Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:44:10 2012

Optimize a model with 1374 rows, 75 columns and 2748 nonzeros
Presolve removed 980 rows and 0 columns
Presolve time: 0.03s
Presolved: 394 rows, 75 columns, 2489 nonzeros
Variable types: 0 continuous, 75 integer (75 binary)
Found heuristic solution: objective 6.0000000

Root relaxation: objective 1.183152e+01, 215 iterations, 0.01 seconds

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

     0     0   11.83152    0   69    6.00000   11.83152  97.2%     -    0s
H    0     0                       7.0000000   11.83152  69.0%     -    0s
     0     0   11.51961    0   73    7.00000   11.51961  64.6%     -    0s
H    0     0                       8.0000000   11.51961  44.0%     -    0s
     0     0   11.41901    0   75    8.00000   11.41901  42.7%     -    0s
     0     0   11.40314    0   74    8.00000   11.40314  42.5%     -    0s
     0     0   11.39117    0   74    8.00000   11.39117  42.4%     -    0s
     0     0   11.37183    0   73    8.00000   11.37183  42.1%     -    0s
     0     0   11.32293    0   74    8.00000   11.32293  41.5%     -    0s
     0     0   11.24400    0   74    8.00000   11.24400  40.6%     -    0s
     0     0   11.22550    0   74    8.00000   11.22550  40.3%     -    0s
     0     0   11.21541    0   75    8.00000   11.21541  40.2%     -    0s
     0     0   11.21475    0   75    8.00000   11.21475  40.2%     -    0s
     0     0   11.21472    0   75    8.00000   11.21472  40.2%     -    0s
     0     2   11.21349    0   75    8.00000   11.21349  40.2%     -    0s

Cutting planes:
  Clique: 31
  Zero half: 5

Explored 59 nodes (3119 simplex iterations) in 0.48 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%