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

Optimize a model with 91 rows, 38 columns and 182 nonzeros
Presolve removed 29 rows and 4 columns
Presolve time: 0.00s
Presolved: 62 rows, 34 columns, 136 nonzeros
Variable types: 0 continuous, 34 integer (34 binary)
Found heuristic solution: objective 15.0000000

Root relaxation: objective 1.750000e+01, 45 iterations, 0.00 seconds

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

     0     0   17.50000    0   31   15.00000   17.50000  16.7%     -    0s
     0     0   17.00000    0   24   15.00000   17.00000  13.3%     -    0s
H    0     0                      16.0000000   17.00000  6.25%     -    0s

Cutting planes:
  Gomory: 1
  Zero half: 6

Explored 0 nodes (67 simplex iterations) in 0.01 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.600000000000e+01, best bound 1.600000000000e+01, gap 0.0%