The mutation score is 71.43% (10 killed, 0 escaped, 0 errored, 4 not covered, 0 skipped, 14 total)
The covered-code mutation score is 100.00%

Per-mutator breakdown:
  arithmetic/base                      killed   2 / 2    (100%)
  branch/if                            killed   1 / 1    (100%)
  conditional/negated                  killed   1 / 1    (100%)
  expression/comparison                killed   1 / 1    (100%)
  numbers/decrementer                  killed   1 / 1    (100%)
  numbers/incrementer                  killed   1 / 1    (100%)
  statement/return                     killed   3 / 3    (100%)