Public Member Functions
	__init__ (self, tactic, ctx=None)

	__deepcopy__ (self, memo={})

	__del__ (self)

	solver (self, logFile=None)

	apply (self, goal, arguments, *keywords)

	__call__ (self, goal, arguments, *keywords)

	help (self)

	param_descrs (self)

Data Fields
	ctx

	tactic

Detailed Description

Tactics transform, solver and/or simplify sets of constraints (Goal).
A Tactic can be converted into a Solver using the method solver().

Several combinators are available for creating new tactics using the built-in ones:
Then(), OrElse(), FailIf(), Repeat(), When(), Cond().

Definition at line 8514 of file z3py.py.

Constructor & Destructor Documentation

◆ init()

__init__	(	self,
		tactic,
		ctx = `None`
	)

Definition at line 8522 of file z3py.py.

    def __init__(self, tactic, ctx=None):
        self.ctx = _get_ctx(ctx)
        self.tactic = None
        if isinstance(tactic, TacticObj):
            self.tactic = tactic
        else:
            if z3_debug():
                _z3_assert(isinstance(tactic, str), "tactic name expected")
            try:
                self.tactic = Z3_mk_tactic(self.ctx.ref(), str(tactic))
            except Z3Exception:
                raise Z3Exception("unknown tactic '%s'" % tactic)
        Z3_tactic_inc_ref(self.ctx.ref(), self.tactic)
 

◆ del()

__del__ ( self )

Definition at line 8539 of file z3py.py.

    def __del__(self):
        if self.tactic is not None and self.ctx.ref() is not None and Z3_tactic_dec_ref is not None:
            Z3_tactic_dec_ref(self.ctx.ref(), self.tactic)
 

Member Function Documentation

◆ call()

__call__	(		self,
			goal,
		*	arguments,
		**	keywords
	)

Apply tactic `self` to the given goal or Z3 Boolean expression using the given options.

>>> x, y = Ints('x y')
>>> t = Tactic('solve-eqs')
>>> t(And(x == 0, y >= x + 1))
[[y >= 1]]

Definition at line 8577 of file z3py.py.

    def __call__(self, goal, *arguments, **keywords):
        """Apply tactic `self` to the given goal or Z3 Boolean expression using the given options.
 
        >>> x, y = Ints('x y')
        >>> t = Tactic('solve-eqs')
        >>> t(And(x == 0, y >= x + 1))
        [[y >= 1]]
        """
        return self.apply(goal, *arguments, **keywords)
 

◆ deepcopy()

__deepcopy__	(	self,
		memo = `{}`
	)

Definition at line 8536 of file z3py.py.

    def __deepcopy__(self, memo={}):
        return Tactic(self.tactic, self.ctx)
 

◆ apply()

apply	(		self,
			goal,
		*	arguments,
		**	keywords
	)

Apply tactic `self` to the given goal or Z3 Boolean expression using the given options.

>>> x, y = Ints('x y')
>>> t = Tactic('solve-eqs')
>>> t.apply(And(x == 0, y >= x + 1))
[[y >= 1]]

Definition at line 8560 of file z3py.py.

    def apply(self, goal, *arguments, **keywords):
        """Apply tactic `self` to the given goal or Z3 Boolean expression using the given options.
 
        >>> x, y = Ints('x y')
        >>> t = Tactic('solve-eqs')
        >>> t.apply(And(x == 0, y >= x + 1))
        [[y >= 1]]
        """
        if z3_debug():
            _z3_assert(isinstance(goal, (Goal, BoolRef)), "Z3 Goal or Boolean expressions expected")
        goal = _to_goal(goal)
        if len(arguments) > 0 or len(keywords) > 0:
            p = args2params(arguments, keywords, self.ctx)
            return ApplyResult(Z3_tactic_apply_ex(self.ctx.ref(), self.tactic, goal.goal, p.params), self.ctx)
        else:
            return ApplyResult(Z3_tactic_apply(self.ctx.ref(), self.tactic, goal.goal), self.ctx)
 

◆ help()

help ( self )

Display a string containing a description of the available options for the `self` tactic.

Definition at line 8587 of file z3py.py.

    def help(self):
        """Display a string containing a description of the available options for the `self` tactic."""
        print(Z3_tactic_get_help(self.ctx.ref(), self.tactic))
 

◆ param_descrs()

param_descrs ( self )

Return the parameter description set.

Definition at line 8591 of file z3py.py.

    def param_descrs(self):
        """Return the parameter description set."""
        return ParamDescrsRef(Z3_tactic_get_param_descrs(self.ctx.ref(), self.tactic), self.ctx)
 
 

◆ solver()

solver	(	self,
		logFile = `None`
	)

Create a solver using the tactic `self`.

The solver supports the methods `push()` and `pop()`, but it
will always solve each `check()` from scratch.

>>> t = Then('simplify', 'nlsat')
>>> s = t.solver()
>>> x = Real('x')
>>> s.add(x**2 == 2, x > 0)
>>> s.check()
sat
>>> s.model()
[x = 1.4142135623?]

Definition at line 8543 of file z3py.py.

    def solver(self, logFile=None):
        """Create a solver using the tactic `self`.
 
        The solver supports the methods `push()` and `pop()`, but it
        will always solve each `check()` from scratch.
 
        >>> t = Then('simplify', 'nlsat')
        >>> s = t.solver()
        >>> x = Real('x')
        >>> s.add(x**2 == 2, x > 0)
        >>> s.check()
        sat
        >>> s.model()
        [x = 1.4142135623?]
        """
        return Solver(Z3_mk_solver_from_tactic(self.ctx.ref(), self.tactic), self.ctx, logFile)
 

Referenced by Solver.__del__(), Solver.assert_and_track(), Solver.assert_exprs(), Solver.check(), Solver.model(), Solver.num_scopes(), Solver.pop(), Solver.push(), Solver.reset(), and Solver.set().

Field Documentation

◆ ctx

ctx

Definition at line 8523 of file z3py.py.

Referenced by ArithRef.__add__(), BitVecRef.__add__(), BitVecRef.__and__(), FuncDeclRef.__call__(), AstMap.__contains__(), AstRef.__copy__(), Goal.__copy__(), AstVector.__copy__(), FuncInterp.__copy__(), ModelRef.__copy__(), AstRef.__deepcopy__(), Datatype.__deepcopy__(), ParamsRef.__deepcopy__(), ParamDescrsRef.__deepcopy__(), Goal.__deepcopy__(), AstVector.__deepcopy__(), AstMap.__deepcopy__(), FuncEntry.__deepcopy__(), FuncInterp.__deepcopy__(), ModelRef.__deepcopy__(), Statistics.__deepcopy__(), Context.__del__(), AstRef.__del__(), ScopedConstructor.__del__(), ScopedConstructorList.__del__(), ParamsRef.__del__(), ParamDescrsRef.__del__(), Goal.__del__(), AstVector.__del__(), AstMap.__del__(), FuncEntry.__del__(), FuncInterp.__del__(), ModelRef.__del__(), Statistics.__del__(), Solver.__del__(), ArithRef.__div__(), BitVecRef.__div__(), ExprRef.__eq__(), ArithRef.__ge__(), BitVecRef.__ge__(), AstVector.__getitem__(), ModelRef.__getitem__(), Statistics.__getitem__(), AstMap.__getitem__(), ArithRef.__gt__(), BitVecRef.__gt__(), BitVecRef.__invert__(), ArithRef.__le__(), BitVecRef.__le__(), AstVector.__len__(), AstMap.__len__(), ModelRef.__len__(), Statistics.__len__(), BitVecRef.__lshift__(), ArithRef.__lt__(), BitVecRef.__lt__(), ArithRef.__mod__(), BitVecRef.__mod__(), BoolRef.__mul__(), ArithRef.__mul__(), BitVecRef.__mul__(), ExprRef.__ne__(), ArithRef.__neg__(), BitVecRef.__neg__(), BitVecRef.__or__(), ArithRef.__pow__(), ArithRef.__radd__(), BitVecRef.__radd__(), BitVecRef.__rand__(), ArithRef.__rdiv__(), BitVecRef.__rdiv__(), ParamsRef.__repr__(), ParamDescrsRef.__repr__(), AstMap.__repr__(), Statistics.__repr__(), BitVecRef.__rlshift__(), ArithRef.__rmod__(), BitVecRef.__rmod__(), ArithRef.__rmul__(), BitVecRef.__rmul__(), BitVecRef.__ror__(), ArithRef.__rpow__(), BitVecRef.__rrshift__(), BitVecRef.__rshift__(), ArithRef.__rsub__(), BitVecRef.__rsub__(), BitVecRef.__rxor__(), AstVector.__setitem__(), AstMap.__setitem__(), ArithRef.__sub__(), BitVecRef.__sub__(), BitVecRef.__xor__(), DatatypeSortRef.accessor(), ExprRef.arg(), FuncEntry.arg_value(), FuncInterp.arity(), Goal.as_expr(), Solver.assert_and_track(), Goal.assert_exprs(), Solver.assert_exprs(), QuantifierRef.body(), Solver.check(), Goal.convert_model(), AstRef.ctx_ref(), ExprRef.decl(), ModelRef.decls(), ArrayRef.default(), RatNumRef.denominator(), Goal.depth(), Goal.dimacs(), FuncDeclRef.domain(), ArraySortRef.domain_n(), FuncInterp.else_value(), FuncInterp.entry(), AstMap.erase(), ModelRef.eval(), Goal.get(), ParamDescrsRef.get_documentation(), ModelRef.get_interp(), Statistics.get_key_value(), ParamDescrsRef.get_kind(), ParamDescrsRef.get_name(), ModelRef.get_sort(), ModelRef.get_universe(), Goal.inconsistent(), AstMap.keys(), Statistics.keys(), Solver.model(), SortRef.name(), QuantifierRef.no_pattern(), FuncEntry.num_args(), FuncInterp.num_entries(), Solver.num_scopes(), ModelRef.num_sorts(), FuncDeclRef.params(), QuantifierRef.pattern(), AlgebraicNumRef.poly(), Solver.pop(), Goal.prec(), ModelRef.project(), ModelRef.project_with_witness(), Solver.push(), AstVector.push(), QuantifierRef.qid(), FuncDeclRef.range(), ArraySortRef.range(), DatatypeSortRef.recognizer(), Context.ref(), AstMap.reset(), Solver.reset(), AstVector.resize(), Solver.set(), ParamsRef.set(), Goal.sexpr(), AstVector.sexpr(), ModelRef.sexpr(), ParamDescrsRef.size(), Goal.size(), QuantifierRef.skolem_id(), AstVector.translate(), AstRef.translate(), Goal.translate(), ModelRef.translate(), ExprRef.update(), ParamsRef.validate(), FuncEntry.value(), QuantifierRef.var_name(), and QuantifierRef.var_sort().

◆ tactic

tactic

Definition at line 8524 of file z3py.py.

Public Member Functions

Data Fields