Z3
Public Member Functions | Data Fields
FuncEntry Class Reference

Public Member Functions

def __init__ (self, entry, ctx)
 
def __deepcopy__ (self, memo={})
 
def __del__ (self)
 
def num_args (self)
 
def arg_value (self, idx)
 
def value (self)
 
def as_list (self)
 
def __repr__ (self)
 

Data Fields

 entry
 
 ctx
 

Detailed Description

Store the value of the interpretation of a function in a particular point.

Definition at line 5736 of file z3py.py.

Constructor & Destructor Documentation

◆ __init__()

def __init__ (   self,
  entry,
  ctx 
)

Definition at line 5739 of file z3py.py.

5739  def __init__(self, entry, ctx):
5740  self.entry = entry
5741  self.ctx = ctx
5742  Z3_func_entry_inc_ref(self.ctx.ref(), self.entry)
5743 
void Z3_API Z3_func_entry_inc_ref(Z3_context c, Z3_func_entry e)
Increment the reference counter of the given Z3_func_entry object.

◆ __del__()

def __del__ (   self)

Definition at line 5747 of file z3py.py.

5747  def __del__(self):
5748  if self.ctx.ref() is not None:
5749  Z3_func_entry_dec_ref(self.ctx.ref(), self.entry)
5750 
void Z3_API Z3_func_entry_dec_ref(Z3_context c, Z3_func_entry e)
Decrement the reference counter of the given Z3_func_entry object.

Member Function Documentation

◆ __deepcopy__()

def __deepcopy__ (   self,
  memo = {} 
)

Definition at line 5744 of file z3py.py.

5744  def __deepcopy__(self, memo={}):
5745  return FuncEntry(self.entry, self.ctx)
5746 

◆ __repr__()

def __repr__ (   self)

Definition at line 5841 of file z3py.py.

5841  def __repr__(self):
5842  return repr(self.as_list())
5843 

◆ arg_value()

def arg_value (   self,
  idx 
)
Return the value of argument `idx`.

>>> f = Function('f', IntSort(), IntSort(), IntSort())
>>> s = Solver()
>>> s.add(f(0, 1) == 10, f(1, 2) == 20, f(1, 0) == 10)
>>> s.check()
sat
>>> m = s.model()
>>> f_i = m[f]
>>> f_i.num_entries()
1
>>> e = f_i.entry(0)
>>> e
[1, 2, 20]
>>> e.num_args()
2
>>> e.arg_value(0)
1
>>> e.arg_value(1)
2
>>> try:
...   e.arg_value(2)
... except IndexError:
...   print("index error")
index error

Definition at line 5769 of file z3py.py.

5769  def arg_value(self, idx):
5770  """Return the value of argument `idx`.
5771 
5772  >>> f = Function('f', IntSort(), IntSort(), IntSort())
5773  >>> s = Solver()
5774  >>> s.add(f(0, 1) == 10, f(1, 2) == 20, f(1, 0) == 10)
5775  >>> s.check()
5776  sat
5777  >>> m = s.model()
5778  >>> f_i = m[f]
5779  >>> f_i.num_entries()
5780  1
5781  >>> e = f_i.entry(0)
5782  >>> e
5783  [1, 2, 20]
5784  >>> e.num_args()
5785  2
5786  >>> e.arg_value(0)
5787  1
5788  >>> e.arg_value(1)
5789  2
5790  >>> try:
5791  ... e.arg_value(2)
5792  ... except IndexError:
5793  ... print("index error")
5794  index error
5795  """
5796  if idx >= self.num_args():
5797  raise IndexError
5798  return _to_expr_ref(Z3_func_entry_get_arg(self.ctx.ref(), self.entry, idx), self.ctx)
5799 
Z3_ast Z3_API Z3_func_entry_get_arg(Z3_context c, Z3_func_entry e, unsigned i)
Return an argument of a Z3_func_entry object.

Referenced by FuncEntry.as_list().

