A 74-year-old man visited an urologist with complaints of pain above the pubis and inability to urinate for 8 hours. At home he had taken antispasmodics and had a warm bath but no improvement occurred. Objectively: the abdomen is soft and painful above the pubis; dullness of percussion sound is observed above the pubis. Murphy's punch sign (costovertebral angle tenderness) is negative on both sides. What condition does the patient have?