Merge pull request #68 from AeneasVerif/son/update_lean

Update Lean to v4.6.0-rc1

11 files changed, 230 insertions, 655 deletions

diff --git a/tests/lean/.gitignore b/tests/lean/.gitignore
index 4d1c5853..071df2d0 100644
--- a/tests/lean/.gitignore
+++ b/tests/lean/.gitignore
@@ -1,2 +1,3 @@
 lake-packages
-build
\ No newline at end of file
+build
+.lake
\ No newline at end of file
diff --git a/tests/lean/Array/Funs.lean b/tests/lean/Array/Funs.lean
deleted file mode 100644
index 32ae6248..00000000
--- a/tests/lean/Array/Funs.lean
+++ /dev/null
@@ -1,431 +0,0 @@
--- THIS FILE WAS AUTOMATICALLY GENERATED BY AENEAS
--- [array]: function definitions
-import Base
-import Array.Types
-open Primitives
-
-namespace array
-
-/- [array::incr]: merged forward/backward function
-   (there is a single backward function, and the forward function returns ()) -/
-def incr (x : U32) : Result U32 :=
-  x + 1#u32
-
-/- [array::array_to_shared_slice_]: forward function -/
-def array_to_shared_slice_
-  (T : Type) (s : Array T 32#usize) : Result (Slice T) :=
-  Array.to_slice T 32#usize s
-
-/- [array::array_to_mut_slice_]: forward function -/
-def array_to_mut_slice_ (T : Type) (s : Array T 32#usize) : Result (Slice T) :=
-  Array.to_slice T 32#usize s
-
-/- [array::array_to_mut_slice_]: backward function 0 -/
-def array_to_mut_slice__back
-  (T : Type) (s : Array T 32#usize) (ret0 : Slice T) :
-  Result (Array T 32#usize)
-  :=
-  Array.from_slice T 32#usize s ret0
-
-/- [array::array_len]: forward function -/
-def array_len (T : Type) (s : Array T 32#usize) : Result Usize :=
-  do
-    let s0 ← Array.to_slice T 32#usize s
-    let i := Slice.len T s0
-    Result.ret i
-
-/- [array::shared_array_len]: forward function -/
-def shared_array_len (T : Type) (s : Array T 32#usize) : Result Usize :=
-  do
-    let s0 ← Array.to_slice T 32#usize s
-    let i := Slice.len T s0
-    Result.ret i
-
-/- [array::shared_slice_len]: forward function -/
-def shared_slice_len (T : Type) (s : Slice T) : Result Usize :=
-  let i := Slice.len T s
-  Result.ret i
-
-/- [array::index_array_shared]: forward function -/
-def index_array_shared
-  (T : Type) (s : Array T 32#usize) (i : Usize) : Result T :=
-  Array.index_usize T 32#usize s i
-
-/- [array::index_array_u32]: forward function -/
-def index_array_u32 (s : Array U32 32#usize) (i : Usize) : Result U32 :=
-  Array.index_usize U32 32#usize s i
-
-/- [array::index_array_copy]: forward function -/
-def index_array_copy (x : Array U32 32#usize) : Result U32 :=
-  Array.index_usize U32 32#usize x 0#usize
-
-/- [array::index_mut_array]: forward function -/
-def index_mut_array (T : Type) (s : Array T 32#usize) (i : Usize) : Result T :=
-  Array.index_usize T 32#usize s i
-
-/- [array::index_mut_array]: backward function 0 -/
-def index_mut_array_back
-  (T : Type) (s : Array T 32#usize) (i : Usize) (ret0 : T) :
-  Result (Array T 32#usize)
-  :=
-  Array.update_usize T 32#usize s i ret0
-
-/- [array::index_slice]: forward function -/
-def index_slice (T : Type) (s : Slice T) (i : Usize) : Result T :=
-  Slice.index_usize T s i
-
-/- [array::index_mut_slice]: forward function -/
-def index_mut_slice (T : Type) (s : Slice T) (i : Usize) : Result T :=
-  Slice.index_usize T s i
-
-/- [array::index_mut_slice]: backward function 0 -/
-def index_mut_slice_back
-  (T : Type) (s : Slice T) (i : Usize) (ret0 : T) : Result (Slice T) :=
-  Slice.update_usize T s i ret0
-
-/- [array::slice_subslice_shared_]: forward function -/
-def slice_subslice_shared_
-  (x : Slice U32) (y : Usize) (z : Usize) : Result (Slice U32) :=
-  core.slice.index.Slice.index U32 (core.ops.range.Range Usize)
-    (core.slice.index.Range.coresliceindexSliceIndexInst U32) x
-    { start := y, end_ := z }
-
-/- [array::slice_subslice_mut_]: forward function -/
-def slice_subslice_mut_
-  (x : Slice U32) (y : Usize) (z : Usize) : Result (Slice U32) :=
-  core.slice.index.Slice.index_mut U32 (core.ops.range.Range Usize)
-    (core.slice.index.Range.coresliceindexSliceIndexInst U32) x
-    { start := y, end_ := z }
-
-/- [array::slice_subslice_mut_]: backward function 0 -/
-def slice_subslice_mut__back
-  (x : Slice U32) (y : Usize) (z : Usize) (ret0 : Slice U32) :
-  Result (Slice U32)
-  :=
-  core.slice.index.Slice.index_mut_back U32 (core.ops.range.Range Usize)
-    (core.slice.index.Range.coresliceindexSliceIndexInst U32) x
-    { start := y, end_ := z } ret0
-
-/- [array::array_to_slice_shared_]: forward function -/
-def array_to_slice_shared_ (x : Array U32 32#usize) : Result (Slice U32) :=
-  Array.to_slice U32 32#usize x
-
-/- [array::array_to_slice_mut_]: forward function -/
-def array_to_slice_mut_ (x : Array U32 32#usize) : Result (Slice U32) :=
-  Array.to_slice U32 32#usize x
-
-/- [array::array_to_slice_mut_]: backward function 0 -/
-def array_to_slice_mut__back
-  (x : Array U32 32#usize) (ret0 : Slice U32) : Result (Array U32 32#usize) :=
-  Array.from_slice U32 32#usize x ret0
-
-/- [array::array_subslice_shared_]: forward function -/
-def array_subslice_shared_
-  (x : Array U32 32#usize) (y : Usize) (z : Usize) : Result (Slice U32) :=
-  core.array.Array.index U32 (core.ops.range.Range Usize) 32#usize
-    (core.slice.index.Slice.coreopsindexIndexInst U32 (core.ops.range.Range
-    Usize) (core.slice.index.Range.coresliceindexSliceIndexInst U32)) x
-    { start := y, end_ := z }
-
-/- [array::array_subslice_mut_]: forward function -/
-def array_subslice_mut_
-  (x : Array U32 32#usize) (y : Usize) (z : Usize) : Result (Slice U32) :=
-  core.array.Array.index_mut U32 (core.ops.range.Range Usize) 32#usize
-    (core.slice.index.Slice.coreopsindexIndexMutInst U32 (core.ops.range.Range
-    Usize) (core.slice.index.Range.coresliceindexSliceIndexInst U32)) x
-    { start := y, end_ := z }
-
-/- [array::array_subslice_mut_]: backward function 0 -/
-def array_subslice_mut__back
-  (x : Array U32 32#usize) (y : Usize) (z : Usize) (ret0 : Slice U32) :
-  Result (Array U32 32#usize)
-  :=
-  core.array.Array.index_mut_back U32 (core.ops.range.Range Usize) 32#usize
-    (core.slice.index.Slice.coreopsindexIndexMutInst U32 (core.ops.range.Range
-    Usize) (core.slice.index.Range.coresliceindexSliceIndexInst U32)) x
-    { start := y, end_ := z } ret0
-
-/- [array::index_slice_0]: forward function -/
-def index_slice_0 (T : Type) (s : Slice T) : Result T :=
-  Slice.index_usize T s 0#usize
-
-/- [array::index_array_0]: forward function -/
-def index_array_0 (T : Type) (s : Array T 32#usize) : Result T :=
-  Array.index_usize T 32#usize s 0#usize
-
-/- [array::index_index_array]: forward function -/
-def index_index_array
-  (s : Array (Array U32 32#usize) 32#usize) (i : Usize) (j : Usize) :
-  Result U32
-  :=
-  do
-    let a ← Array.index_usize (Array U32 32#usize) 32#usize s i
-    Array.index_usize U32 32#usize a j
-
-/- [array::update_update_array]: forward function -/
-def update_update_array
-  (s : Array (Array U32 32#usize) 32#usize) (i : Usize) (j : Usize) :
-  Result Unit
-  :=
-  do
-    let a ← Array.index_usize (Array U32 32#usize) 32#usize s i
-    let a0 ← Array.update_usize U32 32#usize a j 0#u32
-    let _ ← Array.update_usize (Array U32 32#usize) 32#usize s i a0
-    Result.ret ()
-
-/- [array::array_local_deep_copy]: forward function -/
-def array_local_deep_copy (x : Array U32 32#usize) : Result Unit :=
-  Result.ret ()
-
-/- [array::take_array]: forward function -/
-def take_array (a : Array U32 2#usize) : Result Unit :=
-  Result.ret ()
-
-/- [array::take_array_borrow]: forward function -/
-def take_array_borrow (a : Array U32 2#usize) : Result Unit :=
-  Result.ret ()
-
-/- [array::take_slice]: forward function -/
-def take_slice (s : Slice U32) : Result Unit :=
-  Result.ret ()
-
-/- [array::take_mut_slice]: merged forward/backward function
-   (there is a single backward function, and the forward function returns ()) -/
-def take_mut_slice (s : Slice U32) : Result (Slice U32) :=
-  Result.ret s
-
-/- [array::take_all]: forward function -/
-def take_all : Result Unit :=
-  do
-    let _ ← take_array (Array.make U32 2#usize [ 0#u32, 0#u32 ])
-    let _ ← take_array_borrow (Array.make U32 2#usize [ 0#u32, 0#u32 ])
-    let s ←
-      Array.to_slice U32 2#usize (Array.make U32 2#usize [ 0#u32, 0#u32 ])
-    let _ ← take_slice s
-    let s0 ←
-      Array.to_slice U32 2#usize (Array.make U32 2#usize [ 0#u32, 0#u32 ])
-    let s1 ← take_mut_slice s0
-    let _ ←
-      Array.from_slice U32 2#usize (Array.make U32 2#usize [ 0#u32, 0#u32 ]) s1
