Java_Bytecode 2019-04-01 06.50 pair #433315586

details

property	value
status	complete
benchmark	Exc.jar
ran by	Akihisa Yamada
cpu timeout	1200 seconds
wallclock timeout	300 seconds
memory limit	137438953472 bytes
execution host	n165.star.cs.uiowa.edu
space	Costa_Julia_09

run statistics

property	value
solver	AProVE
configuration	standard
runtime (wallclock)	1.90099 seconds
cpu usage	3.96608
user time	3.81452
system time	0.151557
max virtual memory	1.8279332E7
max residence set size	248496.0

stage attributes

key	value
starexec-result	YES

output

3.85/1.86	YES
3.85/1.87	proof of /export/starexec/sandbox2/benchmark/theBenchmark.jar
3.85/1.87	# AProVE Commit ID: 48fb2092695e11cc9f56e44b17a92a5f88ffb256 marcel 20180622 unpublished dirty
3.85/1.87	
3.85/1.87	
3.85/1.87	termination of the given Bare JBC problem could be proven:
3.85/1.87	
3.85/1.87	(0) Bare JBC problem
3.85/1.87	(1) BareJBCToJBCProof [EQUIVALENT, 95 ms]
3.85/1.87	(2) JBC problem
3.85/1.87	(3) JBCToGraph [EQUIVALENT, 162 ms]
3.85/1.87	(4) JBCTerminationGraph
3.85/1.87	(5) TerminationGraphToSCCProof [SOUND, 0 ms]
3.85/1.87	(6) TRUE
3.85/1.87	
3.85/1.87	
3.85/1.87	----------------------------------------
3.85/1.87	
3.85/1.87	(0)
3.85/1.87	Obligation:
3.85/1.87	need to prove termination of the following program:
3.85/1.87	/**
3.85/1.87	 * A loop that might potentially throw a <tt>NullPointerException</tt>
3.85/1.87	 * because of the instance field access <tt>exc.f</tt>. If that happened,
3.85/1.87	 * the loop would diverge since the exception handler does not include any
3.85/1.87	 * progress statement. However, Julia can prove that <tt>exc</tt> is not
3.85/1.87	 * <tt>null</tt> at the point where <tt>exc.f</tt> is accessed, so that
3.85/1.87	 * no exception can be thrown there. Hence the loop is proved to terminate.
3.85/1.87	 *
3.85/1.87	 * All calls terminate.
3.85/1.87	 *
3.85/1.87	 * Julia + BinTerm prove that all calls terminate.
3.85/1.87	 *
3.85/1.87	 * Note: without a preliminary nullness analysis, termination could not
3.85/1.87	 *       be proved.
3.85/1.87	 *
3.85/1.87	 * @author <A HREF="mailto:fausto.spoto@univr.it">Fausto Spoto</A>
3.85/1.87	 */
3.85/1.87	
3.85/1.87	public class Exc {
3.85/1.87	    private int f;
3.85/1.87	
3.85/1.87	    public static void main(String[] args) {
3.85/1.87		Exc exc = new Exc();
3.85/1.87		int i = 0;
3.85/1.87	
3.85/1.87		while (i < 20) {
3.85/1.87		    try {
3.85/1.87			if (i > 10) exc.f = 5;
3.85/1.87			i += 2;
3.85/1.87		    }
3.85/1.87		    catch (NullPointerException e) {
3.85/1.87		    }
3.85/1.87		}
3.85/1.87	    }
3.85/1.87	}
3.85/1.87	
3.85/1.87	
3.85/1.87	----------------------------------------
3.85/1.87	
3.85/1.87	(1) BareJBCToJBCProof (EQUIVALENT)
3.85/1.87	initialized classpath
3.85/1.87	----------------------------------------
3.85/1.87	
3.85/1.87	(2)
3.85/1.87	Obligation:
3.85/1.87	need to prove termination of the following program:
3.85/1.87	/**
3.85/1.87	 * A loop that might potentially throw a <tt>NullPointerException</tt>
3.85/1.87	 * because of the instance field access <tt>exc.f</tt>. If that happened,
3.85/1.87	 * the loop would diverge since the exception handler does not include any
3.85/1.87	 * progress statement. However, Julia can prove that <tt>exc</tt> is not
3.85/1.87	 * <tt>null</tt> at the point where <tt>exc.f</tt> is accessed, so that
3.85/1.87	 * no exception can be thrown there. Hence the loop is proved to terminate.
3.85/1.87	 *
3.85/1.87	 * All calls terminate.
3.85/1.87	 *
3.85/1.87	 * Julia + BinTerm prove that all calls terminate.
3.85/1.87	 *
3.85/1.87	 * Note: without a preliminary nullness analysis, termination could not
3.85/1.87	 *       be proved.
3.85/1.87	 *
3.85/1.87	 * @author <A HREF="mailto:fausto.spoto@univr.it">Fausto Spoto</A>
3.85/1.87	 */
3.85/1.87	
3.85/1.87	public class Exc {
3.85/1.87	    private int f;
3.85/1.87	
3.85/1.87	    public static void main(String[] args) {
3.85/1.87		Exc exc = new Exc();
3.85/1.87		int i = 0;
3.85/1.87	
3.85/1.87		while (i < 20) {
3.85/1.87		    try {
3.85/1.87			if (i > 10) exc.f = 5;
3.85/1.87			i += 2;
3.85/1.87		    }
3.85/1.87		    catch (NullPointerException e) {
3.85/1.87		    }
3.85/1.87		}

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