Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:56 2012

Optimize a model with 1283 rows, 71 columns and 2566 nonzeros
Presolve removed 915 rows and 0 columns
Presolve time: 0.03s
Presolved: 368 rows, 71 columns, 2377 nonzeros
Variable types: 0 continuous, 71 integer (71 binary)
Found heuristic solution: objective 7.0000000

Root relaxation: objective 1.119091e+01, 246 iterations, 0.00 seconds

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

     0     0   11.19091    0   57    7.00000   11.19091  59.9%     -    0s
     0     0   10.77821    0   66    7.00000   10.77821  54.0%     -    0s
     0     0   10.70691    0   68    7.00000   10.70691  53.0%     -    0s
     0     0   10.67835    0   68    7.00000   10.67835  52.5%     -    0s
H    0     0                       8.0000000   10.67835  33.5%     -    0s
     0     0   10.66138    0   68    8.00000   10.66138  33.3%     -    0s
     0     0   10.66070    0   68    8.00000   10.66070  33.3%     -    0s
     0     0   10.66066    0   68    8.00000   10.66066  33.3%     -    0s
     0     2   10.65036    0   68    8.00000   10.65036  33.1%     -    0s

Cutting planes:
  Clique: 48
  Zero half: 3

Explored 37 nodes (1910 simplex iterations) in 0.25 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 8.000000000000e+00, best bound 8.000000000000e+00, gap 0.0%