exploit brake_pads(a)=
	preconditions:
		quality:a,brake_months=6;
		quality:a,brake_vio=false;
	postconditions:
		update quality:a,brake_vio=true;
		update quality:a,compliance_vio=true;
.

exploit exhaust_pipes(a)=
	preconditions:
		quality:a,exhaust_months=12;
		quality:a,exhaust_vio=false;
	postconditions:
		update quality:a,compliance_vio=true;
		update quality:a,exhaust_vio=true;
.

exploit ac_filter(a)=
	preconditions:
		quality:a,ac_odometer=120000;
		quality:a,ac_vio=false;
	postconditions:
		insert quality:a,is_critical=true;
		update quality:a,compliance_vio=true;
		update quality:a,ac_vio=true;
.

exploit vacuum_pump(a)=
	preconditions:
		quality:a,vacuum_odometer=120000;
		quality:a,engine=diesel;
		quality:a,vacuum_vio=false;
	postconditions:
		insert quality:a,is_critical=true;
		update quality:a,compliance_vio=true;
		update quality:a,vacuum_vio=true;
.

exploit brake_service(a)=
	preconditions:
		quality:a,brake_vio=true;
	postconditions:
		update quality:a,brake_vio=false;
		update quality:a,brake_months=0;
.