diff --git a/.gitignore b/.gitignore
index ea8c4bf7..787aa480 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,2 @@
 /target
+/tmp
diff --git a/bench/conv_eval.idr b/bench/conv_eval.idr
new file mode 100644
index 00000000..b1e11892
--- /dev/null
+++ b/bench/conv_eval.idr
@@ -0,0 +1,239 @@
+CBool : Type
+CBool = (B : Type) -> B -> B -> B
+
+toBool : CBool -> Bool
+toBool = \b => b Bool True False
+
+ctrue : CBool
+ctrue = \b, t, f => t
+
+and : CBool -> CBool -> CBool
+and = \a, b, bb, t, f => a bb (b bb t f) f
+
+CNat : Type
+CNat = (n : Type) -> (n -> n) -> n -> n
+
+add : CNat -> CNat -> CNat
+add = \a, b, n, s, z => a n s (b n s z)
+
+cmul : CNat -> CNat -> CNat
+cmul = \a, b, n, s => a n (b n s)
+
+suc : CNat -> CNat
+suc = \a, n, s, z => s (a n s z)
+
+CEq : {A : Type} -> A -> A -> Type
+CEq = \x, y => (P : A -> Type) -> P x -> P y
+
+crefl : {A : Type} -> {x : A} -> CEq {A} x x
+crefl = \p, px => px
+
+n2 : CNat
+n2 = \n, s, z => s (s z)
+
+n3 : CNat
+n3 = \n, s, z => s (s (s z))
+
+n4 : CNat
+n4 = \n, s, z => s (s (s (s z)))
+
+n5 : CNat
+n5 = \n, s, z => s (s (s (s (s z))))
+
+n10 : CNat
+n10  = cmul n2 n5
+
+n10b : CNat
+n10b = cmul n5 n2
+
+n15 : CNat
+n15 = add n10  n5
+
+n15b : CNat
+n15b   = add n10b n5
+
+n18 : CNat
+n18    = add n15  n3
+
+n18b : CNat
+n18b   = add n15b n3
+
+n19 : CNat
+n19    = add n15  n4
+
+n19b : CNat
+n19b   = add n15b n4
+
+n20 : CNat
+n20    = cmul n2 n10
+
+n20b : CNat
+n20b   = cmul n2 n10b
+
+n21 : CNat
+n21    = suc n20
+
+n21b : CNat
+n21b   = suc n20b
+
+n22 : CNat
+n22    = suc n21
+
+n22b : CNat
+n22b   = suc n21b
+
+n23 : CNat
+n23    = suc n22
+
+n23b : CNat
+n23b   = suc n22b
+
+n100 : CNat
+n100   = cmul n10   n10
+
+n100b : CNat
+n100b  = cmul n10b  n10b
+
+n10k : CNat
+n10k   = cmul n100  n100
+
+n10kb : CNat
+n10kb  = cmul n100b n100b
+
+n100k : CNat
+n100k  = cmul n10k  n10
+
+n100kb : CNat
+n100kb = cmul n10kb n10b
+
+n1M : CNat
+n1M    = cmul n10k  n100
+
+n1Mb : CNat
+n1Mb   = cmul n10kb n100b
+
+n5M : CNat
+n5M    = cmul n1M   n5
+
+n5Mb : CNat
+n5Mb   = cmul n1Mb  n5
+
+n10M : CNat
+n10M   = cmul n5M   n2
+
+n10Mb : CNat
+n10Mb  = cmul n5Mb  n2
+
+Tree : Type
+Tree = (T : Type) -> (T -> T -> T) -> T -> T
+
+leaf : Tree
+leaf = \t, n, l => l
+
+node : Tree -> Tree -> Tree
+node = \t1, t2, t, n, l => n (t1 t n l) (t2 t n l)
+
+fullTree : CNat -> Tree
+fullTree = \n => n Tree (\t => node t t) leaf
+
+-- full tree with given trees at bottom level
+fullTreeWithLeaf : Tree -> CNat -> Tree
+fullTreeWithLeaf = \bottom, n => n Tree (\t => node t t) bottom
+
+forceTree : Tree -> CBool
