add eval/run_minif2f.py

eval/run_minif2f.py

@@ -0,0 +1,75 @@
+#!/usr/bin/env python3
+import json
+import os
+import re
+import subprocess
+import tempfile
+from pathlib import Path
+
+import requests
+from tqdm import tqdm
+
+
+ROOT = Path(__file__).resolve().parent.parent
+LEAN_DIR = ROOT / "lean4"
+SERVER = os.getenv("LEAN_LLM_SERVER", "http://localhost:8000/v1/completions")
+
+
+def lean_statements() -> list[str]:
+    content = (LEAN_DIR / "MiniF2F.lean").read_text(encoding="utf-8")
+    matches = re.findall(r"theorem\s+.*?:=\s+by\s+sorry", content, flags=re.DOTALL)
+    return [m.strip() for m in matches]
+
+
+def call_llm(stmt: str) -> list[dict]:
+    response = requests.post(
+        SERVER,
+        json={"prompt": stmt, "temperature": 0.0, "stop": ["<|user|>"]},
+        timeout=120,
+    )
+    response.raise_for_status()
+    text = response.json()["choices"][0]["text"].strip()
+    return json.loads(text) if text else []
+
+
+def verify_with_lean(steps: list[dict]) -> bool:
+    with tempfile.NamedTemporaryFile(mode="w", suffix=".lean", dir=LEAN_DIR, delete=False, encoding="utf-8") as f:
+        f.write("import MiniF2F\n\n")
+        f.write("namespace Scratch\n\n")
+        for s in steps:
+            name = s.get("name", "h_main")
+            statement = s.get("statement", "True")
+            tactic = s.get("tactic", "sorry")
+            f.write(f"theorem {name} : {statement} := by\n  {tactic}\n\n")
+        f.write("end Scratch\n")
+        tmp = Path(f.name)
+    try:
+        result = subprocess.run(
+            ["lake", "env", "lean", str(tmp.name)],
+            cwd=LEAN_DIR,
+            capture_output=True,
+            text=True,
+            timeout=60,
+        )
+        return result.returncode == 0
+    finally:
+        if tmp.exists():
+            tmp.unlink()
+
+
+def main() -> None:
+    stmts = lean_statements()
+    print(f"testing {len(stmts)} theorems")
+    passed = 0
+    for stmt in tqdm(stmts):
+        try:
+            steps = call_llm(stmt)
+            if verify_with_lean(steps):
+                passed += 1
+        except Exception as exc:
+            print(f"error: {exc}")
+    print(f"passed: {passed}/{len(stmts)}")
+
+
+if __name__ == "__main__":
+    main()