CHAPTER XII
Article 70. Reduction of sentences. The persons who at the time of the entry into force of this law are serving sentences after final judgments shall have the right to a reduction in the sentence imposed by one-tenth, except for those convicted of sexual offenses, crimes against humanity, and drug-trafficking.
For the granting and setting of the benefit, the judge of enforcement of sentences and security measures shall take into account the convict’s good conduct, his or her commitment not to repeat the criminal acts, his or her cooperation with the justice system and actions to make reparation to the victims.
Determination of sentence - national proceedings
EDIT.