Gurobi 5.0.1 (linux64) logging started Fri Jan 18 02:46:20 2013

Optimize a model with 56 rows, 260 columns and 1930 nonzeros
Presolve removed 22 rows and 23 columns
Presolve time: 0.00s
Presolved: 34 rows, 237 columns, 1686 nonzeros
Variable types: 223 continuous, 14 integer (14 binary)

Root relaxation: objective 5.737611e+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 5737.61109    0    3          - 5737.61109     -      -    0s
     0     0 5740.63327    0    4          - 5740.63327     -      -    0s
     0     0 5752.26708    0    3          - 5752.26708     -      -    0s
     0     0 5753.91296    0    1          - 5753.91296     -      -    0s
H    0     0                    5753.9349587 5753.91296  0.00%     -    0s

Cutting planes:
  Flow cover: 1

Explored 0 nodes (40 simplex iterations) in 0.02 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.753934958686e+03, best bound 5.753912961797e+03, gap 0.0004%