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

Optimize a model with 509 rows, 46 columns and 1018 nonzeros
Presolve removed 353 rows and 0 columns
Presolve time: 0.01s
Presolved: 156 rows, 46 columns, 857 nonzeros
Variable types: 0 continuous, 46 integer (46 binary)
Found heuristic solution: objective 7.0000000

Root relaxation: objective 8.754717e+00, 86 iterations, 0.00 seconds

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

     0     0    8.75472    0   37    7.00000    8.75472  25.1%     -    0s
     0     0    8.40870    0   41    7.00000    8.40870  20.1%     -    0s
     0     0    8.30789    0   42    7.00000    8.30789  18.7%     -    0s
     0     0    8.27309    0   41    7.00000    8.27309  18.2%     -    0s
     0     0    8.26744    0   41    7.00000    8.26744  18.1%     -    0s
     0     0    8.25806    0   40    7.00000    8.25806  18.0%     -    0s
     0     0    8.25157    0   41    7.00000    8.25157  17.9%     -    0s
     0     0    8.24332    0   41    7.00000    8.24332  17.8%     -    0s
     0     0    8.23885    0   41    7.00000    8.23885  17.7%     -    0s
     0     2    8.23693    0   41    7.00000    8.23693  17.7%     -    0s

Cutting planes:
  Clique: 15
  Zero half: 7

Explored 7 nodes (357 simplex iterations) in 0.06 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 7.000000000000e+00, best bound 7.000000000000e+00, gap 0.0%