Mercurial > hg > Gears > GearsAgda

changeset 886:0aac292a5e1c

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
...
author Shinji KONO <kono@ie.u-ryukyu.ac.jp>
date Sun, 12 May 2024 22:55:14 +0900
parents ecf594d7b731
children e92daa8d617b
files hoareBinaryTree1.agda
diffstat 1 files changed, 84 insertions(+), 7 deletions(-) [+]
line wrap: on
line diff
--- a/hoareBinaryTree1.agda	Sat May 11 11:59:56 2024 +0900
+++ b/hoareBinaryTree1.agda	Sun May 12 22:55:14 2024 +0900
@@ -1337,21 +1337,98 @@
 RB-repl→ti (node kg ⟪ Black , vg ⟫ _ (node kp ⟪ Red , vp ⟫ .leaf .leaf)) (node kn ⟪ Black , vn ⟫ (node kg ⟪ Red , _ ⟫ .(node key₁ _ _ _) .leaf) (node kp ⟪ Red , _ ⟫ leaf _)) .kn .vn (t-node key₁ .kg .kp x x₁ x₂ x₃ x₄ x₅ ti (t-single .kp .(⟪ Red , vp ⟫))) (rbr-rotate-rl .leaf .leaf kg kp kn lt1 lt2 rbr-leaf) = t-node _ _ _ lt1 lt2 ⟪ <-trans x lt1 , ⟪ >-tr< x₂ lt1 , >-tr< x₃ lt1 ⟫ ⟫  tt tt tt (t-left _ _ x x₂ x₃ ti) (t-single _ _)
 RB-repl→ti (node kg ⟪ Black , vg ⟫ _ (node kp ⟪ Red , vp ⟫ .leaf .(node key₂ _ _ _))) (node kn ⟪ Black , vn ⟫ (node kg ⟪ Red , _ ⟫ .(node key₁ _ _ _) .leaf) (node kp ⟪ Red , _ ⟫ leaf _)) .kn .vn (t-node key₁ .kg .kp x x₁ x₂ x₃ x₄ x₅ ti (t-right .kp key₂ x₆ x₇ x₈ ti₁)) (rbr-rotate-rl .leaf .leaf kg kp kn lt1 lt2 rbr-leaf) = t-node _ _ _ lt1 lt2 ⟪ <-trans x lt1 , ⟪ >-tr< x₂ lt1 , >-tr< x₃ lt1 ⟫ ⟫  tt tt ⟪ <-trans lt2 x₆ , ⟪ <-tr> x₇ lt2 , <-tr> x₈ lt2 ⟫ ⟫   (t-left _ _ x x₂ x₃ ti) (t-right _ _ x₆ x₇ x₈ ti₁)
 RB-repl→ti (node kg ⟪ Black , vg ⟫ _ (node kp ⟪ Red , vp ⟫ .(node key₂ _ _ _) .leaf)) (node kn ⟪ Black , vn ⟫ (node kg ⟪ Red , _ ⟫ .(node key₁ _ _ _) t₂) (node kp ⟪ Red , _ ⟫ leaf _)) key value (t-node key₁ .kg .kp x x₁ x₂ x₃ x₄ x₅ ti (t-left key₂ .kp x₆ x₇ x₈ ti₁)) (rbr-rotate-rl t₂ .leaf kg kp kn lt1 lt2 trb) with RB-repl→ti _ _ _ _ ti₁ trb
-... | t-single .kn .(⟪ Red , vn ⟫) = t-node _ _ _ (proj1 rr00) (proj1 rr01) ? ? ? ? (t-left _ _ ? ? ? ?) (t-single _ _) where
+... | t-single .kn .(⟪ Red , vn ⟫) = t-node _ _ _ (proj1 rr00) (proj1 rr01)  ⟪ <-trans x (proj1 rr00) , ⟪ >-tr< x₂ (proj1 rr00) , >-tr< x₃ (proj1 rr00) ⟫ ⟫  tt tt tt (t-left _ _ x x₂ x₃ ti) (t-single _ _) where
         rr00 : (kg < kn) ∧ ⊤ ∧ ⊤
-        rr00 = RB-repl→ti> _ _ _ _ _ trb lt1 ?
