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 1878 rows and 1878 columns
Presolve time: 0.07s
Presolved: 150 rows, 166 columns, 476 nonzeros
Variable types: 94 continuous, 72 integer (72 binary)

Root relaxation: objective 5.784077e+03, 77 iterations, 0.00 seconds

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

     0     0 5784.07688    0    1          - 5784.07688     -      -    0s
H    0     0                    5812.3255371 5784.07688  0.49%     -    0s
     0     0 5806.17903    0    4 5812.32554 5806.17903  0.11%     -    0s
     0     0     cutoff    0      5812.32554 5812.32554   0.0%     -    0s

Cutting planes:
  Implied bound: 2
  Flow cover: 4

Explored 0 nodes (124 simplex iterations) in 0.08 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.812325537148e+03, best bound 5.812325537148e+03, gap 0.0%