progressive probation
Rare legal term referring to a system of probation that progresses in stages or intensity. The exact scope is unclear; likely a specialized translation of a foreign concept.
The term 前進的論証 is hardly ever seen in Japanese legal documents.
Compound of 前進的 (progressive) and 論証 (proof, argumentation). The exact derivation is uncertain; it appears to be a direct translation of the English legal term 'progressive probation'.