Goal:
  
  ============================
   (false = false)


DEBUG:Going to execute:
fun => <coq-core.plugins.ltac::reflexivity@0>

Goals:
  
  ============================
   (true <> false)

  
  ============================
   (false <> true)


DEBUG:Going to execute:
<coq-core.plugins.ltac::discriminate@0>