Please assess the completion status of the following clinical trial:

Trial Title: Add-on Effects of Tiotropium Over Formoterol in Exercise Tolerance on Chronic Obstructive Pulmonary Disease Patients

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

Eligibility Criteria:
Inclusion Criteria:~* COPD patients aged ≥ 40 years with stable moderate-to-severe airflow obstruction (FEV1 \< 70% and FEV1/FVC ≤ 70% of predicted normal value) post-bronchodilator~* presenting with a long history of smoking (\> 20 pack-years) and chronic breathlessness (Baseline Dyspnoea Index total score \< 9)~Exclusion Criteria:~* significant cardiovascular disease, hospitalization for COPD exacerbation or presence of a respiratory tract infection within 1 month of screening~* current or childhood asthma~* a history of allergic rhinitis or other atopic disease~* inability to interrupt usual bronchodilator medication~* use of oral steroids within a month before screening~* need for long-term oxygen therapy, arterial oxygen saturation \< 85% at rest anemia, hypo- and hyperthyroidism, hyperadrenergic state~* uncontrolled insulin dependent diabetes mellitus, malignancy, or any disease or condition which limits exercise performance other than COPD~* change in inhaled corticosteroid or theophylline use within 1 month prior to screening

- Gender: ALL
- Minimum Age: 40 Years
- Maximum Age: None
- Healthy Volunteers: f

Study Arms:
- 1 (Type: ACTIVE_COMPARATOR): Formoterol plus Placebo (Tiotropium)
- 2 (Type: EXPERIMENTAL): Formoterol plus Tiotropium

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