YES Prover = TRS(tech=GUIDED_UNF_TRIPLES, nb_unfoldings=unlimited, unfold_variables=false, max_nb_coefficients=12, max_nb_unfolded_rules=-1, strategy=LEFTMOST_NE) ** 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 = [purge^#(.(_0,_1)) -> purge^#(remove(_0,_1))] TRS = {purge(nil) -> nil, purge(.(_0,_1)) -> .(_0,purge(remove(_0,_1))), remove(_0,nil) -> nil, remove(_0,.(_1,_2)) -> if(=(_0,_1),remove(_0,_2),.(_1,remove(_0,_2)))} ## Trying with homeomorphic embeddings... Failed! ## Trying with polynomial interpretations... Too many coefficients (24)! Aborting! ## Trying with lexicographic path orders... The constraints are satisfied by the lexicographic path order using the precedence: purge > [., =, nil, if, remove], . > [=, nil, if, remove], remove > [=, nil, if] and the argument filtering: {purge:[0], .:[0, 1], if:[0], =:[0], remove:[0], purge^#:[0]} This DP problem is finite. ## DP problem: Dependency pairs = [remove^#(_0,.(_1,_2)) -> remove^#(_0,_2), remove^#(_0,.(_1,_2)) -> remove^#(_0,_2)] TRS = {purge(nil) -> nil, purge(.(_0,_1)) -> .(_0,purge(remove(_0,_1))), remove(_0,nil) -> nil, remove(_0,.(_1,_2)) -> if(=(_0,_1),remove(_0,_2),.(_1,remove(_0,_2)))} ## Trying with homeomorphic embeddings... Success! 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 = 27