/export/starexec/sandbox2/solver/bin/starexec_run_standard /export/starexec/sandbox2/benchmark/theBenchmark.hs /export/starexec/sandbox2/output/output_files -------------------------------------------------------------------------------- YES proof of /export/starexec/sandbox2/benchmark/theBenchmark.hs # AProVE Commit ID: 794c25de1cacf0d048858bcd21c9a779e1221865 marcel 20200619 unpublished dirty H-Termination with start terms of the given HASKELL could be proven: (0) HASKELL (1) BR [EQUIVALENT, 0 ms] (2) HASKELL (3) COR [EQUIVALENT, 0 ms] (4) HASKELL (5) Narrow [SOUND, 0 ms] (6) AND (7) QDP (8) QDPSizeChangeProof [EQUIVALENT, 0 ms] (9) YES (10) QDP (11) QDPSizeChangeProof [EQUIVALENT, 0 ms] (12) YES (13) QDP (14) QDPSizeChangeProof [EQUIVALENT, 0 ms] (15) YES ---------------------------------------- (0) Obligation: mainModule Main module Main where { import qualified Prelude; data List a = Cons a (List a) | Nil ; data MyInt = Pos Main.Nat | Neg Main.Nat ; data Main.Nat = Succ Main.Nat | Zero ; data Main.WHNF a = WHNF a ; dsEm :: (a -> b) -> a -> b; dsEm f x = Main.seq x (f x); enforceWHNF :: Main.WHNF b -> a -> a; enforceWHNF (Main.WHNF x) y = y; foldl' :: (b -> a -> b) -> b -> List a -> b; foldl' f a Nil = a; foldl' f a (Cons x xs) = dsEm (foldl' f) (f a x) xs; fromIntMyInt :: MyInt -> MyInt; fromIntMyInt x = x; primMinusNat :: Main.Nat -> Main.Nat -> MyInt; primMinusNat Main.Zero Main.Zero = Main.Pos Main.Zero; primMinusNat Main.Zero (Main.Succ y) = Main.Neg (Main.Succ y); primMinusNat (Main.Succ x) Main.Zero = Main.Pos (Main.Succ x); primMinusNat (Main.Succ x) (Main.Succ y) = primMinusNat x y; primPlusInt :: MyInt -> MyInt -> MyInt; primPlusInt (Main.Pos x) (Main.Neg y) = primMinusNat x y; primPlusInt (Main.Neg x) (Main.Pos y) = primMinusNat y x; primPlusInt (Main.Neg x) (Main.Neg y) = Main.Neg (primPlusNat x y); primPlusInt (Main.Pos x) (Main.Pos y) = Main.Pos (primPlusNat x y); primPlusNat :: Main.Nat -> Main.Nat -> Main.Nat; primPlusNat Main.Zero Main.Zero = Main.Zero; primPlusNat Main.Zero (Main.Succ y) = Main.Succ y; primPlusNat (Main.Succ x) Main.Zero = Main.Succ x; primPlusNat (Main.Succ x) (Main.Succ y) = Main.Succ (Main.Succ (primPlusNat x y)); psMyInt :: MyInt -> MyInt -> MyInt; psMyInt = primPlusInt; seq :: b -> a -> a; seq x y = Main.enforceWHNF (Main.WHNF x) y; sumMyInt :: List MyInt -> MyInt; sumMyInt = foldl' psMyInt (fromIntMyInt (Main.Pos Main.Zero)); } ---------------------------------------- (1) BR (EQUIVALENT) Replaced joker patterns by fresh variables and removed binding patterns. ---------------------------------------- (2) Obligation: mainModule Main module Main where { import qualified Prelude; data List a = Cons a (List a) | Nil ; data MyInt = Pos Main.Nat | Neg Main.Nat ; data Main.Nat = Succ Main.Nat | Zero ; data Main.WHNF a = WHNF a ; dsEm :: (a -> b) -> a -> b; dsEm f x = Main.seq x (f x); enforceWHNF :: Main.WHNF a -> b -> b; enforceWHNF (Main.WHNF x) y = y; foldl' :: (b -> a -> b) -> b -> List a -> b; foldl' f a Nil = a; foldl' f a (Cons x xs) = dsEm (foldl' f) (f a x) xs; fromIntMyInt :: MyInt -> MyInt; fromIntMyInt x = x; primMinusNat :: Main.Nat -> Main.Nat -> MyInt; primMinusNat Main.Zero Main.Zero = Main.Pos Main.Zero; primMinusNat Main.Zero (Main.Succ y) = Main.Neg (Main.Succ y); primMinusNat (Main.Succ x) Main.Zero = Main.Pos (Main.Succ x); primMinusNat (Main.Succ x) (Main.Succ y) = primMinusNat x y; primPlusInt :: MyInt -> MyInt -> MyInt; primPlusInt (Main.Pos x) (Main.Neg y) = primMinusNat x y; primPlusInt (Main.Neg x) (Main.Pos y) = primMinusNat y x; primPlusInt (Main.Neg x) (Main.Neg y) = Main.Neg (primPlusNat x y); primPlusInt (Main.Pos x) (Main.Pos y) = Main.Pos (primPlusNat x y); primPlusNat :: Main.Nat -> Main.Nat -> Main.Nat; primPlusNat Main.Zero Main.Zero = Main.Zero; primPlusNat Main.Zero (Main.Succ y) = Main.Succ y; primPlusNat (Main.Succ x) Main.Zero = Main.Succ x; primPlusNat (Main.Succ x) (Main.Succ y) = Main.Succ (Main.Succ (primPlusNat x y)); psMyInt :: MyInt -> MyInt -> MyInt; psMyInt = primPlusInt; seq :: a -> b -> b; seq x y = Main.enforceWHNF (Main.WHNF x) y; sumMyInt :: List MyInt -> MyInt; sumMyInt = foldl' psMyInt (fromIntMyInt (Main.Pos Main.Zero)); } ---------------------------------------- (3) COR (EQUIVALENT) Cond Reductions: The following Function with conditions "undefined |Falseundefined; " is transformed to "undefined = undefined1; " "undefined0 True = undefined; " "undefined1 = undefined0 False; " ---------------------------------------- (4) Obligation: mainModule Main module Main where { import qualified Prelude; data List a = Cons a (List a) | Nil ; data MyInt = Pos Main.Nat | Neg Main.Nat ; data Main.Nat = Succ Main.Nat | Zero ; data Main.WHNF a = WHNF a ; dsEm :: (a -> b) -> a -> b; dsEm f x = Main.seq x (f x); enforceWHNF :: Main.WHNF b -> a -> a; enforceWHNF (Main.WHNF x) y = y; foldl' :: (a -> b -> a) -> a -> List b -> a; foldl' f a Nil = a; foldl' f a (Cons x xs) = dsEm (foldl' f) (f a x) xs; fromIntMyInt :: MyInt -> MyInt; fromIntMyInt x = x; primMinusNat :: Main.Nat -> Main.Nat -> MyInt; primMinusNat Main.Zero Main.Zero = Main.Pos Main.Zero; primMinusNat Main.Zero (Main.Succ y) = Main.Neg (Main.Succ y); primMinusNat (Main.Succ x) Main.Zero = Main.Pos (Main.Succ x); primMinusNat (Main.Succ x) (Main.Succ y) = primMinusNat x y; primPlusInt :: MyInt -> MyInt -> MyInt; primPlusInt (Main.Pos x) (Main.Neg y) = primMinusNat x y; primPlusInt (Main.Neg x) (Main.Pos y) = primMinusNat y x; primPlusInt (Main.Neg x) (Main.Neg y) = Main.Neg (primPlusNat x y); primPlusInt (Main.Pos x) (Main.Pos y) = Main.Pos (primPlusNat x y); primPlusNat :: Main.Nat -> Main.Nat -> Main.Nat; primPlusNat Main.Zero Main.Zero = Main.Zero; primPlusNat Main.Zero (Main.Succ y) = Main.Succ y; primPlusNat (Main.Succ x) Main.Zero = Main.Succ x; primPlusNat (Main.Succ x) (Main.Succ y) = Main.Succ (Main.Succ (primPlusNat x y)); psMyInt :: MyInt -> MyInt -> MyInt; psMyInt = primPlusInt; seq :: b -> a -> a; seq x y = Main.enforceWHNF (Main.WHNF x) y; sumMyInt :: List MyInt -> MyInt; sumMyInt = foldl' psMyInt (fromIntMyInt (Main.Pos Main.Zero)); } ---------------------------------------- (5) Narrow (SOUND) Haskell To QDPs digraph dp_graph { node [outthreshold=100, inthreshold=100];1[label="sumMyInt",fontsize=16,color="grey",shape="box"];1 -> 3[label="",style="dashed", color="grey", weight=3]; 3[label="sumMyInt vx3",fontsize=16,color="black",shape="triangle"];3 -> 4[label="",style="solid", color="black", weight=3]; 4[label="foldl' psMyInt (fromIntMyInt (Pos