def sync_trans(aut1, aut2, syc_events):
sync_events = helper.extract_elems_from_trans(aut1.trans, 'event').union(
helper.extract_elems_from_trans(aut2.trans, 'event'))
sync_trans = set()
for event in sync_events:
if event not in aut1.events:
for x in aut1.states:
aut1.trans = aut1.trans | {auto.Transition(x, event, x)}
if event not in aut2.events:
for x in aut2.states:
aut2.trans = aut2.trans | {auto.Transition(x, event, x)}
for transition1 in auto.filter_trans_by_events(aut1.trans, {event}):
for transition2 in auto.filter_trans_by_events(
aut2.trans, {event}):
source = merge_label(
helper.extract_elems_from_trans({transition1},
'source').pop(),
helper.extract_elems_from_trans({tr2}, 'source').pop())
target = merge_label(
helper.extract_elems_from_trans({transition1},
'target').pop(),
helper.extract_elems_from_trans({tr2}, 'target').pop())
sync_trans.add(auto.Transition(source, event, target))
return sync_trans
# -*- coding: utf-8 -*-
"""
Created on Thu Sep 20 11:05:39 2018
@author: Fredrik Möller
"""
import Automaton as auto
b1 = auto.Automaton(states={'a', 'b'},
init='a',
events={1},
trans={auto.Transition('a', 1, 'b')},
marked={'b'})
b2 = auto.Automaton(states={'c', 'd', 'e'},
init='c',
events={1, 2},
forbidden={},
trans={
auto.Transition('c', 1, 'd'),
auto.Transition('d', 2, 'e'),
auto.Transition('e', 1, 'c')
})
aut1 = b1
aut2 = b2
def flip_trans(trans):
""" Flips the direction of the transitions in the set"""
return {auto.Transition(t.target, t.event, t.source) for t in trans}
def synch(aut1, aut2):
"""
Returns the synchronous composition of two automata.
:param aut1: Automaton
:param aut2: Automaton
"""
import helper as help
import automaton as auto
sync_events = help.extract_elems_from_trans(aut1.trans, 'event').union(
help.extract_elems_from_trans(aut2.trans, 'event'))
sync_trans = set()
for event in sync_events:
if event not in aut1.events:
for y in aut1.states:
aut1.trans = aut1.trans.union({auto.Transition(y, event, y)
}) #for y in aut1.states
if event not in aut2.events:
for y in aut2.states:
aut2.trans = aut2.trans.union({auto.Transition(y, event, y)
}) #for y in aut1.states
for event in sync_events:
for transition1 in help.filter_trans_by_events(aut1.trans, {event}):
for transition2 in help.filter_trans_by_events(
aut2.trans, {event}):
source = help.merge_label(
help.extract_elems_from_trans({transition1},
'source').pop(),
help.extract_elems_from_trans({transition2},
'source').pop())
target = help.merge_label(
help.extract_elems_from_trans({transition1},
'target').pop(),
help.extract_elems_from_trans({transition2},
'target').pop())
sync_trans.add(auto.Transition(source, event, target))
# initial states, as a "label" not set
sync_init = help.merge_label(aut1.init, aut2.init)
# states to be synchronized
#sync_states=helper.cross_product(aut1.states,aut2.states)
sync_states = help.cross_product(aut1.states, aut2.states)
#sync_states=help.extract_elems_from_trans(sync_trans,'source').union(help.extract_elems_from_trans(sync_trans,'target'),{sync_init})
# marked states, if no marked states in set --> all states are marked
if len(aut1.marked) == 0:
aut1.marked = aut1.states.copy()
if len(aut2.marked) == 0:
aut2.marked = aut2.states.copy()
sync_marked = help.cross_product(aut1.marked, aut2.marked)
sync_marked = sync_marked.intersection(sync_states)
# forbidden states, forbidden states according to lecture notes
sync_forbidden = help.cross_product(aut1.forbidden, aut2.states).union(
help.cross_product(aut1.states, aut2.forbidden)) & sync_states
reach_sync_states = reach(sync_events, sync_trans, {sync_init},
sync_forbidden)
reach_sync_marked = sync_marked.intersection(reach_sync_states)
reach_sync_states.update({sync_init})
reach_trans = set()
for element in sync_trans:
if element.source.issubset(
reach_sync_states) and element.target.issubset(
reach_sync_states):
reach_trans.update({element})
return auto.Automaton(states=reach_sync_states,
init=sync_init,
events=sync_events,
trans=reach_trans,
forbidden=sync_forbidden,
marked=reach_sync_marked)
"""
# -*- coding: utf-8 -*-
"""
Created on Thu Sep 13 15:20:37 2018
@author: Fredrik Möller
"""
#imports
import Automaton as auto
states = {'p11', 'p12'}
init = 'p11'
events = {'a', 'b'}
trans = {
auto.Transition('p11', 'a', 'p12'),
auto.Transition('p12', 'b', 'p11')
}
marked = {'p11', 'p12'}
start_states = states
p1 = auto.Automaton(states, init, events, trans, marked)
#coreachable_states = co_reach.coreach(events, trans,start_states, forbidden)
#print(coreachable_states)
# -*- coding: utf-8 -*-
"""
Created on Wed Sep 26 15:10:37 2018
@author: Fredrik Möller
"""
import synch1_1 as synch
import Automaton as auto
p1 = auto.Automaton(states={'p11', 'p12'},
init='p11',
events={'a', 'b'},
trans={
auto.Transition('p11', 'a', 'p12'),
auto.Transition('p12', 'b', 'p11')
},
marked={})
p2 = auto.Automaton(states={'p21', 'p22'},
init='p21',
events={'e', 'd', 'c'},
trans={
auto.Transition('p22', 'd', 'p21'),
auto.Transition('p22', 'e', 'p21'),
auto.Transition('p21', 'c', 'p22')
},
marked={})
sp1 = auto.Automaton(states={'sp11', 'sp12'},
init='sp11',