+forceTree = \t => t CBool and ctrue
+
+t15 : Tree
+t15  = fullTree n15
+t15b : Tree
+t15b = fullTree n15b
+t18 : Tree
+t18  = fullTree n18
+t18b : Tree
+t18b = fullTree n18b
+t19 : Tree
+t19  = fullTree n19
+t19b : Tree
+t19b = fullTree n19b
+t20 : Tree
+t20  = fullTree n20
+t20b : Tree
+t20b = fullTree n20b
+t21 : Tree
+t21  = fullTree n21
+t21b : Tree
+t21b = fullTree n21b
+t22 : Tree
+t22  = fullTree n22
+t22b : Tree
+t22b = fullTree n22b
+t23 : Tree
+t23  = fullTree n23
+t23b : Tree
+t23b = fullTree n23b
+
+-- CNat conversion
+--------------------------------------------------------------------------------
+
+convn1M : CEq Main.n1M Main.n1Mb
+convn1M = crefl
+
+-- convn5M : CEq Main.n5M Main.n5Mb
+-- convn5M = crefl
+
+-- convn10M : CEq Main.n10M Main.n10Mb
+-- convn10M = crefl
+
+-- Full tree conversion
+--------------------------------------------------------------------------------
+
+-- convt15  : CEq Main.t15  Main.t15b
+-- convt15  = crefl
+-- convt18  : CEq Main.t18  Main.t18b
+-- convt18  = crefl
+-- convt19  : CEq Main.t19  Main.t19b
+-- convt19  = crefl
+-- convt20  : CEq Main.t20  Main.t20b
+-- convt20  = crefl
+-- convt21  : CEq Main.t21  Main.t21b
+-- convt21  = crefl
+-- convt22  : CEq Main.t22  Main.t22b
+-- convt22  = crefl
+-- convt23  : CEq Main.t23  Main.t23b
+-- convt23  = crefl
+
+-- Full meta-containing tree conversion
+--------------------------------------------------------------------------------
+
+-- convmt15 : CEq Main.t15b  (fullTreeWithLeaf ? Main.n15 )
+-- convmt15 = crefl
+-- convmt18 : CEq Main.t18b  (fullTreeWithLeaf ? Main.n18 )
+-- convmt18 = crefl
+-- convmt19 : CEq Main.t19b  (fullTreeWithLeaf ? Main.n19 )
+-- convmt19 = crefl
+-- convmt20 : CEq Main.t20b  (fullTreeWithLeaf ? Main.n20 )
+-- convmt20 = crefl
+-- convmt21 : CEq Main.t21b  (fullTreeWithLeaf ? Main.n21 )
+-- convmt21 = crefl
+-- convmt22 : CEq Main.t22b  (fullTreeWithLeaf ? Main.n22 )
+-- convmt22 = crefl
+-- convmt23 : CEq Main.t23b  (fullTreeWithLeaf ? Main.n23 )
+-- convmt23 = crefl
+
+-- Full tree forcing
+--------------------------------------------------------------------------------
+
+-- forcet15 : CEq (toBool (forceTree Main.t15)) True
+-- forcet15 = crefl
+-- forcet18 : CEq (toBool (forceTree Main.t18)) True
+-- forcet18 = crefl
+-- forcet19 : CEq (toBool (forceTree Main.t19)) True
+-- forcet19 = crefl
+-- forcet20 : CEq (toBool (forceTree Main.t20)) True
+-- forcet20 = crefl
+-- forcet21 : CEq (toBool (forceTree Main.t21)) True
+-- forcet21 = crefl
+--forcet22 : CEq (toBool (forceTree Main.t22)) True
+--forcet22 = crefl
