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Refactoring in coverage instrumentation #1819

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romainbrenguier
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This contains a few commit whose intent are to improve clarity of the code in the coverage instrumentation.

if(instruction->incoming_edges.size() != 1)
return {};

goto_programt::targett in_t = *instruction->incoming_edges.cbegin();
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Could be const.

@romainbrenguier romainbrenguier force-pushed the refactor/coverage-instrumentation branch from 8e68cde to 3ef6759 Compare February 9, 2018 14:09
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@chrisr-diffblue chrisr-diffblue left a comment

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Looks OK to me, with a tiny formatting nit.

optionalt<goto_programt::const_targett> representative_inst;

/// the source location representative for this block
// (we need a separate copy of source locations because we attach
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Tiny nit: Mix of '///' and '//' comments here

@romainbrenguier romainbrenguier force-pushed the refactor/coverage-instrumentation branch from 3ef6759 to 3454ef1 Compare February 12, 2018 13:36
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Looks good, one nitpick

@@ -15,6 +15,26 @@ Author: Peter Schrammel
#include <util/message.h>
#include <util/string2int.h>

/// create list of covered lines as CSV string and set as property of source
/// location of basic block, compress to ranges if applicable
static void update_covered_lines(cover_basic_blockst::block_infot &block_info);
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I think you could just define this here rather than forward-declare it?

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Yes it was mostly to avoid moving too much code, have a smaller diff and make it easier to review

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@LAJW LAJW Feb 12, 2018

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Which is a Good Thing, anyway. It's much easier to just glance at the definitions at the top of the file than to scroll through the whole thing trying to create a mental map of its contents. Forward declarations are there to avoid function repositioning every time we want to use it before it's declared. I'd leave it as it is.

@@ -214,7 +218,7 @@ void cover_basic_blockst::output(std::ostream &out) const
<< '\n';
}

void cover_basic_blockst::update_covered_lines(block_infot &block_info)
static void update_covered_lines(cover_basic_blockst::block_infot &block_info)
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But now block_infot gets unnecessarily exposed.

typedef std::vector<block_infot> block_infost;
block_infost block_infos;

/// create list of covered lines as CSV string and set as property of source
/// location of basic block, compress to ranges if applicable
void update_covered_lines(block_infot &block_info);
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You could make this static inside the class instead of exposing block_infot.

/// forward gotos, return this blocks number.
static optionalt<unsigned> continuation_of_block(
const goto_programt::const_targett &instruction,
std::map<goto_programt::const_targett, unsigned> &block_map)
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If this method was inside the class you could take advantage of the block_map typedef (it would be used twice then).

@@ -23,15 +23,14 @@ class cover_basic_blockst
public:
struct block_infot
{
/// the program location to instrument for this block
/// the program instruction representative for this block
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There a couple of typos in the commit message.

@romainbrenguier romainbrenguier force-pushed the refactor/coverage-instrumentation branch from 3454ef1 to d95d28e Compare February 13, 2018 07:10
This is more explicit than using goto_program.instructions.end to denote
the empty case.
@romainbrenguier romainbrenguier force-pushed the refactor/coverage-instrumentation branch 3 times, most recently from efddc26 to eb6463f Compare February 13, 2018 08:58
@@ -20,6 +20,33 @@ class message_handlert;

class cover_basic_blockst
{
private:
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Merge the private sections at the end of the class.

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@peterschrammel Is there a reason for that? I'd prefer to have type definitions at the beginning of the class.

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My view on this is that I'd like to see the interface of the class first. Internal stuff can come at the end...
Of course, if there are type definitions that are part of the public interface then they should go first.

