6 lines
336 B
Text
6 lines
336 B
Text
treeMap.lean:8:59-8:69: error: failed to prove termination, possible solutions:
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- Use `have`-expressions to prove the remaining goals
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- Use `termination_by` to specify a different well-founded relation
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- Use `decreasing_by` to specify your own tactic for discharging this kind of goal
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t✝ t : TreeNode
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⊢ sizeOf t < sizeOf t✝
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