Emitted assertion wrongly reduces to bottom (apparently) (csmith)
ID0001024: This issue was created automatically from Mantis Issue 1024. Further discussion may take place here.
| Id | Project | Category | View | Due Date | Updated |
|---|---|---|---|---|---|
| ID0001024 | Frama-C | Plug-in > Eva | public | 2011-11-19 | 2014-02-12 |
| Reporter | pascal | Assigned To | yakobowski | Resolution | fixed |
| Priority | normal | Severity | major | Reproducibility | always |
| Platform | - | OS | - | OS Version | - |
| Product Version | Frama-C Nitrogen-20111001 | Target Version | Frama-C Oxygen-20120901 | Fixed in Version | Frama-C Oxygen-20120901 |
Description :
Soundness bug, probably caused by wrong reduction on emitted assertions.
~/ppc/bin/toplevel.opt -slevel 5 -slevel-function main:0 -no-results -val-signed-overflow-alarms -cpp-command "gcc -C -E -Iruntime -m32 " a.c -precise-unions -val ... a.c:236:[value] Assertion got status invalid (stopping propagation). [value] Recording results for func_1 [value] Done for function func_1 [value] Recording results for main [value] done for function main [value] ====== VALUES COMPUTED ======
L'analyse avec -slevel 5 dit que la fin du programme et le Frama_C_dump... n'est pas atteint. Pourtant, il l'est comme le montre l'analyse avec -slevel 5000000:
~/ppc/bin/toplevel.opt -slevel 5000000 -slevel-function main:0 -no-results -val-signed-overflow-alarms -cpp-command "gcc -C -E -Iruntime -m32 " a.c -precise-unions -val ...
&& *(unsigned short*)&g_1113 == 65535)
End of Frama_C_dump_assert_each output[value] Recording results for main [value] done for function main [value] ====== VALUES COMPUTED ======