- stop reporting z3.2-19 warnings as errors

- change the syntax converter of z3 for bitvectors
  (z3 get confused if there is a variable "bv1" and then a declaration
  (_ bv1 32))

drivers/smt-libv2.drv

@@ -6,7 +6,7 @@ printer "smtv2"
 filename "%f-%t-%g.smt2"
 unknown "^\\(unknown\\|sat\\|Fail\\)" ""
 outofmemory "^(error \".*out of memory\")\\|Cannot allocate memory"
-fail "^(error \"\\(.*\\)\")" "Error: \1"
+fail "^(error \"\\(W\\(A\\(R\\(N\\(I\\(N[^G]\\|[^N]\\)\\|[^I]\\)\\|[^N]\\)\\|[^R]\\)\\|[^A]\\)\\|[^W]\\)\\(.*\\)\")" "Error: \1"
 timeout "interrupted by timeout"
 time "why3cpulimit time : %s s"
 valid "^unsat"

drivers/z3_bare.drv

@@ -56,7 +56,7 @@ theory bitvec.BitVector64
   syntax function lsr "(bvlshr %1 %2)"
   syntax function lsl "(bvshl %1 %2)"
   syntax function asr "(bvashr %1 %2)"
-  syntax converter of_int "(_ bv%1 64)"
+  syntax converter of_int "((_ int2bv 64) %1)"
   syntax function to_int "(bv2int %1)"
   remove prop to_int_of_int
   remove prop to_int_extensionality
@@ -121,7 +121,7 @@ theory bitvec.BitVector32
   syntax function lsr "(bvlshr %1 %2)"
   syntax function lsl "(bvshl %1 %2)"
   syntax function asr "(bvashr %1 %2)"
-  syntax converter of_int "(_ bv%1 32)"
+  syntax converter of_int "((_ int2bv 32) %1)"
   syntax function to_int "(bv2int %1)"
   remove prop to_int_of_int
   remove prop to_int_extensionality
@@ -186,7 +186,7 @@ theory bitvec.BitVector16
   syntax function lsr "(bvlshr %1 %2)"
   syntax function lsl "(bvshl %1 %2)"
   syntax function asr "(bvashr %1 %2)"
-  syntax converter of_int "(_ bv%1 16)"
+  syntax converter of_int "((_ int2bv 16) %1)"
   syntax function to_int "(bv2int %1)"
   remove prop to_int_of_int
   remove prop to_int_extensionality
@@ -251,7 +251,7 @@ theory bitvec.BitVector8
   syntax function lsr "(bvlshr %1 %2)"
   syntax function lsl "(bvshl %1 %2)"
   syntax function asr "(bvashr %1 %2)"
-  syntax converter of_int "(_ bv%1 8)"
+  syntax converter of_int "((_ int2bv 8) %1)"
   syntax function to_int "(bv2int %1)"
   remove prop to_int_of_int
   remove prop to_int_extensionality