Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:44:40 2012

Optimize a model with 1602 rows, 81 columns and 3204 nonzeros
Presolve removed 1128 rows and 0 columns
Presolve time: 0.04s
Presolved: 474 rows, 81 columns, 2979 nonzeros
Variable types: 0 continuous, 81 integer (81 binary)
Found heuristic solution: objective 8.0000000

Root relaxation: objective 1.260157e+01, 293 iterations, 0.01 seconds

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

     0     0   12.60157    0   74    8.00000   12.60157  57.5%     -    0s
     0     0   12.22509    0   77    8.00000   12.22509  52.8%     -    0s
     0     0   12.13872    0   79    8.00000   12.13872  51.7%     -    0s
     0     0   12.07634    0   79    8.00000   12.07634  51.0%     -    0s
     0     0   12.07254    0   79    8.00000   12.07254  50.9%     -    0s
     0     0   12.07009    0   79    8.00000   12.07009  50.9%     -    0s
     0     0   12.07008    0   79    8.00000   12.07008  50.9%     -    0s
     0     2   12.06980    0   79    8.00000   12.06980  50.9%     -    0s
*   58    14               5       9.0000000   11.47756  27.5%  43.1    0s

Cutting planes:
  Clique: 43

Explored 73 nodes (3654 simplex iterations) in 0.54 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%