-    Result.ret ()
-
-/- [array::index_array]: forward function -/
-def index_array (x : Array U32 2#usize) : Result U32 :=
-  Array.index_usize U32 2#usize x 0#usize
-
-/- [array::index_array_borrow]: forward function -/
-def index_array_borrow (x : Array U32 2#usize) : Result U32 :=
-  Array.index_usize U32 2#usize x 0#usize
-
-/- [array::index_slice_u32_0]: forward function -/
-def index_slice_u32_0 (x : Slice U32) : Result U32 :=
-  Slice.index_usize U32 x 0#usize
-
-/- [array::index_mut_slice_u32_0]: forward function -/
-def index_mut_slice_u32_0 (x : Slice U32) : Result U32 :=
-  Slice.index_usize U32 x 0#usize
-
-/- [array::index_mut_slice_u32_0]: backward function 0 -/
-def index_mut_slice_u32_0_back (x : Slice U32) : Result (Slice U32) :=
-  do
-    let _ ← Slice.index_usize U32 x 0#usize
-    Result.ret x
-
-/- [array::index_all]: forward function -/
-def index_all : Result U32 :=
-  do
-    let i ← index_array (Array.make U32 2#usize [ 0#u32, 0#u32 ])
-    let i0 ← index_array (Array.make U32 2#usize [ 0#u32, 0#u32 ])
-    let i1 ← i + i0
-    let i2 ← index_array_borrow (Array.make U32 2#usize [ 0#u32, 0#u32 ])
-    let i3 ← i1 + i2
-    let s ←
-      Array.to_slice U32 2#usize (Array.make U32 2#usize [ 0#u32, 0#u32 ])
-    let i4 ← index_slice_u32_0 s
-    let i5 ← i3 + i4
-    let s0 ←
-      Array.to_slice U32 2#usize (Array.make U32 2#usize [ 0#u32, 0#u32 ])
-    let i6 ← index_mut_slice_u32_0 s0
-    let i7 ← i5 + i6
-    let s1 ← index_mut_slice_u32_0_back s0
-    let _ ←
-      Array.from_slice U32 2#usize (Array.make U32 2#usize [ 0#u32, 0#u32 ]) s1
-    Result.ret i7
-
-/- [array::update_array]: forward function -/
-def update_array (x : Array U32 2#usize) : Result Unit :=
-  do
-    let _ ← Array.update_usize U32 2#usize x 0#usize 1#u32
-    Result.ret ()
-
-/- [array::update_array_mut_borrow]: merged forward/backward function
-   (there is a single backward function, and the forward function returns ()) -/
-def update_array_mut_borrow
-  (x : Array U32 2#usize) : Result (Array U32 2#usize) :=
-  Array.update_usize U32 2#usize x 0#usize 1#u32
-
-/- [array::update_mut_slice]: merged forward/backward function
-   (there is a single backward function, and the forward function returns ()) -/
-def update_mut_slice (x : Slice U32) : Result (Slice U32) :=
-  Slice.update_usize U32 x 0#usize 1#u32
-
-/- [array::update_all]: forward function -/
-def update_all : Result Unit :=
-  do
-    let _ ← update_array (Array.make U32 2#usize [ 0#u32, 0#u32 ])
-    let x ← update_array_mut_borrow (Array.make U32 2#usize [ 0#u32, 0#u32 ])
-    let s ← Array.to_slice U32 2#usize x
-    let s0 ← update_mut_slice s
-    let _ ← Array.from_slice U32 2#usize x s0
-    Result.ret ()
-
-/- [array::range_all]: forward function -/
-def range_all : Result Unit :=
-  do
-    let s ←
-      core.array.Array.index_mut U32 (core.ops.range.Range Usize) 4#usize
-        (core.slice.index.Slice.coreopsindexIndexMutInst U32
-        (core.ops.range.Range Usize)
-        (core.slice.index.Range.coresliceindexSliceIndexInst U32))
-        (Array.make U32 4#usize [ 0#u32, 0#u32, 0#u32, 0#u32 ])
-        { start := 1#usize, end_ := 3#usize }
-    let s0 ← update_mut_slice s
-    let _ ←
-      core.array.Array.index_mut_back U32 (core.ops.range.Range Usize) 4#usize
-        (core.slice.index.Slice.coreopsindexIndexMutInst U32
-        (core.ops.range.Range Usize)
-        (core.slice.index.Range.coresliceindexSliceIndexInst U32))
-        (Array.make U32 4#usize [ 0#u32, 0#u32, 0#u32, 0#u32 ])
-        { start := 1#usize, end_ := 3#usize } s0
-    Result.ret ()
-
-/- [array::deref_array_borrow]: forward function -/
-def deref_array_borrow (x : Array U32 2#usize) : Result U32 :=
-  Array.index_usize U32 2#usize x 0#usize
-
-/- [array::deref_array_mut_borrow]: forward function -/
-def deref_array_mut_borrow (x : Array U32 2#usize) : Result U32 :=
-  Array.index_usize U32 2#usize x 0#usize
-
-/- [array::deref_array_mut_borrow]: backward function 0 -/
-def deref_array_mut_borrow_back
-  (x : Array U32 2#usize) : Result (Array U32 2#usize) :=
-  do
-    let _ ← Array.index_usize U32 2#usize x 0#usize
-    Result.ret x
-
-/- [array::take_array_t]: forward function -/
-def take_array_t (a : Array AB 2#usize) : Result Unit :=
-  Result.ret ()
-
-/- [array::non_copyable_array]: forward function -/
-def non_copyable_array : Result Unit :=
-  do
-    let _ ← take_array_t (Array.make AB 2#usize [ AB.A, AB.B ])
-    Result.ret ()
-
-/- [array::sum]: loop 0: forward function -/
-divergent def sum_loop (s : Slice U32) (sum0 : U32) (i : Usize) : Result U32 :=
-  let i0 := Slice.len U32 s
-  if i < i0
-  then
-    do
-      let i1 ← Slice.index_usize U32 s i
-      let sum1 ← sum0 + i1
-      let i2 ← i + 1#usize
-      sum_loop s sum1 i2
-  else Result.ret sum0
-
-/- [array::sum]: forward function -/
-def sum (s : Slice U32) : Result U32 :=
-  sum_loop s 0#u32 0#usize
-
-/- [array::sum2]: loop 0: forward function -/
-divergent def sum2_loop
-  (s : Slice U32) (s2 : Slice U32) (sum0 : U32) (i : Usize) : Result U32 :=
-  let i0 := Slice.len U32 s
-  if i < i0
-  then
-    do
-      let i1 ← Slice.index_usize U32 s i
-      let i2 ← Slice.index_usize U32 s2 i
-      let i3 ← i1 + i2
-      let sum1 ← sum0 + i3
-      let i4 ← i + 1#usize
-      sum2_loop s s2 sum1 i4
-  else Result.ret sum0
-
-/- [array::sum2]: forward function -/
-def sum2 (s : Slice U32) (s2 : Slice U32) : Result U32 :=
-  let i := Slice.len U32 s
-  let i0 := Slice.len U32 s2
-  if not (i = i0)
-  then Result.fail Error.panic
-  else sum2_loop s s2 0#u32 0#usize
-
-/- [array::f0]: forward function -/
-def f0 : Result Unit :=
-  do
-    let s ←
-      Array.to_slice U32 2#usize (Array.make U32 2#usize [ 1#u32, 2#u32 ])
-    let s0 ← Slice.update_usize U32 s 0#usize 1#u32
-    let _ ←
-      Array.from_slice U32 2#usize (Array.make U32 2#usize [ 1#u32, 2#u32 ]) s0
-    Result.ret ()
-
-/- [array::f1]: forward function -/
-def f1 : Result Unit :=
-  do
-    let _ ←
-      Array.update_usize U32 2#usize (Array.make U32 2#usize [ 1#u32, 2#u32 ])
-        0#usize 1#u32
-    Result.ret ()
-
-/- [array::f2]: forward function -/
-def f2 (i : U32) : Result Unit :=
-  Result.ret ()
-
-/- [array::f4]: forward function -/
-def f4 (x : Array U32 32#usize) (y : Usize) (z : Usize) : Result (Slice U32) :=
-  core.array.Array.index U32 (core.ops.range.Range Usize) 32#usize
-    (core.slice.index.Slice.coreopsindexIndexInst U32 (core.ops.range.Range
-    Usize) (core.slice.index.Range.coresliceindexSliceIndexInst U32)) x
-    { start := y, end_ := z }
-
-/- [array::f3]: forward function -/
-def f3 : Result U32 :=
-  do
-    let i ←
-      Array.index_usize U32 2#usize (Array.make U32 2#usize [ 1#u32, 2#u32 ])
-        0#usize
-    let _ ← f2 i
-    let b := Array.repeat U32 32#usize 0#u32
-    let s ←
-      Array.to_slice U32 2#usize (Array.make U32 2#usize [ 1#u32, 2#u32 ])
-    let s0 ← f4 b 16#usize 18#usize
-    sum2 s s0
-
-/- [array::SZ] -/
-def sz_body : Result Usize := Result.ret 32#usize
-def sz_c : Usize := eval_global sz_body (by simp)
-
-/- [array::f5]: forward function -/
-def f5 (x : Array U32 32#usize) : Result U32 :=
-  Array.index_usize U32 32#usize x 0#usize
-
-/- [array::ite]: forward function -/
-def ite : Result Unit :=
-  do
-    let s ←
-      Array.to_slice U32 2#usize (Array.make U32 2#usize [ 0#u32, 0#u32 ])
-    let s0 ←
-      Array.to_slice U32 2#usize (Array.make U32 2#usize [ 0#u32, 0#u32 ])
-    let s1 ← index_mut_slice_u32_0_back s0
-    let _ ←
-      Array.from_slice U32 2#usize (Array.make U32 2#usize [ 0#u32, 0#u32 ]) s1
-    let s2 ← index_mut_slice_u32_0_back s
-    let _ ←
-      Array.from_slice U32 2#usize (Array.make U32 2#usize [ 0#u32, 0#u32 ]) s2
-    Result.ret ()
-
-end array
diff --git a/tests/lean/Array/Types.lean b/tests/lean/Array/Types.lean
deleted file mode 100644
index 60fa81ab..00000000
--- a/tests/lean/Array/Types.lean
+++ /dev/null
@@ -1,13 +0,0 @@
--- THIS FILE WAS AUTOMATICALLY GENERATED BY AENEAS
--- [array]: type definitions
-import Base
-open Primitives
-
-namespace array
-
-/- [array::AB] -/
-inductive AB :=
-| A : AB
-| B : AB
-
-end array
diff --git a/tests/lean/Array.lean b/tests/lean/Arrays.lean
index 7785a208..5158ca28 100644
--- a/tests/lean/Array.lean
+++ b/tests/lean/Arrays.lean
@@ -1,29 +1,29 @@
 -- THIS FILE WAS AUTOMATICALLY GENERATED BY AENEAS
--- [array]
+-- [arrays]
 import Base
 open Primitives
 