+        rr00 = RB-repl→ti> _ _ _ _ _ trb lt1 x₄
         rr01 : (kn < kp) ∧ ⊤ ∧ ⊤
-        rr01 = RB-repl→ti< _ _ _ _ _ trb lt2 ?
-... | t-left key₃ .kn {v1} {v3} {t₇} {t₃} x₉ x₁₀ x₁₁ ti₀ = t-node _ _ _ (proj1 rr00) (proj1 rr01) ⟪ <-trans x (proj1 rr00) , ⟪ >-tr< x₂ (proj1 rr00) , >-tr< x₃ (proj1 rr00) ⟫ ⟫ ⟪ x₉ , ⟪ x₁₀ , x₁₁ ⟫ ⟫ tt tt (t-node _ _ _  ? ? ? ? ? ? ti ti₀) (t-single _ _) where
+        rr01 = RB-repl→ti< _ _ _ _ _ trb lt2 ⟪ x₆ , ⟪ x₇ , x₈ ⟫ ⟫
+... | t-left key₃ .kn {v1} {v3} {t₇} {t₃} x₉ x₁₀ x₁₁ ti₀ = t-node _ _ _ (proj1 rr00) (proj1 rr01) ⟪ <-trans x (proj1 rr00) , ⟪ >-tr< x₂ (proj1 rr00) , >-tr< x₃ (proj1 rr00) ⟫ ⟫ ⟪ x₉ , ⟪ x₁₀ , x₁₁ ⟫ ⟫ tt tt (t-node _ _ _  x (proj1 rr02) x₂ x₃ (proj1 (proj2 rr02)) (proj2 (proj2 rr02)) ti ti₀) (t-single _ _) where
         rr00 : (kg < kn) ∧ ((kg < key₃) ∧ tr> kg t₇ ∧ tr> kg t₃) ∧ ⊤
         rr00 = RB-repl→ti> _ _ _ _ _ trb lt1 x₄
         rr02 = proj1 (proj2 rr00)
         rr01 : (kn < kp) ∧ ((key₃ < kp) ∧ tr< kp t₇ ∧ tr< kp t₃) ∧ ⊤
         rr01 = RB-repl→ti< _ _ _ _ _ trb lt2 ⟪ x₆ , ⟪ x₇ , x₈ ⟫ ⟫
         rr03 = proj1 (proj2 rr01)
-RB-repl→ti (node kg ⟪ Black , vg ⟫ _ (node kp ⟪ Red , vp ⟫ .(node key₂ _ _ _) .(node key₃ _ _ _))) (node kn ⟪ Black , vn ⟫ (node kg ⟪ Red , _ ⟫ .(node key₁ _ _ _) t₂) (node kp ⟪ Red , _ ⟫ leaf _)) key value (t-node key₁ .kg .kp x x₁ x₂ x₃ x₄ x₅ ti (t-node key₂ .kp key₃ x₆ x₇ x₈ x₉ x₁₀ x₁₁ ti₁ ti₂)) (rbr-rotate-rl t₂ .leaf kg kp kn lt1 lt2 trb) = ?
-RB-repl→ti (node kg ⟪ Black , vg ⟫ _ (node kp ⟪ Red , vp ⟫ t₁ t₅)) (node kn ⟪ Black , vn ⟫ (node kg ⟪ Red , _ ⟫ .leaf t₂) (node kp ⟪ Red , _ ⟫ (node key₁ value₁ t₃ t₄) _)) key value (t-right .kg .kp x x₁ x₂ ti) (rbr-rotate-rl t₂ .(node key₁ value₁ t₃ t₄) kg kp kn lt1 lt2 trb) = ?
