Check whether the given sequence of formulas contains unsatisfiable elements (in this case, a singleton sequence containing only this element is returned), and otherwise remove all tautologies from it.
      
    
      
      
    
      
      
    
      
      
    
      
      
    
      
      
    
      
      
    
      
      
    
      
      
    
      
      
    
      
      
    
      
      
    
      (Since version ) see corresponding Javadoc for more information.