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implementation for encoding or rsLTL (without loop)

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Artur Meski
2017-03-05 17:41:26 +01:00
parent 827568e174
commit f70cc0034b
4 changed files with 96 additions and 35 deletions
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120
logics/rsltl.py
View File

@@ -1,7 +1,7 @@
from z3 import *
from enum import Enum
rsLTL_form_type = Enum('rsLTL_form_type', 'bag l_and l_or l_not globally next until release')
rsLTL_form_type = Enum('rsLTL_form_type', 'bag l_and l_or l_not t_globally t_finally t_next t_until t_release')
BagDesc_oper = Enum('BagDesc_oper', 'entity true l_and l_or l_not lt le eq ge gt')
class BagDescription(object):
@@ -80,23 +80,30 @@ class Formula_rsLTL(object):
self.right_operand = R_oper
self.sub_operand = sub_oper
self.bag_descr = bag
if isinstance(self.left_operand, BagDescription):
self.left_operand = Formula_rsLTL.f_bag(self.left_operand)
if isinstance(self.right_operand, BagDescription):
self.right_operand = Formula_rsLTL.f_bag(self.right_operand)
def __repr__(self):
if self.f_type == rsLTL_form_type.bag:
return repr(self.bag_descr)
if self.f_type == rsLTL_form_type.l_not:
return "~( " + repr(self.left_operand) + " )"
if self.f_type == rsLTL_form_type.globally:
if self.f_type == rsLTL_form_type.t_globally:
return "G[" + repr(self.sub_operand) + "]( " + repr(self.left_operand) + " )"
if self.f_type == rsLTL_form_type.next:
if self.f_type == rsLTL_form_type.t_finally:
return "F[" + repr(self.sub_operand) + "]( " + repr(self.left_operand) + " )"
if self.f_type == rsLTL_form_type.t_next:
return "X[" + repr(self.sub_operand) + "]( " + repr(self.left_operand) + " )"
if self.f_type == rsLTL_form_type.l_and:
return "( " + repr(self.left_operand) + " & " + repr(self.right_operand) + " )"
if self.f_type == rsLTL_form_type.l_or:
return "( " + repr(self.left_operand) + " | " + repr(self.right_operand) + " )"
if self.f_type == rsLTL_form_type.until:
if self.f_type == rsLTL_form_type.t_until:
return "( " + repr(self.left_operand) + " U[" + repr(self.sub_operand) + "]" + repr(self.right_operand) + " )"
if self.f_type == rsLTL_form_type.release:
if self.f_type == rsLTL_form_type.t_release:
return "( " + repr(self.left_operand) + " R[" + repr(self.sub_operand) + "]" + repr(self.right_operand) + " )"
@property
@@ -113,15 +120,19 @@ class Formula_rsLTL(object):
@classmethod
def f_G(cls, sub, arg):
return cls(rsLTL_form_type.globally, L_oper = arg, sub_oper = sub)
return cls(rsLTL_form_type.t_globally, L_oper = arg, sub_oper = sub)
@classmethod
def f_U(cls, sub, arg_L, arg_R):
return cls(rsLTL_form_type.until, L_oper = arg_L, R_oper = arg_R, sub_oper = sub)
return cls(rsLTL_form_type.t_until, L_oper = arg_L, R_oper = arg_R, sub_oper = sub)
@classmethod
def f_F(cls, sub, arg_L, arg_R):
return cls(rsLTL_form_type.t_finally, L_oper = arg_L, R_oper = arg_R, sub_oper = sub)
@classmethod
def f_R(cls, sub, arg_L, arg_R):
return cls(rsLTL_form_type.release, L_oper = arg_L, R_oper = arg_R, sub_oper = sub)
return cls(rsLTL_form_type.t_release, L_oper = arg_L, R_oper = arg_R, sub_oper = sub)
def __and__(self, other):
return Formula_rsLTL(rsLTL_form_type.l_and, L_oper = self, R_oper = other)
@@ -143,6 +154,7 @@ class Encoder_rsLTL(object):
self.rs = smt_checker.rs
def encode_bag(self, bag_formula, level, context=False):
if bag_formula.f_type == BagDesc_oper.entity:
entity_id = self.rs.get_entity_id(bag_formula.entity)
if context:
@@ -154,10 +166,12 @@ class Encoder_rsLTL(object):
return True
if bag_formula.f_type == BagDesc_oper.l_and:
return And(self.encode_bag(bag_formula.left_operand, level, context), self.encode_bag(bag_formula.left_.right_operand, level, context))
return And(self.encode_bag(bag_formula.left_operand, level, context),
self.encode_bag(bag_formula.left_.right_operand, level, context))
if bag_formula.f_type == BagDesc_oper.l_or:
return Or(self.encode_bag(bag_formula.left_operand, level, context), self.encode_bag(bag_formula.right_operand, level, context))
return Or(self.encode_bag(bag_formula.left_operand, level, context),
self.encode_bag(bag_formula.right_operand, level, context))
if bag_formula.f_type == BagDesc_oper.l_not:
return Not(self.encode_bag(bag_formula.left_operand, level, context))
@@ -185,41 +199,85 @@ class Encoder_rsLTL(object):
def encode(self, formula, level, bound):
if not isinstance(formula, Formula_rsLTL):
raise NotImplementedError("Unsupported formula type: " + str(type(formula)))
if level > bound:
return False
if formula.f_type == rsLTL_form_type.bag:
return self.encode_bag_state(formula.bag_descr, level)
if formula.f_type == rsLTL_form_type.l_not:
elif formula.f_type == rsLTL_form_type.l_not:
subform = formula.left_operand
if subform.is_bag:
return Not(self.encode_bag_state(subform, level))
else:
raise RuntimeError("Negation can be applied only to bags")
raise RuntimeError("Negation can be applied to bags only")
if formula.f_type == rsLTL_form_type.l_and:
return And(self.encode(formula.left_operand, level, bound), self.encode(formula.right_operand, level, bound))
elif formula.f_type == rsLTL_form_type.l_and:
return And(
self.encode(formula.left_operand, level, bound),
self.encode(formula.right_operand, level, bound)
)
if formula.f_type == rsLTL_form_type.l_or:
return Or(self.encode(formula.left_operand, level, bound), self.encode(formula.right_operand, level, bound))
elif formula.f_type == rsLTL_form_type.l_or:
return Or(
self.encode(formula.left_operand, level, bound),
self.encode(formula.right_operand, level, bound)
)
if formula.f_type == rsLTL_form_type.next:
enc = And(self.encode(formula.left_operand, level+1, bound), self.encode_bag_ctx(formula.sub_operand, level))
elif formula.f_type == rsLTL_form_type.t_next:
enc = And(
self.encode(formula.left_operand, level+1, bound),
self.encode_bag_ctx(formula.sub_operand, level)
)
return enc
if formula.f_type == rsLTL_form_type.globally:
enc = And(self.encode(formula.left_operand, level, bound),
self.encode(formula, level+1, bound),
self.encode_bag_ctx(formula.sub_operand, level))
elif formula.f_type == rsLTL_form_type.t_globally:
enc = And(
self.encode(formula.left_operand, level, bound),
self.encode_bag_ctx(formula.sub_operand, level),
self.encode(formula, level+1, bound)
)
return enc
elif formula.f_type == rsLTL_form_type.t_finally:
enc = Or(
self.encode(formula.left_operand, level, bound),
And(
self.encode(formula, level+1, bound),
self.encode_bag_ctx(formula.sub_operand, level)
)
)
return enc
elif formula.f_type == rsLTL_form_type.t_until:
enc = Or(
self.encode(formula.right_operand, level, bound),
And(
self.encode(formula.left_operand, level, bound),
self.encode(formula, level+1, bound),
self.encode_bag_ctx(formula.sub_operand, level)
)
)
return enc
elif formula.f_type == rsLTL_form_type.t_release:
enc = And(
self.encode(formula.right_operand, level, bound),
Or(
self.encode(formula.left_operand, level, bound),
And(
self.encode(formula, level+1, bound),
self.encode_bag_ctx(formula.sub_operand, level)
)
)
)
return enc
# if formula.f_type == rsLTL_form_type.until:
# return "( " + repr(formula.right_operand) + " U[" + repr(self.sub_operand) + "]" + repr(formula.right_operand) + " )"
#
# if formula.left_ == rsLTL_form_type.release:
# return "( " + repr(formula.left_operand) + " R[" + repr(self.sub_operand) + "]" + repr(formula.right_operand) + " )"
#x = ~( Formula_rsLTL.f_X(BagDescription.f_TRUE(), Formula_rsLTL.f_bag( ~((BagDescription.f_entity("ent1") == 3) | (BagDescription.f_entity("ent2") < 3)) ) ) ) & Formula_rsLTL.f_X(BagDescription.f_TRUE(), Formula_rsLTL.f_bag( ~((BagDescription.f_entity("ent3") == 1) ) ) )
#print(x)
else:
raise NotImplementedError("Unsupported operator")
def encode_loop(self, formula, level, bound):
pass

