## Early problem detection

The data-based synthesis tool checks the specification for common issues, for early detection of problems that will lead to an empty supervisor. If such a problem is detected, a warning is printed to the console. Among others, checks are included for no initial states/variables, no marked states, and no states due to the state requirement invariants.

The tool also checks whether there are events that are never enabled in the input specification. If such a problem is detected, a warning is printed to the console. Among others, checks are included for events that are forbidden by automaton guards, event/state exclusion plant and requirement invariants, and state plant invariants.

The tool furthermore checks for plant invariants or plant automata that reference requirement state. If such a problem is detected, a warning is printed to the console. Among others, references in guards, updates, invariant predicates, initialization predicates, marker predicates and initial values for discrete variables are detected.