DON'T KNOW Prover = TRS(tech=PATTERN_RULES, nb_unfoldings=unlimited, max_nb_unfolded_rules=200) ** 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 = [and^#(not(not(_0)),_1,not(_2)) -> and^#(_1,band(_0,_2),_0)] TRS = {and(not(not(_0)),_1,not(_2)) -> and(_1,band(_0,_2),_0)} ## Trying with homeomorphic embeddings... Failed! ## Trying with polynomial interpretations... Too many coefficients (15)! Aborting! ## Trying with lexicographic path orders... Failed! ## Trying to prove nontermination by unfolding the dependency pairs with the rules of the TRS # Iteration 0: nontermination not detected, 1 unfolded rule generated. # Iteration 1: nontermination not detected, 1 unfolded rule generated. # Iteration 2: nontermination not detected, 0 unfolded rule generated. Nontermination not detected! Don't know whether this DP problem is finite. Could not solve the following DP problems: 1: Dependency pairs = [and^#(not(not(_0)),_1,not(_2)) -> and^#(_1,band(_0,_2),_0)] TRS = {and(not(not(_0)),_1,not(_2)) -> and(_1,band(_0,_2),_0)} Hence, could not prove (non)termination of the TRS under analysis. ** END proof description ** Proof stopped at iteration 2 Number of unfolded rules generated by this proof = 2 Number of unfolded rules generated by all the parallel proofs = 18