Gurobi 5.0.1 (linux64) logging started Fri Jan 18 05:26:24 2013

Optimize a model with 2028 rows, 2044 columns and 8082 nonzeros
Presolve removed 1988 rows and 1994 columns
Presolve time: 0.07s
Presolved: 40 rows, 50 columns, 154 nonzeros
Variable types: 32 continuous, 18 integer (18 binary)

Root relaxation: objective 5.497312e+03, 22 iterations, 0.00 seconds

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

     0     0 5497.31217    0    1          - 5497.31217     -      -    0s
H    0     0                    5503.9233314 5497.31217  0.12%     -    0s
     0     0     cutoff    0      5503.92333 5503.92333   0.0%     -    0s

Cutting planes:
  Implied bound: 1
  Flow cover: 2

Explored 0 nodes (30 simplex iterations) in 0.07 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.503923331361e+03, best bound 5.503923331361e+03, gap 0.0%