Zero)) vx3",fontsize=16,color="burlywood",shape="box"];67[label="vx3/Cons vx30 vx31",fontsize=10,color="white",style="solid",shape="box"];4 -> 67[label="",style="solid", color="burlywood", weight=9]; 67 -> 5[label="",style="solid", color="burlywood", weight=3]; 68[label="vx3/Nil",fontsize=10,color="white",style="solid",shape="box"];4 -> 68[label="",style="solid", color="burlywood", weight=9]; 68 -> 6[label="",style="solid", color="burlywood", weight=3]; 5[label="foldl' psMyInt (fromIntMyInt (Pos Zero)) (Cons vx30 vx31)",fontsize=16,color="black",shape="box"];5 -> 7[label="",style="solid", color="black", weight=3]; 6[label="foldl' psMyInt (fromIntMyInt (Pos Zero)) Nil",fontsize=16,color="black",shape="box"];6 -> 8[label="",style="solid", color="black", weight=3]; 7[label="dsEm (foldl' psMyInt) (psMyInt (fromIntMyInt (Pos Zero)) vx30) vx31",fontsize=16,color="black",shape="box"];7 -> 9[label="",style="solid", color="black", weight=3]; 8[label="fromIntMyInt (Pos Zero)",fontsize=16,color="black",shape="triangle"];8 -> 10[label="",style="solid", color="black", weight=3]; 9 -> 11[label="",style="dashed", color="red", weight=0]; 9[label="seq (psMyInt (fromIntMyInt (Pos Zero)) vx30) (foldl' psMyInt (psMyInt (fromIntMyInt (Pos Zero)) vx30)) vx31",fontsize=16,color="magenta"];9 -> 12[label="",style="dashed", color="magenta", weight=3]; 9 -> 13[label="",style="dashed", color="magenta", weight=3]; 10[label="Pos Zero",fontsize=16,color="green",shape="box"];12 -> 8[label="",style="dashed", color="red", weight=0]; 12[label="fromIntMyInt (Pos Zero)",fontsize=16,color="magenta"];13 -> 8[label="",style="dashed", color="red", weight=0]; 13[label="fromIntMyInt (Pos Zero)",fontsize=16,color="magenta"];11[label="seq (psMyInt vx4 vx30) (foldl' psMyInt (psMyInt vx5 vx30)) vx31",fontsize=16,color="black",shape="triangle"];11 -> 14[label="",style="solid", color="black", weight=3]; 14[label="enforceWHNF (WHNF (psMyInt vx4 vx30)) (foldl' psMyInt (psMyInt vx5 vx30)) vx31",fontsize=16,color="black",shape="box"];14 -> 15[label="",style="solid", color="black", weight=3]; 15[label="foldl' psMyInt (psMyInt vx5 vx30) vx31",fontsize=16,color="burlywood",shape="box"];69[label="vx31/Cons vx310 vx311",fontsize=10,color="white",style="solid",shape="box"];15 -> 69[label="",style="solid", color="burlywood", weight=9]; 69 -> 16[label="",style="solid", color="burlywood", weight=3]; 70[label="vx31/Nil",fontsize=10,color="white",style="solid",shape="box"];15 -> 70[label="",style="solid", color="burlywood", weight=9]; 70 -> 17[label="",style="solid", color="burlywood", weight=3]; 16[label="foldl' psMyInt (psMyInt vx5 vx30) (Cons vx310 vx311)",fontsize=16,color="black",shape="box"];16 -> 18[label="",style="solid", color="black", weight=3]; 17[label="foldl' psMyInt (psMyInt vx5 vx30) Nil",fontsize=16,color="black",shape="box"];17 -> 19[label="",style="solid", color="black", weight=3]; 18[label="dsEm (foldl' psMyInt) (psMyInt (psMyInt vx5 vx30) vx310) vx311",fontsize=16,color="black",shape="box"];18 -> 20[label="",style="solid", color="black", weight=3]; 19[label="psMyInt vx5 vx30",fontsize=16,color="black",shape="triangle"];19 -> 21[label="",style="solid", color="black", weight=3]; 20 -> 11[label="",style="dashed", color="red", weight=0]; 