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 = [mod^#(s(_0),s(_1)) -> if_mod^#(le(_1,_0),s(_0),s(_1)), if_mod^#(true,s(_0),s(_1)) -> mod^#(minus(_0,_1),s(_1))] TRS = {le(0,_0) -> true, le(s(_0),0) -> false, le(s(_0),s(_1)) -> le(_0,_1), minus(_0,0) -> _0, minus(s(_0),s(_1)) -> minus(_0,_1), mod(0,_0) -> 0, mod(s(_0),0) -> 0, mod(s(_0),s(_1)) -> if_mod(le(_1,_0),s(_0),s(_1)), if_mod(true,s(_0),s(_1)) -> mod(minus(_0,_1),s(_1)), if_mod(false,s(_0),s(_1)) -> s(_0)} ## Trying with homeomorphic embeddings... Failed! ## Trying with polynomial interpretations... Too many coefficients (26)! Aborting! ## Trying with lexicographic path orders... The constraints are satisfied by the lexicographic path order using the precedence: mod > [if_mod], mod > [le, if_mod], 0 > [true], s > [mod, if_mod, false, true, 0, minus] and the argument filtering: {le:[0, 1], mod:[0], if_mod:[1], s:[0], minus:[0], if_mod^#:[1], mod^#:[0]} This DP problem is finite. ## DP problem: Dependency pairs = [minus^#(s(_0),s(_1)) -> minus^#(_0,_1)] TRS = {le(0,_0) -> true, le(s(_0),0) -> false, le(s(_0),s(_1)) -> le(_0,_1), minus(_0,0) -> _0, minus(s(_0),s(_1)) -> minus(_0,_1), mod(0,_0) -> 0, mod(s(_0),0) -> 0, mod(s(_0),s(_1)) -> if_mod(le(_1,_0),s(_0),s(_1)), if_mod(true,s(_0),s(_1)) -> mod(minus(_0,_1),s(_1)), if_mod(false,s(_0),s(_1)) -> s(_0)} ## Trying with homeomorphic embeddings... Success! This DP problem is finite. ## DP problem: Dependency pairs = [le^#(s(_0),s(_1)) -> le^#(_0,_1)] TRS = {le(0,_0) -> true, le(s(_0),0) -> false, le(s(_0),s(_1)) -> le(_0,_1), minus(_0,0) -> _0, minus(s(_0),s(_1)) -> minus(_0,_1), mod(0,_0) -> 0, mod(s(_0),0) -> 0, mod(s(_0),s(_1)) -> if_mod(le(_1,_0),s(_0),s(_1)), if_mod(true,s(_0),s(_1)) -> mod(minus(_0,_1),s(_1)), if_mod(false,s(_0),s(_1)) -> s(_0)} ## 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 = 16