Please assess the completion status of the following clinical trial:

Trial Title: Low Volume Colon Preparation for IBD

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: PARALLEL
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: SINGLE
- Phase: PHASE4
- Number of Arms: 2.0

Eligibility Criteria:
Inclusion Criteria:~-Adult outpatiets with IBD colitis undergoing colonoscopy~Exclusion Criteria:~* Previous colon resection, ileus, intestinal obstruction, toxic megacolon, severe heart failure (NYHA Class III or IV), acute cardiovascular disease, uncontrolled arterial hypertension (systolic pressure \>170 mmHg, diastolic pressure \>100 mmHg), severe liver cirrhosis (Child-Pugh score C) or renal failure (creatinine clearance\<30 mL/minute), ascites, phenylketonuria, and glucose-6-phosphate dehydrogenase deficiency~* Pregnant or breastfeeding women were also excluded

- Gender: None
- Minimum Age: 18 Years
- Maximum Age: 85 Years
- Healthy Volunteers: f

Study Arms:
- 4 Liter PEG (Type: ACTIVE_COMPARATOR): Colon preparation for colonoscopy: PEG 4 Liter before endoscopy
- 2 Liter PEG plus bisacodil (Type: EXPERIMENTAL): Colon preparation for colonoscopy: PEG 2 L before endoscopy

Based on this trial design, predict the completion outcome and termination type (if applicable).