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

Public Member Functions

def __init__ (self, f, ctx)
 
def __del__ (self)
 
def else_value (self)
 
def num_entries (self)
 
def arity (self)
 
def entry (self, idx)
 
def translate (self, other_ctx)
 
def __copy__ (self)
 
def __deepcopy__
 
def as_list (self)
 
def __repr__ (self)
 
- Public Member Functions inherited from Z3PPObject
def use_pp (self)
 

Data Fields

 f
 
 ctx
 

Detailed Description

Stores the interpretation of a function in a Z3 model.

Definition at line 6241 of file z3py.py.

Constructor & Destructor Documentation

def __init__ (   self,
  f,
  ctx 
)

Definition at line 6244 of file z3py.py.

6244  def __init__(self, f, ctx):
6245  self.f = f
6246  self.ctx = ctx
6247  if self.f is not None:
6248  Z3_func_interp_inc_ref(self.ctx.ref(), self.f)
6249 
void Z3_API Z3_func_interp_inc_ref(Z3_context c, Z3_func_interp f)
Increment the reference counter of the given Z3_func_interp object.
def __init__(self, f, ctx)
Definition: z3py.py:6244
def __del__ (   self)

Definition at line 6250 of file z3py.py.

6250  def __del__(self):
6251  if self.f is not None and self.ctx.ref() is not None and Z3_func_interp_dec_ref is not None:
6252  Z3_func_interp_dec_ref(self.ctx.ref(), self.f)
6253 
def __del__(self)
Definition: z3py.py:6250
void Z3_API Z3_func_interp_dec_ref(Z3_context c, Z3_func_interp f)
Decrement the reference counter of the given Z3_func_interp object.

Member Function Documentation

def __copy__ (   self)

Definition at line 6332 of file z3py.py.

6332  def __copy__(self):
6333  return self.translate(self.ctx)
6334 
def translate(self, other_ctx)
Definition: z3py.py:6327
def __copy__(self)
Definition: z3py.py:6332
def __deepcopy__ (   self,
  memo = {} 
)

Definition at line 6335 of file z3py.py.

6335  def __deepcopy__(self, memo={}):
6336  return self.translate(self.ctx)
6337 
def __deepcopy__
Definition: z3py.py:6335
def translate(self, other_ctx)
Definition: z3py.py:6327
def __repr__ (   self)

Definition at line 6355 of file z3py.py.

6355  def __repr__(self):
6356  return obj_to_string(self)
6357 
6358 
def __repr__(self)
Definition: z3py.py:6355
def arity (   self)
Return the number of arguments for each entry in the function interpretation `self`.

>>> f = Function('f', IntSort(), IntSort())
>>> s = Solver()
>>> s.add(f(0) == 1, f(1) == 1, f(2) == 0)
>>> s.check()
sat
>>> m = s.model()
>>> m[f].arity()
1

Definition at line 6293 of file z3py.py.

6293  def arity(self):
6294  """Return the number of arguments for each entry in the function interpretation `self`.
6295 
6296  >>> f = Function('f', IntSort(), IntSort())
6297  >>> s = Solver()
6298  >>> s.add(f(0) == 1, f(1) == 1, f(2) == 0)
6299  >>> s.check()
6300  sat
6301  >>> m = s.model()
6302  >>> m[f].arity()
6303  1
6304  """
6305  return int(Z3_func_interp_get_arity(self.ctx.ref(), self.f))
6306 
unsigned Z3_API Z3_func_interp_get_arity(Z3_context c, Z3_func_interp f)
Return the arity (number of arguments) of the given function interpretation.
def arity(self)
Definition: z3py.py:6293
def as_list (   self)
Return the function interpretation as a Python list.
>>> f = Function('f', IntSort(), IntSort())
>>> s = Solver()
>>> s.add(f(0) == 1, f(1) == 1, f(2) == 0)
>>> s.check()
sat
>>> m = s.model()
>>> m[f]
[2 -> 0, else -> 1]
>>> m[f].as_list()
[[2, 0], 1]

Definition at line 6338 of file z3py.py.

6338  def as_list(self):
6339  """Return the function interpretation as a Python list.
6340  >>> f = Function('f', IntSort(), IntSort())
6341  >>> s = Solver()
6342  >>> s.add(f(0) == 1, f(1) == 1, f(2) == 0)
6343  >>> s.check()
6344  sat
6345  >>> m = s.model()
6346  >>> m[f]
6347  [2 -> 0, else -> 1]
6348  >>> m[f].as_list()
6349  [[2, 0], 1]
6350  """
6351  r = [self.entry(i).as_list() for i in range(self.num_entries())]
6352  r.append(self.else_value())
6353  return r
6354 
def entry(self, idx)
Definition: z3py.py:6307
expr range(expr const &lo, expr const &hi)
Definition: z3++.h:4085
def else_value(self)
Definition: z3py.py:6254
def as_list(self)
Definition: z3py.py:6338
def num_entries(self)
Definition: z3py.py:6277
def else_value (   self)
Return the `else` value for a function interpretation.
Return None if Z3 did not specify the `else` value for
this object.

