Proof: Do Variables At Unchanged 3

Let's prove the following theorem:

if the following are true:
  • expression state at time 3 = "begin_expr"
  • Variables Map at time 3 = [ ]

then Variables Map at time 4 = [ ]

Proof:

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Given
1 expression state at time 3 = "begin_expr"
2 Variables Map at time 3 = [ ]
Proof Table
# Claim Reason
1 Variables Map at time (3 + 1) = Variables Map at time 3 if expression state at time 3 = "begin_expr", then Variables Map at time (3 + 1) = Variables Map at time 3
2 Variables Map at time (3 + 1) = [ ] if Variables Map at time (3 + 1) = Variables Map at time 3 and Variables Map at time 3 = [ ], then Variables Map at time (3 + 1) = [ ]
3 3 + 1 = 4 3 + 1 = 4
4 Variables Map at time (3 + 1) = Variables Map at time 4 if 3 + 1 = 4, then Variables Map at time (3 + 1) = Variables Map at time 4
5 Variables Map at time 4 = [ ] if Variables Map at time (3 + 1) = Variables Map at time 4 and Variables Map at time (3 + 1) = [ ], then Variables Map at time 4 = [ ]

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