2.65/1.26 NO 2.65/1.27 proof of /export/starexec/sandbox/benchmark/theBenchmark.xml 2.65/1.27 # AProVE Commit ID: 48fb2092695e11cc9f56e44b17a92a5f88ffb256 marcel 20180622 unpublished dirty 2.65/1.27 2.65/1.27 2.65/1.27 Outermost Termination of the given OTRS could be disproven: 2.65/1.27 2.65/1.27 (0) OTRS 2.65/1.27 (1) OutermostNonTerminationProof [COMPLETE, 0 ms] 2.65/1.27 (2) NO 2.65/1.27 2.65/1.27 2.65/1.27 ---------------------------------------- 2.65/1.27 2.65/1.27 (0) 2.65/1.27 Obligation: 2.65/1.27 Term rewrite system R: 2.65/1.27 The TRS R consists of the following rules: 2.65/1.27 2.65/1.27 f(h(x), y) -> h(f(y, f(x, h(a)))) 2.65/1.27 2.65/1.27 2.65/1.27 2.65/1.27 Outermost Strategy. 2.65/1.27 2.65/1.27 ---------------------------------------- 2.65/1.27 2.65/1.27 (1) OutermostNonTerminationProof (COMPLETE) 2.65/1.27 Term rewrite system R: 2.65/1.27 The TRS R consists of the following rules: 2.65/1.27 2.65/1.27 f(h(x), y) -> h(f(y, f(x, h(a)))) 2.65/1.27 2.65/1.27 2.65/1.27 2.65/1.27 Outermost Strategy. 2.65/1.27 2.65/1.27 ---------- Loop: ---------- 2.65/1.27 2.65/1.27 f(f(f(h(x), y''), h(x'')), f(f(h(x'), y'''), h(x'''))) -> f(f(h(f(y'', f(x, h(a)))), h(x'')), f(f(h(x'), y'''), h(x'''))) with rule f(h(x1), y'''') -> h(f(y'''', f(x1, h(a)))) at position [0,0] and matcher [x1 / x, y'''' / y''] 2.65/1.27 2.65/1.27 f(f(h(f(y'', f(x, h(a)))), h(x'')), f(f(h(x'), y'''), h(x'''))) -> f(h(f(h(x''), f(f(y'', f(x, h(a))), h(a)))), f(f(h(x'), y'''), h(x'''))) with rule f(h(x'1), y') -> h(f(y', f(x'1, h(a)))) at position [0] and matcher [x'1 / f(y'', f(x, h(a))), y' / h(x'')] 2.65/1.27 2.65/1.27 f(h(f(h(x''), f(f(y'', f(x, h(a))), h(a)))), f(f(h(x'), y'''), h(x'''))) -> h(f(f(f(h(x'), y'''), h(x''')), f(f(h(x''), f(f(y'', f(x, h(a))), h(a))), h(a)))) with rule f(h(x1), y) -> h(f(y, f(x1, h(a)))) at position [] and matcher [x1 / f(h(x''), f(f(y'', f(x, h(a))), h(a))), y / f(f(h(x'), y'''), h(x'''))] 2.65/1.27 2.65/1.27 Now an instance of the first term with Matcher [y'' / y''', x / x', x' / x'', x'' / x''', y''' / f(f(y'', f(x, h(a))), h(a)), x''' / a] occurs in the last term at position [0]. 2.65/1.27 2.65/1.27 Context: h([]) 2.65/1.27 2.65/1.27 We used [THIEMANN_LOOPS_UNDER_STRATEGIES] to show that this Loop is an Outermost-Loop. 2.65/1.27 ---------------------------------------- 2.65/1.27 2.65/1.27 (2) 2.65/1.27 NO 2.65/1.31 EOF