NO
proof of /export/starexec/sandbox2/benchmark/theBenchmark.c
# AProVE Commit ID: 794c25de1cacf0d048858bcd21c9a779e1221865 marcel 20200619 unpublished dirty


Termination of the given C Problem could be disproven:

(0) C Problem
(1) CToLLVMProof [EQUIVALENT, 173 ms]
(2) LLVM problem
(3) LLVMToTerminationGraphProof [EQUIVALENT, 517 ms]
(4) LLVM Symbolic Execution Graph
(5) LLVMNonterminationProof [COMPLETE, 246 ms]
(6) NO


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(0)
Obligation:
c file /export/starexec/sandbox2/benchmark/theBenchmark.c
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(1) CToLLVMProof (EQUIVALENT)
Compiled c-file /export/starexec/sandbox2/benchmark/theBenchmark.c to LLVM.
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(2)
Obligation:
LLVM Problem

Aliases:

Data layout:

"e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"

Machine:

"x86_64-pc-linux-gnu"

Type definitions:

Global variables:

Function declarations and definitions:

*BasicFunctionTypename: "main" linkageType: EXTERNALLY_VISIBLE returnParam: i32 parameters: () variableLength: false visibilityType: DEFAULT callingConvention: ccc
	0:
		%1 = alloca i32, align 4
		%choose = alloca i32, align 4
		%life = alloca i32, align 4
		%death = alloca i32, align 4
		%temp = alloca i32, align 4
		store 0, %1
		store 2, %choose
		store 13, %life
		store 17, %death
		br %2
	2:
		%3 = load %life
		%4 = load %death
		%5 = icmp slt %3 %4
		br %5, %6, %21
	6:
		%7 = load %death
		store %7, %temp
		%8 = load %life
		%9 = add %8 1
		store %9, %death
		%10 = load %temp
		store %10, %life
		%11 = load %choose
		%12 = load %life
		%13 = icmp slt %11 %12
		br %13, %18, %14
	14:
		%15 = load %choose
		%16 = load %death
		%17 = icmp slt %15 %16
		br %17, %18, %20
	18:
		%19 = load %choose
		store %19, %life
		br %20
	20:
		br %2
	21:
		ret 0


Analyze Termination of all function calls matching the pattern:
main()
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(3) LLVMToTerminationGraphProof (EQUIVALENT)
Constructed symbolic execution graph for LLVM program and proved memory safety.
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(4)
Obligation:
SE Graph
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(5) LLVMNonterminationProof (COMPLETE)
Proved nontermination with the following witness:

State #104 with references set to {}.
Nondeterministic instruction %1 = alloca i32, align 4 in node #104 yields value 17.
Nondeterministic instruction %choose = alloca i32, align 4 in node #105 yields value 13.
Nondeterministic instruction %life = alloca i32, align 4 in node #106 yields value 1.
Nondeterministic instruction %death = alloca i32, align 4 in node #107 yields value 9.
Nondeterministic instruction %temp = alloca i32, align 4 in node #108 yields value 5.

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(6)
NO