anchor.diff:   INTEGER :: istart = 1
    INTEGER :: iend = 10
   
  +
  +
    DO i = istart , iend , 1
     PRINT * ,"value1: " , value1 ( i )
     PRINT * ,"value2: " , value2 ( i )
  
positive.code:  INTEGER :: istart = 1
   INTEGER :: iend = 10
  
   PRINT * ,"value1: " , value1
   PRINT * ,"value2: " , value2
  END SUBROUTINE clawloop_extracted0
  
negative.code:  INTEGER :: i
   INTEGER :: istart = 1
   INTEGER :: iend = 10
  
  
   DO j = 1 , 10 , 1
    value1 ( j ) = j
  