Skip to content
GitLab
Projects Groups Topics Snippets
  • /
  • Help
    • Help
    • Support
    • Community forum
    • Submit feedback
    • Contribute to GitLab
  • Sign in
  • F frama-c
  • Project information
    • Project information
    • Activity
    • Labels
    • Members
  • Repository
    • Repository
    • Files
    • Commits
    • Branches
    • Tags
    • Contributor statistics
    • Graph
    • Compare revisions
  • Issues 168
    • Issues 168
    • List
    • Boards
    • Service Desk
    • Milestones
  • Merge requests 0
    • Merge requests 0
  • Deployments
    • Deployments
    • Releases
  • Packages and registries
    • Packages and registries
    • Container Registry
    • Model experiments
  • Monitor
    • Monitor
    • Incidents
  • Analytics
    • Analytics
    • Value stream
    • Repository
  • Wiki
    • Wiki
  • Activity
  • Graph
  • Create a new issue
  • Commits
  • Issue Boards
Collapse sidebar
  • pub
  • frama-c
  • Issues
  • #2082

14403: last slicing bug (csmith)

ID0000905: This issue was created automatically from Mantis Issue 905. Further discussion may take place here.


Id Project Category View Due Date Updated
ID0000905 Frama-C Plug-in > slicing public 2011-07-31 2011-12-19
Reporter pascal Assigned To Anne Resolution fixed
Priority normal Severity minor Reproducibility have not tried
Platform - OS - OS Version -
Product Version Frama-C GIT, precise the release id Target Version - Fixed in Version Frama-C Nitrogen-20111001

Description :

The value analysis does not find any alarm and finds the values below

~/ppc/bin/toplevel.opt -val-signed-overflow-alarms -no-val-show-progress -cpp-command "gcc -m32 -E -C -I runtime -D__FRAMAC" -no-results -slevel 100000 -machdep x86_32 s.31013054.p.c -val

[value] Called Frama_C_show_each({3781742995}) [value] Called Frama_C_show_each({4095739724}) [value] Called Frama_C_show_each({550094235}) [value] Called Frama_C_show_each({252820852}) [value] Called Frama_C_show_each({624713289}) [value] Called Frama_C_show_each({1426802424}) [value] Called Frama_C_show_each({397183221}) [value] Called Frama_C_show_each({320991826}) [value] Called Frama_C_show_each({1015897994}) [value] Called Frama_C_show_each({3069753974}) [value] Called Frama_C_show_each({4276963908}) [value] Called Frama_C_show_each({1968234281}) [value] Called Frama_C_show_each({1968234281})

Executing (32-bit) finds the same values as above.

But the program sliced with:

~/ppc/bin/toplevel.opt -val-signed-overflow-alarms -no-val-show-progress s.31013054.p.i -slice-calls Frama_C_show_each -slevel 5000 -slevel-function crc32_gentab:0 -then-on 'Slicing export' -print -ocode res.c

$ gcc -m32 res.c show_each.c $ ./a.out [value] Called Frama_C_show_each({3781742995}) [value] Called Frama_C_show_each({4095739724}) [value] Called Frama_C_show_each({550094235}) [value] Called Frama_C_show_each({252820852}) [value] Called Frama_C_show_each({624713289}) [value] Called Frama_C_show_each({1426802424}) [value] Called Frama_C_show_each({397183221}) [value] Called Frama_C_show_each({320991826}) [value] Called Frama_C_show_each({1015897994}) [value] Called Frama_C_show_each({1148365541}) [value] Called Frama_C_show_each({3051573531}) [value] Called Frama_C_show_each({2309422687}) [value] Called Frama_C_show_each({2309422687})

Additional Information :

Le bug a pris 36h * 5 processeurs pour se montrer, ce sera presque sûrement le dernier, sauf si tu en introduis un nouveau en corrigeant celui-ci :)

1015897994 est la dernière valeur correcte. Cela indique une différence dans la valeur finale de g_89[2].

Attachments

  • p.tgz
To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information
Assignee
Assign to
Time tracking