Gurobi 5.0.1 (linux64) logging started Fri Jan 18 04:02:49 2013

Optimize a model with 60 rows, 462 columns and 4136 nonzeros
Presolve removed 22 rows and 30 columns
Presolve time: 0.01s
Presolved: 38 rows, 432 columns, 3678 nonzeros
Variable types: 416 continuous, 16 integer (16 binary)

Root relaxation: objective 7.659086e+03, 13 iterations, 0.00 seconds

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

     0     0 7659.08578    0    3          - 7659.08578     -      -    0s
     0     0 7659.83726    0    3          - 7659.83726     -      -    0s
     0     0 7664.38612    0    3          - 7664.38612     -      -    0s
     0     0 7664.63441    0    1          - 7664.63441     -      -    0s
     0     0 7664.63441    0    1          - 7664.63441     -      -    0s
     0     0 7664.64469    0    2          - 7664.64469     -      -    0s
*    0     0               0    7664.6447497 7664.64475   0.0%     -    0s

Cutting planes:
  Gomory: 2
  Implied bound: 1
  Clique: 1
  Flow cover: 3

Explored 0 nodes (78 simplex iterations) in 0.09 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 7.664644749744e+03, best bound 7.664644749744e+03, gap 0.0%