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

Optimize a model with 654 rows, 52 columns and 1308 nonzeros
Presolve removed 469 rows and 0 columns
Presolve time: 0.01s
Presolved: 185 rows, 52 columns, 1032 nonzeros
Variable types: 0 continuous, 52 integer (52 binary)
Found heuristic solution: objective 6.0000000

Root relaxation: objective 9.347840e+00, 122 iterations, 0.00 seconds

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

     0     0    9.34784    0   48    6.00000    9.34784  55.8%     -    0s
     0     0    9.07755    0   47    6.00000    9.07755  51.3%     -    0s
     0     0    9.00684    0   50    6.00000    9.00684  50.1%     -    0s
H    0     0                       7.0000000    9.00684  28.7%     -    0s
     0     0    8.95532    0   48    7.00000    8.95532  27.9%     -    0s
     0     0    8.92504    0   49    7.00000    8.92504  27.5%     -    0s
     0     0    8.91502    0   48    7.00000    8.91502  27.4%     -    0s
     0     0    8.91479    0   49    7.00000    8.91479  27.4%     -    0s
     0     2    8.91467    0   49    7.00000    8.91467  27.4%     -    0s

Cutting planes:
  Gomory: 1
  Clique: 20
  Zero half: 4

Explored 13 nodes (780 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%