20[label="seq (psMyInt (psMyInt vx5 vx30) vx310) (foldl' psMyInt (psMyInt (psMyInt vx5 vx30) vx310)) vx311",fontsize=16,color="magenta"];20 -> 22[label="",style="dashed", color="magenta", weight=3]; 20 -> 23[label="",style="dashed", color="magenta", weight=3]; 20 -> 24[label="",style="dashed", color="magenta", weight=3]; 20 -> 25[label="",style="dashed", color="magenta", weight=3]; 21[label="primPlusInt vx5 vx30",fontsize=16,color="burlywood",shape="box"];71[label="vx5/Pos vx50",fontsize=10,color="white",style="solid",shape="box"];21 -> 71[label="",style="solid", color="burlywood", weight=9]; 71 -> 26[label="",style="solid", color="burlywood", weight=3]; 72[label="vx5/Neg vx50",fontsize=10,color="white",style="solid",shape="box"];21 -> 72[label="",style="solid", color="burlywood", weight=9]; 72 -> 27[label="",style="solid", color="burlywood", weight=3]; 22 -> 19[label="",style="dashed", color="red", weight=0]; 22[label="psMyInt vx5 vx30",fontsize=16,color="magenta"];23[label="vx311",fontsize=16,color="green",shape="box"];24[label="vx310",fontsize=16,color="green",shape="box"];25 -> 19[label="",style="dashed", color="red", weight=0]; 25[label="psMyInt vx5 vx30",fontsize=16,color="magenta"];26[label="primPlusInt (Pos vx50) vx30",fontsize=16,color="burlywood",shape="box"];73[label="vx30/Pos vx300",fontsize=10,color="white",style="solid",shape="box"];26 -> 73[label="",style="solid", color="burlywood", weight=9]; 73 -> 28[label="",style="solid", color="burlywood", weight=3]; 74[label="vx30/Neg vx300",fontsize=10,color="white",style="solid",shape="box"];26 -> 74[label="",style="solid", color="burlywood", weight=9]; 74 -> 29[label="",style="solid", color="burlywood", weight=3]; 27[label="primPlusInt (Neg vx50) vx30",fontsize=16,color="burlywood",shape="box"];75[label="vx30/Pos vx300",fontsize=10,color="white",style="solid",shape="box"];27 -> 75[label="",style="solid", color="burlywood", weight=9]; 75 -> 30[label="",style="solid", color="burlywood", weight=3]; 76[label="vx30/Neg vx300",fontsize=10,color="white",style="solid",shape="box"];27 -> 76[label="",style="solid", color="burlywood", weight=9]; 76 -> 31[label="",style="solid", color="burlywood", weight=3]; 28[label="primPlusInt (Pos vx50) (Pos vx300)",fontsize=16,color="black",shape="box"];28 -> 32[label="",style="solid", color="black", weight=3]; 29[label="primPlusInt (Pos vx50) (Neg vx300)",fontsize=16,color="black",shape="box"];29 -> 33[label="",style="solid", color="black", weight=3]; 30[label="primPlusInt (Neg vx50) (Pos vx300)",fontsize=16,color="black",shape="box"];30 -> 34[label="",style="solid", color="black", weight=3]; 31[label="primPlusInt (Neg vx50) (Neg vx300)",fontsize=16,color="black",shape="box"];31 -> 35[label="",style="solid", color="black", weight=3]; 32[label="Pos (primPlusNat vx50 vx300)",fontsize=16,color="green",shape="box"];32 -> 36[label="",style="dashed", color="green", weight=3]; 33[label="primMinusNat vx50 vx300",fontsize=16,color="burlywood",shape="triangle"];77[label="vx50/Succ vx500",fontsize=10,color="white",style="solid",shape="box"];33 -> 77[label="",style="solid", color="burlywood", weight=9]; 77 -> 37[label="",style="solid", color="burlywood", weight=3]; 78[label="vx50/Zero",fontsize=10,color="white",style="solid",shape="box"];33 -> 78[label="",style="solid", color="burlywood", weight=9]; 78 -> 38[label="",style="solid", color="burlywood", weight=3]; 34 -> 33[label="",style="dashed", color="red", weight=0]; 34[label="primMinusNat vx300 vx50",fontsize=16,color="magenta"];34 -> 39[label="",style="dashed", color="magenta", weight=3]; 34 -> 40[label="",style="dashed", color="magenta", weight=3]; 35[label="Neg (primPlusNat vx50 vx300)",fontsize=16,color="green",shape="box"];35 -> 41[label="",style="dashed", color="green", weight=3]; 36[label="primPlusNat vx50 vx300",fontsize=16,color="burlywood",shape="triangle"];79[label="vx50/Succ vx500",fontsize=10,color="white",style="solid",shape="box"];36 -> 79[label="",style="solid", color="burlywood", weight=9]; 79 -> 42[label="",style="solid", color="burlywood", weight=3]; 80[label="vx50/Zero",fontsize=10,color="white",style="solid",shape="box"];36 -> 80[label="",style="solid", color="burlywood", weight=9]; 80 -> 43[label="",style="solid", color="burlywood", weight=3]; 37[label="primMinusNat (Succ vx500) vx300",fontsize=16,color="burlywood",shape="box"];81[label="vx300/Succ vx3000",fontsize=10,color="white",style="solid",shape="box"];37 -> 81[label="",style="solid", color="burlywood", weight=9]; 81 -> 44[label="",style="solid", color="burlywood", weight=3]; 82[label="vx300/Zero",fontsize=10,color="white",style="solid",shape="box"];37 -> 82[label="",style="solid", color="burlywood", weight=9]; 82 -> 45[label="",style="solid", color="burlywood", weight=3]; 38[label="primMinusNat Zero vx300",fontsize=16,color="burlywood",shape="box"];83[label="vx300/Succ vx3000",fontsize=10,color="white",style="solid",shape="box"];38 -> 83[label="",style="solid", color="burlywood", weight=9]; 83 -> 46[label="",style="solid", color="burlywood", weight=3]; 84[label="vx300/Zero",fontsize=10,color="white",style="solid",shape="box"];38 -> 84[label="",style="solid", color="burlywood", weight=9]; 84 -> 47[label="",style="solid", color="burlywood", weight=3]; 39[label="vx50",fontsize=16,color="green",shape="box"];40[label="vx300",fontsize=16,color="green",shape="box"];41 -> 36[label="",style="dashed", color="red", weight=0]; 41[label="primPlusNat vx50 vx300",fontsize=16,color="magenta"];41 -> 48[label="",style="dashed", color="magenta", weight=3]; 41 -> 49[label="",style="dashed", color="magenta", weight=3]; 42[label="primPlusNat (Succ vx500) vx300",fontsize=16,color="burlywood",shape="box"];85[label="vx300/Succ vx3000",fontsize=10,color="white",style="solid",shape="box"];42 -> 85[label="",style="solid", color="burlywood", weight=9]; 85 -> 50[label="",style="solid", color="burlywood", weight=3]; 86[label="vx300/Zero",fontsize=10,color="white",style="solid",shape="box"];42 -> 86[label="",style="solid", color="burlywood", weight=9]; 86 -> 51[label="",style="solid", color="burlywood", weight=3]; 43[label="primPlusNat Zero vx300",fontsize=16,color="burlywood",shape="box"];87[label="vx300/Succ vx3000",fontsize=10,color="white",style="solid",shape="box"];43 -> 87[label="",style="solid", color="burlywood", weight=9]; 87 -> 52[label="",style="solid", color="burlywood", weight=3]; 88[label="vx300/Zero",fontsize=10,color="white",style="solid",shape="box"];43 -> 88[label="",style="solid", color="burlywood", weight=9]; 