236 950020.652  0.03%  27.3   30s

Cutting planes:
  Flow cover: 18

Explored 703 nodes (25730 simplex iterations) in 34.83 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 9.502762362556e+05, best bound 9.502083829698e+05, gap 0.0071%