A repository of correct and incorrect automata in HOA format.
You can find the latest version of this repository at https://github.com/adl/hoaf-tests/
This collection of automata in the HOA format is intended to provide
- examples of the various features of the HOA format
- examples of corner-cases in the format
- automata that are invalid in specific ways to enabled testing of parsers
One aim is to serve as a test suite for HOAF parsers.
The automata/ sub-directory contains a variety of automata:
|Directory||Description / Test Goal|
|format-spec-v1||Example automata from the format specification|
|syntax||Various aspects of the HOA syntax|
The scripts/ sub-directory contains scripts that can be used for testing parsers and automata translators.
to read the manual.
To allow for the automated testing of HOAF parsers and manipulation tools, the automata can be annotated using comments at the start of the file:
/** HOA-TEST: VALID */ /** HOA-TEST: INVALID */ /** HOA-TEST: TRICKY */
VALID signifies that the following automaton should be accepted by a
fully-features HOA parser.
INVALID signifies that the following automaton has syntax errors or violates
the HOA format in some other way (e.g. by specifying not applicable properties).
It should be rejected by a fully-featured HOA parser.
TRICKY signifies that the following automaton has issues that would justify
a parser to reject the automaton as invalid. In contrast to
INVALID, these issues
might be difficult to detect. For example, the automaton might have
'properties: stutter-invariant' without actually being stutter-invariant, which
requires heavy automata-based algorithms to detect. A fully-featured HOA parser
that does not rely on more advanced analysis algorithms would not be expected
VALID automata, the language of the automaton can be specified as follows:
/** HOA-LANGUAGE(syntax): formula */
syntax identifies the syntax of the form, examples would be
||formula in LBT(T) prefix format|
||formula in Spot format|
||formula in Spin format|
By providing the language, tools may attempt to verify that the parsed automaton actually matches the language.