C++ (Cpp) klee_close_merge Examples

Example #1

File: batching_break.c Project: ccadar/klee

int main(int argc, char** args){

  int x;
  int p;
  int i;

  klee_make_symbolic(&x, sizeof(x), "x");
  x = x % 20;

  klee_open_merge();
  for (i = 0; i < x; ++i){
    if (x % 3 == 0){
      klee_close_merge();
      if (x > 10){
        return 1;
      } else {
        return 2;
      }
    }
  }
  klee_close_merge();

  klee_open_merge();
  if (x > 10){
    p = 1;
  } else {
    p = 2;
  }
  klee_close_merge();
  return p;

}

Example #2

File: easy_merge.c Project: MartinNowack/klee

int main(int argc, char** args){

  int x;
  int a;
  int foo = 0;

  klee_make_symbolic(&x, sizeof(x), "x");
  klee_make_symbolic(&a, sizeof(a), "a");

  if (a == 0){
    klee_open_merge();

    if (x == 1) {
      foo = 5;
    } else if (x == 2) {
      foo = 6;
    } else {
      foo = 7;
    }

    klee_close_merge();
  }

  return foo;
}

Example #3

File: incomplete_merge.c Project: ccadar/klee

int main(int argc, char **args) {

  int x;
  int a;
  int foo = 0;

  klee_make_symbolic(&x, sizeof(x), "x");
  klee_make_symbolic(&a, sizeof(a), "a");

  klee_open_merge();
  if (a == 0) {
    klee_open_merge();

    for (int i = 0; i < 5; ++i){
      foo += 2;
    }
    if (x == 1) {
      foo += 5;
    } else if (x == 2) {
      for (int i = 0; i < 10; ++i) {
        foo += foo;
      }
    } else {
      foo += 7;
    }

    klee_close_merge();
  } else if (a == 1) {
    foo = 4;
  } else {
    foo = 3;
  }
  klee_close_merge();

  return foo;
}

Example #4

File: merge_fail.c Project: ccadar/klee

int main(int argc, char **args) {

  int* arr = 0;
  int a = 0;

  klee_make_symbolic(&a, sizeof(a), "a");

  klee_open_merge();
  if (a == 0) {
    arr = (int*) malloc(7 * sizeof(int));
    arr[0] = 7;
  } else {
    arr = (int*) malloc(8 * sizeof(int));
    arr[0] = 8;
  }
  klee_close_merge();
  a = arr[0];
  free(arr);

  return a;
}