+-- forcet23 : CEq (toBool (forceTree Main.t23)) True
+-- forcet23 = crefl
diff --git a/bench/conv_eval.kind2 b/bench/conv_eval.kind2
new file mode 100644
index 00000000..682c9a27
--- /dev/null
+++ b/bench/conv_eval.kind2
@@ -0,0 +1,156 @@
+Bool : Type
+True : Bool
+False : Bool
+
+CBool : Type
+CBool = (t: Type) t -> t -> t
+
+CBool.to_bool (x : CBool) : Bool
+CBool.to_bool x = (x Bool True False)
+
+CTrue : CBool
+CTrue = @p @t @f t
+
+CFalse : CBool
+CFalse = @p @t @f f
+
+And (a: CBool) (b: CBool) : CBool
+And a b = @p @t @f (a p (b p t f) f)
+
+CNat : Type
+CNat = (n: Type) (n -> n) -> n -> n
+
+Add (a: CNat) (b: CNat) : CNat
+Add a b = @n @s @z (a n s (b n s z))
+
+CMul (a: CNat) (b: CNat) : CNat
+CMul a b = @n @s (a n (b n s))
+
+Suc (a: CNat) : CNat
+Suc a = @n @s @z (s (a n s z))
+
+CEqual (t: Type) (a: t) (b: t) : Type
+CEqual t a b = (p: t -> Type) (p a) -> (p b)
+
+CRefl (t: Type) (x: t) : (CEqual t x x)
+CRefl t x = @p @px px
+
+N0 : CNat
+N0 = @n @s @z z
+
+N2 : CNat
+N2 = @n @s @z (s (s z))
+
+N3 : CNat
+N3 = @n @s @z (s (s (s z)))
+
+N4 : CNat
+N4 = @n @s @z (s (s (s (s z))))
+
+N5 : CNat
+N5 = @n @s @z (s (s (s (s (s z)))))
+
+N10 : CNat
+N10 = (CMul N2 N5)
+
+N10b : CNat
+N10b = (CMul N5 N2)
+
+N15 : CNat
+N15 = (Add N10 N5)
+
+N15b : CNat
+N15b = (Add N10b N5)
+
+N18 : CNat
+N18 = (Add N15 N3)
+
+N18b : CNat
+N18b = (Add N15b N3)
+
+N19 : CNat
+N19 = (Add N15 N4)
+
+N19b : CNat
+N19b = (Add N15b N4)
+
+N20 : CNat
+N20 = (CMul N2 N10)
+
+N20b : CNat
+N20b = (CMul N2 N10b)
+
+N21 : CNat
+N21 = (Suc N20)
+
+N21b : CNat
+N21b = (Suc N20b)
+
+N22 : CNat
+N22 = (Suc N21)
+
+N22b : CNat
+N22b = (Suc N21b)
+
+N23 : CNat
+N23 = (Suc N22)
+
+N23b : CNat
+N23b = (Suc N22b)
+
+N100 : CNat
+N100 = (CMul N10 N10)
+
+N100b : CNat
+N100b = (CMul N10b N10b)
+
+N10k : CNat
+N10k = (CMul N100 N100)
+
+N10kb : CNat
+N10kb = (CMul N100b N100b)
+
+N100k : CNat
+N100k = (CMul N10k N10)
+
+N100kb : CNat
+N100kb = (CMul N10kb N10b)
+
+N1M : CNat
+N1M = (CMul N10k N100)
+
+N1Mb : CNat
+N1Mb = (CMul N10kb N100b)
+
+N5M : CNat
+N5M = (CMul N1M N5)
+
+N5Mb : CNat
+N5Mb = (CMul N1Mb N5)
+
+N10M : CNat
+N10M = (CMul N5M N2)
+
+N10Mb : CNat
+N10Mb = (CMul N5Mb N2)
+
+CTree : Type
+CTree = (t: Type) (t -> t -> t) -> t -> t
+
+CLeaf : CTree
+CLeaf = @t @n @l l
+
+CNode (t1: CTree) (t2: CTree) : CTree
+CNode t1 t2 = @t @n @l (n (t1 t n l) (t2 t n l))
+
+FullCTree (n: CNat) : CTree
+FullCTree n = (n CTree @t(CNode t t) CLeaf)
+
+Num : CNat
+Num = N2
+
+Force (n: CNat) : Bool
+Force n = (n Bool @x(x) True)
+
+Main : (CEqual CNat N1M N1Mb)
+Main = (CRefl CNat N1M)