Goal:
    A : Type  R : ReflectEq A  x : A  y : A  Heq_anonymous : false = (x == y)
  ============================
   (x <> y)


DEBUG:Going to execute:
CoreTactics.equations_simpl
Level 2: Backtrace:

No primitive equality found.
Level 2: Backtrace:

No primitive equality found.
Level 1: Backtrace:

No primitive equality found.
Level 0: Backtrace:

No primitive equality found.
Level 1: Backtrace:

No primitive equality found.
Level 0: Backtrace:

No primitive equality found.
Level 1: Backtrace:

No primitive equality found.
Level 0: Backtrace:

No primitive equality found.
Level 0: Backtrace:

No primitive equality found.
Level 0: Backtrace:

No primitive equality found.
Level 0: Backtrace:

No primitive equality found.
Level 0: Backtrace:

No primitive equality found.
Level 0: Backtrace:

No primitive equality found.
Level 0: Backtrace:

No primitive equality found.
Level 0: Backtrace:

No applicable tactic.