:: String -> Int is:exact -package:string-conversions -package:speculate -package:hxt -package:gpolyline -package:ViennaRNAParser -package:ghc -package:Agda -package:base -package:language-c package:ChasingBottoms

nonBottomError s raises an exception (AssertionFailed) that is not caught by isBottom. Use s to describe the exception.