Gurobi 5.0.1 (linux64) logging started Wed Dec 19 14:04:44 2012

Optimize a model with 1762 rows, 1681 columns and 10111 nonzeros
Presolve removed 824 rows and 992 columns
Presolve time: 0.04s
Presolved: 938 rows, 689 columns, 11741 nonzeros
Variable types: 37 continuous, 652 integer (652 binary)

Root relaxation: objective 4.370081e+02, 167 iterations, 0.00 seconds

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

     0     0  437.00805    0   54          -  437.00805     -      -    0s
     0     0  447.23879    0   37          -  447.23879     -      -    0s
     0     0  447.56827    0   34          -  447.56827     -      -    0s
     0     0  447.69574    0   37          -  447.69574     -      -    0s
     0     0  447.69574    0   37          -  447.69574     -      -    0s
     0     0  447.69574    0   35          -  447.69574     -      -    0s
     0     2  449.86240    0   35          -  449.86240     -      -    0s
*  172    97              32     488.0000000  461.47813  5.43%   8.3    0s
H  316    80                     481.0000000  464.83110  3.36%   9.6    0s
H  343    71                     477.0000000  465.40866  2.43%  10.0    0s
H  370    44                     474.0000000  466.00000  1.69%  10.0    0s

Cutting planes:
  Learned: 5
  Gomory: 1
  Cover: 35
  Implied bound: 4
  Clique: 3
  MIR: 8
  GUB cover: 3
  Zero half: 1

Explored 523 nodes (5690 simplex iterations) in 0.75 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.740000000000e+02, best bound 4.740000000000e+02, gap 0.0%