My intention was to run LVS on each of the caravel sub-block gds and verilog and then run the top level caravel LVS with the top gds and combined verilog netlists. 

caravel_clocking

 passed standalone LVS, but the instantiation of this block inside 

caravel

 is different from the standalone 

caravel_clocking

 gds. And since the 

caravel_clocking

 gds matches the 

verilog/gl/caravel_clocking.v

 netlist, the netlist will not match 

caravel_clocking

 in 

caravel.gds

.

caravel_clocking.gds

 has one instance of 

sky130_fd_sc_hd__dlymetal6s2s_1

 while 

caravel_clocking

 in 

caravel.gds

 has three instances of 

sky130_fd_sc_hd__dlymetal6s2s_1

. As I was saying before, if we can convert the verilog to spice, we can run CVC-RV on that. However, it needs to pass LVS to be reliable. 2 files