when i checked the netlist for tb_reram test case I got the following:

** sch_path: /home/eda_work/eman/hassan/share/pdk/sky130B/libs.tech/xschem/sky130_tests/tb_reram.sch

**.subckt tb_reram

V1 net1 0 PWL (0 0 0.25u 1.8 0.5u 0 0.75u -1.8 1.0u 0.0)

.save i(v1)

XR1 TOP 0 sky130_fd_pr_reram__reram_cell Tfilament_0=3.8e-9

Vreram net1 TOP 0

.save i(vreram)

**** begin user architecture code

.control

save all

tran 0.1n 1.5u

write tb_reram.raw

.endc

**** end user architecture code

**.ends

**** begin user architecture code

.subckt sky130_fd_pr_reram__reram_cell TE BE Tfilament_0=3.3e-9 area_ox=0.1024e-12

N1 TE BE nFilament sky130_fd_pr_reram__reram_model

.ic v(nFilament)={Tfilament_0*1.0e9}

.ends sky130_fd_pr_reram__reram_cell

.model sky130_fd_pr_reram__reram_model sky130_fd_pr_reram__reram_module area_ox=0.1024e-12  area_ox

+ = 0.1024e-12  Tox = 5.0  Tfilament_max = 4.9  Tfilament_min = 3.3  Eact_generation = 1.501

+  Eact_recombination  = 1.500  I_k1  = 6.140e-5  Tfilament_ref = 4.7249  V_ref = 0.430  velocity_k1 = 150  gamma_k0  =

+ 16.5  gamma_k1  = -1.25  Temperature_0 = 300  C_thermal = 3.1825e-16  tau_thermal = 0.23e-9  t_step  =

+ 1.0e-9  smoothing = 1e-7  Kclip = 200

.control

pre_osdi

+ /home/eda_work/eman/hassan/share/pdk/sky130B/libs.tech/ngspice/sky130_fd_pr_reram__reram_module.osdi

.endc