Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:31 2012

Optimize a model with 942 rows, 61 columns and 1884 nonzeros
Presolve removed 651 rows and 0 columns
Presolve time: 0.02s
Presolved: 291 rows, 61 columns, 1766 nonzeros
Variable types: 0 continuous, 61 integer (61 binary)
Found heuristic solution: objective 6.0000000

Root relaxation: objective 9.947994e+00, 159 iterations, 0.00 seconds

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

     0     0    9.94799    0   56    6.00000    9.94799  65.8%     -    0s
H    0     0                       7.0000000    9.94799  42.1%     -    0s
     0     0    9.70361    0   57    7.00000    9.70361  38.6%     -    0s
     0     0    9.62244    0   58    7.00000    9.62244  37.5%     -    0s
     0     0    9.60424    0   58    7.00000    9.60424  37.2%     -    0s
     0     0    9.57665    0   58    7.00000    9.57665  36.8%     -    0s
H    0     0                       8.0000000    9.57665  19.7%     -    0s
     0     0    9.53530    0   58    8.00000    9.53530  19.2%     -    0s
     0     0    9.51920    0   60    8.00000    9.51920  19.0%     -    0s
     0     0    9.51263    0   60    8.00000    9.51263  18.9%     -    0s
     0     0    9.51197    0   60    8.00000    9.51197  18.9%     -    0s
     0     2    9.50765    0   60    8.00000    9.50765  18.8%     -    0s

Cutting planes:
  Clique: 24
  Zero half: 9

Explored 8 nodes (741 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%