Gurobi 5.0.1 (linux64) logging started Wed Apr 24 03:15:38 2013

Optimize a model with 60214 rows, 59444 columns and 237314 nonzeros
Presolve removed 77 rows and 0 columns
Presolve time: 0.27s
Presolved: 60137 rows, 59444 columns, 237237 nonzeros
Variable types: 59367 continuous, 77 integer (77 binary)

Root relaxation: objective 6.450615e+04, 7698 iterations, 4.87 seconds

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

     0     0 64506.1493    0   52          - 64506.1493     -      -    5s
H    0     0                    100320.00000 64506.1493  35.7%     -    9s
     0     0 79234.8156    0   21 100320.000 79234.8156  21.0%     -   20s
H    0     0                    96628.000000 79234.8156  18.0%     -   21s
     0     0 84752.9982    0   12 96628.0000 84752.9982  12.3%     -   25s
H    0     0                    96081.000000 84752.9982  11.8%     -   25s
     0     0 85935.9188    0    6 96081.0000 85935.9188  10.6%     -   27s
H    0     0                    90963.783783 85935.9188  5.53%     -   27s
H    0     0                    90104.000000 85935.9188  4.63%     -   27s
H    0     0                    86264.000000 85935.9188  0.38%     -   27s
     0     2 85936.5384    0    6 86264.0000 85936.5384  0.38%     -   28s
*    8     4               7    86178.000000 86104.5989  0.09%   158   29s
    14     6 86149.7137    6    2 86178.0000 86129.8464  0.06%   125   30s

Cutting planes:
  Implied bound: 76

Explored 23 nodes (21144 simplex iterations) in 30.35 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 8.617800000000e+04, best bound 8.617800000000e+04, gap 0.0%