Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:25 2012

Optimize a model with 369 rows, 121 columns and 738 nonzeros
Presolve removed 54 rows and 0 columns
Presolve time: 0.00s
Presolved: 315 rows, 121 columns, 670 nonzeros
Variable types: 0 continuous, 121 integer (121 binary)
Found heuristic solution: objective 43.0000000

Root relaxation: objective 5.400000e+01, 185 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  102   43.00000   54.00000  25.6%     -    0s
     0     0   52.00000    0   96   43.00000   52.00000  20.9%     -    0s
H    0     0                      44.0000000   52.00000  18.2%     -    0s
     0     0   51.60714    0  119   44.00000   51.60714  17.3%     -    0s
H    0     0                      47.0000000   51.60714  9.80%     -    0s
     0     0   51.07547    0  117   47.00000   51.07547  8.67%     -    0s
     0     0   50.82711    0  119   47.00000   50.82711  8.14%     -    0s
     0     0   50.36166    0  121   47.00000   50.36166  7.15%     -    0s
     0     0   50.19375    0  120   47.00000   50.19375  6.80%     -    0s
     0     0   50.11628    0  118   47.00000   50.11628  6.63%     -    0s
     0     0   50.06087    0  119   47.00000   50.06087  6.51%     -    0s
     0     0   50.04281    0  119   47.00000   50.04281  6.47%     -    0s
     0     0   50.04281    0  119   47.00000   50.04281  6.47%     -    0s
     0     2   50.03829    0  119   47.00000   50.03829  6.46%     -    0s
*   16     2               4      48.0000000   49.81200  3.77%  29.0    0s

Cutting planes:
  Gomory: 1
  Zero half: 62

Explored 29 nodes (1476 simplex iterations) in 0.08 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%