Goal:
    b : byte
  ============================
   (noConfusion_byte_obligation_1 b b
      (noConfusion_byte_obligation_2 b b eq_refl) = eq_refl)


DEBUG:Going to execute:
try Tactics.program_solve_wf
Level 2: Backtrace:

Tactic failure: Proof search failed.
Level 2: Backtrace:

Tactic failure: Proof search failed.