Gurobi 5.0.1 (linux64) logging started Fri Jan 18 01:05:11 2013

Optimize a model with 5400 rows, 104200 columns and 216100 nonzeros
Presolve removed 300 rows and 200 columns
Presolve time: 0.53s
Presolved: 5100 rows, 104000 columns, 211800 nonzeros
Variable types: 102100 continuous, 1900 integer (1900 binary)

Root relaxation: objective 8.951303e+05, 12169 iterations, 1.33 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     -      -    2s
H    0     0                    1195081.8309 895130.293  25.1%     -    2s
H    0     0                    904168.72589 895130.293  1.00%     -    2s
     0     0 895191.950    0    4 904168.726 895191.950  0.99%     -    2s
     0     0 895215.405    0    4 904168.726 895215.405  0.99%     -    3s
     0     0 895237.822    0    4 904168.726 895237.822  0.99%     -    3s
     0     0 895244.268    0    4 904168.726 895244.268  0.99%     -    3s
     0     0 895246.679    0    4 904168.726 895246.679  0.99%     -    3s
     0     0 895249.091    0    4 904168.726 895249.091  0.99%     -    3s
     0     0 895255.601    0    4 904168.726 895255.601  0.99%     -    4s
     0     0 895255.923    0    4 904168.726 895255.923  0.99%     -    4s
     0     0 895259.283    0    4 904168.726 895259.283  0.99%     -    4s
     0     0 895259.667    0    4 904168.726 895259.667  0.99%     -    4s
     0     0 895260.406    0    4 904168.726 895260.406  0.99%     -    5s
     0     0 895260.406    0    4 904168.726 895260.406  0.99%     -    5s
     0     0 895260.642    0    4 904168.726 895260.642  0.99%     -    5s
     0     0 895260.691    0    4 904168.726 895260.691  0.99%     -    5s
     0     0 895260.737    0    4 904168.726 895260.737  0.99%     -    6s
     0     2 895261.948    0    4 904168.726 895261.948  0.99%     -    7s
    19    21 895702.327   19    1 904168.726 895702.327  0.94%  43.9   10s
H   27    17                    899942.46551 895751.690  0.47%  37.9   11s
H   49    19                    898071.08367 895959.179  0.24%  24.4   13s
    54    20 896413.591    3    1 898071.084 896413.591  0.18%  39.8   15s
H   65    24                    898065.67333 896471.884  0.18%  40.4   15s
H   68    25                    898060.66695 896471.884  0.18%  39.0   16s
*   71    25              17    898049.68739 896471.884  0.18%  38.3   16s
*   79     8               8    896949.94038 896546.546  0.04%  43.0   17s
*   87     2              23    896634.43616 896613.796  0.00%  42.4   17s

Cutting planes:
  Flow cover: 29

Explored 88 nodes (16136 simplex iterations) in 17.78 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 8.966344361626e+05, best bound 8.966137959975e+05, gap 0.0023%