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

Optimize a model with 121 rows, 68 columns and 242 nonzeros
Presolve removed 36 rows and 17 columns
Presolve time: 0.00s
Presolved: 85 rows, 51 columns, 173 nonzeros
Variable types: 0 continuous, 51 integer (51 binary)
Found heuristic solution: objective 30.0000000

Root relaxation: objective 3.450000e+01, 58 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   47   30.00000   34.50000  15.0%     -    0s
H    0     0                      31.0000000   34.50000  11.3%     -    0s
     0     0   33.50000    0   49   31.00000   33.50000  8.06%     -    0s
H    0     0                      32.0000000   33.50000  4.69%     -    0s
*    0     0               0      33.0000000   33.00000   0.0%     -    0s

Cutting planes:
  Gomory: 1
  Zero half: 27

Explored 0 nodes (102 simplex iterations) in 0.00 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%