Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:44:46 2012

Optimize a model with 1629 rows, 81 columns and 3258 nonzeros
Presolve removed 1160 rows and 0 columns
Presolve time: 0.04s
Presolved: 469 rows, 81 columns, 3080 nonzeros
Variable types: 0 continuous, 81 integer (81 binary)
Found heuristic solution: objective 7.0000000

Root relaxation: objective 1.250559e+01, 221 iterations, 0.01 seconds

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

     0     0   12.50559    0   70    7.00000   12.50559  78.7%     -    0s
     0     0   11.97135    0   78    7.00000   11.97135  71.0%     -    0s
H    0     0                       8.0000000   11.97135  49.6%     -    0s
     0     0   11.91817    0   79    8.00000   11.91817  49.0%     -    0s
     0     0   11.88382    0   77    8.00000   11.88382  48.5%     -    0s
     0     0   11.85790    0   77    8.00000   11.85790  48.2%     -    0s
     0     0   11.84698    0   78    8.00000   11.84698  48.1%     -    0s
     0     0   11.84489    0   78    8.00000   11.84489  48.1%     -    0s
H    0     0                       9.0000000   11.84489  31.6%     -    0s
     0     0   11.83639    0   78    9.00000   11.83639  31.5%     -    0s
     0     0   11.83139    0   78    9.00000   11.83139  31.5%     -    0s
     0     0   11.82841    0   76    9.00000   11.82841  31.4%     -    0s
     0     0   11.82774    0   77    9.00000   11.82774  31.4%     -    0s
     0     0   11.82699    0   78    9.00000   11.82699  31.4%     -    0s
     0     0   11.82699    0   78    9.00000   11.82699  31.4%     -    0s
     0     2   11.82525    0   78    9.00000   11.82525  31.4%     -    0s

Cutting planes:
  Clique: 54
  Zero half: 3

Explored 31 nodes (2412 simplex iterations) in 0.55 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%