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enable non-expression bodies of quantifiers to fix #1667

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2018-06-07 22:03:03 -07:00
parent 88ead235f0
commit 4547f2c001
2 changed files with 7 additions and 12 deletions
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10
src/api/python/z3/z3.py
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@ -1898,13 +1898,17 @@ def is_quantifier(a):
def _mk_quantifier(is_forall, vs, body, weight=1, qid="", skid="", patterns=[], no_patterns=[]):
if __debug__:
_z3_assert(is_bool(body), "Z3 expression expected")
_z3_assert(is_bool(body) or is_app(vs) or (len(vs) > 0 and is_app(vs[0])), "Z3 expression expected")
_z3_assert(is_const(vs) or (len(vs) > 0 and all([ is_const(v) for v in vs])), "Invalid bounded variable(s)")
_z3_assert(all([is_pattern(a) or is_expr(a) for a in patterns]), "Z3 patterns expected")
_z3_assert(all([is_expr(p) for p in no_patterns]), "no patterns are Z3 expressions")
ctx = body.ctx
_z3_assert(all([is_expr(p) for p in no_patterns]), "no patterns are Z3 expressions")
if is_app(vs):
ctx = vs.ctx
vs = [vs]
else:
ctx = vs[0].ctx
if not is_expr(body):
body = BoolVal(body, ctx)
num_vars = len(vs)
if num_vars == 0:
return body