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  • #1253
Closed
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Created Feb 20, 2011 by Boris Yakobowski@byakoDeveloper

Incorrect states passed to value analysis callbacks in presence of slevel

ID0000732: This issue was created automatically from Mantis Issue 732. Further discussion may take place here.


Id Project Category View Due Date Updated
ID0000732 Frama-C Plug-in > Eva public 2011-02-20 2014-02-12
Reporter yakobowski Assigned To pascal Resolution fixed
Priority normal Severity major Reproducibility always
Platform - OS - OS Version -
Product Version Frama-C Carbon-20110201 Target Version - Fixed in Version Frama-C Nitrogen-20111001

Description :

Execute the following program with options '-val -slevel n' for n between 1 and 10001.

int p[20000]; void main () { for (int j=0;j<10000;j++) p[j]=1; }

Inspecting the values of the variable j in the gui reveals ranges of the form [n..10000], which is clearly incorrect.

Also, there is a big gap in the execution time between a fully symbolic evaluation (-slevel 10001) and a partial one (eg. -slevel 10000). This seems to be related to superposing the states in the callbacks.

Additional Information :

The bug appears between the svn revisions 11262 and 11385.

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