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Proof step 5 from proof icrash-inv (previous step)

inv(istore), istore0 ⊑ istore ⊦ ∀ n. n ∈ remove-refsize0(crash(istore, istore0)) → inv(remove-refsize0(crash(istore, istore0))[n])

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 6:
inv(istore), n ∈ istore0, n ∈ istore, istore0 ⊑ istore ⊦ crash(istore, istore0)[n].ref-size = 0, inv(remove-refsize0(crash(istore, istore0))[n])

Rule argument

Additional information

Used simplifier rules: crash-index-in: ⊦ n ∈ crash(istore, istore0) ↔ n ∈ istore0;%prefix-fwd-in: ⊦ istore ⊑ istore0 ∧ n ∈ istore → n ∈ istore0; (forward) from specification ablock-store-inv[index-store]% ⊦ n ∈ remove-refsize0(istore) ↔ n ∈ istore ∧ istore[n].ref-size ≠ 0; (ws)