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

Optimize a model with 93 rows, 39 columns and 186 nonzeros
Presolve removed 21 rows and 0 columns
Presolve time: 0.00s
Presolved: 72 rows, 39 columns, 156 nonzeros
Variable types: 0 continuous, 39 integer (39 binary)
Found heuristic solution: objective 14.0000000

Root relaxation: objective 1.680000e+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   16.80000    0   34   14.00000   16.80000  20.0%     -    0s
     0     0   16.00000    0   32   14.00000   16.00000  14.3%     -    0s
H    0     0                      15.0000000   16.00000  6.67%     -    0s
H    0     0                      16.0000000   16.00000   0.0%     -    0s

Cutting planes:
  Gomory: 1
  Zero half: 3

Explored 0 nodes (64 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%