Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:12 2012

Optimize a model with 255 rows, 32 columns and 510 nonzeros
Presolve removed 181 rows and 0 columns
Presolve time: 0.00s
Presolved: 74 rows, 32 columns, 376 nonzeros
Variable types: 0 continuous, 32 integer (32 binary)
Found heuristic solution: objective 4.0000000

Root relaxation: objective 6.733333e+00, 47 iterations, 0.00 seconds

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

     0     0    6.73333    0   26    4.00000    6.73333  68.3%     -    0s
H    0     0                       5.0000000    6.73333  34.7%     -    0s
     0     0    6.48148    0   26    5.00000    6.48148  29.6%     -    0s
H    0     0                       6.0000000    6.48148  8.02%     -    0s

Cutting planes:
  Gomory: 2
  Clique: 3
  Zero half: 3

Explored 0 nodes (73 simplex iterations) in 0.01 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 6.000000000000e+00, best bound 6.000000000000e+00, gap 0.0%