// This file is part of the SV-Benchmarks collection of verification tasks:
// https://gitlab.com/sosy-lab/benchmarking/sv-benchmarks
//
// SPDX-FileCopyrightText: 2013 Carnegie Mellon University
// SPDX-FileCopyrightText: 2014-2021 The SV-Benchmarks Community
// SPDX-FileCopyrightText: 2018 Marie-Christine Jakobs, LMU Munich
//
// SPDX-License-Identifier: LicenseRef-BSD-3-Clause-Attribution-CMU-LMU

int __return_main;
void abort(void);
extern void __assert_fail(const char *, const char *, unsigned int, const char *) __attribute__ ((__nothrow__ , __leaf__)) __attribute__ ((__noreturn__));
void reach_error() { __assert_fail("0", "pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c", 4, "reach_error"); }
_Bool __VERIFIER_nondet_bool();
char __VERIFIER_nondet_char();
unsigned char __VERIFIER_nondet_uchar();
void assert(_Bool arg);
void abort(void);
void assume_abort_if_not(int cond) {
  if(!cond) {abort();}
}
typedef char msg_t;
typedef int port_t;
void read(port_t p, msg_t m);
void write(port_t p, msg_t m);
msg_t nomsg = (msg_t )-1;
unsigned char r1 = '\x0';
port_t p1 = 0;
char p1_old = '\x0';
char p1_new = '\x0';
char id1 = '\x0';
char st1 = '\x0';
msg_t send1 = '\x0';
_Bool mode1 = 0;
port_t p2 = 0;
char p2_old = '\x0';
char p2_new = '\x0';
char id2 = '\x0';
char st2 = '\x0';
msg_t send2 = '\x0';
_Bool mode2 = 0;
port_t p3 = 0;
char p3_old = '\x0';
char p3_new = '\x0';
char id3 = '\x0';
char st3 = '\x0';
msg_t send3 = '\x0';
_Bool mode3 = 0;
port_t p4 = 0;
char p4_old = '\x0';
char p4_new = '\x0';
char id4 = '\x0';
char st4 = '\x0';
msg_t send4 = '\x0';
_Bool mode4 = 0;
void node1();
void node2();
void node3();
void node4();
void (*nodes[4])() = { &node1, &node2, &node3, &node4 };
int init();
int check();
int main();
int __return_121;
int __return_801;
int __return_2632;
int __return_787;
int __return_2474;
int __return_773;
int __return_2355;
int __return_759;
int __return_2230;
int __return_745;
int __return_2128;
int __return_731;
int __return_2003;
int __return_717;
int __return_1896;
int __return_703;
int __return_1788;
int __return_689;
int __return_1692;
int __return_675;
int __return_1564;
int __return_661;
int __return_1454;
int __return_647;
int __return_1346;
int __return_633;
int __return_1250;
int __return_619;
int __return_1142;
int __return_605;
int __return_1049;
int __return_591;
int __return_955;
 int main()
 {
 int main__c1;
 int main__i2;
 main__c1 = 0;
 r1 = __VERIFIER_nondet_uchar();
 id1 = __VERIFIER_nondet_char();
 st1 = __VERIFIER_nondet_char();
 send1 = __VERIFIER_nondet_char();
 mode1 = __VERIFIER_nondet_bool();
 id2 = __VERIFIER_nondet_char();
 st2 = __VERIFIER_nondet_char();
 send2 = __VERIFIER_nondet_char();
 mode2 = __VERIFIER_nondet_bool();
 id3 = __VERIFIER_nondet_char();
 st3 = __VERIFIER_nondet_char();
 send3 = __VERIFIER_nondet_char();
 mode3 = __VERIFIER_nondet_bool();
 id4 = __VERIFIER_nondet_char();
 st4 = __VERIFIER_nondet_char();
 send4 = __VERIFIER_nondet_char();
 mode4 = __VERIFIER_nondet_bool();
 {
 int init__tmp;
 if (((int)r1) == 0)
 {
 if (((int)id1) >= 0)
 {
 if (((int)st1) == 0)
 {
 if (((int)send1) == ((int)id1))
 {
 if (((int)mode1) == 0)
 {
 if (((int)id2) >= 0)
 {
 if (((int)st2) == 0)
 {
 if (((int)send2) == ((int)id2))
 {
 if (((int)mode2) == 0)
 {
 if (((int)id3) >= 0)
 {
 if (((int)st3) == 0)
 {
 if (((int)send3) == ((int)id3))
 {
 if (((int)mode3) == 0)
 {
 if (((int)id4) >= 0)
 {
 if (((int)st4) == 0)
 {
 if (((int)send4) == ((int)id4))
 {
 if (((int)mode4) == 0)
 {
 if (((int)id1) != ((int)id2))
 {
 if (((int)id1) != ((int)id3))
 {
 if (((int)id1) != ((int)id4))
 {
 if (((int)id2) != ((int)id3))
 {
 if (((int)id2) != ((int)id4))
 {
 if (((int)id3) != ((int)id4))
 {
 init__tmp = 1;
  __return_121 = init__tmp;
 main__i2 = __return_121;
 if (main__i2 != 0)
 {
 p1_old = nomsg;
 p1_new = nomsg;
 p2_old = nomsg;
 p2_new = nomsg;
 p3_old = nomsg;
 p3_new = nomsg;
 p4_old = nomsg;
 p4_new = nomsg;
 main__i2 = 0;
 {
 msg_t node1__m1;
 node1__m1 = nomsg;
 if (!(mode1 == 0))
 {
 return __return_main;
 }
 else 
 {
 int node1____CPAchecker_TMP_0;
 if (send1 != nomsg)
 {
 if (p1_new == nomsg)
 {
 node1____CPAchecker_TMP_0 = send1;
 p1_new = node1____CPAchecker_TMP_0;
 mode1 = 1;
 {
 msg_t node2__m2;
 node2__m2 = nomsg;
 if (!(mode2 == 0))
 {
 return __return_main;
 }
 else 
 {
 int node2____CPAchecker_TMP_0;
 if (send2 != nomsg)
 {
 if (p2_new == nomsg)
 {
 node2____CPAchecker_TMP_0 = send2;
 p2_new = node2____CPAchecker_TMP_0;
 mode2 = 1;
 {
 msg_t node3__m3;
 node3__m3 = nomsg;
 if (!(mode3 == 0))
 {
 return __return_main;
 }
 else 
 {
 int node3____CPAchecker_TMP_0;
 if (send3 != nomsg)
 {
 if (p3_new == nomsg)
 {
 node3____CPAchecker_TMP_0 = send3;
 p3_new = node3____CPAchecker_TMP_0;
 mode3 = 1;
 {
 msg_t node4__m4;
 node4__m4 = nomsg;
 if (!(mode4 == 0))
 {
 return __return_main;
 }
 else 
 {
 int node4____CPAchecker_TMP_0;
 if (send4 != nomsg)
 {
 if (p4_new == nomsg)
 {
 node4____CPAchecker_TMP_0 = send4;
 p4_new = node4____CPAchecker_TMP_0;
 mode4 = 1;
 p1_old = p1_new;
 p1_new = nomsg;
 p2_old = p2_new;
 p2_new = nomsg;
 p3_old = p3_new;
 p3_new = nomsg;
 p4_old = p4_new;
 p4_new = nomsg;
 {
 int check__tmp;
 if ((((((int)st1) + ((int)st2)) + ((int)st3)) + ((int)st4)) <= 1)
 {
 if (((int)r1) >= 4)
 {
 return __return_main;
 }
 else 
 {
 if ((((((int)st1) + ((int)st2)) + ((int)st3)) + ((int)st4)) == 0)
 {
 if (((int)r1) < 4)
 {
 check__tmp = 1;
  __return_801 = check__tmp;
 main__c1 = __return_801;
 {
 _Bool __tmp_1;
 __tmp_1 = main__c1;
 _Bool assert__arg;
 assert__arg = __tmp_1;
 if (assert__arg == 0)
 {
 return __return_main;
 }
 else 
 {
 {
 msg_t node1__m1;
 node1__m1 = nomsg;
 if (!(mode1 == 0))
 {
 if (r1 == 255)
 {
 return __return_main;
 }
 else 
 {
 r1 = r1 + 1;
 node1__m1 = p4_old;
 p4_old = nomsg;
 if (((int)node1__m1) != ((int)nomsg))
 {
 if (((int)node1__m1) > ((int)id1))
 {
 send1 = node1__m1;
 goto label_2494;
 }
 else 
 {
 if (((int)node1__m1) == ((int)id1))
 {
 st1 = 1;
 mode1 = 0;
 {
 msg_t node2__m2;
 node2__m2 = nomsg;
 if (!(mode2 == 0))
 {
 node2__m2 = p1_old;
 p1_old = nomsg;
 if (((int)node2__m2) != ((int)nomsg))
 {
 if (((int)node2__m2) > ((int)id2))
 {
 send2 = node2__m2;
 goto label_2523;
 }
 else 
 {
 if (((int)node2__m2) == ((int)id2))
 {
 st2 = 1;
 mode2 = 0;
 {
 msg_t node3__m3;
 node3__m3 = nomsg;
 if (!(mode3 == 0))
 {
 node3__m3 = p2_old;
 p2_old = nomsg;
 if (((int)node3__m3) != ((int)nomsg))
 {
 if (((int)node3__m3) > ((int)id3))
 {
 send3 = node3__m3;
 goto label_2552;
 }
 else 
 {
 if (((int)node3__m3) == ((int)id3))
 {
 st3 = 1;
 mode3 = 0;
 {
 msg_t node4__m4;
 node4__m4 = nomsg;
 if (!(mode4 == 0))
 {
 node4__m4 = p3_old;
 p3_old = nomsg;
 if (((int)node4__m4) != ((int)nomsg))
 {
 if (((int)node4__m4) > ((int)id4))
 {
 send4 = node4__m4;
 goto label_2581;
 }
 else 
 {
 if (((int)node4__m4) == ((int)id4))
 {
 st4 = 1;
 mode4 = 0;
 p1_old = p1_new;
 p1_new = nomsg;
 p2_old = p2_new;
 p2_new = nomsg;
 p3_old = p3_new;
 p3_new = nomsg;
