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

Optimize a model with 105 rows, 44 columns and 210 nonzeros
Presolve removed 34 rows and 5 columns
Presolve time: 0.00s
Presolved: 71 rows, 39 columns, 154 nonzeros
Variable types: 0 continuous, 39 integer (39 binary)
Found heuristic solution: objective 18.0000000

Root relaxation: objective 1.950000e+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   19.50000    0   33   18.00000   19.50000  8.33%     -    0s
H    0     0                      19.0000000   19.50000  2.63%     -    0s

Explored 0 nodes (57 simplex iterations) in 0.00 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.900000000000e+01, best bound 1.900000000000e+01, gap 0.0%