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

Optimize a model with 104 rows, 41 columns and 208 nonzeros
Presolve removed 24 rows and 0 columns
Presolve time: 0.00s
Presolved: 80 rows, 41 columns, 177 nonzeros
Variable types: 0 continuous, 41 integer (41 binary)
Found heuristic solution: objective 15.0000000

Root relaxation: objective 1.850000e+01, 53 iterations, 0.00 seconds

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

     0     0   18.50000    0   29   15.00000   18.50000  23.3%     -    0s
H    0     0                      17.0000000   18.50000  8.82%     -    0s
     0     0     cutoff    0        17.00000   17.99998  5.88%     -    0s

Cutting planes:
  Gomory: 1
  Zero half: 13

Explored 0 nodes (66 simplex iterations) in 0.01 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.700000000000e+01, best bound 1.700000000000e+01, gap 0.0%