An ambulance had been called to a 48-year-old man. According to his relatives, the patient had had three attacks of unconsciousness accompanied by convulsions within 24 hours. On examination the doctor witnessed the following attack: the patient lost consciousness and fell to the floor, developed tonic, then clonic convulsions of trunk and extremities. The attack lasted 1 minute and ended with involuntary urination. Specify the kind of attack: