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fix explain map to use negations

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2016-06-27 15:22:13 -07:00
parent f786ab15fb
commit 014c693fa5
1 changed files with 4 additions and 4 deletions
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8
examples/python/mus/mss.py
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@ -104,8 +104,8 @@ class MSSSolver:
def resolve_core(self, core):
new_core = set([])
for x in core:
if x in self.mcs_map:
new_core |= self.mcs_map[x]
if x in self.mcs_explain:
new_core |= self.mcs_explain[x]
else:
new_core.add(x)
return new_core
@ -115,7 +115,7 @@ class MSSSolver:
self.mss = []
self.mcs = []
self.nmcs = []
self.mcs_map = {}
self.mcs_explain = {}
self.unknown = self.soft_vars
self.update_unknown()
cores = []
@ -128,7 +128,7 @@ class MSSSolver:
elif is_sat == unsat:
core = self.s.unsat_core()
core = self.resolve_core(core)
self.mcs_map[x] = {y for y in core if not eq(x,y)}
self.mcs_explain[Not(x)] = {y for y in core if not eq(x,y)}
self.mcs.append(x)
self.nmcs.append(Not(x))
cores += [core]