Proof: Do Control Map At Unchanged 15

Let's prove the following theorem:

if the following are true:
  • expression state at time 15 = "begin_expr"
  • Control Map at time 15 = [ entry 0: (pair ("while", 2)), [ ] ]

then Control Map at time 16 = [ entry 0: (pair ("while", 2)), [ ] ]

Proof:

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Given
1 expression state at time 15 = "begin_expr"
2 Control Map at time 15 = [ entry 0: (pair ("while", 2)), [ ] ]
Proof Table
# Claim Reason
1 Control Map at time (15 + 1) = Control Map at time 15 if expression state at time 15 = "begin_expr", then Control Map at time (15 + 1) = Control Map at time 15
2 Control Map at time (15 + 1) = [ entry 0: (pair ("while", 2)), [ ] ] if Control Map at time (15 + 1) = Control Map at time 15 and Control Map at time 15 = [ entry 0: (pair ("while", 2)), [ ] ], then Control Map at time (15 + 1) = [ entry 0: (pair ("while", 2)), [ ] ]
3 15 + 1 = 16 15 + 1 = 16
4 Control Map at time (15 + 1) = Control Map at time 16 if 15 + 1 = 16, then Control Map at time (15 + 1) = Control Map at time 16
5 Control Map at time 16 = [ entry 0: (pair ("while", 2)), [ ] ] if Control Map at time (15 + 1) = Control Map at time 16 and Control Map at time (15 + 1) = [ entry 0: (pair ("while", 2)), [ ] ], then Control Map at time 16 = [ entry 0: (pair ("while", 2)), [ ] ]

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