Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:48:55 2012

Optimize a model with 381 rows, 87 columns and 762 nonzeros
Presolve removed 138 rows and 3 columns
Presolve time: 0.00s
Presolved: 243 rows, 84 columns, 579 nonzeros
Variable types: 0 continuous, 84 integer (84 binary)
Found heuristic solution: objective 24.0000000

Root relaxation: objective 3.250000e+01, 137 iterations, 0.00 seconds

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

     0     0   32.50000    0   68   24.00000   32.50000  35.4%     -    0s
H    0     0                      26.0000000   32.50000  25.0%     -    0s
     0     0   31.85000    0   81   26.00000   31.85000  22.5%     -    0s
     0     0   31.30263    0   81   26.00000   31.30263  20.4%     -    0s
     0     0   31.08943    0   81   26.00000   31.08943  19.6%     -    0s
     0     0   30.87147    0   81   26.00000   30.87147  18.7%     -    0s
H    0     0                      27.0000000   30.87147  14.3%     -    0s
     0     0   30.74587    0   81   27.00000   30.74587  13.9%     -    0s
     0     0   30.69515    0   83   27.00000   30.69515  13.7%     -    0s
     0     0   30.69052    0   80   27.00000   30.69052  13.7%     -    0s
     0     0   30.58856    0   81   27.00000   30.58856  13.3%     -    0s
     0     0   30.55903    0   84   27.00000   30.55903  13.2%     -    0s
     0     0   30.50277    0   81   27.00000   30.50277  13.0%     -    0s
     0     0   30.48661    0   83   27.00000   30.48661  12.9%     -    0s
     0     0   30.48661    0   83   27.00000   30.48661  12.9%     -    0s
     0     2   30.48489    0   83   27.00000   30.48489  12.9%     -    0s

Cutting planes:
  Gomory: 3
  Zero half: 48

Explored 94 nodes (2657 simplex iterations) in 0.11 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.700000000000e+01, best bound 2.700000000000e+01, gap 0.0%