Gurobi 5.0.1 (linux64) logging started Fri Jan 18 02:46:18 2013

Optimize a model with 56 rows, 570 columns and 4110 nonzeros
Presolve removed 22 rows and 135 columns
Presolve time: 0.01s
Presolved: 34 rows, 435 columns, 3668 nonzeros
Variable types: 421 continuous, 14 integer (14 binary)

Root relaxation: objective 5.737611e+03, 14 iterations, 0.00 seconds

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

     0     0 5737.61109    0    4          - 5737.61109     -      -    0s
H    0     0                    5753.9349587 5737.61109  0.28%     -    0s
     0     0 5740.60453    0    4 5753.93496 5740.60453  0.23%     -    0s
     0     0 5740.60453    0    4 5753.93496 5740.60453  0.23%     -    0s
     0     0 5752.26815    0    6 5753.93496 5752.26815  0.03%     -    0s
     0     1 5753.92749    0    6 5753.93496 5753.92749  0.00%     -    0s

Cutting planes:
  Gomory: 1
  Flow cover: 1

Explored 1 nodes (78 simplex iterations) in 0.05 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.753934958686e+03, best bound 5.753927487904e+03, gap 0.0001%