Rev 2 | Blame | Compare with Previous | Last modification | View Log | RSS feed
/***** spin: pangen2.h *****/
/* Copyright (c) 1989-2007 by Lucent Technologies, Bell Laboratories. */
/* All Rights Reserved. This software is for educational purposes only. */
/* No guarantee whatsoever is expressed or implied by the distribution of */
/* this code. Permission is given to distribute this code provided that */
/* this introductory message is not removed and no monies are exchanged. */
/* Software written by Gerard J. Holzmann. For tool documentation see: */
/* http://spinroot.com/ */
/* Send all bug-reports and/or questions to: bugs@spinroot.com */
/* (c) 2007: small additions for V5.0 to support multi-core verifications */
static char *Pre0[] = {
"#ifdef SC",
"#define _FILE_OFFSET_BITS 64", /* to allow file sizes greater than 2Gb */
"#endif",
"#include <stdio.h>",
"#include <signal.h>",
"#include <stdlib.h>",
"#include <stdarg.h>",
"#include <string.h>",
"#include <ctype.h>",
"#include <errno.h>",
"#if defined(WIN32) || defined(WIN64)",
"#include <time.h>",
"#else",
"#include <unistd.h>",
"#include <sys/times.h>",
"#endif",
"#include <sys/types.h>", /* defines off_t */
"#include <sys/stat.h>",
"#include <fcntl.h>",
"#define Offsetof(X, Y) ((unsigned long)(&(((X *)0)->Y)))",
"#ifndef max",
"#define max(a,b) (((a)<(b)) ? (b) : (a))",
"#endif",
"#ifndef PRINTF",
"int Printf(const char *fmt, ...); /* prototype only */",
"#endif",
0,
};
static char *Preamble[] = {
"#ifdef RANDOMIZE",
" #define T_RAND RANDOMIZE",
"#endif",
"#ifdef CNTRSTACK",
" #define onstack_now() (LL[trpt->j6] && LL[trpt->j7])",
" #define onstack_put() LL[trpt->j6]++; LL[trpt->j7]++",
" #define onstack_zap() LL[trpt->j6]--; LL[trpt->j7]--",
"#endif",
"#if !defined(SAFETY) && !defined(NOCOMP)",
/*
* V_A identifies states in the current statespace
* A_V identifies states in the 'other' statespace
* S_A remembers how many leading bytes in the sv
* are used for these markers + fairness bits
*/
" #define V_A (((now._a_t&1)?2:1) << (now._a_t&2))",
" #define A_V (((now._a_t&1)?1:2) << (now._a_t&2))",
" int S_A = 0;",
"#else",
" #define V_A 0",
" #define A_V 0",
" #define S_A 0",
"#endif",
"#ifdef MA",
"#undef onstack_now",
"#undef onstack_put",
"#undef onstack_zap",
"#define onstack_put() ;",
"#define onstack_zap() gstore((char *) &now, vsize, 4)",
"#else",
"#if defined(FULLSTACK) && !defined(BITSTATE)",
"#define onstack_put() trpt->ostate = Lstate",
"#define onstack_zap() { \\",
" if (trpt->ostate) \\",
" trpt->ostate->tagged = \\",
" (S_A)? (trpt->ostate->tagged&~V_A) : 0; \\",
" }",
"#endif",
"#endif",
"#ifndef NO_V_PROVISO",
"#define V_PROVISO",
"#endif",
"#if !defined(NO_RESIZE) && !defined(AUTO_RESIZE) && !defined(BITSTATE) && !defined(SPACE) && NCORE==1",
" #define AUTO_RESIZE",
"#endif",
"",
"struct H_el {",
" struct H_el *nxt;",
"#ifdef FULLSTACK",
" unsigned int tagged;",
" #if defined(BITSTATE) && !defined(NOREDUCE) && !defined(SAFETY)",
" unsigned int proviso;", /* uses just 1 bit 0/1 */
" #endif",
"#endif",
"#if defined(CHECK) || (defined(COLLAPSE) && !defined(FULLSTACK))",
" unsigned long st_id;",
"#endif",
"#if !defined(SAFETY) || defined(REACH)",
" unsigned int D;",
"#endif",
"#ifdef BCS",
" #ifndef CONSERVATIVE",
" #define CONSERVATIVE 1 /* good for up to 8 processes */",
" #endif",
" #ifdef CONSERVATIVE",
" #if CONSERVATIVE <= 0 || CONSERVATIVE>32",
" #error sensible values for CONSERVATIVE are 1..32 (256/8 = 32)",
" #endif",
" uchar ctx_pid[CONSERVATIVE];", /* pids setting lowest value */
" #endif",
" uchar ctx_low;", /* lowest nr of context switches seen so far */
"#endif",
"#if NCORE>1",
" /* could cost 1 extra word: 4 bytes if 32-bit and 8 bytes if 64-bit */",
" #ifdef V_PROVISO",
" uchar cpu_id; /* id of cpu that created the state */",
" #endif",
"#endif",
"#ifdef COLLAPSE",
" #if VECTORSZ<65536",
" unsigned short ln;", /* length of vector */
