Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:11 2012

Optimize a model with 254 rows, 32 columns and 508 nonzeros
Presolve removed 178 rows and 0 columns
Presolve time: 0.00s
Presolved: 76 rows, 32 columns, 379 nonzeros
Variable types: 0 continuous, 32 integer (32 binary)
Found heuristic solution: objective 4.0000000

Root relaxation: objective 7.111111e+00, 53 iterations, 0.00 seconds

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

     0     0    7.11111    0   23    4.00000    7.11111  77.8%     -    0s
H    0     0                       6.0000000    7.11111  18.5%     -    0s
     0     0     cutoff    0         6.00000    6.99999  16.7%     -    0s

Cutting planes:
  Clique: 4
  Zero half: 5

Explored 0 nodes (75 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%