Termination of the given JBC could be disproven:

(0) Obligation:

JBC Problem based on JBC Program:
Manifest-Version: 1.0 Created-By: 1.6.0_26 (Sun Microsystems Inc.) Main-Class: simple/complInterv2/Main

package simple.complInterv2;

public class ComplInterv2 {

	public static void loop(int i) {
		while (i != 0) {
			if (i > -5 && i < 5) {
				if (i < 0) {
					i++;
				}
				if (i > 0) {
					i--;
				}
			} 			
		}
	}

}


package simple.complInterv2;

public class Main {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		ComplInterv2.loop(args.length);
	}

}

(1) JBCNonTerm (EQUIVALENT transformation)

Constructed a run with a repetition. States 3 and 11 are repetitions.
0:

<simple.complInterv2.Main.main||0: load ADDR args||args: a2|| ->
	String.serialVersionUID: -6849794470754667710L
	String.serialPersistentFields: a4
	String.CASE_INSENSITIVE_ORDER: o2
	String$CaseInsensitiveComparator.serialVersionUID: 8575799808933029326L
	RuntimeException.serialVersionUID: -7034897190745766939L
	Exception.serialVersionUID: -3387516993124229948L
	Throwable.serialVersionUID: -3042686055658047285L
	a2([java.lang.String...]): length 5
	a4([java.io.ObjectStreamField|]): length 0
	o2!: String$CaseInsensitiveComparator()

1:

<simple.complInterv2.Main.main||1: arraylength|| - ||a2>
	String.serialVersionUID: -6849794470754667710L
	String.serialPersistentFields: a4
	String.CASE_INSENSITIVE_ORDER: o2
	String$CaseInsensitiveComparator.serialVersionUID: 8575799808933029326L
	RuntimeException.serialVersionUID: -7034897190745766939L
	Exception.serialVersionUID: -3387516993124229948L
	Throwable.serialVersionUID: -3042686055658047285L
	a2([java.lang.String...]): length 5
	a4([java.io.ObjectStreamField|]): length 0
	o2!: String$CaseInsensitiveComparator()

2:

<simple.complInterv2.Main.main||2: simple.complInterv2.ComplInterv2.loop(I)V|| - ||5>
	String.serialVersionUID: -6849794470754667710L
	String.serialPersistentFields: a4
	String.CASE_INSENSITIVE_ORDER: o2
	String$CaseInsensitiveComparator.serialVersionUID: 8575799808933029326L
	RuntimeException.serialVersionUID: -7034897190745766939L
	Exception.serialVersionUID: -3387516993124229948L
	Throwable.serialVersionUID: -3042686055658047285L
	a2([java.lang.String...]): length 5
	a4([java.io.ObjectStreamField|]): length 0
	o2!: String$CaseInsensitiveComparator()

3:

<simple.complInterv2.ComplInterv2.loop||0: load INT i||i: 5|| ->
<simple.complInterv2.Main.main||2: simple.complInterv2.ComplInterv2.loop|| - ||5>
	String.serialVersionUID: -6849794470754667710L
	String.serialPersistentFields: a4
	String.CASE_INSENSITIVE_ORDER: o2
	String$CaseInsensitiveComparator.serialVersionUID: 8575799808933029326L
	RuntimeException.serialVersionUID: -7034897190745766939L
	Exception.serialVersionUID: -3387516993124229948L
	Throwable.serialVersionUID: -3042686055658047285L
	a2([java.lang.String...]): length 5
	a4([java.io.ObjectStreamField|]): length 0
	o2!: String$CaseInsensitiveComparator()

4:

<simple.complInterv2.ComplInterv2.loop||1: EQ 0||i: 5||5>
<simple.complInterv2.Main.main||2: simple.complInterv2.ComplInterv2.loop|| - ||5>
	String.serialVersionUID: -6849794470754667710L
	String.serialPersistentFields: a4
	String.CASE_INSENSITIVE_ORDER: o2
	String$CaseInsensitiveComparator.serialVersionUID: 8575799808933029326L
	RuntimeException.serialVersionUID: -7034897190745766939L
	Exception.serialVersionUID: -3387516993124229948L
	Throwable.serialVersionUID: -3042686055658047285L
	a2([java.lang.String...]): length 5
	a4([java.io.ObjectStreamField|]): length 0
	o2!: String$CaseInsensitiveComparator()

5:

<simple.complInterv2.ComplInterv2.loop||4: load INT i||i: 5|| ->
<simple.complInterv2.Main.main||2: simple.complInterv2.ComplInterv2.loop|| - ||5>
	String.serialVersionUID: -6849794470754667710L
	String.serialPersistentFields: a4
	String.CASE_INSENSITIVE_ORDER: o2
	String$CaseInsensitiveComparator.serialVersionUID: 8575799808933029326L
	RuntimeException.serialVersionUID: -7034897190745766939L
	Exception.serialVersionUID: -3387516993124229948L
	Throwable.serialVersionUID: -3042686055658047285L
	a2([java.lang.String...]): length 5
	a4([java.io.ObjectStreamField|]): length 0
	o2!: String$CaseInsensitiveComparator()

