(GOAL COMPLEXITY)
(STARTTERM (FUNCTIONSYMBOLS f1))
(VAR A B C D E)
(RULES
  f2(A,B,C,D) -> Com_1(f2(1 + A,1 + B,-1 + C,D))
  f1(A,B,C,D) -> Com_1(f2(A,B,C,D)) :|: A >= C && B >= A && C >= B
  f1(A,B,C,D) -> Com_1(f300(A,B,C,E)) :|: C >= 1 + A && B >= A && C >= B
  f1(A,B,C,D) -> Com_1(f300(A,B,C,E)) :|: B >= A && B >= C + 1
  f1(A,B,C,D) -> Com_1(f300(A,B,C,E)) :|: A >= B + 1
)