severe bug found in parallel zeta

[helm.git] / matita / matita / contribs / lambdadelta / basic_2 / rt_transition / cpr.ma

diff --git a/matita/matita/contribs/lambdadelta/basic_2/rt_transition/cpr.ma b/matita/matita/contribs/lambdadelta/basic_2/rt_transition/cpr.ma
index 6411f701ce1ddd4233da43869d4361803beef9c2..fb1f479dd4d3f02789abadcf140350596c886aeb 100644 (file)
--- a/matita/matita/contribs/lambdadelta/basic_2/rt_transition/cpr.ma
+++ b/matita/matita/contribs/lambdadelta/basic_2/rt_transition/cpr.ma
@@ -12,6 +12,7 @@
 (*                                                                        *)
 (**************************************************************************)
 
+include "ground_2/insert_eq/insert_eq_0.ma".
 include "basic_2/rt_transition/cpm.ma".
 
 (* CONTEXT-SENSITIVE PARALLEL R-TRANSITION FOR TERMS ************************)
@@ -41,13 +42,15 @@ lemma cpr_inv_atom1: ∀h,J,G,L,T2. ⦃G, L⦄ ⊢ ⓪{J} ➡[h] T2 →
                       | ∃∃I,K,T,i. ⦃G, K⦄ ⊢ #i ➡[h] T & ⬆*[1] T ≘ T2 &
                                    L = K.ⓘ{I} & J = LRef (↑i).
 #h #J #G #L #T2 #H elim (cpm_inv_atom1 … H) -H *
-/3 width=8 by tri_lt, or3_intro0, or3_intro1, or3_intro2, ex4_4_intro, ex4_3_intro/
-#n #_ #_ #H destruct
+[2,4:|*: /3 width=8 by or3_intro0, or3_intro1, or3_intro2, ex4_4_intro, ex4_3_intro/ ]
+[ #n #_ #_ #H destruct
+| #n #K #V1 #V2 #_ #_ #_ #_ #H destruct
+]  
 qed-.
 
 (* Basic_1: includes: pr0_gen_sort pr2_gen_sort *)
 lemma cpr_inv_sort1: ∀h,G,L,T2,s. ⦃G, L⦄ ⊢ ⋆s ➡[h] T2 → T2 = ⋆s.
-#h #G #L #T2 #s #H elim (cpm_inv_sort1 … H) -H * // #_ #H destruct
+#h #G #L #T2 #s #H elim (cpm_inv_sort1 … H) -H //
 qed-.
 
 lemma cpr_inv_zero1: ∀h,G,L,T2. ⦃G, L⦄ ⊢ #0 ➡[h] T2 →
@@ -100,61 +103,34 @@ qed-.
 
 (* Basic eliminators ********************************************************)
 
