Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:57 2012

Optimize a model with 1283 rows, 71 columns and 2566 nonzeros
Presolve removed 887 rows and 0 columns
Presolve time: 0.02s
Presolved: 396 rows, 71 columns, 2476 nonzeros
Variable types: 0 continuous, 71 integer (71 binary)
Found heuristic solution: objective 7.0000000

Root relaxation: objective 1.089977e+01, 210 iterations, 0.00 seconds

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

     0     0   10.89977    0   66    7.00000   10.89977  55.7%     -    0s
     0     0   10.68212    0   70    7.00000   10.68212  52.6%     -    0s
     0     0   10.58862    0   69    7.00000   10.58862  51.3%     -    0s
     0     0   10.57483    0   71    7.00000   10.57483  51.1%     -    0s
     0     0   10.56617    0   71    7.00000   10.56617  50.9%     -    0s
     0     0   10.56138    0   71    7.00000   10.56138  50.9%     -    0s
     0     0   10.55584    0   70    7.00000   10.55584  50.8%     -    0s
     0     0   10.54677    0   70    7.00000   10.54677  50.7%     -    0s
H    0     0                       8.0000000   10.54677  31.8%     -    0s
     0     0   10.54524    0   71    8.00000   10.54524  31.8%     -    0s
     0     0   10.54509    0   71    8.00000   10.54509  31.8%     -    0s
     0     2   10.53799    0   71    8.00000   10.53799  31.7%     -    0s

Cutting planes:
  Gomory: 1
  Clique: 40
  Zero half: 6

Explored 31 nodes (1801 simplex iterations) in 0.37 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%