An ApplyResult object contains the subgoals produced by a tactic when applied to a goal. It also contains model and proof converters.
Definition at line 6341 of file z3py.py.
def __getitem__ |
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idx |
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Return one of the subgoals stored in ApplyResult object `self`.
>>> a, b = Ints('a b')
>>> g = Goal()
>>> g.add(Or(a == 0, a == 1), Or(b == 0, b == 1), a > b)
>>> t = Tactic('split-clause')
>>> r = t(g)
>>> r[0]
[a == 0, Or(b == 0, b == 1), a > b]
>>> r[1]
[a == 1, Or(b == 0, b == 1), a > b]
Definition at line 6371 of file z3py.py.
6372 """Return one of the subgoals stored in ApplyResult object `self`.
6374 >>> a, b = Ints('a b')
6376 >>> g.add(Or(a == 0, a == 1), Or(b == 0, b == 1), a > b)
6377 >>> t = Tactic('split-clause')
6380 [a == 0, Or(b == 0, b == 1), a > b]
6382 [a == 1, Or(b == 0, b == 1), a > b]
6384 if idx >= len(self):
def __getitem__(self, idx)
Z3_goal Z3_API Z3_apply_result_get_subgoal(__in Z3_context c, __in Z3_apply_result r, __in unsigned i)
Return one of the subgoals in the Z3_apply_result object returned by Z3_tactic_apply.
Return the number of subgoals in `self`.
>>> a, b = Ints('a b')
>>> g = Goal()
>>> g.add(Or(a == 0, a == 1), Or(b == 0, b == 1), a > b)
>>> t = Tactic('split-clause')
>>> r = t(g)
>>> len(r)
2
>>> t = Then(Tactic('split-clause'), Tactic('split-clause'))
>>> len(t(g))
4
>>> t = Then(Tactic('split-clause'), Tactic('split-clause'), Tactic('propagate-values'))
>>> len(t(g))
1
Definition at line 6352 of file z3py.py.
6353 """Return the number of subgoals in `self`.
6355 >>> a, b = Ints('a b')
6357 >>> g.add(Or(a == 0, a == 1), Or(b == 0, b == 1), a > b)
6358 >>> t = Tactic('split-clause')
6362 >>> t = Then(Tactic('split-clause'), Tactic('split-clause'))
6365 >>> t = Then(Tactic('split-clause'), Tactic('split-clause'), Tactic('propagate-values'))
unsigned Z3_API Z3_apply_result_get_num_subgoals(__in Z3_context c, __in Z3_apply_result r)
Return the number of subgoals in the Z3_apply_result object returned by Z3_tactic_apply.
Return a Z3 expression consisting of all subgoals.
>>> x = Int('x')
>>> g = Goal()
>>> g.add(x > 1)
>>> g.add(Or(x == 2, x == 3))
>>> r = Tactic('simplify')(g)
>>> r
[[Not(x <= 1), Or(x == 2, x == 3)]]
>>> r.as_expr()
And(Not(x <= 1), Or(x == 2, x == 3))
>>> r = Tactic('split-clause')(g)
>>> r
[[x > 1, x == 2], [x > 1, x == 3]]
>>> r.as_expr()
Or(And(x > 1, x == 2), And(x > 1, x == 3))
Definition at line 6426 of file z3py.py.
6427 """Return a Z3 expression consisting of all subgoals.
6432 >>> g.add(Or(x == 2, x == 3))
6433 >>> r = Tactic('simplify')(g)
6435 [[Not(x <= 1), Or(x == 2, x == 3)]]
6437 And(Not(x <= 1), Or(x == 2, x == 3))
6438 >>> r = Tactic('split-clause')(g)
6440 [[x > 1, x == 2], [x > 1, x == 3]]
6442 Or(And(x > 1, x == 2), And(x > 1, x == 3))
6450 return Or([ self[i].
as_expr()
for i
in range(len(self)) ])
def convert_model |
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Convert a model for a subgoal into a model for the original goal.
>>> a, b = Ints('a b')
>>> g = Goal()
>>> g.add(Or(a == 0, a == 1), Or(b == 0, b == 1), a > b)
>>> t = Then(Tactic('split-clause'), Tactic('solve-eqs'))
>>> r = t(g)
>>> r[0]
[Or(b == 0, b == 1), Not(0 <= b)]
>>> r[1]
[Or(b == 0, b == 1), Not(1 <= b)]
>>> # Remark: the subgoal r[0] is unsatisfiable
>>> # Creating a solver for solving the second subgoal
>>> s = Solver()
>>> s.add(r[1])
>>> s.check()
sat
>>> s.model()
[b = 0]
>>> # Model s.model() does not assign a value to `a`
>>> # It is a model for subgoal `r[1]`, but not for goal `g`
>>> # The method convert_model creates a model for `g` from a model for `r[1]`.
>>> r.convert_model(s.model(), 1)
[b = 0, a = 1]
Definition at line 6395 of file z3py.py.
6396 """Convert a model for a subgoal into a model for the original goal.
6398 >>> a, b = Ints('a b')
6400 >>> g.add(Or(a == 0, a == 1), Or(b == 0, b == 1), a > b)
6401 >>> t = Then(Tactic('split-clause'), Tactic('solve-eqs'))
6404 [Or(b == 0, b == 1), Not(0 <= b)]
6406 [Or(b == 0, b == 1), Not(1 <= b)]
6407 >>> # Remark: the subgoal r[0] is unsatisfiable
6408 >>> # Creating a solver for solving the second subgoal
6415 >>> # Model s.model() does not assign a value to `a`
6416 >>> # It is a model for subgoal `r[1]`, but not for goal `g`
6417 >>> # The method convert_model creates a model for `g` from a model for `r[1]`.
6418 >>> r.convert_model(s.model(), 1)
6422 _z3_assert(idx < len(self),
"index out of bounds")
6423 _z3_assert(isinstance(model, ModelRef),
"Z3 Model expected")
Z3_model Z3_API Z3_apply_result_convert_model(__in Z3_context c, __in Z3_apply_result r, __in unsigned i, __in Z3_model m)
Convert a model for the subgoal Z3_apply_result_get_subgoal(c, r, i) into a model for the original go...