Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:23 2012

Optimize a model with 370 rows, 120 columns and 740 nonzeros
Presolve removed 92 rows and 8 columns
Presolve time: 0.00s
Presolved: 278 rows, 112 columns, 590 nonzeros
Variable types: 0 continuous, 112 integer (112 binary)
Found heuristic solution: objective 45.0000000

Root relaxation: objective 5.300000e+01, 164 iterations, 0.00 seconds

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

     0     0   53.00000    0   82   45.00000   53.00000  17.8%     -    0s
     0     0   51.33333    0   92   45.00000   51.33333  14.1%     -    0s
H    0     0                      47.0000000   51.33333  9.22%     -    0s
     0     0   51.27778    0  111   47.00000   51.27778  9.10%     -    0s
     0     0   50.91304    0  106   47.00000   50.91304  8.33%     -    0s
     0     0   50.71892    0  105   47.00000   50.71892  7.91%     -    0s
     0     0   50.47484    0  111   47.00000   50.47484  7.39%     -    0s
     0     0   50.18182    0  105   47.00000   50.18182  6.77%     -    0s
     0     0   50.15810    0  110   47.00000   50.15810  6.72%     -    0s
     0     0   50.15810    0  109   47.00000   50.15810  6.72%     -    0s
     0     2   50.05625    0  109   47.00000   50.05625  6.50%     -    0s
*   11     4               8      48.0000000   50.05625  4.28%  12.9    0s

Cutting planes:
  Gomory: 2
  Zero half: 64

Explored 41 nodes (1341 simplex iterations) in 0.07 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%