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
*  280   280             206    85363.000000 60240.5000  29.4%   6.6    1s
*  379   170              74    75281.000000 60251.5000  20.0%   6.2    2s
*  433   212              50    75240.000000 60259.5000  19.9%   6.2    2s
*  583   301             103    74936.000000 60297.5000  19.5%   5.9    2s
*  704   383               9    73682.000000 73682.0000   0.0%   5.7    4s

Cutting planes:
  Gomory: 8
  Cover: 1
  Zero half: 8

Explored 704 nodes (4865 simplex iterations) in 4.06 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 7.368200000000e+04, best bound 7.368200000000e+04, gap 0.0%

Gurobi 5.0.1 (linux64) logging started Sun Nov 25 02:47:44 2012