maybe use -o option and -W option to create honggfuzz output directories so it does not write into shared_corpus?
do NOT restart AFL++; the -F option is enough (pointing it to the -o directory from honggfuzz if the above is implemented)
DO restart honggfuzz every 4-8 hours
do NOT minimize shared_seeds, instead:
use afl-cmin on shared_seeds to write into afl_seeds
use honggfuzz -i shared_seeds --output honggfuzz_seeds -P -M -- ./target to minimize for honggfuzz, otherwise ~25% of honggfuzz' coverage is lost if minimized with afl-cmin
wipe shared_seeds and recreate with the contents of afl_seeds + honggfuzz_seeds
honggfuzz -i shared_seeds --output honggfuzz_seeds -P -M -- ./targetto minimize for honggfuzz, otherwise ~25% of honggfuzz' coverage is lost if minimized with afl-cmin