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

Optimize a model with 430 rows, 41 columns and 860 nonzeros
Presolve removed 299 rows and 0 columns
Presolve time: 0.00s
Presolved: 131 rows, 41 columns, 705 nonzeros
Variable types: 0 continuous, 41 integer (41 binary)
Found heuristic solution: objective 5.0000000

Root relaxation: objective 7.723913e+00, 94 iterations, 0.00 seconds

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

     0     0    7.72391    0   35    5.00000    7.72391  54.5%     -    0s
H    0     0                       6.0000000    7.72391  28.7%     -    0s
     0     0    7.47393    0   36    6.00000    7.47393  24.6%     -    0s
     0     0    7.41391    0   35    6.00000    7.41391  23.6%     -    0s
     0     0    7.39050    0   39    6.00000    7.39050  23.2%     -    0s
     0     0    7.37578    0   38    6.00000    7.37578  22.9%     -    0s
     0     0    7.30272    0   35    6.00000    7.30272  21.7%     -    0s
     0     0    7.28191    0   38    6.00000    7.28191  21.4%     -    0s
     0     0    7.27683    0   37    6.00000    7.27683  21.3%     -    0s
     0     0    7.27676    0   37    6.00000    7.27676  21.3%     -    0s
     0     0    7.27676    0   37    6.00000    7.27676  21.3%     -    0s
     0     2    7.27575    0   37    6.00000    7.27575  21.3%     -    0s

Cutting planes:
  Gomory: 2
  Clique: 10
  Zero half: 7
  Mod-K: 1

Explored 7 nodes (455 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%