Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:18 2012

Optimize a model with 600 rows, 50 columns and 1200 nonzeros
Presolve removed 415 rows and 0 columns
Presolve time: 0.01s
Presolved: 185 rows, 50 columns, 1018 nonzeros
Variable types: 0 continuous, 50 integer (50 binary)
Found heuristic solution: objective 6.0000000

Root relaxation: objective 9.419118e+00, 85 iterations, 0.00 seconds

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

     0     0    9.41912    0   41    6.00000    9.41912  57.0%     -    0s
H    0     0                       7.0000000    9.41912  34.6%     -    0s
H    0     0                       8.0000000    9.41912  17.7%     -    0s
     0     0    9.13916    0   39    8.00000    9.13916  14.2%     -    0s
     0     0    9.08956    0   43    8.00000    9.08956  13.6%     -    0s
     0     0     cutoff    0         8.00000    8.99999  12.5%     -    0s

Cutting planes:
  Gomory: 3
  Clique: 17
  Zero half: 2

Explored 0 nodes (161 simplex iterations) in 0.03 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 8.000000000000e+00, best bound 8.000000000000e+00, gap 0.0%