# Blender 2.80 (sub 32), Commit date: 2018-11-22 00:13, Hash 3b7daa5bf46
bpy.ops.sculpt.sculptmode_toggle()  # Operator
bpy.context.space_data.context = 'MODIFIER'  # Property
bpy.ops.object.modifier_add(type='MULTIRES')  # Operator
bpy.context.object.modifiers["Multires"].subdivision_type = 'SIMPLE'  # Property
bpy.ops.object.multires_subdivide(modifier="Multires")  # Operator
bpy.ops.object.multires_subdivide(modifier="Multires")  # Operator
bpy.ops.object.multires_subdivide(modifier="Multires")  # Operator
bpy.ops.object.multires_subdivide(modifier="Multires")  # Operator

# backtrace
./blender(BLI_system_backtrace+0x1d) [0x1b6e9ad]
./blender() [0x1145579]
/lib/x86_64-linux-gnu/libc.so.6(+0x354b0) [0x7fc68c2a44b0]
/lib/x86_64-linux-gnu/libc.so.6(+0x16f010) [0x7fc68c3de010]
./blender() [0x148ad26]
./blender() [0x148bac7]
./blender(BKE_undosys_step_undo_with_data_ex+0x8d) [0x19b14cd]
./blender() [0x1174837]
./blender() [0x117499c]
./blender() [0x114a58b]
./blender() [0x114d566]
./blender() [0x114d819]
./blender() [0x114e28c]
./blender(wm_event_do_handlers+0x820) [0x114eea0]
./blender(WM_main+0x20) [0x1145f80]
./blender(main+0x327) [0x10ac237]
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf0) [0x7fc68c28f830]
./blender(_start+0x2a) [0x114207a]