Add benchmark tasks combined from seq-mthreaded/pals_lcr and eca-rers…

…2012/Problem12_label0*

Used in 'Dirk Beyer, Marie-Christine Jakobs, Thomas Lemberger: Difference Verification with Conditions, SEFM20'

c/ReachSafety-Combinations.set

@@ -0,0 +1 @@
+combinations/*.yml

c/combinations/Makefile

@@ -0,0 +1,23 @@
+# This file is part of the SV-Benchmarks collection of verification tasks:
+# https://github.com/sosy-lab/sv-benchmarks
+#
+# SPDX-FileCopyrightText: 2015-2016 Daniel Liew <[email protected]>
+# SPDX-FileCopyrightText: 2015-2020 The SV-Benchmarks Community
+#
+# SPDX-License-Identifier: Apache-2.0
+
+LEVEL := ../
+
+CLANG_WARNINGS := \
+	-Wno-sometimes-uninitialized \
+	-Wno-uninitialized \
+
+include $(LEVEL)/Makefile.config
+
+license-pals:
+	reuse addheader --template header.jinja2 --copyright "The SV-Benchmarks Community" --year 2014-2020 --license Apache-2.0 pals_lcr.*c
+	reuse addheader --template header.jinja2 --copyright "Carnegie Mellon University" --year 2013 --license "LicenseRef-BSD-3-Clause-Attribution-CMU" pals_lcr.*c
+	reuse addheader --template header.jinja2 --copyright "The RERS Challenge <https://www.rers-challenge.org>" --year 2012 pals_lcr.*c
+
+tasks:
+	./generate-tasks.py --benchmark-dir ../../ --output-dir ./

c/combinations/README.md

@@ -0,0 +1,43 @@
+<!--
+This file is part of the SV-Benchmarks collection of verification tasks:
+https://github.com/sosy-lab/sv-benchmarks
+
+SPDX-FileCopyrightText: 2020 The SV-Benchmarks Community
+
+SPDX-License-Identifier: Apache-2.0
+-->
+
+This directory contains programs combined from other
+benchmark tasks that are available in sv-benchmarks.
+
+The benchmarks were created for evaluation of the work
+"Dirk Beyer, Marie-Christine Jakobs, Thomas Lemberger: Difference Verification with Conditions, SEFM 2020."
+
+Tasks were contributed by Marie-Christine Jakobs and Thomas Lemberger.
+
+## Structure of benchmark tasks
+
+Each benchmark task in this directory is created from two other tasks
+of other categories, according to the following pattern:
+
+```
+/* definitions of Task 1 ... */
+int main1() { /* main-method of Task 1 ... */ }
+/* definitions of Task 2 ... */
+int main2() { /* main-method of Task 2 ... */ }
+
+int main() {
+  if (__VERIFIER_nondet_int()) {
+    main1();
+  } else {
+    main2();
+  }
+```
+
+Definitions are renamed to avoid conflicts, if necessary.
+
+This construction leads to programs with independent program parts.
+
+The name of each benchmark task reveals its origin:
+All task names are created by the pattern ${TASK_1}+${TASK_2}.
+

