3.71/1.91 YES 3.85/1.92 proof of /export/starexec/sandbox2/benchmark/theBenchmark.itrs 3.85/1.92 # AProVE Commit ID: 48fb2092695e11cc9f56e44b17a92a5f88ffb256 marcel 20180622 unpublished dirty 3.85/1.92 3.85/1.92 3.85/1.92 Termination of the given ITRS could be proven: 3.85/1.92 3.85/1.92 (0) ITRS 3.85/1.92 (1) ITRStoIDPProof [EQUIVALENT, 0 ms] 3.85/1.92 (2) IDP 3.85/1.92 (3) UsableRulesProof [EQUIVALENT, 0 ms] 3.85/1.92 (4) IDP 3.85/1.92 (5) IDPNonInfProof [SOUND, 159 ms] 3.85/1.92 (6) IDP 3.85/1.92 (7) IDependencyGraphProof [EQUIVALENT, 0 ms] 3.85/1.92 (8) TRUE 3.85/1.92 3.85/1.92 3.85/1.92 ---------------------------------------- 3.85/1.92 3.85/1.92 (0) 3.85/1.92 Obligation: 3.85/1.92 ITRS problem: 3.85/1.92 3.85/1.92 The following function symbols are pre-defined: 3.85/1.92 <<< 3.85/1.92 & ~ Bwand: (Integer, Integer) -> Integer 3.85/1.92 >= ~ Ge: (Integer, Integer) -> Boolean 3.85/1.92 | ~ Bwor: (Integer, Integer) -> Integer 3.85/1.92 / ~ Div: (Integer, Integer) -> Integer 3.85/1.92 != ~ Neq: (Integer, Integer) -> Boolean 3.85/1.92 && ~ Land: (Boolean, Boolean) -> Boolean 3.85/1.92 ! ~ Lnot: (Boolean) -> Boolean 3.85/1.92 = ~ Eq: (Integer, Integer) -> Boolean 3.85/1.92 <= ~ Le: (Integer, Integer) -> Boolean 3.85/1.92 ^ ~ Bwxor: (Integer, Integer) -> Integer 3.85/1.92 % ~ Mod: (Integer, Integer) -> Integer 3.85/1.92 + ~ Add: (Integer, Integer) -> Integer 3.85/1.92 > ~ Gt: (Integer, Integer) -> Boolean 3.85/1.92 -1 ~ UnaryMinus: (Integer) -> Integer 3.85/1.92 < ~ Lt: (Integer, Integer) -> Boolean 3.85/1.92 || ~ Lor: (Boolean, Boolean) -> Boolean 3.85/1.92 - ~ Sub: (Integer, Integer) -> Integer 3.85/1.92 ~ ~ Bwnot: (Integer) -> Integer 3.85/1.92 * ~ Mul: (Integer, Integer) -> Integer 3.85/1.92 >>> 3.85/1.92 3.85/1.92 The TRS R consists of the following rules: 3.85/1.92 sum(x, y) -> sif(x >= y, x, y) 3.85/1.92 sif(TRUE, x, y) -> y + sum(x, y + 1) 3.85/1.92 sif(FALSE, x, y) -> 0 3.85/1.92 The set Q consists of the following terms: 3.85/1.92 sum(x0, x1) 3.85/1.92 sif(TRUE, x0, x1) 3.85/1.92 sif(FALSE, x0, x1) 3.85/1.92 3.85/1.92 ---------------------------------------- 3.85/1.92 3.85/1.92 (1) ITRStoIDPProof (EQUIVALENT) 3.85/1.92 Added dependency pairs 3.85/1.92 ---------------------------------------- 3.85/1.92 3.85/1.92 (2) 3.85/1.92 Obligation: 3.85/1.92 IDP problem: 3.85/1.92 The following function symbols are pre-defined: 3.85/1.92 <<< 3.85/1.92 & ~ Bwand: (Integer, Integer) -> Integer 3.85/1.92 >= ~ Ge: (Integer, Integer) -> Boolean 3.85/1.92 | ~ Bwor: (Integer, Integer) -> Integer 3.85/1.92 / ~ Div: (Integer, Integer) -> Integer 3.85/1.92 != ~ Neq: (Integer, Integer) -> Boolean 3.85/1.92 && ~ Land: (Boolean, Boolean) -> Boolean 3.85/1.92 ! ~ Lnot: (Boolean) -> Boolean 3.85/1.92 = ~ Eq: (Integer, Integer) -> Boolean 3.85/1.92 <= ~ Le: (Integer, Integer) -> Boolean 3.85/1.92 ^ ~ Bwxor: (Integer, Integer) -> Integer 3.85/1.92 % ~ Mod: (Integer, Integer) -> Integer 3.85/1.92 + ~ Add: (Integer, Integer) -> Integer 3.85/1.92 > ~ Gt: (Integer, Integer) -> Boolean 3.85/1.92 -1 ~ UnaryMinus: (Integer) -> Integer 3.85/1.92 < ~ Lt: (Integer, Integer) -> Boolean 3.85/1.92 || ~ Lor: (Boolean, Boolean) -> Boolean 3.85/1.92 - ~ Sub: (Integer, Integer) -> Integer 3.85/1.92 ~ ~ Bwnot: (Integer) -> Integer 3.85/1.92 * ~ Mul: (Integer, Integer) -> Integer 3.85/1.92 >>> 3.85/1.92 3.85/1.92 3.85/1.92 The following domains are used: 3.85/1.92 Integer 3.85/1.92 3.85/1.92 The ITRS R consists of the following rules: 3.85/1.92 sum(x, y) -> sif(x >= y, x, y) 3.85/1.92 sif(TRUE, x, y) -> y + sum(x, y + 1) 3.85/1.92 sif(FALSE, x, y) -> 0 3.85/1.92 3.85/1.92 The integer pair graph contains the following rules and edges: 3.85/1.92 (0): SUM(x[0], y[0]) -> SIF(x[0] >= y[0], x[0], y[0]) 3.85/1.92 (1): SIF(TRUE, x[1], y[1]) -> SUM(x[1], y[1] + 1) 3.85/1.92 3.85/1.92 (0) -> (1), if (x[0] >= y[0] & x[0] ->^* x[1] & y[0] ->^* y[1]) 3.85/1.92 (1) -> (0), if (x[1] ->^* x[0] & y[1] + 1 ->^* y[0]) 3.85/1.92 3.85/1.92 The set Q consists of the following terms: 3.85/1.92 sum(x0, x1) 3.85/1.92 sif(TRUE, x0, x1) 3.85/1.92 sif(FALSE, x0, x1) 3.85/1.92 3.85/1.92 ---------------------------------------- 3.85/1.92 3.85/1.92 (3) UsableRulesProof (EQUIVALENT) 3.85/1.92 As all Q-normal forms are R-normal forms we are in the innermost case. Hence, by the usable rules processor [LPAR04] we can delete all non-usable rules [FROCOS05] from R. 3.85/1.92 ---------------------------------------- 3.85/1.92 3.85/1.92 (4) 3.85/1.92 Obligation: 3.85/1.92 IDP problem: 3.85/1.92 The following function symbols are pre-defined: 3.85/1.92 <<< 3.85/1.92 & ~ Bwand: (Integer, Integer) -> Integer 3.85/1.92 >= ~ Ge: (Integer, Integer) -> Boolean 3.85/1.92 | ~ Bwor: (Integer, Integer) -> Integer 3.85/1.92 / ~ Div: (Integer, Integer) -> Integer 3.85/1.92 != ~ Neq: (Integer, Integer) -> Boolean 3.85/1.92 && ~ Land: (Boolean, Boolean) -> Boolean 3.85/1.92 ! ~ Lnot: (Boolean) -> Boolean 3.85/1.92 = ~ Eq: (Integer, Integer) -> Boolean 3.85/1.92 <= ~ Le: (Integer, Integer) -> Boolean 3.85/1.92 ^ ~ Bwxor: (Integer, Integer) -> Integer 3.85/1.92 % ~ Mod: (Integer, Integer) -> Integer 3.85/1.92 + ~ Add: (Integer, Integer) -> Integer 3.85/1.92 > ~ Gt: (Integer, Integer) -> Boolean 3.85/1.92 -1 ~ UnaryMinus: (Integer) -> Integer 3.85/1.92 < ~ Lt: (Integer, Integer) -> Boolean 3.85/1.92 || ~ Lor: (Boolean, Boolean) -> Boolean 3.85/1.92 - ~ Sub: (Integer, Integer) -> Integer 3.85/1.92 ~ ~ Bwnot: (Integer) -> Integer 3.85/1.92 * ~ Mul: (Integer, Integer) -> Integer 3.85/1.92 >>> 3.85/1.92 3.85/1.92 3.85/1.92 The following domains are used: 3.85/1.92 Integer 3.85/1.92 3.85/1.92 R is empty. 