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add documentation on the cuber

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2018-09-22 19:19:05 -07:00
parent 2d46234fd0
commit 9a09689dfa
3 changed files with 37 additions and 4 deletions
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11
src/api/python/z3/z3.py
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@ -6605,7 +6605,12 @@ class Solver(Z3PPObject):
_handle_parse_error(e, self.ctx)
def cube(self, vars = None):
"""Get set of cubes"""
"""Get set of cubes
The method takes an optional set of variables that restrict which
variables may be used as a starting point for cubing.
If vars is not None, then the first case split is based on a variable in
this set.
"""
self.cube_vs = AstVector(None, self.ctx)
if vars is not None:
for v in vars:
@ -6621,6 +6626,10 @@ class Solver(Z3PPObject):
return
def cube_vars(self):
"""Access the set of variables that were touched by the most recently generated cube.
This set of variables can be used as a starting point for additional cubes.
The idea is that variables that appear in clauses that are reduced by the most recent
cube are likely more useful to cube on."""
return self.cube_vs
def proof(self):