Gurobi 5.0.1 (linux64) logging started Fri Jan 18 07:07:23 2013

Optimize a model with 34 rows, 2070 columns and 26041 nonzeros
Presolve removed 12 rows and 60 columns
Presolve time: 0.09s
Presolved: 22 rows, 2010 columns, 24018 nonzeros
Variable types: 2000 continuous, 10 integer (10 binary)

Root relaxation: objective 3.887558e+03, 18 iterations, 0.00 seconds

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

     0     0 3887.55779    0    4          - 3887.55779     -      -    0s
     0     0 3887.55880    0    4          - 3887.55880     -      -    0s
     0     0 3887.55903    0    4          - 3887.55903     -      -    0s
     0     0 3887.57732    0    5          - 3887.57732     -      -    0s
     0     0 3887.57732    0    5          - 3887.57732     -      -    0s
H    0     0                    3887.5966454 3887.57732  0.00%     -    0s

Cutting planes:
  Implied bound: 2
  Flow cover: 1

Explored 0 nodes (58 simplex iterations) in 0.26 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.887596645355e+03, best bound 3.887577319899e+03, gap 0.0005%