Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:44:42 2012

Optimize a model with 1629 rows, 81 columns and 3258 nonzeros
Presolve removed 1167 rows and 0 columns
Presolve time: 0.04s
Presolved: 462 rows, 81 columns, 2966 nonzeros
Variable types: 0 continuous, 81 integer (81 binary)
Found heuristic solution: objective 5.0000000

Root relaxation: objective 1.225309e+01, 265 iterations, 0.01 seconds

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

     0     0   12.25309    0   76    5.00000   12.25309   145%     -    0s
H    0     0                       6.0000000   12.25309   104%     -    0s
H    0     0                       7.0000000   12.25309  75.0%     -    0s
     0     0   11.76530    0   79    7.00000   11.76530  68.1%     -    0s
H    0     0                       8.0000000   11.76530  47.1%     -    0s
H    0     0                       9.0000000   11.76530  30.7%     -    0s
     0     0   11.75271    0   78    9.00000   11.75271  30.6%     -    0s
     0     0   11.74525    0   79    9.00000   11.74525  30.5%     -    0s
     0     0   11.73090    0   81    9.00000   11.73090  30.3%     -    0s
     0     0   11.72966    0   81    9.00000   11.72966  30.3%     -    0s
     0     0   11.72963    0   81    9.00000   11.72963  30.3%     -    0s
     0     2   11.72736    0   81    9.00000   11.72736  30.3%     -    0s

Cutting planes:
  Clique: 30
  Zero half: 4

Explored 29 nodes (2160 simplex iterations) in 0.41 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%