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 7455 of file z3py.py.

Constructor & Destructor Documentation

◆ __init__()

def __init__ (   self,
  result,
  ctx 
)

Definition at line 7458 of file z3py.py.

7458  def __init__(self, result, ctx):
7459  self.result = result
7460  self.ctx = ctx
7461  Z3_apply_result_inc_ref(self.ctx.ref(), self.result)
7462 
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 7466 of file z3py.py.

7466  def __del__(self):
7467  if self.ctx.ref() is not None:
7468  Z3_apply_result_dec_ref(self.ctx.ref(), self.result)
7469 
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 7463 of file z3py.py.

7463  def __deepcopy__(self, memo={}):
7464  return ApplyResult(self.result, self.ctx)
7465 

◆ __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 7489 of file z3py.py.

7489  def __getitem__(self, idx):
7490  """Return one of the subgoals stored in ApplyResult object `self`.
7491 
7492  >>> a, b = Ints('a b')
7493  >>> g = Goal()
7494  >>> g.add(Or(a == 0, a == 1), Or(b == 0, b == 1), a > b)
7495  >>> t = Tactic('split-clause')
7496  >>> r = t(g)
7497  >>> r[0]
7498  [a == 0, Or(b == 0, b == 1), a > b]
7499  >>> r[1]
7500  [a == 1, Or(b == 0, b == 1), a > b]
7501  """
7502  if idx >= len(self):
7503  raise IndexError
7504  return Goal(goal=Z3_apply_result_get_subgoal(self.ctx.ref(), self.result, idx), ctx=self.ctx)
7505 
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 7470 of file z3py.py.

7470  def __len__(self):
7471  """Return the number of subgoals in `self`.
7472 
7473  >>> a, b = Ints('a b')
7474  >>> g = Goal()
7475  >>> g.add(Or(a == 0, a == 1), Or(b == 0, b == 1), a > b)
7476  >>> t = Tactic('split-clause')
7477  >>> r = t(g)
7478  >>> len(r)
7479  2
7480  >>> t = Then(Tactic('split-clause'), Tactic('split-clause'))
7481  >>> len(t(g))
7482  4
7483  >>> t = Then(Tactic('split-clause'), Tactic('split-clause'), Tactic('propagate-values'))
7484  >>> len(t(g))
7485  1
7486  """
7487  return int(Z3_apply_result_get_num_subgoals(self.ctx.ref(), self.result))
7488 
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 7506 of file z3py.py.

7506  def __repr__(self):
7507  return obj_to_string(self)
7508 

◆ 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 7514 of file z3py.py.

7514  def as_expr(self):
7515  """Return a Z3 expression consisting of all subgoals.
7516 
7517  >>> x = Int('x')
7518  >>> g = Goal()
7519  >>> g.add(x > 1)
7520  >>> g.add(Or(x == 2, x == 3))
7521  >>> r = Tactic('simplify')(g)
7522  >>> r
7523  [[Not(x <= 1), Or(x == 2, x == 3)]]
7524  >>> r.as_expr()
7525  And(Not(x <= 1), Or(x == 2, x == 3))
7526  >>> r = Tactic('split-clause')(g)
7527  >>> r
7528  [[x > 1, x == 2], [x > 1, x == 3]]
7529  >>> r.as_expr()
7530  Or(And(x > 1, x == 2), And(x > 1, x == 3))
7531  """
7532  sz = len(self)
7533  if sz == 0:
7534  return BoolVal(False, self.ctx)
7535  elif sz == 1:
7536  return self[0].as_expr()
7537  else:
7538  return Or([ self[i].as_expr() for i in range(len(self)) ])
7539 
expr range(expr const &lo, expr const &hi)
Definition: z3++.h:3244
def Or(args)
Definition: z3py.py:1694
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 7509 of file z3py.py.

7509  def sexpr(self):
7510  """Return a textual representation of the s-expression representing the set of subgoals in `self`."""
7511  return Z3_apply_result_to_string(self.ctx.ref(), self.result)
7512 
7513 
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