3.85/1.92 3.85/1.92 The integer pair graph contains the following rules and edges: 3.85/1.92 (0): SUM(x[0], y[0]) -> SIF(x[0] >= y[0], x[0], y[0]) 3.85/1.92 (1): SIF(TRUE, x[1], y[1]) -> SUM(x[1], y[1] + 1) 3.85/1.92 3.85/1.92 (0) -> (1), if (x[0] >= y[0] & x[0] ->^* x[1] & y[0] ->^* y[1]) 3.85/1.92 (1) -> (0), if (x[1] ->^* x[0] & y[1] + 1 ->^* y[0]) 3.85/1.92 3.85/1.92 The set Q consists of the following terms: 3.85/1.92 sum(x0, x1) 3.85/1.92 sif(TRUE, x0, x1) 3.85/1.92 sif(FALSE, x0, x1) 3.85/1.92 3.85/1.92 ---------------------------------------- 3.85/1.92 3.85/1.92 (5) IDPNonInfProof (SOUND) 3.85/1.92 Used the following options for this NonInfProof: 3.85/1.92 3.85/1.92 IDPGPoloSolver: 3.85/1.92 Range: [(-1,2)] 3.85/1.92 IsNat: false 3.85/1.92 Interpretation Shape Heuristic: aprove.DPFramework.IDPProblem.Processors.nonInf.poly.IdpDefaultShapeHeuristic@701c2ff8 3.85/1.92 Constraint Generator: NonInfConstraintGenerator: 3.85/1.92 PathGenerator: MetricPathGenerator: 3.85/1.92 Max Left Steps: 1 3.85/1.92 Max Right Steps: 1 3.85/1.92 3.85/1.92 3.85/1.92 3.85/1.92 The constraints were generated the following way: 3.85/1.92 3.85/1.92 The DP Problem is simplified using the Induction Calculus [NONINF] with the following steps: 3.85/1.92 3.85/1.92 Note that final constraints are written in bold face. 3.85/1.92 3.85/1.92 3.85/1.92 3.85/1.92 For Pair SUM(x, y) -> SIF(>=(x, y), x, y) the following chains were created: 3.85/1.92 *We consider the chain SUM(x[0], y[0]) -> SIF(>=(x[0], y[0]), x[0], y[0]), SIF(TRUE, x[1], y[1]) -> SUM(x[1], +(y[1], 1)) which results in the following constraint: 3.85/1.92 3.85/1.92 (1) (>=(x[0], y[0])=TRUE & x[0]=x[1] & y[0]=y[1] ==> SUM(x[0], y[0])_>=_NonInfC & SUM(x[0], y[0])_>=_SIF(>=(x[0], y[0]), x[0], y[0]) & (U^Increasing(SIF(>=(x[0], y[0]), x[0], y[0])), >=)) 3.85/1.92 3.85/1.92 3.85/1.92 3.85/1.92 We simplified constraint (1) using rule (IV) which results in the following new constraint: 3.85/1.92 3.85/1.92 (2) (>=(x[0], y[0])=TRUE ==> SUM(x[0], y[0])_>=_NonInfC & SUM(x[0], y[0])_>=_SIF(>=(x[0], y[0]), x[0], y[0]) & (U^Increasing(SIF(>=(x[0], y[0]), x[0], y[0])), >=)) 3.85/1.92 3.85/1.92 3.85/1.92 3.85/1.92 We simplified constraint (2) using rule (POLY_CONSTRAINTS) which results in the following new constraint: 3.85/1.92 3.85/1.92 (3) (x[0] + [-1]y[0] >= 0 ==> (U^Increasing(SIF(>=(x[0], y[0]), x[0], y[0])), >=) & [(2)bni_11 + (-1)Bound*bni_11] + [(-1)bni_11]y[0] + [bni_11]x[0] >= 0 & [(-1)bso_12] >= 0) 3.85/1.92 3.85/1.92 3.85/1.92 3.85/1.92 We simplified constraint (3) using rule (IDP_POLY_SIMPLIFY) which results in the following new constraint: 3.85/1.92 3.85/1.92 (4) (x[0] + [-1]y[0] >= 0 ==> (U^Increasing(SIF(>=(x[0], y[0]), x[0], y[0])), >=) & [(2)bni_11 + (-1)Bound*bni_11] + [(-1)bni_11]y[0] + [bni_11]x[0] >= 0 & [(-1)bso_12] >= 0) 3.85/1.92 3.85/1.92 3.85/1.92 3.85/1.92 We simplified constraint (4) using rule (POLY_REMOVE_MIN_MAX) which results in the following new constraint: 3.85/1.92 3.85/1.92 (5) (x[0] + [-1]y[0] >= 0 ==> (U^Increasing(SIF(>=(x[0], y[0]), x[0], y[0])), >=) & [(2)bni_11 + (-1)Bound*bni_11] + [(-1)bni_11]y[0] + [bni_11]x[0] >= 0 & [(-1)bso_12] >= 0) 3.85/1.92 3.85/1.92 3.85/1.92 3.85/1.92 We simplified constraint (5) using rule (IDP_SMT_SPLIT) which results in the following new constraint: 3.85/1.92 3.85/1.92 (6) (x[0] >= 0 ==> (U^Increasing(SIF(>=(x[0], y[0]), x[0], y[0])), >=) & [(2)bni_11 + (-1)Bound*bni_11] + [bni_11]x[0] >= 0 & [(-1)bso_12] >= 0) 3.85/1.92 3.85/1.92 3.85/1.92 3.85/1.92 We simplified constraint (6) using rule (IDP_SMT_SPLIT) which results in the following new constraints: 3.85/1.92 3.85/1.92 (7) (x[0] >= 0 & y[0] >= 0 ==> (U^Increasing(SIF(>=(x[0], y[0]), x[0], y[0])), >=) & [(2)bni_11 + (-1)Bound*bni_11] + [bni_11]x[0] >= 0 & [(-1)bso_12] >= 0) 3.85/1.92 3.85/1.92 (8) (x[0] >= 0 & y[0] >= 0 ==> (U^Increasing(SIF(>=(x[0], y[0]), x[0], y[0])), >=) & [(2)bni_11 + (-1)Bound*bni_11] + [bni_11]x[0] >= 0 & [(-1)bso_12] >= 0) 3.85/1.92 3.85/1.92 3.85/1.92 3.85/1.92 3.85/1.92 3.85/1.92 3.85/1.92 3.85/1.92 3.85/1.92 For Pair SIF(TRUE, x, y) -> SUM(x, +(y, 1)) the following chains were created: 3.85/1.92 *We consider the chain SUM(x[0], y[0]) -> SIF(>=(x[0], y[0]), x[0], y[0]), SIF(TRUE, x[1], y[1]) -> SUM(x[1], +(y[1], 1)), SUM(x[0], y[0]) -> SIF(>=(x[0], y[0]), x[0], y[0]) which results in the following constraint: 3.85/1.92 3.85/1.92 (1) (>=(x[0], y[0])=TRUE & x[0]=x[1] & y[0]=y[1] & x[1]=x[0]1 & +(y[1], 1)=y[0]1 ==> SIF(TRUE, x[1], y[1])_>=_NonInfC & SIF(TRUE, x[1], y[1])_>=_SUM(x[1], +(y[1], 1)) & (U^Increasing(SUM(x[1], +(y[1], 1))), >=)) 3.85/1.92 3.85/1.92 3.85/1.92 3.85/1.92 We simplified constraint (1) using rules (III), (IV) which results in the following new constraint: 3.85/1.92 3.85/1.92 (2) (>=(x[0], y[0])=TRUE ==> SIF(TRUE, x[0], y[0])_>=_NonInfC & SIF(TRUE, x[0], y[0])_>=_SUM(x[0], +(y[0], 1)) & (U^Increasing(SUM(x[1], +(y[1], 1))), >=)) 3.85/1.92 3.85/1.92 3.85/1.92 3.85/1.92 We simplified constraint (2) using rule (POLY_CONSTRAINTS) which results in the following new constraint: 3.85/1.92 3.85/1.92 (3) (x[0] + [-1]y[0] >= 0 ==> (U^Increasing(SUM(x[1], +(y[1], 1))), >=) & [(2)bni_13 + (-1)Bound*bni_13] + [(-1)bni_13]y[0] + [bni_13]x[0] >= 0 & [1 + (-1)bso_14] >= 0) 3.85/1.92 3.85/1.92 3.85/1.92 3.85/1.92 We simplified constraint (3) using rule (IDP_POLY_SIMPLIFY) which results in the following new constraint: 