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Proof step 46 from proof validrefs-contains-null (conclusion)

⊦ validrefs(str, refs + jvmref ' + refs0, ty, st) ↔ validrefs(str, refs + jvmref ', ty, st) ∧ refs0 = []

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 45:
validrefs(str, refs + jvmref ' + refs0, ty, st) ⊦ validrefs(str, refs + jvmref ', ty, st) ∧ refs0 = []

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ (refs + refs0) + refs1 = refs + refs0 + refs1], [CSIMPSEQ : ⊦ refs + [] = refs])]]