Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:14 2012

Optimize a model with 468 rows, 43 columns and 936 nonzeros
Presolve removed 316 rows and 0 columns
Presolve time: 0.01s
Presolved: 152 rows, 43 columns, 789 nonzeros
Variable types: 0 continuous, 43 integer (43 binary)
Found heuristic solution: objective 6.0000000

Root relaxation: objective 8.742857e+00, 89 iterations, 0.00 seconds

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

     0     0    8.74286    0   38    6.00000    8.74286  45.7%     -    0s
H    0     0                       7.0000000    8.74286  24.9%     -    0s
     0     0    8.30714    0   40    7.00000    8.30714  18.7%     -    0s
     0     0    8.21533    0   39    7.00000    8.21533  17.4%     -    0s
     0     0    8.15918    0   40    7.00000    8.15918  16.6%     -    0s
     0     0    8.15315    0   41    7.00000    8.15315  16.5%     -    0s
     0     2    8.15282    0   41    7.00000    8.15282  16.5%     -    0s

Cutting planes:
  Gomory: 1
  Clique: 15
  Zero half: 7

Explored 3 nodes (265 simplex iterations) in 0.04 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%