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Proof step 27 from proof sources-app (previous step)

∀ cl0, d, cl1. sources(cl0, d) = sources(cl1, d) → sources(cl2 + cl0, d) = sources(cl2 + cl1, d) ⊦ sources(cl0, d) = sources(cl1, d) → sources((co + cl2) + cl0, d) = sources((co + cl2) + cl1, d)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 26:
sources(cl0, d) = sources(cl1, d), ∀ cl0, d, cl1. sources(cl0, d) = sources(cl1, d) → sources(cl2 + cl0, d) = sources(cl2 + cl1, d) ⊦ sources((co ' + cl2) + cl0, d) = sources((co ' + cl2) + cl1, d)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPNAMEDSEQ : list, gen-command-list, c, ⊦ co + cl = co ' + cl])]]