 p4_old = p4_new;
 p4_new = nomsg;
 label_2604:; 
 {
 int check__tmp;
 if ((((((int)st1) + ((int)st2)) + ((int)st3)) + ((int)st4)) <= 1)
 {
 if (((int)r1) >= 4)
 {
 goto label_2618;
 }
 else 
 {
 if ((((((int)st1) + ((int)st2)) + ((int)st3)) + ((int)st4)) == 0)
 {
 label_2618:; 
 if (((int)r1) < 4)
 {
 check__tmp = 1;
 goto label_2625;
 }
 else 
 {
 if ((((((int)st1) + ((int)st2)) + ((int)st3)) + ((int)st4)) == 1)
 {
 check__tmp = 1;
 goto label_2625;
 }
 else 
 {
 check__tmp = 0;
 label_2625:; 
 goto label_2617;
 }
 }
 }
 else 
 {
 check__tmp = 0;
 label_2617:; 
 goto label_2611;
 }
 }
 }
 else 
 {
 check__tmp = 0;
 label_2611:; 
  __return_2632 = check__tmp;
 main__c1 = __return_2632;
 goto label_1693;
 }
 }
 }
 else 
 {
 label_2581:; 
 mode4 = 0;
 goto label_2592;
 }
 }
 }
 else 
 {
 mode4 = 0;
 label_2592:; 
 goto label_2340;
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 else 
 {
 label_2552:; 
 mode3 = 0;
 goto label_2563;
 }
 }
 }
 else 
 {
 mode3 = 0;
 label_2563:; 
 goto label_2084;
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 else 
 {
 label_2523:; 
 mode2 = 0;
 goto label_2534;
 }
 }
 }
 else 
 {
 mode2 = 0;
 label_2534:; 
 goto label_1619;
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 else 
 {
 send1 = node1__m1;
 label_2494:; 
 mode1 = 0;
 goto label_2505;
 }
 }
 }
 else 
 {
 mode1 = 0;
 label_2505:; 
 goto label_2372;
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 else 
 {
 node4____CPAchecker_TMP_0 = p4_new;
 p4_new = node4____CPAchecker_TMP_0;
 mode4 = 1;
 p1_old = p1_new;
 p1_new = nomsg;
 p2_old = p2_new;
 p2_new = nomsg;
 p3_old = p3_new;
 p3_new = nomsg;
 p4_old = p4_new;
 p4_new = nomsg;
 {
 int check__tmp;
 if ((((((int)st1) + ((int)st2)) + ((int)st3)) + ((int)st4)) <= 1)
 {
 if (((int)r1) >= 4)
 {
 return __return_main;
 }
 else 
 {
 if ((((((int)st1) + ((int)st2)) + ((int)st3)) + ((int)st4)) == 0)
 {
 if (((int)r1) < 4)
 {
 check__tmp = 1;
  __return_787 = check__tmp;
 main__c1 = __return_787;
 {
 _Bool __tmp_2;
 __tmp_2 = main__c1;
 _Bool assert__arg;
 assert__arg = __tmp_2;
 if (assert__arg == 0)
 {
 return __return_main;
 }
 else 
 {
 {
 msg_t node1__m1;
 node1__m1 = nomsg;
 if (!(mode1 == 0))
 {
 if (r1 == 255)
 {
 return __return_main;
 }
 else 
 {
 r1 = r1 + 1;
 node1__m1 = p4_old;
 p4_old = nomsg;
 if (((int)node1__m1) != ((int)nomsg))
 {
 return __return_main;
 }
 else 
 {
 mode1 = 0;
 label_2372:; 
 {
 msg_t node2__m2;
 node2__m2 = nomsg;
 if (!(mode2 == 0))
 {
 node2__m2 = p1_old;
 p1_old = nomsg;
 if (((int)node2__m2) != ((int)nomsg))
 {
 if (((int)node2__m2) > ((int)id2))
 {
 send2 = node2__m2;
 goto label_2386;
 }
 else 
 {
 if (((int)node2__m2) == ((int)id2))
 {
 st2 = 1;
 mode2 = 0;
 {
 msg_t node3__m3;
 node3__m3 = nomsg;
 if (!(mode3 == 0))
 {
 node3__m3 = p2_old;
 p2_old = nomsg;
 if (((int)node3__m3) != ((int)nomsg))
 {
 if (((int)node3__m3) > ((int)id3))
 {
 send3 = node3__m3;
 goto label_2415;
 }
 else 
 {
 if (((int)node3__m3) == ((int)id3))
 {
 st3 = 1;
 mode3 = 0;
 {
 msg_t node4__m4;
 node4__m4 = nomsg;
 if (!(mode4 == 0))
 {
 node4__m4 = p3_old;
 p3_old = nomsg;
 if (((int)node4__m4) != ((int)nomsg))
 {
 if (((int)node4__m4) > ((int)id4))
 {
 send4 = node4__m4;
 goto label_2444;
 }
 else 
 {
 if (((int)node4__m4) == ((int)id4))
 {
 st4 = 1;
 mode4 = 0;
 p1_old = p1_new;
 p1_new = nomsg;
 p2_old = p2_new;
 p2_new = nomsg;
 p3_old = p3_new;
 p3_new = nomsg;
 p4_old = p4_new;
 p4_new = nomsg;
 {
 int check__tmp;
 if ((((((int)st1) + ((int)st2)) + ((int)st3)) + ((int)st4)) <= 1)
 {
 return __return_main;
 }
 else 
 {
 check__tmp = 0;
  __return_2474 = check__tmp;
 main__c1 = __return_2474;
 goto label_1693;
 }
 }
 }
 else 
 {
 label_2444:; 
 mode4 = 0;
 goto label_2455;
 }
 }
 }
 else 
 {
 mode4 = 0;
 label_2455:; 
 goto label_2215;
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 else 
 {
 label_2415:; 
 mode3 = 0;
 goto label_2426;
 }
 }
 }
 else 
 {
 mode3 = 0;
 label_2426:; 
 goto label_1959;
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 else 
 {
 label_2386:; 
 mode2 = 0;
 goto label_2397;
 }
 }
 }
 else 
 {
 mode2 = 0;
 label_2397:; 
 goto label_1491;
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 else 
 {
 node3____CPAchecker_TMP_0 = p3_new;
 p3_new = node3____CPAchecker_TMP_0;
 mode3 = 1;
 {
 msg_t node4__m4;
 node4__m4 = nomsg;
 if (!(mode4 == 0))
 {
 return __return_main;
 }
 else 
 {
 int node4____CPAchecker_TMP_0;
 if (send4 != nomsg)
 {
 if (p4_new == nomsg)
 {
 node4____CPAchecker_TMP_0 = send4;
 p4_new = node4____CPAchecker_TMP_0;
 mode4 = 1;
 p1_old = p1_new;
 p1_new = nomsg;
 p2_old = p2_new;
 p2_new = nomsg;
 p3_old = p3_new;
 p3_new = nomsg;
 p4_old = p4_new;
 p4_new = nomsg;
 {
 int check__tmp;
 if ((((((int)st1) + ((int)st2)) + ((int)st3)) + ((int)st4)) <= 1)
 {
 if (((int)r1) >= 4)
 {
 return __return_main;
 }
 else 
 {
 if ((((((int)st1) + ((int)st2)) + ((int)st3)) + ((int)st4)) == 0)
 {
 if (((int)r1) < 4)
 {
 check__tmp = 1;
  __return_773 = check__tmp;
 main__c1 = __return_773;
 {
 _Bool __tmp_3;
 __tmp_3 = main__c1;
 _Bool assert__arg;
 assert__arg = __tmp_3;
 if (assert__arg == 0)
 {
 return __return_main;
 }
 else 
 {
 {
 msg_t node1__m1;
 node1__m1 = nomsg;
 if (!(mode1 == 0))
 {
 if (r1 == 255)
 {
 return __return_main;
 }
 else 
 {
 r1 = r1 + 1;
 node1__m1 = p4_old;
 p4_old = nomsg;
 if (((int)node1__m1) != ((int)nomsg))
 {
 if (((int)node1__m1) > ((int)id1))
 {
 send1 = node1__m1;
 goto label_2255;
 }
 else 
 {
 if (((int)node1__m1) == ((int)id1))
 {
 st1 = 1;
 mode1 = 0;
 {
 msg_t node2__m2;
 node2__m2 = nomsg;
 if (!(mode2 == 0))
 {
 node2__m2 = p1_old;
 p1_old = nomsg;
 if (((int)node2__m2) != ((int)nomsg))
 {
 if (((int)node2__m2) > ((int)id2))
 {
 send2 = node2__m2;
 goto label_2284;
 }
 else 
 {
 if (((int)node2__m2) == ((int)id2))
 {
 st2 = 1;
 mode2 = 0;
 {
 msg_t node3__m3;
 node3__m3 = nomsg;
 if (!(mode3 == 0))
 {
 node3__m3 = p2_old;
 p2_old = nomsg;
 if (((int)node3__m3) != ((int)nomsg))
 {
 if (((int)node3__m3) > ((int)id3))
 {
 send3 = node3__m3;
 goto label_2313;
 }
 else 
 {
 if (((int)node3__m3) == ((int)id3))
 {
 st3 = 1;
 mode3 = 0;
 {
 msg_t node4__m4;
 node4__m4 = nomsg;
 if (!(mode4 == 0))
 {
 node4__m4 = p3_old;
 p3_old = nomsg;
 if (((int)node4__m4) != ((int)nomsg))
 {
 return __return_main;
 }
 else 
 {
 mode4 = 0;
 label_2340:; 
 p1_old = p1_new;
 p1_new = nomsg;
 p2_old = p2_new;
 p2_new = nomsg;
 p3_old = p3_new;
 p3_new = nomsg;
 p4_old = p4_new;
 p4_new = nomsg;
 {
 int check__tmp;
 if ((((((int)st1) + ((int)st2)) + ((int)st3)) + ((int)st4)) <= 1)
 {
 return __return_main;
 }
 else 
 {
 check__tmp = 0;
  __return_2355 = check__tmp;
 main__c1 = __return_2355;
 goto label_1693;
 }
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 else 
 {
 label_2313:; 
 mode3 = 0;
 goto label_2324;
 }
 }
 }
 else 
 {
 mode3 = 0;
 label_2324:; 
 goto label_1869;
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 else 
 {
 label_2284:; 
 mode2 = 0;
 goto label_2295;
 }
 }
 }
 else 
 {
 mode2 = 0;
