/usr/lib/x86_64-linux-gnu/ is in libverilog-perl 3.418-1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/x86_64-linux-gnu/perl5/
/usr/lib/x86_64-linux-gnu/perl5/5.22/
/usr/lib/x86_64-linux-gnu/perl5/5.22/auto/
/usr/lib/x86_64-linux-gnu/perl5/5.22/auto/Verilog/
/usr/lib/x86_64-linux-gnu/perl5/5.22/auto/Verilog/Parser/
/usr/lib/x86_64-linux-gnu/perl5/5.22/auto/Verilog/Parser/Parser.so
/usr/lib/x86_64-linux-gnu/perl5/5.22/auto/Verilog/Preproc/
/usr/lib/x86_64-linux-gnu/perl5/5.22/auto/Verilog/Preproc/Preproc.so
/usr/lib/x86_64-linux-gnu/perl5/5.22/Verilog/
/usr/lib/x86_64-linux-gnu/perl5/5.22/Verilog/EditFiles.pm
/usr/lib/x86_64-linux-gnu/perl5/5.22/Verilog/SigParser.pm
/usr/lib/x86_64-linux-gnu/perl5/5.22/Verilog/Language.pm
/usr/lib/x86_64-linux-gnu/perl5/5.22/Verilog/Std.pm
/usr/lib/x86_64-linux-gnu/perl5/5.22/Verilog/Parser.pm
/usr/lib/x86_64-linux-gnu/perl5/5.22/Verilog/Verilog-Perl.pod
/usr/lib/x86_64-linux-gnu/perl5/5.22/Verilog/Preproc.pm
/usr/lib/x86_64-linux-gnu/perl5/5.22/Verilog/Netlist.pm
/usr/lib/x86_64-linux-gnu/perl5/5.22/Verilog/Netlist/
/usr/lib/x86_64-linux-gnu/perl5/5.22/Verilog/Netlist/Interface.pm
/usr/lib/x86_64-linux-gnu/perl5/5.22/Verilog/Netlist/Net.pm
/usr/lib/x86_64-linux-gnu/perl5/5.22/Verilog/Netlist/ContAssign.pm
/usr/lib/x86_64-linux-gnu/perl5/5.22/Verilog/Netlist/ModPort.pm
/usr/lib/x86_64-linux-gnu/perl5/5.22/Verilog/Netlist/Pin.pm
/usr/lib/x86_64-linux-gnu/perl5/5.22/Verilog/Netlist/Logger.pm
/usr/lib/x86_64-linux-gnu/perl5/5.22/Verilog/Netlist/Port.pm
/usr/lib/x86_64-linux-gnu/perl5/5.22/Verilog/Netlist/Cell.pm
/usr/lib/x86_64-linux-gnu/perl5/5.22/Verilog/Netlist/File.pm
/usr/lib/x86_64-linux-gnu/perl5/5.22/Verilog/Netlist/Subclass.pm
/usr/lib/x86_64-linux-gnu/perl5/5.22/Verilog/Netlist/Module.pm
/usr/lib/x86_64-linux-gnu/perl5/5.22/Verilog/Netlist/Defparam.pm
/usr/lib/x86_64-linux-gnu/perl5/5.22/Verilog/Getopt.pm