Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:44:54 2012

Optimize a model with 1677 rows, 83 columns and 3354 nonzeros
Presolve removed 1194 rows and 0 columns
Presolve time: 0.05s
Presolved: 483 rows, 83 columns, 3129 nonzeros
Variable types: 0 continuous, 83 integer (83 binary)
Found heuristic solution: objective 7.0000000

Root relaxation: objective 1.276666e+01, 293 iterations, 0.01 seconds

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

     0     0   12.76666    0   69    7.00000   12.76666  82.4%     -    0s
     0     0   12.06839    0   81    7.00000   12.06839  72.4%     -    0s
H    0     0                       8.0000000   12.06839  50.9%     -    0s
     0     0   12.05448    0   80    8.00000   12.05448  50.7%     -    0s
     0     0   12.04371    0   81    8.00000   12.04371  50.5%     -    0s
H    0     0                       9.0000000   12.04371  33.8%     -    0s
     0     0   12.03766    0   82    9.00000   12.03766  33.8%     -    0s
     0     0   12.03687    0   82    9.00000   12.03687  33.7%     -    0s
     0     0   12.03297    0   82    9.00000   12.03297  33.7%     -    0s
     0     0   12.02950    0   82    9.00000   12.02950  33.7%     -    0s
     0     0   12.02821    0   82    9.00000   12.02821  33.6%     -    0s
     0     0   12.02692    0   82    9.00000   12.02692  33.6%     -    0s
     0     2   12.02589    0   82    9.00000   12.02589  33.6%     -    0s

Cutting planes:
  Clique: 50

Explored 37 nodes (2524 simplex iterations) in 0.65 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%