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Proof step 12 from proof is_valid_ref-del-01 (previous step)

class+∃(str, st[r -- _type] .type .class), is_obj(r, st) ⊦ r = r0, is_obj(str, r, st -- r0), type∃(str, st[r -- _type] .type) ∧ st[r -- _type] .type .jtelemtype ≠ void_type ∧ st[r -- _type] .type .jtelemtype ≠ abstract_type ∧ is_array(r, st), is_abstract(st[r -- _type] .type .class)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 8:
⊦ is_obj(r, st) → ¬ is_array(r, st)
Proof step 11:
class+∃(str, st[r -- _type] .type .class), is_obj(r, st) ⊦ r = r0, is_obj(str, r, st -- r0), is_abstract(st[r -- _type] .type .class)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ()]]