Gurobi 5.0.1 (linux64) logging started Wed Apr 24 03:06:10 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 relaxation: objective 6.504935e+04, 6969 iterations, 4.67 seconds

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

     0     0 65049.3459    0   57          - 65049.3459     -      -    5s
H    0     0                    97515.000000 65049.3459  33.3%     -    7s
H    0     0                    89012.000000 65049.3459  26.9%     -   18s
     0     0 76596.4035    0   19 89012.0000 76596.4035  13.9%     -   26s
     0     0 80799.1464    0    9 89012.0000 80799.1464  9.23%     -   30s
H    0     0                    88770.000000 80799.1464  8.98%     -   30s
     0     0 81661.4431    0    3 88770.0000 81661.4431  8.01%     -   31s
H    0     0                    84009.917117 81661.4431  2.80%     -   31s
H    0     0                    83434.000000 81661.4431  2.12%     -   31s
H    0     0                    82098.000000 81661.4431  0.53%     -   31s
     0     2 81661.9186    0    3 82098.0000 81661.9186  0.53%     -   32s
H   11     6                    82080.000000 81689.6077  0.48%   156   34s
*   12     7              11    82060.000000 81689.6077  0.45%   153   34s
    17     7 81768.2848    6    2 82060.0000 81712.8163  0.42%   122   35s
*   21     6              10    81802.000000 81712.8163  0.11%   108   35s

Cutting planes:
  Implied bound: 75

Explored 36 nodes (19045 simplex iterations) in 35.70 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 8.180200000000e+04, best bound 8.179973529412e+04, gap 0.0028%