" #else",
" unsigned long ln;", /* length of vector */
" #endif",
"#endif",
"#if defined(AUTO_RESIZE) && !defined(BITSTATE)",
" unsigned long m_K1;",
"#endif",
" unsigned long state;",
"} **H_tab, **S_Tab;\n",
"typedef struct Trail {",
" int st; /* current state */",
" int o_tt;",
" uchar pr; /* process id */",
" uchar tau; /* 8 bit-flags */",
" uchar o_pm; /* 8 more bit-flags */",
"#if 0",
" Meaning of bit-flags:",
" tau&1 -> timeout enabled",
" tau&2 -> request to enable timeout 1 level up (in claim)",
" tau&4 -> current transition is a claim move",
" tau&8 -> current transition is an atomic move",
" tau&16 -> last move was truncated on stack",
" tau&32 -> current transition is a preselected move",
" tau&64 -> at least one next state is not on the stack",
" tau&128 -> current transition is a stutter move",
" o_pm&1 -> the current pid moved -- implements else",
" o_pm&2 -> this is an acceptance state",
" o_pm&4 -> this is a progress state",
" o_pm&8 -> fairness alg rule 1 undo mark",
" o_pm&16 -> fairness alg rule 3 undo mark",
" o_pm&32 -> fairness alg rule 2 undo mark",
" o_pm&64 -> the current proc applied rule2",
" o_pm&128 -> a fairness, dummy move - all procs blocked",
"#endif",
"#ifdef NSUCC",
" uchar n_succ; /* nr of successor states */",
"#endif",
"#if defined(FULLSTACK) && defined(MA) && !defined(BFS)",
" uchar proviso;",
"#endif",
"#ifndef BFS",
" uchar o_n, o_ot; /* to save locals */",
"#endif",
" uchar o_m;",
"#ifdef EVENT_TRACE",
" #if nstates_event<256",
" uchar o_event;",
" #else",
" unsigned short o_event;",
" #endif",
"#endif",
"#ifndef BFS",
" short o_To;",
" #ifdef T_RAND",
" short oo_i;",
" #endif",
"#endif",
"#if defined(HAS_UNLESS) && !defined(BFS)",
" int e_state; /* if escape trans - state of origin */",
"#endif",
"#if (defined(FULLSTACK) && !defined(MA)) || defined(BFS) || (NCORE>1)",
" struct H_el *ostate; /* pointer to stored state */",
"#endif",
/* CNTRSTACK when !NOREDUCE && BITSTATE && SAFETY, uses LL[] */
"#if defined(CNTRSTACK) && !defined(BFS)",
" long j6, j7;",
"#endif",
" Trans *o_t;", /* transition fct, next state */
"#if !defined(BFS) && !defined(TRIX_ORIG)",
" char *p_bup;",
" char *q_bup;",
"#endif",
"#ifdef BCS",
" unsigned short sched_limit;",
" unsigned char bcs; /* phase 1 or 2, or forced 4 */",
" unsigned char b_pno; /* preferred pid */",
"#endif",
"#ifdef P_RAND", /* process scheduling randomization */
" unsigned char p_left; /* nr of procs left to explore */",
" short p_skip; /* to find starting point in list */",
"#endif",
"#ifdef HAS_SORTED",
" short ipt;", /* insertion slot in q */
"#endif",
" union {",
" int oval;", /* single backup value of variable */
" int *ovals;", /* ptr to multiple values */
" } bup;",
"} Trail;",
"Trail *trail, *trpt;",
"FILE *efd;",
"uchar *this;",
"long maxdepth=10000;",
"long omaxdepth=10000;",
"#ifdef BCS",
" /* bitflags in trpt->bcs */",
" #define B_PHASE1 1",
" #define B_PHASE2 2",
" #define B_FORCED 4",
"int sched_max = 0;",
"#endif",
"#ifdef PERMUTED",
" uchar permuted = 1;",
"#else",
" uchar permuted = 0;",
"#endif",
"double quota; /* time limit */",
"#if NCORE>1",
"long z_handoff = -1;",
"#endif",
"#ifdef SC", /* stack cycling */
"char *stackfile;",
"#endif",
"uchar *SS, *LL;",
"uchar HASH_NR = 0;",
"",
"double memcnt = (double) 0;",
"double memlim = (double) (1<<30); /* 1 GB */",
"#if NCORE>1",
"double mem_reserved = (double) 0;",
"#endif",
"",
"/* for emalloc: */",
"static char *have;",
"static long left = 0L;",
"static double fragment = (double) 0;",
"static unsigned long grow;",
"",
#if 1
"unsigned int HASH_CONST[] = {",
" /* asuming 4 bytes per int */",
" 0x100d4e63, 0x0fc22f87,",
" 0x3ff0c3ff, 0x38e84cd7,",
" 0x02b148e9, 0x98b2e49d,",
" 0xb616d379, 0xa5247fd9,",
" 0xbae92a15, 0xb91c8bc5,",
" 0x8e5880f3, 0xacd7c069,",
" 0xb4c44bb3, 0x2ead1fb7,",
" 0x8e428171, 0xdbebd459,",
" 0x00400007, 0x04c11db7,",
" 0x828ae611, 0x6cb25933,",
