Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:48:39 2012

Optimize a model with 123 rows, 52 columns and 246 nonzeros
Presolve removed 37 rows and 5 columns
Presolve time: 0.00s
Presolved: 86 rows, 47 columns, 183 nonzeros
Variable types: 0 continuous, 47 integer (47 binary)
Found heuristic solution: objective 20.0000000

Root relaxation: objective 2.266667e+01, 51 iterations, 0.00 seconds

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

     0     0   22.66667    0   41   20.00000   22.66667  13.3%     -    0s
H    0     0                      22.0000000   22.66667  3.03%     -    0s

Explored 0 nodes (70 simplex iterations) in 0.00 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.200000000000e+01, best bound 2.200000000000e+01, gap 0.0%