Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:45:41 2012

Optimize a model with 1954 rows, 88 columns and 3908 nonzeros
Presolve removed 1374 rows and 0 columns
Presolve time: 0.06s
Presolved: 580 rows, 88 columns, 3918 nonzeros
Variable types: 0 continuous, 88 integer (88 binary)
Found heuristic solution: objective 7.0000000

Root relaxation: objective 1.235160e+01, 349 iterations, 0.01 seconds

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

     0     0   12.35160    0   82    7.00000   12.35160  76.5%     -    0s
H    0     0                       8.0000000   12.35160  54.4%     -    0s
     0     0   12.05923    0   84    8.00000   12.05923  50.7%     -    0s
     0     0   12.00388    0   85    8.00000   12.00388  50.0%     -    0s
     0     0   11.96588    0   86    8.00000   11.96588  49.6%     -    0s
     0     0   11.96115    0   86    8.00000   11.96115  49.5%     -    0s
     0     0   11.95749    0   86    8.00000   11.95749  49.5%     -    0s
     0     0   11.94854    0   86    8.00000   11.94854  49.4%     -    0s
     0     0   11.93169    0   86    8.00000   11.93169  49.1%     -    0s
     0     0   11.91523    0   87    8.00000   11.91523  48.9%     -    0s
     0     0   11.91214    0   87    8.00000   11.91214  48.9%     -    0s
     0     0   11.91213    0   87    8.00000   11.91213  48.9%     -    0s
     0     2   11.91185    0   87    8.00000   11.91185  48.9%     -    0s

Cutting planes:
  Clique: 53
  Zero half: 3

Explored 124 nodes (6976 simplex iterations) in 1.11 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%