Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:21 2012

Optimize a model with 718 rows, 54 columns and 1436 nonzeros
Presolve removed 510 rows and 0 columns
Presolve time: 0.01s
Presolved: 208 rows, 54 columns, 1201 nonzeros
Variable types: 0 continuous, 54 integer (54 binary)
Found heuristic solution: objective 5.0000000

Root relaxation: objective 9.421093e+00, 123 iterations, 0.00 seconds

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

     0     0    9.42109    0   49    5.00000    9.42109  88.4%     -    0s
H    0     0                       6.0000000    9.42109  57.0%     -    0s
H    0     0                       7.0000000    9.42109  34.6%     -    0s
     0     0    9.12533    0   51    7.00000    9.12533  30.4%     -    0s
     0     0    9.02435    0   51    7.00000    9.02435  28.9%     -    0s
     0     0    8.96772    0   52    7.00000    8.96772  28.1%     -    0s
     0     0    8.94164    0   51    7.00000    8.94164  27.7%     -    0s
     0     0    8.93243    0   52    7.00000    8.93243  27.6%     -    0s
     0     0    8.91659    0   52    7.00000    8.91659  27.4%     -    0s
     0     0    8.89358    0   53    7.00000    8.89358  27.1%     -    0s
     0     0    8.89270    0   52    7.00000    8.89270  27.0%     -    0s
     0     0    8.87975    0   53    7.00000    8.87975  26.9%     -    0s
     0     0    8.87966    0   53    7.00000    8.87966  26.9%     -    0s
     0     2    8.87690    0   53    7.00000    8.87690  26.8%     -    0s

Cutting planes:
  Clique: 23
  Zero half: 6

Explored 14 nodes (810 simplex iterations) in 0.11 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%