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 7608 of file z3py.py.

Constructor & Destructor Documentation

◆ __init__()

def __init__ (   self,
  result,
  ctx 
)

Definition at line 7611 of file z3py.py.

7611  def __init__(self, result, ctx):
7612  self.result = result
7613  self.ctx = ctx
7614  Z3_apply_result_inc_ref(self.ctx.ref(), self.result)
7615 

◆ __del__()

def __del__ (   self)

Definition at line 7619 of file z3py.py.

7619  def __del__(self):
7620  if self.ctx.ref() is not None:
7621  Z3_apply_result_dec_ref(self.ctx.ref(), self.result)
7622 

Member Function Documentation

◆ __deepcopy__()

def __deepcopy__ (   self,
  memo = {} 
)

Definition at line 7616 of file z3py.py.

7616  def __deepcopy__(self, memo={}):
7617  return ApplyResult(self.result, self.ctx)
7618 

◆ __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 7642 of file z3py.py.

7642  def __getitem__(self, idx):
7643  """Return one of the subgoals stored in ApplyResult object `self`.
7644 
7645  >>> a, b = Ints('a b')
7646  >>> g = Goal()
7647  >>> g.add(Or(a == 0, a == 1), Or(b == 0, b == 1), a > b)
7648  >>> t = Tactic('split-clause')
7649  >>> r = t(g)
7650  >>> r[0]
7651  [a == 0, Or(b == 0, b == 1), a > b]
7652  >>> r[1]
7653  [a == 1, Or(b == 0, b == 1), a > b]
7654  """
7655  if idx >= len(self):
7656  raise IndexError
7657  return Goal(goal=Z3_apply_result_get_subgoal(self.ctx.ref(), self.result, idx), ctx=self.ctx)
7658 

◆ __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 7623 of file z3py.py.

7623  def __len__(self):
7624  """Return the number of subgoals in `self`.
7625 
7626  >>> a, b = Ints('a b')
7627  >>> g = Goal()
7628  >>> g.add(Or(a == 0, a == 1), Or(b == 0, b == 1), a > b)
7629  >>> t = Tactic('split-clause')
7630  >>> r = t(g)
7631  >>> len(r)
7632  2
7633  >>> t = Then(Tactic('split-clause'), Tactic('split-clause'))
7634  >>> len(t(g))
7635  4
7636  >>> t = Then(Tactic('split-clause'), Tactic('split-clause'), Tactic('propagate-values'))
7637  >>> len(t(g))
7638  1
7639  """
7640  return int(Z3_apply_result_get_num_subgoals(self.ctx.ref(), self.result))
7641 

◆ __repr__()

def __repr__ (   self)

Definition at line 7659 of file z3py.py.

7659  def __repr__(self):
7660  return obj_to_string(self)
7661 

◆ 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 7667 of file z3py.py.

7667  def as_expr(self):
7668  """Return a Z3 expression consisting of all subgoals.
7669 
7670  >>> x = Int('x')
7671  >>> g = Goal()
7672  >>> g.add(x > 1)
7673  >>> g.add(Or(x == 2, x == 3))
7674  >>> r = Tactic('simplify')(g)
7675  >>> r
7676  [[Not(x <= 1), Or(x == 2, x == 3)]]
7677  >>> r.as_expr()
7678  And(Not(x <= 1), Or(x == 2, x == 3))
7679  >>> r = Tactic('split-clause')(g)
7680  >>> r
7681  [[x > 1, x == 2], [x > 1, x == 3]]
7682  >>> r.as_expr()
7683  Or(And(x > 1, x == 2), And(x > 1, x == 3))
7684  """
7685  sz = len(self)
7686  if sz == 0:
7687  return BoolVal(False, self.ctx)
7688  elif sz == 1:
7689  return self[0].as_expr()
7690  else:
7691  return Or([ self[i].as_expr() for i in range(len(self)) ])
7692 

◆ sexpr()

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

Definition at line 7662 of file z3py.py.

7662  def sexpr(self):
7663  """Return a textual representation of the s-expression representing the set of subgoals in `self`."""
7664  return Z3_apply_result_to_string(self.ctx.ref(), self.result)
7665 
7666 

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.
z3py.UserPropagateBase.__init__
def __init__(self, s, ctx=None)
Definition: z3py.py:10597
z3::range
expr range(expr const &lo, expr const &hi)
Definition: z3++.h:3518
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
z3py.UserPropagateBase.__del__
def __del__(self)
Definition: z3py.py:10622
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.