Goal:
    x : t  y : t  Heq_anonymous : false = eqb 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.