5.58/2.34	NO
5.58/2.36	proof of /export/starexec/sandbox/benchmark/theBenchmark.jar
5.58/2.36	# AProVE Commit ID: 48fb2092695e11cc9f56e44b17a92a5f88ffb256 marcel 20180622 unpublished dirty
5.58/2.36	
5.58/2.36	
5.58/2.36	termination of the given Bare JBC problem could be disproven:
5.58/2.36	
5.58/2.36	(0) Bare JBC problem
5.58/2.36	(1) BareJBCToJBCProof [EQUIVALENT, 95 ms]
5.58/2.36	(2) JBC problem
5.58/2.36	(3) JBCToGraph [EQUIVALENT, 281 ms]
5.58/2.36	(4) JBCTerminationGraph
5.58/2.36	(5) JBCNonTerm [COMPLETE, 119 ms]
5.58/2.36	(6) NO
5.58/2.36	
5.58/2.36	
5.58/2.36	----------------------------------------
5.58/2.36	
5.58/2.36	(0)
5.58/2.36	Obligation:
5.58/2.36	need to prove termination of the following program:
5.58/2.36	package simple.even;
5.58/2.36	
5.58/2.36	public class Even {
5.58/2.36		
5.58/2.36		// does not terminate for negative numbers
5.58/2.36		
5.58/2.36		public static boolean even(int i) {
5.58/2.36			while (i != 1 && i != 0) {
5.58/2.36				i = i-2;
5.58/2.36			}
5.58/2.36			return (i == 0);
5.58/2.36		}
5.58/2.36	}
5.58/2.36	
5.58/2.36	
5.58/2.36	package simple.even;
5.58/2.36	
5.58/2.36	public class Main {
5.58/2.36	
5.58/2.36		/**
5.58/2.36		 * @param args
5.58/2.36		 */
5.58/2.36		public static void main(String[] args) {
5.58/2.36		    int even = args[1].length();
5.58/2.36		    if (args[0].length() % 2 == 0) {
5.58/2.36		        even = -even;
5.58/2.36		    }
5.58/2.36			Even.even(even);
5.58/2.36	
5.58/2.36		}
5.58/2.36	
5.58/2.36	}
5.58/2.36	
5.58/2.36	
5.58/2.36	
5.58/2.36	----------------------------------------
5.58/2.36	
5.58/2.36	(1) BareJBCToJBCProof (EQUIVALENT)
5.58/2.36	initialized classpath
5.58/2.36	----------------------------------------
5.58/2.36	
5.58/2.36	(2)
5.58/2.36	Obligation:
5.58/2.36	need to prove termination of the following program:
5.58/2.36	package simple.even;
5.58/2.36	
5.58/2.36	public class Even {
5.58/2.36		
5.58/2.36		// does not terminate for negative numbers
5.58/2.36		
5.58/2.36		public static boolean even(int i) {
5.58/2.36			while (i != 1 && i != 0) {
5.58/2.36				i = i-2;
5.58/2.36			}
5.58/2.36			return (i == 0);
5.58/2.36		}
5.58/2.36	}
5.58/2.36	
5.58/2.36	
5.58/2.36	package simple.even;
5.58/2.36	
5.58/2.36	public class Main {
5.58/2.36	
5.58/2.36		/**
5.58/2.36		 * @param args
5.58/2.36		 */
5.58/2.36		public static void main(String[] args) {
5.58/2.36		    int even = args[1].length();
5.58/2.36		    if (args[0].length() % 2 == 0) {
5.58/2.36		        even = -even;
5.58/2.36		    }
5.58/2.36			Even.even(even);
5.58/2.36	
5.58/2.36		}
5.58/2.36	
5.58/2.36	}
5.58/2.36	
5.58/2.36	
5.58/2.36	
5.58/2.36	----------------------------------------
5.58/2.36	
5.58/2.36	(3) JBCToGraph (EQUIVALENT)
5.58/2.36	Constructed TerminationGraph.
5.58/2.36	----------------------------------------
5.58/2.36	
5.58/2.36	(4)
5.58/2.36	Obligation:
5.58/2.36	Termination Graph based on JBC Program:
5.58/2.36	simple.even.Main.main([Ljava/lang/String;)V: Graph of 143 nodes with 2 SCCs.
