(GOAL COMPLEXITY) (STARTTERM (FUNCTIONSYMBOLS f0)) (VAR A B) (RULES f0(A, B) -> Com_1(f1(A, A)) [ A = B ] f1(A, B) -> Com_1(f1(A + 1, B + 1)) [ A - B >= 0 /\ -A + B >= 0 ] f1(A, B) -> Com_1(f2(A, B)) [ A - B >= 0 /\ -A + B >= 0 ] )