-namespace array
+namespace arrays
 
-/- [array::AB]
-   Source: 'src/array.rs', lines 3:0-3:11 -/
+/- [arrays::AB]
+   Source: 'src/arrays.rs', lines 3:0-3:11 -/
 inductive AB :=
 | A : AB
 | B : AB
 
-/- [array::incr]:
-   Source: 'src/array.rs', lines 8:0-8:24 -/
+/- [arrays::incr]:
+   Source: 'src/arrays.rs', lines 8:0-8:24 -/
 def incr (x : U32) : Result U32 :=
   x + 1#u32
 
-/- [array::array_to_shared_slice_]:
-   Source: 'src/array.rs', lines 16:0-16:53 -/
+/- [arrays::array_to_shared_slice_]:
+   Source: 'src/arrays.rs', lines 16:0-16:53 -/
 def array_to_shared_slice_
   (T : Type) (s : Array T 32#usize) : Result (Slice T) :=
   Array.to_slice T 32#usize s
 
-/- [array::array_to_mut_slice_]:
-   Source: 'src/array.rs', lines 21:0-21:58 -/
+/- [arrays::array_to_mut_slice_]:
+   Source: 'src/arrays.rs', lines 21:0-21:58 -/
 def array_to_mut_slice_
   (T : Type) (s : Array T 32#usize) :
   Result ((Slice T) × (Slice T → Result (Array T 32#usize)))
@@ -32,46 +32,46 @@ def array_to_mut_slice_
   let (s1, to_slice_mut_back) ← Array.to_slice_mut T 32#usize s
   Result.ret (s1, to_slice_mut_back)
 
-/- [array::array_len]:
-   Source: 'src/array.rs', lines 25:0-25:40 -/
+/- [arrays::array_len]:
+   Source: 'src/arrays.rs', lines 25:0-25:40 -/
 def array_len (T : Type) (s : Array T 32#usize) : Result Usize :=
   do
   let s1 ← Array.to_slice T 32#usize s
   let i := Slice.len T s1
   Result.ret i
 
-/- [array::shared_array_len]:
-   Source: 'src/array.rs', lines 29:0-29:48 -/
+/- [arrays::shared_array_len]:
+   Source: 'src/arrays.rs', lines 29:0-29:48 -/
 def shared_array_len (T : Type) (s : Array T 32#usize) : Result Usize :=
   do
   let s1 ← Array.to_slice T 32#usize s
   let i := Slice.len T s1
   Result.ret i
 