c/combinations/generate-tasks.py

@@ -0,0 +1,221 @@
+#!/usr/bin/env python3
+
+# This file is part of the replication artifact for
+# difference verification with conditions:
+# https://gitlab.com/sosy-lab/research/data/difference-data
+#
+# SPDX-FileCopyrightText: 2020 Dirk Beyer <https://sosy-lab.org>
+# SPDX-FileCopyrightText: 2020 The SV-Benchmarks Community
+#
+# SPDX-License-Identifier: Apache-2.0
+
+import argparse
+from pathlib import Path
+import yaml
+import sys
+
+
+class TaskError(Exception):
+    pass
+
+
+def get_tasks(benchmark_dir: Path, glob_pattern):
+    for file1 in benchmark_dir.glob(glob_pattern):
+        input_file = _get_input_file(file1)
+        try:
+            verdict = _get_verdict(file1)
+        except TaskError:
+            print(
+                "INFO: Ignoring %s because of missing verdict" % str(file1),
+                file=sys.stderr,
+            )
+            continue
+        else:
+            yield input_file, verdict
+
+
+def _get_input_file(yml_task_def):
+    with yml_task_def.open() as inp:
+        yml_content = yaml.safe_load(inp)
+    return yml_task_def.parent / Path(yml_content["input_files"])
+
+
+def _get_verdict(yml_task_def):
+    with yml_task_def.open() as inp:
+        yml_content = yaml.safe_load(inp)
+    try:
+        return next(
+            p["expected_verdict"]
+            for p in yml_content["properties"]
+            if p["property_file"].endswith("unreach-call.prp")
+        )
+    except StopIteration:
+        raise TaskError()
+
+
+def _create_combo(
+    file1: Path, file2: Path, replacement1=None, replacement2=None
+) -> str:
+    if replacement1:
+        repl1 = replacement1
+    else:
+        repl1 = lambda x: x
+    if replacement2:
+        repl2 = replacement2
+    else:
+        repl2 = lambda x: x
+    with file1.open() as inp:
+        content1 = "".join(
+            repl1(line.replace("main(", "main1(")) for line in inp.readlines()
+        )
+    with file2.open() as inp:
+        content2 = "".join(
+            repl2(line.replace("main(", "main2("))
+            for line in inp.readlines()
+            if not line.startswith("extern ")
+            and not line.startswith("void reach_error")
+        )
+
+    additional_defs = """extern unsigned int __VERIFIER_nondet_uint();
+extern char __VERIFIER_nondet_char();
+extern int __VERIFIER_nondet_int();
+extern long __VERIFIER_nondet_long();
+extern unsigned long __VERIFIER_nondet_ulong();
+extern float __VERIFIER_nondet_float();
+extern void exit(int);
+"""
+
+    return (
+        additional_defs
+        + content1
+        + content2
+        + """int main()
+{
+  if(__VERIFIER_nondet_int())
+    main1();
+  else
+    main2();
+}"""
+    )
+
+
+def _get_yml_content(verdict1, verdict2, input_file: str, data_model="ILP32"):
+    verdict = verdict1 == verdict2 == True
+    return f"""format_version: '2.0'
+
+input_files: '{input_file}'
+
+properties:
+  - property_file: ../properties/unreach-call.prp
+    expected_verdict: {verdict}
+
+options:
+  language: C
+  data_model: {data_model}
+"""
+
+
+def create_combos(
+    pattern1, pattern2, replacement1=None, replacement2=None, output_dir=None
+):
+    tasks1 = list(get_tasks(args.benchmark_dir, pattern1))
+    tasks2 = list(get_tasks(args.benchmark_dir, pattern2))
+
+    output_dir.mkdir(parents=True, exist_ok=True)
+
+    for file1, verdict1 in tasks1:
+        for file2, verdict2 in tasks2:
+            assert isinstance(verdict1, bool)
+            assert isinstance(verdict2, bool)
+            if verdict1 == verdict2 == False:
+                continue
+            basename = file1.name[:-2] + "+" + file2.name
+            c_file = output_dir / Path(basename)
+            c_content = _create_combo(file1, file2, replacement1, replacement2)
+            yml_content = _get_yml_content(verdict1, verdict2, c_file.name)
+            yml_file = output_dir / Path(basename[:-2] + ".yml")
+
+            with c_file.open("w") as outp:
+                outp.write(c_content)
+            with yml_file.open("w") as outp:
+                outp.write(yml_content)
+
+
+def _systemc_replacements1(line) -> str:
+    return (
+        line.replace("error(", "error1(")
+        .replace("init_threads(", "init_threads1(")
+        .replace("exists_runnable_thread(", "exists_runnable_thread1(")
+        .replace("eval(", "eval1(")
+        .replace("init_model(", "init_model1(")
+        .replace("stop_simulation(", "stop_simulation1(")
+        .replace("start_simulation(", "start_simulation1(")
+        .replace("reach_error1(", "reach_error(")
+        .replace("update_channels(", "update_channels1(")
+        .replace("fire_delta_events(", "fire_delta_events1(")
+        .replace("reset_delta_events(", "reset_delta_events1(")
+        .replace("activate_threads(", "activate_threads1(")
+        .replace("fire_time_events(", "fire_time_events1(")
+        .replace("reset_time_events(", "reset_time_events1(")
+    )
+
+
+def _systemc_replacements2(line) -> str:
+    return (
+        line.replace("error(", "error2(")
+        .replace("init_threads(", "init_threads2(")
+        .replace("exists_runnable_thread(", "exists_runnable_thread2(")
+        .replace("eval(", "eval2(")
+        .replace("init_model(", "init_model2(")
+        .replace("stop_simulation(", "stop_simulation2(")
+        .replace("start_simulation(", "start_simulation2(")
+        .replace("reach_error2(", "reach_error(")
+        .replace("update_channels(", "update_channels2(")
+        .replace("fire_delta_events(", "fire_delta_events2(")
+        .replace("reset_delta_events(", "reset_delta_events2(")
+        .replace("activate_threads(", "activate_threads2(")
+        .replace("fire_time_events(", "fire_time_events2(")
+        .replace("reset_time_events(", "reset_time_events2(")
+    )
+
+
+if __name__ == "__main__":
+    parser = argparse.ArgumentParser()
+    parser.add_argument(
+        "--benchmark-dir", required=True, help="sv-benchmarks directory"
+    )
+    parser.add_argument(
+        "--output-dir", required=True, help="output directory for created files"
+    )
+
+    args = parser.parse_args()
+    args.benchmark_dir = Path(args.benchmark_dir)
+    args.output_dir = Path(args.output_dir)
+
+    create_combos(
+        "c/eca-rers2012/Problem05_label4*.yml",
+        "c/systemc/token_ring*.yml",
+        output_dir=args.output_dir,
+    )
+    create_combos(
+        "c/bitvector/gcd_*.yml",
+        "c/floats-cdfpl/newton_*.yml",
+        output_dir=args.output_dir,
+    )
+    create_combos(
+        "c/seq-mthreaded/pals_lcr.*.yml",
+        "c/eca-rers2012/Problem12_label0*.yml",
+        output_dir=args.output_dir,
+    )
+    create_combos(
+        "c/floats-cdfpl/square*.yml",
+        "c/bitvector/soft_float_*.yml",
+        output_dir=args.output_dir,
+    )
+    create_combos(
+        "c/systemc/pc_sfifo*.yml",
+        "c/systemc/token_ring*.yml",
+        replacement1=_systemc_replacements1,
+        replacement2=_systemc_replacements2,
+        output_dir=args.output_dir,
+    )