lib + proof: Isabelle2020 Method.NO_CONTEXT_TACTIC rename

Method.NO_CONTEXT_TACTIC -> NO_CONTEXT_TACTIC

Signed-off-by: Gerwin Klein <gerwin.klein@data61.csiro.au>

lib: Isabelle2020 update

Signed-off-by: Gerwin Klein <gerwin.klein@data61.csiro.au>

lib: improve crunch warning message

Refactor crunch to separately specify whether crunch_simps or
crunch_wps might be useful instead of printing one combined message.

Signed-off-by: Corey Lewis <Corey.Lewis@data61.csiro.au>

lib: improve crunch warning message

Change crunch to only warn when crunch_simps or crunch_wps can make
progress on the first goal. Previously it would try on all remaining
subgoals, which led to spurious warnings when schematic postconditions
could be unified incorrectly.

Signed-off-by: Corey Lewis <Corey.Lewis@data61.csiro.au>

licenses: convert license tags to SPDX

lib: refactor crunch warning messages to handle functions with multiple patterns

Crunch would print spurious warning messages when using a rule with multiple
premises. By default, crunch generates a rule like that when applied to
functions with multiple non-trivial patterns.

lib: reimplement crunch call stack feature so that it works when proofs fail.

This stopped working when crunch was changed to fork proofs.

lib: improve wp tracing

When tracing wp can now print the instantiated version of the rules being used.
It also says which set each used rule is from.

lib: add a warning if crunch fails and top-level constant is being ignored

lib: restrict safe in core crunch tactic so that we can avoid passing around the index

lib: make wp_cases_tac subgoal aware

lib: improve message printing for crunch and wp, and refactor common printing functions

lib: various crunch improvements

The main one is that crunch now uses wpsimp when determining whether a goal
can already be solved, instead of just wp. Crunch can also now use wps
when proving a goal and will now always ignore a constant if told to, even
if it is the top-level constant being crunched.

lib: wp cleanup and parser improvements

The main visible change is from wp_trace', 'wp_once' and 'wp_once_trace' to
'wp (trace)', 'wp (once)' and 'wp (once, trace)'. The option for printing a
warning for unused supplied wp rules has also been removed.

lib: improve the parser for crunch.

The main benefit of this is that everything in crunch is now ctrl clickable.
As an added benefit, supplied rules can now be modified by attributes when
needed.

lib/crunch: use induct package.

Discard some magic that was done to instantiate an induction rule,
and instead use the existing Induct_Tacs package to apply induction
rules, which seems to be successful more often.

lib: Refactor crunch so that it can be used for both the nondet monad and the trace monad

lib: Make Crunch more effective at applying supplied rules

lib: Add a warning to crunch if it does not do anything

lib: improved crunch

The main aim of this is for crunch to make consistent decisions about
whether to prove new rules. If any rules in the wp set can be used to
directly solve the goal crunch is working on, then crunch will just
use it.

Other changes include:
- crunch_ignore works properly inside locales again.
- if a rule already exists with the specific name crunch is going
to use, but that rule does not solve the goal crunch is working on
then crunch will now error.
- if crunch fails to prove a goal it will now output a warning if
adding crunch_simps or crunch_wps would allow it to make more
progess.

lib: Datatype_Schematic and WPFix.

Add two new tactics/methods which can fix common painful problems with
schematic variables.

Method datatype_schem improves unification outcomes, by making judicious use of
selectors like fst/snd/the/hd to bring variables into scope, and also using a
wrapper to avoid singleton constants like True being captured needlessly by
unification.

Method wpfix uses strengthen machinery to instantiate rogue postcondition
schematics to True and to split precondition schematics that are shared across
different sites.

lib: Add multi-crunch command 'crunches'.

It's just a parser tweak for crunch, and runs multiple crunch commands
with the same sections (wps, ignores, etc).

Also update the comments a little, and move them closer to the anchor of
command clicks (the @{command_keyword} antiquotation).

lib: Cleanup in crunch-cmd.ML

Mostly syntactic. Ensure less debug messages are generated
unconditionally.

remove most tab characters

Isabelle2016-1: update to new ML API

Update references to renamed ML constants; supply default arguments to
functions with additional parameters; etc.

Isabelle2016-1: update references to renamed constants and facts

Refactor of crunch.

Substantial adjustments to crunch. Main user changes are:
- 'lift' and 'unfold' mechanisms replaced by more general 'rule'.
- some more 'ignores' standardised.
- crunch has a more principled overall design:
+ discover crunch rule
* provided or by definition extraction
+ recurse according to rule
+ prove goal based on rule, recursive discoveries, standard tactic
* wp/simp adjustments tweak tactic

arch_split: added optional definition override for crunch. Reduced qualification commands to minimal required set.

make crunch fork proofs

make crunch prove in parallel when possible

fix lib for isabelle 2016

Fix wp_del for crunch.

Added wp_del and simp_del arguments to crunch.

lib: fewer warnings in crunch and wps

fewer warnings

more Isabelle2015 update; AInvs up to (excluding) Syscall_AI

also includes some global replacements

crunch: Reduce tracing messages, use "writeln" instead of "tracing".

Excessinve tracing messages cause jEdit to pause, waiting for the user
to click "Show more tracing output. We eliminate the debugging tracing
messages by default, and use "writeln" instead for the remainder.
("writeln" doesn't cause jEdit to pause.)

ported lib/* theories to Isabelle2014-RC0

some of the global Isabelle2014 renames

option_case -> case_option
sum_case -> case_sum
prod_case -> case_prod
Option.set -> set_option
Option.map -> map_option
option_rel -> rel_option
list_all2_def -> list_all2_iff
map.simps -> list.map
tl.simps -> list.sel(2-3)
the.simps -> option.sel

comment cleanup

Import release snapshot.