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Proof step 22 from proof lastoc-C-event (previous step)

view(ev) = C, ev ∈ tr ⊦ ∃ tr0, ev0, tr1. tr = tr0 + ev0 ' + tr1 ∧ view(ev0) = C ∧ proj(tr1, Cview(view)) = []

User applied rule structural induction

And obtained the following new goals

Proof step 21:
∀ view, ev. view(ev) = C ∧ ev ∈ tr0 → (∃ tr2, ev0, tr1. tr0 = tr2 + ev0 ' + tr1 ∧ view(ev0) = C ∧ proj(tr1, Cview(view)) = []), view(ev) = C, ev ∈ ev0 + tr0 ⊦ ∃ tr2, ev, tr1. ev0 + tr0 = tr2 + ev ' + tr1 ∧ view(ev) = C ∧ proj(tr1, Cview(view)) = []

Rule argument

[VARWITHVARSEQSARG : tr, ()]

Additional information

[[CONCRETESIMPRULES : ([CSIMPGEN : trace generated by [], +;], [CSIMPSEQ : ⊦ ¬ ev ∈ []])]]