Bug: Realizability analysis not working

[jendavis]

I found that realizability analysis was working in the October 10 version of the nightly fmw build but not in the November 18 version. I believe this is still an issue with the current build. I pasted the plaintext for a small model that exhibits this issue when running realizability analysis on top_level (a system) as well as the error message I received.

---

package Adder
public
with Base_Types;

system B
features
Output: out data port Base_Types::Integer;

annex agree {** 
	guarantee "B output range" : Output = 1;
**};	

end B ;

system C
features
Output: out data port Base_Types::Integer;

annex agree {** 
	guarantee "C output range" : Output = 4;
**};	

end C ;

system top_level
features
Output: out data port Base_Types::Integer;
annex agree {**
guarantee "System output is sum of component outputs" : Output = B_out + C_out;
guarantee "System output is 5" : Output = 5;
eq B_out : int;
eq C_out : int;
**};
end top_level;

system implementation top_level.Impl
subcomponents
B_sub : system B ;
C_sub : system C ;
annex agree {**
assign B_out = B_sub.Output;
assign C_out = C_sub.Output;
assign Output = B_out + C_out;
**};

end top_level.Impl;

end Adder;