andr3/scyther
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

- Much work on the new states counter abstractions.

Browse Source
This commit is contained in:
ccremers 2004-07-21 10:35:39 +00:00
parent 1ecdd1eb5a
commit de1d114f86
7 changed files with 122 additions and 69 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

23
src/main.c
View File

@ -422,7 +422,7 @@ main (int argc, char **argv)
else
{
/* check for no claims */
if (sys->failed == 0)
if (sys->failed == STATES0)
{
/* mark exit code */
exitcode = 2;
@ -494,13 +494,13 @@ timersPrint (const System sys)
* NoClaim no claims
*/
if (sys->claims == 0)
if (sys->claims == STATES0)
{
fprintf (stderr, "NoClaim\t\t");
}
else
{
if (sys->failed > 0)
if (sys->failed != STATES0)
fprintf (stderr, "L:%i\t\t", attackLength(sys->attack));
else
fprintf (stderr, "None\t\t");
@ -513,9 +513,7 @@ timersPrint (const System sys)
if (seconds > 0)
{
fprintf (stderr, "%.3e\t",
(double) (sys->statesLow +
(sys->statesHigh * ULONG_MAX)) / seconds);
fprintf (stderr, "%.3e\t", statesDouble (sys->states) / seconds);
}
else
{
@ -653,13 +651,22 @@ modelCheck (const System sys)
{
graphInit (sys);
}
traverse (sys); // start model checking
/* modelcheck the system */
traverse (sys);
/* clean up any states display */
if (sys->switchS > 0)
{
fprintf (stderr, " \r");
}
timersPrint (sys);
if (sys->switchStatespace)
{
graphDone (sys);
}
return (sys->failed);
return (sys->failed != STATES0);
}

26
src/modelchecker.c
View File

@ -171,33 +171,25 @@ executeStep (const System sys, const int run)
}
/* we will explore this state, so count it. */
/* ulong was _not_ enough... */
if (++sys->statesLow == ULONG_MAX)
{
sys->statesLow = 0;
sys->statesHigh++;
/* No test for overflow statesHigh. If stuff gets that fast, then
* I surely hope the max of ulong is set higher in the language def */
}
sys->states = statesIncrease (sys->states);
/* show progression */
if (sys->switchS > 0)
{
if (sys->statesLow % (long int) sys->switchS == 0)
sys->interval = statesIncrease (sys->interval);
if (!statesSmallerThan (sys->interval, (unsigned long int) sys->switchS))
{
sys->interval = STATES0;
fprintf (stderr, "States ");
if (sys->statesHigh == 0 && sys->statesLow < 1000000)
fprintf (stderr, "%u", sys->statesLow);
else
fprintf (stderr, "%8.3e", (double) sys->statesLow + (sys->statesHigh * ULONG_MAX));
statesFormat (stderr, sys->states);
fprintf (stderr, " \r");
}
}
/* store new node numbder */
sys->traceNode[sys->step] = sys->statesLow;
sys->traceNode[sys->step] = sys->states;
/* the construction below always assumes MAX_GRAPH_STATES to be smaller than the unsigned long it, which seems realistic. */
if (sys->switchStatespace && sys->statesHigh == 0 && sys->statesLow < MAX_GRAPH_STATES)
if (sys->switchStatespace && statesSmallerThan (sys->states, MAX_GRAPH_STATES))
{
/* display graph */
graphNode (sys);
@ -1443,7 +1435,7 @@ violateClaim (const System sys, int length, int claimev, Termlist reqt)
flag = 1;
/* Count the violations */
sys->failed++;
sys->failed = statesIncrease (sys->failed);
/* mark the path in the state graph? */
if (sys->switchStatespace)
@ -1563,7 +1555,7 @@ executeTry (const System sys, int run)
/*
* update claim counters
*/
sys->claims++;
sys->claims = statesIncrease (sys->claims);
/*
* distinguish claim types

