YES proof of prog.inttrs # AProVE Commit ID: 48fb2092695e11cc9f56e44b17a92a5f88ffb256 marcel 20180622 unpublished dirty Termination of the given IRSwT could be proven: (0) IRSwT (1) IRSFormatTransformerProof [EQUIVALENT, 0 ms] (2) IRSwT (3) IRSwTTerminationDigraphProof [EQUIVALENT, 75 ms] (4) IRSwT (5) IntTRSCompressionProof [EQUIVALENT, 24 ms] (6) IRSwT (7) TempFilterProof [SOUND, 16 ms] (8) IntTRS (9) PolynomialOrderProcessor [EQUIVALENT, 0 ms] (10) YES ---------------------------------------- (0) Obligation: Rules: l0(__const_200HAT0, xHAT0) -> l1(__const_200HATpost, xHATpost) :|: __const_200HAT0 = __const_200HATpost && 1 + __const_200HAT0 <= xHATpost && xHATpost = -1 + xHAT0 l1(x, x1) -> l0(x2, x3) :|: x1 = x3 && x = x2 l2(x4, x5) -> l0(x6, x7) :|: x5 = x7 && x4 = x6 l3(x8, x9) -> l2(x10, x11) :|: x9 = x11 && x8 = x10 Start term: l3(__const_200HAT0, xHAT0) ---------------------------------------- (1) IRSFormatTransformerProof (EQUIVALENT) Reformatted IRS to match normalized format (transformed away non-linear left-hand sides, !=, / and %). ---------------------------------------- (2) Obligation: Rules: l0(__const_200HAT0, xHAT0) -> l1(__const_200HATpost, xHATpost) :|: __const_200HAT0 = __const_200HATpost && 1 + __const_200HAT0 <= xHATpost && xHATpost = -1 + xHAT0 l1(x, x1) -> l0(x2, x3) :|: x1 = x3 && x = x2 l2(x4, x5) -> l0(x6, x7) :|: x5 = x7 && x4 = x6 l3(x8, x9) -> l2(x10, x11) :|: x9 = x11 && x8 = x10 Start term: l3(__const_200HAT0, xHAT0) ---------------------------------------- (3) IRSwTTerminationDigraphProof (EQUIVALENT) Constructed termination digraph! Nodes: (1) l0(__const_200HAT0, xHAT0) -> l1(__const_200HATpost, xHATpost) :|: __const_200HAT0 = __const_200HATpost && 1 + __const_200HAT0 <= xHATpost && xHATpost = -1 + xHAT0 (2) l1(x, x1) -> l0(x2, x3) :|: x1 = x3 && x = x2 (3) l2(x4, x5) -> l0(x6, x7) :|: x5 = x7 && x4 = x6 (4) l3(x8, x9) -> l2(x10, x11) :|: x9 = x11 && x8 = x10 Arcs: (1) -> (2) (2) -> (1) (3) -> (1) (4) -> (3) This digraph is fully evaluated! ---------------------------------------- (4) Obligation: Termination digraph: Nodes: (1) l0(__const_200HAT0, xHAT0) -> l1(__const_200HATpost, xHATpost) :|: __const_200HAT0 = __const_200HATpost && 1 + __const_200HAT0 <= xHATpost && xHATpost = -1 + xHAT0 (2) l1(x, x1) -> l0(x2, x3) :|: x1 = x3 && x = x2 Arcs: (1) -> (2) (2) -> (1) This digraph is fully evaluated! ---------------------------------------- (5) IntTRSCompressionProof (EQUIVALENT) Compressed rules. ---------------------------------------- (6) Obligation: Rules: l0(__const_200HAT0:0, xHAT0:0) -> l0(__const_200HAT0:0, -1 + xHAT0:0) :|: 1 + __const_200HAT0:0 <= -1 + xHAT0:0 ---------------------------------------- (7) TempFilterProof (SOUND) Used the following sort dictionary for filtering: l0(INTEGER, INTEGER) Replaced non-predefined constructor symbols by 0. ---------------------------------------- (8) Obligation: Rules: l0(__const_200HAT0:0, xHAT0:0) -> l0(__const_200HAT0:0, c) :|: c = -1 + xHAT0:0 && 1 + __const_200HAT0:0 <= -1 + xHAT0:0 ---------------------------------------- (9) PolynomialOrderProcessor (EQUIVALENT) Found the following polynomial interpretation: [l0(x, x1)] = -x + x1 The following rules are decreasing: l0(__const_200HAT0:0, xHAT0:0) -> l0(__const_200HAT0:0, c) :|: c = -1 + xHAT0:0 && 1 + __const_200HAT0:0 <= -1 + xHAT0:0 The following rules are bounded: l0(__const_200HAT0:0, xHAT0:0) -> l0(__const_200HAT0:0, c) :|: c = -1 + xHAT0:0 && 1 + __const_200HAT0:0 <= -1 + xHAT0:0 ---------------------------------------- (10) YES