-RB-repl→ti (node kg ⟪ Black , vg ⟫ _ (node kp ⟪ Red , vp ⟫ t₁ t₅)) (node kn ⟪ Black , vn ⟫ (node kg ⟪ Red , _ ⟫ .(node key₂ _ _ _) t₂) (node kp ⟪ Red , _ ⟫ (node key₁ value₁ t₃ t₄) _)) key value (t-node key₂ .kg .kp x x₁ x₂ x₃ x₄ x₅ ti ti₁) (rbr-rotate-rl t₂ .(node key₁ value₁ t₃ t₄) kg kp kn lt1 lt2 trb) = ?
+RB-repl→ti (node kg ⟪ Black , vg ⟫ _ (node kp ⟪ Red , vp ⟫ .(node key₂ _ _ _) .(node key₃ _ _ _))) (node kn ⟪ Black , vn ⟫ (node kg ⟪ Red , _ ⟫ .(node key₁ _ _ _) t₂) (node kp ⟪ Red , _ ⟫ leaf _)) key value (t-node key₁ .kg .kp x x₁ x₂ x₃ x₄ x₅ ti (t-node key₂ .kp key₃ x₆ x₇ x₈ x₉ x₁₀ x₁₁ ti₁ ti₂)) (rbr-rotate-rl t₂ .leaf kg kp kn lt1 lt2 trb) with RB-repl→ti _ _ _ _ ti₁ trb
+... | t-single .kn .(⟪ Red , vn ⟫) = t-node _ _ _ (proj1 rr00) (proj1 rr01)  ⟪ <-trans x (proj1 rr00) , ⟪ >-tr< x₂ (proj1 rr00) , >-tr< x₃ (proj1 rr00) ⟫ ⟫  tt tt  ⟪ <-trans (proj1 rr01)  x₇ , ⟪ <-tr> x₁₀ (proj1 rr01)   , <-tr> x₁₁ (proj1 rr01) ⟫ ⟫  (t-left _ _ x x₂ x₃ ti) (t-right _ _ x₇ x₁₀ x₁₁ ti₂) where
+        rr00 : (kg < kn) ∧ ⊤ ∧ ⊤
+        rr00 = RB-repl→ti> _ _ _ _ _ trb lt1 x₄
+        rr02 = proj1 (proj2 rr00)
+        rr01 : (kn < kp) ∧ ⊤ ∧ ⊤
+        rr01 = RB-repl→ti< _ _ _ _ _ trb lt2 ⟪ x₆ , ⟪ x₈ , x₉ ⟫ ⟫
+... | t-left key₄ .kn {v1} {v3} {t₇} {t₃} x₁₂ x₁₃ x₁₄ ti₀ = t-node _ _ _ (proj1 rr00) (proj1 rr01)  ⟪ <-trans x (proj1 rr00) , ⟪ >-tr< x₂ (proj1 rr00) , >-tr< x₃ (proj1 rr00) ⟫ ⟫  ⟪ x₁₂ , ⟪ x₁₃ , x₁₄ ⟫ ⟫  tt ⟪ <-trans (proj1 rr01) x₇ , ⟪ <-tr> x₁₀ (proj1 rr01) , <-tr> x₁₁ (proj1 rr01) ⟫ ⟫  (t-node _ _ _ x (proj1 rr02) x₂ x₃ (proj1 (proj2 rr02)) (proj2 (proj2 rr02)) ti ti₀) (t-right _ _ x₇  x₁₀ x₁₁ ti₂) where
+        rr00 : (kg < kn) ∧ ((kg < key₄) ∧ tr> kg t₇ ∧ tr> kg t₃) ∧ ⊤
+        rr00 = RB-repl→ti> _ _ _ _ _ trb lt1 x₄
+        rr02 = proj1 (proj2 rr00)
+        rr01 : (kn < kp) ∧ ((key₄ < kp) ∧ tr< kp t₇ ∧ tr< kp t₃) ∧ ⊤
+        rr01 = RB-repl→ti< _ _ _ _ _ trb lt2 ⟪ x₆ , ⟪ x₈ , x₉ ⟫ ⟫