This is only working on the block_info member.
We pull this function out of the cover_basic_blockst constructor, as the
constructor is rather long, and having a function for this part of the
code makes it clearer.
Use private instead of protected.
Remove typedef used only once.
Document members.
Mark class final.
@romainbrenguier romainbrenguier force-pushed the refactor/coverage-instrumentation branch from eb6463f to 6492b3a Compare February 13, 2018 11:29
@romainbrenguier romainbrenguier merged commit 2bb98d9 into diffblue:develop Feb 13, 2018
smowton pushed a commit to smowton/cbmc that referenced this pull request May 9, 2018
f7602af Merge commit 'bb88574aaa4043f0ebf0ad6881ccaaeb1f0413ff' into merge-develop-20180327
906aeb3 Merge pull request diffblue#349 from diffblue/owen-jones-diffblue/fix-compilation-for-release
3d8423c Merge pull request diffblue#350 from diffblue/owen-jones-diffblue/skip-duplicate-callsites-in-lazy-methods
73fb488 bugfix from upstream repo for generic crash
fd76555 Speed up resolution of virtual callsites in lazy loading
3fd28f3 Replace assert(X) by UNREACHABLE/INVARIANT(X)
557158e Merge pull request diffblue#334 from diffblue/pull-support-20180216
1e48132 Merge from master, 20180216
ad7b28e Updates requsted in the PR: mostly rename 'size -> length'.
e3fcb9b Introducing MAX_FILE_NAME_SIZE constant.
bb88574 Merge pull request diffblue#1806 from thk123/refactor/address-review-comments-from-1796
db9c214 Merge pull request diffblue#1850 from tautschnig/include-cleanup
78fbf08 Merge pull request diffblue#1844 from smowton/smowton/feature/prepare-symex-for-lazy-loading
4098ed5 Merge pull request diffblue#1849 from smowton/smowton/cleanup/java-main-function-types
06f3e83 Use C++ headers instead of their C variants
e918a91 Goto-symex: add support for general function accessor
9e31303 Symex: switch to incrementally populating address-taken locals
ac5af68 Address-taken locals analysis: support incremental analysis
fe775f3 Merge pull request diffblue#1843 from peterschrammel/instructions-function
a6fd729 Cleanup tests with anomalous main functions
5df3fca Clean up get_function_id hacks
552b100 Set function member of each goto instruction in goto program passes
38e6e4a Merge pull request diffblue#1813 from smowton/smowton/fix/cleanup-unused-clinits
278e4e6 Merge pull request diffblue#1826 from smowton/smowton/fix/java-inherited-static-fields
a2ebb33 Merge pull request diffblue#1713 from karkhaz/kk-debug-timestamps
7b5dd17 Merge pull request diffblue#1834 from diffblue/library-preconditions
1da5be1 Add tests for inherited static fields
19d622b Add tests to verify that synthetic method removal is performed
adc9fd4 Java frontend: clean up unused clinit symbols
f15c312 Exclude j.l.O from possible static field hosts.
afa443c US spelling of initialize
d4d4a9a Tolerate stub static fields defined on non-stub types
873e1f6 Guess public access for stub globals
d6783d8 Java method converter: look for inherited static fields
32cc538 Insert stub static globals onto any incomplete ancestor class
b2d3d61 Search static fields inherited from interfaces
045ac05 Create stub globals on the first parent incomplete class
5b3cde5 Use a common instance of class_hierarchyt in get_inherited_component
e73e756 Create stub globals: check for inherited globals
bea6371 Annotate static fields with accessibility
168c2a8 Generalise get_inherited_method
f3160e1 resolve_concrete_function_callt -> resolve_inherited_componentt
82549de Emit timestamps on each line of output
3f6965b Replace util/timer* with std::chrono
ef08ae2 Merge pull request diffblue#1820 from smowton/smowton/fix/remove-string-solver-iteration-limit
0f20482 Merge pull request diffblue#1836 from karkhaz/kk-remove-unused-lambda-capture
e8105bd Merge pull request diffblue#1833 from diffblue/symex_class_cleanup
f6f45fc turn some assertions in the stdlib.h models into preconditions
9ea0cc6 pre-conditions for strings
fbd54df Remove unused lambda capture
9620802 Merge pull request diffblue#1815 from smowton/smowton/feature/replace-clinit-unwinder
9b59631 Merge pull request diffblue#1828 from smowton/smowton/cleanup/remove-recreate-initialize
1ac9abe Remove string refinement iteration limit
