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| ID | Project | Category | View Status | Date Submitted | Last Update |
| 0002471 | Frama-C | Plug-in > wp | public | 2019-08-13 18:54 | 2020-02-17 18:08 |
|
| Reporter | abakst | |
| Assigned To | correnson | |
| Priority | normal | Severity | major | Reproducibility | always |
| Status | closed | Resolution | fixed | |
| Platform | | OS | macOS | OS Version | 10.14 |
| Product Version | Frama-C 19-Potassium | |
| Target Version | | Fixed in Version | Frama-C 20-Calcium | |
|
| Summary | 0002471: frama-c/wp generates invalid why3 |
| Description | There appears to be an issue with some of the `why3` files that get generated from user axiomatic definitions. I've installed `frama-c` using the `nix-pkgs` on the master branch, and hence have version `19.0`, and `why3` version `1.2.0`.
```c
/*@ axiomatic maps { type model_digit = octet | sextet;
logic integer foo(model_digit i);
}
*/
int foo() {
//@assert \forall int i; i == foo(octet);
return 0;
}
```
Given the (silly) program above in `simple.c`, I get the following behavior
```bash
$ frama-c -wp -wp-prover z3-ce simple.c
[kernel] Parsing simple.c (with preprocessing)
[wp] Warning: Missing RTE guards
[wp] 1 goal scheduled
[wp] WPOUT/typed/A_maps.why:13: User Error: why3 syntax error
[wp] [z3-ce] Goal typed_foo_assert : Failed
why3 syntax error
[wp] Proved goals: 0 / 1
Why3 (z3-ce): 0 (failed: 1)
[wp] User Error: Deferred error message was emitted during execution. See above messages for more information.
[kernel] Plug-in wp aborted: invalid user input.
```
The A_maps.why file contains:
```
(* ---------------------------------------------------------- *)
(* --- Axiomatic 'maps' --- *)
(* ---------------------------------------------------------- *)
theory A_maps
use bool.Bool
use int.Int
use int.ComputerDivision
use real.RealInfix
use Qed.Qed
use int.Abs as IAbs
use map.Map
type a_model_digit | c_octet | c_sextet
function l_foo a_model_digit : int
end
```
The error seems to be on the line (I'd imagine there should be an '=' but I am not a why3 user)
```
type a_model_digit | c_octet | c_sextet
``` |
| Steps To Reproduce | Copy the C source into a new file, simple.c, and attempt to run the command:
frama-c -wp -wp-prover z3-ce simple.c |
| Tags | No tags attached. |
|
| Attached Files |  bug.c [^] (191 bytes) 2019-09-30 17:21 [Show Content] [Hide Content]/*@ axiomatic maps {
type model_digit = octet | sextet;
logic integer foo(model_digit i);
}
*/
int foo()
{
//@assert \forall int i; i == foo(octet);
return 0;
}
|
|
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