33
src/output.c
View File

@ -513,7 +513,9 @@ void graphInit (const System sys)
printf ("\torientation=landscape;\n");
/* start with initial node 0 */
printf ("\tn0 [shape=box,label=\"M0: ");
printf ("\tn");
statesFormat (stdout, STATES0);
printf (" [shape=box,label=\"M0: ");
tl = knowledgeSet (sys->know);
termlistPrint (tl);
termlistDelete (tl);
@ -529,18 +531,20 @@ void graphDone (const System sys)
void graphNode (const System sys)
{
Termlist newtl;
unsigned long int thisNode, parentNode;
states_t thisNode, parentNode;
int index;
Roledef rd;
/* determine node numbers */
index = sys->step - 1;
parentNode = sys->traceNode[index];
thisNode = sys->statesLow;
thisNode = sys->states;
rd = sys->traceEvent[index];
/* add node */
printf ("\tn%li [shape=", thisNode);
printf ("\tn");
statesFormat (stdout, thisNode);
printf (" [shape=");
newtl = knowledgeNew (sys->traceKnow[index], sys->traceKnow[index+1]);
if (newtl != NULL)
@ -559,9 +563,12 @@ void graphNode (const System sys)
printf ("];\n");
/* add edge */
printf ("\tn%li -> n%li ", parentNode, thisNode);
printf ("\tn");
statesFormat (stdout, parentNode);
printf (" -> n");
statesFormat (stdout, thisNode);
/* add label */
printf ("[label=\"");
printf (" [label=\"");
if (rd->type == CLAIM && untrustedAgent (sys, sys->runs[sys->traceRun[index]].agents))
{
printf ("Skip claim in #%i\"", sys->traceRun[index]);
@ -588,7 +595,7 @@ void graphNode (const System sys)
void graphNodePath (const System sys, const int length, const char* nodepar)
{
int i;
unsigned long int thisNode;
states_t thisNode;
i = 0;
while (i < length)
@ -597,7 +604,9 @@ void graphNodePath (const System sys, const int length, const char* nodepar)
thisNode = sys->traceNode[i];
/* color node */
printf ("\tn%li [%s];\n", thisNode, nodepar);
printf ("\tn");
statesFormat (stdout, thisNode);
printf (" [%s];\n", nodepar);
i++;
}
}
@ -605,7 +614,7 @@ void graphNodePath (const System sys, const int length, const char* nodepar)
void graphEdgePath (const System sys, const int length, const char* edgepar)
{
int i;
unsigned long int thisNode, prevNode;
states_t thisNode, prevNode;
i = 0;
prevNode = sys->traceNode[i];
@ -615,7 +624,11 @@ void graphEdgePath (const System sys, const int length, const char* edgepar)
thisNode = sys->traceNode[i+1];
/* color edge */
printf ("\tn%li -> n%li [%s];\n", prevNode, thisNode, edgepar);
printf ("\tn");
statesFormat (stdout, prevNode);
printf (" -> ");
statesFormat (stdout, thisNode);
printf (" [%s];\n", edgepar);
prevNode = thisNode;
i++;
}

