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

Optimize a model with 338 rows, 119 columns and 676 nonzeros
Presolve removed 55 rows and 4 columns
Presolve time: 0.00s
Presolved: 283 rows, 115 columns, 591 nonzeros
Variable types: 0 continuous, 115 integer (115 binary)
Found heuristic solution: objective 45.0000000

Root relaxation: objective 5.300000e+01, 158 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   92   45.00000   53.00000  17.8%     -    0s
     0     0   51.83333    0   99   45.00000   51.83333  15.2%     -    0s
     0     0   51.25000    0  107   45.00000   51.25000  13.9%     -    0s
     0     0   51.00000    0  102   45.00000   51.00000  13.3%     -    0s
     0     0   50.65650    0  115   45.00000   50.65650  12.6%     -    0s
H    0     0                      47.0000000   50.65650  7.78%     -    0s
     0     0   50.20183    0  114   47.00000   50.20183  6.81%     -    0s
     0     0   49.84767    0  114   47.00000   49.84767  6.06%     -    0s
     0     0   49.70103    0  115   47.00000   49.70103  5.75%     -    0s
     0     0   49.59944    0  114   47.00000   49.59944  5.53%     -    0s
     0     0   49.58920    0  113   47.00000   49.58920  5.51%     -    0s
     0     0   49.58881    0  114   47.00000   49.58881  5.51%     -    0s
     0     0   49.58881    0  113   47.00000   49.58881  5.51%     -    0s
     0     2   49.58675    0  113   47.00000   49.58675  5.50%     -    0s
*   13     5               5      48.0000000   49.41488  2.95%  26.8    0s

Cutting planes:
  Gomory: 2
  Zero half: 64

Explored 23 nodes (1156 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%