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

Optimize a model with 342 rows, 118 columns and 684 nonzeros
Presolve removed 67 rows and 3 columns
Presolve time: 0.00s
Presolved: 275 rows, 115 columns, 584 nonzeros
Variable types: 0 continuous, 115 integer (115 binary)
Found heuristic solution: objective 43.0000000

Root relaxation: objective 5.100000e+01, 171 iterations, 0.00 seconds

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

     0     0   51.00000    0   94   43.00000   51.00000  18.6%     -    0s
     0     0   50.40909    0  112   43.00000   50.40909  17.2%     -    0s
H    0     0                      46.0000000   50.40909  9.58%     -    0s
     0     0   49.69767    0  114   46.00000   49.69767  8.04%     -    0s
     0     0   49.25000    0  115   46.00000   49.25000  7.07%     -    0s
H    0     0                      47.0000000   49.25000  4.79%     -    0s
     0     0   49.00000    0  113   47.00000   49.00000  4.26%     -    0s
     0     0   48.73402    0  113   47.00000   48.73402  3.69%     -    0s
H    0     0                      48.0000000   48.73402  1.53%     -    0s

Cutting planes:
  Zero half: 25

Explored 0 nodes (604 simplex iterations) in 0.03 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%