c94548c preconditions for delete and delete[]
9ba7fe2 cleanup of some noise (mostly obvious declarators) in the goto_symext class
bb64ea6 clean up symex_assign vs. symex_assign_rec
932a38f Merge pull request diffblue#1827 from karkhaz/kk-symex-operator-tidy
968d97e Remove __CPROVER_initialize recreation
06a220a Reimplement remove-static-init-loops to avoid need to inspect GOTO program
2bb98d9 Merge pull request diffblue#1819 from romainbrenguier/refactor/coverage-instrumentation
6492b3a Rearrange cover_basic_blocks header
a9549e7 Define constants as const
fa35ccd Pull continuation_of_block function out
560d712 Declare constants as const
35422f3 Make update_covered_lines a static function
b4cadf8 [path explore 1/8] Tidy up symext top-level funs
0f3ae1a Make representative_inst an optional
dc696a4 Make format_number_range function instead of class
678218a Merge pull request diffblue#1825 from thk123/refactor/corrected-path-of-language-file
ba76a8f Merge pull request diffblue#1751 from tautschnig/fix-1748
b665269 Correcting path to a file
d0889a8 Merge pull request diffblue#1822 from diffblue/legacy-language
441f706 Merge pull request diffblue#1823 from diffblue/cleanup
11714b2 use constant_exprt version of to_integer
733f3b8 remove old-style constructor for member_exprt
63f09ac remove unused function make_next_state
77c8b9c remove translation for certain boolean program constructs
1bac484 cleanout decision_proceduret::in_core
d8967f5 moving language.h and language_file.h to langapi folder
f9b9599 Merge pull request diffblue#1761 from diffblue/function_typet
dd040e5 Added function_typet.
bcd88a0 Merge pull request diffblue#1821 from smowton/smowton/feature/test-pl-tags
45f0939 test.pl: add support for tagging test-cases
40b8c03 Updates requested in PR - mainly rename of functions.
7f868e2 Reused private code in 'remove_virtual_functions.cpp' by making it public.
ae6775a Merge pull request diffblue#1790 from martin-cs/fix/correct-domain-interface
d7bb937 Catch the case when a GOTO instruction is effectively a SKIP.
b2fba97 Correct domain transformers so that they meet the preconditions.
d447c26 Document the invariants on iterators arguments to transform and merge.
e3db794 Whitespace changes to keep clang-format happy.
1990994 Revert "Add edge type parameter to ai transform method"
3ca91bc Revert "Fix iterator comparison bug in reaching_definitions.cpp"
ac036fd Revert "Fix iterator equality check bug in dependence_graph.cpp"
86cadcd Revert "Fix iterator equality check bug in custom_bitvector_analysis.cpp"
db925de Revert "Fix iterator equality check bug in constant_propagator.cpp"
2c69364 Merge pull request diffblue#1811 from cesaro/iterator-fix
807268e Fixes the symbol_base_tablet iterator
0df054c Merge pull request diffblue#1781 from smowton/smowton/feature/java-create-stub-globals-earlier
e163ab6 Java frontend: create synthetic static initialisers for stub globals
fbcb423 Merge pull request diffblue#1802 from NathanJPhillips/feature/symbol_iterator
e106cf8 Merge pull request diffblue#1793 from smowton/smowton/cleanup/remove-java-new-lowering-pass
52dfc36 Merge pull request diffblue#1731 from diffblue/bugfix/all_resolved_calls
f123ae9 Adding comment referencing where the invariant comes from
f7c89e1 Add iterator for symbol_table_baset
150f826 Merge pull request diffblue#1801 from hannes-steffenhagen-diffblue/add-idea-gitignore
745afbc Merge pull request diffblue#1796 from thk123/refactor/bytecode-parsing-tidy
6362295 Add .idea (CLion) directory to .gitignore
31da890 Revert "Do lowering of java_new as a function-level pass"
6f6fda7 Merge pull request diffblue#1794 from smowton/smowton/fix/goto-diff-test-escapes
4a538d2 Adding comments on the non-standard patternt
9bfe177 Adding an early guard for correctly parsed exception table
6fe1808 Improved error reporting on invalid constant pool index
93dab4c Escape curly braces in regexes
814cfcc Adapt failing unit test for value set analysis
3ff90bc Add unit test
e67a96e Add regression test
3df5348 Adapt regression tests for virtual functions.
09efc90 Re-Resolve function calls if only java.lang.Object was found.
a619e48 Merge pull request diffblue#1763 from jeannielynnmoulton/base_class_info_tg1287