+RB-repl→ti (node kg ⟪ Black , vg ⟫ _ (node kp ⟪ Red , vp ⟫ .(node key₂ _ _ _) .leaf)) (node kn ⟪ Black , vn ⟫ (node kg ⟪ Red , _ ⟫ .leaf t₂) (node kp ⟪ Red , _ ⟫ (node key₁ value₁ t₃ t₄) _)) key value (t-right .kg .kp x x₁ x₂ (t-left key₂ .kp x₃ x₄ x₅ ti)) (rbr-rotate-rl t₂ .(node key₁ value₁ t₃ t₄) kg kp kn lt1 lt2 trb) with RB-repl→ti _ _ _ _ ti trb
+... | t-right .kn .key₁ x₆ x₇ x₈ t = t-node _ _ _ (proj1 rr00) (proj1 rr01)  tt tt  ⟪ x₆ , ⟪ x₇ , x₈ ⟫ ⟫  tt  (t-single _ _) (t-left _ _ (proj1 rr03) (proj1 (proj2 rr03)) (proj2 (proj2 rr03)) t) where
+        rr00 : (kg < kn) ∧ ⊤ ∧ ((kg < key₁) ∧ tr> kg t₃ ∧ tr> kg t₄)  
+        rr00 = RB-repl→ti> _ _ _ _ _ trb lt1 x₁
+        rr02 = proj2 (proj2 rr00)
+        rr01 : (kn < kp) ∧ ⊤ ∧ ((key₁ < kp) ∧ tr< kp t₃ ∧ tr< kp t₄)
+        rr01 = RB-repl→ti< _ _ _ _ _ trb lt2 ⟪ x₃ , ⟪ x₄ , x₅ ⟫ ⟫
+        rr03 = proj2 (proj2 rr01)
+... | t-node key₃ .kn .key₁ {v0} {v1} {v2} {t₇} {t₈} {t₁₀} x₆ x₇ x₈ x₉ x₁₀ x₁₁ t t₁ = t-node _ _ _ (proj1 rr00) (proj1 rr01)  tt ⟪ x₆ , ⟪ x₈ , x₉ ⟫ ⟫  ⟪ x₇ , ⟪ x₁₀   , x₁₁ ⟫ ⟫ tt   (t-right _ _ (proj1 rr02) (proj1 (proj2 rr02)) (proj2 (proj2 rr02)) t) (t-left _ _ (proj1 rr03) (proj1 (proj2 rr03)) (proj2 (proj2 rr03)) t₁) where
+        rr00 : (kg < kn) ∧ ((kg < key₃) ∧ tr> kg t₇ ∧ tr> kg t₈) ∧ ((kg < key₁) ∧ tr> kg t₃ ∧ tr> kg t₄)
+        rr00 = RB-repl→ti> _ _ _ _ _ trb lt1 x₁
+        rr02 = proj1 (proj2 rr00)
+        rr04 = proj2 (proj2 rr00)
+        rr01 : (kn < kp) ∧ ((key₃ < kp) ∧ tr< kp t₇ ∧ tr< kp t₈) ∧ ((key₁ < kp) ∧ tr< kp t₃ ∧ tr< kp t₄)
+        rr01 = RB-repl→ti< _ _ _ _ _ trb lt2 ⟪ x₃ , ⟪ x₄ , x₅ ⟫ ⟫
+        rr03 = proj2 (proj2 rr01)
+RB-repl→ti (node kg ⟪ Black , vg ⟫ _ (node kp ⟪ Red , vp ⟫ .(node key₂ _ _ _) .(node key₃ _ _ _))) (node kn ⟪ Black , vn ⟫ (node kg ⟪ Red , _ ⟫ .leaf t₂) (node kp ⟪ Red , _ ⟫ (node key₁ value₁ t₃ t₄) _)) key value (t-right .kg .kp x x₁ x₂ (t-node key₂ .kp key₃ x₃ x₄ x₅ x₆ x₇ x₈ ti ti₁)) (rbr-rotate-rl t₂ .(node key₁ value₁ t₃ t₄) kg kp kn lt1 lt2 trb) with RB-repl→ti _ _ _ _ ti trb