◆ as_list()

def as_list (   self)
Return entry `self` as a Python list.
>>> f = Function('f', IntSort(), IntSort(), IntSort())
>>> s = Solver()
>>> s.add(f(0, 1) == 10, f(1, 2) == 20, f(1, 0) == 10)
>>> s.check()
sat
>>> m = s.model()
>>> f_i = m[f]
>>> f_i.num_entries()
1
>>> e = f_i.entry(0)
>>> e.as_list()
[1, 2, 20]

Definition at line 5822 of file z3py.py.

5822  def as_list(self):
5823  """Return entry `self` as a Python list.
5824  >>> f = Function('f', IntSort(), IntSort(), IntSort())
5825  >>> s = Solver()
5826  >>> s.add(f(0, 1) == 10, f(1, 2) == 20, f(1, 0) == 10)
5827  >>> s.check()
5828  sat
5829  >>> m = s.model()
5830  >>> f_i = m[f]
5831  >>> f_i.num_entries()
5832  1
5833  >>> e = f_i.entry(0)
5834  >>> e.as_list()
5835  [1, 2, 20]
5836  """
5837  args = [ self.arg_value(i) for i in range(self.num_args())]
5838  args.append(self.value())
5839  return args
5840 
expr range(expr const &lo, expr const &hi)
Definition: z3++.h:3370

Referenced by FuncEntry.__repr__().

◆ num_args()

def num_args (   self)
Return the number of arguments in the given entry.

>>> f = Function('f', IntSort(), IntSort(), IntSort())
>>> s = Solver()
>>> s.add(f(0, 1) == 10, f(1, 2) == 20, f(1, 0) == 10)
>>> s.check()
sat
>>> m = s.model()
>>> f_i = m[f]
>>> f_i.num_entries()
1
>>> e = f_i.entry(0)
>>> e.num_args()
2

Definition at line 5751 of file z3py.py.

5751  def num_args(self):
5752  """Return the number of arguments in the given entry.
5753 
5754  >>> f = Function('f', IntSort(), IntSort(), IntSort())
5755  >>> s = Solver()
5756  >>> s.add(f(0, 1) == 10, f(1, 2) == 20, f(1, 0) == 10)
5757  >>> s.check()
5758  sat
5759  >>> m = s.model()
5760  >>> f_i = m[f]
5761  >>> f_i.num_entries()
5762  1
5763  >>> e = f_i.entry(0)
5764  >>> e.num_args()
5765  2
5766  """
5767  return int(Z3_func_entry_get_num_args(self.ctx.ref(), self.entry))
5768 
unsigned Z3_API Z3_func_entry_get_num_args(Z3_context c, Z3_func_entry e)
Return the number of arguments in a Z3_func_entry object.

Referenced by AstRef.__bool__(), FuncEntry.arg_value(), and FuncEntry.as_list().

◆ value()

def value (   self)
Return the value of the function at point `self`.

>>> f = Function('f', IntSort(), IntSort(), IntSort())
>>> s = Solver()
>>> s.add(f(0, 1) == 10, f(1, 2) == 20, f(1, 0) == 10)
>>> s.check()
sat
>>> m = s.model()
>>> f_i = m[f]
>>> f_i.num_entries()
1
>>> e = f_i.entry(0)
>>> e
[1, 2, 20]
>>> e.num_args()
2
>>> e.value()
20

Definition at line 5800 of file z3py.py.

5800  def value(self):
5801  """Return the value of the function at point `self`.
5802 
5803  >>> f = Function('f', IntSort(), IntSort(), IntSort())
5804  >>> s = Solver()
5805  >>> s.add(f(0, 1) == 10, f(1, 2) == 20, f(1, 0) == 10)
5806  >>> s.check()
5807  sat
5808  >>> m = s.model()
5809  >>> f_i = m[f]
5810  >>> f_i.num_entries()
5811  1
5812  >>> e = f_i.entry(0)
5813  >>> e
5814  [1, 2, 20]
5815  >>> e.num_args()
5816  2
5817  >>> e.value()
5818  20
5819  """
5820  return _to_expr_ref(Z3_func_entry_get_value(self.ctx.ref(), self.entry), self.ctx)
5821 
Z3_ast Z3_API Z3_func_entry_get_value(Z3_context c, Z3_func_entry e)
Return the value of this point.

