Z3
Public Member Functions | Data Fields
ApplyResult Class Reference
+ Inheritance diagram for ApplyResult:

Public Member Functions

def __init__ (self, result, ctx)
 
def __deepcopy__ (self, memo={})
 
def __del__ (self)
 
def __len__ (self)
 
def __getitem__ (self, idx)
 
def __repr__ (self)
 
def sexpr (self)
 
def as_expr (self)
 
- Public Member Functions inherited from Z3PPObject
def use_pp (self)
 

Data Fields

 result
 
 ctx
 

Detailed Description

An ApplyResult object contains the subgoals produced by a tactic when applied to a goal. It also contains model and proof converters.

Definition at line 7449 of file z3py.py.

Constructor & Destructor Documentation

◆ __init__()

def __init__ (   self,
  result,
  ctx 
)

Definition at line 7452 of file z3py.py.

7452  def __init__(self, result, ctx):
7453  self.result = result
7454  self.ctx = ctx
7455  Z3_apply_result_inc_ref(self.ctx.ref(), self.result)
7456 
void Z3_API Z3_apply_result_inc_ref(Z3_context c, Z3_apply_result r)
Increment the reference counter of the given Z3_apply_result object.

◆ __del__()

def __del__ (   self)

Definition at line 7460 of file z3py.py.

7460  def __del__(self):
7461  if self.ctx.ref() is not None:
7462  Z3_apply_result_dec_ref(self.ctx.ref(), self.result)
7463 
void Z3_API Z3_apply_result_dec_ref(Z3_context c, Z3_apply_result r)
Decrement the reference counter of the given Z3_apply_result object.

Member Function Documentation

◆ __deepcopy__()

def __deepcopy__ (   self,
  memo = {} 
)

Definition at line 7457 of file z3py.py.

7457  def __deepcopy__(self, memo={}):
7458  return ApplyResult(self.result, self.ctx)
7459 

◆ __getitem__()

def __getitem__ (   self,
  idx 
)
Return one of the subgoals stored in ApplyResult object `self`.

>>> a, b = Ints('a b')
>>> g = Goal()
>>> g.add(Or(a == 0, a == 1), Or(b == 0, b == 1), a > b)
>>> t = Tactic('split-clause')
>>> r = t(g)
>>> r[0]
[a == 0, Or(b == 0, b == 1), a > b]
>>> r[1]
[a == 1, Or(b == 0, b == 1), a > b]

Definition at line 7483 of file z3py.py.

7483  def __getitem__(self, idx):
7484  """Return one of the subgoals stored in ApplyResult object `self`.
7485 
7486  >>> a, b = Ints('a b')
7487  >>> g = Goal()
7488  >>> g.add(Or(a == 0, a == 1), Or(b == 0, b == 1), a > b)
7489  >>> t = Tactic('split-clause')
7490  >>> r = t(g)
7491  >>> r[0]
7492  [a == 0, Or(b == 0, b == 1), a > b]
7493  >>> r[1]
7494  [a == 1, Or(b == 0, b == 1), a > b]
7495  """
7496  if idx >= len(self):
7497  raise IndexError
7498  return Goal(goal=Z3_apply_result_get_subgoal(self.ctx.ref(), self.result, idx), ctx=self.ctx)
7499 
Z3_goal Z3_API Z3_apply_result_get_subgoal(Z3_context c, Z3_apply_result r, unsigned i)
Return one of the subgoals in the Z3_apply_result object returned by Z3_tactic_apply.

◆ __len__()

def __len__ (   self)
Return the number of subgoals in `self`.

>>> a, b = Ints('a b')
>>> g = Goal()
>>> g.add(Or(a == 0, a == 1), Or(b == 0, b == 1), a > b)
>>> t = Tactic('split-clause')
>>> r = t(g)
>>> len(r)
2
>>> t = Then(Tactic('split-clause'), Tactic('split-clause'))
>>> len(t(g))
4
>>> t = Then(Tactic('split-clause'), Tactic('split-clause'), Tactic('propagate-values'))
>>> len(t(g))
1

Definition at line 7464 of file z3py.py.

7464  def __len__(self):
7465  """Return the number of subgoals in `self`.
7466 
7467  >>> a, b = Ints('a b')
7468  >>> g = Goal()
7469  >>> g.add(Or(a == 0, a == 1), Or(b == 0, b == 1), a > b)
7470  >>> t = Tactic('split-clause')
7471  >>> r = t(g)
7472  >>> len(r)
7473  2
7474  >>> t = Then(Tactic('split-clause'), Tactic('split-clause'))
7475  >>> len(t(g))
7476  4
7477  >>> t = Then(Tactic('split-clause'), Tactic('split-clause'), Tactic('propagate-values'))
7478  >>> len(t(g))
7479  1
7480  """
7481  return int(Z3_apply_result_get_num_subgoals(self.ctx.ref(), self.result))
7482 
unsigned Z3_API Z3_apply_result_get_num_subgoals(Z3_context c, Z3_apply_result r)
Return the number of subgoals in the Z3_apply_result object returned by Z3_tactic_apply.

◆ __repr__()

def __repr__ (   self)

Definition at line 7500 of file z3py.py.

7500  def __repr__(self):
7501  return obj_to_string(self)
7502 

◆ as_expr()

def as_expr (   self)
Return a Z3 expression consisting of all subgoals.

>>> x = Int('x')
>>> g = Goal()
>>> g.add(x > 1)
>>> g.add(Or(x == 2, x == 3))
>>> r = Tactic('simplify')(g)
>>> r
[[Not(x <= 1), Or(x == 2, x == 3)]]
>>> r.as_expr()
And(Not(x <= 1), Or(x == 2, x == 3))
>>> r = Tactic('split-clause')(g)
>>> r
[[x > 1, x == 2], [x > 1, x == 3]]
>>> r.as_expr()
Or(And(x > 1, x == 2), And(x > 1, x == 3))

Definition at line 7508 of file z3py.py.

7508  def as_expr(self):
7509  """Return a Z3 expression consisting of all subgoals.
7510 
7511  >>> x = Int('x')
7512  >>> g = Goal()
7513  >>> g.add(x > 1)
7514  >>> g.add(Or(x == 2, x == 3))
7515  >>> r = Tactic('simplify')(g)
7516  >>> r
7517  [[Not(x <= 1), Or(x == 2, x == 3)]]
7518  >>> r.as_expr()
7519  And(Not(x <= 1), Or(x == 2, x == 3))
7520  >>> r = Tactic('split-clause')(g)
7521  >>> r
7522  [[x > 1, x == 2], [x > 1, x == 3]]
7523  >>> r.as_expr()
7524  Or(And(x > 1, x == 2), And(x > 1, x == 3))
7525  """
7526  sz = len(self)
7527  if sz == 0:
7528  return BoolVal(False, self.ctx)
7529  elif sz == 1:
7530  return self[0].as_expr()
7531  else:
7532  return Or([ self[i].as_expr() for i in range(len(self)) ])
7533 
expr range(expr const &lo, expr const &hi)
Definition: z3++.h:3244
def Or(args)
Definition: z3py.py:1688
def BoolVal(val, ctx=None)
Definition: z3py.py:1529

◆ sexpr()

def sexpr (   self)
Return a textual representation of the s-expression representing the set of subgoals in `self`.

Definition at line 7503 of file z3py.py.

7503  def sexpr(self):
7504  """Return a textual representation of the s-expression representing the set of subgoals in `self`."""
7505  return Z3_apply_result_to_string(self.ctx.ref(), self.result)
7506 
7507 
Z3_string Z3_API Z3_apply_result_to_string(Z3_context c, Z3_apply_result r)
Convert the Z3_apply_result object returned by Z3_tactic_apply into a string.

Field Documentation

◆ ctx

ctx

◆ result

result