-/- [array::shared_slice_len]:
-   Source: 'src/array.rs', lines 33:0-33:44 -/
+/- [arrays::shared_slice_len]:
+   Source: 'src/arrays.rs', lines 33:0-33:44 -/
 def shared_slice_len (T : Type) (s : Slice T) : Result Usize :=
   let i := Slice.len T s
   Result.ret i
 
-/- [array::index_array_shared]:
-   Source: 'src/array.rs', lines 37:0-37:57 -/
+/- [arrays::index_array_shared]:
+   Source: 'src/arrays.rs', lines 37:0-37:57 -/
 def index_array_shared
   (T : Type) (s : Array T 32#usize) (i : Usize) : Result T :=
   Array.index_usize T 32#usize s i
 
-/- [array::index_array_u32]:
-   Source: 'src/array.rs', lines 44:0-44:53 -/
+/- [arrays::index_array_u32]:
+   Source: 'src/arrays.rs', lines 44:0-44:53 -/
 def index_array_u32 (s : Array U32 32#usize) (i : Usize) : Result U32 :=
   Array.index_usize U32 32#usize s i
 
-/- [array::index_array_copy]:
-   Source: 'src/array.rs', lines 48:0-48:45 -/
+/- [arrays::index_array_copy]:
+   Source: 'src/arrays.rs', lines 48:0-48:45 -/
 def index_array_copy (x : Array U32 32#usize) : Result U32 :=
   Array.index_usize U32 32#usize x 0#usize
 
-/- [array::index_mut_array]:
-   Source: 'src/array.rs', lines 52:0-52:62 -/
+/- [arrays::index_mut_array]:
+   Source: 'src/arrays.rs', lines 52:0-52:62 -/
 def index_mut_array
   (T : Type) (s : Array T 32#usize) (i : Usize) :
   Result (T × (T → Result (Array T 32#usize)))
@@ -80,13 +80,13 @@ def index_mut_array
   let (t, index_mut_back) ← Array.index_mut_usize T 32#usize s i
   Result.ret (t, index_mut_back)
 
-/- [array::index_slice]:
-   Source: 'src/array.rs', lines 56:0-56:46 -/
+/- [arrays::index_slice]:
+   Source: 'src/arrays.rs', lines 56:0-56:46 -/
 def index_slice (T : Type) (s : Slice T) (i : Usize) : Result T :=
   Slice.index_usize T s i
 
-/- [array::index_mut_slice]:
-   Source: 'src/array.rs', lines 60:0-60:58 -/
+/- [arrays::index_mut_slice]:
+   Source: 'src/arrays.rs', lines 60:0-60:58 -/
 def index_mut_slice
   (T : Type) (s : Slice T) (i : Usize) :
   Result (T × (T → Result (Slice T)))
@@ -95,16 +95,16 @@ def index_mut_slice
   let (t, index_mut_back) ← Slice.index_mut_usize T s i
   Result.ret (t, index_mut_back)
 
-/- [array::slice_subslice_shared_]:
-   Source: 'src/array.rs', lines 64:0-64:70 -/
+/- [arrays::slice_subslice_shared_]:
+   Source: 'src/arrays.rs', lines 64:0-64:70 -/
 def slice_subslice_shared_
   (x : Slice U32) (y : Usize) (z : Usize) : Result (Slice U32) :=
   core.slice.index.Slice.index U32 (core.ops.range.Range Usize)
     (core.slice.index.SliceIndexRangeUsizeSliceTInst U32) x
     { start := y, end_ := z }
 
-/- [array::slice_subslice_mut_]:
-   Source: 'src/array.rs', lines 68:0-68:75 -/
+/- [arrays::slice_subslice_mut_]:
+   Source: 'src/arrays.rs', lines 68:0-68:75 -/
 def slice_subslice_mut_
   (x : Slice U32) (y : Usize) (z : Usize) :
   Result ((Slice U32) × (Slice U32 → Result (Slice U32)))
@@ -116,13 +116,13 @@ def slice_subslice_mut_
       { start := y, end_ := z }
   Result.ret (s, index_mut_back)
 
-/- [array::array_to_slice_shared_]:
-   Source: 'src/array.rs', lines 72:0-72:54 -/
+/- [arrays::array_to_slice_shared_]:
+   Source: 'src/arrays.rs', lines 72:0-72:54 -/
 def array_to_slice_shared_ (x : Array U32 32#usize) : Result (Slice U32) :=
   Array.to_slice U32 32#usize x
 
-/- [array::array_to_slice_mut_]:
-   Source: 'src/array.rs', lines 76:0-76:59 -/
+/- [arrays::array_to_slice_mut_]:
+   Source: 'src/arrays.rs', lines 76:0-76:59 -/
 def array_to_slice_mut_
   (x : Array U32 32#usize) :
   Result ((Slice U32) × (Slice U32 → Result (Array U32 32#usize)))
@@ -131,8 +131,8 @@ def array_to_slice_mut_
   let (s, to_slice_mut_back) ← Array.to_slice_mut U32 32#usize x
   Result.ret (s, to_slice_mut_back)
 
-/- [array::array_subslice_shared_]:
-   Source: 'src/array.rs', lines 80:0-80:74 -/
+/- [arrays::array_subslice_shared_]:
+   Source: 'src/arrays.rs', lines 80:0-80:74 -/
 def array_subslice_shared_
   (x : Array U32 32#usize) (y : Usize) (z : Usize) : Result (Slice U32) :=
   core.array.Array.index U32 (core.ops.range.Range Usize) 32#usize
@@ -140,8 +140,8 @@ def array_subslice_shared_
     (core.slice.index.SliceIndexRangeUsizeSliceTInst U32)) x
     { start := y, end_ := z }
 
-/- [array::array_subslice_mut_]:
-   Source: 'src/array.rs', lines 84:0-84:79 -/
+/- [arrays::array_subslice_mut_]:
+   Source: 'src/arrays.rs', lines 84:0-84:79 -/
 def array_subslice_mut_
   (x : Array U32 32#usize) (y : Usize) (z : Usize) :
   Result ((Slice U32) × (Slice U32 → Result (Array U32 32#usize)))
@@ -154,18 +154,18 @@ def array_subslice_mut_
       { start := y, end_ := z }
   Result.ret (s, index_mut_back)
 
-/- [array::index_slice_0]:
-   Source: 'src/array.rs', lines 88:0-88:38 -/
+/- [arrays::index_slice_0]:
+   Source: 'src/arrays.rs', lines 88:0-88:38 -/
 def index_slice_0 (T : Type) (s : Slice T) : Result T :=
   Slice.index_usize T s 0#usize
 
-/- [array::index_array_0]:
-   Source: 'src/array.rs', lines 92:0-92:42 -/
+/- [arrays::index_array_0]:
+   Source: 'src/arrays.rs', lines 92:0-92:42 -/
 def index_array_0 (T : Type) (s : Array T 32#usize) : Result T :=
   Array.index_usize T 32#usize s 0#usize
 
-/- [array::index_index_array]:
-   Source: 'src/array.rs', lines 103:0-103:71 -/
+/- [arrays::index_index_array]:
+   Source: 'src/arrays.rs', lines 103:0-103:71 -/
 def index_index_array
   (s : Array (Array U32 32#usize) 32#usize) (i : Usize) (j : Usize) :
   Result U32
@@ -174,8 +174,8 @@ def index_index_array
   let a ← Array.index_usize (Array U32 32#usize) 32#usize s i
   Array.index_usize U32 32#usize a j
 
-/- [array::update_update_array]:
-   Source: 'src/array.rs', lines 114:0-114:70 -/
+/- [arrays::update_update_array]:
+   Source: 'src/arrays.rs', lines 114:0-114:70 -/
 def update_update_array
   (s : Array (Array U32 32#usize) 32#usize) (i : Usize) (j : Usize) :
   Result Unit
@@ -188,46 +188,46 @@ def update_update_array
   let _ ← index_mut_back a1
   Result.ret ()
 
