set w = the State of SCM;
set t = the State of SCM +* (((dl. 0),(dl. 1)) --> (0,1));
A1: InsCode (a := b) = 1
.= InsCode ((dl. 0) := (dl. 1)) ;
A2: dl. 0 in Data-Locations by AMI_3:28;
A3: dom (((dl. 0),(dl. 1)) --> (0,1)) = {(dl. 0),(dl. 1)} by FUNCT_4:62;
then A4: dl. 1 in dom (((dl. 0),(dl. 1)) --> (0,1)) by TARSKI:def 2;
dl. 0 in dom (((dl. 0),(dl. 1)) --> (0,1)) by A3, TARSKI:def 2;
then A5: ( the State of SCM +* (((dl. 0),(dl. 1)) --> (0,1))) . (dl. 0) = (((dl. 0),(dl. 1)) --> (0,1)) . (dl. 0) by FUNCT_4:13
.= 0 by AMI_3:10, FUNCT_4:63 ;
(Exec (((dl. 0) := (dl. 1)),( the State of SCM +* (((dl. 0),(dl. 1)) --> (0,1))))) . (dl. 0) = ( the State of SCM +* (((dl. 0),(dl. 1)) --> (0,1))) . (dl. 1) by AMI_3:2
.= (((dl. 0),(dl. 1)) --> (0,1)) . (dl. 1) by A4, FUNCT_4:13
.= 1 by FUNCT_4:63 ;
hence for b₁ being InsType of the InstructionsF of SCM st b₁ = InsCode (a := b) holds
not b₁ is jump-only by A1, A2, A5; :: thesis: verum