Strongest Postcondition
File "bench/ce/result.mlw", line 11, characters 15-38:
Sub-goal Postcondition of goal p1'vc.
Prover result is: Unknown or time/memory/step limit.
The following counterexample model has not been verified
  (not checking CE model, missing option --check-ce):
File result.mlw:
  Line 7:
    a [@field:0:contents] [@introduced] =
      {"type": "Record",
       "val":
        {"Field":
          [{"field": "contents", "value": {"type": "Integer", "val": "4"}}]}}
  Line 9:
    b [@field:0:contents] [@introduced] =
      {"type": "Record",
       "val":
        {"Field":
          [{"field": "contents", "value": {"type": "Integer", "val": "17"}}]}}
  Line 11:
    a [@field:0:contents] [@introduced] [@model_trace:a] =
      {"type": "Record",
       "val":
        {"Field":
          [{"field": "contents", "value": {"type": "Integer", "val": "21"}}]}}
    result [@introduced] = {"type": "Integer", "val": "22"}
  Line 12:
    a [@field:0:contents] [@introduced] =
      {"type": "Record",
       "val":
        {"Field":
          [{"field": "contents", "value": {"type": "Integer", "val": "21"}}]}}
    result [@introduced] = {"type": "Integer", "val": "22"}

File "bench/ce/result.mlw", line 18, characters 12-36:
Sub-goal Postcondition of goal f'vc.
Prover result is: Unknown or time/memory/step limit.
The following counterexample model has not been verified
  (not checking CE model, missing option --check-ce):
File result.mlw:
  Line 16:
    A [@at:'Old:loc:bench/ce/result.mlw:18] [@field:0:contents] [@introduced]
      [@model] [@model_trace:A] =
      {"type": "Record",
       "val":
        {"Field":
          [{"field": "contents", "value": {"type": "Integer", "val": "42"}}]}}
  Line 18:
    old A [@at:'Old] [@at:'Old:loc:bench/ce/result.mlw:18]
      [@field:0:contents] [@introduced] [@model] [@model_trace:A] =
      {"type": "Record",
       "val":
        {"Field":
          [{"field": "contents", "value": {"type": "Integer", "val": "42"}}]}}
    A [@field:0:contents] [@introduced] [@model] [@model_trace:A] =
      {"type": "Record",
       "val":
        {"Field":
          [{"field": "contents", "value": {"type": "Integer", "val": "1"}}]}}
  Line 19:
    A [@field:0:contents] [@introduced] [@model] [@model_trace:A] =
      {"type": "Record",
       "val":
        {"Field":
          [{"field": "contents", "value": {"type": "Integer", "val": "0"}}]}}
    result [@id:unused] [@introduced] [@model_trace:result] =
      {"type": "Integer", "val": "2"}
  Line 20:
    A [@field:0:contents] [@introduced] [@model] [@model_trace:A] =
      {"type": "Record",
       "val":
        {"Field":
          [{"field": "contents", "value": {"type": "Integer", "val": "1"}}]}}

