5.87/2.47	NO
6.16/2.50	proof of /export/starexec/sandbox2/benchmark/theBenchmark.jar
6.16/2.50	# AProVE Commit ID: 48fb2092695e11cc9f56e44b17a92a5f88ffb256 marcel 20180622 unpublished dirty
6.16/2.50	
6.16/2.50	
6.16/2.50	termination of the given Bare JBC problem could be disproven:
6.16/2.50	
6.16/2.50	(0) Bare JBC problem
6.16/2.50	(1) BareJBCToJBCProof [EQUIVALENT, 93 ms]
6.16/2.50	(2) JBC problem
6.16/2.50	(3) JBCToGraph [EQUIVALENT, 309 ms]
6.16/2.50	(4) JBCTerminationGraph
6.16/2.50	(5) JBCNonTerm [COMPLETE, 203 ms]
6.16/2.50	(6) NO
6.16/2.50	
6.16/2.50	
6.16/2.50	----------------------------------------
6.16/2.50	
6.16/2.50	(0)
6.16/2.50	Obligation:
6.16/2.50	need to prove termination of the following program:
6.16/2.50	package simple.gauss;
6.16/2.50	
6.16/2.50	public class Gauss {
6.16/2.50	
6.16/2.50		// does not terminate for negative numbers 
6.16/2.50		
6.16/2.50		public static int sum(int n) {
6.16/2.50			int sum = 0;
6.16/2.50			while (n != 0) {
6.16/2.50				sum += n;
6.16/2.50				n--;
6.16/2.50			}
6.16/2.50			return sum;
6.16/2.50		}
6.16/2.50	
6.16/2.50	}
6.16/2.50	
6.16/2.50	
6.16/2.50	package simple.gauss;
6.16/2.50	
6.16/2.50	public class Main {
6.16/2.50	
6.16/2.50		/**
6.16/2.50		 * @param args
6.16/2.50		 */
6.16/2.50		public static void main(String[] args) {
6.16/2.50	        int value = args[1].length();
6.16/2.50	        if (args[0].length() % 2 == 0) {
6.16/2.50	            value = -value;
6.16/2.50	        }
6.16/2.50			Gauss.sum(value);
6.16/2.50		}
6.16/2.50	
6.16/2.50	}
6.16/2.50	
6.16/2.50	
6.16/2.50	
6.16/2.50	----------------------------------------
6.16/2.50	
6.16/2.50	(1) BareJBCToJBCProof (EQUIVALENT)
6.16/2.50	initialized classpath
6.16/2.50	----------------------------------------
6.16/2.50	
6.16/2.50	(2)
6.16/2.50	Obligation:
6.16/2.50	need to prove termination of the following program:
6.16/2.50	package simple.gauss;
6.16/2.50	
6.16/2.50	public class Gauss {
6.16/2.50	
6.16/2.50		// does not terminate for negative numbers 
6.16/2.50		
6.16/2.50		public static int sum(int n) {
6.16/2.50			int sum = 0;
6.16/2.50			while (n != 0) {
6.16/2.50				sum += n;
6.16/2.50				n--;
6.16/2.50			}
6.16/2.50			return sum;
6.16/2.50		}
6.16/2.50	
6.16/2.50	}
6.16/2.50	
6.16/2.50	
6.16/2.50	package simple.gauss;
6.16/2.50	
6.16/2.50	public class Main {
6.16/2.50	
6.16/2.50		/**
6.16/2.50		 * @param args
6.16/2.50		 */
6.16/2.50		public static void main(String[] args) {
6.16/2.50	        int value = args[1].length();
6.16/2.50	        if (args[0].length() % 2 == 0) {
6.16/2.50	            value = -value;
6.16/2.50	        }
6.16/2.50			Gauss.sum(value);
6.16/2.50		}
6.16/2.50	
6.16/2.50	}
6.16/2.50	
6.16/2.50	
6.16/2.50	
6.16/2.50	----------------------------------------
6.16/2.50	
6.16/2.50	(3) JBCToGraph (EQUIVALENT)
6.16/2.50	Constructed TerminationGraph.
6.16/2.50	----------------------------------------
6.16/2.50	
6.16/2.50	(4)
6.16/2.50	Obligation:
6.16/2.50	Termination Graph based on JBC Program:
6.16/2.50	simple.gauss.Main.main([Ljava/lang/String;)V: Graph of 139 nodes with 2 SCCs.
