Please assess the completion status of the following clinical trial:

Trial Title: The Effects of Caffeine Withdrawal on Migraine

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: CROSSOVER
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: DOUBLE
- Phase: PHASE2/PHASE3
- Number of Arms: 2.0

Eligibility Criteria:
Inclusion Criteria:~* migraine present for at least 1 year and fulfilling diagnostic criteria (ICHD-3 beta)~* =/\> 3 migraine attacks per month~* no migraine prophylaxis the last month~* consumption =/\> 300 mg and \</= 800 mg caffeine per day the last month~* signed consent~Exclusion Criteria:~* suspicion of medication-overuse headache~* pregnancy and breast feeding~* serious co-morbidity or conditions requiring Medical treatment or caution~* working night shift~* use of drugs with moderate or major interactions with caffeine

- Gender: ALL
- Minimum Age: 18 Years
- Maximum Age: 65 Years
- Healthy Volunteers: f

Study Arms:
- Caffeine (Type: ACTIVE_COMPARATOR): Caffeine tablets (Recip) 100 mg, 300-800 mg
- Placebo (Type: PLACEBO_COMPARATOR): Placebo tablets

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