-/- [array::array_local_deep_copy]:
-   Source: 'src/array.rs', lines 118:0-118:43 -/
+/- [arrays::array_local_deep_copy]:
+   Source: 'src/arrays.rs', lines 118:0-118:43 -/
 def array_local_deep_copy (x : Array U32 32#usize) : Result Unit :=
   Result.ret ()
 
-/- [array::take_array]:
-   Source: 'src/array.rs', lines 122:0-122:30 -/
+/- [arrays::take_array]:
+   Source: 'src/arrays.rs', lines 122:0-122:30 -/
 def take_array (a : Array U32 2#usize) : Result Unit :=
   Result.ret ()
 
-/- [array::take_array_borrow]:
-   Source: 'src/array.rs', lines 123:0-123:38 -/
+/- [arrays::take_array_borrow]:
+   Source: 'src/arrays.rs', lines 123:0-123:38 -/
 def take_array_borrow (a : Array U32 2#usize) : Result Unit :=
   Result.ret ()
 
-/- [array::take_slice]:
-   Source: 'src/array.rs', lines 124:0-124:28 -/
+/- [arrays::take_slice]:
+   Source: 'src/arrays.rs', lines 124:0-124:28 -/
 def take_slice (s : Slice U32) : Result Unit :=
   Result.ret ()
 
-/- [array::take_mut_slice]:
-   Source: 'src/array.rs', lines 125:0-125:36 -/
+/- [arrays::take_mut_slice]:
+   Source: 'src/arrays.rs', lines 125:0-125:36 -/
 def take_mut_slice (s : Slice U32) : Result (Slice U32) :=
   Result.ret s
 
-/- [array::const_array]:
-   Source: 'src/array.rs', lines 127:0-127:32 -/
+/- [arrays::const_array]:
+   Source: 'src/arrays.rs', lines 127:0-127:32 -/
 def const_array : Result (Array U32 2#usize) :=
   Result.ret (Array.make U32 2#usize [ 0#u32, 0#u32 ])
 
-/- [array::const_slice]:
-   Source: 'src/array.rs', lines 131:0-131:20 -/
+/- [arrays::const_slice]:
+   Source: 'src/arrays.rs', lines 131:0-131:20 -/
 def const_slice : Result Unit :=
   do
   let _ ←
     Array.to_slice U32 2#usize (Array.make U32 2#usize [ 0#u32, 0#u32 ])
   Result.ret ()
 
-/- [array::take_all]:
-   Source: 'src/array.rs', lines 141:0-141:17 -/
+/- [arrays::take_all]:
+   Source: 'src/arrays.rs', lines 141:0-141:17 -/
 def take_all : Result Unit :=
   do
   let _ ← take_array (Array.make U32 2#usize [ 0#u32, 0#u32 ])
@@ -242,30 +242,30 @@ def take_all : Result Unit :=
   let _ ← to_slice_mut_back s2
   Result.ret ()
 
-/- [array::index_array]:
-   Source: 'src/array.rs', lines 155:0-155:38 -/
+/- [arrays::index_array]:
+   Source: 'src/arrays.rs', lines 155:0-155:38 -/
 def index_array (x : Array U32 2#usize) : Result U32 :=
   Array.index_usize U32 2#usize x 0#usize
 
-/- [array::index_array_borrow]:
-   Source: 'src/array.rs', lines 158:0-158:46 -/
+/- [arrays::index_array_borrow]:
+   Source: 'src/arrays.rs', lines 158:0-158:46 -/
 def index_array_borrow (x : Array U32 2#usize) : Result U32 :=
   Array.index_usize U32 2#usize x 0#usize
 
-/- [array::index_slice_u32_0]:
-   Source: 'src/array.rs', lines 162:0-162:42 -/
+/- [arrays::index_slice_u32_0]:
+   Source: 'src/arrays.rs', lines 162:0-162:42 -/
 def index_slice_u32_0 (x : Slice U32) : Result U32 :=
   Slice.index_usize U32 x 0#usize
 
-/- [array::index_mut_slice_u32_0]:
-   Source: 'src/array.rs', lines 166:0-166:50 -/
+/- [arrays::index_mut_slice_u32_0]:
+   Source: 'src/arrays.rs', lines 166:0-166:50 -/
 def index_mut_slice_u32_0 (x : Slice U32) : Result (U32 × (Slice U32)) :=
   do
   let i ← Slice.index_usize U32 x 0#usize
   Result.ret (i, x)
 
-/- [array::index_all]:
-   Source: 'src/array.rs', lines 170:0-170:25 -/
+/- [arrays::index_all]:
+   Source: 'src/arrays.rs', lines 170:0-170:25 -/
 def index_all : Result U32 :=
   do
   let i ← index_array (Array.make U32 2#usize [ 0#u32, 0#u32 ])
@@ -284,31 +284,31 @@ def index_all : Result U32 :=
   let _ ← to_slice_mut_back s2
   Result.ret i8
 
-/- [array::update_array]:
-   Source: 'src/array.rs', lines 184:0-184:36 -/
+/- [arrays::update_array]:
+   Source: 'src/arrays.rs', lines 184:0-184:36 -/
 def update_array (x : Array U32 2#usize) : Result Unit :=
   do
   let (_, index_mut_back) ← Array.index_mut_usize U32 2#usize x 0#usize
   let _ ← index_mut_back 1#u32
   Result.ret ()
 
-/- [array::update_array_mut_borrow]:
-   Source: 'src/array.rs', lines 187:0-187:48 -/
+/- [arrays::update_array_mut_borrow]:
+   Source: 'src/arrays.rs', lines 187:0-187:48 -/
 def update_array_mut_borrow
   (x : Array U32 2#usize) : Result (Array U32 2#usize) :=
   do
   let (_, index_mut_back) ← Array.index_mut_usize U32 2#usize x 0#usize
   index_mut_back 1#u32
 
-/- [array::update_mut_slice]:
-   Source: 'src/array.rs', lines 190:0-190:38 -/
+/- [arrays::update_mut_slice]:
+   Source: 'src/arrays.rs', lines 190:0-190:38 -/
 def update_mut_slice (x : Slice U32) : Result (Slice U32) :=
   do
   let (_, index_mut_back) ← Slice.index_mut_usize U32 x 0#usize
   index_mut_back 1#u32
 
-/- [array::update_all]:
-   Source: 'src/array.rs', lines 194:0-194:19 -/
+/- [arrays::update_all]:
+   Source: 'src/arrays.rs', lines 194:0-194:19 -/
 def update_all : Result Unit :=
   do
   let _ ← update_array (Array.make U32 2#usize [ 0#u32, 0#u32 ])
@@ -319,8 +319,8 @@ def update_all : Result Unit :=
   let _ ← to_slice_mut_back s1
   Result.ret ()
 
-/- [array::range_all]:
-   Source: 'src/array.rs', lines 205:0-205:18 -/
+/- [arrays::range_all]:
+   Source: 'src/arrays.rs', lines 205:0-205:18 -/
 def range_all : Result Unit :=
   do
   let (s, index_mut_back) ←
@@ -333,33 +333,33 @@ def range_all : Result Unit :=
   let _ ← index_mut_back s1
   Result.ret ()
 
-/- [array::deref_array_borrow]:
-   Source: 'src/array.rs', lines 214:0-214:46 -/
+/- [arrays::deref_array_borrow]:
+   Source: 'src/arrays.rs', lines 214:0-214:46 -/
 def deref_array_borrow (x : Array U32 2#usize) : Result U32 :=
   Array.index_usize U32 2#usize x 0#usize
 
-/- [array::deref_array_mut_borrow]:
-   Source: 'src/array.rs', lines 219:0-219:54 -/
+/- [arrays::deref_array_mut_borrow]:
+   Source: 'src/arrays.rs', lines 219:0-219:54 -/
 def deref_array_mut_borrow
   (x : Array U32 2#usize) : Result (U32 × (Array U32 2#usize)) :=
   do
   let i ← Array.index_usize U32 2#usize x 0#usize
   Result.ret (i, x)
 