" 0x86cdd651, 0x9e8f5f21,",
" 0xd5f8d8e7, 0x9c4e956f,",
" 0xb5cf2c71, 0x2e805a6d,",
" 0x33fc3a55, 0xaf203ed1,",
" 0xe31f5909, 0x5276db35,",
" 0x0c565ef7, 0x273d1aa5,",
" 0x8923b1dd, 0xa9acaac5,",
" 0xd1f69207, 0xedfd944b,",
" 0x9a68e46b, 0x5355e13f,",
" 0x7eeb44f9, 0x932beea9,",
" 0x330c4cd3, 0x87f34e5f,",
" 0x1b5851b7, 0xb9ca6447,",
" 0x58f96a8f, 0x1b3b5307,",
" 0x31c387b3, 0xf35f0f35,",
" 0xa0acc4df, 0xf3140303,",
" 0x2446245d, 0xe4b8f4ef,",
" 0x5c007383, 0x68e648af,",
" 0x1814fba7, 0xcdf731b5,",
" 0xd09ccb4b, 0xb92d0eff,",
" 0xcc3c6b67, 0xd3af6a57,",
" 0xf44fc3f5, 0x5bb67623,",
" 0xaeb9c953, 0x5e0ac739,",
" 0x3a7fda09, 0x5edf39eb,",
" 0x661eefd9, 0x6423f0d1,",
" 0x910fe413, 0x9ec92297,",
" 0x4bd8159d, 0xa7b16ee1,",
" 0x89d484e9, 0x7f305cb3,",
" 0xc5f303e7, 0x415deeef,",
" 0x09986f89, 0x7e9c4117,",
" 0x0b7cbedb, 0xf9ed7561,",
" 0x7a20ac99, 0xf05adef3,",
" 0x5893d75b, 0x44d73327,",
" 0xb583c873, 0x324d2145,",
" 0x7fa3829b, 0xe4b47a23,",
" 0xe256d94f, 0xb1fd8959,",
" 0xe561a321, 0x1435ac09,",
" 0xdd62408b, 0x02ec0bcb,",
" 0x5469b785, 0x2f4f50bb,",
" 0x20f19395, 0xf96ba085,",
" 0x2381f937, 0x768e2a11,",
" 0",
"};",
#else
"unsigned int HASH_CONST[] = {",
" /* asuming 4 bytes per int */",
" 0x88888EEF, 0x00400007,",
" 0x04c11db7, 0x100d4e63,",
" 0x0fc22f87, 0x3ff0c3ff,",
" 0x38e84cd7, 0x02b148e9,",
" 0x98b2e49d, 0xb616d379,",
" 0xa5247fd9, 0xbae92a15,",
" 0xb91c8bc5, 0x8e5880f3,",
" 0xacd7c069, 0xb4c44bb3,",
" 0x2ead1fb7, 0x8e428171,",
" 0xdbebd459, 0x828ae611,",
" 0x6cb25933, 0x86cdd651,",
" 0x9e8f5f21, 0xd5f8d8e7,",
" 0x9c4e956f, 0xb5cf2c71,",
" 0x2e805a6d, 0x33fc3a55,",
" 0xaf203ed1, 0xe31f5909,",
" 0x5276db35, 0x0c565ef7,",
" 0x273d1aa5, 0x8923b1dd,",
" 0",
"};",
#endif
"#if NCORE>1",
"extern int core_id;",
"#endif",
"long mreached=0;",
"int done=0, errors=0, Nrun=1;",
"int c_init_done=0;",
"char *c_stack_start = (char *) 0;",
"double nstates=0, nlinks=0, truncs=0, truncs2=0;",
"double nlost=0, nShadow=0, hcmp=0, ngrabs=0;",
"#ifdef PUTPID",
"char *progname;",
"#endif",
"#if defined(ZAPH) && defined(BITSTATE)",
"double zstates = 0;",
"#endif",
"int c_init_run;",
"#ifdef BFS",
"double midrv=0, failedrv=0, revrv=0;",
"#endif",
"unsigned long nr_states=0; /* nodes in DFA */",
"long Fa=0, Fh=0, Zh=0, Zn=0;",
"long PUT=0, PROBE=0, ZAPS=0;",
"long Ccheck=0, Cholds=0;",
"int a_cycles=0, upto=1, strict=0, verbose = 0, signoff = 0;",
"#ifdef HAS_CODE",
"int gui = 0, coltrace = 0, readtrail = 0;",
"int whichtrail = 0, whichclaim = -1, onlyproc = -1, silent = 0;",
"char *claimname;",
"#endif",
"int state_tables=0, fairness=0, no_rck=0, Nr_Trails=0, dodot=0;",
"char simvals[128];",
"#ifndef INLINE",
"int TstOnly=0;",
"#endif",
"unsigned long mask, nmask;",
"#ifdef BITSTATE",
"int ssize=23; /* 1 Mb */",
"#else",
"int ssize=19; /* 512K slots */",
"#endif",
"int hmax=0, svmax=0, smax=0;",
"int Maxbody=0, XX;",
"uchar *noptr, *noqptr; /* used by Pptr(x) and Qptr(x) */",
"#ifdef VAR_RANGES",
"void logval(char *, int);",
"void dumpranges(void);",
"#endif",
"#ifdef MA",
"#define INLINE_REV",
"extern void dfa_init(unsigned short);",
"extern int dfa_member(unsigned long);",
"extern int dfa_store(uchar *);",
"unsigned int maxgs = 0;",
"#endif",
"",
"#ifdef ALIGNED",
" State comp_now __attribute__ ((aligned (8)));",
" /* gcc 64-bit aligned for Itanium2 systems */",
" /* MAJOR runtime penalty if not used on those systems */",
"#else",
" State comp_now; /* compressed state vector */",
"#endif",
"",
"State comp_msk;",
"uchar *Mask = (uchar *) &comp_msk;",
"#ifdef COLLAPSE",
"State comp_tmp;",
"static char *scratch = (char *) &comp_tmp;",
"#endif",
"_Stack *stack; /* for queues, processes */",
"Svtack *svtack; /* for old state vectors */",
"#ifdef BITSTATE",
"static unsigned int hfns = 3; /* new default */",
"#endif",
"static unsigned long j1_spin; /* 5.2.1: avoid nameclash with math.h */",
"static unsigned long K1, K2;",
"static unsigned long j2, j3, j4;",
