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Proof step 55 from proof validrefs-primarray (previous step)

refs = r + refs0 ∧ refs ≠ [], is_primtype(ty) ⊦ validrefs(str, refs, mkarraytype(ty), st) ↔ refs = [] ∨ refs = jvmref ' ∨ okarray(r, ty, st) ∧ refs0 = []

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 54:
is_primtype(ty) ⊦ validrefs(str, r ' + refs0, mkarraytype(ty), st) ↔ r ' + refs0 = jvmref ' ∨ okarray(r, ty, st) ∧ refs0 = []

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ (refs + refs0) + refs1 = refs + refs0 + refs1], [CSIMPSEQ : ⊦ r ' + refs ≠ []], [CSIMPSEQ : ⊦ r + refs = r ' + refs])]]