Nick Vivarelli International CorrespondentDisney and Pixar’s existential cartoon “Soul” has been set as the opening film of the Rome Film Festival, which is scheduled to take place as a physical event Oct. 15-25.A festival rep said she was unsure whether the film’s director Pete Docter, who is also chief creative officer of Pixar Animation Studios, will be able to make the trek to Rome.It is also unclear what Disney’s release plans are for “Soul” for which the studio has set a Nov.