 label_2295:; 
 goto label_1398;
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 else 
 {
 send1 = node1__m1;
 label_2255:; 
 mode1 = 0;
 goto label_2266;
 }
 }
 }
 else 
 {
 mode1 = 0;
 label_2266:; 
 goto label_2145;
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 else 
 {
 node4____CPAchecker_TMP_0 = p4_new;
 p4_new = node4____CPAchecker_TMP_0;
 mode4 = 1;
 p1_old = p1_new;
 p1_new = nomsg;
 p2_old = p2_new;
 p2_new = nomsg;
 p3_old = p3_new;
 p3_new = nomsg;
 p4_old = p4_new;
 p4_new = nomsg;
 {
 int check__tmp;
 if ((((((int)st1) + ((int)st2)) + ((int)st3)) + ((int)st4)) <= 1)
 {
 if (((int)r1) >= 4)
 {
 return __return_main;
 }
 else 
 {
 if ((((((int)st1) + ((int)st2)) + ((int)st3)) + ((int)st4)) == 0)
 {
 if (((int)r1) < 4)
 {
 check__tmp = 1;
  __return_759 = check__tmp;
 main__c1 = __return_759;
 {
 _Bool __tmp_4;
 __tmp_4 = main__c1;
 _Bool assert__arg;
 assert__arg = __tmp_4;
 if (assert__arg == 0)
 {
 return __return_main;
 }
 else 
 {
 {
 msg_t node1__m1;
 node1__m1 = nomsg;
 if (!(mode1 == 0))
 {
 if (r1 == 255)
 {
 return __return_main;
 }
 else 
 {
 r1 = r1 + 1;
 node1__m1 = p4_old;
 p4_old = nomsg;
 if (((int)node1__m1) != ((int)nomsg))
 {
 return __return_main;
 }
 else 
 {
 mode1 = 0;
 label_2145:; 
 {
 msg_t node2__m2;
 node2__m2 = nomsg;
 if (!(mode2 == 0))
 {
 node2__m2 = p1_old;
 p1_old = nomsg;
 if (((int)node2__m2) != ((int)nomsg))
 {
 if (((int)node2__m2) > ((int)id2))
 {
 send2 = node2__m2;
 goto label_2159;
 }
 else 
 {
 if (((int)node2__m2) == ((int)id2))
 {
 st2 = 1;
 mode2 = 0;
 {
 msg_t node3__m3;
 node3__m3 = nomsg;
 if (!(mode3 == 0))
 {
 node3__m3 = p2_old;
 p2_old = nomsg;
 if (((int)node3__m3) != ((int)nomsg))
 {
 if (((int)node3__m3) > ((int)id3))
 {
 send3 = node3__m3;
 goto label_2188;
 }
 else 
 {
 if (((int)node3__m3) == ((int)id3))
 {
 st3 = 1;
 mode3 = 0;
 {
 msg_t node4__m4;
 node4__m4 = nomsg;
 if (!(mode4 == 0))
 {
 node4__m4 = p3_old;
 p3_old = nomsg;
 if (((int)node4__m4) != ((int)nomsg))
 {
 return __return_main;
 }
 else 
 {
 mode4 = 0;
 label_2215:; 
 p1_old = p1_new;
 p1_new = nomsg;
 p2_old = p2_new;
 p2_new = nomsg;
 p3_old = p3_new;
 p3_new = nomsg;
 p4_old = p4_new;
 p4_new = nomsg;
 {
 int check__tmp;
 if ((((((int)st1) + ((int)st2)) + ((int)st3)) + ((int)st4)) <= 1)
 {
 return __return_main;
 }
 else 
 {
 check__tmp = 0;
  __return_2230 = check__tmp;
 main__c1 = __return_2230;
 {
 _Bool __tmp_5;
 __tmp_5 = main__c1;
 _Bool assert__arg;
 assert__arg = __tmp_5;
 if (assert__arg == 0)
 {
 {reach_error();}
 return __return_main;
 }
 else 
 {
 return __return_main;
 }
 }
 }
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 else 
 {
 label_2188:; 
 mode3 = 0;
 goto label_2199;
 }
 }
 }
 else 
 {
 mode3 = 0;
 label_2199:; 
 goto label_1758;
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 else 
 {
 label_2159:; 
 mode2 = 0;
 goto label_2170;
 }
 }
 }
 else 
 {
 mode2 = 0;
 label_2170:; 
 goto label_1287;
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 }
 }
 }
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 else 
 {
 node2____CPAchecker_TMP_0 = p2_new;
 p2_new = node2____CPAchecker_TMP_0;
 mode2 = 1;
 {
 msg_t node3__m3;
 node3__m3 = nomsg;
 if (!(mode3 == 0))
 {
 return __return_main;
 }
 else 
 {
 int node3____CPAchecker_TMP_0;
 if (send3 != nomsg)
 {
 if (p3_new == nomsg)
 {
 node3____CPAchecker_TMP_0 = send3;
 p3_new = node3____CPAchecker_TMP_0;
 mode3 = 1;
 {
 msg_t node4__m4;
 node4__m4 = nomsg;
 if (!(mode4 == 0))
 {
 return __return_main;
 }
 else 
 {
 int node4____CPAchecker_TMP_0;
 if (send4 != nomsg)
 {
 if (p4_new == nomsg)
 {
 node4____CPAchecker_TMP_0 = send4;
 p4_new = node4____CPAchecker_TMP_0;
 mode4 = 1;
 p1_old = p1_new;
 p1_new = nomsg;
 p2_old = p2_new;
 p2_new = nomsg;
 p3_old = p3_new;
 p3_new = nomsg;
 p4_old = p4_new;
 p4_new = nomsg;
 {
 int check__tmp;
 if ((((((int)st1) + ((int)st2)) + ((int)st3)) + ((int)st4)) <= 1)
 {
 if (((int)r1) >= 4)
 {
 return __return_main;
 }
 else 
 {
 if ((((((int)st1) + ((int)st2)) + ((int)st3)) + ((int)st4)) == 0)
 {
 if (((int)r1) < 4)
 {
 check__tmp = 1;
  __return_745 = check__tmp;
 main__c1 = __return_745;
 {
 _Bool __tmp_6;
 __tmp_6 = main__c1;
 _Bool assert__arg;
 assert__arg = __tmp_6;
 if (assert__arg == 0)
 {
 return __return_main;
 }
 else 
 {
 {
 msg_t node1__m1;
 node1__m1 = nomsg;
 if (!(mode1 == 0))
 {
 if (r1 == 255)
 {
 return __return_main;
 }
 else 
 {
 r1 = r1 + 1;
 node1__m1 = p4_old;
 p4_old = nomsg;
 if (((int)node1__m1) != ((int)nomsg))
 {
 if (((int)node1__m1) > ((int)id1))
 {
 send1 = node1__m1;
 goto label_2028;
 }
 else 
 {
 if (((int)node1__m1) == ((int)id1))
 {
 st1 = 1;
 mode1 = 0;
 {
 msg_t node2__m2;
 node2__m2 = nomsg;
 if (!(mode2 == 0))
 {
 node2__m2 = p1_old;
 p1_old = nomsg;
 if (((int)node2__m2) != ((int)nomsg))
 {
 if (((int)node2__m2) > ((int)id2))
 {
 send2 = node2__m2;
 goto label_2057;
 }
 else 
 {
 if (((int)node2__m2) == ((int)id2))
 {
 st2 = 1;
 mode2 = 0;
 {
 msg_t node3__m3;
 node3__m3 = nomsg;
 if (!(mode3 == 0))
 {
 node3__m3 = p2_old;
 p2_old = nomsg;
 if (((int)node3__m3) != ((int)nomsg))
 {
 return __return_main;
 }
 else 
 {
 mode3 = 0;
 label_2084:; 
 {
 msg_t node4__m4;
 node4__m4 = nomsg;
 if (!(mode4 == 0))
 {
 node4__m4 = p3_old;
 p3_old = nomsg;
 if (((int)node4__m4) != ((int)nomsg))
 {
 if (((int)node4__m4) > ((int)id4))
 {
 send4 = node4__m4;
 goto label_2098;
 }
 else 
 {
 if (((int)node4__m4) == ((int)id4))
 {
 st4 = 1;
 mode4 = 0;
 p1_old = p1_new;
 p1_new = nomsg;
 p2_old = p2_new;
 p2_new = nomsg;
 p3_old = p3_new;
 p3_new = nomsg;
 p4_old = p4_new;
 p4_new = nomsg;
 {
 int check__tmp;
 if ((((((int)st1) + ((int)st2)) + ((int)st3)) + ((int)st4)) <= 1)
 {
 return __return_main;
 }
 else 
 {
 check__tmp = 0;
  __return_2128 = check__tmp;
 main__c1 = __return_2128;
 goto label_1693;
 }
 }
 }
 else 
 {
 label_2098:; 
 mode4 = 0;
 goto label_2109;
 }
 }
 }
 else 
 {
 mode4 = 0;
 label_2109:; 
 goto label_1881;
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 else 
 {
 label_2057:; 
 mode2 = 0;
 goto label_2068;
 }
 }
 }
 else 
 {
 mode2 = 0;
 label_2068:; 
 goto label_1194;
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 else 
 {
 send1 = node1__m1;
 label_2028:; 
 mode1 = 0;
 goto label_2039;
 }
 }
 }
 else 
 {
 mode1 = 0;
 label_2039:; 
 goto label_1918;
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 else 
 {
 node4____CPAchecker_TMP_0 = p4_new;
 p4_new = node4____CPAchecker_TMP_0;
 mode4 = 1;
 p1_old = p1_new;
 p1_new = nomsg;
 p2_old = p2_new;
 p2_new = nomsg;
 p3_old = p3_new;
 p3_new = nomsg;
 p4_old = p4_new;
 p4_new = nomsg;
 {
 int check__tmp;
 if ((((((int)st1) + ((int)st2)) + ((int)st3)) + ((int)st4)) <= 1)
 {
 if (((int)r1) >= 4)
 {
 return __return_main;
 }
 else 
 {
 if ((((((int)st1) + ((int)st2)) + ((int)st3)) + ((int)st4)) == 0)
 {
 if (((int)r1) < 4)
 {
 check__tmp = 1;
  __return_731 = check__tmp;
 main__c1 = __return_731;
 {
 _Bool __tmp_7;
 __tmp_7 = main__c1;
 _Bool assert__arg;
