Create a tool-info module for BtorMC

When passing only `--version` to BtorMC,
the tool does not terminate,
an EOF (ctrl-D) has to be passed to stdin additionally.

benchexec/tools/btormc.py

@@ -0,0 +1,47 @@
+# This file is part of BenchExec, a framework for reliable benchmarking:
+# https://github.com/sosy-lab/benchexec
+#
+# SPDX-FileCopyrightText: 2007-2020 Dirk Beyer <https://www.sosy-lab.org>
+#
+# SPDX-License-Identifier: Apache-2.0
+
+import benchexec.result as result
+import benchexec.tools.template
+
+
+class Tool(benchexec.tools.template.BaseTool2):
+    """
+    Tool info for BtorMC -- A Bounded Model Checker for Btor2
+    """
+
+    REQUIRED_PATHS = ["build/"]
+
+    def executable(self, tool_locator):
+        return tool_locator.find_executable("btormc", subdir="build/bin")
+
+    def name(self):
+        return "BtorMC"
+
+    def project_url(self):
+        return "https://github.com/Boolector/boolector"
+
+    def version(self, executable):
+        return self._version_from_tool(executable, stdin="")
+
+    def cmdline(self, executable, options, task, rlimits):
+        return [executable] + options + [task.single_input_file]
+
+    def determine_result(self, run):
+        """
+        @return: status of BtorMC after executing a run
+        """
+        if run.was_timeout:
+            return result.RESULT_TIMEOUT
+        for line in run.output[::-1]:
+            # BtorMC's option `--trace-gen` must be set to 1
+            # such that "sat/unsat" is printed to the output
+            if line.startswith("unsat"):
+                return result.RESULT_TRUE_PROP
+            elif line.startswith("sat"):
+                return result.RESULT_FALSE_PROP
+        return result.RESULT_UNKNOWN

benchexec/tools/template.py

@@ -137,6 +137,7 @@ def version(self, executable):
     def _version_from_tool(
         executable,
         arg="--version",
+        stdin=None,
         use_stderr=False,
         ignore_stderr=False,
         line_prefix=None,
@@ -146,13 +147,15 @@ def _version_from_tool(
         and returning stdout.
         @param executable: the path to the executable of the tool (typically the result of executable())
         @param arg: an argument to pass to the tool to let it print its version
+        @param stdin: this argument is passed to the tool's stdin (default: None)
         @param use_stderr: True if the tool prints version on stderr, False for stdout
         @param line_prefix: if given, search line with this prefix and return only the rest of this line
         @return a (possibly empty) string of output of the tool
         """
         try:
             process = subprocess.run(
                 [executable, arg],
+                input=stdin,
                 stdout=subprocess.PIPE,
                 stderr=subprocess.PIPE,
                 universal_newlines=True,