diff --git a/autoverify/verifier/complete/abcrown/verifier.py b/autoverify/verifier/complete/abcrown/verifier.py
index 5040919..3680b75 100644
--- a/autoverify/verifier/complete/abcrown/verifier.py
+++ b/autoverify/verifier/complete/abcrown/verifier.py
@@ -48,7 +48,6 @@ def contexts(self) -> list[ContextManager[None]]:
         # Ideally just keep track of PIDs rather than pkill name matching
         return [
             cwd(self.tool_path / "complete_verifier"),
-            pkill_matches(["python abcrown.py"]),
         ]
 
     def _parse_result(
diff --git a/autoverify/verifier/complete/nnenum/verifier.py b/autoverify/verifier/complete/nnenum/verifier.py
index c31c2af..d87ff54 100644
--- a/autoverify/verifier/complete/nnenum/verifier.py
+++ b/autoverify/verifier/complete/nnenum/verifier.py
@@ -46,7 +46,6 @@ def contexts(self) -> list[ContextManager[None]]:
         return [
             cwd(self.tool_path / "src"),
             environment(OPENBLAS_NUM_THREADS="1", OMP_NUM_THREADS="1"),
-            pkill_matches(["python -m nnenum.nnenum"]),
         ]
 
     def _parse_result(
diff --git a/autoverify/verifier/complete/ovalbab/verifier.py b/autoverify/verifier/complete/ovalbab/verifier.py
index 624e47c..ff76d69 100644
--- a/autoverify/verifier/complete/ovalbab/verifier.py
+++ b/autoverify/verifier/complete/ovalbab/verifier.py
@@ -52,7 +52,6 @@ def contexts(self) -> list[ContextManager[None]]:
                     find_conda_lib(self.conda_env_name, "libcudart.so.11.0")
                 )
             ),
-            pkill_matches(["python tools/bab_tools/bab_from_vnnlib.py"]),
         ]
 
     def _parse_result(
diff --git a/autoverify/verifier/verifier.py b/autoverify/verifier/verifier.py
index b38dbe6..7a98b51 100644
--- a/autoverify/verifier/verifier.py
+++ b/autoverify/verifier/verifier.py
@@ -313,44 +313,24 @@ def _run_verification(
             for context in contexts:
                 stack.enter_context(context)
 
-            process = subprocess.Popen(
-                run_cmd,
-                executable="/bin/bash",
+            before_t = time.time()
+
+            process = subprocess.run(
+                run_cmd, 
+                executable="/bin/bash", 
                 stdout=subprocess.PIPE,
                 stderr=subprocess.STDOUT,
                 shell=True,
                 universal_newlines=True,
-                preexec_fn=os.setsid,
-            )
-
-            before_t = time.time()
-            self._timeout_event: threading.Event | None = threading.Event()
-
-            def _terminate(timeout_sec):
-                assert self._timeout_event
-                on_time = self._timeout_event.wait(timeout_sec)
-
-                if not on_time:
-                    global result
-                    result = "TIMEOUT"  # type: ignore
-
-                if pid_exists(process.pid):
-                    os.killpg(os.getpgid(process.pid), signal.SIGTERM)
-
-            t = threading.Thread(target=_terminate, args=[timeout])
-            t.start()
+                preexec_fn=os.setsid)
 
             assert process.stdout
 
-            for line in iter(process.stdout.readline, ""):
-                output_lines.append(line)
+            output_str = process.stdout
 
-            process.stdout.close()
-            return_code = process.wait()
+            return_code = process.returncode
             took_t = time.time() - before_t
-            self._timeout_event.set()
 
-            output_str = "".join(output_lines)
             counter_example: str | None = None
 
             if result != "TIMEOUT":
@@ -361,8 +341,6 @@ def _terminate(timeout_sec):
                         output_str, result_file
                     )
 
-            self._timeout_event = None
-
             return CompleteVerificationData(
                 result,  # type: ignore
                 took_t,