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C-2PO: Thesis About a Weakly-Relational Pointer Analysis #1485

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C-2PO: Thesis About a Weakly-Relational Pointer Analysis #1485

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Commits on Apr 29, 2024

  1. modified a comment

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  2. minor style choices

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Commits on May 1, 2024

  1. simplify cil conversion by using to_index

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  2. fix small thing

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  3. removed code for invertible assignments, as it is not necessary

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  4. add size parameter to may_be_equal for the ize of the lvalue

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  5. changed Congruence closure to not be generic, but only work for for v… 

    …arinfo
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  6. added type information to terms

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Commits on May 3, 2024

  1. added size of variables to the data structure; 

    added distinct dummy and return variables;
changed typ to exp as additional information for the terms, therefore simplified the function for finding the cil term starting;
fixed some bugs;
    @reb-ddm
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  2. modified some tests

    @reb-ddm
    reb-ddm committed May 3, 2024
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  3. first draft of join, haven't tested it yet

    @reb-ddm
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Commits on May 6, 2024

  1. finishe implementing join, calculate offsets correctly in join

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  2. fix bug in equal

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    reb-ddm committed May 6, 2024
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Commits on May 7, 2024

  1. better dereferencing

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  2. added tests for join

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  3. implemented disequalities

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Commits on May 9, 2024

  1. implemented remove with disequalities

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  2. only dereference disequalities if they have the same size

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  3. add test for disequalities

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  4. implemented join for disequalities

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Commits on May 13, 2024

  1. fixed bugs in startState analysis and remembered tainted variables in… 

    … return of startState
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  2. remove tainted variables in wrpointer analysis in combine_env

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  3. add function to remove tainted variables to the wrpointer domain

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  4. add taintPartialContext analysis to tests

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  5. add test for tainted variables n a function

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Commits on May 14, 2024

  1. adapted the comments

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Commits on May 17, 2024

  1. fixed bug in join and added corresponding test

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Commits on May 20, 2024

  1. made join more precise and made widen = top

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Commits on May 21, 2024

  1. handle unknown left hand sides of assignments

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  2. better calculation of dereferenced expression. Give up when it is not… 

    … possible to dereference it further.
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  3. check validity of dereferenced expressions

    @reb-ddm
    reb-ddm committed May 21, 2024
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  4. adapt enter and combine to follow the goblint assumptions

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    reb-ddm committed May 21, 2024
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  5. modify comments

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    reb-ddm committed May 21, 2024
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  6. keep all global and all reachable variables in enter

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  7. added tests for structs and recursive functions

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    reb-ddm committed May 21, 2024
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  8. remove a raise Failure

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  9. make sure that the min_repr is always defined in any case, even when … 

    …it's not possible to calculate a dereference
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Commits on May 24, 2024

  1. add descriptions

    @reb-ddm
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  2. adapted some tests

    @reb-ddm
    reb-ddm committed May 24, 2024
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  3. fix bug when computing minimal representatives

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    reb-ddm committed May 24, 2024
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  4. fix linter warnings

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    reb-ddm committed May 24, 2024
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  5. Merge branch 'master' into thesis-weakly-relational-pointer

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  6. add startcontext

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  7. rename tests

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  8. added conf file for svcomp and fixed a bug

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Commits on Jun 10, 2024

  1. fixed invalid widen bug

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Commits on Jun 11, 2024

  1. added constant bitsSizeOfPtr

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  2. Merge branch 'temp' into thesis-weakly-relational-pointer

    @reb-ddm
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  3. check for each term, if it is a valid pointer

    @reb-ddm
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  4. remove types from data structure

    @reb-ddm
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  5. check for propositions *x = *y if the pointers x and y are equal (suc… 

    …h that it works even when x and y are pointers to int and we don't store equalities about ints)
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  6. adapt test case to new type handling

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Commits on Jun 12, 2024

  1. fix error: top of IntDomTuple not supported

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  2. fix error: cil sizeoferror

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    reb-ddm committed Jun 12, 2024
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  3. better way of fixing the error

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    reb-ddm committed Jun 12, 2024
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  4. fix out of memory error. It was because I used < instead of T.compare

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Commits on Jun 13, 2024

  1. fix error when there s an array of non-constant length

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  2. fixed bug with disequations

    @reb-ddm
    reb-ddm committed Jun 13, 2024
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  3. fix sizeoferror and not_found error

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  4. fixed bug where the auxiliary variable is not completely removed from… 

    … the domain
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  5. fixed division by zero error and some wrong comparisons