"#ifdef BITSTATE",
"static long udmem;",
"#endif",
"static long A_depth = 0;",
"long depth = 0;",
/* depth: not static to support -S2, but possible clash with embedded code */
"#if NCORE>1",
"long nr_handoffs = 0;",
"#endif",
"static uchar warned = 0, iterative = 0, exclusive = 0, like_java = 0, every_error = 0;",
"static uchar noasserts = 0, noends = 0, bounded = 0;",
"#if defined(T_RAND) || defined(P_RAND) || defined(RANDSTOR)",
"unsigned int s_rand = 123; /* default seed */",
"#endif",
"#if SYNC>0 && ASYNC==0",
"void set_recvs(void);",
"int no_recvs(int);",
"#endif",
"#if SYNC",
"#define IfNotBlocked if (boq != -1) continue;",
"#define UnBlock boq = -1",
"#else",
"#define IfNotBlocked /* cannot block */",
"#define UnBlock /* don't bother */",
"#endif\n",
"#ifdef BITSTATE",
"int (*bstore)(char *, int);",
"int bstore_reg(char *, int);",
"int bstore_mod(char *, int);",
"#endif",
"void active_procs(void);",
"void cleanup(void);",
"void do_the_search(void);",
"void find_shorter(int);",
"void iniglobals(int);",
"void stopped(int);",
"void wrapup(void);",
"int *grab_ints(int);",
"void ungrab_ints(int *, int);",
0,
};
static char *Tail[] = {
"Trans *",
"settr( int t_id, int a, int b, int c, int d,",
" char *t, int g, int tpe0, int tpe1)",
"{ Trans *tmp = (Trans *) emalloc(sizeof(Trans));\n",
" tmp->atom = a&(6|32); /* only (2|8|32) have meaning */",
" if (!g) tmp->atom |= 8; /* no global references */",
" tmp->st = b;",
" tmp->tpe[0] = tpe0;",
" tmp->tpe[1] = tpe1;",
" tmp->tp = t;",
" tmp->t_id = t_id;",
" tmp->forw = c;",
" tmp->back = d;",
" return tmp;",
"}\n",
"Trans *",
"cpytr(Trans *a)",
"{ Trans *tmp = (Trans *) emalloc(sizeof(Trans));\n",
" int i;",
" tmp->atom = a->atom;",
" tmp->st = a->st;",
"#ifdef HAS_UNLESS",
" tmp->e_trans = a->e_trans;",
" for (i = 0; i < HAS_UNLESS; i++)",
" tmp->escp[i] = a->escp[i];",
"#endif",
" tmp->tpe[0] = a->tpe[0];",
" tmp->tpe[1] = a->tpe[1];",
" for (i = 0; i < 6; i++)",
" { tmp->qu[i] = a->qu[i];",
" tmp->ty[i] = a->ty[i];",
" }",
" tmp->tp = (char *) emalloc(strlen(a->tp)+1);",
" strcpy(tmp->tp, a->tp);",
" tmp->t_id = a->t_id;",
" tmp->forw = a->forw;",
" tmp->back = a->back;",
" return tmp;",
"}\n",
"#ifndef NOREDUCE",
"int",
"srinc_set(int n)",
"{ if (n <= 2) return LOCAL;",
" if (n <= 2+ DELTA) return Q_FULL_F; /* 's' or nfull */",
" if (n <= 2+2*DELTA) return Q_EMPT_F; /* 'r' or nempty */",
" if (n <= 2+3*DELTA) return Q_EMPT_T; /* empty */",
" if (n <= 2+4*DELTA) return Q_FULL_T; /* full */",
" if (n == 5*DELTA) return GLOBAL;",
" if (n == 6*DELTA) return TIMEOUT_F;",
" if (n == 7*DELTA) return ALPHA_F;",
" Uerror(\"cannot happen srinc_class\");",
" return BAD;",
"}",
"int",
"srunc(int n, int m)",
"{ switch(m) {",
" case Q_FULL_F: return n-2;",
" case Q_EMPT_F: return n-2-DELTA;",
" case Q_EMPT_T: return n-2-2*DELTA;",
" case Q_FULL_T: return n-2-3*DELTA;",
" case ALPHA_F:",
" case TIMEOUT_F: return 257; /* non-zero, and > MAXQ */",
" }",
" Uerror(\"cannot happen srunc\");",
" return 0;",
"}",
"#endif",
"int cnt;",
"#ifdef HAS_UNLESS",
"int",
"isthere(Trans *a, int b)", /* is b already in a's list? */
"{ Trans *t;",
" for (t = a; t; t = t->nxt)",
" if (t->t_id == b)",
" return 1;",
" return 0;",
"}",
"#endif",
"#ifndef NOREDUCE",
"int",
"mark_safety(Trans *t) /* for conditional safety */",
"{ int g = 0, i, j, k;",
"",
" if (!t) return 0;",
" if (t->qu[0])",
" return (t->qu[1])?2:1; /* marked */",
"",
" for (i = 0; i < 2; i++)",
" { j = srinc_set(t->tpe[i]);",
" if (j >= GLOBAL && j != ALPHA_F)",
" return -1;",
" if (j != LOCAL)",
" { k = srunc(t->tpe[i], j);",
" if (g == 0",
" || t->qu[0] != k",
" || t->ty[0] != j)",
" { t->qu[g] = k;",
" t->ty[g] = j;",
" g++;",
" } } }",
" return g;",
"}",
"#endif",
"void",
"retrans(int n, int m, int is, short srcln[], uchar reach[], uchar lstate[])",
" /* process n, with m states, is=initial state */",
"{ Trans *T0, *T1, *T2, *T3, *T4, *T5;",
