Commit 33df52c8 authored by Ralf Jung's avatar Ralf Jung

changelog

parent 8bb5541f
...@@ -19,6 +19,11 @@ Changes in and extensions of the theory: ...@@ -19,6 +19,11 @@ Changes in and extensions of the theory:
experimental. experimental.
* [#] The adequacy statement for weakest preconditions now also involves the * [#] The adequacy statement for weakest preconditions now also involves the
final state. final state.
* [#] Add the notion of an "observation" to the language interface, so that
every reduction step can optionally be marked with an event, and an execution
trace has a matching list of events. Change WP so that it is told the entire
future trace of observations from the beginning. Use this in heap_lang to
implement prophecy variables.
* [#] The Löb rule is now a derived rule; it follows from later-intro, later * [#] The Löb rule is now a derived rule; it follows from later-intro, later
being contractive and the fact that we can take fixpoints of contractive being contractive and the fact that we can take fixpoints of contractive
functions. functions.
......
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