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

Optimize a model with 137 rows, 66 columns and 274 nonzeros
Presolve removed 40 rows and 11 columns
Presolve time: 0.00s
Presolved: 97 rows, 55 columns, 201 nonzeros
Variable types: 0 continuous, 55 integer (55 binary)
Found heuristic solution: objective 29.0000000

Root relaxation: objective 3.200000e+01, 59 iterations, 0.00 seconds

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

     0     0   32.00000    0   40   29.00000   32.00000  10.3%     -    0s
     0     0   31.14286    0   54   29.00000   31.14286  7.39%     -    0s
H    0     0                      30.0000000   31.14286  3.81%     -    0s
     0     0     cutoff    0        30.00000   30.99997  3.33%     -    0s

Cutting planes:
  Zero half: 40

Explored 0 nodes (124 simplex iterations) in 0.00 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.000000000000e+01, best bound 3.000000000000e+01, gap 0.0%