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

Optimize a model with 79 rows, 44 columns and 158 nonzeros
Presolve removed 30 rows and 10 columns
Presolve time: 0.00s
Presolved: 49 rows, 34 columns, 107 nonzeros
Variable types: 0 continuous, 34 integer (34 binary)
Found heuristic solution: objective 19.0000000

Root relaxation: objective 2.066667e+01, 38 iterations, 0.00 seconds

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

     0     0   20.66667    0   24   19.00000   20.66667  8.77%     -    0s
H    0     0                      20.0000000   20.66667  3.33%     -    0s

Explored 0 nodes (46 simplex iterations) in 0.00 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.000000000000e+01, best bound 2.000000000000e+01, gap 0.0%