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https://github.com/AzeezDa/ceetle

A Rust Library for defining models in Computational Tree Logic and verifying their semantics
https://github.com/AzeezDa/ceetle

ctl logic rust verification

Last synced: 3 months ago
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A Rust Library for defining models in Computational Tree Logic and verifying their semantics

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# `ceetle` - A Computional Tree Logic Verifier
A Rust Library for defining models in Computational Tree Logic and verifying their semantics. See [Wikipedia](https://en.wikipedia.org/wiki/Computation_tree_logic) to learn more.

The library is **passively-maintained**, which means there will be no other features added however issues on the GitHub will be answered and solved.
Contributions and feedback to this library are more than welcome!

## Examples
Consider the figure below.

![Finite State Machine](/images/fsm.png)

To build it as a model in the library we do this:

```rust
use ceetle::{HashedDiscreteModel, ctl, CTLFormula, verify};

let model = HashedDiscreteModel::new(HashMap::from_iter(vec![
// (state, (atoms, transitions))
("s0", (vec!["p", "q"], vec!["s1"])),
("s1", (vec!["p"], vec!["s0", "s3"])),
("s2", (vec!["p", "q"], vec!["s2"])),
("s3", (vec!["p", "r", "s"], vec!["s2"]))
]));
```

To verify the formula $S_0\models \text{AG}(p)$, we do:
```rust
verify(&model, &"s0", &ctl!(AG(Atom("p")))); // Evaluates to true
```

To verify the formula $S_0 \models \text{EF(AG}(p \land q))$, we do:

```rust
verify(&model, &"s0", &ctl!(EF(AG(And(Atom("p"), Atom("q")))))); // Evaluates to true
```