Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:15 2012

Optimize a model with 494 rows, 46 columns and 988 nonzeros
Presolve removed 336 rows and 0 columns
Presolve time: 0.01s
Presolved: 158 rows, 46 columns, 815 nonzeros
Variable types: 0 continuous, 46 integer (46 binary)
Found heuristic solution: objective 7.0000000

Root relaxation: objective 9.017241e+00, 112 iterations, 0.00 seconds

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

     0     0    9.01724    0   39    7.00000    9.01724  28.8%     -    0s
     0     0    8.70386    0   40    7.00000    8.70386  24.3%     -    0s
     0     0    8.68595    0   39    7.00000    8.68595  24.1%     -    0s
     0     0    8.66884    0   40    7.00000    8.66884  23.8%     -    0s
H    0     0                       8.0000000    8.66884  8.36%     -    0s

Cutting planes:
  Gomory: 1
  Clique: 7
  Zero half: 9

Explored 0 nodes (192 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%