Optimize a model with 152 rows, 11476 columns and 22952 nonzeros
Presolve time: 0.03s
Presolved: 152 rows, 11476 columns, 22952 nonzeros
Variable types: 0 continuous, 11476 integer (11476 binary)

Root relaxation: objective 4.451200e+04, 198 iterations, 0.00 seconds

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

     0     0 56834.5000    0   18          - 56834.5000     -      -    0s
     0     0 56868.5000    0   22          - 56868.5000     -      -    0s
     0     0 56956.3333    0   36          - 56956.3333     -      -    0s
     0     0 56978.8333    0   39          - 56978.8333     -      -    0s
     0     0 56990.0000    0   20          - 56990.0000     -      -    0s
     0     0 56990.3333    0   21          - 56990.3333     -      -    0s
     0     0 56990.3333    0   21          - 56990.3333     -      -    0s
     0     2 57008.3333    0   21          - 57008.3333     -      -    0s
*   61    56              49    74472.000000 68411.0000  8.14%   8.0    1s
   261   159     cutoff   28      74472.0000 73295.5000  1.58%   7.2    5s
*  323   134              17    74097.000000 73398.7500  0.94%   6.9    6s
*  500   134              21    73918.000000 73430.7500  0.66%   6.1    9s
*  515   121              13    73880.000000 73464.5000  0.56%   6.1    9s
*  524    87              16    73818.000000 73464.5000  0.48%   6.1    9s
   547    94 73660.7500   17   32 73818.0000 73531.0000  0.39%   6.1   10s
*  551    48              20    73682.000000 73531.0000  0.20%   6.1   10s

Cutting planes:
  User: 104
  Zero half: 19

Explored 611 nodes (4101 simplex iterations) in 10.97 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 7.368200000000e+04, best bound 7.367500000000e+04, gap 0.0095%

Gurobi 5.0.1 (linux64) logging started Sun Nov 25 02:47:49 2012