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Proof step 2 from proof insorted (previous step)

# sortedchars ≤ pos(char, sortedchars) ⊦

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 3:
⊦ sortedchars = " !#$%&()*+-./0123456789:<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[]^_abcdefghijklmnopqrstuvwxyz|~"
Proof step 4:
# " !#$%&()*+-./0123456789:<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[]^_abcdefghijklmnopqrstuvwxyz|~" ≤ pos(char, " !#$%&()*+-./0123456789:<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[]^_abcdefghijklmnopqrstuvwxyz|~") ⊦

Rule argument

spec: string-less inst: name: Sortedchars seq: ⊦ sortedchars = " !#$%&()*+-./0123456789:<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[]^_abcdefghijklmnopqrstuvwxyz|~" subst: flags: rewrite, current

Additional information

Used terms: