def dict_to_texpr(todict, env):
texpr = PyTexpr1.cst(env, PyMPQScalarCoeff(PyMPQScalar(todict['_'])))
for var, val in reversed(list(todict.items())):
if var != '_':
coeff = PyTexpr1.cst(env, PyMPQScalarCoeff(PyMPQScalar(val)))
dim = PyTexpr1.var(env, PyVar(var))
term = PyTexpr1.binop(TexprOp.AP_TEXPR_MUL, coeff, dim,
TexprRtype.AP_RTYPE_REAL,
TexprRdir.AP_RDIR_RND)
texpr = PyTexpr1.binop(TexprOp.AP_TEXPR_ADD, term, texpr,
TexprRtype.AP_RTYPE_REAL,
TexprRdir.AP_RDIR_RND)
return texpr
def test_bound_texpr(self):
e = PyEnvironment([PyVar('x0'), PyVar('y')], [PyVar('z')])
man: PyManager = PyBoxMPQManager()
variables = [PyVar('x0'), PyVar('y')]
intervals = [PyMPQInterval(-3, 2), PyMPQInterval(-2, 2, 1, 1)]
b = PyBox(man, e, variables=variables, intervals=intervals)
x0 = PyTexpr1.var(e, PyVar('x0'))
x1 = PyTexpr1.var(e, PyVar('y'))
add = PyTexpr1.binop(TexprOp.AP_TEXPR_ADD, x0, x1,
TexprRtype.AP_RTYPE_REAL, TexprRdir.AP_RDIR_RND)
self.assertEqual(str(b.bound_texpr(add)), '[-5,4]')
def visit_Call(self, stmt: 'Call', environment=None, usub=False):
assert not usub
if stmt.name == 'usub':
return self.visit(stmt.arguments[0],
environment=environment,
usub=True)
elif stmt.name == 'add':
left = self.visit(stmt.arguments[0],
environment=environment,
usub=usub)
right = self.visit(stmt.arguments[1],
environment=environment,
usub=usub)
return PyTexpr1.binop(TexprOp.AP_TEXPR_ADD, left, right,
TexprRtype.AP_RTYPE_REAL,
TexprRdir.AP_RDIR_RND)
elif stmt.name == 'sub':
left = self.visit(stmt.arguments[0],
environment=environment,
usub=usub)
right = self.visit(stmt.arguments[1],
environment=environment,
usub=usub)
return PyTexpr1.binop(TexprOp.AP_TEXPR_SUB, left, right,
TexprRtype.AP_RTYPE_REAL,
TexprRdir.AP_RDIR_RND)
elif stmt.name == 'mult':
left = self.visit(stmt.arguments[0],
environment=environment,
usub=usub)
right = self.visit(stmt.arguments[1],
environment=environment,
usub=usub)
return PyTexpr1.binop(TexprOp.AP_TEXPR_MUL, left, right,
TexprRtype.AP_RTYPE_REAL,
TexprRdir.AP_RDIR_RND)
elif stmt.name == 'ReLU':
return PyVar(
stmt.arguments[0].variable.name
) # self.visit(stmt.arguments[0], environment=environment, usub=usub)
raise ValueError(f"Conversion of {stmt} to APRON is unsupported!")
def visit_BinaryArithmeticOperation(self, expr, environment=None, usub=False) -> PyTexpr1:
assert not usub
expr1 = self.visit(expr.left, environment)
expr2 = self.visit(expr.right, environment)
op2op = {
BinaryArithmeticOperation.Operator.Add: TexprOp.AP_TEXPR_ADD,
BinaryArithmeticOperation.Operator.Sub: TexprOp.AP_TEXPR_SUB,
BinaryArithmeticOperation.Operator.Mult: TexprOp.AP_TEXPR_MUL,
BinaryArithmeticOperation.Operator.Div: TexprOp.AP_TEXPR_DIV
}
op = op2op[expr.operator]
return PyTexpr1.binop(op, expr1, expr2, TexprRtype.AP_RTYPE_REAL, TexprRdir.AP_RDIR_RND)
def affine(self, left: List[PyVar],
right: List[PyTexpr1]) -> 'Symbolic1State':
array = list()
assignments = dict()
for lhs, expr in zip(left, right):
rhs = expr
for sym, val in self.symbols.values():
rhs = rhs.substitute(sym, val)
assignments[str(lhs)] = (lhs, rhs)
var = PyTexpr1.var(self.environment, lhs)
binop = PyTexpr1.binop(TexprOp.AP_TEXPR_SUB, var, rhs, rtype, rdir)
cond = PyTcons1.make(binop, ConsTyp.AP_CONS_EQ)
array.append(cond)
self.symbols = assignments
self.state = self.state.meet(PyTcons1Array(array))
return self
