YES Prover = TRS(tech=PATTERN_RULES, nb_unfoldings=unlimited, max_nb_unfolded_rules=200) ** BEGIN proof argument ** All the DP problems were proved finite. As all the involved DP processors are sound, the TRS under analysis terminates. ** END proof argument ** ** BEGIN proof description ** ## Searching for a generalized rewrite rule (a rule whose right-hand side contains a variable that does not occur in the left-hand side)... No generalized rewrite rule found! ## Applying the DP framework... ## Round 1: ## DP problem: Dependency pairs = [f^#(_0,c(_1)) -> f^#(_1,_1)] TRS = {f(_0,c(_1)) -> f(_0,s(f(_1,_1))), f(s(_0),_1) -> f(_0,s(c(_1)))} ## Trying with homeomorphic embeddings... Failed! ## Trying with polynomial interpretations... Failed! ## Trying with lexicographic path orders... The constraints are satisfied by the lexicographic path order using the precedence: s > [f], c > [f] and the argument filtering: {f:[0], s:[0], c:[0], f^#:[0, 1]} This DP problem is finite. ## DP problem: Dependency pairs = [f^#(s(_0),_1) -> f^#(_0,s(c(_1)))] TRS = {f(_0,c(_1)) -> f(_0,s(f(_1,_1))), f(s(_0),_1) -> f(_0,s(c(_1)))} ## Trying with homeomorphic embeddings... Failed! ## Trying with polynomial interpretations... Failed! ## Trying with lexicographic path orders... The constraints are satisfied by the lexicographic path order using the precedence: f > [s, f, c], s > [f] and the argument filtering: {f:[0], s:[0], c:[0], f^#:[0, 1]} This DP problem is finite. ** END proof description ** Proof stopped at iteration 0 Number of unfolded rules generated by this proof = 0 Number of unfolded rules generated by all the parallel proofs = 99