Please assess the completion status of the following clinical trial:

Trial Title: A Study of the Efficacy of Prolonged-Release Melatonin Versus Placebo in Diabetic Patients Suffering From Insomnia

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: CROSSOVER
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: DOUBLE
- Phase: PHASE2
- Number of Arms: 2.0

Eligibility Criteria:
Inclusion Criteria:~* Diabetic patients with proven presence of the disease who complained of insomnia.~Exclusion Criteria:~* Patients with liver or renal problems (serum creatinine above 1.5 mg/dL).

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

Study Arms:
- Placebo First (Type: OTHER): Subjects were treated for 3 weeks with 1 tablet per night of Placebo and then with 2 mg melatonin (Circadin).
- Circadin first (Type: OTHER): Subjects were treated for 3 weeks with 1 tablet per night of 2 mg melatonin (Circadin) and then with placebo.

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