7
rs_testing.py
View File

@@ -25,15 +25,16 @@ def test_rsLTL():
c.add_transition("init", [("a",1),("inc",1)], "working")
c.add_transition("working", [("inc",1)], "working")
x = ( Formula_rsLTL.f_X(BagDescription.f_TRUE(), Formula_rsLTL.f_bag( ~((BagDescription.f_entity("ent1") == 3) | (BagDescription.f_entity("ent2") < 3)) ) ) ) & Formula_rsLTL.f_X(BagDescription.f_TRUE(), Formula_rsLTL.f_bag( ~((BagDescription.f_entity("ent3") == 1) ) ) )
# x = ( Formula_rsLTL.f_X(BagDescription.f_TRUE(), Formula_rsLTL.f_bag( ~((BagDescription.f_entity("ent1") == 3) | (BagDescription.f_entity("ent2") < 3)) ) ) ) & Formula_rsLTL.f_X(BagDescription.f_TRUE(), Formula_rsLTL.f_bag( ~((BagDescription.f_entity("ent3") == 1) ) ) )
x = Formula_rsLTL.f_G((BagDescription.f_entity("inc") > 0), (BagDescription.f_entity("ent1") == 3) | (BagDescription.f_entity("ent2") < 3))
print(x)
rc = ReactionSystemWithAutomaton(r,c)
checker = SmtCheckerRSC(rc)
checker.dummy_unroll(10)
checker.dummy_unroll(1000)
e = Encoder_rsLTL(checker)
print(e.encode(x, 1, 10))
print(e.encode(x, 0, 10))
def test_extended_automaton():

2
rssmt.py
View File

@@ -20,7 +20,7 @@ profiling = False
##################################################################
version = "2016/12/28/00"
version = "2017/03/05/00"
rsmc_banner = """
Reaction Systems SMT-Based Model Checking

2
smt/smt_checker_rsc.py
View File

@@ -369,9 +369,11 @@ class SmtCheckerRSC(object):
"""Bounded Model Checking for rsLTL properties"""
def dummy_unroll(self, levels):
"""Unrolls the variables for testing purposes"""
for i in range(levels):
self.prepare_all_variables()
print(C_MARK_INFO + " Dummy Unrolling done.")
def check_reachability(self, state, print_witness=True,
print_time=True, print_mem=True, max_level=1000):