Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:11:25 2012

Optimize a model with 149 rows, 124 columns and 494 nonzeros
Presolve time: 0.00s
Presolved: 149 rows, 124 columns, 494 nonzeros
Variable types: 0 continuous, 124 integer (124 binary)
Found heuristic solution: objective 26.0000000

Root relaxation: objective 0.000000e+00, 67 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   50   26.00000    0.00000   100%     -    0s
H    0     0                      20.0000000    0.00000   100%     -    0s
     0     0    0.56818    0   51   20.00000    0.56818  97.2%     -    0s
     0     0    1.00000    0   53   20.00000    1.00000  95.0%     -    0s
     0     0    1.00000    0   54   20.00000    1.00000  95.0%     -    0s
     0     0    1.00000    0   50   20.00000    1.00000  95.0%     -    0s
H    0     0                      14.0000000    1.00000  92.9%     -    0s
     0     2    1.00000    0   50   14.00000    1.00000  92.9%     -    0s
*   21    19              15      11.0000000    2.24759  79.6%  26.4    0s
*   45    19              19       9.0000000    2.97619  66.9%  18.2    0s
*   61    11               8       8.0000000    3.89292  51.3%  16.4    0s

Cutting planes:
  Gomory: 3
  Zero half: 2

Explored 79 nodes (1690 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%