 assert__arg = __tmp_7;
 if (assert__arg == 0)
 {
 return __return_main;
 }
 else 
 {
 {
 msg_t node1__m1;
 node1__m1 = nomsg;
 if (!(mode1 == 0))
 {
 if (r1 == 255)
 {
 return __return_main;
 }
 else 
 {
 r1 = r1 + 1;
 node1__m1 = p4_old;
 p4_old = nomsg;
 if (((int)node1__m1) != ((int)nomsg))
 {
 return __return_main;
 }
 else 
 {
 mode1 = 0;
 label_1918:; 
 {
 msg_t node2__m2;
 node2__m2 = nomsg;
 if (!(mode2 == 0))
 {
 node2__m2 = p1_old;
 p1_old = nomsg;
 if (((int)node2__m2) != ((int)nomsg))
 {
 if (((int)node2__m2) > ((int)id2))
 {
 send2 = node2__m2;
 goto label_1932;
 }
 else 
 {
 if (((int)node2__m2) == ((int)id2))
 {
 st2 = 1;
 mode2 = 0;
 {
 msg_t node3__m3;
 node3__m3 = nomsg;
 if (!(mode3 == 0))
 {
 node3__m3 = p2_old;
 p2_old = nomsg;
 if (((int)node3__m3) != ((int)nomsg))
 {
 return __return_main;
 }
 else 
 {
 mode3 = 0;
 label_1959:; 
 {
 msg_t node4__m4;
 node4__m4 = nomsg;
 if (!(mode4 == 0))
 {
 node4__m4 = p3_old;
 p3_old = nomsg;
 if (((int)node4__m4) != ((int)nomsg))
 {
 if (((int)node4__m4) > ((int)id4))
 {
 send4 = node4__m4;
 goto label_1973;
 }
 else 
 {
 if (((int)node4__m4) == ((int)id4))
 {
 st4 = 1;
 mode4 = 0;
 p1_old = p1_new;
 p1_new = nomsg;
 p2_old = p2_new;
 p2_new = nomsg;
 p3_old = p3_new;
 p3_new = nomsg;
 p4_old = p4_new;
 p4_new = nomsg;
 {
 int check__tmp;
 if ((((((int)st1) + ((int)st2)) + ((int)st3)) + ((int)st4)) <= 1)
 {
 return __return_main;
 }
 else 
 {
 check__tmp = 0;
  __return_2003 = check__tmp;
 main__c1 = __return_2003;
 {
 _Bool __tmp_8;
 __tmp_8 = main__c1;
 _Bool assert__arg;
 assert__arg = __tmp_8;
 if (assert__arg == 0)
 {
 {reach_error();}
 return __return_main;
 }
 else 
 {
 return __return_main;
 }
 }
 }
 }
 }
 else 
 {
 label_1973:; 
 mode4 = 0;
 goto label_1984;
 }
 }
 }
 else 
 {
 mode4 = 0;
 label_1984:; 
 goto label_1770;
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 else 
 {
 label_1932:; 
 mode2 = 0;
 goto label_1943;
 }
 }
 }
 else 
 {
 mode2 = 0;
 label_1943:; 
 goto label_1083;
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 else 
 {
 node3____CPAchecker_TMP_0 = p3_new;
 p3_new = node3____CPAchecker_TMP_0;
 mode3 = 1;
 {
 msg_t node4__m4;
 node4__m4 = nomsg;
 if (!(mode4 == 0))
 {
 return __return_main;
 }
 else 
 {
 int node4____CPAchecker_TMP_0;
 if (send4 != nomsg)
 {
 if (p4_new == nomsg)
 {
 node4____CPAchecker_TMP_0 = send4;
 p4_new = node4____CPAchecker_TMP_0;
 mode4 = 1;
 p1_old = p1_new;
 p1_new = nomsg;
 p2_old = p2_new;
 p2_new = nomsg;
 p3_old = p3_new;
 p3_new = nomsg;
 p4_old = p4_new;
 p4_new = nomsg;
 {
 int check__tmp;
 if ((((((int)st1) + ((int)st2)) + ((int)st3)) + ((int)st4)) <= 1)
 {
 if (((int)r1) >= 4)
 {
 return __return_main;
 }
 else 
 {
 if ((((((int)st1) + ((int)st2)) + ((int)st3)) + ((int)st4)) == 0)
 {
 if (((int)r1) < 4)
 {
 check__tmp = 1;
  __return_717 = check__tmp;
 main__c1 = __return_717;
 {
 _Bool __tmp_9;
 __tmp_9 = main__c1;
 _Bool assert__arg;
 assert__arg = __tmp_9;
 if (assert__arg == 0)
 {
 return __return_main;
 }
 else 
 {
 {
 msg_t node1__m1;
 node1__m1 = nomsg;
 if (!(mode1 == 0))
 {
 if (r1 == 255)
 {
 return __return_main;
 }
 else 
 {
 r1 = r1 + 1;
 node1__m1 = p4_old;
 p4_old = nomsg;
 if (((int)node1__m1) != ((int)nomsg))
 {
 if (((int)node1__m1) > ((int)id1))
 {
 send1 = node1__m1;
 goto label_1813;
 }
 else 
 {
 if (((int)node1__m1) == ((int)id1))
 {
 st1 = 1;
 mode1 = 0;
 {
 msg_t node2__m2;
 node2__m2 = nomsg;
 if (!(mode2 == 0))
 {
 node2__m2 = p1_old;
 p1_old = nomsg;
 if (((int)node2__m2) != ((int)nomsg))
 {
 if (((int)node2__m2) > ((int)id2))
 {
 send2 = node2__m2;
 goto label_1842;
 }
 else 
 {
 if (((int)node2__m2) == ((int)id2))
 {
 st2 = 1;
 mode2 = 0;
 {
 msg_t node3__m3;
 node3__m3 = nomsg;
 if (!(mode3 == 0))
 {
 node3__m3 = p2_old;
 p2_old = nomsg;
 if (((int)node3__m3) != ((int)nomsg))
 {
 return __return_main;
 }
 else 
 {
 mode3 = 0;
 label_1869:; 
 {
 msg_t node4__m4;
 node4__m4 = nomsg;
 if (!(mode4 == 0))
 {
 node4__m4 = p3_old;
 p3_old = nomsg;
 if (((int)node4__m4) != ((int)nomsg))
 {
 return __return_main;
 }
 else 
 {
 mode4 = 0;
 label_1881:; 
 p1_old = p1_new;
 p1_new = nomsg;
 p2_old = p2_new;
 p2_new = nomsg;
 p3_old = p3_new;
 p3_new = nomsg;
 p4_old = p4_new;
 p4_new = nomsg;
 {
 int check__tmp;
 if ((((((int)st1) + ((int)st2)) + ((int)st3)) + ((int)st4)) <= 1)
 {
 return __return_main;
 }
 else 
 {
 check__tmp = 0;
  __return_1896 = check__tmp;
 main__c1 = __return_1896;
 {
 _Bool __tmp_10;
 __tmp_10 = main__c1;
 _Bool assert__arg;
 assert__arg = __tmp_10;
 if (assert__arg == 0)
 {
 {reach_error();}
 return __return_main;
 }
 else 
 {
 return __return_main;
 }
 }
 }
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 else 
 {
 label_1842:; 
 mode2 = 0;
 goto label_1853;
 }
 }
 }
 else 
 {
 mode2 = 0;
 label_1853:; 
 goto label_1007;
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 else 
 {
 send1 = node1__m1;
 label_1813:; 
 mode1 = 0;
 goto label_1824;
 }
 }
 }
 else 
 {
 mode1 = 0;
 label_1824:; 
 goto label_1717;
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 else 
 {
 node4____CPAchecker_TMP_0 = p4_new;
 p4_new = node4____CPAchecker_TMP_0;
 mode4 = 1;
 p1_old = p1_new;
 p1_new = nomsg;
 p2_old = p2_new;
 p2_new = nomsg;
 p3_old = p3_new;
 p3_new = nomsg;
 p4_old = p4_new;
 p4_new = nomsg;
 {
 int check__tmp;
 if ((((((int)st1) + ((int)st2)) + ((int)st3)) + ((int)st4)) <= 1)
 {
 if (((int)r1) >= 4)
 {
 return __return_main;
 }
 else 
 {
 if ((((((int)st1) + ((int)st2)) + ((int)st3)) + ((int)st4)) == 0)
 {
 if (((int)r1) < 4)
 {
 check__tmp = 1;
  __return_703 = check__tmp;
 main__c1 = __return_703;
 {
 _Bool __tmp_11;
 __tmp_11 = main__c1;
 _Bool assert__arg;
 assert__arg = __tmp_11;
 if (assert__arg == 0)
 {
 return __return_main;
 }
 else 
 {
 {
 msg_t node1__m1;
 node1__m1 = nomsg;
 if (!(mode1 == 0))
 {
 if (r1 == 255)
 {
 return __return_main;
 }
 else 
 {
 r1 = r1 + 1;
 node1__m1 = p4_old;
 p4_old = nomsg;
 if (((int)node1__m1) != ((int)nomsg))
 {
 return __return_main;
 }
 else 
 {
 mode1 = 0;
 label_1717:; 
 {
 msg_t node2__m2;
 node2__m2 = nomsg;
 if (!(mode2 == 0))
 {
 node2__m2 = p1_old;
 p1_old = nomsg;
 if (((int)node2__m2) != ((int)nomsg))
 {
 if (((int)node2__m2) > ((int)id2))
 {
 send2 = node2__m2;
 goto label_1731;
 }
 else 
 {
 if (((int)node2__m2) == ((int)id2))
 {
 st2 = 1;
 mode2 = 0;
 {
 msg_t node3__m3;
 node3__m3 = nomsg;
 if (!(mode3 == 0))
 {
 node3__m3 = p2_old;
 p2_old = nomsg;
 if (((int)node3__m3) != ((int)nomsg))
 {
 return __return_main;
 }
 else 
 {
 mode3 = 0;
 label_1758:; 
 {
 msg_t node4__m4;
 node4__m4 = nomsg;
 if (!(mode4 == 0))
 {
 node4__m4 = p3_old;
 p3_old = nomsg;
 if (((int)node4__m4) != ((int)nomsg))
 {
 return __return_main;
 }
 else 
 {
 mode4 = 0;
 label_1770:; 
 p1_old = p1_new;
 p1_new = nomsg;
 p2_old = p2_new;
 p2_new = nomsg;
 p3_old = p3_new;
 p3_new = nomsg;
 p4_old = p4_new;
 p4_new = nomsg;
 {
 int check__tmp;
 if ((((((int)st1) + ((int)st2)) + ((int)st3)) + ((int)st4)) <= 1)
 {
 if (((int)r1) >= 4)
