Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:20 2012

Optimize a model with 704 rows, 53 columns and 1408 nonzeros
Presolve removed 481 rows and 0 columns
Presolve time: 0.01s
Presolved: 223 rows, 53 columns, 1282 nonzeros
Variable types: 0 continuous, 53 integer (53 binary)
Found heuristic solution: objective 5.0000000

Root relaxation: objective 9.509247e+00, 115 iterations, 0.00 seconds

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

     0     0    9.50925    0   48    5.00000    9.50925  90.2%     -    0s
H    0     0                       6.0000000    9.50925  58.5%     -    0s
H    0     0                       7.0000000    9.50925  35.8%     -    0s
     0     0    9.23321    0   50    7.00000    9.23321  31.9%     -    0s
H    0     0                       8.0000000    9.23321  15.4%     -    0s
     0     0    9.17057    0   48    8.00000    9.17057  14.6%     -    0s
     0     0    9.14168    0   49    8.00000    9.14168  14.3%     -    0s
     0     0    9.12627    0   50    8.00000    9.12627  14.1%     -    0s
     0     0    9.12390    0   50    8.00000    9.12390  14.0%     -    0s
     0     0    9.11074    0   50    8.00000    9.11074  13.9%     -    0s
     0     0    9.09970    0   46    8.00000    9.09970  13.7%     -    0s
     0     0    9.00910    0   49    8.00000    9.00910  12.6%     -    0s

Cutting planes:
  Clique: 21
  Zero half: 4

Explored 0 nodes (318 simplex iterations) in 0.08 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%