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Proof step 8 from proof validref-nopath-superset (previous step)

r = jvmref ∨ r ≠ jvmref ∧ is_valid_ref(str, r, st0) ∧ st0[r -- _type] .type ≤ mkclasstype(`java.lang.Object' .class), validrefnotnull(str, r, st[r -- _type] .type, st), st ⊆ st0, newref(r, st) ⊦ r = jvmref

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 7:
validrefnotnull(str, r, st[r -- _type] .type, st), st ⊆ st0, newref(r, st), is_valid_ref(str, r, st0) ⊦ r = jvmref

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ is_valid_ref(str, r, st) ∧ r ≠ jvmref → st[r -- _type] .type ≤ mkclasstype (`java.lang.Object' .class)])]]