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


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NO
proof of /export/starexec/sandbox/benchmark/theBenchmark.jar
# AProVE Commit ID: 794c25de1cacf0d048858bcd21c9a779e1221865 marcel 20200619 unpublished dirty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, 248 ms]
(4) NO


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

public class ComplInterv {

	public static void loop(int i) {
		while (i*i > 9) {
			if (i < 0) {
				i = i-1;
			} else {
				i = i+1;
			}
		}
	}
	
}


package simple.complInterv;

public class Main {

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

	}

}



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(1) BareJBCToJBCProof (EQUIVALENT)
initialized classpath
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(2)
Obligation:
need to prove termination of the following program:
package simple.complInterv;

public class ComplInterv {

	public static void loop(int i) {
		while (i*i > 9) {
			if (i < 0) {
				i = i-1;
			} else {
				i = i+1;
			}
		}
	}
	
}


package simple.complInterv;

public class Main {

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

	}

}



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

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

0:<simple.complInterv.Main.main||0: load ADDR args||args: a10|| ->
	a10([java.lang.String...]): length 4 -->{java.lang.Object...}
YES:  (JL1)
1:<simple.complInterv.Main.main||1: arraylength|| - ||a10>
	a10([java.lang.String...]): length 4 -->{java.lang.Object...}
YES:  (JL1)
2:<simple.complInterv.Main.main||2: simple.complInterv.ComplInterv.loop(I)V|| - ||4>
YES:  (JL1)
3:<simple.complInterv.ComplInterv.loop||0: load INT i||i: 4|| ->
<simple.complInterv.Main.main||2: simple.complInterv.ComplInterv.loop|| - || ->
YES:  (JL1)
Start state of loop: 

<simple.complInterv.ComplInterv.loop||0: load INT i||i: i17|| ->
[a4(lv_0_0)]
<simple.complInterv.Main.main||2: simple.complInterv.ComplInterv.loop|| - || ->
	i17: [0,+inf)(l1)
	i2: [0,+inf)
	a4([java.lang.String...]): length i2 -->{java.lang.Object...}
YES:  (JL1)


In the loop head node, references [i17] 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_i17 and 0 <= initial_i2) and (((path1_i22 = (path1_i17 * path1_i17) and path1_i22 = path1_i24 and path1_i28 = (path1_i17 + 1) and path1_i28 = res_i17 and path1_i17 = initial_i17) and (T and 9 = 9 and path1_i24 > 9 and path1_i17 >= 0)) and ((res1_i22 = (res1_i17 * res1_i17) and res1_i22 = res1_i24 and res1_i28 = (res1_i17 + 1) and res_i17 = res1_i17) and !(T and 9 = 9 and res1_i24 > 9 and res1_i17 >= 0))))

to be UNSAT. Consequently, the loop will not terminate.
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(4)
NO