>>> f = Function('f', IntSort(), IntSort())
>>> s = Solver()
>>> s.add(f(0) == 1, f(1) == 1, f(2) == 0)
>>> s.check()
sat
>>> m = s.model()
>>> m[f]
[2 -> 0, else -> 1]
>>> m[f].else_value()
1

Definition at line 6254 of file z3py.py.

Referenced by FuncInterp.as_list().

6254  def else_value(self):
6255  """
6256  Return the `else` value for a function interpretation.
6257  Return None if Z3 did not specify the `else` value for
6258  this object.
6259 
6260  >>> f = Function('f', IntSort(), IntSort())
6261  >>> s = Solver()
6262  >>> s.add(f(0) == 1, f(1) == 1, f(2) == 0)
6263  >>> s.check()
6264  sat
6265  >>> m = s.model()
6266  >>> m[f]
6267  [2 -> 0, else -> 1]
6268  >>> m[f].else_value()
6269  1
6270  """
6271  r = Z3_func_interp_get_else(self.ctx.ref(), self.f)
6272  if r:
6273  return _to_expr_ref(r, self.ctx)
6274  else:
6275  return None
6276 
Z3_ast Z3_API Z3_func_interp_get_else(Z3_context c, Z3_func_interp f)
Return the 'else' value of the given function interpretation.
def else_value(self)
Definition: z3py.py:6254
def entry (   self,
  idx 
)
Return an entry at position `idx < self.num_entries()` in the function interpretation `self`.

>>> f = Function('f', IntSort(), IntSort())
>>> s = Solver()
>>> s.add(f(0) == 1, f(1) == 1, f(2) == 0)
>>> s.check()
sat
>>> m = s.model()
>>> m[f]
[2 -> 0, else -> 1]
>>> m[f].num_entries()
1
>>> m[f].entry(0)
[2, 0]

Definition at line 6307 of file z3py.py.

Referenced by FuncInterp.as_list().

6307  def entry(self, idx):
6308  """Return an entry at position `idx < self.num_entries()` in the function interpretation `self`.
6309 
6310  >>> f = Function('f', IntSort(), IntSort())
6311  >>> s = Solver()
6312  >>> s.add(f(0) == 1, f(1) == 1, f(2) == 0)
6313  >>> s.check()
6314  sat
6315  >>> m = s.model()
6316  >>> m[f]
6317  [2 -> 0, else -> 1]
6318  >>> m[f].num_entries()
6319  1
6320  >>> m[f].entry(0)
6321  [2, 0]
6322  """
6323  if idx >= self.num_entries():
6324  raise IndexError
6325  return FuncEntry(Z3_func_interp_get_entry(self.ctx.ref(), self.f, idx), self.ctx)
6326 
def entry(self, idx)
Definition: z3py.py:6307
Definition: z3py.py:6132
Z3_func_entry Z3_API Z3_func_interp_get_entry(Z3_context c, Z3_func_interp f, unsigned i)
Return a "point" of the given function interpretation. It represents the value of f in a particular p...
def num_entries(self)
Definition: z3py.py:6277
def num_entries (   self)
Return the number of entries/points in the function interpretation `self`.

>>> f = Function('f', IntSort(), IntSort())
>>> s = Solver()
>>> s.add(f(0) == 1, f(1) == 1, f(2) == 0)
>>> s.check()
sat
>>> m = s.model()
>>> m[f]
[2 -> 0, else -> 1]
>>> m[f].num_entries()
1

Definition at line 6277 of file z3py.py.

Referenced by FuncInterp.as_list(), and FuncInterp.entry().

6277  def num_entries(self):
6278  """Return the number of entries/points in the function interpretation `self`.
6279 
6280  >>> f = Function('f', IntSort(), IntSort())
6281  >>> s = Solver()
6282  >>> s.add(f(0) == 1, f(1) == 1, f(2) == 0)
6283  >>> s.check()
6284  sat
6285  >>> m = s.model()
6286  >>> m[f]
6287  [2 -> 0, else -> 1]
6288  >>> m[f].num_entries()
6289  1
6290  """
6291  return int(Z3_func_interp_get_num_entries(self.ctx.ref(), self.f))
6292 
unsigned Z3_API Z3_func_interp_get_num_entries(Z3_context c, Z3_func_interp f)
Return the number of entries in the given function interpretation.
def num_entries(self)
Definition: z3py.py:6277
def translate (   self,
  other_ctx 
)
Copy model 'self' to context 'other_ctx'.

Definition at line 6327 of file z3py.py.

Referenced by FuncInterp.__copy__(), and FuncInterp.__deepcopy__().

6327  def translate(self, other_ctx):
6328  """Copy model 'self' to context 'other_ctx'.
6329  """
6330  return ModelRef(Z3_model_translate(self.ctx.ref(), self.model, other_ctx.ref()), other_ctx)
6331 
Z3_model Z3_API Z3_model_translate(Z3_context c, Z3_model m, Z3_context dst)
translate model from context c to context dst.
def translate(self, other_ctx)
Definition: z3py.py:6327

Field Documentation

ctx
f