set w = the State of SCM;
set t = the State of SCM +* (((dl. 0),(dl. 1)) --> (0,1));
A10: InsCode (SubFrom (a,b)) = 3
.= InsCode (SubFrom ((dl. 0),(dl. 1))) ;
A11: dom (((dl. 0),(dl. 1)) --> (0,1)) = {(dl. 0),(dl. 1)} by FUNCT_4:62;
then dl. 0 in dom (((dl. 0),(dl. 1)) --> (0,1)) by TARSKI:def 2;
then A12: ( 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 ;
A13: dl. 0 in Data-Locations by AMI_3:28;
dl. 1 in dom (((dl. 0),(dl. 1)) --> (0,1)) by A11, TARSKI:def 2;
then A14: ( the State of SCM +* (((dl. 0),(dl. 1)) --> (0,1))) . (dl. 1) = (((dl. 0),(dl. 1)) --> (0,1)) . (dl. 1) by FUNCT_4:13
.= 1 by FUNCT_4:63 ;
(Exec ((SubFrom ((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. 0)) - (( the State of SCM +* (((dl. 0),(dl. 1)) --> (0,1))) . (dl. 1)) by AMI_3:4
.= - 1 by A12, A14 ;
hence for b₁ being InsType of the InstructionsF of SCM st b₁ = InsCode (SubFrom (a,b)) holds
not b₁ is jump-only by A10, A12, A13; :: thesis: verum