4. The system of claim 1 , wherein the comparison model is source code; and wherein the second operand is a variable.
4. The system of claim 1 , wherein the comparison model is source code; and wherein the second operand is a variable. 6. The system of claim 4 , wherein the processing unit is further configured to normalize the second expression of the comparison model by removing unnecessary indications of operator precedence from the second expression based on associativity; wherein the unnecessary indication of operator precedence may impact the associative property of operators; and wherein the unnecessary indications of operator precedence are parenthesis.