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

Optimize a model with 147 rows, 111 columns and 476 nonzeros
Presolve time: 0.00s
Presolved: 147 rows, 111 columns, 476 nonzeros
Variable types: 0 continuous, 111 integer (111 binary)
Found heuristic solution: objective 31.0000000
Found heuristic solution: objective 30.0000000

Root relaxation: objective 0.000000e+00, 56 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   37   30.00000    0.00000   100%     -    0s
H    0     0                      27.0000000    0.00000   100%     -    0s
H    0     0                      24.0000000    0.00000   100%     -    0s
     0     0    0.35301    0   41   24.00000    0.35301  98.5%     -    0s
H    0     0                      23.0000000    0.35301  98.5%     -    0s
     0     0    0.41463    0   41   23.00000    0.41463  98.2%     -    0s
H    0     0                      21.0000000    0.41463  98.0%     -    0s
H    0     0                      20.0000000    0.41463  97.9%     -    0s
     0     2    0.49869    0   41   20.00000    0.49869  97.5%     -    0s
*   20    19              14      18.0000000    3.28926  81.7%  20.3    0s
*   33    21               9      16.0000000    3.37102  78.9%  22.0    0s
*   49    14               7      15.0000000    7.81818  47.9%  18.5    0s
*   62     8               6      14.0000000   10.18750  27.2%  18.9    0s

Cutting planes:
  Gomory: 1
  Zero half: 1
  Mod-K: 1

Explored 73 nodes (1622 simplex iterations) in 0.07 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.400000000000e+01, best bound 1.400000000000e+01, gap 0.0%