Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:40 2012

Optimize a model with 425 rows, 130 columns and 850 nonzeros
Presolve removed 60 rows and 0 columns
Presolve time: 0.00s
Presolved: 365 rows, 130 columns, 766 nonzeros
Variable types: 0 continuous, 130 integer (130 binary)
Found heuristic solution: objective 44.0000000

Root relaxation: objective 5.600000e+01, 188 iterations, 0.00 seconds

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

     0     0   56.00000    0  100   44.00000   56.00000  27.3%     -    0s
     0     0   55.12500    0  109   44.00000   55.12500  25.3%     -    0s
     0     0   54.77778    0  125   44.00000   54.77778  24.5%     -    0s
H    0     0                      46.0000000   54.77778  19.1%     -    0s
     0     0   54.27273    0  127   46.00000   54.27273  18.0%     -    0s
     0     0   53.50000    0  128   46.00000   53.50000  16.3%     -    0s
     0     0   53.12708    0  129   46.00000   53.12708  15.5%     -    0s
     0     0   52.76642    0  128   46.00000   52.76642  14.7%     -    0s
     0     0   52.51056    0  129   46.00000   52.51056  14.2%     -    0s
     0     0   52.38269    0  130   46.00000   52.38269  13.9%     -    0s
     0     0   52.36998    0  130   46.00000   52.36998  13.8%     -    0s
     0     0   52.36998    0  129   46.00000   52.36998  13.8%     -    0s
     0     2   52.36171    0  129   46.00000   52.36171  13.8%     -    0s
*   12    10               8      47.0000000   52.36171  11.4%  38.2    0s
*   52    17               8      48.0000000   51.85714  8.04%  36.2    0s

Cutting planes:
  Zero half: 123

Explored 291 nodes (8192 simplex iterations) in 0.32 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%