Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:10:39 2012

Optimize a model with 137 rows, 113 columns and 453 nonzeros
Presolve removed 0 rows and 1 columns
Presolve time: 0.00s
Presolved: 137 rows, 112 columns, 452 nonzeros
Variable types: 0 continuous, 112 integer (111 binary)
Found heuristic solution: objective 30.0000000

Root relaxation: objective 0.000000e+00, 77 iterations, 0.00 seconds

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

     0     0    0.00000    0   43   30.00000    0.00000   100%     -    0s
H    0     0                      23.0000000    0.00000   100%     -    0s
H    0     0                      20.0000000    0.00000   100%     -    0s
     0     0    0.48837    0   44   20.00000    0.48837  97.6%     -    0s
H    0     0                      18.0000000    0.48837  97.3%     -    0s
     0     0    1.25192    0   45   18.00000    1.25192  93.0%     -    0s
H    0     0                      14.0000000    1.25192  91.1%     -    0s
     0     0    1.37707    0   47   14.00000    1.37707  90.2%     -    0s
     0     0    1.38041    0   48   14.00000    1.38041  90.1%     -    0s
     0     0    1.38041    0   48   14.00000    1.38041  90.1%     -    0s
H    0     0                      12.0000000    1.38041  88.5%     -    0s
     0     2    1.39702    0   48   12.00000    1.39702  88.4%     -    0s
*   22    10              19      10.0000000    4.54308  54.6%  13.5    0s
*   31     7               7       9.0000000    4.78571  46.8%  12.8    0s
*   40     4               5       8.0000000    6.04317  24.5%  12.3    0s

Cutting planes:
  Gomory: 4
  Mod-K: 1

Explored 47 nodes (955 simplex iterations) in 0.08 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%