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Z3
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Z3
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Public Member Functions | |
| def | __init__ |
| def | __del__ |
| def | solver |
| def | apply |
| def | __call__ |
| def | help |
| def | param_descrs |
Data Fields | |
| ctx | |
| tactic | |
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().
| def __init__ | ( | self, | |
| tactic, | |||
ctx = None |
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| ) |
Definition at line 6661 of file z3py.py.
06661 06662 def __init__(self, tactic, ctx=None): 06663 self.ctx = _get_ctx(ctx) 06664 self.tactic = None 06665 if isinstance(tactic, TacticObj): 06666 self.tactic = tactic 06667 else: 06668 if __debug__: 06669 _z3_assert(isinstance(tactic, str), "tactic name expected") 06670 try: 06671 self.tactic = Z3_mk_tactic(self.ctx.ref(), str(tactic)) 06672 except Z3Exception: 06673 raise Z3Exception("unknown tactic '%s'" % tactic) 06674 Z3_tactic_inc_ref(self.ctx.ref(), self.tactic)
| def __del__ | ( | self | ) |
| 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]]
Definition at line 6713 of file z3py.py.
06713 06714 def __call__(self, goal, *arguments, **keywords): 06715 """Apply tactic `self` to the given goal or Z3 Boolean expression using the given options. 06716 06717 >>> x, y = Ints('x y') 06718 >>> t = Tactic('solve-eqs') 06719 >>> t(And(x == 0, y >= x + 1)) 06720 [[y >= 1]] 06721 """ 06722 return self.apply(goal, *arguments, **keywords)
| 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]]
Definition at line 6696 of file z3py.py.
Referenced by Tactic.__call__().
06696 06697 def apply(self, goal, *arguments, **keywords): 06698 """Apply tactic `self` to the given goal or Z3 Boolean expression using the given options. 06699 06700 >>> x, y = Ints('x y') 06701 >>> t = Tactic('solve-eqs') 06702 >>> t.apply(And(x == 0, y >= x + 1)) 06703 [[y >= 1]] 06704 """ 06705 if __debug__: 06706 _z3_assert(isinstance(goal, Goal) or isinstance(goal, BoolRef), "Z3 Goal or Boolean expressions expected") 06707 goal = _to_goal(goal) 06708 if len(arguments) > 0 or len(keywords) > 0: 06709 p = args2params(arguments, keywords, self.ctx) 06710 return ApplyResult(Z3_tactic_apply_ex(self.ctx.ref(), self.tactic, goal.goal, p.params), self.ctx) 06711 else: 06712 return ApplyResult(Z3_tactic_apply(self.ctx.ref(), self.tactic, goal.goal), self.ctx)
| def help | ( | self | ) |
Display a string containing a description of the available options for the `self` tactic.
Definition at line 6723 of file z3py.py.
06723 06724 def help(self): 06725 """Display a string containing a description of the available options for the `self` tactic.""" 06726 print(Z3_tactic_get_help(self.ctx.ref(), self.tactic))
| def param_descrs | ( | self | ) |
Return the parameter description set.
Definition at line 6727 of file z3py.py.
06727 06728 def param_descrs(self): 06729 """Return the parameter description set.""" 06730 return ParamDescrsRef(Z3_tactic_get_param_descrs(self.ctx.ref(), self.tactic), self.ctx)
| def solver | ( | self | ) |
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 6679 of file z3py.py.
06679 06680 def solver(self): 06681 """Create a solver using the tactic `self`. 06682 06683 The solver supports the methods `push()` and `pop()`, but it 06684 will always solve each `check()` from scratch. 06685 06686 >>> t = Then('simplify', 'nlsat') 06687 >>> s = t.solver() 06688 >>> x = Real('x') 06689 >>> s.add(x**2 == 2, x > 0) 06690 >>> s.check() 06691 sat 06692 >>> s.model() 06693 [x = 1.4142135623?] 06694 """ 06695 return Solver(Z3_mk_solver_from_tactic(self.ctx.ref(), self.tactic), self.ctx)
Definition at line 6661 of file z3py.py.
Referenced by ArithRef::__add__(), BitVecRef::__add__(), BitVecRef::__and__(), FuncDeclRef::__call__(), ArithRef::__div__(), BitVecRef::__div__(), ExprRef::__eq__(), Probe::__eq__(), ArithRef::__ge__(), BitVecRef::__ge__(), Probe::__ge__(), ArrayRef::__getitem__(), ArithRef::__gt__(), BitVecRef::__gt__(), Probe::__gt__(), BitVecRef::__invert__(), ArithRef::__le__(), BitVecRef::__le__(), Probe::__le__(), BitVecRef::__lshift__(), ArithRef::__lt__(), BitVecRef::__lt__(), Probe::__lt__(), ArithRef::__mod__(), BitVecRef::__mod__(), ArithRef::__mul__(), BitVecRef::__mul__(), ExprRef::__ne__(), Probe::__ne__(), ArithRef::__neg__(), BitVecRef::__neg__(), BitVecRef::__or__(), ArithRef::__pow__(), ArithRef::__radd__(), BitVecRef::__radd__(), BitVecRef::__rand__(), ArithRef::__rdiv__(), BitVecRef::__rdiv__(), BitVecRef::__rlshift__(), ArithRef::__rmod__(), BitVecRef::__rmod__(), ArithRef::__rmul__(), BitVecRef::__rmul__(), BitVecRef::__ror__(), ArithRef::__rpow__(), BitVecRef::__rrshift__(), BitVecRef::__rshift__(), ArithRef::__rsub__(), BitVecRef::__rsub__(), BitVecRef::__rxor__(), ArithRef::__sub__(), BitVecRef::__sub__(), BitVecRef::__xor__(), DatatypeSortRef::accessor(), Tactic::apply(), AlgebraicNumRef::approx(), ExprRef::arg(), QuantifierRef::body(), BoolSortRef::cast(), DatatypeSortRef::constructor(), ExprRef::decl(), RatNumRef::denominator(), FuncDeclRef::domain(), ArraySortRef::domain(), SortRef::kind(), ArrayRef::mk_default(), SortRef::name(), FuncDeclRef::name(), QuantifierRef::no_pattern(), RatNumRef::numerator(), Tactic::param_descrs(), QuantifierRef::pattern(), FuncDeclRef::range(), ArraySortRef::range(), DatatypeSortRef::recognizer(), Tactic::solver(), ExprRef::sort(), BoolRef::sort(), QuantifierRef::sort(), ArithRef::sort(), BitVecRef::sort(), ArrayRef::sort(), DatatypeRef::sort(), QuantifierRef::var_name(), and QuantifierRef::var_sort().
Definition at line 6661 of file z3py.py.
Referenced by Tactic.__del__(), Tactic.apply(), Tactic.help(), Tactic.param_descrs(), and Tactic.solver().
1.7.6.1