- Using the scyther.py -e command, I found and fixed some errors.

spdl/nsl7.spdl

@@ -12,8 +12,8 @@ protocol nsl7(I,R)
 		read_1(I,R, {I,ni}pk(R) );
 		send_2(R,I, {ni,nr,R}pk(I) );
 		read_3(I,R, {nr}pk(R) );
-		claim_4(I,Secret,ni);
-		claim_5(I,Secret,nr);
+		claim_4(R,Secret,ni);
+		claim_5(R,Secret,nr);
 	}
 }