Gurobi 5.0.1 (linux64) logging started Wed Dec 19 18:39:13 2012

Optimize a model with 3722 rows, 3721 columns and 16617 nonzeros
Presolve removed 3374 rows and 2846 columns
Presolve time: 0.07s
Presolved: 348 rows, 875 columns, 3243 nonzeros
Variable types: 47 continuous, 828 integer (828 binary)

Root relaxation: objective 5.726028e+02, 138 iterations, 0.00 seconds

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

     0     0  572.60279    0   55          -  572.60279     -      -    0s
     0     0  585.18591    0   44          -  585.18591     -      -    0s
     0     0  585.32877    0   26          -  585.32877     -      -    0s
     0     0  585.32877    0   26          -  585.32877     -      -    0s
     0     0  585.32877    0   22          -  585.32877     -      -    0s
     0     0  585.32877    0   24          -  585.32877     -      -    0s
     0     0  585.32877    0   24          -  585.32877     -      -    0s
H    0     0                     614.0000000  585.32877  4.67%     -    0s
     0     0  585.32877    0   52  614.00000  585.32877  4.67%     -    0s
     0     0  585.32877    0   45  614.00000  585.32877  4.67%     -    0s
     0     0  585.34440    0   26  614.00000  585.34440  4.67%     -    0s
     0     0  585.50000    0   24  614.00000  585.50000  4.64%     -    0s
     0     0  585.50000    0   22  614.00000  585.50000  4.64%     -    0s
     0     2  586.00000    0   22  614.00000  586.00000  4.56%     -    0s
*   10     8               9     603.0000000  589.95455  2.16%   6.4    0s

Cutting planes:
  Learned: 2
  Gomory: 5
  Cover: 9
  Implied bound: 4
  Clique: 3
  MIR: 5
  GUB cover: 1
  Zero half: 1

Explored 65 nodes (951 simplex iterations) in 0.22 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 6.030000000000e+02, best bound 6.030000000000e+02, gap 0.0%