Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:45:58 2012

Optimize a model with 2001 rows, 90 columns and 4002 nonzeros
Presolve removed 1381 rows and 0 columns
Presolve time: 0.05s
Presolved: 620 rows, 90 columns, 4099 nonzeros
Variable types: 0 continuous, 90 integer (90 binary)
Found heuristic solution: objective 7.0000000

Root relaxation: objective 1.362185e+01, 356 iterations, 0.01 seconds

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

     0     0   13.62185    0   83    7.00000   13.62185  94.6%     -    0s
H    0     0                       8.0000000   13.62185  70.3%     -    0s
     0     0   13.26564    0   87    8.00000   13.26564  65.8%     -    0s
     0     0   13.12564    0   85    8.00000   13.12564  64.1%     -    0s
     0     0   13.06408    0   86    8.00000   13.06408  63.3%     -    0s
     0     0   13.05199    0   87    8.00000   13.05199  63.1%     -    0s
     0     0   13.02512    0   85    8.00000   13.02512  62.8%     -    0s
H    0     0                       9.0000000   13.02512  44.7%     -    0s
     0     0   13.00328    0   87    9.00000   13.00328  44.5%     -    0s
     0     0   12.99965    0   87    9.00000   12.99965  44.4%     -    0s
     0     0   12.99711    0   87    9.00000   12.99711  44.4%     -    0s
     0     0   12.99335    0   87    9.00000   12.99335  44.4%     -    0s
     0     0   12.99202    0   87    9.00000   12.99202  44.4%     -    0s
     0     0   12.99168    0   87    9.00000   12.99168  44.4%     -    0s
     0     2   12.98816    0   87    9.00000   12.98816  44.3%     -    0s

Cutting planes:
  Clique: 60
  Zero half: 2

Explored 107 nodes (6303 simplex iterations) in 1.25 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%