Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:44:38 2012

Optimize a model with 1630 rows, 80 columns and 3260 nonzeros
Presolve removed 1142 rows and 0 columns
Presolve time: 0.04s
Presolved: 488 rows, 80 columns, 3170 nonzeros
Variable types: 0 continuous, 80 integer (80 binary)
Found heuristic solution: objective 6.0000000

Root relaxation: objective 1.158612e+01, 241 iterations, 0.01 seconds

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

     0     0   11.58612    0   76    6.00000   11.58612  93.1%     -    0s
H    0     0                       8.0000000   11.58612  44.8%     -    0s
     0     0   11.43368    0   77    8.00000   11.43368  42.9%     -    0s
     0     0   11.38063    0   76    8.00000   11.38063  42.3%     -    0s
     0     0   11.35662    0   75    8.00000   11.35662  42.0%     -    0s
     0     0   11.34827    0   77    8.00000   11.34827  41.9%     -    0s
     0     0   11.32130    0   79    8.00000   11.32130  41.5%     -    0s
     0     0   11.31558    0   78    8.00000   11.31558  41.4%     -    0s
     0     0   11.31255    0   78    8.00000   11.31255  41.4%     -    0s
     0     0   11.30946    0   79    8.00000   11.30946  41.4%     -    0s
     0     0   11.30714    0   79    8.00000   11.30714  41.3%     -    0s
     0     0   11.30690    0   79    8.00000   11.30690  41.3%     -    0s
     0     0   11.30674    0   79    8.00000   11.30674  41.3%     -    0s
     0     2   11.30634    0   79    8.00000   11.30634  41.3%     -    0s

Cutting planes:
  Gomory: 2
  Clique: 35
  Zero half: 9

Explored 59 nodes (3744 simplex iterations) in 0.71 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%