Public Member Functions | |
__init__ (self, m, ctx) | |
__del__ (self) | |
__repr__ (self) | |
sexpr (self) | |
eval (self, t, model_completion=False) | |
evaluate (self, t, model_completion=False) | |
__len__ (self) | |
get_interp (self, decl) | |
num_sorts (self) | |
get_sort (self, idx) | |
sorts (self) | |
get_universe (self, s) | |
__getitem__ (self, idx) | |
decls (self) | |
update_value (self, x, value) | |
translate (self, target) | |
project (self, vars, fml) | |
project_with_witness (self, vars, fml) | |
__copy__ (self) | |
__deepcopy__ (self, memo={}) | |
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use_pp (self) | |
Data Fields | |
model = m | |
ctx = ctx | |
Additional Inherited Members | |
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_repr_html_ (self) | |
Model/Solution of a satisfiability problem (aka system of constraints).
__init__ | ( | self, | |
m, | |||
ctx ) |
Definition at line 6451 of file z3py.py.
__del__ | ( | self | ) |
Definition at line 6457 of file z3py.py.
__copy__ | ( | self | ) |
__deepcopy__ | ( | self, | |
memo = {} ) |
__getitem__ | ( | self, | |
idx ) |
If `idx` is an integer, then the declaration at position `idx` in the model `self` is returned. If `idx` is a declaration, then the actual interpretation is returned. The elements can be retrieved using position or the actual declaration. >>> f = Function('f', IntSort(), IntSort()) >>> x = Int('x') >>> s = Solver() >>> s.add(x > 0, x < 2, f(x) == 0) >>> s.check() sat >>> m = s.model() >>> len(m) 2 >>> m[0] x >>> m[1] f >>> m[x] 1 >>> m[f] [else -> 0] >>> for d in m: print("%s -> %s" % (d, m[d])) x -> 1 f -> [else -> 0]
Definition at line 6669 of file z3py.py.
__len__ | ( | self | ) |
Return the number of constant and function declarations in the model `self`. >>> f = Function('f', IntSort(), IntSort()) >>> x = Int('x') >>> s = Solver() >>> s.add(x > 0, f(x) != x) >>> s.check() sat >>> m = s.model() >>> len(m) 2
Definition at line 6525 of file z3py.py.
__repr__ | ( | self | ) |
decls | ( | self | ) |
Return a list with all symbols that have an interpretation in the model `self`. >>> f = Function('f', IntSort(), IntSort()) >>> x = Int('x') >>> s = Solver() >>> s.add(x > 0, x < 2, f(x) == 0) >>> s.check() sat >>> m = s.model() >>> m.decls() [x, f]
Definition at line 6714 of file z3py.py.
eval | ( | self, | |
t, | |||
model_completion = False ) |
Evaluate the expression `t` in the model `self`. If `model_completion` is enabled, then a default interpretation is automatically added for symbols that do not have an interpretation in the model `self`. >>> x = Int('x') >>> s = Solver() >>> s.add(x > 0, x < 2) >>> s.check() sat >>> m = s.model() >>> m.eval(x + 1) 2 >>> m.eval(x == 1) True >>> y = Int('y') >>> m.eval(y + x) 1 + y >>> m.eval(y) y >>> m.eval(y, model_completion=True) 0 >>> # Now, m contains an interpretation for y >>> m.eval(y + x) 1
Definition at line 6468 of file z3py.py.
Referenced by evaluate().
evaluate | ( | self, | |
t, | |||
model_completion = False ) |
Alias for `eval`. >>> x = Int('x') >>> s = Solver() >>> s.add(x > 0, x < 2) >>> s.check() sat >>> m = s.model() >>> m.evaluate(x + 1) 2 >>> m.evaluate(x == 1) True >>> y = Int('y') >>> m.evaluate(y + x) 1 + y >>> m.evaluate(y) y >>> m.evaluate(y, model_completion=True) 0 >>> # Now, m contains an interpretation for y >>> m.evaluate(y + x) 1
Definition at line 6499 of file z3py.py.
get_interp | ( | self, | |
decl ) |
Return the interpretation for a given declaration or constant. >>> f = Function('f', IntSort(), IntSort()) >>> x = Int('x') >>> s = Solver() >>> s.add(x > 0, x < 2, f(x) == 0) >>> s.check() sat >>> m = s.model() >>> m[x] 1 >>> m[f] [else -> 0]
Definition at line 6542 of file z3py.py.
