void abort() { };

                                                                       
                                                  
                                                                             
                                                                   
                                                  
                                                                             
                                                                              
                                                                             

                                                                                                                                                               
                        
void assume_abort_if_not(int cond) {
  if(!cond) {abort();}
}
/*@ 
    requires ((cond != 0)) && (cond != 0);
    ensures ((cond != 0)) && (1);
@*/
void __VERIFIER_assert(int cond) {
  if (!(cond)) {
    ERROR: {/*@ assert(0); */;abort();}
  }
  return;
}
int __VERIFIER_nondet_int();
int main ()
{
  int in;
  int inlen = __VERIFIER_nondet_int();
  int bufferlen = __VERIFIER_nondet_int();
  int buf;
  int buflim;
  if(bufferlen >1);else goto END;
  if(inlen > 0);else goto END;
  if(bufferlen < inlen);else goto END;
  buf = 0;
  in = 0;
  buflim = bufferlen - 2;
/*@
loop invariant (((((((((long long) 2 + buflim) == bufferlen) && (in == 0)) && (0 <= buflim)) && (buf == 0)) && (((long long) bufferlen + 1) <= inlen)) || ((((((((long long) bufferlen + in) + 1) <= ((long long) buf + inlen)) && (((long long) 2 + buflim) == bufferlen)) && (1 <= in)) && (0 <= buf)) && (buf <= buflim))));
@*/
  while (__VERIFIER_nondet_int())
  {
    if (buf == buflim)
      break;
    __VERIFIER_assert(0<=buf);
    __VERIFIER_assert(buf<bufferlen);
    buf++;
out:
    in++;
    __VERIFIER_assert(0<=in);
    __VERIFIER_assert(in<inlen);
  }
    __VERIFIER_assert(0<=buf);
    __VERIFIER_assert(buf<bufferlen);
    buf++;
  __VERIFIER_assert(0<=buf);
  __VERIFIER_assert(buf<bufferlen);
  buf++;
 END: return 0;
}