Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:18 2012

Optimize a model with 330 rows, 115 columns and 660 nonzeros
Presolve removed 78 rows and 6 columns
Presolve time: 0.00s
Presolved: 252 rows, 109 columns, 530 nonzeros
Variable types: 0 continuous, 109 integer (109 binary)
Found heuristic solution: objective 41.0000000

Root relaxation: objective 5.050000e+01, 145 iterations, 0.00 seconds

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

     0     0   50.50000    0   91   41.00000   50.50000  23.2%     -    0s
     0     0   49.27778    0   97   41.00000   49.27778  20.2%     -    0s
H    0     0                      46.0000000   49.27778  7.13%     -    0s
     0     0   49.00000    0  101   46.00000   49.00000  6.52%     -    0s
     0     0   48.67315    0  105   46.00000   48.67315  5.81%     -    0s
     0     0   48.21250    0  105   46.00000   48.21250  4.81%     -    0s
     0     0   48.00000    0  104   46.00000   48.00000  4.35%     -    0s
     0     0   47.78621    0  105   46.00000   47.78621  3.88%     -    0s
     0     0   47.75000    0  103   46.00000   47.75000  3.80%     -    0s
     0     0   47.73988    0  107   46.00000   47.73988  3.78%     -    0s
     0     0   47.73988    0  107   46.00000   47.73988  3.78%     -    0s
     0     2   47.73988    0  107   46.00000   47.73988  3.78%     -    0s

Cutting planes:
  Gomory: 1
  Zero half: 65

Explored 41 nodes (1349 simplex iterations) in 0.07 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.600000000000e+01, best bound 4.600000000000e+01, gap 0.0%