6.16/2.50	
6.16/2.50	
6.16/2.50	
6.16/2.50	
6.16/2.50	
6.16/2.50	----------------------------------------
6.16/2.50	
6.16/2.50	(5) JBCNonTerm (COMPLETE)
6.16/2.50	Reached a loop using the following run: 
6.16/2.50	
6.16/2.50	0:<simple.gauss.Main.main||0: load ADDR args||args: a27|| ->
6.16/2.50		o33!: String(count=0, hash=#, offset=0, value=o34?) -->{java.lang.Object...}
6.16/2.50		a27([java.lang.String...]): {o33, o15} -->{java.lang.Object...}
6.16/2.50		o15!: String(count=1, hash=#, offset=0, value=o16?) -->{java.lang.Object...}
6.16/2.50	o34:: [CHAR] -->{java.lang.Object...}
6.16/2.50	o16:: [CHAR] -->{java.lang.Object...}
6.16/2.50	a27-><-o34
6.16/2.50	a27-><-o33
6.16/2.50	a27-><-o16
6.16/2.50	a27-><-o15
6.16/2.50	YES:  (JL1)
6.16/2.50	1:<simple.gauss.Main.main||1: push 1||args: a27||a27>
6.16/2.50		o33!: String(count=0, hash=#, offset=0, value=o34?) -->{java.lang.Object...}
6.16/2.50		a27([java.lang.String...]): {o33, o15} -->{java.lang.Object...}
6.16/2.50		o15!: String(count=1, hash=#, offset=0, value=o16?) -->{java.lang.Object...}
6.16/2.50	o34:: [CHAR] -->{java.lang.Object...}
6.16/2.50	o16:: [CHAR] -->{java.lang.Object...}
6.16/2.50	a27-><-o34
6.16/2.50	a27-><-o33
6.16/2.50	a27-><-o16
6.16/2.50	a27-><-o15
6.16/2.50	YES:  (JL1)
6.16/2.50	2:<simple.gauss.Main.main||2: Read ADDR from array||args: a27||a27, 1>
6.16/2.50		o33!: String(count=0, hash=#, offset=0, value=o34?) -->{java.lang.Object...}
6.16/2.50		a27([java.lang.String...]): {o33, o15} -->{java.lang.Object...}
6.16/2.50		o15!: String(count=1, hash=#, offset=0, value=o16?) -->{java.lang.Object...}
6.16/2.50	o34:: [CHAR] -->{java.lang.Object...}
6.16/2.50	o16:: [CHAR] -->{java.lang.Object...}
6.16/2.50	a27-><-o34
6.16/2.50	a27-><-o33
6.16/2.50	a27-><-o16
6.16/2.50	a27-><-o15
6.16/2.50	YES:  (JL1)
6.16/2.50	3:<simple.gauss.Main.main||3: java.lang.String.length()I||args: a27||o15>
6.16/2.50		o33!: String(count=0, hash=#, offset=0, value=o34?) -->{java.lang.Object...}
6.16/2.50		a27([java.lang.String...]): {o33, o15} -->{java.lang.Object...}
6.16/2.50		o15!: String(count=1, hash=#, offset=0, value=o16?) -->{java.lang.Object...}
6.16/2.50	o34:: [CHAR] -->{java.lang.Object...}
6.16/2.50	o16:: [CHAR] -->{java.lang.Object...}
6.16/2.50	a27-><-o34
6.16/2.50	a27-><-o33
6.16/2.50	a27-><-o16
6.16/2.50	a27-><-o15
6.16/2.50	YES:  (JL1)
6.16/2.50	4:<java.lang.String.length||0: load ADDR this||this: o15|| ->
6.16/2.50	<simple.gauss.Main.main||3: java.lang.String.length||args: a27|| ->
6.16/2.50		o33!: String(count=0, hash=#, offset=0, value=o34?) -->{java.lang.Object...}
6.16/2.50		a27([java.lang.String...]): {o33, o15} -->{java.lang.Object...}
6.16/2.50		o15!: String(count=1, hash=#, offset=0, value=o16?) -->{java.lang.Object...}
6.16/2.50	o34:: [CHAR] -->{java.lang.Object...}
6.16/2.50	o16:: [CHAR] -->{java.lang.Object...}
6.16/2.50	a27-><-o34
6.16/2.50	a27-><-o33
6.16/2.50	a27-><-o16
6.16/2.50	a27-><-o15
6.16/2.50	YES:  (JL1)
6.16/2.50	5:<java.lang.String.length||1: Read from count|| - ||o15>
6.16/2.50	<simple.gauss.Main.main||3: java.lang.String.length||args: a27|| ->
6.16/2.50		o33!: String(count=0, hash=#, offset=0, value=o34?) -->{java.lang.Object...}
6.16/2.50		a27([java.lang.String...]): {o33, o15} -->{java.lang.Object...}
