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

Optimize a model with 447 rows, 42 columns and 894 nonzeros
Presolve removed 304 rows and 0 columns
Presolve time: 0.01s
Presolved: 143 rows, 42 columns, 798 nonzeros
Variable types: 0 continuous, 42 integer (42 binary)
Found heuristic solution: objective 5.0000000

Root relaxation: objective 8.142857e+00, 91 iterations, 0.00 seconds

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

     0     0    8.14286    0   30    5.00000    8.14286  62.9%     -    0s
H    0     0                       6.0000000    8.14286  35.7%     -    0s
     0     0    7.90101    0   38    6.00000    7.90101  31.7%     -    0s
     0     0    7.81351    0   38    6.00000    7.81351  30.2%     -    0s
     0     0    7.76957    0   39    6.00000    7.76957  29.5%     -    0s
H    0     0                       7.0000000    7.76957  11.0%     -    0s

Cutting planes:
  Gomory: 2
  Clique: 6
  Zero half: 9

Explored 0 nodes (221 simplex iterations) in 0.02 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%