Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:44:35 2012

Optimize a model with 1543 rows, 80 columns and 3086 nonzeros
Presolve removed 1070 rows and 0 columns
Presolve time: 0.04s
Presolved: 473 rows, 80 columns, 2956 nonzeros
Variable types: 0 continuous, 80 integer (80 binary)
Found heuristic solution: objective 7.0000000

Root relaxation: objective 1.279545e+01, 314 iterations, 0.01 seconds

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

     0     0   12.79545    0   72    7.00000   12.79545  82.8%     -    0s
H    0     0                       9.0000000   12.79545  42.2%     -    0s
     0     0   12.43580    0   77    9.00000   12.43580  38.2%     -    0s
     0     0   12.40792    0   76    9.00000   12.40792  37.9%     -    0s
     0     0   12.35966    0   75    9.00000   12.35966  37.3%     -    0s
     0     0   12.34675    0   76    9.00000   12.34675  37.2%     -    0s
     0     0   12.33116    0   76    9.00000   12.33116  37.0%     -    0s
     0     0   12.32404    0   76    9.00000   12.32404  36.9%     -    0s
     0     0   12.31456    0   76    9.00000   12.31456  36.8%     -    0s
     0     0   12.31327    0   76    9.00000   12.31327  36.8%     -    0s
     0     0   12.31080    0   76    9.00000   12.31080  36.8%     -    0s
     0     2   12.31072    0   76    9.00000   12.31072  36.8%     -    0s

Cutting planes:
  Clique: 43
  Zero half: 6

Explored 47 nodes (2986 simplex iterations) in 0.45 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%