6.16/2.50		o15!: String(count=1, hash=#, offset=0, value=o16?) -->{java.lang.Object...}
6.16/2.50	o34:: [CHAR] -->{java.lang.Object...}
6.16/2.50	o16:: [CHAR] -->{java.lang.Object...}
6.16/2.50	a27-><-o34
6.16/2.50	a27-><-o33
6.16/2.50	a27-><-o16
6.16/2.50	a27-><-o15
6.16/2.50	YES:  (JL1)
6.16/2.50	6:<java.lang.String.length||4: return INT|| - ||1>
6.16/2.50	<simple.gauss.Main.main||3: java.lang.String.length||args: a27|| ->
6.16/2.50		o33!: String(count=0, hash=#, offset=0, value=o34?) -->{java.lang.Object...}
6.16/2.50		a27([java.lang.String...]): {o33, o15} -->{java.lang.Object...}
6.16/2.50		o15!: String(count=1, hash=#, offset=0, value=o16?) -->{java.lang.Object...}
6.16/2.50	o34:: [CHAR] -->{java.lang.Object...}
6.16/2.50	o16:: [CHAR] -->{java.lang.Object...}
6.16/2.50	a27-><-o34
6.16/2.50	a27-><-o33
6.16/2.50	a27-><-o16
6.16/2.50	a27-><-o15
6.16/2.50	YES:  (JL1)
6.16/2.50	7:<simple.gauss.Main.main||6: store INT to value||args: a27||1>
6.16/2.50		o33!: String(count=0, hash=#, offset=0, value=o34?) -->{java.lang.Object...}
6.16/2.50		a27([java.lang.String...]): {o33, o15} -->{java.lang.Object...}
6.16/2.50		o15!: String(count=1, hash=#, offset=0, value=o16?) -->{java.lang.Object...}
6.16/2.50	o34:: [CHAR] -->{java.lang.Object...}
6.16/2.50	o16:: [CHAR] -->{java.lang.Object...}
6.16/2.50	a27-><-o34
6.16/2.50	a27-><-o33
6.16/2.50	a27-><-o16
6.16/2.50	a27-><-o15
6.16/2.50	YES:  (JL1)
6.16/2.50	8:<simple.gauss.Main.main||7: load ADDR args||args: a27, value: 1|| ->
6.16/2.50		o33!: String(count=0, hash=#, offset=0, value=o34?) -->{java.lang.Object...}
6.16/2.50		a27([java.lang.String...]): {o33, o15} -->{java.lang.Object...}
6.16/2.50		o15!: String(count=1, hash=#, offset=0, value=o16?) -->{java.lang.Object...}
6.16/2.50	o34:: [CHAR] -->{java.lang.Object...}
6.16/2.50	o16:: [CHAR] -->{java.lang.Object...}
6.16/2.50	a27-><-o34
6.16/2.50	a27-><-o33
6.16/2.50	a27-><-o16
6.16/2.50	a27-><-o15
6.16/2.50	YES:  (JL1)
6.16/2.50	9:<simple.gauss.Main.main||8: push 0||value: 1||a27>
6.16/2.50		o33!: String(count=0, hash=#, offset=0, value=o34?) -->{java.lang.Object...}
6.16/2.50		a27([java.lang.String...]): {o33, o15} -->{java.lang.Object...}
6.16/2.50		o15!: String(count=1, hash=#, offset=0, value=o16?) -->{java.lang.Object...}
6.16/2.50	o34:: [CHAR] -->{java.lang.Object...}
6.16/2.50	o16:: [CHAR] -->{java.lang.Object...}
6.16/2.50	a27-><-o34
6.16/2.50	a27-><-o33
6.16/2.50	a27-><-o16
6.16/2.50	a27-><-o15
6.16/2.50	YES:  (JL1)
6.16/2.50	10:<simple.gauss.Main.main||9: Read ADDR from array||value: 1||a27, 0>
6.16/2.50		o33!: String(count=0, hash=#, offset=0, value=o34?) -->{java.lang.Object...}
6.16/2.50		a27([java.lang.String...]): {o33, o15} -->{java.lang.Object...}
6.16/2.50		o15!: String(count=1, hash=#, offset=0, value=o16?) -->{java.lang.Object...}
6.16/2.50	o34:: [CHAR] -->{java.lang.Object...}
6.16/2.50	o16:: [CHAR] -->{java.lang.Object...}
6.16/2.50	a27-><-o34
6.16/2.50	a27-><-o33
6.16/2.50	a27-><-o16
6.16/2.50	a27-><-o15
6.16/2.50	YES:  (JL1)
6.16/2.50	11:<simple.gauss.Main.main||10: java.lang.String.length()I||value: 1||o33>
6.16/2.50		o33!: String(count=0, hash=#, offset=0, value=o34?) -->{java.lang.Object...}
6.16/2.50	o34:: [CHAR] -->{java.lang.Object...}
6.16/2.50	YES:  (JL1)