 {
 return __return_main;
 }
 else 
 {
 if ((((((int)st1) + ((int)st2)) + ((int)st3)) + ((int)st4)) == 0)
 {
 return __return_main;
 }
 else 
 {
 check__tmp = 0;
  __return_1788 = check__tmp;
 main__c1 = __return_1788;
 {
 _Bool __tmp_12;
 __tmp_12 = main__c1;
 _Bool assert__arg;
 assert__arg = __tmp_12;
 if (assert__arg == 0)
 {
 {reach_error();}
 return __return_main;
 }
 else 
 {
 return __return_main;
 }
 }
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 else 
 {
 label_1731:; 
 mode2 = 0;
 goto label_1742;
 }
 }
 }
 else 
 {
 mode2 = 0;
 label_1742:; 
 goto label_910;
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 }
 }
 }
 }
 }
 }
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 else 
 {
 node1____CPAchecker_TMP_0 = p1_new;
 p1_new = node1____CPAchecker_TMP_0;
 mode1 = 1;
 {
 msg_t node2__m2;
 node2__m2 = nomsg;
 if (!(mode2 == 0))
 {
 return __return_main;
 }
 else 
 {
 int node2____CPAchecker_TMP_0;
 if (send2 != nomsg)
 {
 if (p2_new == nomsg)
 {
 node2____CPAchecker_TMP_0 = send2;
 p2_new = node2____CPAchecker_TMP_0;
 mode2 = 1;
 {
 msg_t node3__m3;
 node3__m3 = nomsg;
 if (!(mode3 == 0))
 {
 return __return_main;
 }
 else 
 {
 int node3____CPAchecker_TMP_0;
 if (send3 != nomsg)
 {
 if (p3_new == nomsg)
 {
 node3____CPAchecker_TMP_0 = send3;
 p3_new = node3____CPAchecker_TMP_0;
 mode3 = 1;
 {
 msg_t node4__m4;
 node4__m4 = nomsg;
 if (!(mode4 == 0))
 {
 return __return_main;
 }
 else 
 {
 int node4____CPAchecker_TMP_0;
 if (send4 != nomsg)
 {
 if (p4_new == nomsg)
 {
 node4____CPAchecker_TMP_0 = send4;
 p4_new = node4____CPAchecker_TMP_0;
 mode4 = 1;
 p1_old = p1_new;
 p1_new = nomsg;
 p2_old = p2_new;
 p2_new = nomsg;
 p3_old = p3_new;
 p3_new = nomsg;
 p4_old = p4_new;
 p4_new = nomsg;
 {
 int check__tmp;
 if ((((((int)st1) + ((int)st2)) + ((int)st3)) + ((int)st4)) <= 1)
 {
 if (((int)r1) >= 4)
 {
 return __return_main;
 }
 else 
 {
 if ((((((int)st1) + ((int)st2)) + ((int)st3)) + ((int)st4)) == 0)
 {
 if (((int)r1) < 4)
 {
 check__tmp = 1;
  __return_689 = check__tmp;
 main__c1 = __return_689;
 {
 _Bool __tmp_13;
 __tmp_13 = main__c1;
 _Bool assert__arg;
 assert__arg = __tmp_13;
 if (assert__arg == 0)
 {
 return __return_main;
 }
 else 
 {
 {
 msg_t node1__m1;
 node1__m1 = nomsg;
 if (!(mode1 == 0))
 {
 if (r1 == 255)
 {
 return __return_main;
 }
 else 
 {
 r1 = r1 + 1;
 node1__m1 = p4_old;
 p4_old = nomsg;
 if (((int)node1__m1) != ((int)nomsg))
 {
 if (((int)node1__m1) > ((int)id1))
 {
 send1 = node1__m1;
 goto label_1592;
 }
 else 
 {
 if (((int)node1__m1) == ((int)id1))
 {
 st1 = 1;
 mode1 = 0;
 {
 msg_t node2__m2;
 node2__m2 = nomsg;
 if (!(mode2 == 0))
 {
 node2__m2 = p1_old;
 p1_old = nomsg;
 if (((int)node2__m2) != ((int)nomsg))
 {
 return __return_main;
 }
 else 
 {
 mode2 = 0;
 label_1619:; 
 {
 msg_t node3__m3;
 node3__m3 = nomsg;
 if (!(mode3 == 0))
 {
 node3__m3 = p2_old;
 p2_old = nomsg;
 if (((int)node3__m3) != ((int)nomsg))
 {
 if (((int)node3__m3) > ((int)id3))
 {
 send3 = node3__m3;
 goto label_1633;
 }
 else 
 {
 if (((int)node3__m3) == ((int)id3))
 {
 st3 = 1;
 mode3 = 0;
 {
 msg_t node4__m4;
 node4__m4 = nomsg;
 if (!(mode4 == 0))
 {
 node4__m4 = p3_old;
 p3_old = nomsg;
 if (((int)node4__m4) != ((int)nomsg))
 {
 if (((int)node4__m4) > ((int)id4))
 {
 send4 = node4__m4;
 goto label_1662;
 }
 else 
 {
 if (((int)node4__m4) == ((int)id4))
 {
 st4 = 1;
 mode4 = 0;
 p1_old = p1_new;
 p1_new = nomsg;
 p2_old = p2_new;
 p2_new = nomsg;
 p3_old = p3_new;
 p3_new = nomsg;
 p4_old = p4_new;
 p4_new = nomsg;
 {
 int check__tmp;
 if ((((((int)st1) + ((int)st2)) + ((int)st3)) + ((int)st4)) <= 1)
 {
 return __return_main;
 }
 else 
 {
 check__tmp = 0;
  __return_1692 = check__tmp;
 main__c1 = __return_1692;
 label_1693:; 
 {
 _Bool __tmp_14;
 __tmp_14 = main__c1;
 _Bool assert__arg;
 assert__arg = __tmp_14;
 if (assert__arg == 0)
 {
 {reach_error();}
 return __return_main;
 }
 else 
 {
 goto label_1259;
 }
 }
 }
 }
 }
 else 
 {
 label_1662:; 
 mode4 = 0;
 goto label_1673;
 }
 }
 }
 else 
 {
 mode4 = 0;
 label_1673:; 
 goto label_1439;
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 else 
 {
 label_1633:; 
 mode3 = 0;
 goto label_1644;
 }
 }
 }
 else 
 {
 mode3 = 0;
 label_1644:; 
 goto label_1206;
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 else 
 {
 send1 = node1__m1;
 label_1592:; 
 mode1 = 0;
 goto label_1603;
 }
 }
 }
 else 
 {
 mode1 = 0;
 label_1603:; 
 goto label_1479;
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 else 
 {
 node4____CPAchecker_TMP_0 = p4_new;
 p4_new = node4____CPAchecker_TMP_0;
 mode4 = 1;
 p1_old = p1_new;
 p1_new = nomsg;
 p2_old = p2_new;
 p2_new = nomsg;
 p3_old = p3_new;
 p3_new = nomsg;
 p4_old = p4_new;
 p4_new = nomsg;
 {
 int check__tmp;
 if ((((((int)st1) + ((int)st2)) + ((int)st3)) + ((int)st4)) <= 1)
 {
 if (((int)r1) >= 4)
 {
 return __return_main;
 }
 else 
 {
 if ((((((int)st1) + ((int)st2)) + ((int)st3)) + ((int)st4)) == 0)
 {
 if (((int)r1) < 4)
 {
 check__tmp = 1;
  __return_675 = check__tmp;
 main__c1 = __return_675;
 {
 _Bool __tmp_15;
 __tmp_15 = main__c1;
 _Bool assert__arg;
 assert__arg = __tmp_15;
 if (assert__arg == 0)
 {
 return __return_main;
 }
 else 
 {
 {
 msg_t node1__m1;
 node1__m1 = nomsg;
 if (!(mode1 == 0))
 {
 if (r1 == 255)
 {
 return __return_main;
 }
 else 
 {
 r1 = r1 + 1;
 node1__m1 = p4_old;
 p4_old = nomsg;
 if (((int)node1__m1) != ((int)nomsg))
 {
 return __return_main;
 }
 else 
 {
 mode1 = 0;
 label_1479:; 
 {
 msg_t node2__m2;
 node2__m2 = nomsg;
 if (!(mode2 == 0))
 {
 node2__m2 = p1_old;
 p1_old = nomsg;
 if (((int)node2__m2) != ((int)nomsg))
 {
 return __return_main;
 }
 else 
 {
 mode2 = 0;
 label_1491:; 
 {
 msg_t node3__m3;
 node3__m3 = nomsg;
 if (!(mode3 == 0))
 {
 node3__m3 = p2_old;
 p2_old = nomsg;
 if (((int)node3__m3) != ((int)nomsg))
 {
 if (((int)node3__m3) > ((int)id3))
 {
 send3 = node3__m3;
 goto label_1505;
 }
 else 
 {
 if (((int)node3__m3) == ((int)id3))
 {
 st3 = 1;
 mode3 = 0;
 {
 msg_t node4__m4;
 node4__m4 = nomsg;
 if (!(mode4 == 0))
 {
 node4__m4 = p3_old;
 p3_old = nomsg;
 if (((int)node4__m4) != ((int)nomsg))
 {
 if (((int)node4__m4) > ((int)id4))
 {
 send4 = node4__m4;
 goto label_1534;
 }
 else 
 {
 if (((int)node4__m4) == ((int)id4))
 {
 st4 = 1;
 mode4 = 0;
 p1_old = p1_new;
 p1_new = nomsg;
 p2_old = p2_new;
 p2_new = nomsg;
 p3_old = p3_new;
 p3_new = nomsg;
 p4_old = p4_new;
 p4_new = nomsg;
 {
 int check__tmp;
 if ((((((int)st1) + ((int)st2)) + ((int)st3)) + ((int)st4)) <= 1)
 {
 return __return_main;
 }
 else 
 {
 check__tmp = 0;
  __return_1564 = check__tmp;
 main__c1 = __return_1564;
 {
 _Bool __tmp_16;
 __tmp_16 = main__c1;
 _Bool assert__arg;
 assert__arg = __tmp_16;
 if (assert__arg == 0)
 {
 {reach_error();}
 return __return_main;
 }
 else 
 {
 goto label_1259;
 }
 }
 }
 }
 }
 else 
 {
 label_1534:; 
 mode4 = 0;
 goto label_1545;
 }
 }
 }
 else 
 {
 mode4 = 0;
 label_1545:; 
 goto label_1328;
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 else 
 {
