Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:44:00 2012

Optimize a model with 1319 rows, 72 columns and 2638 nonzeros
Presolve removed 914 rows and 0 columns
Presolve time: 0.03s
Presolved: 405 rows, 72 columns, 2572 nonzeros
Variable types: 0 continuous, 72 integer (72 binary)
Found heuristic solution: objective 5.0000000

Root relaxation: objective 1.101080e+01, 224 iterations, 0.01 seconds

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

     0     0   11.01080    0   67    5.00000   11.01080   120%     -    0s
H    0     0                       6.0000000   11.01080  83.5%     -    0s
H    0     0                       7.0000000   11.01080  57.3%     -    0s
     0     0   10.68365    0   71    7.00000   10.68365  52.6%     -    0s
     0     0   10.64295    0   70    7.00000   10.64295  52.0%     -    0s
H    0     0                       8.0000000   10.64295  33.0%     -    0s
     0     0   10.61535    0   70    8.00000   10.61535  32.7%     -    0s
     0     0   10.60393    0   70    8.00000   10.60393  32.5%     -    0s
     0     0   10.58026    0   70    8.00000   10.58026  32.3%     -    0s
     0     0   10.57068    0   70    8.00000   10.57068  32.1%     -    0s
     0     0   10.56783    0   72    8.00000   10.56783  32.1%     -    0s
     0     0   10.56625    0   71    8.00000   10.56625  32.1%     -    0s
     0     0   10.56571    0   71    8.00000   10.56571  32.1%     -    0s
     0     0   10.56493    0   72    8.00000   10.56493  32.1%     -    0s
     0     2   10.56249    0   72    8.00000   10.56249  32.0%     -    0s

Cutting planes:
  Clique: 34
  Zero half: 4

Explored 25 nodes (1685 simplex iterations) in 0.41 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%