" int i, k;",
"#ifndef NOREDUCE",
" int g, h, j, aa;",
"#endif",
"#ifdef HAS_UNLESS",
" int p;",
"#endif",
" if (state_tables >= 4)",
" { printf(\"STEP 1 %%s\\n\", ",
" procname[n]);",
" for (i = 1; i < m; i++)",
" for (T0 = trans[n][i]; T0; T0 = T0->nxt)",
" crack(n, i, T0, srcln);",
" return;",
" }",
" do {",
" for (i = 1, cnt = 0; i < m; i++)",
" { T2 = trans[n][i];",
" T1 = T2?T2->nxt:(Trans *)0;",
"/* prescan: */ for (T0 = T1; T0; T0 = T0->nxt)",
"/* choice in choice */ { if (T0->st && trans[n][T0->st]",
" && trans[n][T0->st]->nxt)",
" break;",
" }",
"#if 0",
" if (T0)",
" printf(\"\\tstate %%d / %%d: choice in choice\\n\",",
" i, T0->st);",
"#endif",
" if (T0)",
" for (T0 = T1; T0; T0 = T0->nxt)",
" { T3 = trans[n][T0->st];",
" if (!T3->nxt)",
" { T2->nxt = cpytr(T0);",
" T2 = T2->nxt;",
" imed(T2, T0->st, n, i);",
" continue;",
" }",
" do { T3 = T3->nxt;",
" T2->nxt = cpytr(T3);",
" T2 = T2->nxt;",
" imed(T2, T0->st, n, i);",
" } while (T3->nxt);",
" cnt++;",
" }",
" }",
" } while (cnt);",
" if (state_tables >= 3)",
" { printf(\"STEP 2 %%s\\n\", ",
" procname[n]);",
" for (i = 1; i < m; i++)",
" for (T0 = trans[n][i]; T0; T0 = T0->nxt)",
" crack(n, i, T0, srcln);",
" return;",
" }",
" for (i = 1; i < m; i++)",
" { if (trans[n][i] && trans[n][i]->nxt) /* optimize */",
" { T1 = trans[n][i]->nxt;",
"#if 0",
" printf(\"\\t\\tpull %%d (%%d) to %%d\\n\",",
" T1->st, T1->forw, i);",
"#endif", /* pull linenumber ref as well: */
" srcln[i] = srcln[T1->st]; /* Oyvind Teig, 5.2.0 */",
"",
" if (!trans[n][T1->st]) continue;",
" T0 = cpytr(trans[n][T1->st]);",
" trans[n][i] = T0;",
" reach[T1->st] = 1;",
" imed(T0, T1->st, n, i);",
" for (T1 = T1->nxt; T1; T1 = T1->nxt)",
" {",
"#if 0",
" printf(\"\\t\\tpull %%d (%%d) to %%d\\n\",",
" T1->st, T1->forw, i);",
"#endif",
" /* srcln[i] = srcln[T1->st]; gh: not useful */",
" if (!trans[n][T1->st]) continue;",
" T0->nxt = cpytr(trans[n][T1->st]);",
" T0 = T0->nxt;",
" reach[T1->st] = 1;",
" imed(T0, T1->st, n, i);",
" } } }",
" if (state_tables >= 2)",
" { printf(\"STEP 3 %%s\\n\", ",
" procname[n]);",
" for (i = 1; i < m; i++)",
" for (T0 = trans[n][i]; T0; T0 = T0->nxt)",
" crack(n, i, T0, srcln);",
" return;",
" }",
"#ifdef HAS_UNLESS",
" for (i = 1; i < m; i++)",
" { if (!trans[n][i]) continue;",
" /* check for each state i if an",
" * escape to some state p is defined",
" * if so, copy and mark p's transitions",
" * and prepend them to the transition-",
" * list of state i",
" */",
" if (!like_java) /* the default */",
" { for (T0 = trans[n][i]; T0; T0 = T0->nxt)",
" for (k = HAS_UNLESS-1; k >= 0; k--)",
" { if (p = T0->escp[k])",
" for (T1 = trans[n][p]; T1; T1 = T1->nxt)",
" { if (isthere(trans[n][i], T1->t_id))",
" continue;",
" T2 = cpytr(T1);",
" T2->e_trans = p;",
" T2->nxt = trans[n][i];",
" trans[n][i] = T2;",
" } }",
" } else /* outermost unless checked first */",
" { T4 = T3 = (Trans *) 0;",
" for (T0 = trans[n][i]; T0; T0 = T0->nxt)",
" for (k = HAS_UNLESS-1; k >= 0; k--)",
" { if (p = T0->escp[k])",
" for (T1 = trans[n][p]; T1; T1 = T1->nxt)",
" { if (isthere(trans[n][i], T1->t_id))",
" continue;",
" T2 = cpytr(T1);",
" T2->nxt = (Trans *) 0;",
" T2->e_trans = p;",
" if (T3) T3->nxt = T2;",
" else T4 = T2;",
" T3 = T2;",
" } }",
" if (T4)",
" { T3->nxt = trans[n][i];",
" trans[n][i] = T4;",
" }",
" }",
" }",
"#endif",
"#ifndef NOREDUCE",
" for (i = 1; i < m; i++)",
" { if (a_cycles)",
" { /* moves through these states are visible */",
" #if PROG_LAB>0 && defined(HAS_NP)",
" if (progstate[n][i])",
" goto degrade;",
" for (T1 = trans[n][i]; T1; T1 = T1->nxt)",
" if (progstate[n][T1->st])",
" goto degrade;",
" #endif",
" if (accpstate[n][i] || visstate[n][i])",
" goto degrade;",
" for (T1 = trans[n][i]; T1; T1 = T1->nxt)",
" if (accpstate[n][T1->st])",
" goto degrade;",
" }",
" T1 = trans[n][i];",
" if (!T1) continue;",
" g = mark_safety(T1); /* V3.3.1 */",