5.58/2.36	
5.58/2.36	
5.58/2.36	
5.58/2.36	
5.58/2.36	
5.58/2.36	----------------------------------------
5.58/2.36	
5.58/2.36	(5) JBCNonTerm (COMPLETE)
5.58/2.36	Reached a loop using the following run: 
5.58/2.36	
5.58/2.36	0:<simple.even.Main.main||0: load ADDR args||args: a2|| ->
5.58/2.36		o33!: String(count=0, hash=#, offset=0, value=o34?) -->{java.lang.Object...}
5.58/2.36		a2([java.lang.String...]): {o33, o15} -->{java.lang.Object...}
5.58/2.36		o15!: String(count=1, hash=#, offset=0, value=o16?) -->{java.lang.Object...}
5.58/2.36	o34:: [CHAR] -->{java.lang.Object...}
5.58/2.36	o16:: [CHAR] -->{java.lang.Object...}
5.58/2.36	a2-><-o34
5.58/2.36	a2-><-o33
5.58/2.36	a2-><-o16
5.58/2.36	a2-><-o15
5.58/2.36	YES:  (JL1)
5.58/2.36	1:<simple.even.Main.main||1: push 1||args: a2||a2>
5.58/2.36		o33!: String(count=0, hash=#, offset=0, value=o34?) -->{java.lang.Object...}
5.58/2.36		a2([java.lang.String...]): {o33, o15} -->{java.lang.Object...}
5.58/2.36		o15!: String(count=1, hash=#, offset=0, value=o16?) -->{java.lang.Object...}
5.58/2.36	o34:: [CHAR] -->{java.lang.Object...}
5.58/2.36	o16:: [CHAR] -->{java.lang.Object...}
5.58/2.36	a2-><-o34
5.58/2.36	a2-><-o33
5.58/2.36	a2-><-o16
5.58/2.36	a2-><-o15
5.58/2.36	YES:  (JL1)
5.58/2.36	2:<simple.even.Main.main||2: Read ADDR from array||args: a2||a2, 1>
5.58/2.36		o33!: String(count=0, hash=#, offset=0, value=o34?) -->{java.lang.Object...}
5.58/2.36		a2([java.lang.String...]): {o33, o15} -->{java.lang.Object...}
5.58/2.36		o15!: String(count=1, hash=#, offset=0, value=o16?) -->{java.lang.Object...}
5.58/2.36	o34:: [CHAR] -->{java.lang.Object...}
5.58/2.36	o16:: [CHAR] -->{java.lang.Object...}
5.58/2.36	a2-><-o34
5.58/2.36	a2-><-o33
5.58/2.36	a2-><-o16
5.58/2.36	a2-><-o15
5.58/2.36	YES:  (JL1)
5.58/2.36	3:<simple.even.Main.main||3: java.lang.String.length()I||args: a2||o15>
5.58/2.36		o33!: String(count=0, hash=#, offset=0, value=o34?) -->{java.lang.Object...}
5.58/2.36		a2([java.lang.String...]): {o33, o15} -->{java.lang.Object...}
5.58/2.36		o15!: String(count=1, hash=#, offset=0, value=o16?) -->{java.lang.Object...}
5.58/2.36	o34:: [CHAR] -->{java.lang.Object...}
5.58/2.36	o16:: [CHAR] -->{java.lang.Object...}
5.58/2.36	a2-><-o34
5.58/2.36	a2-><-o33
5.58/2.36	a2-><-o16
5.58/2.36	a2-><-o15
5.58/2.36	YES:  (JL1)
5.58/2.36	4:<java.lang.String.length||0: load ADDR this||this: o15|| ->
5.58/2.36	<simple.even.Main.main||3: java.lang.String.length||args: a2|| ->
5.58/2.36		o33!: String(count=0, hash=#, offset=0, value=o34?) -->{java.lang.Object...}
5.58/2.36		a2([java.lang.String...]): {o33, o15} -->{java.lang.Object...}
5.58/2.36		o15!: String(count=1, hash=#, offset=0, value=o16?) -->{java.lang.Object...}
5.58/2.36	o34:: [CHAR] -->{java.lang.Object...}
5.58/2.36	o16:: [CHAR] -->{java.lang.Object...}
5.58/2.36	a2-><-o34
5.58/2.36	a2-><-o33
5.58/2.36	a2-><-o16
5.58/2.36	a2-><-o15
5.58/2.36	YES:  (JL1)
5.58/2.36	5:<java.lang.String.length||1: Read from count|| - ||o15>
5.58/2.36	<simple.even.Main.main||3: java.lang.String.length||args: a2|| ->
