// This file is part of the SV-Benchmarks collection of verification tasks:
// https://gitlab.com/sosy-lab/benchmarking/sv-benchmarks
//
// SPDX-FileCopyrightText: 2021 F. Schuessele <schuessf@informatik.uni-freiburg.de>
// SPDX-FileCopyrightText: 2021 D. Klumpp <klumpp@informatik.uni-freiburg.de>
//
// SPDX-License-Identifier: LicenseRef-BSD-3-Clause-Attribution-Vandikas

typedef unsigned long int pthread_t;

union pthread_attr_t
{
  char __size[36];
  long int __align;
};
typedef union pthread_attr_t pthread_attr_t;

extern void __assert_fail(const char *__assertion, const char *__file,
      unsigned int __line, const char *__function)
     __attribute__ ((__nothrow__ , __leaf__)) __attribute__ ((__noreturn__));
void reach_error() { __assert_fail("0", "chl-time-symm.wvr.c", 21, __extension__ __PRETTY_FUNCTION__); }
extern int pthread_create (pthread_t *__restrict __newthread,
      const pthread_attr_t *__restrict __attr,
      void *(*__start_routine) (void *),
      void *__restrict __arg) __attribute__ ((__nothrow__)) __attribute__ ((__nonnull__ (1, 3)));
extern int pthread_join (pthread_t __th, void **__thread_return);

extern int   __VERIFIER_nondet_int(void);
extern _Bool __VERIFIER_nondet_bool(void);
extern void  __VERIFIER_atomic_begin();
extern void  __VERIFIER_atomic_end();

extern void abort(void);
void assume_abort_if_not(int cond) {
  if(!cond) {abort();}
}

int ora_0, ora_2;
int volume_totale_1, volume_totale_3;
int cmp_4, cmp_5;
int minus(int a, int b);

void* thread1() {
  __VERIFIER_atomic_begin();
  cmp_4 = minus(ora_0, ora_2);
  cmp_4 = ( ( cmp_4 == 0 ) ? minus(volume_totale_1, volume_totale_3) : cmp_4 );
  __VERIFIER_atomic_end();

  return 0;
}

void* thread2() {
  __VERIFIER_atomic_begin();
  cmp_5 = minus(ora_2, ora_0);
  cmp_5 = ( ( cmp_5 == 0 ) ? minus(volume_totale_3, volume_totale_1) : cmp_5 );
  __VERIFIER_atomic_end();

  return 0;
}


int main() {
  pthread_t t1, t2;

  // initialize global variables
  ora_0 = __VERIFIER_nondet_int();
  ora_2 = __VERIFIER_nondet_int();
  volume_totale_1 = __VERIFIER_nondet_int();
  volume_totale_3 = __VERIFIER_nondet_int();
  cmp_4 = __VERIFIER_nondet_int();
  cmp_5 = __VERIFIER_nondet_int();

  // main method
  pthread_create(&t1, 0, thread1, 0);
  pthread_create(&t2, 0, thread2, 0);
  pthread_join(t1, 0);
  pthread_join(t2, 0);

  assume_abort_if_not( !( ( ( cmp_4 < 0 ) ? ( - 1 ) : ( ( cmp_4 > 0 ) ? 1 : 0 ) ) == ( 0 - ( ( cmp_5 < 0 ) ? ( - 1 ) : ( ( cmp_5 > 0 ) ? 1 : 0 ) ) ) ) );
  reach_error();

  return 0;
}

int minus(int a, int b) {
  assume_abort_if_not(b <= 0 || a >= b - 2147483648);
  assume_abort_if_not(b >= 0 || a <= b + 2147483647);
  return a - b;
}