Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:06 2012

Optimize a model with 194 rows, 91 columns and 388 nonzeros
Presolve removed 72 rows and 25 columns
Presolve time: 0.00s
Presolved: 122 rows, 66 columns, 248 nonzeros
Variable types: 0 continuous, 66 integer (66 binary)
Found heuristic solution: objective 38.0000000

Root relaxation: objective 4.250000e+01, 70 iterations, 0.00 seconds

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

     0     0   42.50000    0   59   38.00000   42.50000  11.8%     -    0s
H    0     0                      40.0000000   42.50000  6.25%     -    0s
     0     0   41.00000    0   56   40.00000   41.00000  2.50%     -    0s
     0     0   41.00000    0   54   40.00000   41.00000  2.50%     -    0s
     0     0     cutoff    0        40.00000   40.99996  2.50%     -    0s

Cutting planes:
  Gomory: 1
  Zero half: 12

Explored 0 nodes (162 simplex iterations) in 0.01 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.000000000000e+01, best bound 4.000000000000e+01, gap 0.0%