`initializes` causes severe Z3 error

[pedroclobo]

The following reduced test causes Alive to crash:

declare void @llvm.memset.p0.i64(ptr writeonly captures(none), i8, i64, i1 immarg)

define void @src(ptr initializes((0, 24), (40, 48), (56, 64)) %pReadr) {
entry:
  %0 = load ptr, ptr null, align 8
  call void @llvm.memset.p0.i64(ptr align 8 null, i8 0, i64 80, i1 false)
  ret void
}

define void @tgt(ptr initializes((0, 24), (40, 48), (56, 64)) %pReadr) {
entry:
  call void @llvm.memset.p0.i64(ptr align 8 null, i8 0, i64 80, i1 false)
  ret void
}

Severe Z3 error: Argument #x08 at position 1 has sort (_ BitVec 8) it does not match declaration (declare-fun bvudiv ((_ BitVec 5) (_ BitVec 5)) (_ BitVec 5)) [code=12]

Removing the initializes prevents the crash.

Found while running alivecc on sqlite3 amalgamation.

./alivecc -c -O2 ./sqlite3.c -mllvm -tv-quiet -mllvm -tv-disable-undef-input -mllvm -tv-func=vdbePmaReaderClear