Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:45:55 2012

Optimize a model with 1977 rows, 90 columns and 3954 nonzeros
Presolve removed 1408 rows and 0 columns
Presolve time: 0.05s
Presolved: 569 rows, 90 columns, 3625 nonzeros
Variable types: 0 continuous, 90 integer (90 binary)
Found heuristic solution: objective 6.0000000

Root relaxation: objective 1.329854e+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   13.29854    0   87    6.00000   13.29854   122%     -    0s
H    0     0                       9.0000000   13.29854  47.8%     -    0s
     0     0   13.07930    0   88    9.00000   13.07930  45.3%     -    0s
     0     0   13.05927    0   88    9.00000   13.05927  45.1%     -    0s
     0     0   13.04253    0   88    9.00000   13.04253  44.9%     -    0s
     0     0   13.03186    0   89    9.00000   13.03186  44.8%     -    0s
     0     0   13.01304    0   88    9.00000   13.01304  44.6%     -    0s
     0     0   13.00805    0   87    9.00000   13.00805  44.5%     -    0s
     0     0   13.00493    0   88    9.00000   13.00493  44.5%     -    0s
     0     0   13.00472    0   88    9.00000   13.00472  44.5%     -    0s
     0     2   13.00443    0   88    9.00000   13.00443  44.5%     -    0s

Cutting planes:
  Gomory: 2
  Clique: 25
  Zero half: 12

Explored 76 nodes (5164 simplex iterations) in 0.67 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%