Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:48:37 2012

Optimize a model with 85 rows, 40 columns and 170 nonzeros
Presolve removed 23 rows and 6 columns
Presolve time: 0.00s
Presolved: 62 rows, 34 columns, 129 nonzeros
Variable types: 0 continuous, 34 integer (34 binary)
Found heuristic solution: objective 17.0000000

Root relaxation: objective 1.866667e+01, 43 iterations, 0.00 seconds

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

     0     0   18.66667    0   28   17.00000   18.66667  9.80%     -    0s
H    0     0                      18.0000000   18.66667  3.70%     -    0s

Explored 0 nodes (59 simplex iterations) in 0.00 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.800000000000e+01, best bound 1.800000000000e+01, gap 0.0%