Gurobi 5.0.1 (linux64) logging started Sat Nov 17 19:52:12 2012

Optimize a model with 53 rows, 36 columns and 166 nonzeros
Presolve time: 0.00s
Presolved: 53 rows, 36 columns, 166 nonzeros
Variable types: 0 continuous, 36 integer (36 binary)
Found heuristic solution: objective 15.0000000
Found heuristic solution: objective 13.0000000

Root relaxation: objective 0.000000e+00, 15 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   10   13.00000    0.00000   100%     -    0s
     0     0    0.70000    0   12   13.00000    0.70000  94.6%     -    0s
     0     0    0.90000    0   12   13.00000    0.90000  93.1%     -    0s
     0     0    1.00000    0   12   13.00000    1.00000  92.3%     -    0s
     0     0    1.05000    0   14   13.00000    1.05000  91.9%     -    0s
     0     0    1.20000    0   13   13.00000    1.20000  90.8%     -    0s
     0     0    1.20000    0   13   13.00000    1.20000  90.8%     -    0s
     0     0    1.20000    0   13   13.00000    1.20000  90.8%     -    0s
H    0     0                      12.0000000    1.20000  90.0%     -    0s
H    0     0                      11.0000000    1.20000  89.1%     -    0s
     0     2    1.20000    0   13   11.00000    1.20000  89.1%     -    0s
*   10     6               4       9.0000000    4.00000  55.6%  12.1    0s
*   20     3               4       8.0000000    6.00000  25.0%   8.9    0s

Cutting planes:
  Gomory: 1
  Zero half: 6

Explored 24 nodes (271 simplex iterations) in 0.01 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%