Gurobi 5.0.1 (linux64) logging started Fri Jan 18 04:16:48 2013

Optimize a model with 600 rows, 14440 columns and 96340 nonzeros
Presolve removed 20 rows and 2260 columns
Presolve time: 0.22s
Presolved: 580 rows, 12180 columns, 88340 nonzeros
Variable types: 12020 continuous, 160 integer (160 binary)

Root relaxation: objective 4.636776e+04, 569 iterations, 0.02 seconds

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

     0     0 46367.7551    0   10          - 46367.7551     -      -    0s
     0     0 46369.1100    0   10          - 46369.1100     -      -    0s
     0     0 46369.1100    0   10          - 46369.1100     -      -    0s
     0     2 46375.2391    0   10          - 46375.2391     -      -    1s
*   69    63              56    46942.437923 46388.0967  1.18%   7.9    1s
*   92    19              17    46698.732559 46392.6001  0.66%   7.8    1s
*  134    23              15    46687.764498 46398.3430  0.62%   7.8    1s
*  148    17              10    46654.628907 46441.8456  0.46%   7.8    1s
*  233    17              11    46653.827692 46649.6347  0.01%   6.1    1s

Cutting planes:
  Flow cover: 2

Explored 234 nodes (2329 simplex iterations) in 2.00 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.665382769172e+04, best bound 4.664963469032e+04, gap 0.0090%