(0) Obligation:

JBC Problem based on JBC Program:
Manifest-Version: 1.0 Created-By: 1.6.0_16 (Sun Microsystems Inc.) Main-Class: PastaC3
/**
* Example taken from "A Term Rewriting Approach to the Automated Termination
* Analysis of Imperative Programs" (http://www.cs.unm.edu/~spf/papers/2009-02.pdf)
* and converted to Java.
*/

public class PastaC3 {
public static void main(String[] args) {
Random.args = args;
int x = Random.random();
int y = Random.random();
int z = Random.random();

while (x < y) {
if (x < z) {
x++;
} else {
z++;
}
}
}
}


public class Random {
static String[] args;
static int index = 0;

public static int random() {
String string = args[index];
index++;
return string.length();
}
}


(1) JBC2FIG (SOUND transformation)

Constructed FIGraph.

(2) Obligation:

FIGraph based on JBC Program:
PastaC3.main([Ljava/lang/String;)V: Graph of 228 nodes with 1 SCC.


(3) FIGtoITRSProof (SOUND transformation)

Transformed FIGraph SCCs to IDPs. Logs:


Log for SCC 0:

Generated 16 rules for P and 2 rules for R.


Combined rules. Obtained 2 rules for P and 0 rules for R.


Filtered ground terms:


917_0_main_Load(x1, x2, x3, x4, x5) → 917_0_main_Load(x2, x3, x4, x5)
Cond_917_0_main_Load1(x1, x2, x3, x4, x5, x6) → Cond_917_0_main_Load1(x1, x3, x4, x5, x6)
Cond_917_0_main_Load(x1, x2, x3, x4, x5, x6) → Cond_917_0_main_Load(x1, x3, x4, x5, x6)

Filtered duplicate args:


917_0_main_Load(x1, x2, x3, x4) → 917_0_main_Load(x2, x3, x4)
Cond_917_0_main_Load1(x1, x2, x3, x4, x5) → Cond_917_0_main_Load1(x1, x3, x4, x5)
Cond_917_0_main_Load(x1, x2, x3, x4, x5) → Cond_917_0_main_Load(x1, x3, x4, x5)

Combined rules. Obtained 2 rules for P and 0 rules for R.


Finished conversion. Obtained 2 rules for P and 0 rules for R. System has predefined symbols.


(4) Obligation:

IDP problem:
The following function symbols are pre-defined:
!=~Neq: (Integer, Integer) -> Boolean
*~Mul: (Integer, Integer) -> Integer
>=~Ge: (Integer, Integer) -> Boolean
-1~UnaryMinus: (Integer) -> Integer
|~Bwor: (Integer, Integer) -> Integer
/~Div: (Integer, Integer) -> Integer
=~Eq: (Integer, Integer) -> Boolean
~Bwxor: (Integer, Integer) -> Integer
||~Lor: (Boolean, Boolean) -> Boolean
!~Lnot: (Boolean) -> Boolean
<~Lt: (Integer, Integer) -> Boolean
-~Sub: (Integer, Integer) -> Integer
<=~Le: (Integer, Integer) -> Boolean
>~Gt: (Integer, Integer) -> Boolean
~~Bwnot: (Integer) -> Integer
%~Mod: (Integer, Integer) -> Integer
&~Bwand: (Integer, Integer) -> Integer
+~Add: (Integer, Integer) -> Integer
&&~Land: (Boolean, Boolean) -> Boolean


The following domains are used:

Boolean, Integer


R is empty.

The integer pair graph contains the following rules and edges:
(0): 917_0_MAIN_LOAD(x1[0], x2[0], x0[0]) → COND_917_0_MAIN_LOAD(x2[0] >= 0 && x2[0] <= x0[0] && x1[0] > x0[0], x1[0], x2[0], x0[0])
(1): COND_917_0_MAIN_LOAD(TRUE, x1[1], x2[1], x0[1]) → 917_0_MAIN_LOAD(x1[1], x2[1] + 1, x0[1])
(2): 917_0_MAIN_LOAD(x1[2], x2[2], x0[2]) → COND_917_0_MAIN_LOAD1(x2[2] > x0[2] && x1[2] > x0[2] && x0[2] >= 0, x1[2], x2[2], x0[2])
(3): COND_917_0_MAIN_LOAD1(TRUE, x1[3], x2[3], x0[3]) → 917_0_MAIN_LOAD(x1[3], x2[3], x0[3] + 1)

(0) -> (1), if ((x2[0] >= 0 && x2[0] <= x0[0] && x1[0] > x0[0]* TRUE)∧(x1[0]* x1[1])∧(x2[0]* x2[1])∧(x0[0]* x0[1]))


(1) -> (0), if ((x1[1]* x1[0])∧(x2[1] + 1* x2[0])∧(x0[1]* x0[0]))


(1) -> (2), if ((x1[1]* x1[2])∧(x2[1] + 1* x2[2])∧(x0[1]* x0[2]))


(2) -> (3), if ((x2[2] > x0[2] && x1[2] > x0[2] && x0[2] >= 0* TRUE)∧(x1[2]* x1[3])∧(x2[2]* x2[3])∧(x0[2]* x0[3]))


(3) -> (0), if ((x1[3]* x1[0])∧(x2[3]* x2[0])∧(x0[3] + 1* x0[0]))


(3) -> (2), if ((x1[3]* x1[2])∧(x2[3]* x2[2])∧(x0[3] + 1* x0[2]))



The set Q is empty.

(5) IDPNonInfProof (SOUND transformation)

The constraints were generated the following way:
The DP Problem is simplified using the Induction Calculus [NONINF] with the following steps:
Note that final constraints are written in bold face.


For Pair 917_0_MAIN_LOAD(x1, x2, x0) → COND_917_0_MAIN_LOAD(&&(&&(>=(x2, 0), <=(x2, x0)), >(x1, x0)), x1, x2, x0) the following chains were created:
  • We consider the chain 917_0_MAIN_LOAD(x1[0], x2[0], x0[0]) → COND_917_0_MAIN_LOAD(&&(&&(>=(x2[0], 0), <=(x2[0], x0[0])), >(x1[0], x0[0])), x1[0], x2[0], x0[0]), COND_917_0_MAIN_LOAD(TRUE, x1[1], x2[1], x0[1]) → 917_0_MAIN_LOAD(x1[1], +(x2[1], 1), x0[1]) which results in the following constraint:

    (1)    (&&(&&(>=(x2[0], 0), <=(x2[0], x0[0])), >(x1[0], x0[0]))=TRUEx1[0]=x1[1]x2[0]=x2[1]x0[0]=x0[1]917_0_MAIN_LOAD(x1[0], x2[0], x0[0])≥NonInfC∧917_0_MAIN_LOAD(x1[0], x2[0], x0[0])≥COND_917_0_MAIN_LOAD(&&(&&(>=(x2[0], 0), <=(x2[0], x0[0])), >(x1[0], x0[0])), x1[0], x2[0], x0[0])∧(UIncreasing(COND_917_0_MAIN_LOAD(&&(&&(>=(x2[0], 0), <=(x2[0], x0[0])), >(x1[0], x0[0])), x1[0], x2[0], x0[0])), ≥))



    We simplified constraint (1) using rules (IV), (IDP_BOOLEAN) which results in the following new constraint:

    (2)    (>(x1[0], x0[0])=TRUE>=(x2[0], 0)=TRUE<=(x2[0], x0[0])=TRUE917_0_MAIN_LOAD(x1[0], x2[0], x0[0])≥NonInfC∧917_0_MAIN_LOAD(x1[0], x2[0], x0[0])≥COND_917_0_MAIN_LOAD(&&(&&(>=(x2[0], 0), <=(x2[0], x0[0])), >(x1[0], x0[0])), x1[0], x2[0], x0[0])∧(UIncreasing(COND_917_0_MAIN_LOAD(&&(&&(>=(x2[0], 0), <=(x2[0], x0[0])), >(x1[0], x0[0])), x1[0], x2[0], x0[0])), ≥))



    We simplified constraint (2) using rule (POLY_CONSTRAINTS) which results in the following new constraint:

    (3)    (x1[0] + [-1] + [-1]x0[0] ≥ 0∧x2[0] ≥ 0∧x0[0] + [-1]x2[0] ≥ 0 ⇒ (UIncreasing(COND_917_0_MAIN_LOAD(&&(&&(>=(x2[0], 0), <=(x2[0], x0[0])), >(x1[0], x0[0])), x1[0], x2[0], x0[0])), ≥)∧[(-1)bni_21 + (-1)Bound*bni_21] + [(-1)bni_21]x2[0] + [bni_21]x1[0] ≥ 0∧[(-1)bso_22] ≥ 0)



    We simplified constraint (3) using rule (IDP_POLY_SIMPLIFY) which results in the following new constraint:

    (4)    (x1[0] + [-1] + [-1]x0[0] ≥ 0∧x2[0] ≥ 0∧x0[0] + [-1]x2[0] ≥ 0 ⇒ (UIncreasing(COND_917_0_MAIN_LOAD(&&(&&(>=(x2[0], 0), <=(x2[0], x0[0])), >(x1[0], x0[0])), x1[0], x2[0], x0[0])), ≥)∧[(-1)bni_21 + (-1)Bound*bni_21] + [(-1)bni_21]x2[0] + [bni_21]x1[0] ≥ 0∧[(-1)bso_22] ≥ 0)



    We simplified constraint (4) using rule (POLY_REMOVE_MIN_MAX) which results in the following new constraint:

    (5)    (x1[0] + [-1] + [-1]x0[0] ≥ 0∧x2[0] ≥ 0∧x0[0] + [-1]x2[0] ≥ 0 ⇒ (UIncreasing(COND_917_0_MAIN_LOAD(&&(&&(>=(x2[0], 0), <=(x2[0], x0[0])), >(x1[0], x0[0])), x1[0], x2[0], x0[0])), ≥)∧[(-1)bni_21 + (-1)Bound*bni_21] + [(-1)bni_21]x2[0] + [bni_21]x1[0] ≥ 0∧[(-1)bso_22] ≥ 0)



    We simplified constraint (5) using rule (IDP_SMT_SPLIT) which results in the following new constraint:

    (6)    (x1[0] ≥ 0∧x2[0] ≥ 0∧x0[0] + [-1]x2[0] ≥ 0 ⇒ (UIncreasing(COND_917_0_MAIN_LOAD(&&(&&(>=(x2[0], 0), <=(x2[0], x0[0])), >(x1[0], x0[0])), x1[0], x2[0], x0[0])), ≥)∧[(-1)Bound*bni_21] + [bni_21]x0[0] + [(-1)bni_21]x2[0] + [bni_21]x1[0] ≥ 0∧[(-1)bso_22] ≥ 0)



    We simplified constraint (6) using rule (IDP_SMT_SPLIT) which results in the following new constraint:

    (7)    (x1[0] ≥ 0∧x2[0] ≥ 0∧x0[0] ≥ 0 ⇒ (UIncreasing(COND_917_0_MAIN_LOAD(&&(&&(>=(x2[0], 0), <=(x2[0], x0[0])), >(x1[0], x0[0])), x1[0], x2[0], x0[0])), ≥)∧[(-1)Bound*bni_21] + [bni_21]x0[0] + [bni_21]x1[0] ≥ 0∧[(-1)bso_22] ≥ 0)







For Pair COND_917_0_MAIN_LOAD(TRUE, x1, x2, x0) → 917_0_MAIN_LOAD(x1, +(x2, 1), x0) the following chains were created:
  • We consider the chain 917_0_MAIN_LOAD(x1[0], x2[0], x0[0]) → COND_917_0_MAIN_LOAD(&&(&&(>=(x2[0], 0), <=(x2[0], x0[0])), >(x1[0], x0[0])), x1[0], x2[0], x0[0]), COND_917_0_MAIN_LOAD(TRUE, x1[1], x2[1], x0[1]) → 917_0_MAIN_LOAD(x1[1], +(x2[1], 1), x0[1]), 917_0_MAIN_LOAD(x1[0], x2[0], x0[0]) → COND_917_0_MAIN_LOAD(&&(&&(>=(x2[0], 0), <=(x2[0], x0[0])), >(x1[0], x0[0])), x1[0], x2[0], x0[0]) which results in the following constraint:

    (8)    (&&(&&(>=(x2[0], 0), <=(x2[0], x0[0])), >(x1[0], x0[0]))=TRUEx1[0]=x1[1]x2[0]=x2[1]x0[0]=x0[1]x1[1]=x1[0]1+(x2[1], 1)=x2[0]1x0[1]=x0[0]1COND_917_0_MAIN_LOAD(TRUE, x1[1], x2[1], x0[1])≥NonInfC∧COND_917_0_MAIN_LOAD(TRUE, x1[1], x2[1], x0[1])≥917_0_MAIN_LOAD(x1[1], +(x2[1], 1), x0[1])∧(UIncreasing(917_0_MAIN_LOAD(x1[1], +(x2[1], 1), x0[1])), ≥))



    We simplified constraint (8) using rules (III), (IV), (IDP_BOOLEAN) which results in the following new constraint:

    (9)    (>(x1[0], x0[0])=TRUE>=(x2[0], 0)=TRUE<=(x2[0], x0[0])=TRUECOND_917_0_MAIN_LOAD(TRUE, x1[0], x2[0], x0[0])≥NonInfC∧COND_917_0_MAIN_LOAD(TRUE, x1[0], x2[0], x0[0])≥917_0_MAIN_LOAD(x1[0], +(x2[0], 1), x0[0])∧(UIncreasing(917_0_MAIN_LOAD(x1[1], +(x2[1], 1), x0[1])), ≥))



    We simplified constraint (9) using rule (POLY_CONSTRAINTS) which results in the following new constraint:

    (10)    (x1[0] + [-1] + [-1]x0[0] ≥ 0∧x2[0] ≥ 0∧x0[0] + [-1]x2[0] ≥ 0 ⇒ (UIncreasing(917_0_MAIN_LOAD(x1[1], +(x2[1], 1), x0[1])), ≥)∧[(-1)bni_23 + (-1)Bound*bni_23] + [(-1)bni_23]x2[0] + [bni_23]x1[0] ≥ 0∧[1 + (-1)bso_24] ≥ 0)



    We simplified constraint (10) using rule (IDP_POLY_SIMPLIFY) which results in the following new constraint:

    (11)    (x1[0] + [-1] + [-1]x0[0] ≥ 0∧x2[0] ≥ 0∧x0[0] + [-1]x2[0] ≥ 0 ⇒ (UIncreasing(917_0_MAIN_LOAD(x1[1], +(x2[1], 1), x0[1])), ≥)∧[(-1)bni_23 + (-1)Bound*bni_23] + [(-1)bni_23]x2[0] + [bni_23]x1[0] ≥ 0∧[1 + (-1)bso_24] ≥ 0)



    We simplified constraint (11) using rule (POLY_REMOVE_MIN_MAX) which results in the following new constraint:

    (12)    (x1[0] + [-1] + [-1]x0[0] ≥ 0∧x2[0] ≥ 0∧x0[0] + [-1]x2[0] ≥ 0 ⇒ (UIncreasing(917_0_MAIN_LOAD(x1[1], +(x2[1], 1), x0[1])), ≥)∧[(-1)bni_23 + (-1)Bound*bni_23] + [(-1)bni_23]x2[0] + [bni_23]x1[0] ≥ 0∧[1 + (-1)bso_24] ≥ 0)



    We simplified constraint (12) using rule (IDP_SMT_SPLIT) which results in the following new constraint:

    (13)    (x1[0] ≥ 0∧x2[0] ≥ 0∧x0[0] + [-1]x2[0] ≥ 0 ⇒ (UIncreasing(917_0_MAIN_LOAD(x1[1], +(x2[1], 1), x0[1])), ≥)∧[(-1)Bound*bni_23] + [bni_23]x0[0] + [(-1)bni_23]x2[0] + [bni_23]x1[0] ≥ 0∧[1 + (-1)bso_24] ≥ 0)



    We simplified constraint (13) using rule (IDP_SMT_SPLIT) which results in the following new constraint:

