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Jonas Kastberg
iris
Commits
042393e6
Commit
042393e6
authored
Dec 11, 2017
by
Ralf Jung
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more experimental changelog
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df0f72f0
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CHANGELOG.md
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042393e6
...
@@ -14,14 +14,14 @@ Changes in and extensions of the theory:
...
@@ -14,14 +14,14 @@ Changes in and extensions of the theory:
*
Constructions for least and greatest fixed points over monotone predicates
*
Constructions for least and greatest fixed points over monotone predicates
(defined in the logic of Iris using impredicative quantification).
(defined in the logic of Iris using impredicative quantification).
*
Add a proof of the inverse of
`wp_bind`
.
*
Add a proof of the inverse of
`wp_bind`
.
*
Support verifying code that might get stuck by
distinguishing "non-stuck"
*
[Experimental feature]
Support verifying code that might get stuck by
vs. "(potentially) stuck" weakest
preconditions. (See
distinguishing "non-stuck"
vs. "(potentially) stuck" weakest
[Swasey et al., OOPSLA '17] for examples.) The non-stuck
`WP e @ E {{ Φ }}`
preconditions. (See
[Swasey et al., OOPSLA '17] for examples.) The non-stuck
ensures that, as
`e`
runs, it does not get stuck. The stuck
`WP e @ E ?{{ Φ
`WP e @ E {{ Φ }}`
ensures that, as
`e`
runs, it does not get stuck. The stuck
}}`
ensures that, as usual, all invariants are preserved while
`e`
runs, but
`WP e @ E ?{{ Φ
}}`
ensures that, as usual, all invariants are preserved while
it permits execution to get stuck. The former implies the
latter. The full
`e`
runs, but
it permits execution to get stuck. The former implies the
judgment is
`WP e @ s; E {{ Φ }}`
, where non-stuck WP uses
*stuckness bit*
`s
latter. The full
judgment is
`WP e @ s; E {{ Φ }}`
, where non-stuck WP uses
= NotStuck`
while stuck WP uses
`s = MaybeStuck`
.
*stuckness bit*
`s
= NotStuck`
while stuck WP uses
`s = MaybeStuck`
.
Changes in Coq:
Changes in Coq:
...
...
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