(GOAL COMPLEXITY)
(STARTTERM (FUNCTIONSYMBOLS f0))
(VAR A B C D)
(RULES
  f0(A, B, C, D) -> Com_1(f4(0, B, C, D))
  f4(A, B, C, D) -> Com_1(f7(A, B, A + 1, D)) [ A >= 0 /\ B >= A + 1 ]
  f7(A, B, C, D) -> Com_1(f7(A, B, C + 1, 0)) [ B - C >= 0 /\ C - 1 >= 0 /\ B + C - 2 >= 0 /\ A + C - 1 >= 0 /\ -A + C - 1 >= 0 /\ B - 1 >= 0 /\ A + B - 1 >= 0 /\ -A + B - 1 >= 0 /\ A >= 0 /\ B >= C + 1 ]
  f7(A, B, C, D) -> Com_1(f7(A, B - 1, C, E)) [ B - C >= 0 /\ C - 1 >= 0 /\ B + C - 2 >= 0 /\ A + C - 1 >= 0 /\ -A + C - 1 >= 0 /\ B - 1 >= 0 /\ A + B - 1 >= 0 /\ -A + B - 1 >= 0 /\ A >= 0 /\ B >= C + 1 /\ 0 >= E + 1 ]
  f7(A, B, C, D) -> Com_1(f7(A, B - 1, C, E)) [ B - C >= 0 /\ C - 1 >= 0 /\ B + C - 2 >= 0 /\ A + C - 1 >= 0 /\ -A + C - 1 >= 0 /\ B - 1 >= 0 /\ A + B - 1 >= 0 /\ -A + B - 1 >= 0 /\ A >= 0 /\ B >= C + 1 /\ E >= 1 ]
  f7(A, B, C, D) -> Com_1(f4(A + 1, B, C, D)) [ B - C >= 0 /\ C - 1 >= 0 /\ B + C - 2 >= 0 /\ A + C - 1 >= 0 /\ -A + C - 1 >= 0 /\ B - 1 >= 0 /\ A + B - 1 >= 0 /\ -A + B - 1 >= 0 /\ A >= 0 /\ C >= B ]
  f4(A, B, C, D) -> Com_1(f19(A, B, C, D)) [ A >= 0 /\ A >= B ]
)