module Verifier:sig..end
verify the answer of sygus string
val verify : Ast.symbol * Ast.sorted_var list * Ast.sort * Ast.term ->
Ast.cmd list -> IntermediateTypes.verifyResultverify the given sygus ast and the presumed answer body of synth-fun
(fname,args,sort,term) : term : the body of functionsort : return sort of functionargs : parameters of functionfname : function namecmds : A sygus ast