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Proof step 37 from proof rightshift-8 (previous step)

i < ~128, i < 0 ⊦ # (¬ i ≤ ~256 ⊃ i2b(~1) ' + i2b(i) ';(i ≠ ~256 ⊃ int2bytes(i / 256 - 1) + i2b(i % 256) ';i2b(~1) ' + i2b(0) ')) = 1, i % 256 = 0, i / 256 = 1 + bytes2int((¬ i ≤ ~256 ⊃ i2b(~1) ' + i2b(i) ';(i ≠ ~256 ⊃ int2bytes(i / 256 - 1) + i2b(i % 256) ';i2b(~1) ' + i2b(0) ')).butlast)

Heuristic if-then-else split applied rule case distinction

And obtained the following new goals

Proof step 38:
¬ i ≤ ~256, i < ~128, i < 0 ⊦ #(i2b(~1) ' + i2b(i) ') = 1, i % 256 = 0, i / 256 = 1 + bytes2int((¬ i ≤ ~256 ⊃ i2b(~1) ' + i2b(i) ';(i ≠ ~256 ⊃ int2bytes(i / 256 - 1) + i2b(i % 256) ';i2b(~1) ' + i2b(0) ')).butlast)
Proof step 41:
i ≤ ~256, i < ~128, i < 0 ⊦ # (i ≠ ~256 ⊃ int2bytes(i / 256 - 1) + i2b(i % 256) ';i2b(~1) ' + i2b(0) ') = 1, i % 256 = 0, i / 256 = 1 + bytes2int((¬ i ≤ ~256 ⊃ i2b(~1) ' + i2b(i) ';(i ≠ ~256 ⊃ int2bytes(i / 256 - 1) + i2b(i % 256) ';i2b(~1) ' + i2b(0) ')).butlast)

Rule argument

pos: right 1

Proof step 37 from proof rightshift-8 (previous step)

Heuristic if-then-else split applied rule case distinction

And obtained the following new goals

Rule argument

Additional information