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/* run.config
OPT: -check -deps -lib-entry -main f1 -slice-pragma f1 -journal-disable -then-on 'Slicing export' -print
OPT: -check -deps -lib-entry -main f1 -slice-assert f1 -journal-disable -then-on 'Slicing export' -print
OPT: -check -deps -lib-entry -main f2 -slice-pragma f2 -journal-disable -then-on 'Slicing export' -print
OPT: -check -deps -lib-entry -main f2 -slice-assert f2 -journal-disable -then-on 'Slicing export' -print
OPT: -check -deps -main test_infinite_loop_3 -slice-value G -journal-disable -then-on 'Slicing export' -print
OPT: -check -deps -main test_infinite_loop_4 -slice-value G -journal-disable -then-on 'Slicing export' -print
OPT: -check -deps -main test_infinite_loop_5 -slice-value G -journal-disable -then-on 'Slicing export' -print
OPT: -check -deps -main loop -slice-value Z -journal-disable -then-on 'Slicing export' -print
OPT: -check -deps -slice-calls loop -journal-disable -then-on 'Slicing export' -print
OPT: -check -deps -slice-pragma loop -journal-disable -then-on 'Slicing export' -print
OPT: -check -deps -slice-assert loop -journal-disable -then-on 'Slicing export' -print
OPT: -check -deps -main loop -slice-rd Y -journal-disable -then-on 'Slicing export' -print
OPT: -check -deps -main loop -slice-rd Z -journal-disable -then-on 'Slicing export' -print
OPT: -check -deps -main loop -slice-wr Y -journal-disable -then-on 'Slicing export' -print
OPT: -check -deps -main loop -slice-wr Z -journal-disable -then-on 'Slicing export' -print
OPT: -check -deps -lib-entry -main stop_f1 -slice-pragma stop_f1 -journal-disable -then-on 'Slicing export' -print
OPT: -check -deps -lib-entry -main stop_f1 -slice-assert stop_f1 -journal-disable -then-on 'Slicing export' -print
OPT: -check -deps -lib-entry -main stop_f2 -slice-pragma stop_f2 -journal-disable -then-on 'Slicing export' -print
OPT: -check -deps -lib-entry -main stop_f2 -slice-assert stop_f2 -journal-disable -then-on 'Slicing export' -print
OPT: -check -deps -slice-value Z -journal-disable -then-on 'Slicing export' -print
OPT: -check -deps -slice-rd Y -journal-disable -then-on 'Slicing export' -print
OPT: -check -deps -slice-rd Z -journal-disable -then-on 'Slicing export' -print
OPT: -check -deps -slice-wr Y -journal-disable -then-on 'Slicing export' -print
OPT: -check -deps -slice-wr Z -journal-disable -then-on 'Slicing export' -print
OPT: -check -deps -lib-entry -main alarm -slice-threat alarm -journal-disable -then-on 'Slicing export' -print
*/
int f1 (int c) {
int x = 0, s = 0;
if (c) {
while(1) { /* infinite loop */
s++;
//@ assert s > 0 ;
}
//@ assert \false ;
}
else
x = 1;
//@ slice pragma stmt;
x ++;
return x;
}
void f2 (int c) {
int x1 = 0, x2 = 0;
while (1) {
if (c)
x1++;
else
x2++;
//@slice pragma expr x1;
//@ assert x2 > 0 ;
}
}
/*-------------------------------------------*/
void stop(void) __attribute__ ((noreturn)) ;
int stop_f1 (int c) {
int x = 0, s = 0;
if (c) {
while(s < c) {
s++;
//@ assert s > 0 ;
}
stop () ; /* never returns */
}
else
x = 1;
//@ slice pragma stmt;
x ++;
return x;
}
void stop_f2 (int c) {
int x1 = 0, x2 = 0;
while (x1+x2 < c + 10) {
if (c)
x1++;
else
x2++;
//@slice pragma expr x1;
//@ assert x2 > 0 ;
stop () ; /* never loops nor returns */
x1++; /* dead code */
//@ assert \false ;
}
}
/*-------------------------------------------*/
int G ;
void test_infinite_loop_3 (int ctrl1, int ctrl2,
int no_ctrl,
int data1, int data2,
int no_data) {
G = 0 ;
if (ctrl1) {
G = data1 ;
if (no_ctrl) { /* Don't control an assignment of G
* which leads to the return */
G = no_data ; /* Don't affect the final value of G
* because the assignement
* does not lead to the return */
while (1)
G = no_data ; /* Don't affect the final value of G
* because the assignement
* does not lead to the return */
G = no_data ; /* Don't affect the final value of G
* because the assignement
* is dead code */
}
if (ctrl2)
G = data2 ;
}
return;
}
void test_infinite_loop_4 (int ctrl1, int ctrl2, int no_ctrl,
int data1, int data2, int no_data) {
G = 0 ;
while (ctrl1) {
G += data1 ;
if (no_ctrl) { /* Don't control an assignment of G
* which leads to the return */
G += no_data ; /* Don't affect the final value of G
* because the assignement
* does not lead to the return */
while (1)
G += no_data ; /* Don't affect the final value of G
* because the assignement
* does not lead to the return */
G += no_data ; /* Don't affect the final value of G
* because the assignement
* is dead code */
}
if (ctrl2)
G += data2 ;
}
return;
}
void test_infinite_loop_5 (int ctrl1, int ctrl2, int no_ctrl,
int data1, int data2, int no_data) {
G = 0 ;
while (ctrl1) {
G += data1 ;
if (no_ctrl) { /* Don't control the final value of G.
* It only controls the terminaison of the function.
*/
G += no_data ; /* Don't affect ... */
while (1)
G += no_data ; /* Don't affect ... */
G += no_data ; /* Don't affect ... dead code */
}
else /* <-- This is the difference with test_infinite_loop_4.
* It is only a syntaxical difference,
* and not a semantical difference
* since the previous statement "G += no_data" is dead.
*/
if (ctrl2)
G += data2 ;
}
return;
}
/*-------------------------------------------*/
int C1 = 1, C2 = 1 ;
int X, Y, Z ;
void loop (int cond) {
if (cond) {
int c = 0 ;
/*@ loop pragma WIDEN_HINTS X, 10, 100 ; */ while (1) {
//@ slice pragma ctrl ;
if (c) {
X++;
Y = Z ;
}
c=1;
//@ assert c==1 ;
}
}
Z = Y ; // dead code with -main main
}
/*---------------------*/
/*@ assigns *p \from p, y, Z ;
*/
void may_write_Y_from_Z (int * p, int y) ;
void test_assigns (int * p, int y) { if (y < Z) *p = y + Z; }
/*---------------------*/
void main (int y) {
int no_ctrl = 1 ;
Z = 0;
if (no_ctrl)
Z = X ;
may_write_Y_from_Z (&Y, y) ;
if (C1) {
int cond = C2 ;
loop (cond) ;
}
}
/*-------------------------------------------*/
void alarm() {
int i = 1;
volatile int j = 3;
//@ assert i == 1;
j++;
}
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