/**************************************************************************/
/*                                                                        */
/*  The Why platform for program certification                            */
/*                                                                        */
/*  Copyright (C) 2002-2014                                               */
/*                                                                        */
/*    Jean-Christophe FILLIATRE, CNRS & Univ. Paris-sud                   */
/*    Claude MARCHE, INRIA & Univ. Paris-sud                              */
/*    Yannick MOY, Univ. Paris-sud                                        */
/*    Romain BARDOU, Univ. Paris-sud                                      */
/*                                                                        */
/*  Secondary contributors:                                               */
/*                                                                        */
/*    Thierry HUBERT, Univ. Paris-sud  (former Caduceus front-end)        */
/*    Nicolas ROUSSET, Univ. Paris-sud (on Jessie & Krakatoa)             */
/*    Ali AYAD, CNRS & CEA Saclay      (floating-point support)           */
/*    Sylvie BOLDO, INRIA              (floating-point support)           */
/*    Jean-Francois COUCHOT, INRIA     (sort encodings, hyps pruning)     */
/*    Mehdi DOGGUY, Univ. Paris-sud    (Why GUI)                          */
/*                                                                        */
/*  This software is free software; you can redistribute it and/or        */
/*  modify it under the terms of the GNU Lesser General Public            */
/*  License version 2.1, with the special exception on linking            */
/*  described in file LICENSE.                                            */
/*                                                                        */
/*  This software is distributed in the hope that it will be useful,      */
/*  but WITHOUT ANY WARRANTY; without even the implied warranty of        */
/*  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.                  */
/*                                                                        */
/**************************************************************************/

typedef struct A { unsigned char v; } A ;

typedef struct S { A a; A *b; A c[3]; struct S *s; unsigned char i; } S;


/* @ predicate is_unsigned_char(int x) { 0 <= x <= 255 } */

/* @ predicate is_struct_A(A x) reads x.v */

/* @ axiom is_struct_A_def : 
  \forall A x ; is_struct_A(x) <=> is_unsigned_char(x.v) 
 */

/* @ predicate is_struct_S(S x) reads x.a,x.b,x.c,x.i */

/* @ axiom is_struct_S_def : 
  \forall S x ; is_struct_S(x) <=> 
       ( is_struct_A(x.a) 
       && (\forall int i; \valid(x.b+i) => is_struct_A( *(x.b+i)))
       && \valid_range(x.c,0,3) 
       && (\forall int i; 0<=i<=3 => is_struct_A(x.c[i]))
       && (\forall int i; \valid(x.s+i) => is_struct_S( *(x.s+i)))
       && is_unsigned_char(x.i))
       
 */

struct S aaa;

/*@ requires \valid(x.s) */
int f(struct S x) {
  x.s->a.v = 0;
  aaa.i = 'a';
  return x.c[1].v;
}
