source: CIVL/examples/pthread/fib_bench_longest_false.cvl@ dad2cf06

/*****************************************************************************
* SOURCE: This is a translation of a Pthread program from 
* the Pthread benchmarks of SV-COMP 2014.
* https://svn.sosy-lab.org/software/sv-benchmarks/tags/svcomp14/
* FILE: fib_bench_longest_false.cvl
* DESCRIPTION: 
*   Simple program of threads interacting which causes an error when
*   their total reaches a certain value. The fix simply involves changing the output
*   for which an error will be caused; specifically, here error is caused when i or j
*   >=46368, the fix has i or j > 46368.
* Command line execution:
* civl verify -inputNUM=11 fib_bench_longest_false.cvl
******************************************************************************/
#include "pthread.cvh"
#include <civlc.h>

int i=1, j=1;

$input int NUM;

void *t1(void* arg)
{
    int k = 0;
    
    for (k = 0; k < NUM; k++)
    {
        printf("%d",k);
        i+=j;
    }
    pthread_exit(NULL, false, NULL, 0); //Different parameters
}

void *t2(void* arg)
{
    int k = 0;
    
    for (k = 0; k < NUM; k++)
        {
            printf("%d",k);
        j+=i;
    }   
        
    pthread_exit(NULL, false, NULL, 0); //Different parameters
}

int main(int argc, char **argv)
{
    pthread_t id1, id2;
    
    pthread_create(&id1, NULL, t1, NULL);
    pthread_create(&id2, NULL, t2, NULL);
    
    pthread_join(id1, NULL);  //Added pthread_join, probably error in competition code
    pthread_join(id2, NULL);
    
    if (i >= 46368 || j >= 46368) {
        $assert($false);
    }
    return 0;
}