88 -> 53[label="",style="solid", color="burlywood", weight=3]; 44[label="primMinusNat (Succ vx500) (Succ vx3000)",fontsize=16,color="black",shape="box"];44 -> 54[label="",style="solid", color="black", weight=3]; 45[label="primMinusNat (Succ vx500) Zero",fontsize=16,color="black",shape="box"];45 -> 55[label="",style="solid", color="black", weight=3]; 46[label="primMinusNat Zero (Succ vx3000)",fontsize=16,color="black",shape="box"];46 -> 56[label="",style="solid", color="black", weight=3]; 47[label="primMinusNat Zero Zero",fontsize=16,color="black",shape="box"];47 -> 57[label="",style="solid", color="black", weight=3]; 48[label="vx50",fontsize=16,color="green",shape="box"];49[label="vx300",fontsize=16,color="green",shape="box"];50[label="primPlusNat (Succ vx500) (Succ vx3000)",fontsize=16,color="black",shape="box"];50 -> 58[label="",style="solid", color="black", weight=3]; 51[label="primPlusNat (Succ vx500) Zero",fontsize=16,color="black",shape="box"];51 -> 59[label="",style="solid", color="black", weight=3]; 52[label="primPlusNat Zero (Succ vx3000)",fontsize=16,color="black",shape="box"];52 -> 60[label="",style="solid", color="black", weight=3]; 53[label="primPlusNat Zero Zero",fontsize=16,color="black",shape="box"];53 -> 61[label="",style="solid", color="black", weight=3]; 54 -> 33[label="",style="dashed", color="red", weight=0]; 54[label="primMinusNat vx500 vx3000",fontsize=16,color="magenta"];54 -> 62[label="",style="dashed", color="magenta", weight=3]; 54 -> 63[label="",style="dashed", color="magenta", weight=3]; 55[label="Pos (Succ vx500)",fontsize=16,color="green",shape="box"];56[label="Neg (Succ vx3000)",fontsize=16,color="green",shape="box"];57[label="Pos Zero",fontsize=16,color="green",shape="box"];58[label="Succ (Succ (primPlusNat vx500 vx3000))",fontsize=16,color="green",shape="box"];58 -> 64[label="",style="dashed", color="green", weight=3]; 59[label="Succ vx500",fontsize=16,color="green",shape="box"];60[label="Succ vx3000",fontsize=16,color="green",shape="box"];61[label="Zero",fontsize=16,color="green",shape="box"];62[label="vx3000",fontsize=16,color="green",shape="box"];63[label="vx500",fontsize=16,color="green",shape="box"];64 -> 36[label="",style="dashed", color="red", weight=0]; 64[label="primPlusNat vx500 vx3000",fontsize=16,color="magenta"];64 -> 65[label="",style="dashed", color="magenta", weight=3]; 64 -> 66[label="",style="dashed", color="magenta", weight=3]; 65[label="vx500",fontsize=16,color="green",shape="box"];66[label="vx3000",fontsize=16,color="green",shape="box"];} ---------------------------------------- (6) Complex Obligation (AND) ---------------------------------------- (7) Obligation: Q DP problem: The TRS P consists of the following rules: new_primMinusNat(Main.Succ(vx500), Main.Succ(vx3000)) -> new_primMinusNat(vx500, vx3000) R is empty. Q is empty. We have to consider all minimal (P,Q,R)-chains. ---------------------------------------- (8) QDPSizeChangeProof (EQUIVALENT) By using the subterm criterion [SUBTERM_CRITERION] together with the size-change analysis [AAECC05] we have proven that there are no infinite chains for this DP problem. From the DPs we obtained the following set of size-change graphs: *new_primMinusNat(Main.Succ(vx500), Main.Succ(vx3000)) -> new_primMinusNat(vx500, vx3000) The