Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:26 2012

Optimize a model with 846 rows, 58 columns and 1692 nonzeros
Presolve removed 605 rows and 0 columns
Presolve time: 0.01s
Presolved: 241 rows, 58 columns, 1436 nonzeros
Variable types: 0 continuous, 58 integer (58 binary)
Found heuristic solution: objective 8.0000000

Root relaxation: objective 9.908280e+00, 129 iterations, 0.00 seconds

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

     0     0    9.90828    0   52    8.00000    9.90828  23.9%     -    0s
     0     0    9.51848    0   54    8.00000    9.51848  19.0%     -    0s
     0     0    9.42468    0   56    8.00000    9.42468  17.8%     -    0s
     0     0    9.40163    0   55    8.00000    9.40163  17.5%     -    0s
     0     0    9.36868    0   57    8.00000    9.36868  17.1%     -    0s
     0     0    9.36408    0   57    8.00000    9.36408  17.1%     -    0s
     0     0    9.36390    0   57    8.00000    9.36390  17.0%     -    0s
     0     0    9.34738    0   57    8.00000    9.34738  16.8%     -    0s
     0     0    9.32965    0   57    8.00000    9.32965  16.6%     -    0s
     0     0    9.32931    0   57    8.00000    9.32931  16.6%     -    0s
     0     2    9.32695    0   57    8.00000    9.32695  16.6%     -    0s

Cutting planes:
  Clique: 26
  Zero half: 8

Explored 7 nodes (528 simplex iterations) in 0.13 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%