require 'timeout'
begin
        Timeout.timeout(10) {
                time_start=Time.now.to_i
                puts "hello1"
                sleep 5
                raise Exception.new("Timeout") if ((Time.now.to_i-time_start))>20
                        puts "hello2"
                sleep 10
        }
rescue Timeout::Error
        puts ($!).backtrace
end