    (14)    (x1[0] ≥ 0∧x2[0] ≥ 0∧x0[0] ≥ 0 ⇒ (UIncreasing(917_0_MAIN_LOAD(x1[1], +(x2[1], 1), x0[1])), ≥)∧[(-1)Bound*bni_23] + [bni_23]x0[0] + [bni_23]x1[0] ≥ 0∧[1 + (-1)bso_24] ≥ 0)



  • We consider the chain 917_0_MAIN_LOAD(x1[0], x2[0], x0[0]) → COND_917_0_MAIN_LOAD(&&(&&(>=(x2[0], 0), <=(x2[0], x0[0])), >(x1[0], x0[0])), x1[0], x2[0], x0[0]), COND_917_0_MAIN_LOAD(TRUE, x1[1], x2[1], x0[1]) → 917_0_MAIN_LOAD(x1[1], +(x2[1], 1), x0[1]), 917_0_MAIN_LOAD(x1[2], x2[2], x0[2]) → COND_917_0_MAIN_LOAD1(&&(&&(>(x2[2], x0[2]), >(x1[2], x0[2])), >=(x0[2], 0)), x1[2], x2[2], x0[2]) which results in the following constraint:

    (15)    (&&(&&(>=(x2[0], 0), <=(x2[0], x0[0])), >(x1[0], x0[0]))=TRUEx1[0]=x1[1]x2[0]=x2[1]x0[0]=x0[1]x1[1]=x1[2]+(x2[1], 1)=x2[2]x0[1]=x0[2]COND_917_0_MAIN_LOAD(TRUE, x1[1], x2[1], x0[1])≥NonInfC∧COND_917_0_MAIN_LOAD(TRUE, x1[1], x2[1], x0[1])≥917_0_MAIN_LOAD(x1[1], +(x2[1], 1), x0[1])∧(UIncreasing(917_0_MAIN_LOAD(x1[1], +(x2[1], 1), x0[1])), ≥))



    We simplified constraint (15) using rules (III), (IV), (IDP_BOOLEAN) which results in the following new constraint:

    (16)    (>(x1[0], x0[0])=TRUE>=(x2[0], 0)=TRUE<=(x2[0], x0[0])=TRUECOND_917_0_MAIN_LOAD(TRUE, x1[0], x2[0], x0[0])≥NonInfC∧COND_917_0_MAIN_LOAD(TRUE, x1[0], x2[0], x0[0])≥917_0_MAIN_LOAD(x1[0], +(x2[0], 1), x0[0])∧(UIncreasing(917_0_MAIN_LOAD(x1[1], +(x2[1], 1), x0[1])), ≥))



    We simplified constraint (16) using rule (POLY_CONSTRAINTS) which results in the following new constraint:

    (17)    (x1[0] + [-1] + [-1]x0[0] ≥ 0∧x2[0] ≥ 0∧x0[0] + [-1]x2[0] ≥ 0 ⇒ (UIncreasing(917_0_MAIN_LOAD(x1[1], +(x2[1], 1), x0[1])), ≥)∧[(-1)bni_23 + (-1)Bound*bni_23] + [(-1)bni_23]x2[0] + [bni_23]x1[0] ≥ 0∧[1 + (-1)bso_24] ≥ 0)



    We simplified constraint (17) using rule (IDP_POLY_SIMPLIFY) which results in the following new constraint:

    (18)    (x1[0] + [-1] + [-1]x0[0] ≥ 0∧x2[0] ≥ 0∧x0[0] + [-1]x2[0] ≥ 0 ⇒ (UIncreasing(917_0_MAIN_LOAD(x1[1], +(x2[1], 1), x0[1])), ≥)∧[(-1)bni_23 + (-1)Bound*bni_23] + [(-1)bni_23]x2[0] + [bni_23]x1[0] ≥ 0∧[1 + (-1)bso_24] ≥ 0)



    We simplified constraint (18) using rule (POLY_REMOVE_MIN_MAX) which results in the following new constraint:

    (19)    (x1[0] + [-1] + [-1]x0[0] ≥ 0∧x2[0] ≥ 0∧x0[0] + [-1]x2[0] ≥ 0 ⇒ (UIncreasing(917_0_MAIN_LOAD(x1[1], +(x2[1], 1), x0[1])), ≥)∧[(-1)bni_23 + (-1)Bound*bni_23] + [(-1)bni_23]x2[0] + [bni_23]x1[0] ≥ 0∧[1 + (-1)bso_24] ≥ 0)



    We simplified constraint (19) using rule (IDP_SMT_SPLIT) which results in the following new constraint:

    (20)    (x1[0] ≥ 0∧x2[0] ≥ 0∧x0[0] + [-1]x2[0] ≥ 0 ⇒ (UIncreasing(917_0_MAIN_LOAD(x1[1], +(x2[1], 1), x0[1])), ≥)∧[(-1)Bound*bni_23] + [bni_23]x0[0] + [(-1)bni_23]x2[0] + [bni_23]x1[0] ≥ 0∧[1 + (-1)bso_24] ≥ 0)



    We simplified constraint (20) using rule (IDP_SMT_SPLIT) which results in the following new constraint:

    (21)    (x1[0] ≥ 0∧x2[0] ≥ 0∧x0[0] ≥ 0 ⇒ (UIncreasing(917_0_MAIN_LOAD(x1[1], +(x2[1], 1), x0[1])), ≥)∧[(-1)Bound*bni_23] + [bni_23]x0[0] + [bni_23]x1[0] ≥ 0∧[1 + (-1)bso_24] ≥ 0)







For Pair 917_0_MAIN_LOAD(x1, x2, x0) → COND_917_0_MAIN_LOAD1(&&(&&(>(x2, x0), >(x1, x0)), >=(x0, 0)), x1, x2, x0) the following chains were created:
  • We consider the chain 917_0_MAIN_LOAD(x1[2], x2[2], x0[2]) → COND_917_0_MAIN_LOAD1(&&(&&(>(x2[2], x0[2]), >(x1[2], x0[2])), >=(x0[2], 0)), x1[2], x2[2], x0[2]), COND_917_0_MAIN_LOAD1(TRUE, x1[3], x2[3], x0[3]) → 917_0_MAIN_LOAD(x1[3], x2[3], +(x0[3], 1)) which results in the following constraint:

    (22)    (&&(&&(>(x2[2], x0[2]), >(x1[2], x0[2])), >=(x0[2], 0))=TRUEx1[2]=x1[3]x2[2]=x2[3]x0[2]=x0[3]917_0_MAIN_LOAD(x1[2], x2[2], x0[2])≥NonInfC∧917_0_MAIN_LOAD(x1[2], x2[2], x0[2])≥COND_917_0_MAIN_LOAD1(&&(&&(>(x2[2], x0[2]), >(x1[2], x0[2])), >=(x0[2], 0)), x1[2], x2[2], x0[2])∧(UIncreasing(COND_917_0_MAIN_LOAD1(&&(&&(>(x2[2], x0[2]), >(x1[2], x0[2])), >=(x0[2], 0)), x1[2], x2[2], x0[2])), ≥))



    We simplified constraint (22) using rules (IV), (IDP_BOOLEAN) which results in the following new constraint:

    (23)    (>=(x0[2], 0)=TRUE>(x2[2], x0[2])=TRUE>(x1[2], x0[2])=TRUE917_0_MAIN_LOAD(x1[2], x2[2], x0[2])≥NonInfC∧917_0_MAIN_LOAD(x1[2], x2[2], x0[2])≥COND_917_0_MAIN_LOAD1(&&(&&(>(x2[2], x0[2]), >(x1[2], x0[2])), >=(x0[2], 0)), x1[2], x2[2], x0[2])∧(UIncreasing(COND_917_0_MAIN_LOAD1(&&(&&(>(x2[2], x0[2]), >(x1[2], x0[2])), >=(x0[2], 0)), x1[2], x2[2], x0[2])), ≥))



    We simplified constraint (23) using rule (POLY_CONSTRAINTS) which results in the following new constraint:

    (24)    (x0[2] ≥ 0∧x2[2] + [-1] + [-1]x0[2] ≥ 0∧x1[2] + [-1] + [-1]x0[2] ≥ 0 ⇒ (UIncreasing(COND_917_0_MAIN_LOAD1(&&(&&(>(x2[2], x0[2]), >(x1[2], x0[2])), >=(x0[2], 0)), x1[2], x2[2], x0[2])), ≥)∧[(-1)bni_25 + (-1)Bound*bni_25] + [(-1)bni_25]x2[2] + [bni_25]x1[2] ≥ 0∧[(-1)bso_26] ≥ 0)



