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C pair #487095028
details
property
value
status
complete
benchmark
svcomp_PodelskiRybalchenko-2004VMCAI-Ex2_true-alloca.c
ran by
Akihisa Yamada
cpu timeout
1200 seconds
wallclock timeout
300 seconds
memory limit
137438953472 bytes
execution host
n151.star.cs.uiowa.edu
space
AProVE_memory_alloca
run statistics
property
value
solver
AProVE
configuration
c
runtime (wallclock)
2.82504 seconds
cpu usage
14.2497
user time
13.6304
system time
0.619281
max virtual memory
1.9075152E7
max residence set size
500420.0
stage attributes
key
value
starexec-result
NO
output
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# AProVE Commit ID: 794c25de1cacf0d048858bcd21c9a779e1221865 marcel 20200619 unpublished dirty Termination of the given C Problem could be disproven: (0) C Problem (1) CToLLVMProof [EQUIVALENT, 155 ms] (2) LLVM problem (3) LLVMToTerminationGraphProof [EQUIVALENT, 445 ms] (4) LLVM Symbolic Execution Graph (5) LLVMNonterminationProof [COMPLETE, 134 ms] (6) NO ---------------------------------------- (0) Obligation: c file /export/starexec/sandbox2/benchmark/theBenchmark.c ---------------------------------------- (1) CToLLVMProof (EQUIVALENT) Compiled c-file /export/starexec/sandbox2/benchmark/theBenchmark.c to LLVM. ---------------------------------------- (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: false 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 8 store 0, %1 %2 = alloca i8, numElementsLit: 4 %3 = bitcast *i8 %2 to *i32 store %3, %x %4 = call i32 @__VERIFIER_nondet_int() %5 = load %x store %4, %5 br %6 6: %7 = load %x %8 = load %7 %9 = icmp sge %8 0 br %9, %10, %16 10: %11 = load %x %12 = load %11 %13 = mul 2 %12 %14 = add %13 10 %15 = load %x store %14, %15 br %6 16: ret 0 Analyze Termination of all function calls matching the pattern: main() ---------------------------------------- (3) LLVMToTerminationGraphProof (EQUIVALENT) Constructed symbolic execution graph for LLVM program and proved memory safety. ---------------------------------------- (4) Obligation: SE Graph ---------------------------------------- (5) LLVMNonterminationProof (COMPLETE) Proved nontermination with the following witness: State #69 with references set to {}. Nondeterministic instruction %1 = alloca i32, align 4 in node #69 yields value 17. Nondeterministic instruction %x = alloca *i32, align 8 in node #70 yields value 24. Nondeterministic instruction %2 = alloca i8, numElementsLit: 4 in node #72 yields value 12. Nondeterministic instruction %4 = call i32 @__VERIFIER_nondet_int() in node #75 yields value 0. ----------------------------------------
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