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Proof step 5 from proof write-loop-0 (previous step)

files = files1, ¬ isdir ⊦ [while err = ESUCCESS ∧ ¬ isdir do vfs_write_block#(ino1, inode, buf, ino0, dirs; ino, isdir, err, files, asynced)] (ino = 0 → files = files1)

User applied rule invariant right

And obtained the following new goals

Proof step 6:
err = ESUCCESS, files0 = files1, ¬ isdir, ¬ isdir0, ino = 0 → files = files1 ⊦ [vfs_write_block#(ino1, inode, buf, ino0, dirs; ino, isdir, err, files, asynced)] (ino = 0 → files = files1)

Rule argument

fma: ino = 0 → files = files1 pos: right 1

Additional information

Used formulas: ino = 0 → files = files1