3.85/1.92 3.85/1.92 (4) (x[0] + [-1]y[0] >= 0 ==> (U^Increasing(SUM(x[1], +(y[1], 1))), >=) & [(2)bni_13 + (-1)Bound*bni_13] + [(-1)bni_13]y[0] + [bni_13]x[0] >= 0 & [1 + (-1)bso_14] >= 0) 3.85/1.92 3.85/1.92 3.85/1.92 3.85/1.92 We simplified constraint (4) using rule (POLY_REMOVE_MIN_MAX) which results in the following new constraint: 3.85/1.92 3.85/1.92 (5) (x[0] + [-1]y[0] >= 0 ==> (U^Increasing(SUM(x[1], +(y[1], 1))), >=) & [(2)bni_13 + (-1)Bound*bni_13] + [(-1)bni_13]y[0] + [bni_13]x[0] >= 0 & [1 + (-1)bso_14] >= 0) 3.85/1.92 3.85/1.92 3.85/1.92 3.85/1.92 We simplified constraint (5) using rule (IDP_SMT_SPLIT) which results in the following new constraint: 3.85/1.92 3.85/1.92 (6) (x[0] >= 0 ==> (U^Increasing(SUM(x[1], +(y[1], 1))), >=) & [(2)bni_13 + (-1)Bound*bni_13] + [bni_13]x[0] >= 0 & [1 + (-1)bso_14] >= 0) 3.85/1.92 3.85/1.92 3.85/1.92 3.85/1.92 We simplified constraint (6) using rule (IDP_SMT_SPLIT) which results in the following new constraints: 3.85/1.92 3.85/1.92 (7) (x[0] >= 0 & y[0] >= 0 ==> (U^Increasing(SUM(x[1], +(y[1], 1))), >=) & [(2)bni_13 + (-1)Bound*bni_13] + [bni_13]x[0] >= 0 & [1 + (-1)bso_14] >= 0) 3.85/1.92 3.85/1.92 (8) (x[0] >= 0 & y[0] >= 0 ==> (U^Increasing(SUM(x[1], +(y[1], 1))), >=) & [(2)bni_13 + (-1)Bound*bni_13] + [bni_13]x[0] >= 0 & [1 + (-1)bso_14] >= 0) 3.85/1.92 3.85/1.92 3.85/1.92 3.85/1.92 3.85/1.92 3.85/1.92 3.85/1.92 3.85/1.92 3.85/1.92 To summarize, we get the following constraints P__>=_ for the following pairs. 3.85/1.92 3.85/1.92 *SUM(x, y) -> SIF(>=(x, y), x, y) 3.85/1.92 3.85/1.92 *(x[0] >= 0 & y[0] >= 0 ==> (U^Increasing(SIF(>=(x[0], y[0]), x[0], y[0])), >=) & [(2)bni_11 + (-1)Bound*bni_11] + [bni_11]x[0] >= 0 & [(-1)bso_12] >= 0) 3.85/1.92 3.85/1.92 3.85/1.92 *(x[0] >= 0 & y[0] >= 0 ==> (U^Increasing(SIF(>=(x[0], y[0]), x[0], y[0])), >=) & [(2)bni_11 + (-1)Bound*bni_11] + [bni_11]x[0] >= 0 & [(-1)bso_12] >= 0) 3.85/1.92 3.85/1.92 3.85/1.92 3.85/1.92 3.85/1.92 *SIF(TRUE, x, y) -> SUM(x, +(y, 1)) 3.85/1.92 3.85/1.92 *(x[0] >= 0 & y[0] >= 0 ==> (U^Increasing(SUM(x[1], +(y[1], 1))), >=) & [(2)bni_13 + (-1)Bound*bni_13] + [bni_13]x[0] >= 0 & [1 + (-1)bso_14] >= 0) 3.85/1.92 3.85/1.92 3.85/1.92 *(x[0] >= 0 & y[0] >= 0 ==> (U^Increasing(SUM(x[1], +(y[1], 1))), >=) & [(2)bni_13 + (-1)Bound*bni_13] + [bni_13]x[0] >= 0 & [1 + (-1)bso_14] >= 0) 3.85/1.92 3.85/1.92 3.85/1.92 3.85/1.92 3.85/1.92 3.85/1.92 3.85/1.92 3.85/1.92 3.85/1.92 The constraints for P_> respective P_bound are constructed from P__>=_ where we just replace every occurence of "t _>=_ s" in P__>=_ by "t > s" respective "t _>=_ c". Here c stands for the fresh constant used for P_bound. 