I was also going to suggest Spark https://www.adacore.com/sparkpro
replyThere's also this paper, "Memory Safety in Ada, SPARK, and Rust"
https://www.adacore.com/papers/memory-safety-in-ada-spark-an...
I’ve always found the table comparison (Rust/Ada/SPARK) from that same source to be very informative:
replyhttps://blog.adacore.com/should-i-choose-ada-spark-or-rust-o...