Gurobi 5.0.1 (linux64) logging started Fri Jan 18 07:07:35 2013

Optimize a model with 4028 rows, 4044 columns and 16082 nonzeros
Presolve removed 1994 rows and 1993 columns
Presolve time: 0.10s
Presolved: 2034 rows, 2051 columns, 6130 nonzeros
Variable types: 1037 continuous, 1014 integer (1014 binary)

Root relaxation: objective 5.737611e+03, 822 iterations, 0.02 seconds

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

     0     0 5737.61109    0    1          - 5737.61109     -      -    0s
H    0     0                    5776.8616192 5737.61109  0.68%     -    0s
     0     0 5753.93427    0    2 5776.86162 5753.93427  0.40%     -    0s
     0     0 5753.93427    0    1 5776.86162 5753.93427  0.40%     -    0s
*    0     0               0    5753.9380267 5753.93803   0.0%     -    0s

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

Explored 0 nodes (1051 simplex iterations) in 0.17 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.753938026653e+03, best bound 5.753938026653e+03, gap 0.0%