Z3
Public Member Functions | Data Fields
ParamsRef Class Reference

Parameter Sets. More...

Public Member Functions

def __init__ (self, ctx=None, params=None)
 
def __deepcopy__ (self, memo={})
 
def __del__ (self)
 
def set (self, name, val)
 
def __repr__ (self)
 
def validate (self, ds)
 

Data Fields

 ctx
 
 params
 

Detailed Description

Parameter Sets.

Set of parameters used to configure Solvers, Tactics and Simplifiers in Z3.

Consider using the function `args2params` to create instances of this object.

Definition at line 5006 of file z3py.py.

Constructor & Destructor Documentation

◆ __init__()

def __init__ (   self,
  ctx = None,
  params = None 
)

Definition at line 5011 of file z3py.py.

5011  def __init__(self, ctx=None, params=None):
5012  self.ctx = _get_ctx(ctx)
5013  if params is None:
5014  self.params = Z3_mk_params(self.ctx.ref())
5015  else:
5016  self.params = params
5017  Z3_params_inc_ref(self.ctx.ref(), self.params)
5018 
Z3_params Z3_API Z3_mk_params(Z3_context c)
Create a Z3 (empty) parameter set. Starting at Z3 4.0, parameter sets are used to configure many comp...
void Z3_API Z3_params_inc_ref(Z3_context c, Z3_params p)
Increment the reference counter of the given parameter set.

◆ __del__()

def __del__ (   self)

Definition at line 5022 of file z3py.py.

5022  def __del__(self):
5023  if self.ctx.ref() is not None:
5024  Z3_params_dec_ref(self.ctx.ref(), self.params)
5025 
void Z3_API Z3_params_dec_ref(Z3_context c, Z3_params p)
Decrement the reference counter of the given parameter set.

Member Function Documentation

◆ __deepcopy__()

def __deepcopy__ (   self,
  memo = {} 
)

Definition at line 5019 of file z3py.py.

5019  def __deepcopy__(self, memo={}):
5020  return ParamsRef(self.ctx, self.params)
5021 

◆ __repr__()

def __repr__ (   self)

Definition at line 5043 of file z3py.py.

5043  def __repr__(self):
5044  return Z3_params_to_string(self.ctx.ref(), self.params)
5045 
Z3_string Z3_API Z3_params_to_string(Z3_context c, Z3_params p)
Convert a parameter set into a string. This function is mainly used for printing the contents of a pa...

◆ set()

def set (   self,
  name,
  val 
)
Set parameter name with value val.

Definition at line 5026 of file z3py.py.

5026  def set(self, name, val):
5027  """Set parameter name with value val."""
5028  if z3_debug():
5029  _z3_assert(isinstance(name, str), "parameter name must be a string")
5030  name_sym = to_symbol(name, self.ctx)
5031  if isinstance(val, bool):
5032  Z3_params_set_bool(self.ctx.ref(), self.params, name_sym, val)
5033  elif _is_int(val):
5034  Z3_params_set_uint(self.ctx.ref(), self.params, name_sym, val)
5035  elif isinstance(val, float):
5036  Z3_params_set_double(self.ctx.ref(), self.params, name_sym, val)
5037  elif isinstance(val, str):
5038  Z3_params_set_symbol(self.ctx.ref(), self.params, name_sym, to_symbol(val, self.ctx))
5039  else:
5040  if z3_debug():
5041  _z3_assert(False, "invalid parameter value")
5042 
void Z3_API Z3_params_set_uint(Z3_context c, Z3_params p, Z3_symbol k, unsigned v)
Add a unsigned parameter k with value v to the parameter set p.
def to_symbol(s, ctx=None)
Definition: z3py.py:111
def z3_debug()
Definition: z3py.py:58
void Z3_API Z3_params_set_double(Z3_context c, Z3_params p, Z3_symbol k, double v)
Add a double parameter k with value v to the parameter set p.
void Z3_API Z3_params_set_symbol(Z3_context c, Z3_params p, Z3_symbol k, Z3_symbol v)
Add a symbol parameter k with value v to the parameter set p.
void Z3_API Z3_params_set_bool(Z3_context c, Z3_params p, Z3_symbol k, bool v)
Add a Boolean parameter k with value v to the parameter set p.

◆ validate()

def validate (   self,
  ds 
)

Definition at line 5046 of file z3py.py.

5046  def validate(self, ds):
5047  _z3_assert(isinstance(ds, ParamDescrsRef), "parameter description set expected")
5048  Z3_params_validate(self.ctx.ref(), self.params, ds.descr)
5049 
void Z3_API Z3_params_validate(Z3_context c, Z3_params p, Z3_param_descrs d)
Validate the parameter set p against the parameter description set d.

Field Documentation

◆ ctx

ctx

Definition at line 5012 of file z3py.py.

Referenced by Probe.__call__(), Fixedpoint.__deepcopy__(), Optimize.__deepcopy__(), ApplyResult.__deepcopy__(), Tactic.__deepcopy__(), Probe.__deepcopy__(), Fixedpoint.__del__(), Optimize.__del__(), ApplyResult.__del__(), Tactic.__del__(), Probe.__del__(), Probe.__eq__(), Probe.__ge__(), ApplyResult.__getitem__(), Probe.__gt__(), Probe.__le__(), ApplyResult.__len__(), Probe.__lt__(), Probe.__ne__(), Fixedpoint.add_cover(), Fixedpoint.add_rule(), Optimize.add_soft(), Tactic.apply(), ApplyResult.as_expr(), Optimize.assert_and_track(), Fixedpoint.assert_exprs(), Optimize.assert_exprs(), Optimize.assertions(), Optimize.check(), Optimize.from_file(), Optimize.from_string(), Fixedpoint.get_answer(), Fixedpoint.get_assertions(), Fixedpoint.get_cover_delta(), Fixedpoint.get_ground_sat_answer(), Fixedpoint.get_num_levels(), Fixedpoint.get_rule_names_along_trace(), Fixedpoint.get_rules(), Fixedpoint.get_rules_along_trace(), Fixedpoint.help(), Optimize.help(), Tactic.help(), Optimize.maximize(), Optimize.minimize(), Optimize.model(), Optimize.objectives(), Fixedpoint.param_descrs(), Optimize.param_descrs(), Tactic.param_descrs(), Fixedpoint.parse_file(), Fixedpoint.parse_string(), Optimize.pop(), Optimize.push(), Fixedpoint.query(), Fixedpoint.query_from_lvl(), Fixedpoint.reason_unknown(), Optimize.reason_unknown(), Fixedpoint.register_relation(), Fixedpoint.set(), Optimize.set(), Fixedpoint.set_predicate_representation(), Fixedpoint.sexpr(), Optimize.sexpr(), ApplyResult.sexpr(), Tactic.solver(), Fixedpoint.statistics(), Optimize.statistics(), Solver.to_smt2(), Fixedpoint.to_string(), Optimize.unsat_core(), and Fixedpoint.update_rule().

◆ params

params

Definition at line 5014 of file z3py.py.