/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# AProVE Commit ID: 48fb2092695e11cc9f56e44b17a92a5f88ffb256 marcel 20180622 unpublished dirty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, 894 ms]
(4) LLVM Symbolic Execution Graph
(5) SymbolicExecutionGraphToSCCProof [SOUND, 0 ms]
(6) LLVM Symbolic Execution SCC
(7) SCC2IRS [SOUND, 28 ms]
(8) IntTRS
(9) IRS2T2 [EQUIVALENT, 0 ms]
(10) T2IntSys
(11) T2 [EQUIVALENT, 1315 ms]
(12) YES


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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_nondet_int" returnParam: i32 parameters: () variableLength: true visibilityType: DEFAULT callingConvention: ccc
*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
		%y = alloca i32, align 4
		store 0, %1
		%2 = call i32 (...)* @__VERIFIER_nondet_int()
		store %2, %x
		%3 = call i32 (...)* @__VERIFIER_nondet_int()
		store %3, %y
		br %4
	4:
		%5 = load %x
		%6 = icmp sgt %5 0
		br %6, %7, %13
	7:
		%8 = load %x
		%9 = load %y
		%10 = add %8 %9
		store %10, %x
		%11 = load %y
		%12 = add %11 -1
		store %12, %y
		br %4
	13:
		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) SymbolicExecutionGraphToSCCProof (SOUND)
Splitted symbolic execution graph to 1 SCC.
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(6)
Obligation:
SCC
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(7) SCC2IRS (SOUND)
Transformed LLVM symbolic execution graph SCC into a rewrite problem. Log: 
Generated rules. Obtained 13 rulesP rules:
f_123(v37, v38, v39, v40, v41, v45, 1, v42, v44, v46, v47, v48, v49, 0, 3, 4) -> f_124(v37, v38, v39, v40, v41, v45, 1, v42, v44, v46, v47, v48, v49, 0, 3, 4) :|: 0 < v45
f_124(v37, v38, v39, v40, v41, v45, 1, v42, v44, v46, v47, v48, v49, 0, 3, 4) -> f_126(v37, v38, v39, v40, v41, v45, 1, v42, v44, v46, v47, v48, v49, 0, 3, 4) :|: 0 = 0
f_126(v37, v38, v39, v40, v41, v45, 1, v42, v44, v46, v47, v48, v49, 0, 3, 4) -> f_128(v37, v38, v39, v40, v41, v45, 1, v42, v44, v46, v47, v48, v49, 0, 3, 4) :|: TRUE
f_128(v37, v38, v39, v40, v41, v45, 1, v42, v44, v46, v47, v48, v49, 0, 3, 4) -> f_130(v37, v38, v39, v40, v41, v45, 1, v44, v46, v47, v48, v49, 0, 3, 4) :|: 0 = 0
f_130(v37, v38, v39, v40, v41, v45, 1, v44, v46, v47, v48, v49, 0, 3, 4) -> f_131(v37, v38, v39, v40, v41, v45, 1, v46, v44, v47, v48, v49, 0, 3, 4) :|: 0 = 0
f_131(v37, v38, v39, v40, v41, v45, 1, v46, v44, v47, v48, v49, 0, 3, 4) -> f_132(v37, v38, v39, v40, v41, v45, 1, v46, v51, v44, v47, v48, v49, 0, 3, 4) :|: v51 = v45 + v46
f_132(v37, v38, v39, v40, v41, v45, 1, v46, v51, v44, v47, v48, v49, 0, 3, 4) -> f_133(v37, v38, v39, v40, v41, v45, 1, v46, v51, v44, v47, v48, v49, 0, 3, 4) :|: TRUE
f_133(v37, v38, v39, v40, v41, v45, 1, v46, v51, v44, v47, v48, v49, 0, 3, 4) -> f_134(v37, v38, v39, v40, v41, v45, 1, v46, v51, v47, v48, v49, 0, 3, 4) :|: 0 = 0
f_134(v37, v38, v39, v40, v41, v45, 1, v46, v51, v47, v48, v49, 0, 3, 4) -> f_135(v37, v38, v39, v40, v41, v45, 1, v46, v51, v53, v47, v48, v49, 0, 3, 4) :|: 1 + v53 = v46
f_135(v37, v38, v39, v40, v41, v45, 1, v46, v51, v53, v47, v48, v49, 0, 3, 4) -> f_136(v37, v38, v39, v40, v41, v45, 1, v46, v51, v53, v47, v48, v49, 0, 3, 4) :|: TRUE
f_136(v37, v38, v39, v40, v41, v45, 1, v46, v51, v53, v47, v48, v49, 0, 3, 4) -> f_137(v37, v38, v39, v40, v41, v45, 1, v46, v51, v53, v47, v48, v49, 0, 3, 4) :|: TRUE
f_137(v37, v38, v39, v40, v41, v45, 1, v46, v51, v53, v47, v48, v49, 0, 3, 4) -> f_122(v37, v38, v39, v40, v41, v45, 1, v46, v51, v53, v47, v48, v49, 0, 3, 4) :|: TRUE
f_122(v37, v38, v39, v40, v41, v42, 1, v44, v45, v46, v47, v48, v49, 0, 3, 4) -> f_123(v37, v38, v39, v40, v41, v45, 1, v42, v44, v46, v47, v48, v49, 0, 3, 4) :|: 0 = 0
Combined rules. Obtained 1 rulesP rules:
f_123(v37:0, v38:0, v39:0, v40:0, v41:0, v45:0, 1, v42:0, v44:0, 1 + v53:0, v47:0, v48:0, v49:0, 0, 3, 4) -> f_123(v37:0, v38:0, v39:0, v40:0, v41:0, v45:0 + (1 + v53:0), 1, v45:0, 1 + v53:0, v53:0, v47:0, v48:0, v49:0, 0, 3, 4) :|: v45:0 > 0
Filtered unneeded arguments:
   f_123(x1, x2, x3, x4, x5, x6, x7, x8, x9, x10, x11, x12, x13, x14, x15, x16) -> f_123(x6, x10)
Removed division, modulo operations, cleaned up constraints. Obtained 1 rules.P rules:
f_123(v45:0, sum~cons_1~v53:0) -> f_123(v45:0 + (1 + v53:0), v53:0) :|: v45:0 > 0 && sum~cons_1~v53:0 = 1 + v53:0

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(8)
Obligation:
Rules:
f_123(v45:0, sum~cons_1~v53:0) -> f_123(v45:0 + (1 + v53:0), v53:0) :|: v45:0 > 0 && sum~cons_1~v53:0 = 1 + v53:0

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(9) IRS2T2 (EQUIVALENT)
Transformed input IRS into an integer transition system.Used the following mapping from defined symbols to location IDs:

   (f_123_2,1)

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(10)
Obligation:
START: 0;

FROM: 0;
TO: 1;

FROM: 1;
oldX0 := x0;
oldX1 := x1;
oldX2 := oldX1 - 1;
assume(oldX0 > 0 && oldX1 = 1 + oldX2);
x0 := oldX0 + (1 + oldX2);
x1 := oldX1 - 1;
TO: 1;


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(11) T2 (EQUIVALENT)
No proof given by T2
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(12)
YES