Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:44:30 2012

Optimize a model with 1523 rows, 79 columns and 3046 nonzeros
Presolve removed 1068 rows and 0 columns
Presolve time: 0.03s
Presolved: 455 rows, 79 columns, 2912 nonzeros
Variable types: 0 continuous, 79 integer (79 binary)
Found heuristic solution: objective 6.0000000

Root relaxation: objective 1.209681e+01, 279 iterations, 0.01 seconds

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

     0     0   12.09681    0   67    6.00000   12.09681   102%     -    0s
H    0     0                       8.0000000   12.09681  51.2%     -    0s
     0     0   11.80585    0   77    8.00000   11.80585  47.6%     -    0s
     0     0   11.71602    0   76    8.00000   11.71602  46.5%     -    0s
     0     0   11.70992    0   76    8.00000   11.70992  46.4%     -    0s
     0     0   11.69973    0   77    8.00000   11.69973  46.2%     -    0s
H    0     0                       9.0000000   11.69973  30.0%     -    0s
     0     0   11.69663    0   77    9.00000   11.69663  30.0%     -    0s
     0     0   11.69645    0   77    9.00000   11.69645  30.0%     -    0s
     0     0   11.69606    0   76    9.00000   11.69606  30.0%     -    0s
     0     0   11.69597    0   77    9.00000   11.69597  30.0%     -    0s
     0     2   11.69447    0   77    9.00000   11.69447  29.9%     -    0s

Cutting planes:
  Gomory: 1
  Clique: 35

Explored 29 nodes (2173 simplex iterations) in 0.53 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 9.000000000000e+00, best bound 9.000000000000e+00, gap 0.0%