def myeval(self, expr, pred=None):
assert Miscs.is_expr(expr), expr
if pred is None:
return [trace.myeval(expr) for trace in self]
else:
return any(pred(trace.myeval(expr)) for trace in self)
def _infer(self, loc, template, uks, exprs, dtraces, inps):
assert isinstance(loc, str) and loc, loc
assert Miscs.is_expr(template), template
assert isinstance(uks, list), uks
assert isinstance(exprs, set) and exprs, exprs
assert isinstance(dtraces, DTraces) and dtraces, dtraces
assert isinstance(inps, Inps) and inps, inps
cache = set()
eqts = set() # results
exprs = list(exprs)
new_cexs = []
curIter = 0
while True:
curIter += 1
mlog.debug("{}, iter {} infer using {} exprs".format(
loc, curIter, len(exprs)))
new_eqts = Miscs.solve_eqts(exprs, uks, template)
unchecks = [eqt for eqt in new_eqts if eqt not in cache]
if not unchecks:
mlog.debug("{}: no new results -- break".format(loc))
break
mlog.debug('{}: {} candidates:\n{}'.format(
loc, len(new_eqts), '\n'.join(map(str, new_eqts))))
mlog.debug("{}: check {} unchecked ({} candidates)".format(
loc, len(unchecks), len(new_eqts)))
dinvs = DInvs.mk(loc, Invs(list(map(data.inv.eqt.Eqt, unchecks))))
cexs, dinvs = self.check(dinvs, None)
if cexs:
new_cexs.append(cexs)
[eqts.add(inv) for inv in dinvs[loc] if not inv.is_disproved]
[cache.add(inv.inv) for inv in dinvs[loc] if inv.stat is not None]
if loc not in cexs:
mlog.debug("{}: no disproved candidates -- break".format(loc))
break
cexs = Traces.extract(cexs[loc])
cexs = cexs.padzeros(set(self.inv_decls[loc].names))
exprs_ = cexs.instantiate(template, None)
mlog.debug("{}: {} new cex exprs".format(loc, len(exprs_)))
exprs.extend(exprs_)
return eqts, new_cexs
def get_postconds(cls, eqt):
assert Miscs.is_expr(eqt), eqt
assert eqt.operator() == operator.eq, eqt
# tCtr
symbols = [
s for s in Miscs.get_vars(eqt) if settings.CTR_VAR in str(s)
]
if not symbols:
return
assert len(symbols) == 1, \
"should only have 1 tCtr symbol: {}, {}".format(
symbols, settings.CTR_VAR)
postconds = sage.all.solve(eqt, symbols[0])
return postconds if len(postconds) >= 1 else None
def instantiate(self, term, ntraces):
assert Miscs.is_expr(term), term
assert ntraces is None or ntraces >= 1, ntraces
if ntraces is None:
for t in self.mydicts:
exprs = set(term.subs(t) for t in self.mydicts)
else:
ntracesExtra = ntraces * settings.TRACE_MULTIPLIER
exprs = set()
for t in self.mydicts:
expr = term.subs(t)
if expr not in exprs:
exprs.add(expr)
if len(exprs) >= ntracesExtra:
break
# instead of doing this, can find out the # 0's in traces
# the more 0's , the better
exprs = sorted(exprs, key=lambda expr: len(Miscs.get_vars(expr)))
exprs = set(exprs[:ntraces])
return exprs
def __init__(self, poly):
assert Miscs.is_expr(poly), poly
super().__init__(poly)
def myeval(self, expr):
assert Miscs.is_expr(expr), expr
rs = expr.subs(self.mydict)
return rs
