Gurobi 5.0.1 (linux64) logging started Wed Apr 24 03:07:20 2013

Optimize a model with 58672 rows, 57912 columns and 231192 nonzeros
Presolve removed 76 rows and 0 columns
Presolve time: 0.27s
Presolved: 58596 rows, 57912 columns, 231116 nonzeros
Variable types: 57836 continuous, 76 integer (76 binary)

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
    6939    6.2945921e+04   2.839683e+03   0.000000e+00      5s
    7745    6.3148616e+04   0.000000e+00   0.000000e+00      7s

Root relaxation: objective 6.314862e+04, 7745 iterations, 6.74 seconds

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

     0     0 63148.6161    0   57          - 63148.6161     -      -    7s
H    0     0                    100177.00000 63148.6161  37.0%     -   11s
     0     0 78746.5737    0   18 100177.000 78746.5737  21.4%     -   20s
H    0     0                    94457.000000 78746.5737  16.6%     -   21s
     0     0 81736.7121    0    6 94457.0000 81736.7121  13.5%     -   23s
H    0     0                    89362.004151 81736.7121  8.53%     -   23s
H    0     0                    87987.000000 81736.7121  7.10%     -   23s
     0     0 82098.9341    0    6 87987.0000 82098.9341  6.69%     -   24s
H    0     0                    82624.000000 82098.9341  0.64%     -   24s
     0     0 82185.3916    0    3 82624.0000 82185.3916  0.53%     -   25s
     0     0 82190.8843    0    2 82624.0000 82190.8843  0.52%     -   25s
     0     2 82193.7674    0    2 82624.0000 82193.7674  0.52%     -   26s
*    6     2               4    82604.000000 82346.9273  0.31%   441   28s

Cutting planes:
  Implied bound: 75

Explored 16 nodes (21120 simplex iterations) in 29.88 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 8.260400000000e+04, best bound 8.259795363177e+04, gap 0.0073%