Gurobi 5.0.1 (linux64) logging started Wed Dec 19 14:04:01 2012

Optimize a model with 1682 rows, 1681 columns and 7486 nonzeros
Presolve removed 1366 rows and 917 columns
Presolve time: 0.02s
Presolved: 316 rows, 764 columns, 3046 nonzeros
Variable types: 39 continuous, 725 integer (725 binary)

Root relaxation: objective 4.317576e+02, 172 iterations, 0.00 seconds

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

     0     0  431.75757    0   48          -  431.75757     -      -    0s
     0     0  450.00000    0   12          -  450.00000     -      -    0s
H    0     0                     471.0000000  450.00000  4.46%     -    0s
H    0     0                     465.0000000  450.00000  3.23%     -    0s
     0     0  450.00000    0   21  465.00000  450.00000  3.23%     -    0s
     0     0  450.00000    0   39  465.00000  450.00000  3.23%     -    0s
     0     0  450.00000    0   13  465.00000  450.00000  3.23%     -    0s
     0     0  450.33333    0   18  465.00000  450.33333  3.15%     -    0s
     0     0  451.00000    0   17  465.00000  451.00000  3.01%     -    0s
     0     0  451.00000    0   17  465.00000  451.00000  3.01%     -    0s
     0     0  451.00000    0   17  465.00000  451.00000  3.01%     -    0s
     0     0  453.00000    0    6  465.00000  453.00000  2.58%     -    0s
     0     0  453.00000    0    6  465.00000  453.00000  2.58%     -    0s
     0     2  453.00000    0    6  465.00000  453.00000  2.58%     -    0s

Cutting planes:
  Learned: 1
  Gomory: 2
  Cover: 11
  Implied bound: 5
  Clique: 3
  MIR: 5
  GUB cover: 1

Explored 31 nodes (932 simplex iterations) in 0.14 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.650000000000e+02, best bound 4.650000000000e+02, gap 0.0%