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

Optimize a model with 230 rows, 91 columns and 460 nonzeros
Presolve removed 64 rows and 9 columns
Presolve time: 0.00s
Presolved: 166 rows, 82 columns, 350 nonzeros
Variable types: 0 continuous, 82 integer (82 binary)
Found heuristic solution: objective 34.0000000

Root relaxation: objective 4.100000e+01, 113 iterations, 0.00 seconds

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

     0     0   41.00000    0   74   34.00000   41.00000  20.6%     -    0s
H    0     0                      37.0000000   41.00000  10.8%     -    0s
     0     0   40.33333    0   77   37.00000   40.33333  9.01%     -    0s
     0     0   40.00000    0   73   37.00000   40.00000  8.11%     -    0s
     0     0   39.50000    0   77   37.00000   39.50000  6.76%     -    0s
     0     0   39.25000    0   80   37.00000   39.25000  6.08%     -    0s
     0     0   39.25000    0   68   37.00000   39.25000  6.08%     -    0s
     0     0   39.25000    0   74   37.00000   39.25000  6.08%     -    0s
     0     0   39.25000    0   71   37.00000   39.25000  6.08%     -    0s
H    0     0                      38.0000000   39.25000  3.29%     -    0s
     0     2   39.25000    0   67   38.00000   39.25000  3.29%     -    0s

Cutting planes:
  Gomory: 1
  Zero half: 14

Explored 3 nodes (404 simplex iterations) in 0.03 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.800000000000e+01, best bound 3.800000000000e+01, gap 0.0%