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

Optimize a model with 111 rows, 67 columns and 222 nonzeros
Presolve removed 55 rows and 28 columns
Presolve time: 0.00s
Presolved: 56 rows, 39 columns, 116 nonzeros
Variable types: 0 continuous, 39 integer (39 binary)
Found heuristic solution: objective 31.0000000

Root relaxation: objective 3.375000e+01, 46 iterations, 0.00 seconds

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

     0     0   33.75000    0   36   31.00000   33.75000  8.87%     -    0s
H    0     0                      33.0000000   33.75000  2.27%     -    0s

Explored 0 nodes (54 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%