ID0002127: **This issue was created automatically from Mantis Issue 2127. Further discussion may take place here.** --- | **Id** | **Project** | **Category** | **View** | **Due Date** | **Updated** | | --- | --- | --- | --- | --- | --- | | ID0002127 | Frama-C | Plug-in > wp | public | 2015-06-04 | 2016-01-26 | | | | | | | | | --- | --- | --- | --- | --- | --- | | **Reporter** | loic | **Assigned To** | correnson | **Resolution** | fixed | | **Priority** | normal | **Severity** | minor | **Reproducibility** | always | | **Platform** | Linux | **OS** | Ubuntu | **OS Version** | 12.04.5 LTS | | **Product Version** | - | **Target Version** | - | **Fixed in Version** | Frama-C Magnesium | ### Description : Nitrogen-20111001 alt-ergo 0.94 The following assertion cannot be proven. void arithmetic_testcase(unsigned i) { /*@ assert i <= (unsigned) -10 ==> i + 9 <= (unsigned) -1; */ } ### Steps To Reproduce : frama-c -wp -wp-ret for the code above (also as attachment). ## Attachments - [arithmetic_testcase.c](/uploads/23e6a21720bcbac1cbefa9b6bfa47303/arithmetic_testcase.c)