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Not clear whether acceptance sets can be specified both on a set and some of its exit arcs #69

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vkhomenko opened this issue Mar 26, 2019 · 3 comments

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@vkhomenko
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commented Mar 26, 2019

The documentation says:

The INT* used in acc-sig represent the acceptance sets the state or edge belongs to. Since we use transition-based acceptance, when acc-sig is used on a state to declare membership to some acceptance sets, it is syntactic sugar for the membership of all the outgoing transitions to this set. For instance State: 0 {1 3} would states that all transitions leaving state 0 are in acceptance sets 1 and 3.

It is not clear whether acc-sig can be specified on both the state and some of its exit arcs. There are several possibilities:

  • disallow this (and explicitly tell in the documentation)
  • allow this and then acc-sig on the state is united with those on the arcs; also, one may require the union to be disjoint.
@xblahoud

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commented Mar 27, 2019

This is addressed by the last example among nondeterministic automata where we explicitly allow this and specify this as union of the marks.

@adl

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commented Mar 27, 2019

I'm added a not above this in the aforementioned paragraph.

@adl adl closed this Mar 27, 2019

@strejcek

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commented Mar 27, 2019

I've just fixed an old typo in the paragraph...

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