-/- [array::take_array_t]:
-   Source: 'src/array.rs', lines 227:0-227:31 -/
+/- [arrays::take_array_t]:
+   Source: 'src/arrays.rs', lines 227:0-227:31 -/
 def take_array_t (a : Array AB 2#usize) : Result Unit :=
   Result.ret ()
 
-/- [array::non_copyable_array]:
-   Source: 'src/array.rs', lines 229:0-229:27 -/
+/- [arrays::non_copyable_array]:
+   Source: 'src/arrays.rs', lines 229:0-229:27 -/
 def non_copyable_array : Result Unit :=
   do
   let _ ← take_array_t (Array.make AB 2#usize [ AB.A, AB.B ])
   Result.ret ()
 
-/- [array::sum]: loop 0:
-   Source: 'src/array.rs', lines 242:0-250:1 -/
+/- [arrays::sum]: loop 0:
+   Source: 'src/arrays.rs', lines 242:0-250:1 -/
 divergent def sum_loop (s : Slice U32) (sum1 : U32) (i : Usize) : Result U32 :=
   let i1 := Slice.len U32 s
   if i < i1
@@ -371,13 +371,13 @@ divergent def sum_loop (s : Slice U32) (sum1 : U32) (i : Usize) : Result U32 :=
     sum_loop s sum3 i3
   else Result.ret sum1
 
-/- [array::sum]:
-   Source: 'src/array.rs', lines 242:0-242:28 -/
+/- [arrays::sum]:
+   Source: 'src/arrays.rs', lines 242:0-242:28 -/
 def sum (s : Slice U32) : Result U32 :=
   sum_loop s 0#u32 0#usize
 
-/- [array::sum2]: loop 0:
-   Source: 'src/array.rs', lines 252:0-261:1 -/
+/- [arrays::sum2]: loop 0:
+   Source: 'src/arrays.rs', lines 252:0-261:1 -/
 divergent def sum2_loop
   (s : Slice U32) (s2 : Slice U32) (sum1 : U32) (i : Usize) : Result U32 :=
   let i1 := Slice.len U32 s
@@ -392,8 +392,8 @@ divergent def sum2_loop
     sum2_loop s s2 sum3 i5
   else Result.ret sum1
 
-/- [array::sum2]:
-   Source: 'src/array.rs', lines 252:0-252:41 -/
+/- [arrays::sum2]:
+   Source: 'src/arrays.rs', lines 252:0-252:41 -/
 def sum2 (s : Slice U32) (s2 : Slice U32) : Result U32 :=
   let i := Slice.len U32 s
   let i1 := Slice.len U32 s2
@@ -401,8 +401,8 @@ def sum2 (s : Slice U32) (s2 : Slice U32) : Result U32 :=
   then Result.fail .panic
   else sum2_loop s s2 0#u32 0#usize
 
-/- [array::f0]:
-   Source: 'src/array.rs', lines 263:0-263:11 -/
+/- [arrays::f0]:
+   Source: 'src/arrays.rs', lines 263:0-263:11 -/
 def f0 : Result Unit :=
   do
   let (s, to_slice_mut_back) ←
@@ -412,8 +412,8 @@ def f0 : Result Unit :=
   let _ ← to_slice_mut_back s1
   Result.ret ()
 
-/- [array::f1]:
-   Source: 'src/array.rs', lines 268:0-268:11 -/
+/- [arrays::f1]:
+   Source: 'src/arrays.rs', lines 268:0-268:11 -/
 def f1 : Result Unit :=
   do
   let (_, index_mut_back) ←
@@ -422,21 +422,21 @@ def f1 : Result Unit :=
   let _ ← index_mut_back 1#u32
   Result.ret ()
 
-/- [array::f2]:
-   Source: 'src/array.rs', lines 273:0-273:17 -/
+/- [arrays::f2]:
+   Source: 'src/arrays.rs', lines 273:0-273:17 -/
 def f2 (i : U32) : Result Unit :=
   Result.ret ()
 
-/- [array::f4]:
-   Source: 'src/array.rs', lines 282:0-282:54 -/
+/- [arrays::f4]:
+   Source: 'src/arrays.rs', lines 282:0-282:54 -/
 def f4 (x : Array U32 32#usize) (y : Usize) (z : Usize) : Result (Slice U32) :=
   core.array.Array.index U32 (core.ops.range.Range Usize) 32#usize
     (core.ops.index.IndexSliceTIInst U32 (core.ops.range.Range Usize)
     (core.slice.index.SliceIndexRangeUsizeSliceTInst U32)) x
     { start := y, end_ := z }
 
-/- [array::f3]:
-   Source: 'src/array.rs', lines 275:0-275:18 -/
+/- [arrays::f3]:
+   Source: 'src/arrays.rs', lines 275:0-275:18 -/
 def f3 : Result U32 :=
   do
   let i ←
@@ -449,18 +449,18 @@ def f3 : Result U32 :=
   let s1 ← f4 b 16#usize 18#usize
   sum2 s s1
 
-/- [array::SZ]
-   Source: 'src/array.rs', lines 286:0-286:19 -/
+/- [arrays::SZ]
+   Source: 'src/arrays.rs', lines 286:0-286:19 -/
 def sz_body : Result Usize := Result.ret 32#usize
-def sz_c : Usize := eval_global sz_body (by simp)
+def sz_c : Usize := eval_global sz_body (by decide)
 
-/- [array::f5]:
-   Source: 'src/array.rs', lines 289:0-289:31 -/
+/- [arrays::f5]:
+   Source: 'src/arrays.rs', lines 289:0-289:31 -/
 def f5 (x : Array U32 32#usize) : Result U32 :=
   Array.index_usize U32 32#usize x 0#usize
 
-/- [array::ite]:
-   Source: 'src/array.rs', lines 294:0-294:12 -/
+/- [arrays::ite]:
+   Source: 'src/arrays.rs', lines 294:0-294:12 -/
 def ite : Result Unit :=
   do
   let (s, to_slice_mut_back) ←
@@ -473,4 +473,4 @@ def ite : Result Unit :=
   let _ ← to_slice_mut_back s1
   Result.ret ()
 
-end array
+end arrays
diff --git a/tests/lean/Constants.lean b/tests/lean/Constants.lean
index 2912805f..4c626ab3 100644
--- a/tests/lean/Constants.lean
+++ b/tests/lean/Constants.lean
@@ -8,17 +8,17 @@ namespace constants
 /- [constants::X0]
    Source: 'src/constants.rs', lines 5:0-5:17 -/
 def x0_body : Result U32 := Result.ret 0#u32
-def x0_c : U32 := eval_global x0_body (by simp)
+def x0_c : U32 := eval_global x0_body (by decide)
 
 /- [constants::X1]
    Source: 'src/constants.rs', lines 7:0-7:17 -/
 def x1_body : Result U32 := Result.ret core_u32_max
-def x1_c : U32 := eval_global x1_body (by simp)
+def x1_c : U32 := eval_global x1_body (by decide)
 
 /- [constants::X2]
    Source: 'src/constants.rs', lines 10:0-10:17 -/
 def x2_body : Result U32 := Result.ret 3#u32
-def x2_c : U32 := eval_global x2_body (by simp)
+def x2_c : U32 := eval_global x2_body (by decide)
 
 /- [constants::incr]:
    Source: 'src/constants.rs', lines 17:0-17:32 -/
@@ -28,7 +28,7 @@ def incr (n : U32) : Result U32 :=
 /- [constants::X3]
    Source: 'src/constants.rs', lines 15:0-15:17 -/
 def x3_body : Result U32 := incr 32#u32
-def x3_c : U32 := eval_global x3_body (by simp)
+def x3_c : U32 := eval_global x3_body (by decide)
 