graph contains the following edges 1 > 1, 2 > 2 ---------------------------------------- (9) YES ---------------------------------------- (10) Obligation: Q DP problem: The TRS P consists of the following rules: new_primPlusNat(Main.Succ(vx500), Main.Succ(vx3000)) -> new_primPlusNat(vx500, vx3000) R is empty. Q is empty. We have to consider all minimal (P,Q,R)-chains. ---------------------------------------- (11) QDPSizeChangeProof (EQUIVALENT) By using the subterm criterion [SUBTERM_CRITERION] together with the size-change analysis [AAECC05] we have proven that there are no infinite chains for this DP problem. From the DPs we obtained the following set of size-change graphs: *new_primPlusNat(Main.Succ(vx500), Main.Succ(vx3000)) -> new_primPlusNat(vx500, vx3000) The graph contains the following edges 1 > 1, 2 > 2 ---------------------------------------- (12) YES ---------------------------------------- (13) Obligation: Q DP problem: The TRS P consists of the following rules: new_seq(vx4, vx30, vx5, Cons(vx310, vx311)) -> new_seq(new_psMyInt(vx5, vx30), vx310, new_psMyInt(vx5, vx30), vx311) The TRS R consists of the following rules: new_primMinusNat0(Main.Zero, Main.Zero) -> Main.Pos(Main.Zero) new_primMinusNat0(Main.Succ(vx500), Main.Succ(vx3000)) -> new_primMinusNat0(vx500, vx3000) new_primPlusNat0(Main.Succ(vx500), Main.Succ(vx3000)) -> Main.Succ(Main.Succ(new_primPlusNat0(vx500, vx3000))) new_primPlusNat0(Main.Zero, Main.Zero) -> Main.Zero new_primMinusNat0(Main.Zero, Main.Succ(vx3000)) -> Main.Neg(Main.Succ(vx3000)) new_primPlusNat0(Main.Succ(vx500), Main.Zero) -> Main.Succ(vx500) new_primPlusNat0(Main.Zero, Main.Succ(vx3000)) -> Main.Succ(vx3000) new_psMyInt(Main.Pos(vx50), Main.Neg(vx300)) -> new_primMinusNat0(vx50, vx300) new_psMyInt(Main.Neg(vx50), Main.Pos(vx300)) -> new_primMinusNat0(vx300, vx50) new_psMyInt(Main.Pos(vx50), Main.Pos(vx300)) -> Main.Pos(new_primPlusNat0(vx50, vx300)) new_psMyInt(Main.Neg(vx50), Main.Neg(vx300)) -> Main.Neg(new_primPlusNat0(vx50, vx300)) new_primMinusNat0(Main.Succ(vx500), Main.Zero) -> Main.Pos(Main.Succ(vx500)) The set Q consists of the following terms: new_primMinusNat0(Main.Succ(x0), Main.Succ(x1)) new_psMyInt(Main.Neg(x0), Main.Neg(x1)) new_primMinusNat0(Main.Succ(x0), Main.Zero) new_primPlusNat0(Main.Zero, Main.Zero) new_psMyInt(Main.Pos(x0), Main.Neg(x1)) new_psMyInt(Main.Neg(x0), Main.Pos(x1)) new_primMinusNat0(Main.Zero, Main.Zero) new_primPlusNat0(Main.Zero, Main.Succ(x0)) new_psMyInt(Main.Pos(x0), Main.Pos(x1)) new_primPlusNat0(Main.Succ(x0), Main.Succ(x1)) new_primMinusNat0(Main.Zero, Main.Succ(x0)) new_primPlusNat0(Main.Succ(x0), Main.Zero) We have to consider all minimal (P,Q,R)-chains. ---------------------------------------- (14) QDPSizeChangeProof (EQUIVALENT) By using the subterm criterion [SUBTERM_CRITERION] together with the size-change analysis [AAECC05] we have proven that there are no infinite chains for this DP problem. From the DPs we obtained the following set of size-change graphs: *new_seq(vx4, vx30, vx5, Cons(vx310, vx311)) -> new_seq(new_psMyInt(vx5, vx30), vx310, new_psMyInt(vx5, vx30), vx311) The graph contains the following edges 4 > 2, 4 > 4 ---------------------------------------- (15) YES