6.16/2.50	12:<java.lang.String.length||0: load ADDR this||this: o33|| ->
6.16/2.50	<simple.gauss.Main.main||10: java.lang.String.length||value: 1|| ->
6.16/2.50		o33!: String(count=0, hash=#, offset=0, value=o34?) -->{java.lang.Object...}
6.16/2.50	o34:: [CHAR] -->{java.lang.Object...}
6.16/2.50	YES:  (JL1)
6.16/2.50	13:<java.lang.String.length||1: Read from count|| - ||o33>
6.16/2.50	<simple.gauss.Main.main||10: java.lang.String.length||value: 1|| ->
6.16/2.50		o33!: String(count=0, hash=#, offset=0, value=o34?) -->{java.lang.Object...}
6.16/2.50	o34:: [CHAR] -->{java.lang.Object...}
6.16/2.50	YES:  (JL1)
6.16/2.50	14:<java.lang.String.length||4: return INT|| - ||0>
6.16/2.50	<simple.gauss.Main.main||10: java.lang.String.length||value: 1|| ->
6.16/2.50	YES:  (JL1)
6.16/2.50	15:<simple.gauss.Main.main||13: push 2||value: 1||0>
6.16/2.50	YES:  (JL1)
6.16/2.50	16:<simple.gauss.Main.main||14: TMOD||value: 1||0, 2>
6.16/2.50	YES:  (JL1)
6.16/2.50	17:<simple.gauss.Main.main||15: NE 0||value: 1||0>
6.16/2.50	YES:  (JL1)
6.16/2.50	18:<simple.gauss.Main.main||18: load INT value||value: 1|| ->
6.16/2.50	YES:  (JL1)
6.16/2.50	19:<simple.gauss.Main.main||19: NEG|| - ||1>
6.16/2.50	YES:  (JL1)
6.16/2.50	20:<simple.gauss.Main.main||20: store INT to value|| - ||-1>
6.16/2.50	YES:  (JL1)
6.16/2.50	21:<simple.gauss.Main.main||21: load INT value||value: -1|| ->
6.16/2.50	YES:  (JL1)
6.16/2.50	22:<simple.gauss.Main.main||22: simple.gauss.Gauss.sum(I)I|| - ||-1>
6.16/2.50	YES:  (JL1)
6.16/2.50	23:<simple.gauss.Gauss.sum||0: push 0||n: -1|| ->
6.16/2.50	<simple.gauss.Main.main||22: simple.gauss.Gauss.sum|| - || ->
6.16/2.50	YES:  (JL1)
6.16/2.50	24:<simple.gauss.Gauss.sum||1: store INT to sum||n: -1||0>
6.16/2.50	<simple.gauss.Main.main||22: simple.gauss.Gauss.sum|| - || ->
6.16/2.50	YES:  (JL1)
6.16/2.50	25:<simple.gauss.Gauss.sum||2: load INT n||n: -1, sum: 0|| ->
6.16/2.50	<simple.gauss.Main.main||22: simple.gauss.Gauss.sum|| - || ->
6.16/2.50	YES:  (JL1)
6.16/2.50	Start state of loop: 
6.16/2.50	
6.16/2.50	<simple.gauss.Gauss.sum||2: load INT n||n: i352, sum: i354|| ->
6.16/2.50	[a16(lv_0_0)]
6.16/2.50	<simple.gauss.Main.main||22: simple.gauss.Gauss.sum|| - || ->
6.16/2.50		i352: (-inf,0](u2){-inf,+inf}
6.16/2.50		i354: (-inf,0](u2){-inf,+inf}
6.16/2.50		i6: [2,+inf){0,+inf}
6.16/2.50		a16([java.lang.String...]): length i6 -->{java.lang.Object...}
6.16/2.50	YES:  (JL1)
6.16/2.50	
6.16/2.50	
6.16/2.50	In the loop head node, references [i352] were interesting.
6.16/2.50	
6.16/2.50	All methods calls in the loop body are side-effect free, hence they can be ignored.
6.16/2.50	
6.16/2.50	By SMT, we could prove
6.16/2.50	
6.16/2.50	((initial_i352 <= 0 and initial_i354 <= 0 and 2 <= initial_i6) and (((path1_i352 = path1_i382 and path1_i387 = (path1_i354 + path1_i382) and path1_i392 = (path1_i382 + -1) and path1_i392 = res_i352 and path1_i352 = initial_i352) and path1_i382 < 0) and ((res1_i352 = res1_i382 and res1_i387 = (res1_i354 + res1_i382) and res1_i392 = (res1_i382 + -1) and res_i352 = res1_i352) and !res1_i382 < 0)))
6.16/2.50	
6.16/2.50	to be UNSAT. Consequently, the loop will not terminate.
6.16/2.50	----------------------------------------
6.16/2.50	
6.16/2.50	(6)
6.16/2.50	NO
6.23/2.53	EOF