def _handle_sub(self, state):
op0, op1 = self._get_args(state)
c = Not(BVSubNoUnderflow(op0, op1, False))
# Check satisfiable
model = self._try_constraints(state.mstate.constraints, [c])
if model is None:
return
annotation = OverUnderflowAnnotation(state, "subtraction", c)
op0.annotate(annotation)
def _handle_add(self, state):
stack = state.mstate.stack
op0, op1 = (
self._make_bitvec_if_not(stack, -1),
self._make_bitvec_if_not(stack, -2),
)
c = Not(BVAddNoOverflow(op0, op1, False))
# Check satisfiable
model = self._try_constraints(state.node.constraints, [c])
if model is None:
return
annotation = OverUnderflowAnnotation(state, "addition", c)
op0.annotate(annotation)
def _handle_mul(self, state):
op0, op1 = self._get_args(state)
c = Not(BVMulNoOverflow(op0, op1, False))
annotation = OverUnderflowAnnotation(state, "multiplication", c)
op0.annotate(annotation)
def _handle_sub(self, state):
op0, op1 = self._get_args(state)
c = Not(BVSubNoUnderflow(op0, op1, False))
annotation = OverUnderflowAnnotation(state, "subtraction", c)
op0.annotate(annotation)
def _handle_add(self, state):
op0, op1 = self._get_args(state)
c = Not(BVAddNoOverflow(op0, op1, False))
annotation = OverUnderflowAnnotation(state, "addition", c)
op0.annotate(annotation)