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#include <assert.h>
#include <stdlib.h>
#ifdef _WIN32
void *alloca(size_t alloca_size);
#endif
int main()
{
__CPROVER_field_decl_local("field1", (char)0);
__CPROVER_field_decl_local("field2", (__CPROVER_bitvector[6])0);
__CPROVER_field_decl_global("field1", (char)0);
__CPROVER_field_decl_global("field2", (__CPROVER_bitvector[6])0);
/***********************
* Variable-size arrays
***********************/
int n;
__CPROVER_assume(5 <= n && n < 10);
int A[n];
int *z = &(A[4]);
assert(__CPROVER_get_field(z, "field1") == 0);
assert(__CPROVER_get_field(z, "field2") == 0);
__CPROVER_set_field(&(A[3]), "field1", 13);
__CPROVER_set_field(&(A[3]), "field2", 14);
__CPROVER_set_field(z, "field1", 15);
__CPROVER_set_field(z, "field2", 16);
z = A;
assert(__CPROVER_get_field(z + 3, "field1") == 13);
assert(__CPROVER_get_field(z + 3, "field2") == 14);
assert(__CPROVER_get_field(z + 4, "field1") == 15);
assert(__CPROVER_get_field(z + 4, "field2") == 16);
int i;
__CPROVER_assume(0 <= i && i < n);
__CPROVER_set_field(&(A[i]), "field1", 42);
assert(__CPROVER_get_field(&(A[i]), "field1") == 42);
z = &(A[i]);
__CPROVER_set_field(z, "field1", 43);
assert(__CPROVER_get_field(z, "field1") == 43);
/***********************
* Variable-size arrays with malloc
***********************/
int *B = malloc(n * sizeof(int));
z = &(B[4]);
assert(__CPROVER_get_field(z, "field1") == 0);
assert(__CPROVER_get_field(z, "field2") == 0);
__CPROVER_set_field(&(B[3]), "field1", 13);
__CPROVER_set_field(&(B[3]), "field2", 14);
__CPROVER_set_field(z, "field1", 15);
__CPROVER_set_field(z, "field2", 16);
z = B;
assert(__CPROVER_get_field(z + 3, "field1") == 13);
assert(__CPROVER_get_field(z + 3, "field2") == 14);
assert(__CPROVER_get_field(z + 4, "field1") == 15);
assert(__CPROVER_get_field(z + 4, "field2") == 16);
int j;
__CPROVER_assume(0 <= j && j < n);
__CPROVER_set_field(&(B[j]), "field1", 42);
assert(__CPROVER_get_field(&(B[j]), "field1") == 42);
z = &(B[j]);
__CPROVER_set_field(z, "field1", 43);
assert(__CPROVER_get_field(z, "field1") == 43);
/***********************
* Variable-size arrays with alloca
***********************/
int *C = alloca(n * sizeof(int));
z = &(C[4]);
assert(__CPROVER_get_field(z, "field1") == 0);
assert(__CPROVER_get_field(z, "field2") == 0);
__CPROVER_set_field(&(C[3]), "field1", 13);
__CPROVER_set_field(&(C[3]), "field2", 14);
__CPROVER_set_field(z, "field1", 15);
__CPROVER_set_field(z, "field2", 16);
z = C;
assert(__CPROVER_get_field(z + 3, "field1") == 13);
assert(__CPROVER_get_field(z + 3, "field2") == 14);
assert(__CPROVER_get_field(z + 4, "field1") == 15);
assert(__CPROVER_get_field(z + 4, "field2") == 16);
int l;
__CPROVER_assume(0 <= l && l < n);
__CPROVER_set_field(&(C[l]), "field1", 42);
assert(__CPROVER_get_field(&(C[l]), "field1") == 42);
z = &(C[l]);
__CPROVER_set_field(z, "field1", 43);
assert(__CPROVER_get_field(z, "field1") == 43);
}
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