--- layout: fc_discuss_archives title: Message 51 from Frama-C-discuss on April 2013 ---
Ok, something really weird is happening. With z3 i'm able to prove everything that i previously was not able. Either the POs always have been correct and WP was limited, or why/z3 is experiencing some strange behavior. I believe it's the latter On a side note related to the new memory model. What implications arise from using the unsafe casts option? 2013/4/19 Cristiano Sousa <cristiano.sousa126 at gmail.com> > Thanks, > > the patch file however tries to patch various files in src/wp/test that do > not exists (at least in the public release). Removing that solves the > problem and why works again with the following warnings: > > File "/Users/xxxx/.frama-c-wp/typed/Axiomatic.why", line 16, characters > 8-11: unused variable x_0 > File > "/Users/xxxx/.frama-c-wp/project.session/../typed/strlen_Why3_ide.why", > line 22, characters 6-9: unused variable x_0 > File > "/Users/xxxx/.frama-c-wp/project.session/../typed/strlen_Why3_ide.why", > line 65, characters 6-9: unused variable x_1 > File > "/Users/xxxx/.frama-c-wp/project.session/../typed/strlen_Why3_ide.why", > line 64, characters 6-9: unused variable x_0 > File > "/Users/xxxx/.frama-c-wp/project.session/../typed/strlen_Why3_ide.why", > line 108, characters 6-9: unused variable x_0 > File > "/Users/xxxx/.frama-c-wp/project.session/../typed/strlen_Why3_ide.why", > line 141, characters 6-9: unused variable x_0 > File > "/Users/xxxx/.frama-c-wp/project.session/../typed/strlen_Why3_ide.why", > line 186, characters 6-9: unused variable x_0 > File > "/Users/xxxx/.frama-c-wp/project.session/../typed/strlen_Why3_ide.why", > line 223, characters 6-9: unused variable x_0 > > http://pastebin.com/ckjLNaGZ > > curiously z3 is able to successfully prove everything in the original code > (without the addition of BASE and END) > > > 2013/4/19 Lo?c Correnson <loic.correnson at cea.fr> > >> Missing an include. >> >> >> >> Le 19 avr. 2013 ? 16:41, Cristiano Sousa a ?crit : >> >> Hi, >> >> >> 2013/4/19 Lo?c Correnson <loic.correnson at cea.fr> >> >>> Thanks for the bug report. >>> Current status : >>> >>> 1. pointer comparison is actually missing in Why3 resources ; >>> 2. pointer difference is incorrectly translated in WP ; >>> >> >> Even with the patch applied, is why3 still not supposed to work? >> >> Error while reading file '../typed/strlen_Why3_ide.why': File >> "/usr/local/share/frama-c/wp/memory.why", line 36, characters 36-40: >> Unbound symbol 'bool' >> >> -- >> Regards, >> Cristiano Sousa >> _______________________________________________ >> Frama-c-discuss mailing list >> Frama-c-discuss at lists.gforge.inria.fr >> http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/frama-c-discuss >> >> >> >> _______________________________________________ >> Frama-c-discuss mailing list >> Frama-c-discuss at lists.gforge.inria.fr >> http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/frama-c-discuss >> > > > > -- > Cumprimentos, > Cristiano Sousa > -- Cumprimentos, Cristiano Sousa -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.gforge.inria.fr/pipermail/frama-c-discuss/attachments/20130419/86ecd1d0/attachment.html>