void make_next_state(exprt &expr) { Forall_operands(it, expr) make_next_state(*it); if(expr.id()=="symbol") expr.id("next_symbol"); }
void make_next_state(exprt &expr) { Forall_operands(it, expr) make_next_state(*it); if(expr.id()==ID_symbol) expr.id(ID_next_symbol); }