xchg byte ptr [r8 + 0x20], bl

State #	`flag`			`mem0_value`			`r8`			`rbx`
State #	Initial	Final	Δ	Initial	Final	Δ	Initial	Final	Δ	Initial	Final	Δ
100	`—`	`0x0000000000010002`	Δ	`0x00000000FFFFFFFF`	`0x00000000FFFFFFFE`	Δ	`0x00006666660100E0`	`0x00006666660100E0`	=	`0x00000000000000FE`	`0x00000000000000FF`	Δ
101	`—`	`0x0000000000010002`	Δ	`0x00000000FFFFFFFF`	`0x00000000FFFFFFFF`	=	`0x00006666660100E0`	`0x00006666660100E0`	=	`0x00000000000000FF`	`0x00000000000000FF`	=
102	`—`	`0x0000000000010002`	Δ	`0x00000000FFFFFFFF`	`0x00000000FFFFFF00`	Δ	`0x00006666660100E0`	`0x00006666660100E0`	=	`0x000000000000FF00`	`0x000000000000FFFF`	Δ
103	`—`	`0x0000000000010002`	Δ	`0x00000000FFFFFFFF`	`0x00000000FFFFFF01`	Δ	`0x00006666660100E0`	`0x00006666660100E0`	=	`0x000000000000FF01`	`0x000000000000FFFF`	Δ
104	`—`	`0x0000000000010002`	Δ	`0x00000000FFFFFFFF`	`0x00000000FFFFFF02`	Δ	`0x00006666660100E0`	`0x00006666660100E0`	=	`0x000000000000FF02`	`0x000000000000FFFF`	Δ
105	`—`	`0x0000000000010002`	Δ	`0x00000000FFFFFFFF`	`0x00000000FFFFFF80`	Δ	`0x00006666660100E0`	`0x00006666660100E0`	=	`0x000000000000FF80`	`0x000000000000FFFF`	Δ
106	`—`	`0x0000000000010002`	Δ	`0x00000000FFFFFFFF`	`0x00000000FFFFFFFE`	Δ	`0x00006666660100E0`	`0x00006666660100E0`	=	`0x000000000000FFFE`	`0x000000000000FFFF`	Δ
107	`—`	`0x0000000000010002`	Δ	`0x00000000FFFFFFFF`	`0x00000000FFFFFFFF`	=	`0x00006666660100E0`	`0x00006666660100E0`	=	`0x000000000000FFFF`	`0x000000000000FFFF`	=
108	`—`	`0x0000000000010002`	Δ	`0x00000000FFFFFFFF`	`0x00000000FFFFFF00`	Δ	`0x00006666660100E0`	`0x00006666660100E0`	=	`0x00000000FFFFFF00`	`0x00000000FFFFFFFF`	Δ
109	`—`	`0x0000000000010002`	Δ	`0x00000000FFFFFFFF`	`0x00000000FFFFFF01`	Δ	`0x00006666660100E0`	`0x00006666660100E0`	=	`0x00000000FFFFFF01`	`0x00000000FFFFFFFF`	Δ
110	`—`	`0x0000000000010002`	Δ	`0x00000000FFFFFFFF`	`0x00000000FFFFFF02`	Δ	`0x00006666660100E0`	`0x00006666660100E0`	=	`0x00000000FFFFFF02`	`0x00000000FFFFFFFF`	Δ
111	`—`	`0x0000000000010002`	Δ	`0x00000000FFFFFFFF`	`0x00000000FFFFFF80`	Δ	`0x00006666660100E0`	`0x00006666660100E0`	=	`0x00000000FFFFFF80`	`0x00000000FFFFFFFF`	Δ
112	`—`	`0x0000000000010002`	Δ	`0x00000000FFFFFFFF`	`0x00000000FFFFFFFE`	Δ	`0x00006666660100E0`	`0x00006666660100E0`	=	`0x00000000FFFFFFFE`	`0x00000000FFFFFFFF`	Δ
113	`—`	`0x0000000000010002`	Δ	`0x00000000FFFFFFFF`	`0x00000000FFFFFFFF`	=	`0x00006666660100E0`	`0x00006666660100E0`	=	`0x00000000FFFFFFFF`	`0x00000000FFFFFFFF`	=
114	`—`	`0x0000000000010002`	Δ	`0x00000000FFFFFFFF`	`0x00000000FFFFFF00`	Δ	`0x00006666660100E0`	`0x00006666660100E0`	=	`0xFFFFFFFFFFFFFF00`	`0xFFFFFFFFFFFFFFFF`	Δ
115	`—`	`0x0000000000010002`	Δ	`0x00000000FFFFFFFF`	`0x00000000FFFFFF01`	Δ	`0x00006666660100E0`	`0x00006666660100E0`	=	`0xFFFFFFFFFFFFFF01`	`0xFFFFFFFFFFFFFFFF`	Δ
116	`—`	`0x0000000000010002`	Δ	`0x00000000FFFFFFFF`	`0x00000000FFFFFF02`	Δ	`0x00006666660100E0`	`0x00006666660100E0`	=	`0xFFFFFFFFFFFFFF02`	`0xFFFFFFFFFFFFFFFF`	Δ
117	`—`	`0x0000000000010002`	Δ	`0x00000000FFFFFFFF`	`0x00000000FFFFFF80`	Δ	`0x00006666660100E0`	`0x00006666660100E0`	=	`0xFFFFFFFFFFFFFF80`	`0xFFFFFFFFFFFFFFFF`	Δ
118	`—`	`0x0000000000010002`	Δ	`0x00000000FFFFFFFF`	`0x00000000FFFFFFFE`	Δ	`0x00006666660100E0`	`0x00006666660100E0`	=	`0xFFFFFFFFFFFFFFFE`	`0xFFFFFFFFFFFFFFFF`	Δ
119	`—`	`0x0000000000010002`	Δ	`0x00000000FFFFFFFF`	`0x00000000FFFFFFFF`	=	`0x00006666660100E0`	`0x00006666660100E0`	=	`0xFFFFFFFFFFFFFFFF`	`0xFFFFFFFFFFFFFFFF`	=