Gurobi 5.0.1 (linux64) logging started Sat Dec  8 02:35:12 2012

Optimize a model with 285 rows, 270 columns and 892 nonzeros
Presolve removed 22 rows and 14 columns
Presolve time: 0.00s
Presolved: 263 rows, 256 columns, 836 nonzeros
Variable types: 172 continuous, 84 integer (84 binary)

Root relaxation: objective 2.661363e+04, 121 iterations, 0.00 seconds

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

     0     0 26613.6343    0   38          - 26613.6343     -      -    0s
H    0     0                    40198.000000 26613.6343  33.8%     -    0s
     0     0 30681.6033    0   10 40198.0000 30681.6033  23.7%     -    0s
H    0     0                    30860.000000 30681.6033  0.58%     -    0s
     0     0     cutoff    0      30860.0000 30860.0000   0.0%     -    0s

Cutting planes:
  Gomory: 5
  Cover: 3
  Flow cover: 22
  Flow path: 14

Explored 0 nodes (163 simplex iterations) in 0.01 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.086000000000e+04, best bound 3.086000000000e+04, gap 0.0%