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

Optimize a model with 1028 rows, 3044 columns and 8082 nonzeros
Presolve removed 970 rows and 2869 columns
Presolve time: 0.10s
Presolved: 58 rows, 175 columns, 350 nonzeros
Variable types: 123 continuous, 52 integer (52 binary)

Root relaxation: objective 5.281733e+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 5281.73269    0    1          - 5281.73269     -      -    0s
     0     0 5296.28012    0    2          - 5296.28012     -      -    0s
     0     0 5296.28018    0    2          - 5296.28018     -      -    0s
     0     0 5296.28787    0    2          - 5296.28787     -      -    0s
     0     0 5296.29561    0    2          - 5296.29561     -      -    0s
     0     0 5296.30333    0    2          - 5296.30333     -      -    0s
     0     0 5296.31103    0    2          - 5296.31103     -      -    0s
H    0     0                    5296.3129667 5296.31103  0.00%     -    0s

Cutting planes:
  Cover: 1
  Implied bound: 1
  Flow cover: 1

Explored 0 nodes (38 simplex iterations) in 0.11 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.296312966655e+03, best bound 5.296311029411e+03, gap 0.0000%