Gurobi 5.0.1 (linux64) logging started Wed Apr 24 03:10:17 2013

Optimize a model with 60137 rows, 59367 columns and 237237 nonzeros
Presolve removed 3635 rows and 0 columns
Presolve time: 0.37s
Presolved: 56502 rows, 59367 columns, 229967 nonzeros
Variable types: 59290 continuous, 77 integer (77 binary)

Root relaxation: objective 8.082459e+04, 11403 iterations, 2.40 seconds

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

     0     0 80824.5882    0    3          - 80824.5882     -      -    2s
H    0     0                    81543.000000 80824.5882  0.88%     -    3s
H    0     0                    81091.000000 80824.5882  0.33%     -    3s
     0     0 80824.9857    0    5 81091.0000 80824.9857  0.33%     -    3s
     0     0 80824.9857    0    3 81091.0000 80824.9857  0.33%     -    7s
     0     0 80825.0702    0    5 81091.0000 80825.0702  0.33%     -    7s
     0     2 80827.5128    0    5 81091.0000 80827.5128  0.32%     -    8s
*   24     7               6    81079.000000 80915.5088  0.20%  83.8    9s
    34     4 80953.4486    6    1 81079.0000 80953.4486  0.15%  80.1   10s
H   45     7                    81055.000000 80954.4615  0.12%  63.4   10s
*   46     7              18    81025.000000 80954.4615  0.09%  62.1   10s

Cutting planes:
  Gomory: 2

Explored 57 nodes (18931 simplex iterations) in 10.39 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 8.102500000000e+04, best bound 8.102500000000e+04, gap 0.0%