/export/starexec/sandbox2/solver/bin/starexec_run_c /export/starexec/sandbox2/benchmark/theBenchmark.c /export/starexec/sandbox2/output/output_files


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YES
proof of /export/starexec/sandbox2/benchmark/theBenchmark.c
# AProVE Commit ID: 48fb2092695e11cc9f56e44b17a92a5f88ffb256 marcel 20180622 unpublished dirty


Termination of the given C Problem could be proven:

(0) C Problem
(1) CToLLVMProof [EQUIVALENT, 178 ms]
(2) LLVM problem
(3) LLVMToTerminationGraphProof [EQUIVALENT, 929 ms]
(4) LLVM Symbolic Execution Graph
(5) SymbolicExecutionGraphToLassoProof [EQUIVALENT, 0 ms]
(6) TRUE


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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: "__VERIFIER_error" returnParam: BasicVoidType parameters: () variableLength: true visibilityType: DEFAULT callingConvention: ccc
*BasicFunctionTypename: "fibo1" linkageType: EXTERNALLY_VISIBLE returnParam: i32 parameters: (n i32) variableLength: false visibilityType: DEFAULT callingConvention: ccc
	0:
		%1 = alloca i32, align 4
		%2 = alloca i32, align 4
		store %n, %2
		%3 = load %2
		%4 = icmp slt %3 1
		br %4, %5, %6
	5:
		store 0, %1
		br %18
	6:
		%7 = load %2
		%8 = icmp eq %7 1
		br %8, %9, %10
	9:
		store 1, %1
		br %18
	10:
		%11 = load %2
		%12 = sub %11 1
		%13 = call i32 @fibo2(i32 %12)
		%14 = load %2
		%15 = sub %14 2
		%16 = call i32 @fibo2(i32 %15)
		%17 = add %13 %16
		store %17, %1
		br %18
	18:
		%19 = load %1
		ret %19

*BasicFunctionTypename: "fibo2" linkageType: EXTERNALLY_VISIBLE returnParam: i32 parameters: (n i32) variableLength: false visibilityType: DEFAULT callingConvention: ccc
	0:
		%1 = alloca i32, align 4
		%2 = alloca i32, align 4
		store %n, %2
		%3 = load %2
		%4 = icmp slt %3 1
		br %4, %5, %6
	5:
		store 0, %1
		br %18
	6:
		%7 = load %2
		%8 = icmp eq %7 1
		br %8, %9, %10
	9:
		store 1, %1
		br %18
	10:
		%11 = load %2
		%12 = sub %11 1
		%13 = call i32 @fibo1(i32 %12)
		%14 = load %2
		%15 = sub %14 2
		%16 = call i32 @fibo1(i32 %15)
		%17 = add %13 %16
		store %17, %1
		br %18
	18:
		%19 = load %1
		ret %19

*BasicFunctionTypename: "main" linkageType: EXTERNALLY_VISIBLE returnParam: i32 parameters: () variableLength: false visibilityType: DEFAULT callingConvention: ccc
	0:
		%1 = alloca i32, align 4
		%x = alloca i32, align 4
		%result = alloca i32, align 4
		store 0, %1
		store 2, %x
		%2 = load %x
		%3 = call i32 @fibo1(i32 %2)
		store %3, %result
		%4 = load %result
		%5 = icmp eq %4 1
		br %5, %6, %8
	6:
		br %7
	7:
		Unnamed Call-Instruction = call BasicVoidType (...)* @__VERIFIER_error()
		br %8
	8:
		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) SymbolicExecutionGraphToLassoProof (EQUIVALENT)
Converted SEGraph to 0 independent lassos.
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(6)
TRUE