Gurobi 5.0.1 (linux64) logging started Fri Jan 18 07:39:37 2013

Optimize a model with 340 rows, 21600 columns and 262210 nonzeros
Presolve removed 10 rows and 490 columns
Presolve time: 0.69s
Presolved: 330 rows, 21110 columns, 242210 nonzeros
Variable types: 21010 continuous, 100 integer (100 binary)

Root relaxation: objective 2.387367e+04, 273 iterations, 0.02 seconds

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

     0     0 23873.6700    0    8          - 23873.6700     -      -    0s
     0     0 23873.7405    0    8          - 23873.7405     -      -    1s
     0     0 23939.7858    0    7          - 23939.7858     -      -    1s
     0     0 23939.7858    0    7          - 23939.7858     -      -    1s
     0     2 23939.7994    0    7          - 23939.7994     -      -    3s
*   31    15              28    23952.959104 23939.7994  0.05%   6.6    3s
*   42     6               8    23950.729889 23947.7193  0.01%   5.3    3s

Cutting planes:
  Flow cover: 1

Explored 52 nodes (961 simplex iterations) in 4.04 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.395072988868e+04, best bound 2.394947353318e+04, gap 0.0052%