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 7574 of file z3py.py.

Constructor & Destructor Documentation

◆ __init__()

def __init__ (   self,
  result,
  ctx 
)

Definition at line 7577 of file z3py.py.

7577  def __init__(self, result, ctx):
7578  self.result = result
7579  self.ctx = ctx
7580  Z3_apply_result_inc_ref(self.ctx.ref(), self.result)
7581 

◆ __del__()

def __del__ (   self)

Definition at line 7585 of file z3py.py.

7585  def __del__(self):
7586  if self.ctx.ref() is not None:
7587  Z3_apply_result_dec_ref(self.ctx.ref(), self.result)
7588 

Member Function Documentation

◆ __deepcopy__()

def __deepcopy__ (   self,
  memo = {} 
)

Definition at line 7582 of file z3py.py.

7582  def __deepcopy__(self, memo={}):
7583  return ApplyResult(self.result, self.ctx)
7584 

◆ __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 7608 of file z3py.py.

7608  def __getitem__(self, idx):
7609  """Return one of the subgoals stored in ApplyResult object `self`.
7610 
7611  >>> a, b = Ints('a b')
7612  >>> g = Goal()
7613  >>> g.add(Or(a == 0, a == 1), Or(b == 0, b == 1), a > b)
7614  >>> t = Tactic('split-clause')
7615  >>> r = t(g)
7616  >>> r[0]
7617  [a == 0, Or(b == 0, b == 1), a > b]
7618  >>> r[1]
7619  [a == 1, Or(b == 0, b == 1), a > b]
7620  """
7621  if idx >= len(self):
7622  raise IndexError
7623  return Goal(goal=Z3_apply_result_get_subgoal(self.ctx.ref(), self.result, idx), ctx=self.ctx)
7624 

◆ __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 7589 of file z3py.py.

7589  def __len__(self):
7590  """Return the number of subgoals in `self`.
7591 
7592  >>> a, b = Ints('a b')
7593  >>> g = Goal()
7594  >>> g.add(Or(a == 0, a == 1), Or(b == 0, b == 1), a > b)
7595  >>> t = Tactic('split-clause')
7596  >>> r = t(g)
7597  >>> len(r)
7598  2
7599  >>> t = Then(Tactic('split-clause'), Tactic('split-clause'))
7600  >>> len(t(g))
7601  4
7602  >>> t = Then(Tactic('split-clause'), Tactic('split-clause'), Tactic('propagate-values'))
7603  >>> len(t(g))
7604  1
7605  """
7606  return int(Z3_apply_result_get_num_subgoals(self.ctx.ref(), self.result))
7607 

◆ __repr__()

def __repr__ (   self)

Definition at line 7625 of file z3py.py.

7625  def __repr__(self):
7626  return obj_to_string(self)
7627 

◆ 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 7633 of file z3py.py.

7633  def as_expr(self):
7634  """Return a Z3 expression consisting of all subgoals.
7635 
7636  >>> x = Int('x')
7637  >>> g = Goal()
7638  >>> g.add(x > 1)
7639  >>> g.add(Or(x == 2, x == 3))
7640  >>> r = Tactic('simplify')(g)
7641  >>> r
7642  [[Not(x <= 1), Or(x == 2, x == 3)]]
7643  >>> r.as_expr()
7644  And(Not(x <= 1), Or(x == 2, x == 3))
7645  >>> r = Tactic('split-clause')(g)
7646  >>> r
7647  [[x > 1, x == 2], [x > 1, x == 3]]
7648  >>> r.as_expr()
7649  Or(And(x > 1, x == 2), And(x > 1, x == 3))
7650  """
7651  sz = len(self)
7652  if sz == 0:
7653  return BoolVal(False, self.ctx)
7654  elif sz == 1:
7655  return self[0].as_expr()
7656  else:
7657  return Or([ self[i].as_expr() for i in range(len(self)) ])
7658 

◆ sexpr()

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

Definition at line 7628 of file z3py.py.

7628  def sexpr(self):
7629  """Return a textual representation of the s-expression representing the set of subgoals in `self`."""
7630  return Z3_apply_result_to_string(self.ctx.ref(), self.result)
7631 
7632 

Field Documentation

◆ ctx

ctx

◆ result

result
Z3_apply_result_to_string
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.
z3::range
expr range(expr const &lo, expr const &hi)
Definition: z3++.h:3488
Z3_apply_result_get_num_subgoals
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.
z3py.Or
def Or(*args)
Definition: z3py.py:1732
Z3_apply_result_get_subgoal
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.
Z3_apply_result_dec_ref
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.
z3py.BoolVal
def BoolVal(val, ctx=None)
Definition: z3py.py:1570
Z3_apply_result_inc_ref
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.