Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:48:38 2012

Optimize a model with 128 rows, 45 columns and 256 nonzeros
Presolve removed 61 rows and 9 columns
Presolve time: 0.00s
Presolved: 67 rows, 36 columns, 156 nonzeros
Variable types: 0 continuous, 36 integer (36 binary)
Found heuristic solution: objective 19.0000000

Root relaxation: cutoff, 35 iterations, 0.00 seconds

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

     0     0     cutoff    0        19.00000   19.99998  5.26%     -    0s

Explored 0 nodes (35 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%