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

Optimize a model with 198 rows, 83 columns and 396 nonzeros
Presolve removed 47 rows and 9 columns
Presolve time: 0.00s
Presolved: 151 rows, 74 columns, 312 nonzeros
Variable types: 0 continuous, 74 integer (74 binary)
Found heuristic solution: objective 31.0000000

Root relaxation: objective 3.775000e+01, 107 iterations, 0.00 seconds

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

     0     0   37.75000    0   63   31.00000   37.75000  21.8%     -    0s
H    0     0                      34.0000000   37.75000  11.0%     -    0s
     0     0   36.83333    0   68   34.00000   36.83333  8.33%     -    0s
H    0     0                      35.0000000   36.83333  5.24%     -    0s
H    0     0                      36.0000000   36.83333  2.31%     -    0s

Cutting planes:
  Gomory: 1
  Zero half: 4

Explored 0 nodes (159 simplex iterations) in 0.01 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.600000000000e+01, best bound 3.600000000000e+01, gap 0.0%