def formula_to_z3_int(fmla):
# print "formula_to_z3_int: {} : {}".format(fmla,type(fmla))
if ivy_logic.is_atom(fmla):
return atom_to_z3(fmla)
if isinstance(fmla, ivy_logic.Definition) and ivy_logic.is_enumerated(
fmla.args[0]):
return encode_equality(*fmla.args)
args = [formula_to_z3_int(arg) for arg in fmla.args]
if isinstance(fmla, ivy_logic.And):
return z3.And(args)
if isinstance(fmla, ivy_logic.Or):
return z3.Or(args)
if isinstance(fmla, ivy_logic.Not):
return z3.Not(args[0])
if isinstance(fmla, ivy_logic.Definition):
return my_eq(args[0], args[1])
if isinstance(fmla, ivy_logic.Iff):
return my_eq(args[0], args[1])
if isinstance(fmla, ivy_logic.Implies):
return z3.Implies(args[0], args[1])
if isinstance(fmla, ivy_logic.Ite):
return z3.If(args[0], args[1], args[2])
if ivy_logic.is_quantifier(fmla):
variables = ivy_logic.quantifier_vars(fmla)
q = z3.forall if ivy_logic.is_forall(fmla) else z3.Exists
res = q([term_to_z3(v) for v in variables], args[0])
# print "res = {}".format(res)
return res
if ivy_logic.is_individual(fmla):
return term_to_z3(fmla)
print "bad fmla: {!r}".format(fmla)
assert False
def formula_to_z3_int(fmla):
# print "formula_to_z3_int: {} : {}".format(fmla,type(fmla))
if ivy_logic.is_atom(fmla):
return atom_to_z3(fmla)
if isinstance(fmla, ivy_logic.Definition) and ivy_logic.is_enumerated(fmla.args[0]) and not use_z3_enums:
return encode_equality(*fmla.args)
args = [formula_to_z3_int(arg) for arg in fmla.args]
if isinstance(fmla, ivy_logic.And):
return z3.And(args)
if isinstance(fmla, ivy_logic.Or):
return z3.Or(args)
if isinstance(fmla, ivy_logic.Not):
return z3.Not(args[0])
if isinstance(fmla, ivy_logic.Definition):
return my_eq(args[0], args[1])
if isinstance(fmla, ivy_logic.Iff):
return my_eq(args[0], args[1])
if isinstance(fmla, ivy_logic.Implies):
return z3.Implies(args[0], args[1])
if isinstance(fmla, ivy_logic.Ite):
return z3.If(args[0], args[1], args[2])
if ivy_logic.is_quantifier(fmla):
variables = ivy_logic.quantifier_vars(fmla)
q = z3.ForAll if ivy_logic.is_forall(fmla) else z3.Exists
res = q([term_to_z3(v) for v in variables], args[0])
# print "res = {}".format(res)
return res
if ivy_logic.is_individual(fmla):
return term_to_z3(fmla)
print "bad fmla: {!r}".format(fmla)
assert False