(20200629: execution or displayed error?)
We could belive a little more execution before:
First, we doubt exetution error:
Displayed error:
--- loop start i: 0: loop end i: 0: - |-| loop start i: 1: loop end i: 1: - |--| loop start i: 2: loop end i: 2: - |---| loop start i: 3: ||--- end i: 3: loop start i: 4: loop end i: 4: | | loop start i: 5: loop end i: 5: ( | (| loop start i: 6: |op end i: 6: | loop start i: 7: loop end i: 7: | | loop start i: 8: loop end i: 8: ) | )| loop start i: 9: |op end i: 9: | loop start i: 10: loop end i: 10: | | split_line: ---