Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:14 2012

Optimize a model with 287 rows, 109 columns and 574 nonzeros
Presolve removed 64 rows and 14 columns
Presolve time: 0.00s
Presolved: 223 rows, 95 columns, 456 nonzeros
Variable types: 0 continuous, 95 integer (95 binary)
Found heuristic solution: objective 44.0000000

Root relaxation: objective 5.050000e+01, 122 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   81   44.00000   50.50000  14.8%     -    0s
     0     0   49.00000    0   93   44.00000   49.00000  11.4%     -    0s
     0     0   48.43333    0   95   44.00000   48.43333  10.1%     -    0s
H    0     0                      45.0000000   48.43333  7.63%     -    0s
     0     0   48.16667    0   93   45.00000   48.16667  7.04%     -    0s
H    0     0                      46.0000000   48.16667  4.71%     -    0s
     0     0   47.89143    0   95   46.00000   47.89143  4.11%     -    0s
     0     0   47.53927    0   94   46.00000   47.53927  3.35%     -    0s
     0     0   47.48565    0   94   46.00000   47.48565  3.23%     -    0s
     0     0   47.41667    0   95   46.00000   47.41667  3.08%     -    0s
     0     0   47.40487    0   94   46.00000   47.40487  3.05%     -    0s
     0     0   47.39667    0   94   46.00000   47.39667  3.04%     -    0s
     0     0   47.39667    0   94   46.00000   47.39667  3.04%     -    0s
     0     2   47.39667    0   94   46.00000   47.39667  3.04%     -    0s

Cutting planes:
  Gomory: 2
  Zero half: 38

Explored 7 nodes (569 simplex iterations) in 0.05 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%