 /- [constants::mk_pair0]:
    Source: 'src/constants.rs', lines 23:0-23:51 -/
@@ -49,22 +49,22 @@ def mk_pair1 (x : U32) (y : U32) : Result (Pair U32 U32) :=
 /- [constants::P0]
    Source: 'src/constants.rs', lines 31:0-31:24 -/
 def p0_body : Result (U32 × U32) := mk_pair0 0#u32 1#u32
-def p0_c : (U32 × U32) := eval_global p0_body (by simp)
+def p0_c : (U32 × U32) := eval_global p0_body (by decide)
 
 /- [constants::P1]
    Source: 'src/constants.rs', lines 32:0-32:28 -/
 def p1_body : Result (Pair U32 U32) := mk_pair1 0#u32 1#u32
-def p1_c : Pair U32 U32 := eval_global p1_body (by simp)
+def p1_c : Pair U32 U32 := eval_global p1_body (by decide)
 
 /- [constants::P2]
    Source: 'src/constants.rs', lines 33:0-33:24 -/
 def p2_body : Result (U32 × U32) := Result.ret (0#u32, 1#u32)
-def p2_c : (U32 × U32) := eval_global p2_body (by simp)
+def p2_c : (U32 × U32) := eval_global p2_body (by decide)
 
 /- [constants::P3]
    Source: 'src/constants.rs', lines 34:0-34:28 -/
 def p3_body : Result (Pair U32 U32) := Result.ret { x := 0#u32, y := 1#u32 }
-def p3_c : Pair U32 U32 := eval_global p3_body (by simp)
+def p3_c : Pair U32 U32 := eval_global p3_body (by decide)
 
 /- [constants::Wrap]
    Source: 'src/constants.rs', lines 49:0-49:18 -/
@@ -79,7 +79,7 @@ def Wrap.new (T : Type) (value : T) : Result (Wrap T) :=
 /- [constants::Y]
    Source: 'src/constants.rs', lines 41:0-41:22 -/
 def y_body : Result (Wrap I32) := Wrap.new I32 2#i32
-def y_c : Wrap I32 := eval_global y_body (by simp)
+def y_c : Wrap I32 := eval_global y_body (by decide)
 
 /- [constants::unwrap_y]:
    Source: 'src/constants.rs', lines 43:0-43:30 -/
@@ -89,12 +89,12 @@ def unwrap_y : Result I32 :=
 /- [constants::YVAL]
    Source: 'src/constants.rs', lines 47:0-47:19 -/
 def yval_body : Result I32 := unwrap_y
-def yval_c : I32 := eval_global yval_body (by simp)
+def yval_c : I32 := eval_global yval_body (by decide)
 
 /- [constants::get_z1::Z1]
    Source: 'src/constants.rs', lines 62:4-62:17 -/
 def get_z1_z1_body : Result I32 := Result.ret 3#i32
-def get_z1_z1_c : I32 := eval_global get_z1_z1_body (by simp)
+def get_z1_z1_c : I32 := eval_global get_z1_z1_body (by decide)
 
 /- [constants::get_z1]:
    Source: 'src/constants.rs', lines 61:0-61:28 -/
@@ -109,17 +109,17 @@ def add (a : I32) (b : I32) : Result I32 :=
 /- [constants::Q1]
    Source: 'src/constants.rs', lines 74:0-74:17 -/
 def q1_body : Result I32 := Result.ret 5#i32
-def q1_c : I32 := eval_global q1_body (by simp)
+def q1_c : I32 := eval_global q1_body (by decide)
 
 /- [constants::Q2]
    Source: 'src/constants.rs', lines 75:0-75:17 -/
 def q2_body : Result I32 := Result.ret q1_c
-def q2_c : I32 := eval_global q2_body (by simp)
+def q2_c : I32 := eval_global q2_body (by decide)
 
 /- [constants::Q3]
    Source: 'src/constants.rs', lines 76:0-76:17 -/
 def q3_body : Result I32 := add q2_c 3#i32
-def q3_c : I32 := eval_global q3_body (by simp)
+def q3_c : I32 := eval_global q3_body (by decide)
 
 /- [constants::get_z2]:
    Source: 'src/constants.rs', lines 70:0-70:28 -/
@@ -132,21 +132,21 @@ def get_z2 : Result I32 :=
 /- [constants::S1]
    Source: 'src/constants.rs', lines 80:0-80:18 -/
 def s1_body : Result U32 := Result.ret 6#u32
-def s1_c : U32 := eval_global s1_body (by simp)
+def s1_c : U32 := eval_global s1_body (by decide)
 
 /- [constants::S2]
    Source: 'src/constants.rs', lines 81:0-81:18 -/
 def s2_body : Result U32 := incr s1_c
-def s2_c : U32 := eval_global s2_body (by simp)
+def s2_c : U32 := eval_global s2_body (by decide)
 
 /- [constants::S3]
    Source: 'src/constants.rs', lines 82:0-82:29 -/
 def s3_body : Result (Pair U32 U32) := Result.ret p3_c
-def s3_c : Pair U32 U32 := eval_global s3_body (by simp)
+def s3_c : Pair U32 U32 := eval_global s3_body (by decide)
 
 /- [constants::S4]
    Source: 'src/constants.rs', lines 83:0-83:29 -/
 def s4_body : Result (Pair U32 U32) := mk_pair1 7#u32 8#u32
-def s4_c : Pair U32 U32 := eval_global s4_body (by simp)
+def s4_c : Pair U32 U32 := eval_global s4_body (by decide)
 
 end constants
diff --git a/tests/lean/NoNestedBorrows.lean b/tests/lean/NoNestedBorrows.lean
index 0dd29429..bed71d94 100644
--- a/tests/lean/NoNestedBorrows.lean
+++ b/tests/lean/NoNestedBorrows.lean
@@ -139,12 +139,12 @@ def mix_arith_i32 (x : I32) (y : I32) (z : I32) : Result I32 :=
 /- [no_nested_borrows::CONST0]
    Source: 'src/no_nested_borrows.rs', lines 125:0-125:23 -/
 def const0_body : Result Usize := 1#usize + 1#usize
-def const0_c : Usize := eval_global const0_body (by simp)
+def const0_c : Usize := eval_global const0_body (by decide)
 
 /- [no_nested_borrows::CONST1]
    Source: 'src/no_nested_borrows.rs', lines 126:0-126:23 -/
 def const1_body : Result Usize := 2#usize * 2#usize
-def const1_c : Usize := eval_global const1_body (by simp)
+def const1_c : Usize := eval_global const1_body (by decide)
 
 /- [no_nested_borrows::cast_u32_to_i32]:
    Source: 'src/no_nested_borrows.rs', lines 128:0-128:37 -/
diff --git a/tests/lean/Traits.lean b/tests/lean/Traits.lean
index d32aba86..3ef4febc 100644
--- a/tests/lean/Traits.lean
+++ b/tests/lean/Traits.lean
@@ -249,7 +249,7 @@ def traits.ToTypetraitsBoolWrapperTInst (T : Type) (ToTypeBoolTInst : ToType
    Source: 'src/traits.rs', lines 164:4-164:21 -/
 def with_const_ty_len2_body : Result Usize := Result.ret 32#usize
 def with_const_ty_len2_c : Usize :=
-  eval_global with_const_ty_len2_body (by simp)
+  eval_global with_const_ty_len2_body (by decide)
 
 /- Trait declaration: [traits::WithConstTy]
    Source: 'src/traits.rs', lines 161:0-161:39 -/
@@ -264,7 +264,7 @@ structure WithConstTy (Self : Type) (LEN : Usize) where
 /- [traits::{bool#8}::LEN1]
    Source: 'src/traits.rs', lines 175:4-175:21 -/
 def bool_len1_body : Result Usize := Result.ret 12#usize
-def bool_len1_c : Usize := eval_global bool_len1_body (by simp)
+def bool_len1_c : Usize := eval_global bool_len1_body (by decide)
 
