/export/starexec/sandbox2/solver/bin/starexec_run_standard /export/starexec/sandbox2/benchmark/theBenchmark.jar /export/starexec/sandbox2/output/output_files


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YES
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# AProVE Commit ID: 48fb2092695e11cc9f56e44b17a92a5f88ffb256 marcel 20180622 unpublished dirty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 proven:

(0) Bare JBC problem
(1) BareJBCToJBCProof [EQUIVALENT, 96 ms]
(2) JBC problem
(3) JBCToGraph [EQUIVALENT, 196 ms]
(4) JBCTerminationGraph
(5) TerminationGraphToSCCProof [SOUND, 9 ms]
(6) TRUE


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(0)
Obligation:
need to prove termination of the following program:
public class FactSum {
    public static int factorial(int n){
	if (n <=0) return 1;
	else return n*factorial(n-1);    
    }

    public static int doSum(int n){
	int s=0;
	while (n >= 0) {
	    s = s + factorial(n);
	    n=n-1;
	}
	return s;
    }

    public static void main(String[] args) {
	doSum(10);
    }
}



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(1) BareJBCToJBCProof (EQUIVALENT)
initialized classpath
----------------------------------------

(2)
Obligation:
need to prove termination of the following program:
public class FactSum {
    public static int factorial(int n){
	if (n <=0) return 1;
	else return n*factorial(n-1);    
    }

    public static int doSum(int n){
	int s=0;
	while (n >= 0) {
	    s = s + factorial(n);
	    n=n-1;
	}
	return s;
    }

    public static void main(String[] args) {
	doSum(10);
    }
}



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(3) JBCToGraph (EQUIVALENT)
Constructed TerminationGraph.
----------------------------------------

(4)
Obligation:
Termination Graph based on JBC Program:
FactSum.main([Ljava/lang/String;)V: Graph of 682 nodes with 0 SCCs.





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(5) TerminationGraphToSCCProof (SOUND)
Proven termination by absence of SCCs
----------------------------------------

(6)
TRUE