elim (cprs_inv_abst … HU02 Abst W0) -HU02 #HW02 #_
lapply (cprs_trans … HW10 … HW02) -W0 /3 width=10 by snv_appl, ex2_intro/ (**) (* auto is too slow without trace *)
| #W1 #T1 #HL0 #HT0 #H1 #X #l #H2 destruct -IH3 -IH2
- elim (snv_inv_cast … H1) -H1 #U1 #l0 #HW1 #HT1 #HTU1 #HUW1
+ elim (snv_inv_cast … H1) -H1 #U1 #l0 #HW1 #HT1 #HTU1 #HUW1
lapply (ssta_inv_cast1 … H2) -H2 /3 width=5/
]
qed-.