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  • #354

Closed
Open
Created Mar 13, 2017 by Jochen Burghardt@burghardt

signature axiom omitted in Coq and Alt-ergo translation

ID0002292: This issue was created automatically from Mantis Issue 2292. Further discussion may take place here.


Id Project Category View Due Date Updated
ID0002292 Frama-C Plug-in > wp public 2017-03-13 2017-03-16
Reporter Jochen Assigned To correnson Resolution open
Priority normal Severity minor Reproducibility always
Platform Silicon-20161101 OS xubuntu OS Version -
Product Version Frama-C 14-Silicon Target Version - Fixed in Version -

Description :

Running "frama-c -wp -wp-prover cvc4 -wp-prover alt-ergo -wp-prover coq -wp-script wp0.script -wp-prop incAdd input_it.c" on the attached file generates an insufficient translation to Coq: There is a clause "Parameter L_add : S1__Iter -> Z -> S1__Iter." in file "lemma_incAdd_Coq.v", but no corresponding "Hypothesis Q_TL_add". Both clauses are needed to describe the signature of the Acsl logic function "add". The hypothesis "Q_TL_add" would be needed in the Coq proof (see out-commented lines in file "wp0.script"). For the Acsl function "inc", which is defined in a different "axiomatic" block, both signature description clauses (viz. "Parameter L_inc" and "Hypothesis Q_TL_inc") are contained in file "A_IterAxioms.v".

When considering the output to Alt-Ergo, viz. file "lemma_incAdd_Alt-Ergo.mlw", the same problem appears: there is a declaration "logic L_inc" in line 606, an "axiom Q_TL_inc" in line 610, a declaration "logic L_add" in line 632, but no corresponding "axiom Q_TL_add".

When considering the output to Why3, everything appears to be ok: in file "A_addAxioms.why", both "function l_add" and "axiom Q_TL_add" is found, and in file "A_IterAxioms.why", both "function l_inc" and "axiom Q_TL_inc" is found.

Attachments

  • input_it.c
  • wp0.script
  • lemma_incAdd_Coq.v
  • A_IterAxioms.v
  • lemma_incAdd_Alt-Ergo.mlw
  • A_addAxioms.why
  • A_IterAxioms.why
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