Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:45:03 2012

Optimize a model with 1739 rows, 84 columns and 3478 nonzeros
Presolve removed 1192 rows and 0 columns
Presolve time: 0.05s
Presolved: 547 rows, 84 columns, 3463 nonzeros
Variable types: 0 continuous, 84 integer (84 binary)
Found heuristic solution: objective 6.0000000

Root relaxation: objective 1.290068e+01, 300 iterations, 0.01 seconds

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

     0     0   12.90068    0   81    6.00000   12.90068   115%     -    0s
H    0     0                       7.0000000   12.90068  84.3%     -    0s
     0     0   12.58511    0   84    7.00000   12.58511  79.8%     -    0s
     0     0   12.54712    0   83    7.00000   12.54712  79.2%     -    0s
H    0     0                       8.0000000   12.54712  56.8%     -    0s
     0     0   12.50940    0   84    8.00000   12.50940  56.4%     -    0s
     0     0   12.48185    0   84    8.00000   12.48185  56.0%     -    0s
H    0     0                       9.0000000   12.48185  38.7%     -    0s
     0     0   12.47734    0   84    9.00000   12.47734  38.6%     -    0s
     0     0   12.47709    0   83    9.00000   12.47709  38.6%     -    0s
     0     0   12.46924    0   84    9.00000   12.46924  38.5%     -    0s
     0     0   12.46547    0   84    9.00000   12.46547  38.5%     -    0s
     0     0   12.46116    0   84    9.00000   12.46116  38.5%     -    0s
     0     2   12.46079    0   84    9.00000   12.46079  38.5%     -    0s

Cutting planes:
  Gomory: 1
  Clique: 35
  Zero half: 8

Explored 51 nodes (3549 simplex iterations) in 0.72 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 9.000000000000e+00, best bound 9.000000000000e+00, gap 0.0%