 label_1505:; 
 mode3 = 0;
 goto label_1516;
 }
 }
 }
 else 
 {
 mode3 = 0;
 label_1516:; 
 goto label_1095;
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 else 
 {
 node3____CPAchecker_TMP_0 = p3_new;
 p3_new = node3____CPAchecker_TMP_0;
 mode3 = 1;
 {
 msg_t node4__m4;
 node4__m4 = nomsg;
 if (!(mode4 == 0))
 {
 return __return_main;
 }
 else 
 {
 int node4____CPAchecker_TMP_0;
 if (send4 != nomsg)
 {
 if (p4_new == nomsg)
 {
 node4____CPAchecker_TMP_0 = send4;
 p4_new = node4____CPAchecker_TMP_0;
 mode4 = 1;
 p1_old = p1_new;
 p1_new = nomsg;
 p2_old = p2_new;
 p2_new = nomsg;
 p3_old = p3_new;
 p3_new = nomsg;
 p4_old = p4_new;
 p4_new = nomsg;
 {
 int check__tmp;
 if ((((((int)st1) + ((int)st2)) + ((int)st3)) + ((int)st4)) <= 1)
 {
 if (((int)r1) >= 4)
 {
 return __return_main;
 }
 else 
 {
 if ((((((int)st1) + ((int)st2)) + ((int)st3)) + ((int)st4)) == 0)
 {
 if (((int)r1) < 4)
 {
 check__tmp = 1;
  __return_661 = check__tmp;
 main__c1 = __return_661;
 {
 _Bool __tmp_17;
 __tmp_17 = main__c1;
 _Bool assert__arg;
 assert__arg = __tmp_17;
 if (assert__arg == 0)
 {
 return __return_main;
 }
 else 
 {
 {
 msg_t node1__m1;
 node1__m1 = nomsg;
 if (!(mode1 == 0))
 {
 if (r1 == 255)
 {
 return __return_main;
 }
 else 
 {
 r1 = r1 + 1;
 node1__m1 = p4_old;
 p4_old = nomsg;
 if (((int)node1__m1) != ((int)nomsg))
 {
 if (((int)node1__m1) > ((int)id1))
 {
 send1 = node1__m1;
 goto label_1371;
 }
 else 
 {
 if (((int)node1__m1) == ((int)id1))
 {
 st1 = 1;
 mode1 = 0;
 {
 msg_t node2__m2;
 node2__m2 = nomsg;
 if (!(mode2 == 0))
 {
 node2__m2 = p1_old;
 p1_old = nomsg;
 if (((int)node2__m2) != ((int)nomsg))
 {
 return __return_main;
 }
 else 
 {
 mode2 = 0;
 label_1398:; 
 {
 msg_t node3__m3;
 node3__m3 = nomsg;
 if (!(mode3 == 0))
 {
 node3__m3 = p2_old;
 p2_old = nomsg;
 if (((int)node3__m3) != ((int)nomsg))
 {
 if (((int)node3__m3) > ((int)id3))
 {
 send3 = node3__m3;
 goto label_1412;
 }
 else 
 {
 if (((int)node3__m3) == ((int)id3))
 {
 st3 = 1;
 mode3 = 0;
 {
 msg_t node4__m4;
 node4__m4 = nomsg;
 if (!(mode4 == 0))
 {
 node4__m4 = p3_old;
 p3_old = nomsg;
 if (((int)node4__m4) != ((int)nomsg))
 {
 return __return_main;
 }
 else 
 {
 mode4 = 0;
 label_1439:; 
 p1_old = p1_new;
 p1_new = nomsg;
 p2_old = p2_new;
 p2_new = nomsg;
 p3_old = p3_new;
 p3_new = nomsg;
 p4_old = p4_new;
 p4_new = nomsg;
 {
 int check__tmp;
 if ((((((int)st1) + ((int)st2)) + ((int)st3)) + ((int)st4)) <= 1)
 {
 return __return_main;
 }
 else 
 {
 check__tmp = 0;
  __return_1454 = check__tmp;
 main__c1 = __return_1454;
 {
 _Bool __tmp_18;
 __tmp_18 = main__c1;
 _Bool assert__arg;
 assert__arg = __tmp_18;
 if (assert__arg == 0)
 {
 {reach_error();}
 return __return_main;
 }
 else 
 {
 goto label_1259;
 }
 }
 }
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 else 
 {
 label_1412:; 
 mode3 = 0;
 goto label_1423;
 }
 }
 }
 else 
 {
 mode3 = 0;
 label_1423:; 
 goto label_1019;
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 else 
 {
 send1 = node1__m1;
 label_1371:; 
 mode1 = 0;
 goto label_1382;
 }
 }
 }
 else 
 {
 mode1 = 0;
 label_1382:; 
 goto label_1275;
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 else 
 {
 node4____CPAchecker_TMP_0 = p4_new;
 p4_new = node4____CPAchecker_TMP_0;
 mode4 = 1;
 p1_old = p1_new;
 p1_new = nomsg;
 p2_old = p2_new;
 p2_new = nomsg;
 p3_old = p3_new;
 p3_new = nomsg;
 p4_old = p4_new;
 p4_new = nomsg;
 {
 int check__tmp;
 if ((((((int)st1) + ((int)st2)) + ((int)st3)) + ((int)st4)) <= 1)
 {
 if (((int)r1) >= 4)
 {
 return __return_main;
 }
 else 
 {
 if ((((((int)st1) + ((int)st2)) + ((int)st3)) + ((int)st4)) == 0)
 {
 if (((int)r1) < 4)
 {
 check__tmp = 1;
  __return_647 = check__tmp;
 main__c1 = __return_647;
 {
 _Bool __tmp_19;
 __tmp_19 = main__c1;
 _Bool assert__arg;
 assert__arg = __tmp_19;
 if (assert__arg == 0)
 {
 return __return_main;
 }
 else 
 {
 {
 msg_t node1__m1;
 node1__m1 = nomsg;
 if (!(mode1 == 0))
 {
 if (r1 == 255)
 {
 return __return_main;
 }
 else 
 {
 r1 = r1 + 1;
 node1__m1 = p4_old;
 p4_old = nomsg;
 if (((int)node1__m1) != ((int)nomsg))
 {
 return __return_main;
 }
 else 
 {
 mode1 = 0;
 label_1275:; 
 {
 msg_t node2__m2;
 node2__m2 = nomsg;
 if (!(mode2 == 0))
 {
 node2__m2 = p1_old;
 p1_old = nomsg;
 if (((int)node2__m2) != ((int)nomsg))
 {
 return __return_main;
 }
 else 
 {
 mode2 = 0;
 label_1287:; 
 {
 msg_t node3__m3;
 node3__m3 = nomsg;
 if (!(mode3 == 0))
 {
 node3__m3 = p2_old;
 p2_old = nomsg;
 if (((int)node3__m3) != ((int)nomsg))
 {
 if (((int)node3__m3) > ((int)id3))
 {
 send3 = node3__m3;
 goto label_1301;
 }
 else 
 {
 if (((int)node3__m3) == ((int)id3))
 {
 st3 = 1;
 mode3 = 0;
 {
 msg_t node4__m4;
 node4__m4 = nomsg;
 if (!(mode4 == 0))
 {
 node4__m4 = p3_old;
 p3_old = nomsg;
 if (((int)node4__m4) != ((int)nomsg))
 {
 return __return_main;
 }
 else 
 {
 mode4 = 0;
 label_1328:; 
 p1_old = p1_new;
 p1_new = nomsg;
 p2_old = p2_new;
 p2_new = nomsg;
 p3_old = p3_new;
 p3_new = nomsg;
 p4_old = p4_new;
 p4_new = nomsg;
 {
 int check__tmp;
 if ((((((int)st1) + ((int)st2)) + ((int)st3)) + ((int)st4)) <= 1)
 {
 if (((int)r1) >= 4)
 {
 return __return_main;
 }
 else 
 {
 if ((((((int)st1) + ((int)st2)) + ((int)st3)) + ((int)st4)) == 0)
 {
 return __return_main;
 }
 else 
 {
 check__tmp = 0;
  __return_1346 = check__tmp;
 main__c1 = __return_1346;
 {
 _Bool __tmp_20;
 __tmp_20 = main__c1;
 _Bool assert__arg;
 assert__arg = __tmp_20;
 if (assert__arg == 0)
 {
 {reach_error();}
 return __return_main;
 }
 else 
 {
 return __return_main;
 }
 }
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 else 
 {
 label_1301:; 
 mode3 = 0;
 goto label_1312;
 }
 }
 }
 else 
 {
 mode3 = 0;
 label_1312:; 
 goto label_922;
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 }
 }
 }
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 else 
 {
 node2____CPAchecker_TMP_0 = p2_new;
 p2_new = node2____CPAchecker_TMP_0;
 mode2 = 1;
 {
 msg_t node3__m3;
 node3__m3 = nomsg;
 if (!(mode3 == 0))
 {
 return __return_main;
 }
 else 
 {
 int node3____CPAchecker_TMP_0;
 if (send3 != nomsg)
 {
 if (p3_new == nomsg)
 {
 node3____CPAchecker_TMP_0 = send3;
 p3_new = node3____CPAchecker_TMP_0;
 mode3 = 1;
 {
 msg_t node4__m4;
 node4__m4 = nomsg;
 if (!(mode4 == 0))
 {
 return __return_main;
 }
 else 
 {
 int node4____CPAchecker_TMP_0;
 if (send4 != nomsg)
 {
 if (p4_new == nomsg)
 {
 node4____CPAchecker_TMP_0 = send4;
 p4_new = node4____CPAchecker_TMP_0;
 mode4 = 1;
 p1_old = p1_new;
 p1_new = nomsg;
 p2_old = p2_new;
 p2_new = nomsg;
 p3_old = p3_new;
 p3_new = nomsg;
 p4_old = p4_new;
 p4_new = nomsg;
 {
 int check__tmp;
 if ((((((int)st1) + ((int)st2)) + ((int)st3)) + ((int)st4)) <= 1)
 {
 if (((int)r1) >= 4)
 {
 return __return_main;
 }
 else 
 {
 if ((((((int)st1) + ((int)st2)) + ((int)st3)) + ((int)st4)) == 0)
 {
 if (((int)r1) < 4)
 {
 check__tmp = 1;
  __return_633 = check__tmp;
 main__c1 = __return_633;
 {
 _Bool __tmp_21;
 __tmp_21 = main__c1;
 _Bool assert__arg;
 assert__arg = __tmp_21;