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Commits on Jun 17, 2024

  1. add small test for disequalities

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  2. properly update the disequalities after a union operation. Use the mi… 

    …n_repr instead of the representatives in order to represent the disequalities in the normal form.
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  3. solved last remaining SizeOfErrors

    @reb-ddm
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  4. use correct compare function

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  5. add regressio test for the compare function bug

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Commits on Jun 18, 2024

  1. fixed inconsistency in disequalities

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  2. removed warning for Field on a non-compound

    @reb-ddm
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  3. fix issue where startstate answers queries about variables that were … 

    …not created by wrpointer
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  4. I'm not sure what to write for the thread functions

    @reb-ddm
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  5. catch sizeOfError

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  6. made Lookup Map with just one successor, as it was in the beginning

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Commits on Jun 19, 2024

  1. new method of restricting the automaton

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Commits on Jun 20, 2024

  1. ignore floats and catch an exception

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Commits on Jun 21, 2024

  1. fix bugs with offsets

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Commits on Jun 24, 2024

  1. add conf file for base analysis with which we can compare wrpointer

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  2. add tracing for get_normal_form

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  3. Merge branch 'thesis-weakly-relational-pointer' into thesis-wrpointer… 

    …-restriction
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  4. made sure to always just add pointers to the data structure

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Commits on Jun 25, 2024

  1. fixed bug in find of union-find

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  2. properly update offset of long integers

    @reb-ddm
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  3. add regression test for widen

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  4. revert wrong fix

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  5. adapt test case

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  6. replace Z.of_int 1 with Z.one

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  7. remove var-eq analysis from conf file

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  8. intersect answers of MayPointTo query for equal pointers

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Commits on Jun 28, 2024

  1. implicitly assume that &x != &y

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  2. implicitly assume that &x != &y

    @reb-ddm
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  3. Merge branch 'thesis-weakly-relational-pointer' of github.com:reb-ddm… 

    …/analyzer into thesis-weakly-relational-pointer
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  4. started implementing auxiliaries, but it doesn't quite work yet

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  5. solved exception, maybe not in the best possible way

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Commits on Jun 30, 2024

  1. don't answer maypointto query any more

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  2. only add valid terms when we add successor terms

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Commits on Jul 1, 2024

  1. fix regression test

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Commits on Jul 2, 2024

  1. fix compare function of propositions and is_struct_type function

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  2. Merge branch 'thesis-weakly-relational-pointer' into thesis-wrpointer… 

    …-auxiliary
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  3. add auxiliaries to to_cil

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Commits on Jul 3, 2024

  1. Shortcut equal

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    michael-schwarz committed Jul 3, 2024
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  2. Shortcut join

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  3. Short circuit meet

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    michael-schwarz committed Jul 3, 2024
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  4. Reuse var

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    michael-schwarz committed Jul 3, 2024
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  5. Optimize some calls

    @michael-schwarz
    michael-schwarz committed Jul 3, 2024
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  6. New find_successor_in_set

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Commits on Jul 4, 2024

  1. support an additional type of dereferencing

    @reb-ddm
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  2. Merge branch 'thesis-weakly-relational-pointer' of github.com:reb-ddm… 

    …/analyzer into thesis-weakly-relational-pointer
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  3. fixed indentation

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  4. add first code for block disequalities

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  5. added block diseq handling for malloc

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  6. add remove for block disequalities

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  7. implemented equal for block diseqs

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  8. add join for block disequalities

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  9. update the representatives of block disequalities

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Commits on Jul 5, 2024

  1. add meet for block disequalities

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  2. add meet for block disequalities

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  3. Merge branch 'thesis-weakly-relational-pointer' into thesis-wrpointer… 

    …-auxiliary
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  4. may point to query for all elements in the equivalence class

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  5. fixed bug with Casts and auxiliaries and made join more elegant

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  6. fixed may_point_to and implemented query for all elements in equivale… 

    …nce class
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  7. fix bug that comes from the fact that block disequalities can possibl… 

    …y contain terms that are not in the union find
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  8. removed some unused rec flags

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  9. Merge branch 'master' into thesis-weakly-relational-pointer

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  10. moved union find to another file

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  11. copy the whole wrpointer analysis and give it another name

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  12. removed everything that has to do woth minimal representatives from c2po

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  13. added exactly the same tests as the wrpointer tests also to c2po. The… 

    …y work for now because I still haven't modified the implementation of of removing the terms
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  14. simplified the jooin operation

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  15. I think I implemented the simplified restriction. I'll have to look a… 