    We simplified constraint (24) using rule (IDP_POLY_SIMPLIFY) which results in the following new constraint:

    (25)    (x0[2] ≥ 0∧x2[2] + [-1] + [-1]x0[2] ≥ 0∧x1[2] + [-1] + [-1]x0[2] ≥ 0 ⇒ (UIncreasing(COND_917_0_MAIN_LOAD1(&&(&&(>(x2[2], x0[2]), >(x1[2], x0[2])), >=(x0[2], 0)), x1[2], x2[2], x0[2])), ≥)∧[(-1)bni_25 + (-1)Bound*bni_25] + [(-1)bni_25]x2[2] + [bni_25]x1[2] ≥ 0∧[(-1)bso_26] ≥ 0)



    We simplified constraint (25) using rule (POLY_REMOVE_MIN_MAX) which results in the following new constraint:

    (26)    (x0[2] ≥ 0∧x2[2] + [-1] + [-1]x0[2] ≥ 0∧x1[2] + [-1] + [-1]x0[2] ≥ 0 ⇒ (UIncreasing(COND_917_0_MAIN_LOAD1(&&(&&(>(x2[2], x0[2]), >(x1[2], x0[2])), >=(x0[2], 0)), x1[2], x2[2], x0[2])), ≥)∧[(-1)bni_25 + (-1)Bound*bni_25] + [(-1)bni_25]x2[2] + [bni_25]x1[2] ≥ 0∧[(-1)bso_26] ≥ 0)



    We simplified constraint (26) using rule (IDP_SMT_SPLIT) which results in the following new constraint:

    (27)    (x0[2] ≥ 0∧x2[2] ≥ 0∧x1[2] + [-1] + [-1]x0[2] ≥ 0 ⇒ (UIncreasing(COND_917_0_MAIN_LOAD1(&&(&&(>(x2[2], x0[2]), >(x1[2], x0[2])), >=(x0[2], 0)), x1[2], x2[2], x0[2])), ≥)∧[(-2)bni_25 + (-1)Bound*bni_25] + [(-1)bni_25]x0[2] + [(-1)bni_25]x2[2] + [bni_25]x1[2] ≥ 0∧[(-1)bso_26] ≥ 0)



    We simplified constraint (27) using rule (IDP_SMT_SPLIT) which results in the following new constraint:

    (28)    (x0[2] ≥ 0∧x2[2] ≥ 0∧x1[2] ≥ 0 ⇒ (UIncreasing(COND_917_0_MAIN_LOAD1(&&(&&(>(x2[2], x0[2]), >(x1[2], x0[2])), >=(x0[2], 0)), x1[2], x2[2], x0[2])), ≥)∧[(-1)bni_25 + (-1)Bound*bni_25] + [(-1)bni_25]x2[2] + [bni_25]x1[2] ≥ 0∧[(-1)bso_26] ≥ 0)







For Pair COND_917_0_MAIN_LOAD1(TRUE, x1, x2, x0) → 917_0_MAIN_LOAD(x1, x2, +(x0, 1)) the following chains were created:
  • We consider the chain 917_0_MAIN_LOAD(x1[2], x2[2], x0[2]) → COND_917_0_MAIN_LOAD1(&&(&&(>(x2[2], x0[2]), >(x1[2], x0[2])), >=(x0[2], 0)), x1[2], x2[2], x0[2]), COND_917_0_MAIN_LOAD1(TRUE, x1[3], x2[3], x0[3]) → 917_0_MAIN_LOAD(x1[3], x2[3], +(x0[3], 1)), 917_0_MAIN_LOAD(x1[0], x2[0], x0[0]) → COND_917_0_MAIN_LOAD(&&(&&(>=(x2[0], 0), <=(x2[0], x0[0])), >(x1[0], x0[0])), x1[0], x2[0], x0[0]) which results in the following constraint:

    (29)    (&&(&&(>(x2[2], x0[2]), >(x1[2], x0[2])), >=(x0[2], 0))=TRUEx1[2]=x1[3]x2[2]=x2[3]x0[2]=x0[3]x1[3]=x1[0]x2[3]=x2[0]+(x0[3], 1)=x0[0]COND_917_0_MAIN_LOAD1(TRUE, x1[3], x2[3], x0[3])≥NonInfC∧COND_917_0_MAIN_LOAD1(TRUE, x1[3], x2[3], x0[3])≥917_0_MAIN_LOAD(x1[3], x2[3], +(x0[3], 1))∧(UIncreasing(917_0_MAIN_LOAD(x1[3], x2[3], +(x0[3], 1))), ≥))



    We simplified constraint (29) using rules (III), (IV), (IDP_BOOLEAN) which results in the following new constraint:

    (30)    (>=(x0[2], 0)=TRUE>(x2[2], x0[2])=TRUE>(x1[2], x0[2])=TRUECOND_917_0_MAIN_LOAD1(TRUE, x1[2], x2[2], x0[2])≥NonInfC∧COND_917_0_MAIN_LOAD1(TRUE, x1[2], x2[2], x0[2])≥917_0_MAIN_LOAD(x1[2], x2[2], +(x0[2], 1))∧(UIncreasing(917_0_MAIN_LOAD(x1[3], x2[3], +(x0[3], 1))), ≥))



    We simplified constraint (30) using rule (POLY_CONSTRAINTS) which results in the following new constraint:

    (31)    (x0[2] ≥ 0∧x2[2] + [-1] + [-1]x0[2] ≥ 0∧x1[2] + [-1] + [-1]x0[2] ≥ 0 ⇒ (UIncreasing(917_0_MAIN_LOAD(x1[3], x2[3], +(x0[3], 1))), ≥)∧[(-1)bni_27 + (-1)Bound*bni_27] + [(-1)bni_27]x2[2] + [bni_27]x1[2] ≥ 0∧[(-1)bso_28] ≥ 0)



    We simplified constraint (31) using rule (IDP_POLY_SIMPLIFY) which results in the following new constraint:

    (32)    (x0[2] ≥ 0∧x2[2] + [-1] + [-1]x0[2] ≥ 0∧x1[2] + [-1] + [-1]x0[2] ≥ 0 ⇒ (UIncreasing(917_0_MAIN_LOAD(x1[3], x2[3], +(x0[3], 1))), ≥)∧[(-1)bni_27 + (-1)Bound*bni_27] + [(-1)bni_27]x2[2] + [bni_27]x1[2] ≥ 0∧[(-1)bso_28] ≥ 0)



    We simplified constraint (32) using rule (POLY_REMOVE_MIN_MAX) which results in the following new constraint:

    (33)    (x0[2] ≥ 0∧x2[2] + [-1] + [-1]x0[2] ≥ 0∧x1[2] + [-1] + [-1]x0[2] ≥ 0 ⇒ (UIncreasing(917_0_MAIN_LOAD(x1[3], x2[3], +(x0[3], 1))), ≥)∧[(-1)bni_27 + (-1)Bound*bni_27] + [(-1)bni_27]x2[2] + [bni_27]x1[2] ≥ 0∧[(-1)bso_28] ≥ 0)



    We simplified constraint (33) using rule (IDP_SMT_SPLIT) which results in the following new constraint:

    (34)    (x0[2] ≥ 0∧x2[2] ≥ 0∧x1[2] + [-1] + [-1]x0[2] ≥ 0 ⇒ (UIncreasing(917_0_MAIN_LOAD(x1[3], x2[3], +(x0[3], 1))), ≥)∧[(-2)bni_27 + (-1)Bound*bni_27] + [(-1)bni_27]x0[2] + [(-1)bni_27]x2[2] + [bni_27]x1[2] ≥ 0∧[(-1)bso_28] ≥ 0)



    We simplified constraint (34) using rule (IDP_SMT_SPLIT) which results in the following new constraint:

    (35)    (x0[2] ≥ 0∧x2[2] ≥ 0∧x1[2] ≥ 0 ⇒ (UIncreasing(917_0_MAIN_LOAD(x1[3], x2[3], +(x0[3], 1))), ≥)∧[(-1)bni_27 + (-1)Bound*bni_27] + [(-1)bni_27]x2[2] + [bni_27]x1[2] ≥ 0∧[(-1)bso_28] ≥ 0)



