Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:14 2012

Optimize a model with 448 rows, 42 columns and 896 nonzeros
Presolve removed 309 rows and 0 columns
Presolve time: 0.01s
Presolved: 139 rows, 42 columns, 759 nonzeros
Variable types: 0 continuous, 42 integer (42 binary)
Found heuristic solution: objective 5.0000000

Root relaxation: objective 7.885870e+00, 76 iterations, 0.00 seconds

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

     0     0    7.88587    0   35    5.00000    7.88587  57.7%     -    0s
H    0     0                       6.0000000    7.88587  31.4%     -    0s
     0     0    7.56953    0   34    6.00000    7.56953  26.2%     -    0s
     0     0    7.50936    0   36    6.00000    7.50936  25.2%     -    0s
     0     0    7.48518    0   36    6.00000    7.48518  24.8%     -    0s
     0     0    7.48020    0   37    6.00000    7.48020  24.7%     -    0s
     0     0    7.46203    0   37    6.00000    7.46203  24.4%     -    0s
     0     0    7.46142    0   36    6.00000    7.46142  24.4%     -    0s
     0     0    7.45172    0   37    6.00000    7.45172  24.2%     -    0s
     0     0    7.44955    0   36    6.00000    7.44955  24.2%     -    0s
     0     0    7.44952    0   36    6.00000    7.44952  24.2%     -    0s
     0     2    7.44924    0   36    6.00000    7.44924  24.2%     -    0s

Cutting planes:
  Gomory: 1
  Clique: 8
  Zero half: 12

Explored 11 nodes (386 simplex iterations) in 0.05 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%