3.85/1.92 3.85/1.92 Using the following integer polynomial ordering the resulting constraints can be solved 3.85/1.92 3.85/1.92 Polynomial interpretation over integers[POLO]: 3.85/1.92 3.85/1.92 POL(TRUE) = [2] 3.85/1.92 POL(FALSE) = 0 3.85/1.92 POL(SUM(x_1, x_2)) = [2] + [-1]x_2 + x_1 3.85/1.92 POL(SIF(x_1, x_2, x_3)) = [2] + [-1]x_3 + x_2 3.85/1.92 POL(>=(x_1, x_2)) = 0 3.85/1.92 POL(+(x_1, x_2)) = x_1 + x_2 3.85/1.92 POL(1) = [1] 3.85/1.92 3.85/1.92 3.85/1.92 The following pairs are in P_>: 3.85/1.92 3.85/1.92 3.85/1.92 SIF(TRUE, x[1], y[1]) -> SUM(x[1], +(y[1], 1)) 3.85/1.92 3.85/1.92 3.85/1.92 The following pairs are in P_bound: 3.85/1.92 3.85/1.92 3.85/1.92 SUM(x[0], y[0]) -> SIF(>=(x[0], y[0]), x[0], y[0]) 3.85/1.92 SIF(TRUE, x[1], y[1]) -> SUM(x[1], +(y[1], 1)) 3.85/1.92 3.85/1.92 3.85/1.92 The following pairs are in P_>=: 3.85/1.92 3.85/1.92 3.85/1.92 SUM(x[0], y[0]) -> SIF(>=(x[0], y[0]), x[0], y[0]) 3.85/1.92 3.85/1.92 3.85/1.92 There are no usable rules. 3.85/1.92 ---------------------------------------- 3.85/1.92 3.85/1.92 (6) 3.85/1.92 Obligation: 3.85/1.92 IDP problem: 3.85/1.92 The following function symbols are pre-defined: 3.85/1.92 <<< 3.85/1.92 & ~ Bwand: (Integer, Integer) -> Integer 3.85/1.92 >= ~ Ge: (Integer, Integer) -> Boolean 3.85/1.92 | ~ Bwor: (Integer, Integer) -> Integer 3.85/1.92 / ~ Div: (Integer, Integer) -> Integer 3.85/1.92 != ~ Neq: (Integer, Integer) -> Boolean 3.85/1.92 && ~ Land: (Boolean, Boolean) -> Boolean 3.85/1.92 ! ~ Lnot: (Boolean) -> Boolean 3.85/1.92 = ~ Eq: (Integer, Integer) -> Boolean 3.85/1.92 <= ~ Le: (Integer, Integer) -> Boolean 3.85/1.92 ^ ~ Bwxor: (Integer, Integer) -> Integer 3.85/1.92 % ~ Mod: (Integer, Integer) -> Integer 3.85/1.92 + ~ Add: (Integer, Integer) -> Integer 3.85/1.92 > ~ Gt: (Integer, Integer) -> Boolean 3.85/1.93 -1 ~ UnaryMinus: (Integer) -> Integer 3.85/1.93 < ~ Lt: (Integer, Integer) -> Boolean 3.85/1.93 || ~ Lor: (Boolean, Boolean) -> Boolean 3.85/1.93 - ~ Sub: (Integer, Integer) -> Integer 3.85/1.93 ~ ~ Bwnot: (Integer) -> Integer 3.85/1.93 * ~ Mul: (Integer, Integer) -> Integer 3.85/1.93 >>> 3.85/1.93 3.85/1.93 3.85/1.93 The following domains are used: 3.85/1.93 Integer 3.85/1.93 3.85/1.93 R is empty. 3.85/1.93 3.85/1.93 The integer pair graph contains the following rules and edges: 3.85/1.93 (0): SUM(x[0], y[0]) -> SIF(x[0] >= y[0], x[0], y[0]) 3.85/1.93 3.85/1.93 3.85/1.93 The set Q consists of the following terms: 3.85/1.93 sum(x0, x1) 3.85/1.93 sif(TRUE, x0, x1) 3.85/1.93 sif(FALSE, x0, x1) 3.85/1.93 3.85/1.93 ---------------------------------------- 3.85/1.93 3.85/1.93 (7) IDependencyGraphProof (EQUIVALENT) 3.85/1.93 The approximation of the Dependency Graph [LPAR04,FROCOS05,EDGSTAR] contains 0 SCCs with 1 less node. 3.85/1.93 ---------------------------------------- 3.85/1.93 3.85/1.93 (8) 3.85/1.93 TRUE 3.85/1.95 EOF