This paper deals with automated termination analysis for partial functional programs, i.e. for functional programs which do not terminate for each input. We present a method to determine their domains (resp. non-trivial subsets of their domains) automatically. More precisely, for each functional program, a termination predicate algorithm is synthesized, which only returns true for inputs where the program is terminating. To ease subsequent reasoning about the generated termination predicates we also present a procedure for their simplification.
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