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Proof step 17 from proof validref-nopath-superset (previous step)

∃ refs. refs ≠ [] ∧ refs .first = r ∧ refs .last = r1 ∧ validrefs(str, refs, mkclasstype(`java.lang.Object' .class), st0), validrefnotnull(str, r, st[r -- _type] .type, st), st ⊆ st0, newref(r1, st) ⊦ r = jvmref, r1 = jvmref

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 16:
validrefs(str, refs, mkclasstype(`java.lang.Object' .class), st0), validrefnotnull(str, refs .first, st[refs .first -- _type] .type, st), st ⊆ st0, newref(refs .last, st) ⊦ refs .first = jvmref, refs .last = jvmref, refs = []

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPFORWARD : ⊦ validrefnotnull (str, r, ty, st) → r ≠ jvmref], [CSIMPFORWARD : ⊦ newref(r, st) → r ≠ jvmref])]]