Gurobi 5.0.1 (linux64) logging started Sat Nov 17 19:52:05 2012

Optimize a model with 19 rows, 16 columns and 61 nonzeros
Presolve time: 0.00s
Presolved: 19 rows, 16 columns, 61 nonzeros
Variable types: 0 continuous, 16 integer (16 binary)
Found heuristic solution: objective 6.0000000

Root relaxation: objective 0.000000e+00, 8 iterations, 0.00 seconds

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

     0     0    0.00000    0    7    6.00000    0.00000   100%     -    0s
     0     0    0.62500    0   11    6.00000    0.62500  89.6%     -    0s
H    0     0                       2.0000000    0.62500  68.8%     -    0s
     0     0     cutoff    0         2.00000    1.00000  50.0%     -    0s

Cutting planes:
  Gomory: 1
  Zero half: 2

Explored 0 nodes (30 simplex iterations) in 0.00 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.000000000000e+00, best bound 2.000000000000e+00, gap 0.0%