Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:05 2012

Optimize a model with 216 rows, 88 columns and 432 nonzeros
Presolve removed 67 rows and 14 columns
Presolve time: 0.00s
Presolved: 149 rows, 74 columns, 311 nonzeros
Variable types: 0 continuous, 74 integer (74 binary)
Found heuristic solution: objective 36.0000000

Root relaxation: objective 4.080000e+01, 104 iterations, 0.00 seconds

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

     0     0   40.80000    0   65   36.00000   40.80000  13.3%     -    0s
H    0     0                      39.0000000   40.80000  4.62%     -    0s
     0     0     cutoff    0        39.00000   39.99996  2.56%     -    0s

Cutting planes:
  Gomory: 1
  Zero half: 33

Explored 0 nodes (146 simplex iterations) in 0.01 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.900000000000e+01, best bound 3.900000000000e+01, gap 0.0%