Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:03 2012

Optimize a model with 154 rows, 80 columns and 308 nonzeros
Presolve removed 87 rows and 35 columns
Presolve time: 0.00s
Presolved: 67 rows, 45 columns, 138 nonzeros
Variable types: 0 continuous, 45 integer (45 binary)
Found heuristic solution: objective 37.0000000

Root relaxation: objective 3.900000e+01, 47 iterations, 0.00 seconds

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

     0     0   39.00000    0   36   37.00000   39.00000  5.41%     -    0s
     0     0   38.66667    0   44   37.00000   38.66667  4.50%     -    0s
H    0     0                      38.0000000   38.66667  1.75%     -    0s

Cutting planes:
  Gomory: 1
  Zero half: 3

Explored 0 nodes (99 simplex iterations) in 0.00 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%