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Proof step 5 from proof pathex-levelsubset-01 (previous step)

¬ r ≠ r0, validref(str, r, ty, st), path∃(str0, r, r0, st), level⊆(str, str0) ⊦ path∃(str, r, r0, st)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 2:
⊦ path∃(str, r, r, st) ↔ r = jvmref ∨ r ≠ jvmref ∧ is_valid_ref(str, r, st)
Proof step 4:
level⊆(str, str0), validref(str, r0, ty, st), is_valid_ref(str0, r0, st) ⊦ r0 = jvmref, is_valid_ref(str, r0, st)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ()]]