  • We consider the chain 917_0_MAIN_LOAD(x1[2], x2[2], x0[2]) → COND_917_0_MAIN_LOAD1(&&(&&(>(x2[2], x0[2]), >(x1[2], x0[2])), >=(x0[2], 0)), x1[2], x2[2], x0[2]), COND_917_0_MAIN_LOAD1(TRUE, x1[3], x2[3], x0[3]) → 917_0_MAIN_LOAD(x1[3], x2[3], +(x0[3], 1)), 917_0_MAIN_LOAD(x1[2], x2[2], x0[2]) → COND_917_0_MAIN_LOAD1(&&(&&(>(x2[2], x0[2]), >(x1[2], x0[2])), >=(x0[2], 0)), x1[2], x2[2], x0[2]) which results in the following constraint:

    (36)    (&&(&&(>(x2[2], x0[2]), >(x1[2], x0[2])), >=(x0[2], 0))=TRUEx1[2]=x1[3]x2[2]=x2[3]x0[2]=x0[3]x1[3]=x1[2]1x2[3]=x2[2]1+(x0[3], 1)=x0[2]1COND_917_0_MAIN_LOAD1(TRUE, x1[3], x2[3], x0[3])≥NonInfC∧COND_917_0_MAIN_LOAD1(TRUE, x1[3], x2[3], x0[3])≥917_0_MAIN_LOAD(x1[3], x2[3], +(x0[3], 1))∧(UIncreasing(917_0_MAIN_LOAD(x1[3], x2[3], +(x0[3], 1))), ≥))



    We simplified constraint (36) using rules (III), (IV), (IDP_BOOLEAN) which results in the following new constraint:

    (37)    (>=(x0[2], 0)=TRUE>(x2[2], x0[2])=TRUE>(x1[2], x0[2])=TRUECOND_917_0_MAIN_LOAD1(TRUE, x1[2], x2[2], x0[2])≥NonInfC∧COND_917_0_MAIN_LOAD1(TRUE, x1[2], x2[2], x0[2])≥917_0_MAIN_LOAD(x1[2], x2[2], +(x0[2], 1))∧(UIncreasing(917_0_MAIN_LOAD(x1[3], x2[3], +(x0[3], 1))), ≥))



    We simplified constraint (37) using rule (POLY_CONSTRAINTS) which results in the following new constraint:

    (38)    (x0[2] ≥ 0∧x2[2] + [-1] + [-1]x0[2] ≥ 0∧x1[2] + [-1] + [-1]x0[2] ≥ 0 ⇒ (UIncreasing(917_0_MAIN_LOAD(x1[3], x2[3], +(x0[3], 1))), ≥)∧[(-1)bni_27 + (-1)Bound*bni_27] + [(-1)bni_27]x2[2] + [bni_27]x1[2] ≥ 0∧[(-1)bso_28] ≥ 0)



    We simplified constraint (38) using rule (IDP_POLY_SIMPLIFY) which results in the following new constraint:

    (39)    (x0[2] ≥ 0∧x2[2] + [-1] + [-1]x0[2] ≥ 0∧x1[2] + [-1] + [-1]x0[2] ≥ 0 ⇒ (UIncreasing(917_0_MAIN_LOAD(x1[3], x2[3], +(x0[3], 1))), ≥)∧[(-1)bni_27 + (-1)Bound*bni_27] + [(-1)bni_27]x2[2] + [bni_27]x1[2] ≥ 0∧[(-1)bso_28] ≥ 0)



    We simplified constraint (39) using rule (POLY_REMOVE_MIN_MAX) which results in the following new constraint:

    (40)    (x0[2] ≥ 0∧x2[2] + [-1] + [-1]x0[2] ≥ 0∧x1[2] + [-1] + [-1]x0[2] ≥ 0 ⇒ (UIncreasing(917_0_MAIN_LOAD(x1[3], x2[3], +(x0[3], 1))), ≥)∧[(-1)bni_27 + (-1)Bound*bni_27] + [(-1)bni_27]x2[2] + [bni_27]x1[2] ≥ 0∧[(-1)bso_28] ≥ 0)



    We simplified constraint (40) using rule (IDP_SMT_SPLIT) which results in the following new constraint:

    (41)    (x0[2] ≥ 0∧x2[2] ≥ 0∧x1[2] + [-1] + [-1]x0[2] ≥ 0 ⇒ (UIncreasing(917_0_MAIN_LOAD(x1[3], x2[3], +(x0[3], 1))), ≥)∧[(-2)bni_27 + (-1)Bound*bni_27] + [(-1)bni_27]x0[2] + [(-1)bni_27]x2[2] + [bni_27]x1[2] ≥ 0∧[(-1)bso_28] ≥ 0)



    We simplified constraint (41) using rule (IDP_SMT_SPLIT) which results in the following new constraint:

    (42)    (x0[2] ≥ 0∧x2[2] ≥ 0∧x1[2] ≥ 0 ⇒ (UIncreasing(917_0_MAIN_LOAD(x1[3], x2[3], +(x0[3], 1))), ≥)∧[(-1)bni_27 + (-1)Bound*bni_27] + [(-1)bni_27]x2[2] + [bni_27]x1[2] ≥ 0∧[(-1)bso_28] ≥ 0)







To summarize, we get the following constraints P for the following pairs.
  • 917_0_MAIN_LOAD(x1, x2, x0) → COND_917_0_MAIN_LOAD(&&(&&(>=(x2, 0), <=(x2, x0)), >(x1, x0)), x1, x2, x0)
    • (x1[0] ≥ 0∧x2[0] ≥ 0∧x0[0] ≥ 0 ⇒ (UIncreasing(COND_917_0_MAIN_LOAD(&&(&&(>=(x2[0], 0), <=(x2[0], x0[0])), >(x1[0], x0[0])), x1[0], x2[0], x0[0])), ≥)∧[(-1)Bound*bni_21] + [bni_21]x0[0] + [bni_21]x1[0] ≥ 0∧[(-1)bso_22] ≥ 0)

  • COND_917_0_MAIN_LOAD(TRUE, x1, x2, x0) → 917_0_MAIN_LOAD(x1, +(x2, 1), x0)
    • (x1[0] ≥ 0∧x2[0] ≥ 0∧x0[0] ≥ 0 ⇒ (UIncreasing(917_0_MAIN_LOAD(x1[1], +(x2[1], 1), x0[1])), ≥)∧[(-1)Bound*bni_23] + [bni_23]x0[0] + [bni_23]x1[0] ≥ 0∧[1 + (-1)bso_24] ≥ 0)
    • (x1[0] ≥ 0∧x2[0] ≥ 0∧x0[0] ≥ 0 ⇒ (UIncreasing(917_0_MAIN_LOAD(x1[1], +(x2[1], 1), x0[1])), ≥)∧[(-1)Bound*bni_23] + [bni_23]x0[0] + [bni_23]x1[0] ≥ 0∧[1 + (-1)bso_24] ≥ 0)

  • 917_0_MAIN_LOAD(x1, x2, x0) → COND_917_0_MAIN_LOAD1(&&(&&(>(x2, x0), >(x1, x0)), >=(x0, 0)), x1, x2, x0)
    • (x0[2] ≥ 0∧x2[2] ≥ 0∧x1[2] ≥ 0 ⇒ (UIncreasing(COND_917_0_MAIN_LOAD1(&&(&&(>(x2[2], x0[2]), >(x1[2], x0[2])), >=(x0[2], 0)), x1[2], x2[2], x0[2])), ≥)∧[(-1)bni_25 + (-1)Bound*bni_25] + [(-1)bni_25]x2[2] + [bni_25]x1[2] ≥ 0∧[(-1)bso_26] ≥ 0)

