Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:44:27 2012

Optimize a model with 1534 rows, 78 columns and 3068 nonzeros
Presolve removed 1108 rows and 0 columns
Presolve time: 0.03s
Presolved: 426 rows, 78 columns, 2769 nonzeros
Variable types: 0 continuous, 78 integer (78 binary)
Found heuristic solution: objective 7.0000000

Root relaxation: objective 1.184267e+01, 240 iterations, 0.01 seconds

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

     0     0   11.84267    0   71    7.00000   11.84267  69.2%     -    0s
H    0     0                       8.0000000   11.84267  48.0%     -    0s
     0     0   11.59386    0   72    8.00000   11.59386  44.9%     -    0s
     0     0   11.53129    0   73    8.00000   11.53129  44.1%     -    0s
     0     0   11.48481    0   76    8.00000   11.48481  43.6%     -    0s
     0     0   11.48352    0   76    8.00000   11.48352  43.5%     -    0s
     0     0   11.48032    0   77    8.00000   11.48032  43.5%     -    0s
     0     0   11.47804    0   76    8.00000   11.47804  43.5%     -    0s
     0     0   11.46357    0   74    8.00000   11.46357  43.3%     -    0s
     0     0   11.45685    0   75    8.00000   11.45685  43.2%     -    0s
     0     0   11.45675    0   78    8.00000   11.45675  43.2%     -    0s
     0     0   11.45667    0   77    8.00000   11.45667  43.2%     -    0s
     0     0   11.45659    0   78    8.00000   11.45659  43.2%     -    0s
     0     2   11.45615    0   78    8.00000   11.45615  43.2%     -    0s

Cutting planes:
  Gomory: 1
  Clique: 47
  Zero half: 2

Explored 65 nodes (3547 simplex iterations) in 0.61 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%