/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# AProVE Commit ID: 48fb2092695e11cc9f56e44b17a92a5f88ffb256 marcel 20180622 unpublished dirty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, 310 ms]
(4) NO


----------------------------------------

(0)
Obligation:
need to prove termination of the following program:
package simple.whileIncrPart;

public class Main {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		WhileIncrPart.increase(args.length);

	}

}


package simple.whileIncrPart;

public class WhileIncrPart {

	public static void increase(int i) {
		while (i > 0) {
			if (i > 3) {
				i++;
			} else {
			  i--;
			}
		}
	}
}



----------------------------------------

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

(2)
Obligation:
need to prove termination of the following program:
package simple.whileIncrPart;

public class Main {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		WhileIncrPart.increase(args.length);

	}

}


package simple.whileIncrPart;

public class WhileIncrPart {

	public static void increase(int i) {
		while (i > 0) {
			if (i > 3) {
				i++;
			} else {
			  i--;
			}
		}
	}
}



----------------------------------------

(3) JBCNonTerm (COMPLETE)
Reached a loop using the following run: 

0:<simple.whileIncrPart.Main.main||0: load ADDR args||args: a19|| ->
	a19([java.lang.String...]): length 4 -->{java.lang.Object...}
YES:  (JL1)
1:<simple.whileIncrPart.Main.main||1: arraylength|| - ||a19>
	a19([java.lang.String...]): length 4 -->{java.lang.Object...}
YES:  (JL1)
2:<simple.whileIncrPart.Main.main||2: simple.whileIncrPart.WhileIncrPart.increase(I)V|| - ||4>
YES:  (JL1)
3:<simple.whileIncrPart.WhileIncrPart.increase||0: load INT i||i: 4|| ->
<simple.whileIncrPart.Main.main||2: simple.whileIncrPart.WhileIncrPart.increase|| - || ->
YES:  (JL1)
Start state of loop: 

<simple.whileIncrPart.WhileIncrPart.increase||0: load INT i||i: i44|| ->
[a9(lv_0_0)]
<simple.whileIncrPart.Main.main||2: simple.whileIncrPart.WhileIncrPart.increase|| - || ->
	i44: [0,+inf)(l1)
	i45: [0,+inf)(l2)
	a9([java.lang.String...]): length i45 -->{java.lang.Object...}
YES:  (JL1)


In the loop head node, references [i44] were interesting.

All methods calls in the loop body are side-effect free, hence they can be ignored.

By SMT, we could prove

((0 <= initial_i44 and 0 <= initial_i45) and (((path2_i44 = path2_i72 and path2_i72 = path2_i76 and path2_i79 = (path2_i76 + 1) and path2_i79 = res_i44 and path2_i44 = initial_i44) and (path2_i72 > 0 and T and 3 = 3 and path2_i76 > 3)) and ((res2_i44 = res2_i72 and res2_i72 = res2_i76 and res2_i79 = (res2_i76 + 1) and res_i44 = res2_i44) and !(res2_i72 > 0 and T and 3 = 3 and res2_i76 > 3))))

to be UNSAT. Consequently, the loop will not terminate.
----------------------------------------

(4)
NO