0b8dd57 Merge pull request diffblue#1785 from smowton/smowton/fix/core-models-cmake-script
50dcec8 Adding unit tests for extracting generic bases' info
54df3a1 Correcting generic parameters in bases for implicitly generic classes
6d691d7 Parsing generic bases' information into the class symbol
7d041f0 Defining a new type for generic bases
f10eb71 Fix Java core-models build script
8d66028 Merge pull request diffblue#1774 from smowton/smowton/feature/java-create-clinit-state-earlier
679d9b8 Java frontend: create static initialiser globals ahead of time
4a93a29 Merge pull request diffblue#1788 from smowton/smowton/fix/java_tcmp_nan
6ad8ffd Fix Java ternary-compare against NaN
1e0ac30 Turn get_may, set_may, etc into irep_ids
b0cb1ee Merge pull request diffblue#1766 from smowton/smowton/feature/java-frontend-create-literal-globals-early
a2e3af5 Merge pull request diffblue#1744 from smowton/smowton/feature/instrument_cover_per_function
22ae7aa Merge pull request diffblue#1637 from tautschnig/bswap
a1a972f Merge pull request diffblue#1776 from smowton/smowton/feature/class-hierarchy-grapht
ef3c598 Merge pull request diffblue#1775 from diffblue/refactor/set_classpath
45dd840 Merge pull request diffblue#1728 from romainbrenguier/refactor/split-axiom-vectors
8a27950 Java frontend: create String an Class literals earlier
d95cb12 Move string literal initialisation into separate file
515ebdd CI lazy methods: scan global initialisers for global references
cab7b52 C front-end: fix promotion order for types ranking lower than int
c450328 Support for --16 on Visual Studio, no _WIN64 in 32-bit mode
b2c4188 Do not use non-trivial system headers with --32
80b972b Use split_string in set_classpath
fdb2ebc Merge pull request diffblue#1773 from smowton/smowton/feature/string-solver-ensure-class-graph-consistency
a6eed7c Add class-hierarchy variant based on grapht
311af6d Coverage: fully support instrumenting one function at a time
ceafd85 Java string solver: ensure base types are loaded
1e17db6 Merge pull request diffblue#1735 from cesaro/core-models
6844760 Merge pull request diffblue#1769 from smowton/smowton/fix/nondet-initialize-after-initialize
a8e659c Fixed CMake linker ODR violations caused by a regression-test
f66288b Internalize core models of the Java Class Library
34216f5 Refactor jar loading
ed008f9 Add constructors for having memory-loaded jar files This allows the jar_file class to load from a buffer (c array) as opposed to a file
86a34c9 Merge pull request diffblue#1765 from smowton/smowton/fix/ci-lazy-methods-array-element-types
1e11f6d Add test for multiple array types in single method
5009cbb CI lazy methods: re-explore array types with different element types
857fcf9 Cleanup unused fields in string refinement
51d86f5 Adapt unit tests for splitted axiom vectors
1843e44 Split string generator axioms into separate vectors
5669d9b Java: run nondet-initialize method *after* initialization
0b5a5c3 Rename test case
3440018 Provide function name in goto_model_functiont
f17e2c8 Merge pull request diffblue#1741 from smowton/smowton/feature/add_failed_symbols_per_function
f65f0fd Merge pull request diffblue#1764 from smowton/smowton/feature/java-infer-opaque-type-fields-earlier
dbc00a7 Add doxygen to add-failed-symbols
3788467 JBMC: add failed symbols on a per-function basis
e934867 Provide a journalling symbol table to process-goto-function
e86e2a0 Java: infer opaque type fields before method conversion
f0f50e3 Journalling symbol table: enable nesting
58d5980 Merge pull request diffblue#1740 from smowton/smowton/feature/adjust_float_expressions_per_function
c91ff69 JBMC: adjust float expressions per function
eed983a JBMC: add property checks on a per-function basis
db3bc99 JBMC: run convert-nondet on a per-function basis
99ea8fe JBMC: run replace-Java-nondet on function-by-function basis
bfd4f50 Merge pull request diffblue#1730 from smowton/smowton/feature/remove_returns_per_function
96569c3 JBMC: remove return values on a per-function basis
a7595c1 Remove returns: support running per-function
fd6e195 Merge pull request diffblue#1718 from cesaro/concurrency-team-small-fixes
e6fe617 Merge pull request diffblue#1705 from jgwilson42/goto-diff-tests
