Spaces
Explore
Communities
Statistics
Reports
Cluster
Status
Help
Java Bytec 64199 pair #381919507
details
property
value
status
complete
benchmark
even_rec.jar
ran by
Akihisa Yamada
cpu timeout
1200 seconds
wallclock timeout
300 seconds
memory limit
137438953472 bytes
execution host
n034.star.cs.uiowa.edu
space
Julia_12_recursive
run statistics
property
value
solver
AProVE
configuration
standard
runtime (wallclock)
2.27016496658 seconds
cpu usage
5.817659775
max memory
5.30395136E8
stage attributes
key
value
output-size
2657
starexec-result
NO
output
/export/starexec/sandbox2/solver/bin/starexec_run_standard /export/starexec/sandbox2/benchmark/theBenchmark.jar /export/starexec/sandbox2/output/output_files -------------------------------------------------------------------------------- NO proof of /export/starexec/sandbox2/benchmark/theBenchmark.jar # AProVE Commit ID: 48fb2092695e11cc9f56e44b17a92a5f88ffb256 marcel 20180622 unpublished dirty termination of the given Bare JBC problem could be disproven: (0) Bare JBC problem (1) BareJBCToJBCProof [EQUIVALENT, 96 ms] (2) JBC problem (3) JBCNonTerm [COMPLETE, 284 ms] (4) NO ---------------------------------------- (0) Obligation: need to prove termination of the following program: public class Even { public static boolean even(int i) { if (i == 0) return true; else if (i == 1) return false; else return even(i - 2); } public static void main(String[] args) { even(-1 * args.length); } } ---------------------------------------- (1) BareJBCToJBCProof (EQUIVALENT) initialized classpath ---------------------------------------- (2) Obligation: need to prove termination of the following program: public class Even { public static boolean even(int i) { if (i == 0) return true; else if (i == 1) return false; else return even(i - 2); } public static void main(String[] args) { even(-1 * args.length); } } ---------------------------------------- (3) JBCNonTerm (COMPLETE) Reached a loop using the following run: 0:<Even.main||0: push -1||#0: a2|| -> a2([java.lang.String...]): length 1 -->{java.lang.Object...} YES: (JL1) 1:<Even.main||1: load ADDR #0||#0: a2||-1> a2([java.lang.String...]): length 1 -->{java.lang.Object...} YES: (JL1) 2:<Even.main||2: arraylength|| - ||-1, a2> a2([java.lang.String...]): length 1 -->{java.lang.Object...} YES: (JL1) 3:<Even.main||3: MUL|| - ||-1, 1> YES: (JL1) 4:<Even.main||4: Even.even(I)Z|| - ||-1> YES: (JL1) 5:<Even.even||0: load INT #0||#0: -1|| -> YES: (JL1) Start state of loop: [i5(lv_0_0)] <Even.even||0: load INT #0||#0: i5|| -> i5: (-inf,0]{-inf,+inf} YES: (JL1) In the loop head node, references [i5] were interesting. All methods calls in the loop body are side-effect free, hence they can be ignored. By SMT, we could prove (initial_i5 <= 0 and (((path1_i5 = path1_i11 and path1_i16 = (path1_i11 - 2) and path1_i16 = res_i5 and path1_i5 = initial_i5) and (path1_i11 < 0 and path1_i11 < 1)) and ((res1_i5 = res1_i11 and res1_i16 = (res1_i11 - 2) and res_i5 = res1_i5) and !(res1_i11 < 0 and res1_i11 < 1))))
popout
output may be truncated. 'popout' for the full output.
job log
popout
actions
all output
return to Java Bytec 64199