runTacticMustCatchExceptions.lean:2:25-2:28: error: The rfl tactic failed. Possible reasons:
- The goal is not a reflexive relation (neither `=` nor a relation with a @[refl] lemma).
- The arguments of the relation are not equal.
Try using the reflexivity lemma for your relation explicitly, e.g. `exact Eq.refl _` or
`exact HEq.rfl` etc.
a b : Nat
⊢ 1 ≤ a + b
runTacticMustCatchExceptions.lean:3:25-3:28: error: The rfl tactic failed. Possible reasons:
- The goal is not a reflexive relation (neither `=` nor a relation with a @[refl] lemma).
- The arguments of the relation are not equal.
Try using the reflexivity lemma for your relation explicitly, e.g. `exact Eq.refl _` or
`exact HEq.rfl` etc.
a b : Nat
this : 1 ≤ a + b
⊢ a + b ≤ b
runTacticMustCatchExceptions.lean:4:25-4:28: error: The rfl tactic failed. Possible reasons:
- The goal is not a reflexive relation (neither `=` nor a relation with a @[refl] lemma).
- The arguments of the relation are not equal.
Try using the reflexivity lemma for your relation explicitly, e.g. `exact Eq.refl _` or
`exact HEq.rfl` etc.
a b : Nat
this✝ : 1 ≤ a + b
this : a + b ≤ b
⊢ b ≤ 2
runTacticMustCatchExceptions.lean:9:18-9:21: error: The rfl tactic failed. Possible reasons:
- The goal is not a reflexive relation (neither `=` nor a relation with a @[refl] lemma).
- The arguments of the relation are not equal.
Try using the reflexivity lemma for your relation explicitly, e.g. `exact Eq.refl _` or
`exact HEq.rfl` etc.
a b : Nat
⊢ 1 ≤ a + b
runTacticMustCatchExceptions.lean:10:14-10:17: error: The rfl tactic failed. Possible reasons:
- The goal is not a reflexive relation (neither `=` nor a relation with a @[refl] lemma).
- The arguments of the relation are not equal.
Try using the reflexivity lemma for your relation explicitly, e.g. `exact Eq.refl _` or
`exact HEq.rfl` etc.
a b : Nat
⊢ a + b ≤ b
runTacticMustCatchExceptions.lean:11:14-11:17: error: The rfl tactic failed. Possible reasons:
- The goal is not a reflexive relation (neither `=` nor a relation with a @[refl] lemma).
- The arguments of the relation are not equal.
Try using the reflexivity lemma for your relation explicitly, e.g. `exact Eq.refl _` or
`exact HEq.rfl` etc.
a b : Nat
⊢ b ≤ 2