Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:01 2012

Optimize a model with 134 rows, 70 columns and 268 nonzeros
Presolve removed 54 rows and 22 columns
Presolve time: 0.00s
Presolved: 80 rows, 48 columns, 165 nonzeros
Variable types: 0 continuous, 48 integer (48 binary)
Found heuristic solution: objective 29.0000000

Root relaxation: objective 3.450000e+01, 55 iterations, 0.00 seconds

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

     0     0   34.50000    0   39   29.00000   34.50000  19.0%     -    0s
H    0     0                      31.0000000   34.50000  11.3%     -    0s
H    0     0                      33.0000000   34.50000  4.55%     -    0s
     0     0     cutoff    0        33.00000   33.99997  3.03%     -    0s

Cutting planes:
  Gomory: 2
  Zero half: 13

Explored 0 nodes (89 simplex iterations) in 0.01 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.300000000000e+01, best bound 3.300000000000e+01, gap 0.0%