Gurobi 5.0.1 (linux64) logging started Fri Jan 18 07:39:56 2013

Optimize a model with 340 rows, 21600 columns and 262210 nonzeros
Presolve removed 10 rows and 490 columns
Presolve time: 0.96s
Presolved: 330 rows, 21110 columns, 242210 nonzeros
Variable types: 21010 continuous, 100 integer (100 binary)

Root relaxation: objective 1.836170e+04, 147 iterations, 0.01 seconds

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

     0     0 18361.7044    0    8          - 18361.7044     -      -    1s
H    0     0                    18425.444976 18361.7044  0.35%     -    1s
     0     0 18361.7577    0    8 18425.4450 18361.7577  0.35%     -    1s
     0     0 18381.2294    0    8 18425.4450 18381.2294  0.24%     -    1s
     0     0 18413.1266    0   12 18425.4450 18413.1266  0.07%     -    2s
     0     0 18416.4767    0   18 18425.4450 18416.4767  0.05%     -    2s
     0     0 18416.8307    0   11 18425.4450 18416.8307  0.05%     -    2s
     0     0 18416.8307    0   11 18425.4450 18416.8307  0.05%     -    2s
     0     0 18416.8307    0   11 18425.4450 18416.8307  0.05%     -    3s
     0     0 18416.8351    0   11 18425.4450 18416.8351  0.05%     -    3s
     0     0 18416.8351    0   11 18425.4450 18416.8351  0.05%     -    3s
     0     2 18416.8351    0   11 18425.4450 18416.8351  0.05%     -    4s
*   39    25              15    18421.141315 18417.8740  0.02%   6.9    4s
*   62    10              17    18418.712754 18418.2034  0.00%   5.7    4s

Cutting planes:
  Flow cover: 1

Explored 63 nodes (1559 simplex iterations) in 4.33 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.841871275403e+04, best bound 1.841820338533e+04, gap 0.0028%