" if (g < 0) goto degrade; /* global */",
" /* check if mixing of guards preserves reduction */",
" if (T1->nxt)",
" { k = 0;",
" for (T0 = T1; T0; T0 = T0->nxt)",
" { if (!(T0->atom&8))",
" goto degrade;",
" for (aa = 0; aa < 2; aa++)",
" { j = srinc_set(T0->tpe[aa]);",
" if (j >= GLOBAL && j != ALPHA_F)",
" goto degrade;",
" if (T0->tpe[aa]",
" && T0->tpe[aa]",
" != T1->tpe[0])",
" k = 1;",
" } }",
" /* g = 0; V3.3.1 */",
" if (k) /* non-uniform selection */",
" for (T0 = T1; T0; T0 = T0->nxt)",
" for (aa = 0; aa < 2; aa++)",
" { j = srinc_set(T0->tpe[aa]);",
" if (j != LOCAL)",
" { k = srunc(T0->tpe[aa], j);",
" for (h = 0; h < 6; h++)",
" if (T1->qu[h] == k",
" && T1->ty[h] == j)",
" break;",
" if (h >= 6)",
" { T1->qu[g%%6] = k;",
" T1->ty[g%%6] = j;",
" g++;",
" } } }",
" if (g > 6)",
" { T1->qu[0] = 0; /* turn it off */",
" printf(\"pan: warning, line %%d, \",",
" srcln[i]);",
" printf(\"too many stmnt types (%%d)\",",
" g);",
" printf(\" in selection\\n\");",
" goto degrade;",
" }",
" }",
" /* mark all options global if >=1 is global */",
" for (T1 = trans[n][i]; T1; T1 = T1->nxt)",
" if (!(T1->atom&8)) break;",
" if (T1)",
"degrade: for (T1 = trans[n][i]; T1; T1 = T1->nxt)",
" T1->atom &= ~8; /* mark as unsafe */",
" /* can only mix 'r's or 's's if on same chan */",
" /* and not mixed with other local operations */",
" T1 = trans[n][i];",
" if (!T1 || T1->qu[0]) continue;",
" j = T1->tpe[0];",
" if (T1->nxt && T1->atom&8)",
" { if (j == 5*DELTA)",
" { printf(\"warning: line %%d \", srcln[i]);",
" printf(\"mixed condition \");",
" printf(\"(defeats reduction)\\n\");",
" goto degrade;",
" }",
" for (T0 = T1; T0; T0 = T0->nxt)",
" for (aa = 0; aa < 2; aa++)",
" if (T0->tpe[aa] && T0->tpe[aa] != j)",
" { printf(\"warning: line %%d \", srcln[i]);",
" printf(\"[%%d-%%d] mixed %%stion \",",
" T0->tpe[aa], j, ",
" (j==5*DELTA)?\"condi\":\"selec\");",
" printf(\"(defeats reduction)\\n\");",
" printf(\" '%%s' <-> '%%s'\\n\",",
" T1->tp, T0->tp);",
" goto degrade;",
" } }",
" }",
"#endif",
" for (i = 1; i < m; i++)", /* R */
" { T2 = trans[n][i];",
" if (!T2",
" || T2->nxt",
" || strncmp(T2->tp, \".(goto)\", 7)",
" || !stopstate[n][i])",
" continue;",
" stopstate[n][T2->st] = 1;",
" }",
" if (state_tables && !verbose)",
" { if (dodot)",
" { char buf[256], *q = buf, *p = procname[n];",
" while (*p != '\\0')",
" { if (*p != ':')",
" { *q++ = *p;",
" }",
" p++;",
" }",
" *q = '\\0';",
" printf(\"digraph \");",
" switch (Btypes[n]) {",
" case I_PROC: printf(\"init {\\n\"); break;",
" case N_CLAIM: printf(\"claim_%%s {\\n\", buf); break;",
" case E_TRACE: printf(\"notrace {\\n\"); break;",
" case N_TRACE: printf(\"trace {\\n\"); break;",
" default: printf(\"p_%%s {\\n\", buf); break;",
" }",
" printf(\"size=\\\"8,10\\\";\\n\");",
" printf(\" GT [shape=box,style=dotted,label=\\\"%%s\\\"];\\n\", buf);",
" } else",
" { switch (Btypes[n]) {",
" case I_PROC: printf(\"init\\n\"); break;",
" case N_CLAIM: printf(\"claim %%s\\n\", procname[n]); break;",
" case E_TRACE: printf(\"notrace assertion\\n\"); break;",
" case N_TRACE: printf(\"trace assertion\\n\"); break;",
" default: printf(\"proctype %%s\\n\", procname[n]); break;",
" } }",
" for (i = 1; i < m; i++)",
" { reach[i] = 1;",
" }",
" tagtable(n, m, is, srcln, reach);",
" if (dodot) printf(\"}\\n\");",
" } else",
" for (i = 1; i < m; i++)",
" { int nrelse;",
" if (Btypes[n] != N_CLAIM)",
" { for (T0 = trans[n][i]; T0; T0 = T0->nxt)",
" { if (T0->st == i",
" && strcmp(T0->tp, \"(1)\") == 0)",
" { printf(\"error: proctype '%%s' \",",
" procname[n]);",
" printf(\"line %%d, state %%d: has un\",",
" srcln[i], i);",
" printf(\"conditional self-loop\\n\");",
" pan_exit(1);",
" } } }",
" nrelse = 0;",
" for (T0 = trans[n][i]; T0; T0 = T0->nxt)",
" { if (strcmp(T0->tp, \"else\") == 0)",
" nrelse++;",
" }",
" if (nrelse > 1)",
" { printf(\"error: proctype '%%s' state\",",
" procname[n]);",