  • COND_917_0_MAIN_LOAD1(TRUE, x1, x2, x0) → 917_0_MAIN_LOAD(x1, x2, +(x0, 1))
    • (x0[2] ≥ 0∧x2[2] ≥ 0∧x1[2] ≥ 0 ⇒ (UIncreasing(917_0_MAIN_LOAD(x1[3], x2[3], +(x0[3], 1))), ≥)∧[(-1)bni_27 + (-1)Bound*bni_27] + [(-1)bni_27]x2[2] + [bni_27]x1[2] ≥ 0∧[(-1)bso_28] ≥ 0)
    • (x0[2] ≥ 0∧x2[2] ≥ 0∧x1[2] ≥ 0 ⇒ (UIncreasing(917_0_MAIN_LOAD(x1[3], x2[3], +(x0[3], 1))), ≥)∧[(-1)bni_27 + (-1)Bound*bni_27] + [(-1)bni_27]x2[2] + [bni_27]x1[2] ≥ 0∧[(-1)bso_28] ≥ 0)




The constraints for P> respective Pbound 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 Pbound.
Using the following integer polynomial ordering the resulting constraints can be solved
Polynomial interpretation over integers[POLO]:

POL(TRUE) = 0   
POL(FALSE) = 0   
POL(917_0_MAIN_LOAD(x1, x2, x3)) = [-1] + [-1]x2 + x1   
POL(COND_917_0_MAIN_LOAD(x1, x2, x3, x4)) = [-1] + [-1]x3 + x2 + [-1]x1   
POL(&&(x1, x2)) = 0   
POL(>=(x1, x2)) = [-1]   
POL(0) = 0   
POL(<=(x1, x2)) = [-1]   
POL(>(x1, x2)) = [-1]   
POL(+(x1, x2)) = x1 + x2   
POL(1) = [1]   
POL(COND_917_0_MAIN_LOAD1(x1, x2, x3, x4)) = [-1] + [-1]x3 + x2 + [-1]x1   

The following pairs are in P>:

COND_917_0_MAIN_LOAD(TRUE, x1[1], x2[1], x0[1]) → 917_0_MAIN_LOAD(x1[1], +(x2[1], 1), x0[1])

The following pairs are in Pbound:

917_0_MAIN_LOAD(x1[0], x2[0], x0[0]) → COND_917_0_MAIN_LOAD(&&(&&(>=(x2[0], 0), <=(x2[0], x0[0])), >(x1[0], x0[0])), x1[0], x2[0], x0[0])
COND_917_0_MAIN_LOAD(TRUE, x1[1], x2[1], x0[1]) → 917_0_MAIN_LOAD(x1[1], +(x2[1], 1), x0[1])

The following pairs are in P:

917_0_MAIN_LOAD(x1[0], x2[0], x0[0]) → COND_917_0_MAIN_LOAD(&&(&&(>=(x2[0], 0), <=(x2[0], x0[0])), >(x1[0], x0[0])), x1[0], x2[0], x0[0])
917_0_MAIN_LOAD(x1[2], x2[2], x0[2]) → COND_917_0_MAIN_LOAD1(&&(&&(>(x2[2], x0[2]), >(x1[2], x0[2])), >=(x0[2], 0)), x1[2], x2[2], x0[2])
COND_917_0_MAIN_LOAD1(TRUE, x1[3], x2[3], x0[3]) → 917_0_MAIN_LOAD(x1[3], x2[3], +(x0[3], 1))

At least the following rules have been oriented under context sensitive arithmetic replacement:

&&(TRUE, TRUE)1TRUE1
&&(TRUE, FALSE)1FALSE1
&&(FALSE, TRUE)1FALSE1
&&(FALSE, FALSE)1FALSE1

(6) Obligation:

IDP problem:
The following function symbols are pre-defined:
!=~Neq: (Integer, Integer) -> Boolean
*~Mul: (Integer, Integer) -> Integer
>=~Ge: (Integer, Integer) -> Boolean
-1~UnaryMinus: (Integer) -> Integer
|~Bwor: (Integer, Integer) -> Integer
/~Div: (Integer, Integer) -> Integer
=~Eq: (Integer, Integer) -> Boolean
~Bwxor: (Integer, Integer) -> Integer
||~Lor: (Boolean, Boolean) -> Boolean
!~Lnot: (Boolean) -> Boolean
<~Lt: (Integer, Integer) -> Boolean
-~Sub: (Integer, Integer) -> Integer
<=~Le: (Integer, Integer) -> Boolean
>~Gt: (Integer, Integer) -> Boolean
~~Bwnot: (Integer) -> Integer
%~Mod: (Integer, Integer) -> Integer
&~Bwand: (Integer, Integer) -> Integer
+~Add: (Integer, Integer) -> Integer
&&~Land: (Boolean, Boolean) -> Boolean


The following domains are used:

Boolean, Integer


R is empty.

The integer pair graph contains the following rules and edges:
(0): 917_0_MAIN_LOAD(x1[0], x2[0], x0[0]) → COND_917_0_MAIN_LOAD(x2[0] >= 0 && x2[0] <= x0[0] && x1[0] > x0[0], x1[0], x2[0], x0[0])
(2): 917_0_MAIN_LOAD(x1[2], x2[2], x0[2]) → COND_917_0_MAIN_LOAD1(x2[2] > x0[2] && x1[2] > x0[2] && x0[2] >= 0, x1[2], x2[2], x0[2])
(3): COND_917_0_MAIN_LOAD1(TRUE, x1[3], x2[3], x0[3]) → 917_0_MAIN_LOAD(x1[3], x2[3], x0[3] + 1)

(3) -> (0), if ((x1[3]* x1[0])∧(x2[3]* x2[0])∧(x0[3] + 1* x0[0]))


(3) -> (2), if ((x1[3]* x1[2])∧(x2[3]* x2[2])∧(x0[3] + 1* x0[2]))


(2) -> (3), if ((x2[2] > x0[2] && x1[2] > x0[2] && x0[2] >= 0* TRUE)∧(x1[2]* x1[3])∧(x2[2]* x2[3])∧(x0[2]* x0[3]))



The set Q is empty.

(7) IDependencyGraphProof (EQUIVALENT transformation)

The approximation of the Dependency Graph [LPAR04,FROCOS05,EDGSTAR] contains 1 SCC with 1 less node.

(8) Obligation:

IDP problem:
The following function symbols are pre-defined:
!=~Neq: (Integer, Integer) -> Boolean
*~Mul: (Integer, Integer) -> Integer
>=~Ge: (Integer, Integer) -> Boolean
-1~UnaryMinus: (Integer) -> Integer
|~Bwor: (Integer, Integer) -> Integer
/~Div: (Integer, Integer) -> Integer
=~Eq: (Integer, Integer) -> Boolean
~Bwxor: (Integer, Integer) -> Integer
||~Lor: (Boolean, Boolean) -> Boolean
!~Lnot: (Boolean) -> Boolean
<~Lt: (Integer, Integer) -> Boolean
-~Sub: (Integer, Integer) -> Integer
<=~Le: (Integer, Integer) -> Boolean
>~Gt: (Integer, Integer) -> Boolean
~~Bwnot: (Integer) -> Integer
%~Mod: (Integer, Integer) -> Integer
&~Bwand: (Integer, Integer) -> Integer
+~Add: (Integer, Integer) -> Integer
&&~Land: (Boolean, Boolean) -> Boolean


The following domains are used:

Integer, Boolean


R is empty.

The integer pair graph contains the following rules and edges:
(3): COND_917_0_MAIN_LOAD1(TRUE, x1[3], x2[3], x0[3]) → 917_0_MAIN_LOAD(x1[3], x2[3], x0[3] + 1)
(2): 917_0_MAIN_LOAD(x1[2], x2[2], x0[2]) → COND_917_0_MAIN_LOAD1(x2[2] > x0[2] && x1[2] > x0[2] && x0[2] >= 0, x1[2], x2[2], x0[2])

(3) -> (2), if ((x1[3]* x1[2])∧(x2[3]* x2[2])∧(x0[3] + 1* x0[2]))


(2) -> (3), if ((x2[2] > x0[2] && x1[2] > x0[2] && x0[2] >= 0* TRUE)∧(x1[2]* x1[3])∧(x2[2]* x2[3])∧(x0[2]* x0[3]))



The set Q is empty.

(9) IDPNonInfProof (SOUND transformation)

The constraints were generated the following way:
The DP Problem is simplified using the Induction Calculus [NONINF] with the following steps:
Note that final constraints are written in bold face.


