[Wp] improve bitwise simplifier: oracle upfdate

src/plugins/wp/tests/wp_acsl/oracle_qualif/bitwise.res.oracle

@@ -2,7 +2,7 @@
 [kernel] Parsing bitwise.i (no preprocessing)
 [wp] Running WP plugin...
 [wp] Warning: Missing RTE guards
-[wp] 49 goals scheduled
+[wp] 51 goals scheduled
 [wp] [Qed] Goal typed_band_ensures : Valid
 [wp] [Qed] Goal typed_band_ensures_band0 : Valid
 [wp] [Qed] Goal typed_band_bit0_ensures_band1 : Valid
@@ -52,8 +52,10 @@
 [wp] [Qed] Goal typed_cast_uchar_check_bit_to_signed_positive2_ok : Valid
 [wp] [Qed] Goal typed_cast_uchar_check_bit_to_signed_negative_ok : Valid
 [wp] [Qed] Goal typed_cast_uchar_check_bit_to_signed_negative2_ok : Valid
-[wp] Proved goals:   49 / 49
-  Qed:            46 
+[wp] [Qed] Goal typed_cast_uchar_check_bit_to_signed_ok : Valid
+[wp] [Qed] Goal typed_cast_uchar_check_bit_to_signed2_ok : Valid
+[wp] Proved goals:   51 / 51
+  Qed:            48 
   Alt-Ergo:        3
 ------------------------------------------------------------
  Functions                 WP     Alt-Ergo  Total   Success
@@ -67,5 +69,5 @@
   band_bool                 1        1        2       100%
   bxor_bool                 1        1        2       100%
   lemma                     7        -        7       100%
-  cast_uchar               12        -       12       100%
+  cast_uchar               14        -       14       100%
 ------------------------------------------------------------