" printf(\" %%d, inherits %%d\", i, nrelse);",
" printf(\" 'else' stmnts\\n\");",
" pan_exit(1);",
" } }",
"#ifndef LOOPSTATE",
" if (state_tables)",
"#endif",
" do_dfs(n, m, is, srcln, reach, lstate);",
"#ifdef T_REVERSE",
" /* process n, with m states, is=initial state -- reverse list */",
" if (!state_tables && Btypes[n] != N_CLAIM)",
" { for (i = 1; i < m; i++)", /* for each state */
" { Trans *Tx = (Trans *) 0; /* list of escapes */",
" Trans *Ty = (Trans *) 0; /* its tail element */",
" T1 = (Trans *) 0; /* reversed list */",
" T2 = (Trans *) 0; /* its tail */",
" T3 = (Trans *) 0; /* remembers possible 'else' */",
"",
" /* find unless-escapes, they should go first */",
" T4 = T5 = T0 = trans[n][i];",
"#ifdef HAS_UNLESS",
" while (T4 && T4->e_trans) /* escapes are first in orig list */",
" { T5 = T4; /* remember predecessor */",
" T4 = T4->nxt;",
" }",
"#endif",
" /* T4 points to first non-escape, T5 to its parent, T0 to original list */",
" if (T4 != T0) /* there was at least one escape */",
" { T3 = T5->nxt; /* start of non-escapes */",
" T5->nxt = (Trans *) 0; /* separate */",
" Tx = T0; /* start of the escapes */",
" Ty = T5; /* its tail */",
" T0 = T3; /* the rest, to be reversed */",
" }",
" /* T0 points to first non-escape, Tx to the list of escapes, Ty to its tail */",
"",
" /* first tail-add non-escape transitions, reversed */",
" T3 = (Trans *) 0;", /* remember a possible 'else' */
" for (T5 = T0; T5; T5 = T4)",
" { T4 = T5->nxt;",
"#ifdef HAS_UNLESS",
" if (T5->e_trans)",
" { printf(\"error: cannot happen!\\n\");",
" continue;",
" }",
"#endif",
" if (strcmp(T5->tp, \"else\") == 0)",
" { T3 = T5;",
" T5->nxt = (Trans *) 0;",
" } else",
" { T5->nxt = T1;",
" if (!T1) { T2 = T5; }",
" T1 = T5;",
" } }",
" /* T3 points to a possible else, which is removed from the list */",
" /* T1 points to the reversed list so far (without escapes) */",
" /* T2 points to the tail element -- where the else should go */",
" if (T2 && T3) { T2->nxt = T3; } /* add else */",
"",
" /* add in the escapes, to that they appear at the front */",
" if (Tx && Ty) { Ty->nxt = T1; T1 = Tx; }",
"",
" trans[n][i] = T1;",
" /* reversed, with escapes first and else last */",
" } }",
" if (state_tables && verbose)",
" { printf(\"FINAL proctype %%s\\n\", ",
" procname[n]);",
" for (i = 1; i < m; i++)",
" for (T0 = trans[n][i]; T0; T0 = T0->nxt)",
" crack(n, i, T0, srcln);",
" }",
"#endif",
"}",
"void",
"imed(Trans *T, int v, int n, int j) /* set intermediate state */",
"{ progstate[n][T->st] |= progstate[n][v];",
" accpstate[n][T->st] |= accpstate[n][v];",
" stopstate[n][T->st] |= stopstate[n][v];",
" mapstate[n][j] = T->st;",
"}",
"void",
"tagtable(int n, int m, int is, short srcln[], uchar reach[])",
"{ Trans *z;\n",
" if (is >= m || !trans[n][is]",
" || is <= 0 || reach[is] == 0)",
" return;",
" reach[is] = 0;",
" if (state_tables)",
" for (z = trans[n][is]; z; z = z->nxt)",
" { if (dodot)",
" dot_crack(n, is, z);",
" else",
" crack(n, is, z, srcln);",
" }",
"",
" for (z = trans[n][is]; z; z = z->nxt)",
" {",
"#ifdef HAS_UNLESS",
" int i, j;",
"#endif",
" tagtable(n, m, z->st, srcln, reach);",
"#ifdef HAS_UNLESS",
" for (i = 0; i < HAS_UNLESS; i++)",
" { j = trans[n][is]->escp[i];",
" if (!j) break;",
" tagtable(n, m, j, srcln, reach);",
" }",
"#endif",
" }",
"}",
"void",
"dfs_table(int n, int m, int is, short srcln[], uchar reach[], uchar lstate[])",
"{ Trans *z;\n",
" if (is >= m || is <= 0 || !trans[n][is])",
" return;",
" if ((reach[is] & (4|8|16)) != 0)",
" { if ((reach[is] & (8|16)) == 16) /* on stack, not yet recorded */",
" { lstate[is] = 1;",
" reach[is] |= 8; /* recorded */",
" if (state_tables && verbose)",
" { printf(\"state %%d line %%d is a loopstate\\n\", is, srcln[is]);",
" } }",
" return;",
" }",
" reach[is] |= (4|16); /* visited | onstack */",
" for (z = trans[n][is]; z; z = z->nxt)",
" {",
"#ifdef HAS_UNLESS",
" int i, j;",
"#endif",