 if (assert__arg == 0)
 {
 return __return_main;
 }
 else 
 {
 {
 msg_t node1__m1;
 node1__m1 = nomsg;
 if (!(mode1 == 0))
 {
 if (r1 == 255)
 {
 return __return_main;
 }
 else 
 {
 r1 = r1 + 1;
 node1__m1 = p4_old;
 p4_old = nomsg;
 if (((int)node1__m1) != ((int)nomsg))
 {
 if (((int)node1__m1) > ((int)id1))
 {
 send1 = node1__m1;
 goto label_1167;
 }
 else 
 {
 if (((int)node1__m1) == ((int)id1))
 {
 st1 = 1;
 mode1 = 0;
 {
 msg_t node2__m2;
 node2__m2 = nomsg;
 if (!(mode2 == 0))
 {
 node2__m2 = p1_old;
 p1_old = nomsg;
 if (((int)node2__m2) != ((int)nomsg))
 {
 return __return_main;
 }
 else 
 {
 mode2 = 0;
 label_1194:; 
 {
 msg_t node3__m3;
 node3__m3 = nomsg;
 if (!(mode3 == 0))
 {
 node3__m3 = p2_old;
 p2_old = nomsg;
 if (((int)node3__m3) != ((int)nomsg))
 {
 return __return_main;
 }
 else 
 {
 mode3 = 0;
 label_1206:; 
 {
 msg_t node4__m4;
 node4__m4 = nomsg;
 if (!(mode4 == 0))
 {
 node4__m4 = p3_old;
 p3_old = nomsg;
 if (((int)node4__m4) != ((int)nomsg))
 {
 if (((int)node4__m4) > ((int)id4))
 {
 send4 = node4__m4;
 goto label_1220;
 }
 else 
 {
 if (((int)node4__m4) == ((int)id4))
 {
 st4 = 1;
 mode4 = 0;
 p1_old = p1_new;
 p1_new = nomsg;
 p2_old = p2_new;
 p2_new = nomsg;
 p3_old = p3_new;
 p3_new = nomsg;
 p4_old = p4_new;
 p4_new = nomsg;
 {
 int check__tmp;
 if ((((((int)st1) + ((int)st2)) + ((int)st3)) + ((int)st4)) <= 1)
 {
 return __return_main;
 }
 else 
 {
 check__tmp = 0;
  __return_1250 = check__tmp;
 main__c1 = __return_1250;
 {
 _Bool __tmp_22;
 __tmp_22 = main__c1;
 _Bool assert__arg;
 assert__arg = __tmp_22;
 if (assert__arg == 0)
 {
 {reach_error();}
 return __return_main;
 }
 else 
 {
 label_1259:; 
 goto label_2634;
 }
 }
 }
 }
 }
 else 
 {
 label_1220:; 
 mode4 = 0;
 goto label_1231;
 }
 }
 }
 else 
 {
 mode4 = 0;
 label_1231:; 
 goto label_1031;
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 else 
 {
 send1 = node1__m1;
 label_1167:; 
 mode1 = 0;
 goto label_1178;
 }
 }
 }
 else 
 {
 mode1 = 0;
 label_1178:; 
 goto label_1071;
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 else 
 {
 node4____CPAchecker_TMP_0 = p4_new;
 p4_new = node4____CPAchecker_TMP_0;
 mode4 = 1;
 p1_old = p1_new;
 p1_new = nomsg;
 p2_old = p2_new;
 p2_new = nomsg;
 p3_old = p3_new;
 p3_new = nomsg;
 p4_old = p4_new;
 p4_new = nomsg;
 {
 int check__tmp;
 if ((((((int)st1) + ((int)st2)) + ((int)st3)) + ((int)st4)) <= 1)
 {
 if (((int)r1) >= 4)
 {
 return __return_main;
 }
 else 
 {
 if ((((((int)st1) + ((int)st2)) + ((int)st3)) + ((int)st4)) == 0)
 {
 if (((int)r1) < 4)
 {
 check__tmp = 1;
  __return_619 = check__tmp;
 main__c1 = __return_619;
 {
 _Bool __tmp_23;
 __tmp_23 = main__c1;
 _Bool assert__arg;
 assert__arg = __tmp_23;
 if (assert__arg == 0)
 {
 return __return_main;
 }
 else 
 {
 {
 msg_t node1__m1;
 node1__m1 = nomsg;
 if (!(mode1 == 0))
 {
 if (r1 == 255)
 {
 return __return_main;
 }
 else 
 {
 r1 = r1 + 1;
 node1__m1 = p4_old;
 p4_old = nomsg;
 if (((int)node1__m1) != ((int)nomsg))
 {
 return __return_main;
 }
 else 
 {
 mode1 = 0;
 label_1071:; 
 {
 msg_t node2__m2;
 node2__m2 = nomsg;
 if (!(mode2 == 0))
 {
 node2__m2 = p1_old;
 p1_old = nomsg;
 if (((int)node2__m2) != ((int)nomsg))
 {
 return __return_main;
 }
 else 
 {
 mode2 = 0;
 label_1083:; 
 {
 msg_t node3__m3;
 node3__m3 = nomsg;
 if (!(mode3 == 0))
 {
 node3__m3 = p2_old;
 p2_old = nomsg;
 if (((int)node3__m3) != ((int)nomsg))
 {
 return __return_main;
 }
 else 
 {
 mode3 = 0;
 label_1095:; 
 {
 msg_t node4__m4;
 node4__m4 = nomsg;
 if (!(mode4 == 0))
 {
 node4__m4 = p3_old;
 p3_old = nomsg;
 if (((int)node4__m4) != ((int)nomsg))
 {
 if (((int)node4__m4) > ((int)id4))
 {
 send4 = node4__m4;
 goto label_1109;
 }
 else 
 {
 if (((int)node4__m4) == ((int)id4))
 {
 st4 = 1;
 mode4 = 0;
 p1_old = p1_new;
 p1_new = nomsg;
 p2_old = p2_new;
 p2_new = nomsg;
 p3_old = p3_new;
 p3_new = nomsg;
 p4_old = p4_new;
 p4_new = nomsg;
 {
 int check__tmp;
 if ((((((int)st1) + ((int)st2)) + ((int)st3)) + ((int)st4)) <= 1)
 {
 if (((int)r1) >= 4)
 {
 return __return_main;
 }
 else 
 {
 if ((((((int)st1) + ((int)st2)) + ((int)st3)) + ((int)st4)) == 0)
 {
 return __return_main;
 }
 else 
 {
 check__tmp = 0;
  __return_1142 = check__tmp;
 main__c1 = __return_1142;
 {
 _Bool __tmp_24;
 __tmp_24 = main__c1;
 _Bool assert__arg;
 assert__arg = __tmp_24;
 if (assert__arg == 0)
 {
 {reach_error();}
 return __return_main;
 }
 else 
 {
 return __return_main;
 }
 }
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 else 
 {
 label_1109:; 
 mode4 = 0;
 goto label_1120;
 }
 }
 }
 else 
 {
 mode4 = 0;
 label_1120:; 
 goto label_934;
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 else 
 {
 node3____CPAchecker_TMP_0 = p3_new;
 p3_new = node3____CPAchecker_TMP_0;
 mode3 = 1;
 {
 msg_t node4__m4;
 node4__m4 = nomsg;
 if (!(mode4 == 0))
 {
 return __return_main;
 }
 else 
 {
 int node4____CPAchecker_TMP_0;
 if (send4 != nomsg)
 {
 if (p4_new == nomsg)
 {
 node4____CPAchecker_TMP_0 = send4;
 p4_new = node4____CPAchecker_TMP_0;
 mode4 = 1;
 p1_old = p1_new;
 p1_new = nomsg;
 p2_old = p2_new;
 p2_new = nomsg;
 p3_old = p3_new;
 p3_new = nomsg;
 p4_old = p4_new;
 p4_new = nomsg;
 {
 int check__tmp;
 if ((((((int)st1) + ((int)st2)) + ((int)st3)) + ((int)st4)) <= 1)
 {
 if (((int)r1) >= 4)
 {
 return __return_main;
 }
 else 
 {
 if ((((((int)st1) + ((int)st2)) + ((int)st3)) + ((int)st4)) == 0)
 {
 if (((int)r1) < 4)
 {
 check__tmp = 1;
  __return_605 = check__tmp;
 main__c1 = __return_605;
 {
 _Bool __tmp_25;
 __tmp_25 = main__c1;
 _Bool assert__arg;
 assert__arg = __tmp_25;
 if (assert__arg == 0)
 {
 return __return_main;
 }
 else 
 {
 {
 msg_t node1__m1;
 node1__m1 = nomsg;
 if (!(mode1 == 0))
 {
 if (r1 == 255)
 {
 return __return_main;
 }
 else 
 {
 r1 = r1 + 1;
 node1__m1 = p4_old;
 p4_old = nomsg;
 if (((int)node1__m1) != ((int)nomsg))
 {
 if (((int)node1__m1) > ((int)id1))
 {
 send1 = node1__m1;
 goto label_980;
 }
 else 
 {
 if (((int)node1__m1) == ((int)id1))
 {
 st1 = 1;
 mode1 = 0;
 {
 msg_t node2__m2;
 node2__m2 = nomsg;
 if (!(mode2 == 0))
 {
 node2__m2 = p1_old;
 p1_old = nomsg;
 if (((int)node2__m2) != ((int)nomsg))
 {
 return __return_main;
 }
 else 
 {
 mode2 = 0;
 label_1007:; 
 {
 msg_t node3__m3;
 node3__m3 = nomsg;
 if (!(mode3 == 0))
 {
 node3__m3 = p2_old;
 p2_old = nomsg;
 if (((int)node3__m3) != ((int)nomsg))
 {
 return __return_main;
 }
 else 
 {
 mode3 = 0;
 label_1019:; 
 {
 msg_t node4__m4;
 node4__m4 = nomsg;
 if (!(mode4 == 0))
 {
 node4__m4 = p3_old;
 p3_old = nomsg;
 if (((int)node4__m4) != ((int)nomsg))
 {
 return __return_main;
 }
 else 
 {
 mode4 = 0;
 label_1031:; 
 p1_old = p1_new;
 p1_new = nomsg;
 p2_old = p2_new;
 p2_new = nomsg;
 p3_old = p3_new;
 p3_new = nomsg;
 p4_old = p4_new;
 p4_new = nomsg;
 {
 int check__tmp;
 if ((((((int)st1) + ((int)st2)) + ((int)st3)) + ((int)st4)) <= 1)
 {
 if (((int)r1) >= 4)
 {
 return __return_main;
 }
 else 
 {
 if ((((((int)st1) + ((int)st2)) + ((int)st3)) + ((int)st4)) == 0)
 {
 return __return_main;
 }
 else 
