def solve(self, assumptions=None):
if assumptions is not None:
bool_ass = []
other_ass = []
for x in assumptions:
if x.is_literal():
bool_ass.append(self.converter.convert(x))
else:
other_ass.append(x)
if len(other_ass) > 0:
self.push()
self.add_assertion(self.mgr.And(other_ass))
self.pending_pop = True
res = self.z3.check(*bool_ass)
else:
res = self.z3.check()
sres = str(res)
assert sres in ['unknown', 'sat', 'unsat']
if sres == 'unknown':
raise SolverReturnedUnknownResultError()
return sres == 'sat'
def _solve(self, assumptions=None):
if assumptions is None:
assumptions = ()
bool_ass = []
other_ass = []
for x in assumptions:
if x.is_literal():
bool_ass.append(self.converter.convert(x))
else:
other_ass.append(x)
if other_ass:
self.push()
self.add_assertion(self.mgr.And(other_ass))
self.pending_pop = True
if bool_ass:
res = self.solver.check_sat_assuming(bool_ass)
else:
res = self.solver.check_sat()
if res.is_sat():
return True
elif res.is_unsat():
return False
else:
raise SolverReturnedUnknownResultError()
def solve(self, assumptions=None):
res = None
if assumptions is not None:
bool_ass = []
other_ass = []
for x in assumptions:
if x.is_literal():
bool_ass.append(self.converter.convert(x))
else:
other_ass.append(x)
if len(other_ass) > 0:
self.push()
self.add_assertion(self.mgr.And(other_ass))
self.pending_pop = True
if len(bool_ass) > 0:
res = mathsat.msat_solve_with_assumptions(self.msat_env, bool_ass)
else:
res = mathsat.msat_solve(self.msat_env)
else:
res = mathsat.msat_solve(self.msat_env)
assert res in [mathsat.MSAT_UNKNOWN,mathsat.MSAT_SAT,mathsat.MSAT_UNSAT]
if res == mathsat.MSAT_UNKNOWN:
raise SolverReturnedUnknownResultError()
return res == mathsat.MSAT_SAT
def walk_symbol(self, formula, **kwargs):
symbol_type = formula.symbol_type()
if symbol_type.is_bool_type():
res = self._btor.Var(self._btor.BitVecSort(1),
formula.symbol_name())
elif symbol_type.is_real_type():
raise ConvertExpressionError
elif symbol_type.is_int_type():
raise ConvertExpressionError
elif symbol_type.is_array_type():
# BTOR supports only Arrays of Type (BV, BV)
index_type = symbol_type.index_type
elem_type = symbol_type.elem_type
if not (index_type.is_bv_type() and elem_type.is_bv_type()):
raise ConvertExpressionError("BTOR supports only Array(BV,BV). "\
"Type '%s' was given." % str(symbol_type))
res = self._btor.Array(
self._btor.ArraySort(self._btor.BitVecSort(index_type.width),
self._btor.BitVecSort(elem_type.width)),
formula.symbol_name())
elif symbol_type.is_bv_type():
res = self._btor.Var(self._btor.BitVecSort(formula.bv_width()),
formula.symbol_name())
else:
raise SolverReturnedUnknownResultError("Unknown type for BTOR")
self.declared_vars[formula] = res
return res
def solve(self, assumptions=None):
if assumptions is not None:
conj_assumptions = self.environment.formula_manager.And(
assumptions)
cvc4_assumption = self.converter.convert(conj_assumptions)
res = self.cvc4.checkSat(cvc4_assumption)
else:
res = self.cvc4.checkSat()
# Convert returned type
res_type = res.isSat()
if res_type == CVC4.Result.SAT_UNKNOWN:
raise SolverReturnedUnknownResultError()
else:
return res_type == CVC4.Result.SAT
return
def _solve(self, assumptions=None):
count = 0
if assumptions is not None:
bool_ass = []
other_ass = []
assert(len(self.yices_assumptions) == 0)
for x in assumptions:
if x.is_literal():
self.yices_assumptions.append(self.get_term(x))
count += 1
else:
other_ass.append(x)
if len(other_ass) > 0:
self.push()
self.add_assertion(self.mgr.And(other_ass))
self.pending_pop = True
if len(self.yices_assumptions) == 0:
out = yicespy.yices_check_context(self.yices, self.yices_params)
else:
out = yicespy.yices_check_context_with_assumptions(self.yices, self.yices_params,
len(self.yices_assumptions),
yicespy.make_term_array(self.yices_assumptions))
if self.model is not None:
yicespy.yices_free_model(self.model)
self.model = None
if count != 0:
for i in range(count):
self.yices_assumptions.pop()
sres = 'unknown'
assert out in [STATUS_SAT, STATUS_UNSAT, STATUS_UNKNOWN]
if out == STATUS_UNKNOWN:
raise SolverReturnedUnknownResultError()
elif out == STATUS_SAT:
sres = 'sat'
self.model = yicespy.yices_get_model(self.yices, 1)
else:
sres = 'unsat'
return (sres == 'sat')
def solve(self, assumptions=None):
if assumptions is not None:
self.push()
self.add_assertion(self.mgr.And(assumptions))
self.pending_pop = True
out = yicespy.yices_check_context(self.yices, self.yices_params)
if self.model is not None:
yicespy.yices_free_model(self.model)
self.model = None
assert out in [STATUS_SAT, STATUS_UNSAT, STATUS_UNKNOWN]
if out == STATUS_UNKNOWN:
raise SolverReturnedUnknownResultError()
elif out == STATUS_SAT:
self.model = yicespy.yices_get_model(self.yices, 1)
return True
else:
return False