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/ex02/Main

package simple.ex02;

public class Ex02 {

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


package simple.ex02;

public class Main {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		Ex02.loop(args.length);

	}

}

(1) JBCNonTerm (EQUIVALENT transformation)

Constructed a run with a repetition. States 3 and 8 are repetitions.
0:

<simple.ex02.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.ex02.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.ex02.Main.main||2: simple.ex02.Ex02.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.ex02.Ex02.loop||0: load INT i||i: 5|| ->
<simple.ex02.Main.main||2: simple.ex02.Ex02.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.ex02.Ex02.loop||1: LE 0||i: 5||5>
<simple.ex02.Main.main||2: simple.ex02.Ex02.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.ex02.Ex02.loop||4: load INT i||i: 5|| ->
<simple.ex02.Main.main||2: simple.ex02.Ex02.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.ex02.Ex02.loop||5: push 5||i: 5||5>
<simple.ex02.Main.main||2: simple.ex02.Ex02.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.ex02.Ex02.loop||6: EQ||i: 5||5, 5>
<simple.ex02.Main.main||2: simple.ex02.Ex02.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.ex02.Ex02.loop||0: load INT i||i: 5|| ->
<simple.ex02.Main.main||2: simple.ex02.Ex02.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