Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:45:48 2012

Optimize a model with 1970 rows, 89 columns and 3940 nonzeros
Presolve removed 1418 rows and 0 columns
Presolve time: 0.05s
Presolved: 552 rows, 89 columns, 3668 nonzeros
Variable types: 0 continuous, 89 integer (89 binary)
Found heuristic solution: objective 8.0000000

Root relaxation: objective 1.307877e+01, 350 iterations, 0.01 seconds

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

     0     0   13.07877    0   86    8.00000   13.07877  63.5%     -    0s
     0     0   12.67551    0   86    8.00000   12.67551  58.4%     -    0s
     0     0   12.63096    0   89    8.00000   12.63096  57.9%     -    0s
H    0     0                       9.0000000   12.63096  40.3%     -    0s
     0     0   12.62344    0   88    9.00000   12.62344  40.3%     -    0s
     0     0   12.61355    0   88    9.00000   12.61355  40.2%     -    0s
     0     0   12.58173    0   89    9.00000   12.58173  39.8%     -    0s
     0     0   12.57101    0   89    9.00000   12.57101  39.7%     -    0s
     0     0   12.56872    0   89    9.00000   12.56872  39.7%     -    0s
     0     0   12.56328    0   89    9.00000   12.56328  39.6%     -    0s
     0     0   12.56230    0   89    9.00000   12.56230  39.6%     -    0s
     0     0   12.56227    0   89    9.00000   12.56227  39.6%     -    0s
     0     2   12.55780    0   89    9.00000   12.55780  39.5%     -    0s

Cutting planes:
  Clique: 64
  Zero half: 3

Explored 65 nodes (4906 simplex iterations) in 0.96 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%