 /- [traits::{bool#8}::f]:
    Source: 'src/traits.rs', lines 180:4-180:39 -/
diff --git a/tests/lean/Tutorial.lean b/tests/lean/Tutorial.lean
index 840a606e..d92b2dd7 100644
--- a/tests/lean/Tutorial.lean
+++ b/tests/lean/Tutorial.lean
@@ -376,7 +376,7 @@ theorem i32_id_spec (x : I32) (h : 0 ≤ x.val) :
 --
 -- We first specify a decreasing value. Here, we state that [x], seen as a natural number,
 -- decreases at every recursive call.
-termination_by i32_id_spec x _ => x.val.toNat
+termination_by x.val.toNat
 -- And we now have to prove that it indeed decreases - you can skip this for now.
 decreasing_by
   -- We first need to "massage" the goal (in practice, all the proofs of [decreasing_by]
diff --git a/tests/lean/lake-manifest.json b/tests/lean/lake-manifest.json
index 5c20ec3b..e167e841 100644
--- a/tests/lean/lake-manifest.json
+++ b/tests/lean/lake-manifest.json
@@ -1,56 +1,74 @@
-{"version": 5,
- "packagesDir": "lake-packages",
+{"version": 7,
+ "packagesDir": ".lake/packages",
  "packages":
- [{"git":
-   {"url": "https://github.com/EdAyers/ProofWidgets4",
-    "subDir?": null,
-    "rev": "a0c2cd0ac3245a0dade4f925bcfa97e06dd84229",
-    "opts": {},
-    "name": "proofwidgets",
-    "inputRev?": "v0.0.13",
-    "inherited": true}},
-  {"path":
-   {"opts": {},
-    "name": "Base",
-    "inherited": false,
-    "dir": "./../../backends/lean"}},
-  {"git":
-   {"url": "https://github.com/mhuisi/lean4-cli.git",
-    "subDir?": null,
-    "rev": "21dac2e9cc7e3cf7da5800814787b833e680b2fd",
-    "opts": {},
-    "name": "Cli",
-    "inputRev?": "nightly",
-    "inherited": true}},
-  {"git":
-   {"url": "https://github.com/leanprover-community/mathlib4.git",
-    "subDir?": null,
-    "rev": "b639e46a19a0328adfb9b1fdf8cbe39dfc1de76b",
-    "opts": {},
-    "name": "mathlib",
-    "inputRev?": null,
-    "inherited": false}},
-  {"git":
-   {"url": "https://github.com/gebner/quote4",
-    "subDir?": null,
-    "rev": "e75daed95ad1c92af4e577fea95e234d7a8401c1",
-    "opts": {},
-    "name": "Qq",
-    "inputRev?": "master",
-    "inherited": true}},
-  {"git":
-   {"url": "https://github.com/JLimperg/aesop",
-    "subDir?": null,
-    "rev": "1a0cded2be292b5496e659b730d2accc742de098",
-    "opts": {},
-    "name": "aesop",
-    "inputRev?": "master",
-    "inherited": true}},
-  {"git":
-   {"url": "https://github.com/leanprover/std4",
-    "subDir?": null,
-    "rev": "ba5e5e3af519b4fc5221ad0fa4b2c87276f1d323",
-    "opts": {},
-    "name": "std",
-    "inputRev?": "main",
-    "inherited": true}}]}
+ [{"url": "https://github.com/leanprover/std4",
+   "type": "git",
+   "subDir": null,
+   "rev": "276953b13323ca151939eafaaec9129bf7970306",
+   "name": "std",
+   "manifestFile": "lake-manifest.json",
+   "inputRev": "main",
+   "inherited": true,
+   "configFile": "lakefile.lean"},
+  {"url": "https://github.com/leanprover-community/quote4",
+   "type": "git",
+   "subDir": null,
+   "rev": "1c88406514a636d241903e2e288d21dc6d861e01",
+   "name": "Qq",
+   "manifestFile": "lake-manifest.json",
+   "inputRev": "master",
+   "inherited": true,
+   "configFile": "lakefile.lean"},
+  {"url": "https://github.com/leanprover-community/aesop",
+   "type": "git",
+   "subDir": null,
+   "rev": "6beed82dcfbb7731d173cd517675df27d62ad0f4",
+   "name": "aesop",
+   "manifestFile": "lake-manifest.json",
+   "inputRev": "master",
+   "inherited": true,
+   "configFile": "lakefile.lean"},
+  {"url": "https://github.com/leanprover-community/ProofWidgets4",
+   "type": "git",
+   "subDir": null,
+   "rev": "af1e86cf7a37389632a02f4a111e6b501b2b818f",
+   "name": "proofwidgets",
+   "manifestFile": "lake-manifest.json",
+   "inputRev": "v0.0.27",
+   "inherited": true,
+   "configFile": "lakefile.lean"},
+  {"url": "https://github.com/leanprover/lean4-cli",
+   "type": "git",
+   "subDir": null,
+   "rev": "a751d21d4b68c999accb6fc5d960538af26ad5ec",
+   "name": "Cli",
+   "manifestFile": "lake-manifest.json",
+   "inputRev": "main",
+   "inherited": true,
+   "configFile": "lakefile.lean"},
+  {"url": "https://github.com/leanprover-community/import-graph.git",
+   "type": "git",
+   "subDir": null,
+   "rev": "8079d2d1d0e073bde42eab159c24f4c2d0d3a871",
+   "name": "importGraph",
+   "manifestFile": "lake-manifest.json",
+   "inputRev": "main",
+   "inherited": true,
+   "configFile": "lakefile.lean"},
+  {"url": "https://github.com/leanprover-community/mathlib4.git",
+   "type": "git",
+   "subDir": null,
+   "rev": "d04f8d39c0e47a0d73450b49f6c0665897cdcaf7",
+   "name": "mathlib",
+   "manifestFile": "lake-manifest.json",
+   "inputRev": null,
+   "inherited": false,
+   "configFile": "lakefile.lean"},
+  {"type": "path",
+   "name": "base",
+   "manifestFile": "lake-manifest.json",
+   "inherited": false,
+   "dir": "./../../backends/lean",
+   "configFile": "lakefile.lean"}],
+ "name": "Tests",
+ "lakeDir": ".lake"}
diff --git a/tests/lean/lakefile.lean b/tests/lean/lakefile.lean
index fef94971..781fc8b8 100644
--- a/tests/lean/lakefile.lean
+++ b/tests/lean/lakefile.lean
@@ -4,19 +4,19 @@ open Lake DSL
 require mathlib from git
   "https://github.com/leanprover-community/mathlib4.git"
 
-require Base from "../../backends/lean"
+require base from "../../backends/lean"
 
 package «tests» {}
 
-@[default_target] lean_lib tutorial
-@[default_target] lean_lib betreeMain
-@[default_target] lean_lib constants
-@[default_target] lean_lib external
-@[default_target] lean_lib hashmap
-@[default_target] lean_lib hashmapMain
-@[default_target] lean_lib loops
-@[default_target] lean_lib noNestedBorrows
-@[default_target] lean_lib paper
-@[default_target] lean_lib poloniusList
-@[default_target] lean_lib array
-@[default_target] lean_lib traits
+@[default_target] lean_lib Tutorial
+@[default_target] lean_lib BetreeMain
+@[default_target] lean_lib Constants
+@[default_target] lean_lib External
+@[default_target] lean_lib Hashmap
+@[default_target] lean_lib HashmapMain
+@[default_target] lean_lib Loops
+@[default_target] lean_lib NoNestedBorrows
+@[default_target] lean_lib Paper
+@[default_target] lean_lib PoloniusList
+@[default_target] lean_lib Arrays
+@[default_target] lean_lib Traits
diff --git a/tests/lean/lean-toolchain b/tests/lean/lean-toolchain
index fbca4d37..cfcdd327 100644
--- a/tests/lean/lean-toolchain
+++ b/tests/lean/lean-toolchain
@@ -1 +1 @@
-leanprover/lean4:v4.0.0
\ No newline at end of file
+leanprover/lean4:v4.6.0-rc1