Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:11 2012

Optimize a model with 258 rows, 104 columns and 516 nonzeros
Presolve removed 53 rows and 10 columns
Presolve time: 0.00s
Presolved: 205 rows, 94 columns, 422 nonzeros
Variable types: 0 continuous, 94 integer (94 binary)
Found heuristic solution: objective 42.0000000

Root relaxation: objective 4.850000e+01, 121 iterations, 0.00 seconds

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

     0     0   48.50000    0   84   42.00000   48.50000  15.5%     -    0s
H    0     0                      43.0000000   48.50000  12.8%     -    0s
H    0     0                      44.0000000   48.50000  10.2%     -    0s
     0     0   47.39130    0   88   44.00000   47.39130  7.71%     -    0s
H    0     0                      46.0000000   47.39130  3.02%     -    0s
H    0     0                      47.0000000   47.39130  0.83%     -    0s

Cutting planes:
  Gomory: 2
  Zero half: 8

Explored 0 nodes (256 simplex iterations) in 0.01 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.700000000000e+01, best bound 4.700000000000e+01, gap 0.0%