Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:16 2012

Optimize a model with 345 rows, 112 columns and 690 nonzeros
Presolve removed 82 rows and 4 columns
Presolve time: 0.00s
Presolved: 263 rows, 108 columns, 566 nonzeros
Variable types: 0 continuous, 108 integer (108 binary)
Found heuristic solution: objective 39.0000000

Root relaxation: objective 4.900000e+01, 136 iterations, 0.00 seconds

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

     0     0   49.00000    0   84   39.00000   49.00000  25.6%     -    0s
     0     0   47.50000    0   91   39.00000   47.50000  21.8%     -    0s
H    0     0                      41.0000000   47.50000  15.9%     -    0s
     0     0   47.18519    0  105   41.00000   47.18519  15.1%     -    0s
     0     0   46.43243    0  103   41.00000   46.43243  13.2%     -    0s
     0     0   46.04128    0  100   41.00000   46.04128  12.3%     -    0s
     0     0   45.90909    0   99   41.00000   45.90909  12.0%     -    0s
     0     0   45.75329    0  106   41.00000   45.75329  11.6%     -    0s
     0     0   45.54301    0  104   41.00000   45.54301  11.1%     -    0s
     0     0   45.39674    0  104   41.00000   45.39674  10.7%     -    0s
     0     0   45.37773    0  104   41.00000   45.37773  10.7%     -    0s
     0     0   45.37773    0  101   41.00000   45.37773  10.7%     -    0s
     0     2   45.36095    0  101   41.00000   45.36095  10.6%     -    0s
H    4     4                      42.0000000   45.25000  7.74%  23.0    0s
H   34     8                      43.0000000   44.52874  3.56%  20.6    0s

Cutting planes:
  Gomory: 2
  Zero half: 64

Explored 46 nodes (1569 simplex iterations) in 0.08 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.300000000000e+01, best bound 4.300000000000e+01, gap 0.0%