Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:55:10 2013

Optimize a model with 48 rows, 182 columns and 742 nonzeros
Presolve removed 22 rows and 74 columns
Presolve time: 0.00s
Presolved: 26 rows, 108 columns, 614 nonzeros
Variable types: 98 continuous, 10 integer (10 binary)

Root relaxation: objective 4.440467e+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 4440.46714    0    3          - 4440.46714     -      -    0s
     0     0 4446.78799    0    3          - 4446.78799     -      -    0s
     0     0 4446.97757    0    3          - 4446.97757     -      -    0s
     0     0 4447.61990    0    5          - 4447.61990     -      -    0s
     0     0 4447.86817    0    5          - 4447.86817     -      -    0s
     0     0 4454.61707    0    3          - 4454.61707     -      -    0s
*    0     0               0    4458.9193833 4458.91938   0.0%     -    0s

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

Explored 0 nodes (51 simplex iterations) in 0.01 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.458919383326e+03, best bound 4.458919383326e+03, gap 0.0%