Gurobi 5.0.1 (linux64) logging started Fri Jan 18 02:46:17 2013

Optimize a model with 228 rows, 644 columns and 1682 nonzeros
Presolve removed 211 rows and 588 columns
Presolve time: 0.01s
Presolved: 17 rows, 56 columns, 112 nonzeros
Variable types: 45 continuous, 11 integer (11 binary)

Root relaxation: objective 5.737611e+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 5737.61109    0    1          - 5737.61109     -      -    0s
H    0     0                    5753.9349587 5737.61109  0.28%     -    0s
     0     0 5753.92009    0    2 5753.93496 5753.92009  0.00%     -    0s

Cutting planes:
  Cover: 1
  Flow cover: 1

Explored 0 nodes (10 simplex iterations) in 0.01 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.753934958686e+03, best bound 5.753920093163e+03, gap 0.0003%