    …t it again
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Commits on Jul 6, 2024

  1. implemented equality for c2po

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  2. replaced wrpointer with c2po for the tracing

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  3. updated tests for c2po

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  4. added conf file for c2po

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  5. update comments and make some order

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  6. fixed name of test folder

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  7. make it configurable if we want to use maypointto for c2po or not. Up… 

    …date regression tests by setting this to false for the tests that work also without maypointto. Also added conf file for c2po without maypointto
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  8. made a single-threaded analysis lifter

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  9. fix equality function of c2po

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  10. (really) fixed equality

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  11. put back old version of restriction, where we add successors, because… 

    … the prof described something similar in the paper
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  12. is_root now works also with elements that are not in the uf

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Commits on Jul 7, 2024

  1. implemented widen and narrow

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  2. some shortcuts, maybe they help

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  3. reswitched to the new version of restricting. Because the prof wrote … 

    …in the paper that we can just substitute subexpressions, and this corresponds basically to the version of restricting, that wrpointer used. Also, the version that was currently implemented was buggy, because the lookup map has only one successor, before it had more than one.
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  4. removed all code duplication, but I also removed min_repr, so I will … 

    …have to add it again later
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  5. use MustBeSingleThreaded instead of IsEverMultithreaded

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  6. move the short-circuit after the match

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  7. fix is_top: now it takes into account the disequalities

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  8. fix code

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Commits on Jul 8, 2024

  1. moved MayBeEqual to CongruenceClosure.ml

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  2. merged wrpointerDomain with c2poDomain

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  3. merge wrpointerAnalysis and c2poAnalysis

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  4. rename everything to c2po

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  5. add configurations for choosing which join and which equal algorithm … 

    …should be used
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  6. update tracing

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  7. fix the join and widen etc. It was because I didn't explicitly write … 

    …the parameters of the function,...
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  8. use --enable instead of --set

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Commits on Jul 9, 2024

  1. fix unsound behaviour

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  2. fix arithmeticonintegerbot and invalid_widen

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  3. change tracing a bit

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  4. fix block disequality query

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  5. implemented Invariant

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  6. implemented Invariant

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  7. remove unused rec flag

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  8. Horrible, horrible fix. May the gods forgive us!

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Commits on Jul 10, 2024

  1. add conf file for the tests with witnesses

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  2. changed my mind

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  3. now I'm the only one that answers the invariant query

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Commits on Jul 14, 2024

  1. fix invariant

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Commits on Jul 15, 2024

  1. Revert "now I'm the only one that answers the invariant query" 

    This reverts commit 887ab98.
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  2. removed unused function and added tracing

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  3. merge changes

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  4. fix name of function

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  5. use get_conjunction instead of get_noemal_form for meet

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  6. fix indentation

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Commits on Jul 16, 2024

  1. re-add min_repr, but it doesn't quite work yet

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  2. remove init_congruence

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Commits on Jul 17, 2024

  1. add some tracing

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  2. fix bug when adding disequalities

    @reb-ddm
    reb-ddm committed Jul 17, 2024
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  3. fix join; less code duplication

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  4. always first update block disequalities and then normal disequalities

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  5. remove some TODOs

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  6. make code for element_closure a bit better

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  7. simplify removal of block disequalities

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  8. maybe fixed combine_env?

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  9. optimize minimal representatives

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Commits on Jul 18, 2024

  1. less code duplication for get_normal_form

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  2. simplify insertion a bit

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  3. add calloc and alloca and realloc to special

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  4. removed unused things

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  5. forget var information in special

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Commits on Jul 25, 2024

  1. no need to calculate the closure of disequalities after an insertion … 

    …(I think)
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Commits on Jul 29, 2024

  1. fixed enter/combine

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  2. fixed realloc

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  3. Merge with the other branch where I have been coding

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  4. rename module to c2po

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  5. made normal form a lazy record field

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  6. fixed warning

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  7. recompute min_repr in the appropriate places

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  8. indentation

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  9. add tracing

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  10. a bit more path compression

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  11. restore find_no_pc

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  12. Timing.wrap

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Commits on Jul 30, 2024

  1. solved invariant bug in a better way

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  2. ask MayBeTainted in combine_env instead of start State

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  3. remove the weird hack I put in startState

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  4. simplify redundant definitions in startState

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  5. Merge branch 'master' into thesis-weakly-relational-pointer

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Commits on Jul 31, 2024

  1. disable unknown_function.call for c2po conf

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  2. added different conf files for the 4 possibilities of c2po

