Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:44:39 2012

Optimize a model with 1602 rows, 80 columns and 3204 nonzeros
Presolve removed 1120 rows and 0 columns
Presolve time: 0.04s
Presolved: 482 rows, 80 columns, 3133 nonzeros
Variable types: 0 continuous, 80 integer (80 binary)
Found heuristic solution: objective 7.0000000

Root relaxation: objective 1.224451e+01, 238 iterations, 0.01 seconds

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

     0     0   12.24451    0   74    7.00000   12.24451  74.9%     -    0s
H    0     0                       8.0000000   12.24451  53.1%     -    0s
     0     0   11.77522    0   79    8.00000   11.77522  47.2%     -    0s
     0     0   11.71424    0   78    8.00000   11.71424  46.4%     -    0s
     0     0   11.68525    0   78    8.00000   11.68525  46.1%     -    0s
     0     0   11.67995    0   78    8.00000   11.67995  46.0%     -    0s
     0     0   11.67963    0   78    8.00000   11.67963  46.0%     -    0s
     0     0   11.67219    0   78    8.00000   11.67219  45.9%     -    0s
     0     0   11.65488    0   78    8.00000   11.65488  45.7%     -    0s
     0     0   11.62750    0   78    8.00000   11.62750  45.3%     -    0s
     0     0   11.62557    0   78    8.00000   11.62557  45.3%     -    0s
     0     2   11.62478    0   78    8.00000   11.62478  45.3%     -    0s

Cutting planes:
  Clique: 57
  Zero half: 2

Explored 89 nodes (4504 simplex iterations) in 0.67 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 8.000000000000e+00, best bound 8.000000000000e+00, gap 0.0%