 After that he officially abandoned Pisa and signed a treaty with Genoa.In 1168, a treaty negotiated by Nuvolone Alberici between Genoa and Arborea on one side and Pisa, Torres, and Cagliari on the other restored lands lost to Arborea.In 1183, Pisa reoccupied Cagliari, but in 1186, Barisone returned to his old allies after the death of his brother.