5.58/2.36		o33!: String(count=0, hash=#, offset=0, value=o34?) -->{java.lang.Object...}
5.58/2.36		a2([java.lang.String...]): {o33, o15} -->{java.lang.Object...}
5.58/2.36		o15!: String(count=1, hash=#, offset=0, value=o16?) -->{java.lang.Object...}
5.58/2.36	o34:: [CHAR] -->{java.lang.Object...}
5.58/2.36	o16:: [CHAR] -->{java.lang.Object...}
5.58/2.36	a2-><-o34
5.58/2.36	a2-><-o33
5.58/2.36	a2-><-o16
5.58/2.36	a2-><-o15
5.58/2.36	YES:  (JL1)
5.58/2.36	6:<java.lang.String.length||4: return INT|| - ||1>
5.58/2.36	<simple.even.Main.main||3: java.lang.String.length||args: a2|| ->
5.58/2.36		o33!: String(count=0, hash=#, offset=0, value=o34?) -->{java.lang.Object...}
5.58/2.36		a2([java.lang.String...]): {o33, o15} -->{java.lang.Object...}
5.58/2.36		o15!: String(count=1, hash=#, offset=0, value=o16?) -->{java.lang.Object...}
5.58/2.36	o34:: [CHAR] -->{java.lang.Object...}
5.58/2.36	o16:: [CHAR] -->{java.lang.Object...}
5.58/2.36	a2-><-o34
5.58/2.36	a2-><-o33
5.58/2.36	a2-><-o16
5.58/2.36	a2-><-o15
5.58/2.36	YES:  (JL1)
5.58/2.36	7:<simple.even.Main.main||6: store INT to even||args: a2||1>
5.58/2.36		o33!: String(count=0, hash=#, offset=0, value=o34?) -->{java.lang.Object...}
5.58/2.36		a2([java.lang.String...]): {o33, o15} -->{java.lang.Object...}
5.58/2.36		o15!: String(count=1, hash=#, offset=0, value=o16?) -->{java.lang.Object...}
5.58/2.36	o34:: [CHAR] -->{java.lang.Object...}
5.58/2.36	o16:: [CHAR] -->{java.lang.Object...}
5.58/2.36	a2-><-o34
5.58/2.36	a2-><-o33
5.58/2.36	a2-><-o16
5.58/2.36	a2-><-o15
5.58/2.36	YES:  (JL1)
5.58/2.36	8:<simple.even.Main.main||7: load ADDR args||args: a2, even: 1|| ->
5.58/2.36		o33!: String(count=0, hash=#, offset=0, value=o34?) -->{java.lang.Object...}
5.58/2.36		a2([java.lang.String...]): {o33, o15} -->{java.lang.Object...}
5.58/2.36		o15!: String(count=1, hash=#, offset=0, value=o16?) -->{java.lang.Object...}
5.58/2.36	o34:: [CHAR] -->{java.lang.Object...}
5.58/2.36	o16:: [CHAR] -->{java.lang.Object...}
5.58/2.36	a2-><-o34
5.58/2.36	a2-><-o33
5.58/2.36	a2-><-o16
5.58/2.36	a2-><-o15
5.58/2.36	YES:  (JL1)
5.58/2.36	9:<simple.even.Main.main||8: push 0||even: 1||a2>
5.58/2.36		o33!: String(count=0, hash=#, offset=0, value=o34?) -->{java.lang.Object...}
5.58/2.36		a2([java.lang.String...]): {o33, o15} -->{java.lang.Object...}
5.58/2.36		o15!: String(count=1, hash=#, offset=0, value=o16?) -->{java.lang.Object...}
5.58/2.36	o34:: [CHAR] -->{java.lang.Object...}
5.58/2.36	o16:: [CHAR] -->{java.lang.Object...}
5.58/2.36	a2-><-o34
5.58/2.36	a2-><-o33
5.58/2.36	a2-><-o16
5.58/2.36	a2-><-o15
5.58/2.36	YES:  (JL1)
5.58/2.36	10:<simple.even.Main.main||9: Read ADDR from array||even: 1||a2, 0>
5.58/2.36		o33!: String(count=0, hash=#, offset=0, value=o34?) -->{java.lang.Object...}
5.58/2.36		a2([java.lang.String...]): {o33, o15} -->{java.lang.Object...}
5.58/2.36		o15!: String(count=1, hash=#, offset=0, value=o16?) -->{java.lang.Object...}
5.58/2.36	o34:: [CHAR] -->{java.lang.Object...}
5.58/2.36	o16:: [CHAR] -->{java.lang.Object...}
5.58/2.36	a2-><-o34
5.58/2.36	a2-><-o33
5.58/2.36	a2-><-o16
5.58/2.36	a2-><-o15
5.58/2.36	YES:  (JL1)
5.58/2.36	11:<simple.even.Main.main||10: java.lang.String.length()I||even: 1||o33>
5.58/2.36		o33!: String(count=0, hash=#, offset=0, value=o34?) -->{java.lang.Object...}
5.58/2.36	o34:: [CHAR] -->{java.lang.Object...}
5.58/2.36	YES:  (JL1)
5.58/2.36	12:<java.lang.String.length||0: load ADDR this||this: o33|| ->
5.58/2.36	<simple.even.Main.main||10: java.lang.String.length||even: 1|| ->
5.58/2.36		o33!: String(count=0, hash=#, offset=0, value=o34?) -->{java.lang.Object...}
5.58/2.36	o34:: [CHAR] -->{java.lang.Object...}
5.58/2.36	YES:  (JL1)
5.58/2.36	13:<java.lang.String.length||1: Read from count|| - ||o33>
5.58/2.36	<simple.even.Main.main||10: java.lang.String.length||even: 1|| ->
5.58/2.36		o33!: String(count=0, hash=#, offset=0, value=o34?) -->{java.lang.Object...}
5.58/2.36	o34:: [CHAR] -->{java.lang.Object...}
5.58/2.36	YES:  (JL1)
5.58/2.36	14:<java.lang.String.length||4: return INT|| - ||0>
5.58/2.36	<simple.even.Main.main||10: java.lang.String.length||even: 1|| ->
5.58/2.36	YES:  (JL1)
5.58/2.36	15:<simple.even.Main.main||13: push 2||even: 1||0>
5.58/2.36	YES:  (JL1)
5.58/2.36	16:<simple.even.Main.main||14: TMOD||even: 1||0, 2>
5.58/2.36	YES:  (JL1)
5.58/2.36	17:<simple.even.Main.main||15: NE 0||even: 1||0>
5.58/2.36	YES:  (JL1)
5.58/2.36	18:<simple.even.Main.main||18: load INT even||even: 1|| ->
5.58/2.36	YES:  (JL1)
5.58/2.36	19:<simple.even.Main.main||19: NEG|| - ||1>
5.58/2.36	YES:  (JL1)
5.58/2.36	20:<simple.even.Main.main||20: store INT to even|| - ||-1>
5.58/2.36	YES:  (JL1)
5.58/2.36	21:<simple.even.Main.main||21: load INT even||even: -1|| ->
5.58/2.36	YES:  (JL1)
5.58/2.36	22:<simple.even.Main.main||22: simple.even.Even.even(I)Z|| - ||-1>
5.58/2.36	YES:  (JL1)
5.58/2.36	23:<simple.even.Even.even||0: load INT i||i: -1|| ->
5.58/2.36	<simple.even.Main.main||22: simple.even.Even.even|| - || ->
5.58/2.36	YES:  (JL1)
5.58/2.36	Start state of loop: 
5.58/2.36	
5.58/2.36	<simple.even.Even.even||0: load INT i||i: i36|| ->
5.58/2.36	[a2(lv_0_0)]
5.58/2.36	<simple.even.Main.main||22: simple.even.Even.even|| - || ->
5.58/2.36		a2([java.lang.String...]): length i6 -->{java.lang.Object...}
5.58/2.36		i6: [2,+inf){0,+inf}
5.58/2.36		i36: (-inf,0]{-inf,+inf}
5.58/2.36	YES:  (JL1)
5.58/2.36	
5.58/2.36	
5.58/2.36	In the loop head node, references [i36] were interesting.
5.58/2.36	
5.58/2.36	All methods calls in the loop body are side-effect free, hence they can be ignored.
5.58/2.36	
5.58/2.36	By SMT, we could prove
5.58/2.36	
5.58/2.36	((initial_i36 <= 0 and 2 <= initial_i6) and (((path1_i36 = path1_i45 and path1_i88 = (path1_i45 - 2) and path1_i88 = res_i36 and path1_i36 = initial_i36) and (path1_i36 < 1 and path1_i45 < 0)) and ((res1_i36 = res1_i45 and res1_i88 = (res1_i45 - 2) and res_i36 = res1_i36) and !(res1_i36 < 1 and res1_i45 < 0))))
5.58/2.36	
5.58/2.36	to be UNSAT. Consequently, the loop will not terminate.
5.58/2.36	----------------------------------------
5.58/2.36	
5.58/2.36	(6)
5.58/2.36	NO
5.58/2.40	EOF