File "bench/check-ce/underspec.mlw", line 17, characters 27-33:
Sub-goal Loop invariant init of goal f'vc.
Prover result is: Valid.

<check_ce:categorization>Categorizations of models:
- Selected model 0: SW
  - Concrete RAC: NORMAL
  - Abstract RAC: FAILURE (loop invariant preservation at "bench/check-ce/underspec.mlw", line 17, characters 18-33)
- Checked model 1: BAD_CE
  - Concrete RAC: NORMAL
  - Abstract RAC: STUCK (failure in loop invariant preservation after last iteration at "bench/check-ce/underspec.mlw", line 17, characters 18-33)
File "bench/check-ce/underspec.mlw", line 17, characters 27-33:
Sub-goal Loop invariant preservation of goal f'vc.
Prover result is: Unknown or time/memory/step limit.
The contracts of some function or loop are too weak, for example during the
  following execution:
File int.mlw:
  Line 13:
    Constant zero initialization
    zero = 0
  Line 14:
    Constant one initialization
    one = 1
Unknown location:
    _ = ()
File underspec.mlw:
  Line 13:
    _ = ()
    Execution of main function `f` with env:
      _ = ()
      zero = 0
      one = 1
  Line 14:
    Giant-step execution of function `ref` with args:
      contents = 0
    result of `ref` = {contents= 0}
  Line 15:
    Giant-step execution of function `ref` with args:
      contents = 0
    result of `ref` = {contents= 0}
  Line 16:
    Giant-step iteration of loop
    x1 = {contents= 1}
    x2 = {contents= 400}
    i = 0
    Giant-step iteration of loop
  Line 18:
    Normal execution of function `(=)` with args:
      x = 0
      y = 0
  Line 19:
    Normal execution of function `contents` with args:
      arg = {contents= 1}
    Normal execution of function `(+)` with args:
      _ = 1
      _ = 1
  Line 17:
    Property failure at loop invariant preservation with:
      x1 = {contents= 2}
      i = 1

File "bench/check-ce/underspec.mlw", line 31, characters 14-23:
Sub-goal Postcondition of goal g'vc.
Prover result is: Valid.

<check_ce:categorization>Categorizations of models:
- Selected model 0: SW
  - Concrete RAC: NORMAL
  - Abstract RAC: FAILURE (assertion at "bench/check-ce/underspec.mlw", line 37, characters 13-18)
- Checked model 1: BAD_CE
  - Concrete RAC: NORMAL
  - Abstract RAC: STUCK (failure in postcondition of `g` at "bench/check-ce/underspec.mlw", line 31, characters 14-23)
File "bench/check-ce/underspec.mlw", line 37, characters 13-18:
Sub-goal Assertion of goal f'vc.
Prover result is: Unknown or time/memory/step limit.
The contracts of some function or loop are too weak, for example during the
  following execution:
File int.mlw:
  Line 13:
    Constant zero initialization
    zero = 0
  Line 14:
    Constant one initialization
    one = 1
File underspec.mlw:
  Line 27:
    Constant z initialization
    (giant-step) execution of unimplemented function with args:
    result = 0
    Normal execution of function `ref` with args:
      contents = 0
    Normal execution of function `ref'mk` with args:
      contents = 0
    z = {contents= 0}
Unknown location:
    _ = ()
File underspec.mlw:
  Line 34:
    _ = ()
    Execution of main function `f` with env:
      z = {contents= 0}
      _ = ()
      zero = 0
      one = 1
  Line 36:
    Normal execution of function `Tuple0` with args:
    Giant-step execution of function `g` with args:
      _ = ()
    z = {contents= 2}
    result of `g` = ()
  Line 37:
    Property failure at assertion with:
      z = {contents= 2}

