Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:17 2012

Optimize a model with 567 rows, 48 columns and 1134 nonzeros
Presolve removed 399 rows and 0 columns
Presolve time: 0.01s
Presolved: 168 rows, 48 columns, 933 nonzeros
Variable types: 0 continuous, 48 integer (48 binary)
Found heuristic solution: objective 7.0000000

Root relaxation: objective 9.279736e+00, 89 iterations, 0.00 seconds

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

     0     0    9.27974    0   38    7.00000    9.27974  32.6%     -    0s
     0     0    8.69327    0   43    7.00000    8.69327  24.2%     -    0s
     0     0    8.64338    0   39    7.00000    8.64338  23.5%     -    0s
     0     0    8.63198    0   42    7.00000    8.63198  23.3%     -    0s
     0     0    8.59798    0   41    7.00000    8.59798  22.8%     -    0s
     0     0    8.58866    0   42    7.00000    8.58866  22.7%     -    0s
     0     0    8.58720    0   43    7.00000    8.58720  22.7%     -    0s
     0     2    8.58387    0   43    7.00000    8.58387  22.6%     -    0s

Cutting planes:
  Clique: 15
  Zero half: 9

Explored 8 nodes (372 simplex iterations) in 0.05 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%