Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:39:48 2012

Optimize a model with 161 rows, 118 columns and 518 nonzeros
Presolve time: 0.00s
Presolved: 161 rows, 118 columns, 518 nonzeros
Variable types: 0 continuous, 118 integer (118 binary)
Found heuristic solution: objective 38.0000000

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   38   38.00000    0.00000   100%     -    0s
H    0     0                      28.0000000    0.00000   100%     -    0s
H    0     0                      26.0000000    0.00000   100%     -    0s
     0     0    0.61765    0   41   26.00000    0.61765  97.6%     -    0s
H    0     0                      24.0000000    0.61765  97.4%     -    0s
     0     0    0.68627    0   41   24.00000    0.68627  97.1%     -    0s
     0     0    0.69935    0   41   24.00000    0.69935  97.1%     -    0s
H    0     0                      23.0000000    0.69935  97.0%     -    0s
     0     0    0.69935    0   41   23.00000    0.69935  97.0%     -    0s
     0     0    0.69935    0   41   23.00000    0.69935  97.0%     -    0s
H    0     0                      19.0000000    0.69935  96.3%     -    0s
H    0     0                      18.0000000    0.69935  96.1%     -    0s
     0     2    0.72754    0   41   18.00000    0.72754  96.0%     -    0s
*    9     9               6      15.0000000    3.37126  77.5%  41.3    0s

Cutting planes:
  Gomory: 1
  Zero half: 4

Explored 72 nodes (1674 simplex iterations) in 0.08 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.500000000000e+01, best bound 1.500000000000e+01, gap 0.0%