Gurobi 5.0.1 (linux64) logging started Fri Jan 18 05:26:27 2013

Optimize a model with 1028 rows, 3044 columns and 8082 nonzeros
Presolve removed 996 rows and 2950 columns
Presolve time: 0.11s
Presolved: 32 rows, 94 columns, 188 nonzeros
Variable types: 68 continuous, 26 integer (26 binary)

Root relaxation: objective 5.497312e+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 5497.31217    0    1          - 5497.31217     -      -    0s
     0     0 5503.90811    0    2          - 5503.90811     -      -    0s
     0     0 5503.90814    0    2          - 5503.90814     -      -    0s
     0     0 5503.91151    0    2          - 5503.91151     -      -    0s
     0     0 5503.91490    0    2          - 5503.91490     -      -    0s
     0     0 5503.91828    0    2          - 5503.91828     -      -    0s
     0     0 5503.92166    0    2          - 5503.92166     -      -    0s
H    0     0                    5503.9233314 5503.92166  0.00%     -    0s

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

Explored 0 nodes (25 simplex iterations) in 0.12 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.503923331364e+03, best bound 5.503921659426e+03, gap 0.0000%