38
src/runs.c
View File

@ -113,11 +113,11 @@ systemReset (const System sys)
Claimlist cl;
/* some initial counters */
sys->statesLow = 0; // number of explored states
sys->statesHigh = 0; // this is not as ridiculous as it might seem
sys->states = STATES0;
sys->interval = STATES0;
sys->claims = STATES0;
sys->failed = STATES0;
sys->explore = 1; // do explore the space
sys->claims = 0; // number of claims encountered
sys->failed = 0; // number of failed claims
cl = sys->claimlist;
while (cl != NULL)
{
@ -161,7 +161,7 @@ systemDone (const System sys)
memFree (sys->traceEvent, s * sizeof (Roledef));
memFree (sys->traceRun, s * sizeof (int));
memFree (sys->traceKnow, s * sizeof (Knowledge));
memFree (sys->traceNode, s * sizeof (unsigned long int));
memFree (sys->traceNode, s * sizeof (states_t));
/* clear roledefs */
for (run = 0; run < sys->maxruns; run++)
@ -174,38 +174,18 @@ systemDone (const System sys)
systemDestroy (sys);
}
//! Approximate the number of states traversed using a double type.
double
statesApproximation (const System sys)
{
if (sys->statesHigh == 0)
return (double) sys->statesLow;
else
return (double) (sys->statesLow + (sys->statesHigh * ULONG_MAX));
}
//! Print a short version of the number of states.
void
statesPrintShort (const System sys)
{
fprintf (stderr,"%.3e", statesApproximation (sys));
fprintf (stderr,"%.3e", statesDouble (sys->states));
}
//! Print the number of states.
void
statesPrint (const System sys)
{
if (sys->statesHigh == 0)
{
printf ("%g", (double) sys->statesLow);
}
else
{
double dstates;
dstates = sys->statesLow + (sys->statesHigh * ULONG_MAX);
printf ("%.3e (...)", dstates);
}
statesFormat (stdout, sys->states);
printf (" states traversed.\n");
if (globalLatex)
printf("\n");
@ -777,7 +757,7 @@ systemStart (const System sys)
sys->traceEvent = memAlloc (s * sizeof (Roledef));
sys->traceRun = memAlloc (s * sizeof (int));
sys->traceKnow = memAlloc (s * sizeof (Knowledge));
sys->traceNode = memAlloc (s * sizeof (unsigned long int));
sys->traceNode = memAlloc (s * sizeof (states_t));
/* clear, for niceties */
for (i = 0; i < s; i++)
@ -785,7 +765,7 @@ systemStart (const System sys)
sys->traceEvent[i] = NULL;
sys->traceRun[i] = 0;
sys->traceKnow[i] = NULL;
sys->traceNode[i] = 0;
sys->traceNode[i] = STATES0;
}
}

11
src/runs.h
View File

@ -6,6 +6,7 @@
#include "termlists.h"
#include "knowledge.h"
#include "constraints.h"
#include "states.h"
#define READ 1
#define SEND 2
@ -228,10 +229,10 @@ struct system
int explore; //!< Boolean: explore states after actions or not.
/* counters */
unsigned long int statesLow; //!< State number (low)
unsigned long int statesHigh; //!< State number (high)
unsigned long int claims; //!< Number of claims encountered.
unsigned long int failed; //!< Number of claims failed.
states_t states;
states_t interval; //!< Used to update state printing at certain intervals
states_t claims; //!< Number of claims encountered.
states_t failed; //!< Number of claims failed.
/* matching */
int match; //!< Matching type.
@ -252,7 +253,7 @@ struct system
Roledef *traceEvent; //!< Trace roledefs: MaxRuns * maxRoledef
int *traceRun; //!< Trace run ids: MaxRuns * maxRoledef
Knowledge *traceKnow; //!< Trace intruder knowledge: Maxruns * maxRoledef
unsigned long int *traceNode; //!< Trace node traversal: Maxruns * maxRoledef
states_t *traceNode; //!< Trace node traversal: Maxruns * maxRoledef
/* POR reduction assistance */
int PORphase; //!< -1: init (all sends), 0...: recurse reads

40
src/states.c Normal file
View File

@ -0,0 +1,40 @@
#include "states.h"
/* States counter operations
*
* Note that these are also used for encountered claims and such.
*/
__inline__ states_t
statesIncrease (const states_t states)
{
return states+1;
}
__inline__ double
statesDouble (const states_t states)
{
return (double) states;
}
__inline__ int
statesSmallerThan (const states_t states, unsigned long int reflint)
{
if (states < (states_t) reflint)
return 1;
else
return 0;
}
//! Sensible output for number of states/claims
/**
* Acts like a modified form of %g
*/
__inline__ void
statesFormat (FILE* out, const states_t states)
{
if (states < 1000000)
fprintf (out, "%lu", states);
else
fprintf (out, "%.3e", statesDouble (states));
}

20
src/states.h Normal file
View File

@ -0,0 +1,20 @@
#ifndef STATES
#define STATES
/**
* Header file for the states counter datatype.
*
* Previously, the states number was just a unsigned int, but that
* turned out to be insufficient.
*/
#include <stdio.h>
typedef unsigned long int states_t;
#define STATES0 0
__inline__ states_t statesIncrease (const states_t states);
__inline__ double statesDouble (const states_t states);
__inline__ int statesSmallerThan (const states_t states, unsigned long int reflint);
__inline__ void statesFormat (FILE* out, const states_t states);
#endif