+... | t-right .kn .key₁ x₉ x₁₀ x₁₁ t = t-node _ _ _ (proj1 rr00) (proj1 rr01)  tt tt  ⟪ x₉ , ⟪ x₁₀ , x₁₁ ⟫ ⟫  ⟪ <-trans (proj1 rr01) x₄ , ⟪ <-tr> x₇ (proj1 rr01) , <-tr> x₈ (proj1 rr01)  ⟫ ⟫  (t-single _ _) (t-node _ _ _ (proj1 rr03) x₄ (proj1 (proj2 rr03)) (proj2 (proj2 rr03)) x₇ x₈ t ti₁ ) where
+        rr00 : (kg < kn) ∧ ⊤ ∧ ((kg < key₁) ∧ tr> kg t₃ ∧ tr> kg t₄)
+        rr00 = RB-repl→ti> _ _ _ _ _ trb lt1 x₁
+        rr01 : (kn < kp) ∧ ⊤ ∧ ((key₁ < kp) ∧ tr< kp t₃ ∧ tr< kp t₄)
+        rr01 = RB-repl→ti< _ _ _ _ _ trb lt2 ⟪ x₃ , ⟪ x₅ , x₆ ⟫ ⟫
+        rr03 = proj2 (proj2 rr01)
+... | t-node key₄ .kn .key₁ {v0} {v1} {v2} {t₇} {t₈} {t₁₀} x₉ x₁₀ x₁₁ x₁₂ x₁₃ x₁₄ t t₁ = t-node _ _ _ (proj1 rr00) (proj1 rr01)  tt ⟪ x₉ , ⟪  x₁₁ , x₁₂ ⟫ ⟫ ⟪ x₁₀ , ⟪ x₁₃ , x₁₄ ⟫ ⟫  ⟪ <-trans (proj1 rr01) x₄ , ⟪ <-tr> x₇ (proj1 rr01) , <-tr> x₈ (proj1 rr01) ⟫ ⟫  (t-right _ _ (proj1 rr02) (proj1 (proj2 rr02)) (proj2 (proj2 rr02)) t) (t-node _ _ _ (proj1 rr04) x₄ (proj1 (proj2 rr04)) (proj2 (proj2 rr04)) x₇ x₈ t₁ ti₁ ) where
+        rr00 : (kg < kn) ∧ ((kg < key₄) ∧ tr> kg t₇ ∧ tr> kg t₈) ∧ ((kg < key₁) ∧ tr> kg t₃ ∧ tr> kg t₄)
+        rr00 = RB-repl→ti> _ _ _ _ _ trb lt1 x₁
+        rr02 = proj1 (proj2 rr00)
+        rr05 = proj2 (proj2 rr00)
+        rr01 : (kn < kp) ∧ ((key₄ < kp) ∧ tr< kp t₇ ∧ tr< kp t₈) ∧ ((key₁ < kp) ∧ tr< kp t₃ ∧ tr< kp t₄)
+        rr01 = RB-repl→ti< _ _ _ _ _ trb lt2 ⟪ x₃ , ⟪ x₅ , x₆ ⟫ ⟫
+        rr03 = proj1 (proj2 rr01)
+        rr04 = proj2 (proj2 rr01)
+RB-repl→ti (node kg ⟪ Black , vg ⟫ _ (node kp ⟪ Red , vp ⟫ .(node key₃ _ _ _) .leaf)) (node kn ⟪ Black , vn ⟫ (node kg ⟪ Red , _ ⟫ .(node key₂ _ _ _) t₂) (node kp ⟪ Red , _ ⟫ (node key₁ value₁ t₃ t₄) _)) key value (t-node key₂ .kg .kp x x₁ x₂ x₃ x₄ x₅ ti (t-left key₃ .kp x₆ x₇ x₈ ti₁)) (rbr-rotate-rl t₂ .(node key₁ value₁ t₃ t₄) kg kp kn lt1 lt2 trb) with RB-repl→ti _ _ _ _ ti₁ trb
