Gurobi 5.0.1 (linux64) logging started Fri Jan 18 01:40:21 2013

Optimize a model with 52 rows, 312 columns and 1906 nonzeros
Presolve removed 22 rows and 86 columns
Presolve time: 0.00s
Presolved: 30 rows, 226 columns, 1650 nonzeros
Variable types: 214 continuous, 12 integer (12 binary)

Root relaxation: objective 5.497312e+03, 12 iterations, 0.00 seconds

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

     0     0 5497.31217    0    3          - 5497.31217     -      -    0s
     0     0 5498.96611    0    6          - 5498.96611     -      -    0s
     0     0 5499.03609    0    6          - 5499.03609     -      -    0s
*    0     0               0    5503.9182722 5503.91827   0.0%     -    0s

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

Explored 0 nodes (37 simplex iterations) in 0.01 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.503918272247e+03, best bound 5.503918272247e+03, gap 0.0%