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  • #543
Closed
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Issue created Jul 04, 2011 by Boris Yakobowski@byakoDeveloper

Widen hints for a variable should not influence the values for other variables

ID0000876: This issue was created automatically from Mantis Issue 876. Further discussion may take place here.


Id Project Category View Due Date Updated
ID0000876 Frama-C Plug-in > Eva public 2011-07-04 2016-01-26
Reporter yakobowski Assigned To yakobowski Resolution fixed
Priority normal Severity minor Reproducibility always
Platform - OS - OS Version -
Product Version Frama-C Carbon-20110201 Target Version - Fixed in Version Frama-C Magnesium

Description :

With the widen hint below, Value finds the range i ? [30..127] for i. Without the hint, the completely precise value {30} is found. The hint for 'next' should not degrade the results for 'i'.

int max = 25; int next = 0;

void main () { /*@ loop pragma WIDEN_HINTS next, 24; */ for (int i=0;i<30;i++) { int vsize = max; int vnext = next;

if(vsize > vnext)
  next++;

} }

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