Please assess the completion status of the following clinical trial:

Trial Title: Catheter Ablation Versus Medical Rate Control for Atrial Fibrillation in Patients With Heart Failure

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

Eligibility Criteria:
Inclusion criteria:~* Age ≥ 18 years, \< 80years~* NYHA II-IV symptoms~* Impairment of left ventricular systolic function (left ventricular ejection fraction estimated as ≤ 35% by radionuclide ventriculography)~* Documented AF lasting for at least 7 days (persistent or permanent AF)~Exclusion criteria:~* CRT or ICD device implanted in the previous 6 months~* AV nodal ablation within previous 3 months~* Prior AV nodal ablation or complete heart block with a single chamber pacemaker~* Contraindication to anticoagulation~* Persistent thrombus in the left atrium despite anticoagulation~* Active malignancy~* Cerebrovascular accident within the previous 6 months~* Reversible causes of AF including thyroid disorders, alcohol, recent surgery~* Reversible causes of heart failure including acute myocarditis or alcohol~* Cardiac events including myocardial infarction (MI), percutaneous coronary intervention (PCI), valve or coronary bypass surgery within the previous 3 months~* Prior AF ablation procedure~* Previous heart transplant, or on urgent heart transplant waiting list~* Severe neuro-muscular disease~* Creatinine clearance \<30 ml/min~* Serum bilirubin \>50 micromol/L~* Active participation in another research study~* Unable to understand and comply with protocol or give written informed consent~* Body mass index \>35 (kg/m2)

- Gender: ALL
- Minimum Age: 18 Years
- Maximum Age: 80 Years
- Healthy Volunteers: f

Study Arms:
- Rate control (Type: ACTIVE_COMPARATOR): Strategy of 'rate-control': acceptance of atrial fibrillation, and dose-adjusted drug therapy as needed to control ventricular rate.
- Catheter Ablation (Type: ACTIVE_COMPARATOR): Strategy of 'rhythm control' by catheter ablation: patients will undergo catheter ablation with the intention of restoring sinus rhythm.

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