def __init__(self, module):
Common.reset() #resets variables if in test mode
self.EMPTYSTRING = SMTLib.SMT_Int("EMPTYSTRING")
self.module = module
self.smt_bracketed_constraints = []
self.cfr_sorts = {}
self.solver = BaseSolver.getSolver()
self.setOptions()
self.clock = Clock.Clock()
self.objectives = []
self.delimeter_count = 0
""" Create simple objects used to store Z3 constraints. """
self.join_constraints = Constraints.GenericConstraints("ClaferModel")
"""
Used to map constraints in the UNSAT core to Boolean variables.
"""
self.unsat_core_trackers = []
self.low_level_unsat_core_trackers = {}
self.unsat_map = {}
self.join_cache = {} # cache to store join expression (asil optimization)
self.translate()
def op_indexof(left, right):
(_, mask) = left.getInstanceSort(0)
left_i = mask.get(0)
(_, mask) = right.getInstanceSort(0)
right_i = mask.get(0)
return IntArg([SMTLib.SMT_Int("Indexof$" + left_i + "$" + right_i)])
def op_length(arg):
(_, mask) = arg.getInstanceSort(0)
arg_i = mask.get(0)
stringID = Common.STRCONS_SUB + str(Common.getStringUID())
Common.string_map[stringID] = arg_i
return IntArg([SMTLib.SMT_Int("Length$" + str(stringID))])
