Gurobi 5.0.1 (linux64) logging started Mon Feb  4 19:06:23 2013

Optimize a model with 67599 rows, 5476 columns and 205350 nonzeros
Presolve removed 5449 rows and 2780 columns
Presolve time: 0.57s
Presolved: 62150 rows, 2696 columns, 188859 nonzeros
Variable types: 34 continuous, 2662 integer (2662 binary)
Found heuristic solution: objective 118784.00000

Root relaxation: objective 8.512767e+04, 22681 iterations, 2.45 seconds

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

     0     0 85127.6667    0   14 118784.000 85127.6667  28.3%     -    3s
H    0     0                    85153.000000 85127.6667  0.03%     -    3s
H    0     0                    85143.000000 85127.6667  0.02%     -    3s
H    0     0                    85140.000000 85127.6667  0.01%     -    3s
     0     0 85128.1273    0   33 85140.0000 85128.1273  0.01%     -    3s
     0     0 85128.1273    0   14 85140.0000 85128.1273  0.01%     -    4s
     0     0 85128.1273    0   36 85140.0000 85128.1273  0.01%     -    4s
H    0     0                    85138.000000 85128.1273  0.01%     -    4s
     0     2 85128.2727    0   36 85138.0000 85128.2727  0.01%     -    4s
H    1     2                    85137.000000 85128.2727  0.01%   138    4s
     2     3 85128.2727    0   33 85137.0000 85128.2727  0.01%  69.0    5s

Cutting planes:
  Gomory: 14
  Cover: 1
  MIR: 16
  Zero half: 7

Explored 5 nodes (29310 simplex iterations) in 5.13 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 8.513700000000e+04, best bound 8.512900000000e+04, gap 0.0094%