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 5773 of file z3py.py.

Constructor & Destructor Documentation

◆ __init__()

def __init__ (   self,
  entry,
  ctx 
)

Definition at line 5776 of file z3py.py.

5776  def __init__(self, entry, ctx):
5777  self.entry = entry
5778  self.ctx = ctx
5779  Z3_func_entry_inc_ref(self.ctx.ref(), self.entry)
5780 

◆ __del__()

def __del__ (   self)

Definition at line 5784 of file z3py.py.

5784  def __del__(self):
5785  if self.ctx.ref() is not None:
5786  Z3_func_entry_dec_ref(self.ctx.ref(), self.entry)
5787 

Member Function Documentation

◆ __deepcopy__()

def __deepcopy__ (   self,
  memo = {} 
)

Definition at line 5781 of file z3py.py.

5781  def __deepcopy__(self, memo={}):
5782  return FuncEntry(self.entry, self.ctx)
5783 

◆ __repr__()

def __repr__ (   self)

Definition at line 5878 of file z3py.py.

5878  def __repr__(self):
5879  return repr(self.as_list())
5880 

◆ 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 5806 of file z3py.py.

5806  def arg_value(self, idx):
5807  """Return the value of argument `idx`.
5808 
5809  >>> f = Function('f', IntSort(), IntSort(), IntSort())
5810  >>> s = Solver()
5811  >>> s.add(f(0, 1) == 10, f(1, 2) == 20, f(1, 0) == 10)
5812  >>> s.check()
5813  sat
5814  >>> m = s.model()
5815  >>> f_i = m[f]
5816  >>> f_i.num_entries()
5817  1
5818  >>> e = f_i.entry(0)
5819  >>> e
5820  [1, 2, 20]
5821  >>> e.num_args()
5822  2
5823  >>> e.arg_value(0)
5824  1
5825  >>> e.arg_value(1)
5826  2
5827  >>> try:
5828  ... e.arg_value(2)
5829  ... except IndexError:
5830  ... print("index error")
5831  index error
5832  """
5833  if idx >= self.num_args():
5834  raise IndexError
5835  return _to_expr_ref(Z3_func_entry_get_arg(self.ctx.ref(), self.entry, idx), self.ctx)
5836 

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 5859 of file z3py.py.

5859  def as_list(self):
5860  """Return entry `self` as a Python list.
5861  >>> f = Function('f', IntSort(), IntSort(), IntSort())
5862  >>> s = Solver()
5863  >>> s.add(f(0, 1) == 10, f(1, 2) == 20, f(1, 0) == 10)
5864  >>> s.check()
5865  sat
5866  >>> m = s.model()
5867  >>> f_i = m[f]
5868  >>> f_i.num_entries()
5869  1
5870  >>> e = f_i.entry(0)
5871  >>> e.as_list()
5872  [1, 2, 20]
5873  """
5874  args = [ self.arg_value(i) for i in range(self.num_args())]
5875  args.append(self.value())
5876  return args
5877 

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 5788 of file z3py.py.

5788  def num_args(self):
5789  """Return the number of arguments in the given entry.
5790 
5791  >>> f = Function('f', IntSort(), IntSort(), IntSort())
5792  >>> s = Solver()
5793  >>> s.add(f(0, 1) == 10, f(1, 2) == 20, f(1, 0) == 10)
5794  >>> s.check()
5795  sat
5796  >>> m = s.model()
5797  >>> f_i = m[f]
5798  >>> f_i.num_entries()
5799  1
5800  >>> e = f_i.entry(0)
5801  >>> e.num_args()
5802  2
5803  """
5804  return int(Z3_func_entry_get_num_args(self.ctx.ref(), self.entry))
5805 

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 5837 of file z3py.py.

5837  def value(self):
5838  """Return the value of the function at point `self`.
5839 
5840  >>> f = Function('f', IntSort(), IntSort(), IntSort())
5841  >>> s = Solver()
5842  >>> s.add(f(0, 1) == 10, f(1, 2) == 20, f(1, 0) == 10)
5843  >>> s.check()
5844  sat
5845  >>> m = s.model()
5846  >>> f_i = m[f]
5847  >>> f_i.num_entries()
5848  1
5849  >>> e = f_i.entry(0)
5850  >>> e
5851  [1, 2, 20]
5852  >>> e.num_args()
5853  2
5854  >>> e.value()
5855  20
5856  """
5857  return _to_expr_ref(Z3_func_entry_get_value(self.ctx.ref(), self.entry), self.ctx)
5858 

Referenced by FuncEntry.as_list().

Field Documentation

◆ ctx

ctx

Definition at line 5778 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(), UserPropagateBase.conflict(), Solver.consequences(), UserPropagateBase.ctx_ref(), 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
Z3_func_entry_inc_ref
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.
z3py.UserPropagateBase.__init__
def __init__(self, s, ctx=None)
Definition: z3py.py:10582
z3::range
expr range(expr const &lo, expr const &hi)
Definition: z3++.h:3515
z3py.UserPropagateBase.__del__
def __del__(self)
Definition: z3py.py:10607
Z3_func_entry_get_arg
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.
Z3_func_entry_dec_ref
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.
Z3_func_entry_get_num_args
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.
Z3_func_entry_get_value
Z3_ast Z3_API Z3_func_entry_get_value(Z3_context c, Z3_func_entry e)
Return the value of this point.