For Pair COND_917_0_MAIN_LOAD1(TRUE, x1[3], x2[3], x0[3]) → 917_0_MAIN_LOAD(x1[3], x2[3], +(x0[3], 1)) the following chains were created:
  • We consider the chain 917_0_MAIN_LOAD(x1[2], x2[2], x0[2]) → COND_917_0_MAIN_LOAD1(&&(&&(>(x2[2], x0[2]), >(x1[2], x0[2])), >=(x0[2], 0)), x1[2], x2[2], x0[2]), COND_917_0_MAIN_LOAD1(TRUE, x1[3], x2[3], x0[3]) → 917_0_MAIN_LOAD(x1[3], x2[3], +(x0[3], 1)), 917_0_MAIN_LOAD(x1[2], x2[2], x0[2]) → COND_917_0_MAIN_LOAD1(&&(&&(>(x2[2], x0[2]), >(x1[2], x0[2])), >=(x0[2], 0)), x1[2], x2[2], x0[2]) which results in the following constraint:

    (1)    (&&(&&(>(x2[2], x0[2]), >(x1[2], x0[2])), >=(x0[2], 0))=TRUEx1[2]=x1[3]x2[2]=x2[3]x0[2]=x0[3]x1[3]=x1[2]1x2[3]=x2[2]1+(x0[3], 1)=x0[2]1COND_917_0_MAIN_LOAD1(TRUE, x1[3], x2[3], x0[3])≥NonInfC∧COND_917_0_MAIN_LOAD1(TRUE, x1[3], x2[3], x0[3])≥917_0_MAIN_LOAD(x1[3], x2[3], +(x0[3], 1))∧(UIncreasing(917_0_MAIN_LOAD(x1[3], x2[3], +(x0[3], 1))), ≥))



    We simplified constraint (1) using rules (III), (IV), (IDP_BOOLEAN) which results in the following new constraint:

    (2)    (>=(x0[2], 0)=TRUE>(x2[2], x0[2])=TRUE>(x1[2], x0[2])=TRUECOND_917_0_MAIN_LOAD1(TRUE, x1[2], x2[2], x0[2])≥NonInfC∧COND_917_0_MAIN_LOAD1(TRUE, x1[2], x2[2], x0[2])≥917_0_MAIN_LOAD(x1[2], x2[2], +(x0[2], 1))∧(UIncreasing(917_0_MAIN_LOAD(x1[3], x2[3], +(x0[3], 1))), ≥))



    We simplified constraint (2) using rule (POLY_CONSTRAINTS) which results in the following new constraint:

    (3)    (x0[2] ≥ 0∧x2[2] + [-1] + [-1]x0[2] ≥ 0∧x1[2] + [-1] + [-1]x0[2] ≥ 0 ⇒ (UIncreasing(917_0_MAIN_LOAD(x1[3], x2[3], +(x0[3], 1))), ≥)∧[(-1)bni_15 + (-1)Bound*bni_15] + [(-1)bni_15]x0[2] + [(2)bni_15]x2[2] ≥ 0∧[1 + (-1)bso_16] ≥ 0)



    We simplified constraint (3) using rule (IDP_POLY_SIMPLIFY) which results in the following new constraint:

    (4)    (x0[2] ≥ 0∧x2[2] + [-1] + [-1]x0[2] ≥ 0∧x1[2] + [-1] + [-1]x0[2] ≥ 0 ⇒ (UIncreasing(917_0_MAIN_LOAD(x1[3], x2[3], +(x0[3], 1))), ≥)∧[(-1)bni_15 + (-1)Bound*bni_15] + [(-1)bni_15]x0[2] + [(2)bni_15]x2[2] ≥ 0∧[1 + (-1)bso_16] ≥ 0)



    We simplified constraint (4) using rule (POLY_REMOVE_MIN_MAX) which results in the following new constraint:

    (5)    (x0[2] ≥ 0∧x2[2] + [-1] + [-1]x0[2] ≥ 0∧x1[2] + [-1] + [-1]x0[2] ≥ 0 ⇒ (UIncreasing(917_0_MAIN_LOAD(x1[3], x2[3], +(x0[3], 1))), ≥)∧[(-1)bni_15 + (-1)Bound*bni_15] + [(-1)bni_15]x0[2] + [(2)bni_15]x2[2] ≥ 0∧[1 + (-1)bso_16] ≥ 0)



    We simplified constraint (5) using rule (IDP_SMT_SPLIT) which results in the following new constraint:

    (6)    (x0[2] ≥ 0∧x2[2] ≥ 0∧x1[2] + [-1] + [-1]x0[2] ≥ 0 ⇒ (UIncreasing(917_0_MAIN_LOAD(x1[3], x2[3], +(x0[3], 1))), ≥)∧[bni_15 + (-1)Bound*bni_15] + [bni_15]x0[2] + [(2)bni_15]x2[2] ≥ 0∧[1 + (-1)bso_16] ≥ 0)



    We simplified constraint (6) using rule (IDP_SMT_SPLIT) which results in the following new constraint:

    (7)    (x0[2] ≥ 0∧x2[2] ≥ 0∧x1[2] ≥ 0 ⇒ (UIncreasing(917_0_MAIN_LOAD(x1[3], x2[3], +(x0[3], 1))), ≥)∧[bni_15 + (-1)Bound*bni_15] + [bni_15]x0[2] + [(2)bni_15]x2[2] ≥ 0∧[1 + (-1)bso_16] ≥ 0)







For Pair 917_0_MAIN_LOAD(x1[2], x2[2], x0[2]) → COND_917_0_MAIN_LOAD1(&&(&&(>(x2[2], x0[2]), >(x1[2], x0[2])), >=(x0[2], 0)), x1[2], x2[2], x0[2]) the following chains were created:
  • We consider the chain 917_0_MAIN_LOAD(x1[2], x2[2], x0[2]) → COND_917_0_MAIN_LOAD1(&&(&&(>(x2[2], x0[2]), >(x1[2], x0[2])), >=(x0[2], 0)), x1[2], x2[2], x0[2]), COND_917_0_MAIN_LOAD1(TRUE, x1[3], x2[3], x0[3]) → 917_0_MAIN_LOAD(x1[3], x2[3], +(x0[3], 1)) which results in the following constraint:

    (8)    (&&(&&(>(x2[2], x0[2]), >(x1[2], x0[2])), >=(x0[2], 0))=TRUEx1[2]=x1[3]x2[2]=x2[3]x0[2]=x0[3]917_0_MAIN_LOAD(x1[2], x2[2], x0[2])≥NonInfC∧917_0_MAIN_LOAD(x1[2], x2[2], x0[2])≥COND_917_0_MAIN_LOAD1(&&(&&(>(x2[2], x0[2]), >(x1[2], x0[2])), >=(x0[2], 0)), x1[2], x2[2], x0[2])∧(UIncreasing(COND_917_0_MAIN_LOAD1(&&(&&(>(x2[2], x0[2]), >(x1[2], x0[2])), >=(x0[2], 0)), x1[2], x2[2], x0[2])), ≥))



    We simplified constraint (8) using rules (IV), (IDP_BOOLEAN) which results in the following new constraint:

    (9)    (>=(x0[2], 0)=TRUE>(x2[2], x0[2])=TRUE>(x1[2], x0[2])=TRUE917_0_MAIN_LOAD(x1[2], x2[2], x0[2])≥NonInfC∧917_0_MAIN_LOAD(x1[2], x2[2], x0[2])≥COND_917_0_MAIN_LOAD1(&&(&&(>(x2[2], x0[2]), >(x1[2], x0[2])), >=(x0[2], 0)), x1[2], x2[2], x0[2])∧(UIncreasing(COND_917_0_MAIN_LOAD1(&&(&&(>(x2[2], x0[2]), >(x1[2], x0[2])), >=(x0[2], 0)), x1[2], x2[2], x0[2])), ≥))



    We simplified constraint (9) using rule (POLY_CONSTRAINTS) which results in the following new constraint:

    (10)    (x0[2] ≥ 0∧x2[2] + [-1] + [-1]x0[2] ≥ 0∧x1[2] + [-1] + [-1]x0[2] ≥ 0 ⇒ (UIncreasing(COND_917_0_MAIN_LOAD1(&&(&&(>(x2[2], x0[2]), >(x1[2], x0[2])), >=(x0[2], 0)), x1[2], x2[2], x0[2])), ≥)∧[(-1)bni_17 + (-1)Bound*bni_17] + [(-1)bni_17]x0[2] + [(2)bni_17]x2[2] ≥ 0∧[(-1)bso_18] ≥ 0)



