Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:18 2012

Optimize a model with 650 rows, 51 columns and 1300 nonzeros
Presolve removed 459 rows and 0 columns
Presolve time: 0.01s
Presolved: 191 rows, 51 columns, 1094 nonzeros
Variable types: 0 continuous, 51 integer (51 binary)
Found heuristic solution: objective 6.0000000

Root relaxation: objective 9.073786e+00, 90 iterations, 0.00 seconds

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

     0     0    9.07379    0   45    6.00000    9.07379  51.2%     -    0s
H    0     0                       7.0000000    9.07379  29.6%     -    0s
     0     0    8.68589    0   46    7.00000    8.68589  24.1%     -    0s
     0     0    8.57163    0   45    7.00000    8.57163  22.5%     -    0s
     0     0    8.55514    0   46    7.00000    8.55514  22.2%     -    0s
     0     0    8.52451    0   46    7.00000    8.52451  21.8%     -    0s
     0     0    8.51440    0   46    7.00000    8.51440  21.6%     -    0s
     0     0    8.50497    0   46    7.00000    8.50497  21.5%     -    0s
     0     0    8.50360    0   45    7.00000    8.50360  21.5%     -    0s
     0     0    8.50328    0   46    7.00000    8.50328  21.5%     -    0s
     0     2    8.50319    0   46    7.00000    8.50319  21.5%     -    0s

Cutting planes:
  Clique: 22
  Zero half: 6

Explored 9 nodes (454 simplex iterations) in 0.07 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 7.000000000000e+00, best bound 7.000000000000e+00, gap 0.0%