Gurobi 5.0.1 (linux64) logging started Wed Dec 19 14:05:03 2012

Optimize a model with 1682 rows, 1681 columns and 7492 nonzeros
Presolve removed 1337 rows and 896 columns
Presolve time: 0.03s
Presolved: 345 rows, 785 columns, 3572 nonzeros
Variable types: 39 continuous, 746 integer (746 binary)

Root relaxation: objective 3.823827e+02, 176 iterations, 0.00 seconds

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

     0     0  382.38273    0   54          -  382.38273     -      -    0s
     0     0  412.02545    0   70          -  412.02545     -      -    0s
     0     0  415.42805    0   60          -  415.42805     -      -    0s
     0     0  417.83145    0   64          -  417.83145     -      -    0s
     0     0  418.58333    0   57          -  418.58333     -      -    0s
     0     0  419.05686    0   67          -  419.05686     -      -    0s
     0     0  419.33333    0   53          -  419.33333     -      -    0s
     0     0  419.33333    0   53          -  419.33333     -      -    0s
     0     0  419.33333    0   55          -  419.33333     -      -    0s
     0     0  419.33333    0   55          -  419.33333     -      -    0s
     0     2  419.33333    0   49          -  419.33333     -      -    0s
* 1001   408              17     453.0000000  438.50830  3.20%  14.6    2s
* 1240   295              25     452.0000000  440.79052  2.48%  15.6    3s

Cutting planes:
  Gomory: 11
  Cover: 31
  Implied bound: 31
  Clique: 8
  MIR: 54
  GUB cover: 7
  Zero half: 77

Explored 1456 nodes (23528 simplex iterations) in 3.39 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.520000000000e+02, best bound 4.520000000000e+02, gap 0.0%