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Proof step 9 from proof validrefnotnull-array-len-subset (conclusion)

⊦ st ⊆ st0 ∧ val2int(st[r -- _length]) ≠ st0[r -- _length] .intval → ¬ validrefnotnull(`docs2store', r, mkarraytype(byte_type), st)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 1:
⊦ validrefnotnull(str, r, mkarraytype(ty), st) → val2int(st[r -- _length]) = st[r -- _length] .intval
Proof step 2:
⊦ validrefnotnull(str, r, ty, st) → r ≠ jvmref
Proof step 8:
validrefnotnull(`docs2store', r, mkarraytype(byte_type), st), st ⊆ st0 ⊦ st[r -- _length] .intval = st0[r -- _length] .intval, r = jvmref

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ()]]