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

Optimize a model with 664 rows, 52 columns and 1328 nonzeros
Presolve removed 464 rows and 0 columns
Presolve time: 0.01s
Presolved: 200 rows, 52 columns, 1148 nonzeros
Variable types: 0 continuous, 52 integer (52 binary)
Found heuristic solution: objective 6.0000000

Root relaxation: objective 9.383701e+00, 118 iterations, 0.00 seconds

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

     0     0    9.38370    0   42    6.00000    9.38370  56.4%     -    0s
H    0     0                       7.0000000    9.38370  34.1%     -    0s
     0     0    9.00000    0   38    7.00000    9.00000  28.6%     -    0s
     0     0    9.00000    0   37    7.00000    9.00000  28.6%     -    0s
     0     0    9.00000    0   43    7.00000    9.00000  28.6%     -    0s
     0     0    8.99733    0   46    7.00000    8.99733  28.5%     -    0s
     0     0    8.98961    0   48    7.00000    8.98961  28.4%     -    0s
     0     0    8.97381    0   48    7.00000    8.97381  28.2%     -    0s
     0     0    8.96973    0   48    7.00000    8.96973  28.1%     -    0s
     0     0    8.96834    0   48    7.00000    8.96834  28.1%     -    0s
     0     0    8.96834    0   48    7.00000    8.96834  28.1%     -    0s
     0     2    8.96798    0   48    7.00000    8.96798  28.1%     -    0s

Cutting planes:
  Gomory: 1
  Clique: 27
  Zero half: 8

Explored 17 nodes (883 simplex iterations) in 0.09 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%