Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:04 2012

Optimize a model with 167 rows, 83 columns and 334 nonzeros
Presolve removed 33 rows and 10 columns
Presolve time: 0.00s
Presolved: 134 rows, 73 columns, 274 nonzeros
Variable types: 0 continuous, 73 integer (73 binary)
Found heuristic solution: objective 36.0000000

Root relaxation: objective 4.050000e+01, 94 iterations, 0.00 seconds

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

     0     0   40.50000    0   62   36.00000   40.50000  12.5%     -    0s
H    0     0                      37.0000000   40.50000  9.46%     -    0s
     0     0   39.50000    0   71   37.00000   39.50000  6.76%     -    0s
H    0     0                      38.0000000   39.50000  3.95%     -    0s
     0     0     cutoff    0        38.00000   38.99996  2.63%     -    0s

Cutting planes:
  Gomory: 2
  Zero half: 18

Explored 0 nodes (200 simplex iterations) in 0.01 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%