22afc5c Fixes wrong invocation order for static initializers
5c3997d Refectors how CBMC interprets a codet thread-block
001c1a2 ireps of type "ID_atomic_begin" and "ID_atomic_end" will now be properly displayed when the "show-symbol-table" flag is specified.
d978ef9 Folder build/ ignored.
bc145fd Merge pull request diffblue#1756 from romainbrenguier/tests/index-of-corrections#TG-2246
47b4ee9 Merge pull request diffblue#1725 from cesaro/exception-handlig-fixes
d397d6a Merge pull request diffblue#1726 from diffblue/multi_ary_expr2c
bd95317 Merge pull request diffblue#1753 from diffblue/xor_exprt
1d4af6d Merge pull request diffblue#1747 from NathanJPhillips/feature/upstream-cleanup
9c7debb Merge pull request diffblue#1750 from pkesseli/feature/sat-interrupt
f11c995 Merge pull request diffblue#1749 from pkesseli/ci/remove-unapproved
981c8e0 Merge pull request diffblue#1743 from tautschnig/dump-c-fix
bcb076b Correct tests for String.indexOf
ef5c6f0 Merge pull request diffblue#1742 from owen-jones-diffblue/owen-jones-diffblue/small-shared-ptr
6c9f05e Fixes to exception handling behaviour
80dd48a added multi-ary xor_exprt
703e4a3 Remove unapproved C++11 header warning.
bf7ed1a Merge pull request diffblue#313 from diffblue/owen-jones-diffblue/add-structured-lhs-to-value-set
cc9398d Expose MiniSAT's `interrupt()`
8360233 Merge pull request diffblue#1646 from peterschrammel/list-goto-functions
e4a2763 Tests for scope changes for variables and functions
8ee1956 goto-diff tests for package name changes
ce3a5e9 Basic tests for java goto-diff
3bf9987 Compare access qualifiers in goto-diff
f71cc7f Attach class name to method symbol
1f06d35 Merge pull request diffblue#312 from diffblue/pull-support-20180112
fda9daa Cleanup of create-and-swap to emplace
e42e97a Merge commit '23666e3af35673c734c9816ffc131b6b9a379e86' into pull-support-20180112
53f1a41 Populate structured_lhs in all `entryt`s
d7121f2 dump-c: fix support of use-system-headers
eb5ec24 Merge pull request diffblue#1736 from hannes-steffenhagen-diffblue/develop_fix-bitfield-pretty-printing
7a0de46 Add comment suggested by @owen-jones-diffblue
b741d4b Use small intrusive pointer in irep
434cc99 Merge pull request diffblue#1732 from peterschrammel/catch-sat-memout
8ae53bb Merge pull request diffblue#1733 from peterschrammel/mem-limit
574101c Add `structured_lhs` field to entryt
4f1a67a Uses alternatives to get_string in type2name when possible
b46149d Merge pull request diffblue#1719 from smowton/smowton/cleanup/remove_exceptions_single_global
82a7ec6 Adds regression test for bitfield naming bug
651d8d1 Fixes use of wrong identifier when pretty printing bitfield types
638937a Merge pull request diffblue#1709 from romainbrenguier/doc/string-solver-intro
1d1be4c Move non-string-specific part of doc to solvers
549eb57 Delete trailing whitespaces
db3e044 Add introduction to string solver documentation
74be7fb Merge pull request diffblue#1729 from romainbrenguier/refactor/unused-nonempty-option
d101b22 Set memory limit utility
ef45a1d Replace assertions by invariants
84e04a7 Catch Glucose::OutOfMemoryException
89fc48d Replace assertions by invariants
5e85701 Catch Minisat::OutOfMemoryException
b8cee29 Enable list-goto-functions in clobber
d902ec8 Replace cout by message stream in show-goto-functions
d970673 Move show-loops in the right place in goto-diff
e1227ef Enable list-goto-functions in goto diff
7e1110c Enable list-goto-functions in goto-instrument
0fb4868 Enable list-goto-functions in goto-analyzer
e67abfa Remove exceptions: switch to single inflight exception global
2fabbd4 Enable list-goto-functions in JBMC
9e1705f Enable list-goto-functions in CBMC
ebd8248 Add list-goto-functions command line option
2fe43a9 Add parameter to list goto functions without printing bodies
3d492fe Add documentation of return values
5a8eea5 Remove the string-non-empty option
9810f92 Drop string_non_empty field for string refinement
fec16d7 expr2c now distinguishes binary and multi-ary expressions
d16a918 C library: network byteorder functions
05bc9ed Implement bswap in SAT back-end
4f37035 Introduce bswap_exprt

git-subtree-dir: cbmc
git-subtree-split: f7602af
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