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Proof step 8 from proof pathex-one (previous step)

r = jvmref ∨ is_valid_ref(str, r, st) ⊦ r ' ≠ [] ∧ r ' .first = r ' .last ∧ r ' .last = r ∧ validrefs(str, r ', mkclasstype(`java.lang.Object' .class), st)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 5:
⊦ validrefs(str, jvmref ', ty, st)
Proof step 7:
is_valid_ref(str, r, st) ⊦ r = jvmref, validrefs(str, r ', mkclasstype(`java.lang.Object' .class), st)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ r ' .last = r], [CSIMPSEQ : ⊦ r ' .first = r], [CSIMPSEQ : ⊦ r ' ≠ []])]]