Gurobi 5.0.1 (linux64) logging started Fri Jan 18 04:16:52 2013

Optimize a model with 600 rows, 14440 columns and 96340 nonzeros
Presolve removed 20 rows and 2260 columns
Presolve time: 0.17s
Presolved: 580 rows, 12180 columns, 88340 nonzeros
Variable types: 12020 continuous, 160 integer (160 binary)

Root relaxation: objective 4.642213e+04, 627 iterations, 0.02 seconds

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

     0     0 46422.1265    0   15          - 46422.1265     -      -    0s
     0     0 46423.3217    0   10          - 46423.3217     -      -    0s
     0     0 46423.3286    0   15          - 46423.3286     -      -    0s
     0     0 46423.3286    0   15          - 46423.3286     -      -    0s
     0     0 46423.3286    0   15          - 46423.3286     -      -    0s
     0     0 46423.3286    0   15          - 46423.3286     -      -    0s
     0     0 46423.3286    0   15          - 46423.3286     -      -    0s
     0     2 46426.1363    0   15          - 46426.1363     -      -    1s
*   73    51              67    46902.266543 46431.4856  1.00%   7.7    1s
H  102    37                    46825.788379 46451.2763  0.80%   7.9    2s
*  144    36              16    46748.032375 46458.4626  0.62%   8.0    2s

Cutting planes:
  Flow cover: 7

Explored 208 nodes (3520 simplex iterations) in 2.38 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.674803237480e+04, best bound 4.674367698075e+04, gap 0.0093%