unset segfaults
unset timeouts
for ((o=0; o<100; o++))
    do
        for ((i=0; i<1000; i++))
            do
                timeout 2 ./readrandom 1 /dev/urandom
                ret=$?
                if [[ $ret == 139 ]]
                    then
                        segfaults+=(139)
                elif [[ $ret == 124 ]]
                    then
                        timeouts+=(124)
                fi
        done
done
echo "segfaults recieved: ${#segfaults[@]}   $(declare -p segfaults >/dev/null 2>&1)"
echo "timeouts recieved: ${#timeouts[@]}   $(declare -p timeouts >/dev/null 2>&1)"
[output not included]
segfaults recieved: 2
timeouts recieved: 30