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Proof step 11 from proof nopathex-badarrayfield (previous step)

refs0 = refs + r ', fs ' = _length, validrefs(str, r ' + refs0, st[r -- _type] .type, st), is_arraytype(st[r -- _type] .type) ⊦ refs0 = [], r = jvmref, type∃(str, st[r -- _type] .type)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 10:
fs ' = _length, validrefs(str, r ' + refs + r ', st[r -- _type] .type, st), is_arraytype(st[r -- _type] .type) ⊦ r = jvmref, type∃(str, st[r -- _type] .type)

Rule argument

[emptyarg]

Additional information

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