consider e being Element of S such that
A1: e <> 0. S by STRUCT_0:def 19;
reconsider e = e as Element of S ;
consider w being State of (SCM S);
set t = w +* ((dl. S,0 ),(dl. S,1) --> (0. S),e);
A2: InsCode (p := q) = 1 by MCART_1:def 1
.= InsCode ((dl. S,0 ) := (dl. S,1)) by MCART_1:def 1 ;
IC (SCM S) = IC SCM by AMI_3:4, SCMRING2:9;
then A3: dl. S,0 <> IC (SCM S) by AMI_3:57;
dom ((dl. S,0 ),(dl. S,1) --> (0. S),e) = {(dl. S,0 ),(dl. S,1)} by FUNCT_4:65;
then A4: ( dl. S,0 in dom ((dl. S,0 ),(dl. S,1) --> (0. S),e) & dl. S,1 in dom ((dl. S,0 ),(dl. S,1) --> (0. S),e) ) by TARSKI:def 2;
A5: dl. S,0 <> dl. S,1 by AMI_3:52;
A6: (w +* ((dl. S,0 ),(dl. S,1) --> (0. S),e)) . (dl. S,0 ) = ((dl. S,0 ),(dl. S,1) --> (0. S),e) . (dl. S,0 ) by A4, FUNCT_4:14
.= 0. S by A5, FUNCT_4:66 ;
(Exec ((dl. S,0 ) := (dl. S,1)),(w +* ((dl. S,0 ),(dl. S,1) --> (0. S),e))) . (dl. S,0 ) = (w +* ((dl. S,0 ),(dl. S,1) --> (0. S),e)) . (dl. S,1) by SCMRING2:13
.= ((dl. S,0 ),(dl. S,1) --> (0. S),e) . (dl. S,1) by A4, FUNCT_4:14
.= e by FUNCT_4:66 ;
hence for b₁ being InsType of (SCM S) st b₁ = InsCode (p := q) holds
not b₁ is jump-only by A1, A2, A3, A6, AMISTD_1:def 3; :: thesis: verum