Gurobi 5.0.1 (linux64) logging started Thu Jan 17 23:54:13 2013

Optimize a model with 1900 rows, 101700 columns and 204100 nonzeros
Presolve removed 200 rows and 300 columns
Presolve time: 0.76s
Presolved: 1700 rows, 101400 columns, 202800 nonzeros
Variable types: 101000 continuous, 400 integer (400 binary)

Root relaxation: objective 8.951303e+05, 7638 iterations, 0.93 seconds

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

     0     0 895130.293    0    4          - 895130.293     -      -    1s
H    0     0                    960175.85629 895130.293  6.77%     -    2s
H    0     0                    898400.46551 895130.293  0.36%     -    2s
     0     0 895191.950    0    4 898400.466 895191.950  0.36%     -    2s
     0     0 895214.288    0    4 898400.466 895214.288  0.35%     -    3s
     0     0 895241.518    0    4 898400.466 895241.518  0.35%     -    3s
     0     0 895246.319    0    4 898400.466 895246.319  0.35%     -    3s
     0     0 895246.319    0    4 898400.466 895246.319  0.35%     -    4s
     0     0 895254.681    0    4 898400.466 895254.681  0.35%     -    4s
     0     0 895255.909    0    4 898400.466 895255.909  0.35%     -    4s
     0     0 895257.507    0    4 898400.466 895257.507  0.35%     -    5s
     0     0 895258.185    0    4 898400.466 895258.185  0.35%     -    5s
     0     0 895258.533    0    4 898400.466 895258.533  0.35%     -    5s
     0     0 895259.328    0    4 898400.466 895259.328  0.35%     -    6s
     0     0 895260.509    0    4 898400.466 895260.509  0.35%     -    6s
     0     0 895260.571    0    4 898400.466 895260.571  0.35%     -    6s
     0     0 895260.571    0    4 898400.466 895260.571  0.35%     -    7s
     0     0 895260.571    0    4 898400.466 895260.571  0.35%     -    7s
     0     0 895260.577    0    4 898400.466 895260.577  0.35%     -    7s
     0     0 895260.577    0    4 898400.466 895260.577  0.35%     -    8s
     0     2 895263.916    0    4 898400.466 895263.916  0.35%     -    9s
     3     4 895550.054    3    1 898400.466 895550.054  0.32%  84.0   10s
H   27     2                    897058.33532 895767.192  0.14%  34.1   13s
    46     3 896498.161   46    1 897058.335 895767.192  0.14%  28.4   15s
    88     8 896894.556    3    1 897058.335 896545.705  0.06%  46.8   20s
*   97     4              12    896949.94038 896545.705  0.05%  47.2   20s
*  104     2              13    896634.43616 896602.796  0.00%  49.7   22s

Cutting planes:
  Flow cover: 27

Explored 105 nodes (13509 simplex iterations) in 22.01 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 8.966344361626e+05, best bound 8.966027959975e+05, gap 0.0035%