Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:45:44 2012

Optimize a model with 1920 rows, 89 columns and 3840 nonzeros
Presolve removed 1339 rows and 0 columns
Presolve time: 0.05s
Presolved: 581 rows, 89 columns, 3672 nonzeros
Variable types: 0 continuous, 89 integer (89 binary)
Found heuristic solution: objective 7.0000000

Root relaxation: objective 1.339113e+01, 298 iterations, 0.01 seconds

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

     0     0   13.39113    0   82    7.00000   13.39113  91.3%     -    0s
H    0     0                       8.0000000   13.39113  67.4%     -    0s
     0     0   13.10500    0   87    8.00000   13.10500  63.8%     -    0s
     0     0   13.03324    0   87    8.00000   13.03324  62.9%     -    0s
     0     0   13.00360    0   87    8.00000   13.00360  62.5%     -    0s
     0     0   12.99378    0   88    8.00000   12.99378  62.4%     -    0s
     0     0   12.97127    0   88    8.00000   12.97127  62.1%     -    0s
H    0     0                       9.0000000   12.97127  44.1%     -    0s
     0     0   12.96845    0   88    9.00000   12.96845  44.1%     -    0s
     0     0   12.96089    0   88    9.00000   12.96089  44.0%     -    0s
     0     0   12.95360    0   88    9.00000   12.95360  43.9%     -    0s
     0     2   12.95131    0   88    9.00000   12.95131  43.9%     -    0s

Cutting planes:
  Clique: 41
  Zero half: 4

Explored 110 nodes (6038 simplex iterations) in 0.80 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%