Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:46:07 2012

Optimize a model with 2063 rows, 91 columns and 4126 nonzeros
Presolve removed 1451 rows and 0 columns
Presolve time: 0.06s
Presolved: 612 rows, 91 columns, 4067 nonzeros
Variable types: 0 continuous, 91 integer (91 binary)
Found heuristic solution: objective 6.0000000

Root relaxation: objective 1.353057e+01, 318 iterations, 0.01 seconds

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

     0     0   13.53057    0   89    6.00000   13.53057   126%     -    0s
H    0     0                       7.0000000   13.53057  93.3%     -    0s
H    0     0                       8.0000000   13.53057  69.1%     -    0s
     0     0   13.08658    0   89    8.00000   13.08658  63.6%     -    0s
     0     0   13.03586    0   91    8.00000   13.03586  62.9%     -    0s
     0     0   13.01021    0   91    8.00000   13.01021  62.6%     -    0s
     0     0   12.98634    0   91    8.00000   12.98634  62.3%     -    0s
     0     0   12.95716    0   91    8.00000   12.95716  62.0%     -    0s
     0     0   12.95040    0   91    8.00000   12.95040  61.9%     -    0s
     0     0   12.94889    0   91    8.00000   12.94889  61.9%     -    0s
H    0     0                       9.0000000   12.94889  43.9%     -    0s
     0     0   12.93664    0   91    9.00000   12.93664  43.7%     -    0s
     0     0   12.93579    0   91    9.00000   12.93579  43.7%     -    0s
     0     2   12.93237    0   91    9.00000   12.93237  43.7%     -    0s

Cutting planes:
  Clique: 46
  Zero half: 1

Explored 70 nodes (5767 simplex iterations) in 1.13 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%