diff --git a/Ubuntu-16.04.dockerfile b/Ubuntu-16.04.dockerfile
index 95f3056..f0a5ade 100644
--- a/Ubuntu-16.04.dockerfile
+++ b/Ubuntu-16.04.dockerfile
@@ -1,7 +1,11 @@
 FROM ubuntu:16.04
-RUN apt-get update && apt-get install -y apt-transport-https curl gnupg lsb-release pkg-config libsqlite3-dev libicu-dev gcc g++ meson
+RUN apt-get update && apt-get install -y apt-transport-https curl gnupg lsb-release pkg-config sqlite3 libsqlite3-dev libicu-dev gcc g++ meson
 COPY ci/arrow-ubuntu16.04.list /etc/apt/sources.list.d/apache-arrow.list
 RUN curl https://dist.apache.org/repos/dist/dev/arrow/KEYS | apt-key add - && apt-get update && apt-get install -y libparquet-dev
 WORKDIR /src
 COPY . /src
-RUN mkdir builddir && meson builddir && cd builddir && ninja
+RUN mkdir builddir && meson builddir
+WORKDIR builddir
+RUN meson configure -Db_pgo=generate && ninja
+RUN ninja test
+RUN meson configure -Db_pgo=use && ninja
diff --git a/Ubuntu-18.04.dockerfile b/Ubuntu-18.04.dockerfile
index b5fbc2a..bbfc2de 100644
--- a/Ubuntu-18.04.dockerfile
+++ b/Ubuntu-18.04.dockerfile
@@ -1,7 +1,11 @@
 FROM ubuntu:18.04
-RUN apt-get update && apt-get install -y apt-transport-https curl gnupg lsb-release pkg-config libsqlite3-dev libicu-dev gcc g++ meson
+RUN apt-get update && apt-get install -y apt-transport-https curl gnupg lsb-release pkg-config sqlite3 libsqlite3-dev libicu-dev gcc g++ meson
 COPY ci/arrow-ubuntu18.04.list /etc/apt/sources.list.d/apache-arrow.list
 RUN curl -L -o /usr/share/keyrings/apache-arrow-keyring.gpg https://dl.bintray.com/apache/arrow/$(lsb_release --id --short | tr 'A-Z' 'a-z')/apache-arrow-keyring.gpg && apt-get update && apt-get install -y libparquet-dev
 WORKDIR /src
 COPY . /src
-RUN mkdir builddir && meson builddir && cd builddir && ninja
+RUN mkdir builddir && meson builddir
+WORKDIR builddir
+RUN meson configure -Db_pgo=generate && ninja
+RUN ninja test
+RUN meson configure -Db_pgo=use && ninja
diff --git a/parquet-generator/codecs/brotli.parquet b/tests/datasets/codecs/brotli.parquet
similarity index 100%
rename from parquet-generator/codecs/brotli.parquet
rename to tests/datasets/codecs/brotli.parquet
diff --git a/parquet-generator/codecs/gzip.parquet b/tests/datasets/codecs/gzip.parquet
similarity index 100%
rename from parquet-generator/codecs/gzip.parquet
rename to tests/datasets/codecs/gzip.parquet
diff --git a/parquet-generator/codecs/snappy.parquet b/tests/datasets/codecs/snappy.parquet
similarity index 100%
rename from parquet-generator/codecs/snappy.parquet
rename to tests/datasets/codecs/snappy.parquet
diff --git a/tests/segfault-safety/load-valid-file/results.codecs.txt b/tests/segfault-safety/load-valid-file/results.codecs.txt
new file mode 100644
index 0000000..673d2b3
--- /dev/null
+++ b/tests/segfault-safety/load-valid-file/results.codecs.txt
@@ -0,0 +1 @@
+2016|5933845|3|105 Mile Post 2|||09999|IRI|5933845|01. Agriculture, agriculture operations and related sciences|1761||x|x|x
diff --git a/tests/segfault-safety/load-valid-file/results.txt b/tests/segfault-safety/load-valid-file/results.no-nulls.txt
similarity index 100%
rename from tests/segfault-safety/load-valid-file/results.txt
rename to tests/segfault-safety/load-valid-file/results.no-nulls.txt
diff --git a/tests/segfault-safety/load-valid-file/results.nulls.txt b/tests/segfault-safety/load-valid-file/results.nulls.txt
new file mode 100644
index 0000000..4248e51
--- /dev/null
+++ b/tests/segfault-safety/load-valid-file/results.nulls.txt
@@ -0,0 +1 @@
+1|50|5000|50000000|50000000000|490665600000|99.0|0|000|||1.0