The power to dissent: composite and divided sense (Alvarez)
Thesis XL. For although grace works effectively so that free choice consents to the grace that moves it and follows its lead, it does not take away its power to dissent. The efficacious aid of Christ does ensure that a person's will always and most surely embraces the good toward which it is moved; but it does not prevent the will, while grace is moving it, from always having the power not to do that good, and even to do the opposite evil.
In these doctors' view, the created will's actual dissent cannot coexist with the actual motion of efficacious grace, but the power to dissent coexists perfectly well with that same motion. And this is what Alvarez says: that free choice moved by God with efficacious aid cannot dissent from it in the composite sense, but can in the divided sense.
Latin
XL. Quamvis enim gratia efficaciter operetur, ut liberum arbitrium moventi gratiae consentiat, & ductum illius sequatur, non tamen tollit ab eo dissentiendi potestatem. Praestat quidem Christi auxilium efficax ut hominis voluntas, & semper & certissime amplectatur bonum illud ad quod movetur; sed non impedit, quominus dum gratia illam movet, potentiam semper habeat non faciendi tale bonum, imo etiam malum oppositum faciendi. Nempe, ex Doctorum istorum sententia, actualis creatae voluntatis dissensus, cum actuali motione gratiae efficacis consistere non potest; sed tamen cum eadem motione optime consistit potentia dissentiendi. Et hoc est quod dicit Alvarez liberum arbitrium motum a Deo auxilio efficaci, non posse illi dissentire in sensu composito, sed in sensu diviso.