def arbitrary_init_machine(root, env, mch, solution_file_read=False):
bstates = set_up_constants(root, env, mch, solution_file_read)
if len(bstates)>0:
env.state_space.add_state(bstates[0])
bstates = exec_initialisation(root, env, mch, solution_file_read)
if len(bstates)>0:
env.state_space.add_state(bstates[0])
def run_model_checking_mode(argv):
print "\033[1m\033[91mWARNING\033[00m: model checking still experimental"
root, env, parse_object, solution_file_present = startup(argv, offset=1)
if not isinstance(parse_object, BMachine):
print "Error: only model checking of b machines"
return -1
assert isinstance(parse_object, BMachine) # 6. typecheck
type_check_root_bmch(root, env, parse_object) # also checks all included, seen, used and extend
mch = parse_object
bstates = set_up_constants(root, env, mch, solution_file_read=False) # also evals properties
# TODO: implement setup non determinism
if len(bstates)==1:
env.state_space.set_current_state(bstates[0])
elif len(bstates)>1:
print "WARNING: non det. set up constants not supported yet"
return -1
bstates = exec_initialisation(root, env, mch, solution_file_read=False)
# TODO: volvo example 0 instead of 2 states
for bstate in bstates:
if not env.state_space.is_seen_state(bstate):
env.state_space.set_current_state(bstate)
if not mch.has_invariant_mc:
print "WARNING: no invariant present"
return -1
return _run_model_checking_mode(env, mch)
def run_checking_mode():
env = Environment() # 1. create env.
file_name_str, solution_file_name_str = read_input_string(argv, 1) # 2. read filenames
ast_string, error = file_to_AST_str_no_print(file_name_str) # 3. parse input-file to string
if error:
print error
#env.set_search_dir(file_name_str)
root = str_ast_to_python_ast(ast_string) # 4. parse string to python ast TODO: JSON
#if solution_file_name_str: # 5. parse solution-file and write to env.
# read_solution_file(env, solution_file_name_str) # The concreate solution values are added at
# the bmachine object-init time to the respective mch
# 6. replace defs and extern-functions inside mch and solution-file (if present)
parse_object = remove_defs_and_parse_ast(root, env) # 7. which kind of ast?
if not isinstance(parse_object, BMachine): # #PREDICATE or #EXPRESSION
result = interpret(parse_object.root, env) # eval predicate or expression
print result
else:
assert isinstance(parse_object, BMachine) # 8. typecheck
type_check_root_bmch(root, env, parse_object) # also checks all included, seen, used and extend
mch = parse_object
#solution_file_read = not solution_file_name_str==""
bstates = set_up_constants(root, env, mch, solution_file_read=False) # also evals properties
if not bstates==[]:
bool = True
for bstate in bstates:
env.state_space.add_state(bstate)
#if mch.has_properties_mc:
# assert interpret(mch.aPropertiesMachineClause, env)
init_bstates = exec_initialisation(root, env, mch, not solution_file_name_str=="")
for init_bstate in init_bstates:
env.state_space.add_state(init_bstate)
if mch.has_invariant_mc:
w_bool = interpret(mch.aInvariantMachineClause, env)
bool = bool and w_bool.bvalue
env.state_space.undo()
if mch.has_assertions_mc:
interpret(mch.aAssertionsMachineClause, env)
env.state_space.undo()
return bool
else: # TODO: dont repeat yourself
init_bstates = exec_initialisation(root, env, mch, not solution_file_name_str=="")
for bstate in init_bstates:
env.state_space.add_state(bstate)
if mch.has_invariant_mc:
w_bool = interpret(mch.aInvariantMachineClause, env)
assert w_bool.bvalue
if mch.has_assertions_mc:
interpret(mch.aAssertionsMachineClause, env)
env.state_space.undo()
if not init_bstates==[]:
env.state_space.add_state(init_bstates[0])
return eval_Invariant(root, env, mch)
def __calc_states_and_print_ui(root, env, mch, solution_file_read):
# Schneider Book page 62-64:
# The parameters p make the constraints C True
# #p.C
# Sets St and constants k which meet the constraints c make the properties B True
# C => #St,k.B
if not env.set_up_done:
next_states = set_up_constants(root, env, mch, solution_file_read)
if len(next_states)>0:
print_set_up_bstates(next_states, mch)
return next_states
else:
# no bstates and no exception: set up to do (e.g no constants)
env.set_up_done = True
# If C and B is True there should be Variables v which make the Invaraiant I True
# B & C => #v.I
if not env.init_done:
next_states = exec_initialisation(root, env, mch, solution_file_read)
if len(next_states)>0:
undo_possible = not env.state_space.empty()
print_init_bstates(next_states, mch, undo_possible)
return next_states
else:
# no bstates and no exception: no init to do (e.g no variables)
env.init_done = True
print mch.mch_name," - Invariant:", eval_Invariant(root, env, mch) # TODO: move print to animation_clui
if EVAL_CHILD_INVARIANT:
bstate = env.state_space.get_state()
for bmachine in bstate.bmch_list:
if not bmachine is None and not bmachine.mch_name==mch.mch_name :
print bmachine.mch_name, " - Invariant:", interpret(bmachine.aInvariantMachineClause, env)
bstate_lst = calc_next_states(env, mch)
show_ui(env, mch, bstate_lst)
next_states = []
for n in bstate_lst: # all other data inside bstate_lst has already been processed by show_ui
next_states.append(n.bstate)
return next_states