9.37/3.26 MAYBE 9.37/3.26 9.37/3.26 Proof: 9.37/3.26 ConCon could not decide confluence of the system. 9.37/3.26 \cite{ALS94}, Theorem 4.1 does not apply. 9.37/3.26 This system is of type 3 or smaller. 9.37/3.26 This system is strongly deterministic. 9.37/3.26 This system is quasi-decreasing. 9.37/3.26 By \cite{O02}, p. 214, Proposition 7.2.50. 9.37/3.26 This system is of type 3 or smaller. 9.37/3.26 This system is deterministic. 9.37/3.26 System R transformed to U(R). 9.37/3.26 This system is terminating. 9.37/3.26 Call external tool: 9.37/3.26 ./ttt2.sh 9.37/3.26 Input: 9.37/3.26 (VAR x) 9.37/3.26 (RULES 9.37/3.26 even(0) -> true 9.37/3.26 ?1(true, x) -> true 9.37/3.26 even(s(x)) -> ?1(odd(x), x) 9.37/3.26 ?2(true, x) -> false 9.37/3.26 even(s(x)) -> ?2(even(x), x) 9.37/3.26 odd(0) -> false 9.37/3.26 ?3(true, x) -> true 9.37/3.26 odd(s(x)) -> ?3(even(x), x) 9.37/3.26 ?4(true, x) -> false 9.37/3.26 odd(s(x)) -> ?4(odd(x), x) 9.37/3.26 ) 9.37/3.26 9.37/3.26 Matrix Interpretation Processor: dim=1 9.37/3.26 9.37/3.26 interpretation: 9.37/3.26 [?4](x0, x1) = 2x0 + 2x1 + 4, 9.37/3.26 9.37/3.26 [?3](x0, x1) = 2x0 + 4x1 + 6, 9.37/3.26 9.37/3.26 [false] = 0, 9.37/3.26 9.37/3.26 [?2](x0, x1) = 2x0 + x1, 9.37/3.26 9.37/3.26 [odd](x0) = 4x0 + 4, 9.37/3.26 9.37/3.26 [s](x0) = 6x0 + 2, 9.37/3.26 9.37/3.26 [?1](x0, x1) = x0 + 2x1 + 2, 9.37/3.26 9.37/3.26 [true] = 6, 9.37/3.26 9.37/3.26 [even](x0) = 2x0 + 3, 9.37/3.26 9.37/3.27 [0] = 2 9.37/3.27 orientation: 9.37/3.27 even(0()) = 7 >= 6 = true() 9.37/3.27 9.37/3.27 ?1(true(),x) = 2x + 8 >= 6 = true() 9.37/3.27 9.37/3.27 even(s(x)) = 12x + 7 >= 6x + 6 = ?1(odd(x),x) 9.37/3.27 9.37/3.27 ?2(true(),x) = x + 12 >= 0 = false() 9.37/3.27 9.37/3.27 even(s(x)) = 12x + 7 >= 5x + 6 = ?2(even(x),x) 9.37/3.27 9.37/3.27 odd(0()) = 12 >= 0 = false() 9.37/3.27 9.37/3.27 ?3(true(),x) = 4x + 18 >= 6 = true() 9.37/3.27 9.37/3.27 odd(s(x)) = 24x + 12 >= 8x + 12 = ?3(even(x),x) 9.37/3.27 9.37/3.27 ?4(true(),x) = 2x + 16 >= 0 = false() 9.37/3.27 9.37/3.27 odd(s(x)) = 24x + 12 >= 10x + 12 = ?4(odd(x),x) 9.37/3.27 problem: 9.37/3.27 odd(s(x)) -> ?3(even(x),x) 9.37/3.27 odd(s(x)) -> ?4(odd(x),x) 9.37/3.27 Matrix Interpretation Processor: dim=3 9.37/3.27 9.37/3.27 interpretation: 9.37/3.27 [1 1 0] [1 0 0] 9.37/3.27 [?4](x0, x1) = [0 0 0]x0 + [0 0 0]x1 9.37/3.27 [0 0 0] [0 0 0] , 9.37/3.27 9.37/3.27 [1 0 1] [1 0 1] 9.37/3.27 [?3](x0, x1) = [0 0 0]x0 + [0 0 0]x1 9.37/3.27 [0 0 0] [0 0 0] , 9.37/3.27 9.37/3.27 [1 0 1] 9.37/3.27 [odd](x0) = [0 1 0]x0 9.37/3.27 [0 0 0] , 9.37/3.27 9.37/3.27 [1 1 0] [1] 9.37/3.27 [s](x0) = [0 0 0]x0 + [0] 9.37/3.27 [1 0 1] [0], 9.37/3.27 9.37/3.27 [1 0 0] [1] 9.37/3.27 [even](x0) = [0 0 0]x0 + [0] 9.37/3.27 [0 1 0] [0] 9.37/3.27 orientation: 9.37/3.27 [2 1 1] [1] [2 1 1] [1] 9.37/3.27 odd(s(x)) = [0 0 0]x + [0] >= [0 0 0]x + [0] = ?3(even(x),x) 9.37/3.27 [0 0 0] [0] [0 0 0] [0] 9.37/3.27 9.37/3.27 [2 1 1] [1] [2 1 1] 9.37/3.27 odd(s(x)) = [0 0 0]x + [0] >= [0 0 0]x = ?4(odd(x),x) 9.37/3.27 [0 0 0] [0] [0 0 0] 9.37/3.27 problem: 9.37/3.27 odd(s(x)) -> ?3(even(x),x) 9.37/3.27 Matrix Interpretation Processor: dim=3 9.37/3.27 9.37/3.27 interpretation: 9.37/3.27 [1 1 0] [1 0 0] 9.37/3.27 [?3](x0, x1) = [0 0 0]x0 + [0 0 0]x1 9.37/3.27 [0 0 0] [0 0 0] , 9.37/3.27 9.37/3.27 [1 1 1] [1] 9.37/3.27 [odd](x0) = [0 0 0]x0 + [0] 9.37/3.27 [0 0 0] [0], 9.37/3.27 9.37/3.27 [1 0 0] 9.37/3.27 [s](x0) = [1 0 0]x0 9.37/3.27 [1 0 0] , 9.37/3.27 9.37/3.27 [1 0 0] 9.37/3.27 [even](x0) = [1 0 0]x0 9.37/3.27 [0 0 0] 9.37/3.27 orientation: 9.37/3.27 [3 0 0] [1] [3 0 0] 9.37/3.27 odd(s(x)) = [0 0 0]x + [0] >= [0 0 0]x = ?3(even(x),x) 9.37/3.27 [0 0 0] [0] [0 0 0] 9.37/3.27 problem: 9.37/3.27 9.37/3.27 Qed 9.37/3.27 This critical pair is conditional. 9.37/3.27 This critical pair has some non-trivial conditions. 9.37/3.27 ConCon could not decide whether all 4 critical pairs are joinable or not. 9.37/3.27 Overlap: (rule1: even(s(y)) -> false <= even(y) = true, rule2: even(s(z)) -> true <= odd(z) = true, pos: ε, mgu: {(y,z)}) 9.37/3.27 CP: true = false <= even(z) = true, odd(z) = true 9.37/3.27 ConCon could not decide infeasibility of this critical pair. 9.37/3.27 9.37/3.31 EOF