+... | t-right .kn .key₁ x₉ x₁₀ x₁₁ t = t-node _ _ _ (proj1 rr00) (proj1 rr01)  ⟪ <-trans x (proj1 rr00)  , ⟪ >-tr< x₂ (proj1 rr00)  , >-tr< x₃ (proj1 rr00) ⟫ ⟫ tt  ⟪ x₉ , ⟪ x₁₀ , x₁₁ ⟫ ⟫  tt  (t-left _ _ x  x₂ x₃ ti ) (t-left _ _ (proj1 rr03) (proj1 (proj2 rr03)) (proj2 (proj2 rr03)) t) where
+        rr00 : (kg < kn) ∧ ⊤ ∧ ((kg < key₁) ∧ tr> kg t₃ ∧ tr> kg t₄)
+        rr00 = RB-repl→ti> _ _ _ _ _ trb lt1 x₄
+        rr02 = proj2 (proj2 rr00)
+        rr01 : (kn < kp) ∧ ⊤ ∧ ((key₁ < kp) ∧ tr< kp t₃ ∧ tr< kp t₄)
+        rr01 = RB-repl→ti< _ _ _ _ _ trb lt2 ⟪ x₆ , ⟪ x₇ , x₈ ⟫ ⟫
+        rr03 = proj2 (proj2 rr01)
+... | t-node key₄ .kn .key₁ {v0} {v1} {v2} {t₇} {t₈} {t₁₀} x₉ x₁₀ x₁₁ x₁₂ x₁₃ x₁₄ t t₁ = t-node _ _ _ (proj1 rr00) (proj1 rr01)  ⟪ <-trans x (proj1 rr00) , ⟪ >-tr< x₂ (proj1 rr00) , >-tr< x₃ (proj1 rr00) ⟫ ⟫  ⟪ x₉ , ⟪ x₁₁ , x₁₂ ⟫ ⟫  ⟪ x₁₀ , ⟪ x₁₃ , x₁₄ ⟫ ⟫  tt (t-node _ _ _ x (proj1 rr02) x₂ x₃ (proj1 (proj2 rr02)) (proj2 (proj2 rr02)) ti t) (t-left _ _ (proj1 rr04) (proj1 (proj2 rr04)) (proj2 (proj2 rr04)) t₁) where
+        rr00 : (kg < kn) ∧ ((kg < key₄) ∧ tr> kg t₇ ∧ tr> kg t₈) ∧ ((kg < key₁) ∧ tr> kg t₃ ∧ tr> kg t₄)
+        rr00 = RB-repl→ti> _ _ _ _ _ trb lt1 x₄
+        rr02 = proj1 (proj2 rr00)
+        rr05 = proj2 (proj2 rr00)
+        rr01 : (kn < kp) ∧ ((key₄ < kp) ∧ tr< kp t₇ ∧ tr< kp t₈) ∧ ((key₁ < kp) ∧ tr< kp t₃ ∧ tr< kp t₄)
+        rr01 = RB-repl→ti< _ _ _ _ _ trb lt2 ⟪ x₆ , ⟪ x₇ , x₈ ⟫ ⟫
+        rr03 = proj1 (proj2 rr01)
+        rr04 = proj2 (proj2 rr01)
+RB-repl→ti (node kg ⟪ Black , vg ⟫ _ (node kp ⟪ Red , vp ⟫ .(node key₃ _ _ _) .(node key₄ _ _ _))) (node kn ⟪ Black , vn ⟫ (node kg ⟪ Red , _ ⟫ .(node key₂ _ _ _) t₂) (node kp ⟪ Red , _ ⟫ (node key₁ value₁ t₃ t₄) _)) key value (t-node key₂ .kg .kp x x₁ x₂ x₃ x₄ x₅ ti (t-node key₃ .kp key₄ x₆ x₇ x₈ x₉ x₁₀ x₁₁ ti₁ ti₂)) (rbr-rotate-rl t₂ .(node key₁ value₁ t₃ t₄) kg kp kn lt1 lt2 trb) with RB-repl→ti _ _ _ _ ti₁ trb