6:

<simple.complInterv2.ComplInterv2.loop||5: push -5||i: 5||5>
<simple.complInterv2.Main.main||2: simple.complInterv2.ComplInterv2.loop|| - ||5>
	String.serialVersionUID: -6849794470754667710L
	String.serialPersistentFields: a4
	String.CASE_INSENSITIVE_ORDER: o2
	String$CaseInsensitiveComparator.serialVersionUID: 8575799808933029326L
	RuntimeException.serialVersionUID: -7034897190745766939L
	Exception.serialVersionUID: -3387516993124229948L
	Throwable.serialVersionUID: -3042686055658047285L
	a2([java.lang.String...]): length 5
	a4([java.io.ObjectStreamField|]): length 0
	o2!: String$CaseInsensitiveComparator()

7:

<simple.complInterv2.ComplInterv2.loop||7: LE||i: 5||5, -5>
<simple.complInterv2.Main.main||2: simple.complInterv2.ComplInterv2.loop|| - ||5>
	String.serialVersionUID: -6849794470754667710L
	String.serialPersistentFields: a4
	String.CASE_INSENSITIVE_ORDER: o2
	String$CaseInsensitiveComparator.serialVersionUID: 8575799808933029326L
	RuntimeException.serialVersionUID: -7034897190745766939L
	Exception.serialVersionUID: -3387516993124229948L
	Throwable.serialVersionUID: -3042686055658047285L
	a2([java.lang.String...]): length 5
	a4([java.io.ObjectStreamField|]): length 0
	o2!: String$CaseInsensitiveComparator()

8:

<simple.complInterv2.ComplInterv2.loop||10: load INT i||i: 5|| ->
<simple.complInterv2.Main.main||2: simple.complInterv2.ComplInterv2.loop|| - ||5>
	String.serialVersionUID: -6849794470754667710L
	String.serialPersistentFields: a4
	String.CASE_INSENSITIVE_ORDER: o2
	String$CaseInsensitiveComparator.serialVersionUID: 8575799808933029326L
	RuntimeException.serialVersionUID: -7034897190745766939L
	Exception.serialVersionUID: -3387516993124229948L
	Throwable.serialVersionUID: -3042686055658047285L
	a2([java.lang.String...]): length 5
	a4([java.io.ObjectStreamField|]): length 0
	o2!: String$CaseInsensitiveComparator()

9:

<simple.complInterv2.ComplInterv2.loop||11: push 5||i: 5||5>
<simple.complInterv2.Main.main||2: simple.complInterv2.ComplInterv2.loop|| - ||5>
	String.serialVersionUID: -6849794470754667710L
	String.serialPersistentFields: a4
	String.CASE_INSENSITIVE_ORDER: o2
	String$CaseInsensitiveComparator.serialVersionUID: 8575799808933029326L
	RuntimeException.serialVersionUID: -7034897190745766939L
	Exception.serialVersionUID: -3387516993124229948L
	Throwable.serialVersionUID: -3042686055658047285L
	a2([java.lang.String...]): length 5
	a4([java.io.ObjectStreamField|]): length 0
	o2!: String$CaseInsensitiveComparator()

10:

<simple.complInterv2.ComplInterv2.loop||12: GE||i: 5||5, 5>
<simple.complInterv2.Main.main||2: simple.complInterv2.ComplInterv2.loop|| - ||5>
	String.serialVersionUID: -6849794470754667710L
	String.serialPersistentFields: a4
	String.CASE_INSENSITIVE_ORDER: o2
	String$CaseInsensitiveComparator.serialVersionUID: 8575799808933029326L
	RuntimeException.serialVersionUID: -7034897190745766939L
	Exception.serialVersionUID: -3387516993124229948L
	Throwable.serialVersionUID: -3042686055658047285L
	a2([java.lang.String...]): length 5
	a4([java.io.ObjectStreamField|]): length 0
	o2!: String$CaseInsensitiveComparator()

11:

<simple.complInterv2.ComplInterv2.loop||0: load INT i||i: 5|| ->
<simple.complInterv2.Main.main||2: simple.complInterv2.ComplInterv2.loop|| - ||5>
	String.serialVersionUID: -6849794470754667710L
	String.serialPersistentFields: a4
	String.CASE_INSENSITIVE_ORDER: o2
	String$CaseInsensitiveComparator.serialVersionUID: 8575799808933029326L
	RuntimeException.serialVersionUID: -7034897190745766939L
	Exception.serialVersionUID: -3387516993124229948L
	Throwable.serialVersionUID: -3042686055658047285L
	a2([java.lang.String...]): length 5
	a4([java.io.ObjectStreamField|]): length 0
	o2!: String$CaseInsensitiveComparator()

(2) NO