(GOAL COMPLEXITY)
(STARTTERM (FUNCTIONSYMBOLS start))
(VAR A B)
(RULES
  start(A, B) -> Com_1(merge(A, B))
  merge(A, B) -> Com_1(merge(A, B - 1)) [ A >= 1 /\ B >= 1 ]
  merge(A, B) -> Com_1(merge(A - 1, B)) [ A >= 1 /\ B >= 1 ]
)