    We simplified constraint (10) using rule (IDP_POLY_SIMPLIFY) which results in the following new constraint:

    (11)    (x0[2] ≥ 0∧x2[2] + [-1] + [-1]x0[2] ≥ 0∧x1[2] + [-1] + [-1]x0[2] ≥ 0 ⇒ (UIncreasing(COND_917_0_MAIN_LOAD1(&&(&&(>(x2[2], x0[2]), >(x1[2], x0[2])), >=(x0[2], 0)), x1[2], x2[2], x0[2])), ≥)∧[(-1)bni_17 + (-1)Bound*bni_17] + [(-1)bni_17]x0[2] + [(2)bni_17]x2[2] ≥ 0∧[(-1)bso_18] ≥ 0)



    We simplified constraint (11) using rule (POLY_REMOVE_MIN_MAX) which results in the following new constraint:

    (12)    (x0[2] ≥ 0∧x2[2] + [-1] + [-1]x0[2] ≥ 0∧x1[2] + [-1] + [-1]x0[2] ≥ 0 ⇒ (UIncreasing(COND_917_0_MAIN_LOAD1(&&(&&(>(x2[2], x0[2]), >(x1[2], x0[2])), >=(x0[2], 0)), x1[2], x2[2], x0[2])), ≥)∧[(-1)bni_17 + (-1)Bound*bni_17] + [(-1)bni_17]x0[2] + [(2)bni_17]x2[2] ≥ 0∧[(-1)bso_18] ≥ 0)



    We simplified constraint (12) using rule (IDP_SMT_SPLIT) which results in the following new constraint:

    (13)    (x0[2] ≥ 0∧x2[2] ≥ 0∧x1[2] + [-1] + [-1]x0[2] ≥ 0 ⇒ (UIncreasing(COND_917_0_MAIN_LOAD1(&&(&&(>(x2[2], x0[2]), >(x1[2], x0[2])), >=(x0[2], 0)), x1[2], x2[2], x0[2])), ≥)∧[bni_17 + (-1)Bound*bni_17] + [bni_17]x0[2] + [(2)bni_17]x2[2] ≥ 0∧[(-1)bso_18] ≥ 0)



    We simplified constraint (13) using rule (IDP_SMT_SPLIT) which results in the following new constraint:

    (14)    (x0[2] ≥ 0∧x2[2] ≥ 0∧x1[2] ≥ 0 ⇒ (UIncreasing(COND_917_0_MAIN_LOAD1(&&(&&(>(x2[2], x0[2]), >(x1[2], x0[2])), >=(x0[2], 0)), x1[2], x2[2], x0[2])), ≥)∧[bni_17 + (-1)Bound*bni_17] + [bni_17]x0[2] + [(2)bni_17]x2[2] ≥ 0∧[(-1)bso_18] ≥ 0)







To summarize, we get the following constraints P for the following pairs.
  • COND_917_0_MAIN_LOAD1(TRUE, x1[3], x2[3], x0[3]) → 917_0_MAIN_LOAD(x1[3], x2[3], +(x0[3], 1))
    • (x0[2] ≥ 0∧x2[2] ≥ 0∧x1[2] ≥ 0 ⇒ (UIncreasing(917_0_MAIN_LOAD(x1[3], x2[3], +(x0[3], 1))), ≥)∧[bni_15 + (-1)Bound*bni_15] + [bni_15]x0[2] + [(2)bni_15]x2[2] ≥ 0∧[1 + (-1)bso_16] ≥ 0)

  • 917_0_MAIN_LOAD(x1[2], x2[2], x0[2]) → COND_917_0_MAIN_LOAD1(&&(&&(>(x2[2], x0[2]), >(x1[2], x0[2])), >=(x0[2], 0)), x1[2], x2[2], x0[2])
    • (x0[2] ≥ 0∧x2[2] ≥ 0∧x1[2] ≥ 0 ⇒ (UIncreasing(COND_917_0_MAIN_LOAD1(&&(&&(>(x2[2], x0[2]), >(x1[2], x0[2])), >=(x0[2], 0)), x1[2], x2[2], x0[2])), ≥)∧[bni_17 + (-1)Bound*bni_17] + [bni_17]x0[2] + [(2)bni_17]x2[2] ≥ 0∧[(-1)bso_18] ≥ 0)




The constraints for P> respective Pbound 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 Pbound.
Using the following integer polynomial ordering the resulting constraints can be solved
Polynomial interpretation over integers[POLO]:

POL(TRUE) = 0   
POL(FALSE) = [2]   
POL(COND_917_0_MAIN_LOAD1(x1, x2, x3, x4)) = [-1] + [-1]x4 + [2]x3 + [-1]x1   
POL(917_0_MAIN_LOAD(x1, x2, x3)) = [-1] + [-1]x3 + [2]x2   
POL(+(x1, x2)) = x1 + x2   
POL(1) = [1]   
POL(&&(x1, x2)) = 0   
POL(>(x1, x2)) = [-1]   
POL(>=(x1, x2)) = [-1]   
POL(0) = 0   

The following pairs are in P>:

COND_917_0_MAIN_LOAD1(TRUE, x1[3], x2[3], x0[3]) → 917_0_MAIN_LOAD(x1[3], x2[3], +(x0[3], 1))

The following pairs are in Pbound:

COND_917_0_MAIN_LOAD1(TRUE, x1[3], x2[3], x0[3]) → 917_0_MAIN_LOAD(x1[3], x2[3], +(x0[3], 1))
917_0_MAIN_LOAD(x1[2], x2[2], x0[2]) → COND_917_0_MAIN_LOAD1(&&(&&(>(x2[2], x0[2]), >(x1[2], x0[2])), >=(x0[2], 0)), x1[2], x2[2], x0[2])

The following pairs are in P:

917_0_MAIN_LOAD(x1[2], x2[2], x0[2]) → COND_917_0_MAIN_LOAD1(&&(&&(>(x2[2], x0[2]), >(x1[2], x0[2])), >=(x0[2], 0)), x1[2], x2[2], x0[2])

At least the following rules have been oriented under context sensitive arithmetic replacement:

&&(TRUE, TRUE)1TRUE1
FALSE1&&(TRUE, FALSE)1
FALSE1&&(FALSE, TRUE)1
FALSE1&&(FALSE, FALSE)1

(10) Obligation:

IDP problem:
The following function symbols are pre-defined:
!=~Neq: (Integer, Integer) -> Boolean
*~Mul: (Integer, Integer) -> Integer
>=~Ge: (Integer, Integer) -> Boolean
-1~UnaryMinus: (Integer) -> Integer
|~Bwor: (Integer, Integer) -> Integer
/~Div: (Integer, Integer) -> Integer
=~Eq: (Integer, Integer) -> Boolean
~Bwxor: (Integer, Integer) -> Integer
||~Lor: (Boolean, Boolean) -> Boolean
!~Lnot: (Boolean) -> Boolean
<~Lt: (Integer, Integer) -> Boolean
-~Sub: (Integer, Integer) -> Integer
<=~Le: (Integer, Integer) -> Boolean
>~Gt: (Integer, Integer) -> Boolean
~~Bwnot: (Integer) -> Integer
%~Mod: (Integer, Integer) -> Integer
&~Bwand: (Integer, Integer) -> Integer
+~Add: (Integer, Integer) -> Integer
&&~Land: (Boolean, Boolean) -> Boolean


The following domains are used:

Boolean, Integer


R is empty.

The integer pair graph contains the following rules and edges:
(2): 917_0_MAIN_LOAD(x1[2], x2[2], x0[2]) → COND_917_0_MAIN_LOAD1(x2[2] > x0[2] && x1[2] > x0[2] && x0[2] >= 0, x1[2], x2[2], x0[2])


The set Q is empty.

(11) IDependencyGraphProof (EQUIVALENT transformation)

The approximation of the Dependency Graph [LPAR04,FROCOS05,EDGSTAR] contains 0 SCCs with 1 less node.

(12) TRUE