-lemma cpr_ind (h): ∀R:relation4 genv lenv term term.
-                   (∀I,G,L. R G L (⓪{I}) (⓪{I})) →
-                   (∀G,K,V1,V2,W2. ⦃G, K⦄ ⊢ V1 ➡[h] V2 → R G K V1 V2 →
-                     ⬆*[1] V2 ≘ W2 → R G (K.ⓓV1) (#0) W2
-                   ) → (∀I,G,K,T,U,i. ⦃G, K⦄ ⊢ #i ➡[h] T → R G K (#i) T →
-                     ⬆*[1] T ≘ U → R G (K.ⓘ{I}) (#↑i) (U)
+lemma cpr_ind (h): ∀Q:relation4 genv lenv term term.
+                   (∀I,G,L. Q G L (⓪{I}) (⓪{I})) →
+                   (∀G,K,V1,V2,W2. ⦃G, K⦄ ⊢ V1 ➡[h] V2 → Q G K V1 V2 →
+                     ⬆*[1] V2 ≘ W2 → Q G (K.ⓓV1) (#0) W2
+                   ) → (∀I,G,K,T,U,i. ⦃G, K⦄ ⊢ #i ➡[h] T → Q G K (#i) T →
+                     ⬆*[1] T ≘ U → Q G (K.ⓘ{I}) (#↑i) (U)
                    ) → (∀p,I,G,L,V1,V2,T1,T2. ⦃G, L⦄ ⊢ V1 ➡[h] V2 → ⦃G, L.ⓑ{I}V1⦄ ⊢ T1 ➡[h] T2 →
-                     R G L V1 V2 → R G (L.ⓑ{I}V1) T1 T2 → R G L (ⓑ{p,I}V1.T1) (ⓑ{p,I}V2.T2)
+                     Q G L V1 V2 → Q G (L.ⓑ{I}V1) T1 T2 → Q G L (ⓑ{p,I}V1.T1) (ⓑ{p,I}V2.T2)
                    ) → (∀I,G,L,V1,V2,T1,T2. ⦃G, L⦄ ⊢ V1 ➡[h] V2 → ⦃G, L⦄ ⊢ T1 ➡[h] T2 →
-                     R G L V1 V2 → R G L T1 T2 → R G L (ⓕ{I}V1.T1) (ⓕ{I}V2.T2)
-                   ) â\86\92 (â\88\80G,L,V,T1,T,T2. â¦\83G, L.â\93\93Vâ¦\84 â\8a¢ T1 â\9e¡[h] T â\86\92 R G (L.â\93\93V) T1 T →
-                     ⬆*[1] T2 ≘ T → R G L (+ⓓV.T1) T2
-                   ) → (∀G,L,V,T1,T2. ⦃G, L⦄ ⊢ T1 ➡[h] T2 → R G L T1 T2 →
-                     R G L (ⓝV.T1) T2
+                     Q G L V1 V2 → Q G L T1 T2 → Q G L (ⓕ{I}V1.T1) (ⓕ{I}V2.T2)
+                   ) â\86\92 (â\88\80G,L,V,T1,T,T2. â¬\86*[1] T â\89\98 T1 â\86\92 â¦\83G, Lâ¦\84 â\8a¢ T â\9e¡[h] T2 →
+                     Q G L T T2 → Q G L (+ⓓV.T1) T2
+                   ) → (∀G,L,V,T1,T2. ⦃G, L⦄ ⊢ T1 ➡[h] T2 → Q G L T1 T2 →
+                     Q G L (ⓝV.T1) T2
                    ) → (∀p,G,L,V1,V2,W1,W2,T1,T2. ⦃G, L⦄ ⊢ V1 ➡[h] V2 → ⦃G, L⦄ ⊢ W1 ➡[h] W2 → ⦃G, L.ⓛW1⦄ ⊢ T1 ➡[h] T2 →
-                     R G L V1 V2 → R G L W1 W2 → R G (L.ⓛW1) T1 T2 →
-                     R G L (ⓐV1.ⓛ{p}W1.T1) (ⓓ{p}ⓝW2.V2.T2)
+                     Q G L V1 V2 → Q G L W1 W2 → Q G (L.ⓛW1) T1 T2 →
+                     Q G L (ⓐV1.ⓛ{p}W1.T1) (ⓓ{p}ⓝW2.V2.T2)
                    ) → (∀p,G,L,V1,V,V2,W1,W2,T1,T2. ⦃G, L⦄ ⊢ V1 ➡[h] V → ⦃G, L⦄ ⊢ W1 ➡[h] W2 → ⦃G, L.ⓓW1⦄ ⊢ T1 ➡[h] T2 →
-                     R G L V1 V → R G L W1 W2 → R G (L.ⓓW1) T1 T2 →
-                     ⬆*[1] V ≘ V2 → R G L (ⓐV1.ⓓ{p}W1.T1) (ⓓ{p}W2.ⓐV2.T2)
+                     Q G L V1 V → Q G L W1 W2 → Q G (L.ⓓW1) T1 T2 →
+                     ⬆*[1] V ≘ V2 → Q G L (ⓐV1.ⓓ{p}W1.T1) (ⓓ{p}W2.ⓐV2.T2)
                    ) →
-                   ∀G,L,T1,T2. ⦃G, L⦄ ⊢ T1 ➡[h] T2 → R G L T1 T2.
-#h #R #IH1 #IH2 #IH3 #IH4 #IH5 #IH6 #IH7 #IH8 #IH9 #G #L #T1 #T2
-* #c #HC #H generalize in match HC; -HC
-elim H -c -G -L -T1 -T2
-[ /2 width=3 by ex2_intro/
-| #G #L #s #H
-  lapply (isrt_inv_01 … H) -H #H destruct
-| /3 width=4 by ex2_intro/
-| #c #G #L #V1 #V2 #W2 #_ #_ #_ #H
-  elim (isrt_inv_plus_SO_dx … H) -H // #n #_ #H destruct
-| /3 width=4 by ex2_intro/
-| #cV #cT #p #I #G #L #V1 #V2 #T1 #T2 #HV12 #HT12 #IHV #IHT #H
-  elim (isrt_O_inv_max … H) -H #HcV #HcT
-  /4 width=3 by isr_inv_shift, ex2_intro/
-| #cV #cT #G #L #V1 #V2 #T1 #T2 #HV12 #HT12 #IHV #IHT #H
-  elim (isrt_O_inv_max … H) -H #HcV #HcT
-  /4 width=3 by isr_inv_shift, ex2_intro/
-| #cU #cT #G #L #U1 #U2 #T1 #T2 #HUT #HU12 #HT12 #IHU #IHT #H
-  elim (isrt_O_inv_max … H) -H #HcV #HcT
-  /3 width=3 by ex2_intro/
-| /4 width=4 by isrt_inv_plus_O_dx, ex2_intro/
-| /4 width=4 by isrt_inv_plus_O_dx, ex2_intro/
-| #c #G #L #U1 #U2 #T #_ #_ #H
-  elim (isrt_inv_plus_SO_dx … H) -H // #n #_ #H destruct
-| #cV #cW #cT #p #G #L #V1 #V2 #W1 #W2 #T1 #T2 #HV12 #HW12 #HT12 #IHV #IHW #IHT #H
-  lapply (isrt_inv_plus_O_dx … H ?) -H // #H
-  elim (isrt_O_inv_max … H) -H #H #HcT
-  elim (isrt_O_inv_max … H) -H #HcV #HcW
-  /4 width=3 by isr_inv_shift, ex2_intro/
-| #cV #cW #cT #p #G #L #V1 #V #V2 #W1 #W2 #T1 #T2 #HV1 #HV2 #HW12 #HT12 #IHV #IHW #IHT #H
-  lapply (isrt_inv_plus_O_dx … H ?) -H // #H
-  elim (isrt_O_inv_max … H) -H #H #HcT
-  elim (isrt_O_inv_max … H) -H #HcV #HcW
-  /4 width=4 by isr_inv_shift, ex2_intro/
+                   ∀G,L,T1,T2. ⦃G, L⦄ ⊢ T1 ➡[h] T2 → Q G L T1 T2.
+#h #Q #IH1 #IH2 #IH3 #IH4 #IH5 #IH6 #IH7 #IH8 #IH9 #G #L #T1 #T2
+@(insert_eq_0 … 0) #n #H
+@(cpm_ind … H) -G -L -T1 -T2 -n [2,4,11:|*: /3 width=4 by/ ]
+[ #G #L #s #H destruct
+| #n #G #K #V1 #V2 #W2 #_ #_ #_ #H destruct
+| #n #G #L #U1 #U2 #T #_ #_ #H destruct
 ]
 qed-.