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C_Integer 2019-03-28 22.15 pair #432271465
details
property
value
status
complete
benchmark
Bangalore_false-termination.c
ran by
Akihisa Yamada
cpu timeout
1200 seconds
wallclock timeout
300 seconds
memory limit
137438953472 bytes
execution host
n066.star.cs.uiowa.edu
space
Ton_Chanh_15
run statistics
property
value
solver
AProVE
configuration
c
runtime (wallclock)
2.86336 seconds
cpu usage
8.1779
user time
7.7695
system time
0.408394
max virtual memory
1.9405472E7
max residence set size
560532.0
stage attributes
key
value
starexec-result
NO
output
7.57/2.76 NO 7.57/2.79 proof of /export/starexec/sandbox/benchmark/theBenchmark.c 7.57/2.79 # AProVE Commit ID: 48fb2092695e11cc9f56e44b17a92a5f88ffb256 marcel 20180622 unpublished dirty 7.57/2.79 7.57/2.79 7.57/2.79 Termination of the given C Problem could be disproven: 7.57/2.79 7.57/2.79 (0) C Problem 7.57/2.79 (1) CToLLVMProof [EQUIVALENT, 153 ms] 7.57/2.79 (2) LLVM problem 7.57/2.79 (3) LLVMToTerminationGraphProof [EQUIVALENT, 377 ms] 7.57/2.79 (4) LLVM Symbolic Execution Graph 7.57/2.79 (5) LLVMNonterminationProof [COMPLETE, 42 ms] 7.57/2.79 (6) NO 7.57/2.79 7.57/2.79 7.57/2.79 ---------------------------------------- 7.57/2.79 7.57/2.79 (0) 7.57/2.79 Obligation: 7.57/2.79 c file /export/starexec/sandbox/benchmark/theBenchmark.c 7.57/2.79 ---------------------------------------- 7.57/2.79 7.57/2.79 (1) CToLLVMProof (EQUIVALENT) 7.57/2.79 Compiled c-file /export/starexec/sandbox/benchmark/theBenchmark.c to LLVM. 7.57/2.79 ---------------------------------------- 7.57/2.79 7.57/2.79 (2) 7.57/2.79 Obligation: 7.57/2.79 LLVM Problem 7.57/2.79 7.57/2.79 Aliases: 7.57/2.79 7.57/2.79 Data layout: 7.57/2.79 7.57/2.79 "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" 7.57/2.79 7.57/2.79 Machine: 7.57/2.79 7.57/2.79 "x86_64-pc-linux-gnu" 7.57/2.79 7.57/2.79 Type definitions: 7.57/2.79 7.57/2.79 Global variables: 7.57/2.79 7.57/2.79 Function declarations and definitions: 7.57/2.79 7.57/2.79 *BasicFunctionTypename: "__VERIFIER_nondet_int" returnParam: i32 parameters: () variableLength: false visibilityType: DEFAULT callingConvention: ccc 7.57/2.79 *BasicFunctionTypename: "main" linkageType: EXTERNALLY_VISIBLE returnParam: i32 parameters: () variableLength: false visibilityType: DEFAULT callingConvention: ccc 7.57/2.79 0: 7.57/2.79 %1 = alloca i32, align 4 7.57/2.79 %x = alloca i32, align 4 7.57/2.79 %y = alloca i32, align 4 7.57/2.79 store 0, %1 7.57/2.79 %2 = call i32 @__VERIFIER_nondet_int() 7.57/2.79 store %2, %x 7.57/2.79 %3 = call i32 @__VERIFIER_nondet_int() 7.57/2.79 store %3, %y 7.57/2.79 %4 = load %y 7.57/2.79 %5 = icmp slt %4 1 7.57/2.79 br %5, %6, %15 7.57/2.79 6: 7.57/2.79 br %7 7.57/2.79 7: 7.57/2.79 %8 = load %x 7.57/2.79 %9 = icmp sge %8 0 7.57/2.79 br %9, %10, %14 7.57/2.79 10: 7.57/2.79 %11 = load %x 7.57/2.79 %12 = load %y 7.57/2.79 %13 = sub %11 %12 7.57/2.79 store %13, %x 7.57/2.79 br %7 7.57/2.79 14: 7.57/2.79 br %15 7.57/2.79 15: 7.57/2.79 ret 0 7.57/2.79 7.57/2.79 7.57/2.79 Analyze Termination of all function calls matching the pattern: 7.57/2.79 main() 7.57/2.79 ---------------------------------------- 7.57/2.79 7.57/2.79 (3) LLVMToTerminationGraphProof (EQUIVALENT) 7.57/2.79 Constructed symbolic execution graph for LLVM program and proved memory safety. 7.57/2.79 ---------------------------------------- 7.57/2.79 7.57/2.79 (4) 7.57/2.79 Obligation: 7.57/2.79 SE Graph 7.57/2.79 ---------------------------------------- 7.57/2.79 7.57/2.79 (5) LLVMNonterminationProof (COMPLETE) 7.57/2.79 Proved nontermination with the following witness: 7.57/2.79 7.57/2.79 State #69 with references set to {}. 7.57/2.79 Nondeterministic instruction %1 = alloca i32, align 4 in node #69 yields value 9. 7.57/2.79 Nondeterministic instruction %x = alloca i32, align 4 in node #70 yields value 13. 7.57/2.79 Nondeterministic instruction %y = alloca i32, align 4 in node #71 yields value 1. 7.57/2.79 Nondeterministic instruction %2 = call i32 @__VERIFIER_nondet_int() in node #73 yields value 0.
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