Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:42 2012

Optimize a model with 467 rows, 131 columns and 934 nonzeros
Presolve removed 105 rows and 4 columns
Presolve time: 0.00s
Presolved: 362 rows, 127 columns, 777 nonzeros
Variable types: 0 continuous, 127 integer (127 binary)
Found heuristic solution: objective 39.0000000

Root relaxation: objective 5.425000e+01, 239 iterations, 0.00 seconds

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

     0     0   54.25000    0  111   39.00000   54.25000  39.1%     -    0s
H    0     0                      43.0000000   54.25000  26.2%     -    0s
     0     0   53.16667    0  116   43.00000   53.16667  23.6%     -    0s
     0     0   52.80328    0  124   43.00000   52.80328  22.8%     -    0s
     0     0   52.18421    0  124   43.00000   52.18421  21.4%     -    0s
H    0     0                      45.0000000   52.18421  16.0%     -    0s
     0     0   51.79690    0  125   45.00000   51.79690  15.1%     -    0s
     0     0   51.51754    0  127   45.00000   51.51754  14.5%     -    0s
     0     0   51.32484    0  127   45.00000   51.32484  14.1%     -    0s
     0     0   51.21851    0  126   45.00000   51.21851  13.8%     -    0s
     0     0   51.12492    0  126   45.00000   51.12492  13.6%     -    0s
     0     0   51.09937    0  127   45.00000   51.09937  13.6%     -    0s
     0     0   51.09937    0  127   45.00000   51.09937  13.6%     -    0s
     0     2   51.09752    0  127   45.00000   51.09752  13.6%     -    0s
*   19    15              13      46.0000000   51.09752  11.1%  33.4    0s
H   27     9                      48.0000000   50.92857  6.10%  31.7    0s

Cutting planes:
  Zero half: 74

Explored 67 nodes (2657 simplex iterations) in 0.14 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.800000000000e+01, best bound 4.800000000000e+01, gap 0.0%