Gurobi 5.0.1 (linux64) logging started Fri Jan 18 01:40:20 2013

Optimize a model with 128 rows, 344 columns and 882 nonzeros
Presolve removed 115 rows and 303 columns
Presolve time: 0.00s
Presolved: 13 rows, 41 columns, 82 nonzeros
Variable types: 34 continuous, 7 integer (7 binary)

Root relaxation: objective 4.440467e+03, 5 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    1          - 4440.46714     -      -    0s
H    0     0                    4458.9368320 4440.46714  0.41%     -    0s
     0     0 4446.78799    0    1 4458.93683 4446.78799  0.27%     -    0s
     0     0 4458.90868    0    3 4458.93683 4458.90868  0.00%     -    0s

Cutting planes:
  Cover: 2
  Flow cover: 3

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

Optimal solution found (tolerance 1.00e-04)
Best objective 4.458936831960e+03, best bound 4.458908675251e+03, gap 0.0006%