Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:44:45 2012

Optimize a model with 1632 rows, 81 columns and 3264 nonzeros
Presolve removed 1156 rows and 0 columns
Presolve time: 0.03s
Presolved: 476 rows, 81 columns, 3141 nonzeros
Variable types: 0 continuous, 81 integer (81 binary)
Found heuristic solution: objective 6.0000000

Root relaxation: objective 1.247527e+01, 273 iterations, 0.01 seconds

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

     0     0   12.47527    0   70    6.00000   12.47527   108%     -    0s
H    0     0                       7.0000000   12.47527  78.2%     -    0s
     0     0   11.99814    0   78    7.00000   11.99814  71.4%     -    0s
     0     0   11.94376    0   79    7.00000   11.94376  70.6%     -    0s
H    0     0                       8.0000000   11.94376  49.3%     -    0s
     0     0   11.88948    0   78    8.00000   11.88948  48.6%     -    0s
     0     0   11.87595    0   78    8.00000   11.87595  48.4%     -    0s
     0     0   11.87306    0   78    8.00000   11.87306  48.4%     -    0s
     0     0   11.87230    0   79    8.00000   11.87230  48.4%     -    0s
     0     0   11.85509    0   79    8.00000   11.85509  48.2%     -    0s
     0     0   11.83248    0   80    8.00000   11.83248  47.9%     -    0s
     0     0   11.83195    0   80    8.00000   11.83195  47.9%     -    0s
     0     0   11.83192    0   80    8.00000   11.83192  47.9%     -    0s
     0     2   11.83053    0   80    8.00000   11.83053  47.9%     -    0s
*   82     6               4       9.0000000   10.38504  15.4%  42.9    0s

Cutting planes:
  Clique: 59
  Zero half: 1

Explored 89 nodes (4141 simplex iterations) in 0.64 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%