Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:44:03 2012

Optimize a model with 1296 rows, 73 columns and 2592 nonzeros
Presolve removed 884 rows and 0 columns
Presolve time: 0.02s
Presolved: 412 rows, 73 columns, 2542 nonzeros
Variable types: 0 continuous, 73 integer (73 binary)
Found heuristic solution: objective 6.0000000

Root relaxation: objective 1.172949e+01, 262 iterations, 0.01 seconds

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

     0     0   11.72949    0   67    6.00000   11.72949  95.5%     -    0s
     0     0   11.44710    0   71    6.00000   11.44710  90.8%     -    0s
H    0     0                       7.0000000   11.44710  63.5%     -    0s
     0     0   11.35723    0   72    7.00000   11.35723  62.2%     -    0s
     0     0   11.31900    0   72    7.00000   11.31900  61.7%     -    0s
     0     0   11.31731    0   73    7.00000   11.31731  61.7%     -    0s
H    0     0                       8.0000000   11.31731  41.5%     -    0s
     0     0   11.31727    0   72    8.00000   11.31727  41.5%     -    0s
     0     0   11.30786    0   73    8.00000   11.30786  41.3%     -    0s
     0     0   11.29918    0   73    8.00000   11.29918  41.2%     -    0s
     0     0   11.29565    0   73    8.00000   11.29565  41.2%     -    0s
     0     0   11.29528    0   73    8.00000   11.29528  41.2%     -    0s
     0     2   11.29200    0   73    8.00000   11.29200  41.2%     -    0s

Cutting planes:
  Clique: 50
  Zero half: 3

Explored 62 nodes (3061 simplex iterations) in 0.47 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%