Referenced by FuncEntry.as_list().

Field Documentation

◆ ctx

ctx

Definition at line 5741 of file z3py.py.

Referenced by Probe.__call__(), FuncInterp.__copy__(), ModelRef.__copy__(), Solver.__copy__(), FuncEntry.__deepcopy__(), FuncInterp.__deepcopy__(), ModelRef.__deepcopy__(), Statistics.__deepcopy__(), Solver.__deepcopy__(), Fixedpoint.__deepcopy__(), Optimize.__deepcopy__(), ApplyResult.__deepcopy__(), Tactic.__deepcopy__(), Probe.__deepcopy__(), FuncEntry.__del__(), FuncInterp.__del__(), ModelRef.__del__(), Statistics.__del__(), Solver.__del__(), Fixedpoint.__del__(), Optimize.__del__(), ApplyResult.__del__(), Tactic.__del__(), Probe.__del__(), Probe.__eq__(), Probe.__ge__(), ModelRef.__getitem__(), Statistics.__getitem__(), ApplyResult.__getitem__(), Probe.__gt__(), Probe.__le__(), ModelRef.__len__(), Statistics.__len__(), ApplyResult.__len__(), Probe.__lt__(), Probe.__ne__(), Statistics.__repr__(), Fixedpoint.add_cover(), Fixedpoint.add_rule(), Optimize.add_soft(), Tactic.apply(), FuncEntry.arg_value(), FuncInterp.arity(), ApplyResult.as_expr(), Solver.assert_and_track(), Optimize.assert_and_track(), Solver.assert_exprs(), Fixedpoint.assert_exprs(), Optimize.assert_exprs(), Solver.assertions(), Optimize.assertions(), Solver.check(), Optimize.check(), Solver.consequences(), ModelRef.decls(), Solver.dimacs(), FuncInterp.else_value(), FuncInterp.entry(), ModelRef.eval(), Solver.from_file(), Optimize.from_file(), Solver.from_string(), Optimize.from_string(), Fixedpoint.get_answer(), Fixedpoint.get_assertions(), Fixedpoint.get_cover_delta(), Fixedpoint.get_ground_sat_answer(), ModelRef.get_interp(), Statistics.get_key_value(), Fixedpoint.get_num_levels(), Fixedpoint.get_rule_names_along_trace(), Fixedpoint.get_rules(), Fixedpoint.get_rules_along_trace(), ModelRef.get_sort(), ModelRef.get_universe(), Solver.help(), Fixedpoint.help(), Optimize.help(), Tactic.help(), Solver.import_model_converter(), Statistics.keys(), Optimize.maximize(), Optimize.minimize(), Solver.model(), Optimize.model(), Solver.non_units(), FuncEntry.num_args(), FuncInterp.num_entries(), Solver.num_scopes(), ModelRef.num_sorts(), Optimize.objectives(), Solver.param_descrs(), Fixedpoint.param_descrs(), Optimize.param_descrs(), Tactic.param_descrs(), Fixedpoint.parse_file(), Fixedpoint.parse_string(), Solver.pop(), Optimize.pop(), Solver.proof(), Solver.push(), Optimize.push(), Fixedpoint.query(), Fixedpoint.query_from_lvl(), Solver.reason_unknown(), Fixedpoint.reason_unknown(), Optimize.reason_unknown(), Fixedpoint.register_relation(), Solver.reset(), Solver.set(), Fixedpoint.set(), Optimize.set(), Fixedpoint.set_predicate_representation(), ModelRef.sexpr(), Solver.sexpr(), Fixedpoint.sexpr(), Optimize.sexpr(), ApplyResult.sexpr(), Tactic.solver(), Solver.statistics(), Fixedpoint.statistics(), Optimize.statistics(), Solver.to_smt2(), Fixedpoint.to_string(), Solver.trail(), Solver.trail_levels(), FuncInterp.translate(), ModelRef.translate(), Solver.translate(), Solver.units(), Solver.unsat_core(), Optimize.unsat_core(), Fixedpoint.update_rule(), and FuncEntry.value().

◆ entry

entry