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

Optimize a model with 935 rows, 61 columns and 1870 nonzeros
Presolve removed 658 rows and 0 columns
Presolve time: 0.02s
Presolved: 277 rows, 61 columns, 1671 nonzeros
Variable types: 0 continuous, 61 integer (61 binary)
Found heuristic solution: objective 6.0000000

Root relaxation: objective 9.819919e+00, 156 iterations, 0.00 seconds

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

     0     0    9.81992    0   58    6.00000    9.81992  63.7%     -    0s
H    0     0                       7.0000000    9.81992  40.3%     -    0s
H    0     0                       8.0000000    9.81992  22.7%     -    0s
     0     0    9.65225    0   58    8.00000    9.65225  20.7%     -    0s
     0     0    9.58610    0   56    8.00000    9.58610  19.8%     -    0s
     0     0    9.54681    0   58    8.00000    9.54681  19.3%     -    0s
     0     0    9.51889    0   58    8.00000    9.51889  19.0%     -    0s
     0     0    9.51135    0   60    8.00000    9.51135  18.9%     -    0s
     0     0    9.49885    0   60    8.00000    9.49885  18.7%     -    0s
     0     0    9.49193    0   58    8.00000    9.49193  18.6%     -    0s
     0     0    9.48882    0   59    8.00000    9.48882  18.6%     -    0s
     0     2    9.48879    0   59    8.00000    9.48879  18.6%     -    0s

Cutting planes:
  Clique: 15
  Zero half: 12

Explored 9 nodes (700 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%