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0dcb2adc
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0dcb2adc
authored
Aug 08, 2016
by
Ralf Jung
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explain how the ghost state for the counter example can be implemented
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program_logic/counter_examples.v
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0dcb2adc
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@@ -87,6 +87,12 @@ Module inv. Section inv.
(* We have tokens for a little "two-state STS": [start] -> [finish].
state. [start] also asserts the exact state; it is only ever owned by the
invariant. [finished] is duplicable. *)
(* Posssible implementations of these axioms:
* Using the STS monoid of a two-state STS, where [start] is the
authoritative saying the state is exactly [start], and [finish]
is the "we are at least in state [finish]" typically owned by threads.
* Ex () +_⊥ ()
*)
Context
(
gname
:
Type
).
Context
(
start
finished
:
gname
→
iProp
).
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