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Proof step 69 from proof sources-equal (conclusion)

inv(sys) ∧ inv(sys0) ∧ eqds(sys, sources(sys, cl, d), sys0) ⊦ sources(sys, cl, d) = sources(sys0, cl, d)

User applied rule structural induction

And closed the goal!

Rule argument

[VARWITHFMAVARSARG : cl, ()]

Additional information

[[CONCRETESIMPRULES : ([CSIMPNAMEDSEQ : sources-base, , , ⊦ sources(sys, [], d) = ∅ ++ d], [CSIMPGEN : commandlist generated by [], +;])]]