def diverging_symbs(menv: msat_env) -> frozenset:
    real_type = msat_get_rational_type(menv)
    delta = msat_declare_function(menv, delta_name, real_type)
    delta = msat_make_constant(menv, delta)
    return frozenset([delta])
def diverging_symbs(menv: msat_env) -> frozenset:
    real_type = msat_get_rational_type(menv)
    delta = msat_declare_function(menv, delta_name, real_type)
    delta = msat_make_constant(menv, delta)
    return frozenset([delta])