Why did I set -2 to 100 but did not implement the splice mutation?

[Subway2023]

afl-fuzz-compiler -1 0 -2 100 -p 4448 -t 300+ -m none -i output -n -- solc-0825 --bin -o output_bin --overwrite @@

When I executed the command, it did not request the server to retrieve the Solidity program from comby-decomposer.