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Proof step 18 from proof validrefs-applast-array-null (previous step)

validrefs(str, refs + r ', ty, st), type∃(str, st[r -- _type] .type) ∧ st[r -- _type] .type .jtelemtype ≠ void_type ∧ st[r -- _type] .type .jtelemtype ≠ abstract_type ∧ is_array(r, st), i < st[r -- _length] .intval, is_reftype(st[r -- _type] .type .type), 0 ≤ i, 0 < st[r -- _length] .intval ⊦ validrefs(str, refs + r ' + jvmref ', ty, st), is_referencevalue(st[r -- i '])

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 17:
0 < st[r -- _length] .intval, 0 ≤ i, is_reftype(st[r -- _type] .type .type), i < st[r -- _length] .intval, is_array(r, st), type∃(str, st[r -- _type] .type), validrefs(str, refs + r ', ty, st) ⊦ st[r -- _type] .type .jtelemtype = void_type, st[r -- _type] .type .jtelemtype = abstract_type, is_referencevalue(st[r -- i ']), validrefs(str, refs + r ' + jvmref ', ty, st)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ()]]