Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:22 2012

Optimize a model with 330 rows, 119 columns and 660 nonzeros
Presolve removed 69 rows and 7 columns
Presolve time: 0.00s
Presolved: 261 rows, 112 columns, 541 nonzeros
Variable types: 0 continuous, 112 integer (112 binary)
Found heuristic solution: objective 47.0000000

Root relaxation: objective 5.400000e+01, 160 iterations, 0.00 seconds

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

     0     0   54.00000    0   92   47.00000   54.00000  14.9%     -    0s
     0     0   53.00000    0   94   47.00000   53.00000  12.8%     -    0s
H    0     0                      48.0000000   53.00000  10.4%     -    0s
     0     0   52.00000    0  103   48.00000   52.00000  8.33%     -    0s
H    0     0                      49.0000000   52.00000  6.12%     -    0s
     0     0   51.44444    0  105   49.00000   51.44444  4.99%     -    0s
     0     0   51.31829    0  105   49.00000   51.31829  4.73%     -    0s
     0     0   51.03030    0  107   49.00000   51.03030  4.14%     -    0s
     0     0   50.75000    0  105   49.00000   50.75000  3.57%     -    0s
     0     0   50.75000    0  106   49.00000   50.75000  3.57%     -    0s
     0     0   50.75000    0   95   49.00000   50.75000  3.57%     -    0s
     0     2   50.75000    0   95   49.00000   50.75000  3.57%     -    0s
*   23     2               5      50.0000000   50.62162  1.24%  13.0    0s

Cutting planes:
  Gomory: 1
  Zero half: 36

Explored 24 nodes (1042 simplex iterations) in 0.06 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.000000000000e+01, best bound 5.000000000000e+01, gap 0.0%