[L1240]                     0  pthread_mutex_t __global_lock = { { 0, 0, 0, 0, 0, { { 0, 0 } } } };
[L1241-L1244]               0  struct s {
  int datum;
  struct s *next;
} *A;
[L1253]                     0  pthread_mutex_t A_mutex = { { 0, 0, 0, 0, 0, { { 0, 0 } } } };
[L1254]                     0  pthread_mutex_t B_mutex = { { 0, 0, 0, 0, 0, { { 0, 0 } } } };
[L1267]                     0  struct s *p;
[L1268]                     0  A = malloc(sizeof(struct s))
[L1269]        EXPR         0  \read(*A)
[L1269]        CALL         0  init(A,3)
[L1246]                     0  p -> datum = x
[L1247]                     0  p -> next = ((void *)0)
[L1269]        RET          0  init(A,3)
[L1270]                     0  pthread_t t_ids[10000];
[L1270]                     0  int i=0;
               VAL             [A={4:0}, A_mutex={5:0}, B_mutex={6:0}, __global_lock={3:0}, i=0, t_ids={14:0}]
[L1270]        COND TRUE    0  i<10000
[L1270]        FCALL, FORK  0  pthread_create(&t_ids[i], ((void *)0), t_fun, ((void *)0))
               VAL             [A={4:0}, A_mutex={5:0}, B_mutex={6:0}, __global_lock={3:0}, i=0, t_ids={14:0}]
[L1256]                     1  struct s *p = malloc(sizeof(struct s));
[L1257]        CALL         1  init(p,7)
[L1246]                     1  p -> datum = x
[L1247]                     1  p -> next = ((void *)0)
[L1257]        RET          1  init(p,7)
[L1259]        CALL         1  insert(p, &A)
[L1250]        EXPR         1  \read(**list)
[L1250]                     1  p->next = *list
[L1251]                     1  *list = p
[L1259]        RET          1  insert(p, &A)
[L1270]                     0  i++
               VAL             [A={4:0}, A_mutex={5:0}, B_mutex={6:0}, __global_lock={3:0}, i=1, t_ids={14:0}]
[L1262]        COND FALSE   1  !(__VERIFIER_nondet_int())
[L1270]        COND TRUE    0  i<10000
[L1270]        FCALL, FORK  0  pthread_create(&t_ids[i], ((void *)0), t_fun, ((void *)0))
               VAL             [A={4:0}, A_mutex={5:0}, B_mutex={6:0}, __global_lock={3:0}, i=1, t_ids={14:0}]
[L1262]        EXPR         1  p->datum
[L1262]        CALL         1  __VERIFIER_assert((p->datum) == 0)
[L1235]        COND TRUE    1  !(cond)
               VAL             [A={4:0}, A_mutex={5:0}, B_mutex={6:0}, \old(cond)=0, __global_lock={3:0}, cond=0]
[L1235]                     1  reach_error()
               VAL             [A={4:0}, A_mutex={5:0}, B_mutex={6:0}, \old(cond)=0, __global_lock={3:0}, cond=0]