Referenced by __getitem__(), and get_interp().
get_sort | ( | self, | |
idx ) |
Return the uninterpreted sort at position `idx` < self.num_sorts(). >>> A = DeclareSort('A') >>> B = DeclareSort('B') >>> a1, a2 = Consts('a1 a2', A) >>> b1, b2 = Consts('b1 b2', B) >>> s = Solver() >>> s.add(a1 != a2, b1 != b2) >>> s.check() sat >>> m = s.model() >>> m.num_sorts() 2 >>> m.get_sort(0) A >>> m.get_sort(1) B
Definition at line 6609 of file z3py.py.
Referenced by sorts().
get_universe | ( | self, | |
s ) |
Return the interpretation for the uninterpreted sort `s` in the model `self`. >>> A = DeclareSort('A') >>> a, b = Consts('a b', A) >>> s = Solver() >>> s.add(a != b) >>> s.check() sat >>> m = s.model() >>> m.get_universe(A) [A!val!1, A!val!0]
Definition at line 6649 of file z3py.py.
Referenced by __getitem__().
num_sorts | ( | self | ) |
Return the number of uninterpreted sorts that contain an interpretation in the model `self`. >>> A = DeclareSort('A') >>> a, b = Consts('a b', A) >>> s = Solver() >>> s.add(a != b) >>> s.check() sat >>> m = s.model() >>> m.num_sorts() 1
Definition at line 6594 of file z3py.py.
Referenced by get_sort(), and sorts().
project | ( | self, | |
vars, | |||
fml ) |
Perform model-based projection on fml with respect to vars. Assume that the model satisfies fml. Then compute a projection fml_p, such that vars do not occur free in fml_p, fml_p is true in the model and fml_p => exists vars . fml
Definition at line 6763 of file z3py.py.
project_with_witness | ( | self, | |
vars, | |||
fml ) |
Perform model-based projection, but also include realizer terms for the projected variables
Definition at line 6775 of file z3py.py.
sexpr | ( | self | ) |
Return a textual representation of the s-expression representing the model.
Definition at line 6464 of file z3py.py.
sorts | ( | self | ) |
Return all uninterpreted sorts that have an interpretation in the model `self`. >>> A = DeclareSort('A') >>> B = DeclareSort('B') >>> a1, a2 = Consts('a1 a2', A) >>> b1, b2 = Consts('b1 b2', B) >>> s = Solver() >>> s.add(a1 != a2, b1 != b2) >>> s.check() sat >>> m = s.model() >>> m.sorts() [A, B]
Definition at line 6632 of file z3py.py.
translate | ( | self, | |
target ) |
Translate `self` to the context `target`. That is, return a copy of `self` in the context `target`.
Definition at line 6755 of file z3py.py.
Referenced by __copy__(), and __deepcopy__().
update_value | ( | self, | |
x, | |||
value ) |
Update the interpretation of a constant
Definition at line 6733 of file z3py.py.
ctx = ctx |
Definition at line 6454 of file z3py.py.
Referenced by __copy__(), __deepcopy__(), Statistics.__deepcopy__(), __del__(), Solver.__del__(), Statistics.__del__(), __getitem__(), Statistics.__getitem__(), __len__(), Statistics.__len__(), Statistics.__repr__(), Solver.assert_and_track(), Solver.assert_exprs(), Solver.check(), decls(), eval(), get_interp(), Statistics.get_key_value(), get_sort(), get_universe(), Statistics.keys(), Solver.model(), Solver.num_scopes(), num_sorts(), Solver.pop(), project(), project_with_witness(), Solver.push(), Solver.reset(), Solver.set(), sexpr(), and translate().
model = m |
Definition at line 6453 of file z3py.py.
Referenced by __del__(), __getitem__(), __len__(), decls(), eval(), get_interp(), get_sort(), get_universe(), num_sorts(), project(), project_with_witness(), sexpr(), translate(), and update_value().