def check_unreal(
ltl_text,
part_text,
is_moore,
ltl3ba: LTL3BA,
solver_factory: Z3SolverFactory,
min_size,
max_size,
ltl3ba_timeout_sec=None,
opt_level=0,
) -> LTS:
"""
:raise: subprocess.TimeoutException
:arg opt_level: Note that opt_level > 0 may introduce unsoundness (returns unrealizable while it is)
"""
timer = Timer()
outputs, inputs, expr = parse_acacia_and_build_expr(ltl_text, part_text, ltl3ba, opt_level)
timer.sec_restart()
automaton = ltl3ba.convert(expr, timeout=ltl3ba_timeout_sec) # note no negation
logging.info("(unreal) automaton size is: %i" % len(automaton.nodes))
logging.debug("(unreal) automaton (dot) is:\n" + automaton2dot.to_dot(automaton))
logging.debug("(unreal) automaton translation took (sec): %i" % timer.sec_restart())
encoder = create_encoder(inputs, outputs, not is_moore, automaton, solver_factory.create())
model = model_searcher.search(min_size, max_size, encoder)
logging.debug("(unreal) model_searcher.search took (sec): %i" % timer.sec_restart())
return model
def check_real(
ltl_text, part_text, is_moore, ltl3ba, solver_factory: Z3SolverFactory, min_size, max_size, opt_level=2
) -> LTS:
"""
:param opt_level: values > 0 introduce incompleteness (but it is sound: if returns REAL, then REAL)
"""
timer = Timer()
inputs, outputs, expr = parse_acacia_and_build_expr(ltl_text, part_text, ltl3ba, opt_level)
timer.sec_restart()
automaton = ltl3ba.convert(~expr)
logging.info("(real) automaton size is: %i" % len(automaton.nodes))
logging.debug("(real) automaton (dot) is:\n" + automaton2dot.to_dot(automaton))
logging.debug("(real) automaton translation took (sec): %i" % timer.sec_restart())
encoder = create_encoder(inputs, outputs, is_moore, automaton, solver_factory.create())
model = model_searcher.search(min_size, max_size, encoder)
logging.debug("(real) model_searcher.search took (sec): %i" % timer.sec_restart())
return model
