20 lines
648 B
Text
20 lines
648 B
Text
# Set: pp::colors
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Set: pp::unicode
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Proof state:
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A : Bool, B : Bool, H : A ∧ B ⊢ A
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## Proof state:
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no goals
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## Proof state:
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A : Bool, B : Bool, H : A ∧ B, H1 : A ⊢ B
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## stdin:15:3: error: unknown tactic 'simple2_tac'
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## stdin:15:16: error: invalid 'done' command, proof cannot be produced from this state
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Proof state:
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A : Bool, B : Bool, H : A ∧ B, H1 : A ⊢ B
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## Proof state:
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no goals
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## Proof state:
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A : Bool, B : Bool, H : A ∧ B, H1 : A, H2 : B ⊢ B ∧ A
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## stdin:18:0: error: failed to prove theorem, proof has been aborted
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Proof state:
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A : Bool, B : Bool, H : A ∧ B, H1 : A, H2 : B ⊢ B ∧ A
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# echo command after failure
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