Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:23 2012

Optimize a model with 750 rows, 56 columns and 1500 nonzeros
Presolve removed 516 rows and 0 columns
Presolve time: 0.01s
Presolved: 234 rows, 56 columns, 1349 nonzeros
Variable types: 0 continuous, 56 integer (56 binary)
Found heuristic solution: objective 5.0000000

Root relaxation: objective 9.955674e+00, 138 iterations, 0.00 seconds

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

     0     0    9.95567    0   46    5.00000    9.95567  99.1%     -    0s
H    0     0                       6.0000000    9.95567  65.9%     -    0s
H    0     0                       7.0000000    9.95567  42.2%     -    0s
     0     0    9.64577    0   49    7.00000    9.64577  37.8%     -    0s
     0     0    9.62322    0   50    7.00000    9.62322  37.5%     -    0s
     0     0    9.58097    0   50    7.00000    9.58097  36.9%     -    0s
     0     0    9.55752    0   51    7.00000    9.55752  36.5%     -    0s
     0     0    9.52826    0   48    7.00000    9.52826  36.1%     -    0s
     0     0    9.51641    0   47    7.00000    9.51641  35.9%     -    0s
H    0     0                       8.0000000    9.51641  19.0%     -    0s
     0     0    9.49316    0   49    8.00000    9.49316  18.7%     -    0s
     0     0    9.46051    0   49    8.00000    9.46051  18.3%     -    0s
     0     0    9.44900    0   49    8.00000    9.44900  18.1%     -    0s
     0     0    9.44613    0   49    8.00000    9.44613  18.1%     -    0s
     0     0    9.44493    0   49    8.00000    9.44493  18.1%     -    0s
     0     2    9.44230    0   49    8.00000    9.44230  18.0%     -    0s

Cutting planes:
  Clique: 21
  Zero half: 7

Explored 5 nodes (534 simplex iterations) in 0.11 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%