Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:30 2012

Optimize a model with 885 rows, 60 columns and 1770 nonzeros
Presolve removed 604 rows and 0 columns
Presolve time: 0.01s
Presolved: 281 rows, 60 columns, 1604 nonzeros
Variable types: 0 continuous, 60 integer (60 binary)
Found heuristic solution: objective 7.0000000

Root relaxation: objective 1.011565e+01, 130 iterations, 0.00 seconds

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

     0     0   10.11565    0   58    7.00000   10.11565  44.5%     -    0s
     0     0    9.90626    0   58    7.00000    9.90626  41.5%     -    0s
H    0     0                       8.0000000    9.90626  23.8%     -    0s
     0     0    9.83666    0   59    8.00000    9.83666  23.0%     -    0s
     0     0    9.82736    0   56    8.00000    9.82736  22.8%     -    0s
     0     0    9.81821    0   58    8.00000    9.81821  22.7%     -    0s
     0     0    9.81285    0   58    8.00000    9.81285  22.7%     -    0s
     0     0    9.79885    0   58    8.00000    9.79885  22.5%     -    0s
     0     0    9.78960    0   59    8.00000    9.78960  22.4%     -    0s
     0     0    9.78846    0   59    8.00000    9.78846  22.4%     -    0s
     0     2    9.78745    0   59    8.00000    9.78745  22.3%     -    0s

Cutting planes:
  Gomory: 2
  Clique: 17
  Zero half: 11

Explored 12 nodes (789 simplex iterations) in 0.16 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%