+... | t-right .kn .key₁ x₁₂ x₁₃ x₁₄ t = t-node _ _ _ (proj1 rr00) (proj1 rr01)   ⟪ <-trans x (proj1 rr00) , ⟪ >-tr< x₂ (proj1 rr00) , >-tr< x₃ (proj1 rr00) ⟫ ⟫ tt  ⟪  x₁₂  , ⟪  x₁₃  , x₁₄  ⟫ ⟫  ⟪ <-trans (proj1 rr01) x₇ , ⟪ <-tr> x₁₀ (proj1 rr01) , <-tr> x₁₁ (proj1 rr01) ⟫ ⟫  (t-left _ _ x x₂ x₃ ti) (t-node _ _ _ (proj1 rr03) x₇ (proj1 (proj2 rr03)) (proj2 (proj2 rr03)) x₁₀ x₁₁ t ti₂ ) where
+        rr00 : (kg < kn) ∧ ⊤ ∧ ((kg < key₁) ∧ tr> kg t₃ ∧ tr> kg t₄)
+        rr00 = RB-repl→ti> _ _ _ _ _ trb lt1 x₄
+        rr02 = proj2 (proj2 rr00)
+        rr01 : (kn < kp) ∧ ⊤ ∧ ((key₁ < kp) ∧ tr< kp t₃ ∧ tr< kp t₄)
+        rr01 = RB-repl→ti< _ _ _ _ _ trb lt2 ⟪ x₆ , ⟪ x₈ , x₉ ⟫ ⟫
+        rr03 = proj2 (proj2 rr01)
+... | t-node key₅ .kn .key₁ {v0} {v1} {v2} {t₇} {t₈} {t₁₀} x₁₂ x₁₃ x₁₄ x₁₅ x₁₆ x₁₇ t t₁ = t-node _ _ _ (proj1 rr00) (proj1 rr01)  ⟪ <-trans x (proj1 rr00) , ⟪ >-tr< x₂ (proj1 rr00)  , >-tr< x₃ (proj1 rr00) ⟫ ⟫  ⟪ x₁₂ , ⟪ x₁₄ , x₁₅ ⟫ ⟫  ⟪ x₁₃ , ⟪ x₁₆ , x₁₇ ⟫ ⟫  ⟪ <-trans (proj1 rr01) x₇  , ⟪ <-tr> x₁₀ (proj1 rr01) , <-tr> x₁₁ (proj1 rr01) ⟫ ⟫   (t-node _ _ _ x (proj1 rr02) x₂  x₃ (proj1 (proj2 rr02)) (proj2 (proj2 rr02)) ti t ) (t-node _ _ _ (proj1 rr04) x₇ (proj1 (proj2 rr04)) (proj2 (proj2 rr04)) x₁₀ x₁₁ t₁ ti₂ ) where
+        rr00 : (kg < kn) ∧ ((kg < key₅) ∧ tr> kg t₇ ∧ tr> kg t₈) ∧ ((kg < key₁) ∧ tr> kg t₃ ∧ tr> kg t₄)
+        rr00 = RB-repl→ti> _ _ _ _ _ trb lt1 x₄
+        rr02 = proj1 (proj2 rr00)
+        rr05 = proj2 (proj2 rr00)
+        rr01 : (kn < kp) ∧ ((key₅ < kp) ∧ tr< kp t₇ ∧ tr< kp t₈) ∧ ((key₁ < kp) ∧ tr< kp t₃ ∧ tr< kp t₄)
+        rr01 = RB-repl→ti< _ _ _ _ _ trb lt2 ⟪ x₆ , ⟪ x₈ , x₉ ⟫ ⟫
+        rr03 = proj1 (proj2 rr01)
+        rr04 = proj2 (proj2 rr01)
+
 
 --
 -- if we consider tree invariant, this may be much simpler and faster