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

Optimize a model with 429 rows, 131 columns and 858 nonzeros
Presolve removed 68 rows and 0 columns
Presolve time: 0.00s
Presolved: 361 rows, 131 columns, 763 nonzeros
Variable types: 0 continuous, 131 integer (131 binary)
Found heuristic solution: objective 46.0000000

Root relaxation: objective 5.550000e+01, 205 iterations, 0.00 seconds

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

     0     0   55.50000    0  107   46.00000   55.50000  20.7%     -    0s
     0     0   54.60714    0  125   46.00000   54.60714  18.7%     -    0s
     0     0   53.55556    0  124   46.00000   53.55556  16.4%     -    0s
     0     0   53.25000    0  129   46.00000   53.25000  15.8%     -    0s
     0     0   53.03153    0  128   46.00000   53.03153  15.3%     -    0s
     0     0   52.71715    0  129   46.00000   52.71715  14.6%     -    0s
     0     0   52.62426    0  127   46.00000   52.62426  14.4%     -    0s
     0     0   52.47024    0  130   46.00000   52.47024  14.1%     -    0s
     0     0   52.35355    0  127   46.00000   52.35355  13.8%     -    0s
     0     0   52.34505    0  127   46.00000   52.34505  13.8%     -    0s
     0     0   52.34505    0  125   46.00000   52.34505  13.8%     -    0s
H    0     0                      47.0000000   52.34505  11.4%     -    0s
     0     2   52.33793    0  124   47.00000   52.33793  11.4%     -    0s
*   35    22              12      48.0000000   52.17620  8.70%  32.2    0s
*   45    19               6      49.0000000   51.95000  6.02%  30.4    0s

Cutting planes:
  Gomory: 3
  Zero half: 81

Explored 107 nodes (3668 simplex iterations) in 0.17 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.900000000000e+01, best bound 4.900000000000e+01, gap 0.0%