" dfs_table(n, m, z->st, srcln, reach, lstate);",
"#ifdef HAS_UNLESS",
" for (i = 0; i < HAS_UNLESS; i++)",
" { j = trans[n][is]->escp[i];",
" if (!j) break;",
" dfs_table(n, m, j, srcln, reach, lstate);",
" }",
"#endif",
" }",
" reach[is] &= ~16; /* no longer on stack */",
"}",
"void",
"do_dfs(int n, int m, int is, short srcln[], uchar reach[], uchar lstate[])",
"{ int i;",
" dfs_table(n, m, is, srcln, reach, lstate);",
" for (i = 0; i < m; i++)",
" reach[i] &= ~(4|8|16);",
"}",
"void",
"crack(int n, int j, Trans *z, short srcln[])",
"{ int i;\n",
" if (!z) return;",
" printf(\"\tstate %%3d -(tr %%3d)-> state %%3d \",",
" j, z->forw, z->st);",
" printf(\"[id %%3d tp %%3d\", z->t_id, z->tpe[0]);",
" if (z->tpe[1]) printf(\",%%d\", z->tpe[1]);",
"#ifdef HAS_UNLESS",
" if (z->e_trans)",
" printf(\" org %%3d\", z->e_trans);",
" else if (state_tables >= 2)",
" for (i = 0; i < HAS_UNLESS; i++)",
" { if (!z->escp[i]) break;",
" printf(\" esc %%d\", z->escp[i]);",
" }",
"#endif",
" printf(\"]\");",
" printf(\" [%%s%%s%%s%%s%%s] %%s:%%d => \",",
" z->atom&6?\"A\":z->atom&32?\"D\":\"-\",",
" accpstate[n][j]?\"a\" :\"-\",",
" stopstate[n][j]?\"e\" : \"-\",",
" progstate[n][j]?\"p\" : \"-\",",
" z->atom & 8 ?\"L\":\"G\",",
" PanSource, srcln[j]);",
" for (i = 0; z->tp[i]; i++)",
" if (z->tp[i] == \'\\n\')",
" printf(\"\\\\n\");",
" else",
" putchar(z->tp[i]);",
" if (verbose && z->qu[0])",
" { printf(\"\\t[\");",
" for (i = 0; i < 6; i++)",
" if (z->qu[i])",
" printf(\"(%%d,%%d)\",",
" z->qu[i], z->ty[i]);",
" printf(\"]\");",
" }",
" printf(\"\\n\");",
" fflush(stdout);",
"}",
"/* spin -a m.pml; cc -o pan pan.c; ./pan -D | dot -Tps > foo.ps; ps2pdf foo.ps */",
"void",
"dot_crack(int n, int j, Trans *z)",
"{ int i;\n",
" if (!z) return;",
" printf(\"\tS%%d -> S%%d [color=black\", j, z->st);",
"",
" if (z->atom&6) printf(\",style=dashed\");", /* A */
" else if (z->atom&32) printf(\",style=dotted\");", /* D */
" else if (z->atom&8) printf(\",style=solid\");", /* L */
" else printf(\",style=bold\");", /* G */
/* other styles: filled dotted */
"",
" printf(\",label=\\\"\");",
" for (i = 0; z->tp[i]; i++)",
" { if (z->tp[i] == \'\\\\\'",
" && z->tp[i+1] == \'n\')",
" { i++; printf(\" \");",
" } else",
" { putchar(z->tp[i]);",
" } }",
" printf(\"\\\"];\\n\");",
" if (accpstate[n][j]) printf(\" S%%d [color=red,style=bold];\\n\", j);",
" else if (progstate[n][j]) printf(\" S%%d [color=green,style=bold];\\n\", j);",
" if (stopstate[n][j]) printf(\" S%%d [color=blue,style=bold,shape=box];\\n\", j);",
"}",
"",
"#ifdef VAR_RANGES",
"#define BYTESIZE 32 /* 2^8 : 2^3 = 256:8 = 32 */",
"",
"typedef struct Vr_Ptr {",
" char *nm;",
" uchar vals[BYTESIZE];",
" struct Vr_Ptr *nxt;",
"} Vr_Ptr;",
"Vr_Ptr *ranges = (Vr_Ptr *) 0;",
"",
"void",
"logval(char *s, int v)",
"{ Vr_Ptr *tmp;",
"",
" if (v<0 || v > 255) return;",
" for (tmp = ranges; tmp; tmp = tmp->nxt)",
" if (!strcmp(tmp->nm, s))",
" goto found;",
" tmp = (Vr_Ptr *) emalloc(sizeof(Vr_Ptr));",
" tmp->nxt = ranges;",
" ranges = tmp;",
" tmp->nm = s;",
"found:",
" tmp->vals[(v)/8] |= 1<<((v)%%8);",
"}",
"",
"void",
"dumpval(uchar X[], int range)",
"{ int w, x, i, j = -1;",
"",
" for (w = i = 0; w < range; w++)",
" for (x = 0; x < 8; x++, i++)",
" {",
"from: if ((X[w] & (1<<x)))",
" { printf(\"%%d\", i);",
" j = i;",
" goto upto;",
" } }",
" return;",
" for (w = 0; w < range; w++)",
" for (x = 0; x < 8; x++, i++)",
" {",
"upto: if (!(X[w] & (1<<x)))",
" { if (i-1 == j)",
" printf(\", \");",
" else",
" printf(\"-%%d, \", i-1);",
" goto from;",
" } }",
" if (j >= 0 && j != 255)",
" printf(\"-255\");",
"}",
"",
"void",
"dumpranges(void)",
"{ Vr_Ptr *tmp;",
" printf(\"\\nValues assigned within \");",
" printf(\"interval [0..255]:\\n\");",
" for (tmp = ranges; tmp; tmp = tmp->nxt)",
" { printf(\"\\t%%s\\t: \", tmp->nm);",
" dumpval(tmp->vals, BYTESIZE);",
" printf(\"\\n\");",
" }",
"}",
"#endif",
0,
};