vars m : Type -> Type; a : Type

op ret : a -> m a

var state : Type

type ST state a := state ->? a * state

var x : a

vars p : ST state a; b : Type; q : a ->? ST state b

op __>>=__ : m a * (a -> m b) -> m b

type

ST : Type -> Type -> Type

type

ST := \ state : Type . \ a : Type . state ->? a * state

vars

a : Type %(var_2)%;

b : Type %(var_12)%;

m : Type -> Type %(var_1)%;

state : Type %(var_3)%

op __>>=__ : forall m : Type -> Type; a : Type; b : Type

. m a * (a -> m b) -> m b

%(op)%

op ret : forall m : Type -> Type; a : Type . a -> m a %(op)%

vars

p : ST state a;

q : a ->? ST state b;

x : a

### Hint 1.7, is type variable 'm'

### Hint 1.24, is type variable 'a'

### Hint 3.7, is type variable 'state'

### Hint 4.30,

no kind found for 'a'

expected: {Cpo}

found: {Type}

### Hint 4.30,

no kind found for 'a'

expected: {Cppo}

found: {Type}

### Hint 5.7, not a class 'a'

### Hint 6.8-6.14,

in type of '(op ret : forall m : Type -> Type; a : Type . a -> m a) (var x : a)

: ST state a'

typename 'a' (5.9)

is not unifiable with type 'a * state' (6.25)

### Hint 6.8-6.14,

untypeable term (with type: ? _v6_a) 'ret x : ST state a'

*** Error 6.3, no typing for 'def (ret x : ST state a)'

### Hint 8.3-8.9,

in type of '(op ret : forall m : Type -> Type; a : Type . a -> m a) (var x : a)

: ST state a'

typename 'a' (5.9)

is not unifiable with type 'a * state' (8.20)

### Hint 8.3-8.42,

untypeable term (with type: ? _v9_a * ? _v9_a)

'(ret x : ST state a, \ s : state . (x, s))'

*** Error 8.3,

no typing for '(ret x : ST state a) = \ s : state . (x, s)'

### Hint 10.7, not a kind 'ST state a'

### Hint 10.21, is type variable 'b'

### Hint 10.33, not a kind 'a ->? ST state b'

### Hint 11.14-11.16,

no kind found for 'm a'

expected: {Cpo}

found: {Type}

### Hint 11.14-11.16,

no kind found for 'm a'

expected: {Cppo}

found: {Type}

### Hint 13.3-13.9,

in type of '((var p : ST state a), (var q : a ->? ST state b))'

typename 'a' (10.35)

is not unifiable with type 'a * state' (10.18)

### Hint 13.3-13.9,

untypeable term (with type: _v14_m _v15_a * (_v15_a -> _v14_m _v16_b))

'(p, q)'

### Hint 13.5-13.54,

untypeable term (with type: ? _v13_a * ? _v13_a)

'(p >>= q, \ s2 : state . let (z, s2) = p s1 in q z s2)'

*** Error 13.5,

no typing for

'p >>= q = \ s2 : state . let (z, s2) = p s1 in q z s2'