def get_facts(self, rels, definite=True):
clauses = []
if not definite:
clauses += [[~lit for lit in n.fmla] for n in self.all_nodes
if n.status == "false"]
clauses += [
rela_fact(1, equals, n, n) for n in self.all_nodes
if (n.status != "false" and not n.summary and not any(
is_equality_lit(lit) for lit in n.fmla))
]
for n in self.all_nodes:
if n.status == 'true':
wit = get_witness(n)
if wit != None:
fmla = substitute_clause(n.fmla, {'X': (wit)})
clauses += [[lit] for lit in fmla
if not is_taut_equality_lit(lit)]
names = set(
n.name for n in self.all_nodes
if (n.status == "true" if definite else n.status != "false"))
for (r, tvals) in rels:
if tvals:
clauses += r.get_definite_facts(
names, tvals) if definite else r.get_facts(names, tvals)
return clauses
def witness(self,node):
g = self
for lit in node.fmla:
# print lit
if is_equality_lit(lit) and isinstance(lit.atom.args[0],Variable):
self.add_witness_constraint(node,lit.atom.args[1])
return lit.atom.args[1]
uc = used_symbols_clauses(g.state)
fmlas = [n.fmla for n in g.all_nodes]
for f in fmlas:
uc.update(used_symbols_clause(f))
nc = unused_constant(uc,node.sort)
# print "type(nc) = {}".format(type(nc))
self.add_witness_constraint(node,nc)
self.split(node,eq_lit(Variable('X',node.sort),nc))
return nc
def witness(self, node):
g = self
for lit in node.fmla:
# print lit
if is_equality_lit(lit) and isinstance(lit.atom.args[0], Variable):
self.add_witness_constraint(node, lit.atom.args[1])
return lit.atom.args[1]
uc = used_symbols_clauses(g.state)
fmlas = [n.fmla for n in g.all_nodes]
for f in fmlas:
uc.update(used_symbols_clause(f))
nc = unused_constant(uc, node.sort)
# print "type(nc) = {}".format(type(nc))
self.add_witness_constraint(node, nc)
self.split(node, eq_lit(Variable('X', node.sort), nc))
return nc
def get_facts(self,rels,definite=True):
clauses = []
if not definite:
clauses += [[~lit for lit in n.fmla] for n in self.all_nodes if n.status == "false"]
clauses += [rela_fact(1,equals,n,n)
for n in self.all_nodes
if (n.status != "false" and not n.summary and not any(is_equality_lit(lit) for lit in n.fmla))]
for n in self.all_nodes:
if n.status == 'true':
wit = get_witness(n)
if wit != None:
fmla = substitute_clause(n.fmla,{'X':(wit)})
clauses += [[lit] for lit in fmla if not is_taut_equality_lit(lit)]
names = set(n.name for n in self.all_nodes if (n.status == "true" if definite else n.status != "false"))
for (r,tvals) in rels:
if tvals:
clauses += r.get_definite_facts(names,tvals) if definite else r.get_facts(names,tvals)
return clauses
def get_witness(n):
for lit in n.fmla:
# print "get_witness: lit = {}, iseq = {}, type(lit) = {}, type(lit.atom) = {}, lit.atom.rep = {}, lit.atom.rep == equals = {}".format(lit,is_equality_lit(lit),type(lit), type(lit.atom), lit.atom.rep, lit.atom.rep == equals)
if is_equality_lit(lit) and isinstance(lit.atom.args[0],Variable):
return lit.atom.args[1]
return None
def get_witness(n):
for lit in n.fmla:
# print "get_witness: lit = {}, iseq = {}, type(lit) = {}, type(lit.atom) = {}, lit.atom.rep = {}, lit.atom.rep == equals = {}".format(lit,is_equality_lit(lit),type(lit), type(lit.atom), lit.atom.rep, lit.atom.rep == equals)
if is_equality_lit(lit) and isinstance(lit.atom.args[0], Variable):
return lit.atom.args[1]
return None
