Gurobi 5.0.1 (linux64) logging started Sat Nov 17 19:52:42 2012

Optimize a model with 91 rows, 61 columns and 286 nonzeros
Presolve time: 0.00s
Presolved: 91 rows, 61 columns, 286 nonzeros
Variable types: 0 continuous, 61 integer (61 binary)
Found heuristic solution: objective 23.0000000
Found heuristic solution: objective 22.0000000

Root relaxation: objective 0.000000e+00, 24 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   16   22.00000    0.00000   100%     -    0s
     0     0    0.87500    0   18   22.00000    0.87500  96.0%     -    0s
H    0     0                      21.0000000    0.87500  95.8%     -    0s
H    0     0                      20.0000000    0.87500  95.6%     -    0s
H    0     0                      15.0000000    0.87500  94.2%     -    0s
     0     0    0.91589    0   23   15.00000    0.91589  93.9%     -    0s
     0     0    0.97197    0   25   15.00000    0.97197  93.5%     -    0s
     0     0    1.07817    0   35   15.00000    1.07817  92.8%     -    0s
     0     0    1.18767    0   41   15.00000    1.18767  92.1%     -    0s
     0     0    1.46261    0   39   15.00000    1.46261  90.2%     -    0s
     0     0    1.49927    0   46   15.00000    1.49927  90.0%     -    0s
     0     0    1.50544    0   49   15.00000    1.50544  90.0%     -    0s
     0     2    1.57187    0   49   15.00000    1.57187  89.5%     -    0s

Cutting planes:
  Gomory: 1
  Mod-K: 13

Explored 77 nodes (919 simplex iterations) in 0.03 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%