Gurobi 5.0.1 (linux64) logging started Fri Jan 18 01:40:22 2013

Optimize a model with 52 rows, 158 columns and 924 nonzeros
Presolve removed 22 rows and 23 columns
Presolve time: 0.00s
Presolved: 30 rows, 135 columns, 780 nonzeros
Variable types: 123 continuous, 12 integer (12 binary)

Root relaxation: objective 7.444602e+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 7444.60178    0    3          - 7444.60178     -      -    0s
     0     0 7448.23111    0    4          - 7448.23111     -      -    0s
     0     0 7448.34622    0    4          - 7448.34622     -      -    0s
     0     0 7458.45269    0    3          - 7458.45269     -      -    0s
     0     0 7459.10745    0    1          - 7459.10745     -      -    0s
     0     0 7459.10745    0    1          - 7459.10745     -      -    0s
H    0     0                    7459.1412119 7459.10745  0.00%     -    0s

Cutting planes:
  Flow cover: 1

Explored 0 nodes (43 simplex iterations) in 0.01 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 7.459141211889e+03, best bound 7.459107445808e+03, gap 0.0005%