Goal:
    A : Type  f : A -> bool  g : A -> bool  Hf : forall x : A, f x -> g x
  ============================
   (foroptb f None -> foroptb g None)


DEBUG:Going to execute:
<coq-core.plugins.ssreflect::ssrtclintros@0> arg
Level 0: Backtrace:

No matching clauses for match.
Level 0: Backtrace:

No applicable tactic.
Level 0: Backtrace:

No applicable tactic.
Level 0: Backtrace:

No applicable tactic.
Level 0: Backtrace:

No applicable tactic.
Level 0: Backtrace:

No applicable tactic.
Level 0: Backtrace:

No applicable tactic.
Level 0: Backtrace:

No applicable tactic.
Level 1: Backtrace:

No applicable tactic.
Level 0: Backtrace:

No applicable tactic.