Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:55 2012

Optimize a model with 1208 rows, 71 columns and 2416 nonzeros
Presolve removed 837 rows and 0 columns
Presolve time: 0.03s
Presolved: 371 rows, 71 columns, 2214 nonzeros
Variable types: 0 continuous, 71 integer (71 binary)
Found heuristic solution: objective 6.0000000

Root relaxation: objective 1.195639e+01, 225 iterations, 0.00 seconds

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

     0     0   11.95639    0   64    6.00000   11.95639  99.3%     -    0s
H    0     0                       7.0000000   11.95639  70.8%     -    0s
     0     0   11.45547    0   70    7.00000   11.45547  63.6%     -    0s
H    0     0                       8.0000000   11.45547  43.2%     -    0s
     0     0   11.40817    0   69    8.00000   11.40817  42.6%     -    0s
     0     0   11.40169    0   68    8.00000   11.40169  42.5%     -    0s
     0     2   11.40068    0   68    8.00000   11.40068  42.5%     -    0s
*   56     2               3       9.0000000   10.27418  14.2%  37.5    0s

Cutting planes:
  Clique: 35
  Zero half: 4

Explored 59 nodes (2497 simplex iterations) in 0.22 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%