fix: nontermination while generating equation lemmas for match-expressions
#6180
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…essions This PR fixes a non-termination bug that occurred when generating the match-expression equation theorems. The bug was triggered when the proof automation for the equation theorem repeatedly applied `injection(` to the same local declaration, as it could not be removed due to forward dependencies. See issue #6067 for an example that reproduces this issue. closes #6067
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This PR fixes a non-termination bug that occurred when generating the match-expression equation theorems. The bug was triggered when the proof automation for the equation theorem repeatedly applied
injection(to the same local declaration, as it could not be removed due to forward dependencies. See issue #6067 for an example that reproduces this issue.closes #6067