Please assess the completion status of the following clinical trial:

Trial Title: A Phase II Study to Determine the Safety and Efficacy of Second-line Treatment With Metformin and Chemotherapy (FOLFOX6 or FOFIRI) in the Second Line Threatment of Advanced Colorectal Cancer

Study Design Characteristics:
- Allocation: None
- Intervention Model: SINGLE_GROUP
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: NONE
- Phase: PHASE2
- Number of Arms: 1.0

Eligibility Criteria:
Inclusion Criteria:~* age over 18~* histologically confirmted advanced colorectal cancer~* ECOG PS 0-2~* expected life span more than 3months~* normal bone marrow, liver, renal function~Exclusion Criteria:~* 5-FU, oxaliplatin, irinotecan or Metformin Allergic history~* Lactic acidosis, metabolic acidosis~* active infection or severe neuropathy

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

Study Arms:
- FOLFOX6+Metformin/FOFIRI+Metformin (Type: EXPERIMENTAL): None

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