Gurobi 5.0.1 (linux64) logging started Fri Jan 18 05:26:19 2013

Optimize a model with 32 rows, 522 columns and 5551 nonzeros
Presolve removed 12 rows and 12 columns
Presolve time: 0.01s
Presolved: 20 rows, 510 columns, 5027 nonzeros
Variable types: 501 continuous, 9 integer (9 binary)

Root relaxation: objective 3.432410e+03, 15 iterations, 0.00 seconds

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

     0     0 3432.41027    0    8          - 3432.41027     -      -    0s
     0     0 3432.55214    0    9          - 3432.55214     -      -    0s
     0     0 3432.55989    0    9          - 3432.55989     -      -    0s
     0     0 3432.56058    0    9          - 3432.56058     -      -    0s
     0     0 3432.63177    0    6          - 3432.63177     -      -    0s
H    0     0                    3432.7437730 3432.63177  0.00%     -    0s

Cutting planes:
  Cover: 2
  Implied bound: 3

Explored 0 nodes (45 simplex iterations) in 0.10 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.432743772967e+03, best bound 3.432631767357e+03, gap 0.0033%