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  3. fixed lazy computation and added timings.wrap

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Commits on Aug 1, 2024

  1. added a widen operator for the join with automaton as described in my… 

    … masters thesis
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Commits on Aug 2, 2024

  1. fixed bug in normal form

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Commits on Aug 5, 2024

  1. fix invalid_widen bug

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Commits on Aug 7, 2024

  1. outsource variable handling

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  2. make everything compatible with the new duplicated vars

    @reb-ddm
    reb-ddm committed Aug 7, 2024
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  3. replace wrpointer with c2po

    @reb-ddm
    reb-ddm committed Aug 7, 2024
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  4. fixed bugs. Needs to be tested

    @reb-ddm
    reb-ddm committed Aug 7, 2024
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  5. fix some things

    @reb-ddm
    reb-ddm committed Aug 7, 2024
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  6. add Var.

    @reb-ddm
    reb-ddm committed Aug 7, 2024
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  7. I think this is not necessary

    @reb-ddm
    reb-ddm committed Aug 7, 2024
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  8. use the other method for variable duplication

    @reb-ddm
    reb-ddm committed Aug 7, 2024
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  9. rename shadow to duplicated

    @reb-ddm
    reb-ddm committed Aug 7, 2024
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  10. fix indentation

    @reb-ddm
    reb-ddm committed Aug 7, 2024
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  11. remove some unused functions and add some comments

    @reb-ddm
    reb-ddm committed Aug 7, 2024
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  12. remove useless module

    @reb-ddm
    reb-ddm committed Aug 7, 2024
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  13. add some comments and adapt the structure of the code

    @reb-ddm
    reb-ddm committed Aug 7, 2024
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Commits on Aug 8, 2024

  1. update comments

    @reb-ddm
    reb-ddm committed Aug 8, 2024
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  2. adress -> address

    @reb-ddm
    reb-ddm committed Aug 8, 2024
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  3. Merge branch 'master' into thesis-weakly-relational-pointer

    @reb-ddm
    reb-ddm committed Aug 8, 2024
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Commits on Aug 13, 2024

  1. remove unused polymorphism

    @reb-ddm
    reb-ddm committed Aug 13, 2024
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  2. remove redundant compare

    @reb-ddm
    reb-ddm committed Aug 13, 2024
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  3. use Cilfacade.isFloatType snf Cil.unrollType

    @reb-ddm
    reb-ddm committed Aug 13, 2024
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  4. change error to TypoOfError

    @reb-ddm
    reb-ddm committed Aug 13, 2024
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  5. explain better what singleThreadedLifter is for

    @reb-ddm
    reb-ddm committed Aug 13, 2024
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  6. do not recompute compare

    @reb-ddm
    reb-ddm committed Aug 13, 2024
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Commits on Sep 9, 2024

  1. fix invariant generation bug

    @reb-ddm
    reb-ddm committed Sep 9, 2024
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  2. remove confs

    @reb-ddm
    reb-ddm committed Sep 9, 2024
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  3. Revert "Horrible, horrible fix. May the gods forgive us!" 

    This reverts commit 8173b99.
    @reb-ddm
    reb-ddm committed Sep 9, 2024
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  4. derive equality of propositions

    @reb-ddm
    reb-ddm committed Sep 9, 2024
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Commits on Sep 10, 2024

  1. use Lattice.LiftBot

    @reb-ddm
    reb-ddm committed Sep 10, 2024
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  2. catch exception

    @reb-ddm
    reb-ddm committed Sep 10, 2024
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  3. implemented pretty_diff

    @reb-ddm
    reb-ddm committed Sep 10, 2024
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  4. remove debug print

    @reb-ddm
    reb-ddm committed Sep 10, 2024
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  5. make precise_join an enum

    @reb-ddm
    reb-ddm committed Sep 10, 2024
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  6. make normal_form an enum

    @reb-ddm
    reb-ddm committed Sep 10, 2024
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  7. fix bug

    @reb-ddm
    reb-ddm committed Sep 10, 2024
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  8. change the location od c2poAnalysis in Goblint_lib

    @reb-ddm
    reb-ddm committed Sep 10, 2024
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Commits on Sep 11, 2024

  1. modify richvarinfo to make it possible to change all the other fields… 

    … of the resulting varinfo
    @reb-ddm
    reb-ddm committed Sep 11, 2024
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Commits on Sep 22, 2024

  1. Merge branch 'master' into thesis-weakly-relational-pointer

    @michael-schwarz
    michael-schwarz committed Sep 22, 2024
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