Gurobi 5.0.1 (linux64) logging started Fri Nov 16 01:51:18 2012

Optimize a model with 6929 rows, 930 columns and 21568 nonzeros
Presolve removed 2 rows and 2 columns
Presolve time: 0.08s
Presolved: 6927 rows, 928 columns, 25492 nonzeros
Variable types: 0 continuous, 928 integer (928 binary)
Found heuristic solution: objective 30.0000000

Root relaxation: objective 3.483444e+00, 5542 iterations, 0.34 seconds

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

     0     0    3.48344    0  829   30.00000    3.48344  88.4%     -    0s
     0     0    6.00836    0  764   30.00000    6.00836  80.0%     -    1s
H    0     0                      18.0000000    6.00836  66.6%     -    1s
H    0     0                       8.0000000    6.00836  24.9%     -    1s
     0     0    6.13287    0  656    8.00000    6.13287  23.3%     -    2s
     0     0    6.13287    0  663    8.00000    6.13287  23.3%     -    2s
     0     0    6.16342    0  598    8.00000    6.16342  23.0%     -    3s
     0     0    6.16342    0  624    8.00000    6.16342  23.0%     -    3s
     0     0    6.16342    0  594    8.00000    6.16342  23.0%     -    4s
     0     0    6.16342    0  594    8.00000    6.16342  23.0%     -    4s
     0     0    6.16342    0  574    8.00000    6.16342  23.0%     -    5s
     0     2    6.16667    0  567    8.00000    6.16667  22.9%     -    7s
H   54     3                       7.0000000    7.00000   0.0%  87.9    8s

Cutting planes:
  Gomory: 24
  Clique: 5
  Zero half: 9

Explored 54 nodes (26083 simplex iterations) in 8.43 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%