File: let_function_logic.mlw

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use int.Int

function g(x:int) : int

axiom g_def : forall x. g x = x + 1

let f(x:int) : int
  ensures { result = g x }
  = x+1

let main (y:int)
  ensures { result <> 44 }
=
  let z = f y in
  z+1