 {
 check__tmp = 0;
  __return_1049 = check__tmp;
 main__c1 = __return_1049;
 {
 _Bool __tmp_26;
 __tmp_26 = main__c1;
 _Bool assert__arg;
 assert__arg = __tmp_26;
 if (assert__arg == 0)
 {
 {reach_error();}
 return __return_main;
 }
 else 
 {
 return __return_main;
 }
 }
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 else 
 {
 send1 = node1__m1;
 label_980:; 
 mode1 = 0;
 goto label_991;
 }
 }
 }
 else 
 {
 mode1 = 0;
 label_991:; 
 goto label_898;
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 else 
 {
 node4____CPAchecker_TMP_0 = p4_new;
 p4_new = node4____CPAchecker_TMP_0;
 mode4 = 1;
 p1_old = p1_new;
 p1_new = nomsg;
 p2_old = p2_new;
 p2_new = nomsg;
 p3_old = p3_new;
 p3_new = nomsg;
 p4_old = p4_new;
 p4_new = nomsg;
 {
 int check__tmp;
 if ((((((int)st1) + ((int)st2)) + ((int)st3)) + ((int)st4)) <= 1)
 {
 if (((int)r1) >= 4)
 {
 return __return_main;
 }
 else 
 {
 if ((((((int)st1) + ((int)st2)) + ((int)st3)) + ((int)st4)) == 0)
 {
 if (((int)r1) < 4)
 {
 check__tmp = 1;
  __return_591 = check__tmp;
 main__c1 = __return_591;
 {
 _Bool __tmp_27;
 __tmp_27 = main__c1;
 _Bool assert__arg;
 assert__arg = __tmp_27;
 if (assert__arg == 0)
 {
 return __return_main;
 }
 else 
 {
 {
 msg_t node1__m1;
 node1__m1 = nomsg;
 if (!(mode1 == 0))
 {
 if (r1 == 255)
 {
 return __return_main;
 }
 else 
 {
 r1 = r1 + 1;
 node1__m1 = p4_old;
 p4_old = nomsg;
 if (((int)node1__m1) != ((int)nomsg))
 {
 return __return_main;
 }
 else 
 {
 mode1 = 0;
 label_898:; 
 {
 msg_t node2__m2;
 node2__m2 = nomsg;
 if (!(mode2 == 0))
 {
 node2__m2 = p1_old;
 p1_old = nomsg;
 if (((int)node2__m2) != ((int)nomsg))
 {
 return __return_main;
 }
 else 
 {
 mode2 = 0;
 label_910:; 
 {
 msg_t node3__m3;
 node3__m3 = nomsg;
 if (!(mode3 == 0))
 {
 node3__m3 = p2_old;
 p2_old = nomsg;
 if (((int)node3__m3) != ((int)nomsg))
 {
 return __return_main;
 }
 else 
 {
 mode3 = 0;
 label_922:; 
 {
 msg_t node4__m4;
 node4__m4 = nomsg;
 if (!(mode4 == 0))
 {
 node4__m4 = p3_old;
 p3_old = nomsg;
 if (((int)node4__m4) != ((int)nomsg))
 {
 return __return_main;
 }
 else 
 {
 mode4 = 0;
 label_934:; 
 p1_old = p1_new;
 p1_new = nomsg;
 p2_old = p2_new;
 p2_new = nomsg;
 p3_old = p3_new;
 p3_new = nomsg;
 p4_old = p4_new;
 p4_new = nomsg;
 {
 int check__tmp;
 if ((((((int)st1) + ((int)st2)) + ((int)st3)) + ((int)st4)) <= 1)
 {
 if (((int)r1) >= 4)
 {
 return __return_main;
 }
 else 
 {
 if ((((((int)st1) + ((int)st2)) + ((int)st3)) + ((int)st4)) == 0)
 {
 if (((int)r1) < 4)
 {
 check__tmp = 1;
  __return_955 = check__tmp;
 main__c1 = __return_955;
 {
 _Bool __tmp_28;
 __tmp_28 = main__c1;
 _Bool assert__arg;
 assert__arg = __tmp_28;
 if (assert__arg == 0)
 {
 return __return_main;
 }
 else 
 {
 label_2634:; 
 {
 msg_t node1__m1;
 node1__m1 = nomsg;
 if (!(mode1 == 0))
 {
 if (r1 == 255)
 {
 r1 = 3;
 goto label_2643;
 }
 else 
 {
 label_2643:; 
 r1 = r1 + 1;
 node1__m1 = p4_old;
 p4_old = nomsg;
 if (((int)node1__m1) != ((int)nomsg))
 {
 if (((int)node1__m1) > ((int)id1))
 {
 send1 = node1__m1;
 goto label_2650;
 }
 else 
 {
 if (((int)node1__m1) == ((int)id1))
 {
 st1 = 1;
 goto label_2650;
 }
 else 
 {
 send1 = node1__m1;
 goto label_2650;
 }
 }
 }
 else 
 {
 label_2650:; 
 mode1 = 0;
 label_2662:; 
 {
 msg_t node2__m2;
 node2__m2 = nomsg;
 if (!(mode2 == 0))
 {
 node2__m2 = p1_old;
 p1_old = nomsg;
 if (((int)node2__m2) != ((int)nomsg))
 {
 if (((int)node2__m2) > ((int)id2))
 {
 send2 = node2__m2;
 goto label_2684;
 }
 else 
 {
 if (((int)node2__m2) == ((int)id2))
 {
 st2 = 1;
 goto label_2684;
 }
 else 
 {
 goto label_2684;
 }
 }
 }
 else 
 {
 label_2684:; 
 mode2 = 0;
 label_2695:; 
 {
 msg_t node3__m3;
 node3__m3 = nomsg;
 if (!(mode3 == 0))
 {
 node3__m3 = p2_old;
 p2_old = nomsg;
 if (((int)node3__m3) != ((int)nomsg))
 {
 if (((int)node3__m3) > ((int)id3))
 {
 send3 = node3__m3;
 goto label_2717;
 }
 else 
 {
 if (((int)node3__m3) == ((int)id3))
 {
 st3 = 1;
 goto label_2717;
 }
 else 
 {
 goto label_2717;
 }
 }
 }
 else 
 {
 label_2717:; 
 mode3 = 0;
 label_2728:; 
 {
 msg_t node4__m4;
 node4__m4 = nomsg;
 if (!(mode4 == 0))
 {
 node4__m4 = p3_old;
 p3_old = nomsg;
 if (((int)node4__m4) != ((int)nomsg))
 {
 if (((int)node4__m4) > ((int)id4))
 {
 send4 = node4__m4;
 goto label_2750;
 }
 else 
 {
 if (((int)node4__m4) == ((int)id4))
 {
 st4 = 1;
 goto label_2750;
 }
 else 
 {
 goto label_2750;
 }
 }
 }
 else 
 {
 label_2750:; 
 mode4 = 0;
 label_2761:; 
 p1_old = p1_new;
 p1_new = nomsg;
 p2_old = p2_new;
 p2_new = nomsg;
 p3_old = p3_new;
 p3_new = nomsg;
 p4_old = p4_new;
 p4_new = nomsg;
 goto label_2604;
 }
 }
 else 
 {
 int node4____CPAchecker_TMP_0;
 if (send4 != nomsg)
 {
 if (p4_new == nomsg)
 {
 node4____CPAchecker_TMP_0 = send4;
 goto label_2767;
 }
 else 
 {
 goto label_2764;
 }
 }
 else 
 {
 label_2764:; 
 node4____CPAchecker_TMP_0 = p4_new;
 label_2767:; 
 p4_new = node4____CPAchecker_TMP_0;
 mode4 = 1;
 goto label_2761;
 }
 }
 }
 }
 }
 else 
 {
 int node3____CPAchecker_TMP_0;
 if (send3 != nomsg)
 {
 if (p3_new == nomsg)
 {
 node3____CPAchecker_TMP_0 = send3;
 goto label_2734;
 }
 else 
 {
 goto label_2731;
 }
 }
 else 
 {
 label_2731:; 
 node3____CPAchecker_TMP_0 = p3_new;
 label_2734:; 
 p3_new = node3____CPAchecker_TMP_0;
 mode3 = 1;
 goto label_2728;
 }
 }
 }
 }
 }
 else 
 {
 int node2____CPAchecker_TMP_0;
 if (send2 != nomsg)
 {
 if (p2_new == nomsg)
 {
 node2____CPAchecker_TMP_0 = send2;
 goto label_2701;
 }
 else 
 {
 goto label_2698;
 }
 }
 else 
 {
 label_2698:; 
 node2____CPAchecker_TMP_0 = p2_new;
 label_2701:; 
 p2_new = node2____CPAchecker_TMP_0;
 mode2 = 1;
 goto label_2695;
 }
 }
 }
 }
 }
 }
 else 
 {
 int node1____CPAchecker_TMP_0;
 if (send1 != nomsg)
 {
 if (p1_new == nomsg)
 {
 node1____CPAchecker_TMP_0 = send1;
 goto label_2668;
 }
 else 
 {
 goto label_2665;
 }
 }
 else 
 {
 label_2665:; 
 node1____CPAchecker_TMP_0 = p1_new;
 label_2668:; 
 p1_new = node1____CPAchecker_TMP_0;
 mode1 = 1;
 goto label_2662;
 }
 }
 }
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }
 }
 }
 }
 }
 }
 }
 }
 }
 }
 }
 }
 }
 else 
 {
 return __return_main;
 }
 }
 else 
 {
 return __return_main;
 }
 }
 else 
 {
 return __return_main;
 }
 }
 else 
 {
 return __return_main;
 }
 }
 else 
 {
 return __return_main;
 }
 }
 else 
 {
 return __return_main;
 }
 }
 else 
 {
 return __return_main;
 }
 }
 else 
 {
 return __return_main;
 }
 }
 else 
 {
 return __return_main;
 }
 }
 else 
 {
 return __return_main;
 }
 }
 else 
 {
 return __return_main;
 }
 }
 else 
 {
 return __return_main;
 }
 }
 else 
 {
 return __return_main;
 }
 }
 else 
 {
 return __return_main;
 }
 }
 else 
 {
 return __return_main;
 }
 }
 else 
 {
 return __return_main;
 }
 }
 else 
 {
 return __return_main;
 }
 }
 else 
 {
 return __return_main;
 }
 }
 else 
 {
 return __return_main;
 }
 }
 else 
 {
 return __return_main;
 }
 }
 else 
 {
 return __return_main;
 }
 }
 else 
 {
 return __return_main;
 }
 }
 else 
 {
 return __return_main;
 }
 }
 else 
 {
 return __return_main;
 }
 }
 }