Paolo/2026 02 19 saad debugging

.gitignore

@@ -4,3 +4,7 @@ _CoqProject
 .env
 .DS_Store
 **/.DS_Store
+*.specs
+.lia.cache
+.nia.cache
+.nra.cache

test/psi/backend/ai/data_gen/output/step2_cpp_two_loopinvgo_rerun_promptupd_persona_v2/cryptography_developer/IntegerDivide/IntegerDivide__mode-novel__ex-01__block-0.cpp

@@ -0,0 +1,34 @@
+/* Precondition:
+ * - 0 <= n <= INT_MAX.
+ * - 0 <= key <= 255.
+ * - If n > 0, buf is non-null and points to the first element of a contiguous array of at least n valid unsigned char objects, properly aligned for unsigned char, and the storage remains alive for the entire call.
+ * - The function reads from buf[0, n).
+ * - The function writes to buf[0, n).
+ * - The caller holds exclusive read-write ownership of buf[0, n) for the duration of the call.
+ * - Let `buf_values_at_entry` denote the sequence of unsigned char values stored in buf[0, n) at function entry.
+ */
+unsigned char xor_mask_and_checksum(unsigned char* buf, int n, unsigned char key) {
+    unsigned int sum = 0;
+
+    /* Invariant:
+     * - At loop head: 0 <= i <= n.
+     * - There exist `pref` and `suf` such that `buf_values_at_entry = pref ++ suf` and `length(pref) = i`.
+     * - The current contents of `buf` over `[0, i)` equal the sequence obtained by XOR-ing each element of `pref` with `key`.
+     * - The current contents of `buf` over `[i, n)` equal `suf`.
+     * - `sum` equals the sum mod 256 of the elements of the sequence obtained by XOR-ing each element of `pref` with `key`.
+     */
+    for (int i = 0; i < n; ++i) {
+        unsigned char masked = static_cast<unsigned char>(buf[i] ^ key);
+        buf[i] = masked;
+        sum = (sum + static_cast<unsigned int>(masked)) & 255u;
+    }
+
+    /* Postcondition:
+     * - Let `buf_values_at_exit` denote the sequence in buf[0, n) on normal return.
+     * - The return value equals the sum mod 256 of the elements of `buf_values_at_exit`.
+     * - Output segment `[0, n)`: `buf_values_at_exit` equals the sequence obtained by XOR-ing each element of `buf_values_at_entry` with `key`.
+     * - All memory not described above is unchanged.
+     * - No exception can propagate out of this function.
+     */
+    return static_cast<unsigned char>(sum);
+}

test/psi/backend/ai/data_gen/output/step2_cpp_two_loopinvgo_rerun_promptupd_persona_v2/robotics_engineer/ArrayCopy_While/ArrayCopy_While__mode-novel__ex-01__block-0.cpp

@@ -0,0 +1,43 @@
+/* Precondition:
+ * - 0 <= n <= INT_MAX.
+ * - INT_MIN <= min_cmd <= INT_MAX.
+ * - INT_MIN <= max_cmd <= INT_MAX.
+ * - min_cmd <= max_cmd.
+ * - If n > 0, cmd is non-null and points to the first element of a contiguous array of at least n valid int objects, properly aligned for int, and the storage remains alive for the entire call.
+ * - The function reads from cmd[0, n).
+ * - The function writes to cmd[0, n).
+ * - The caller holds exclusive read-write ownership of cmd[0, n) for the duration of the call.
+ * - Let cmd_values_at_entry denote the sequence of int values stored in cmd[0, n) at function entry.
+ */
+int saturate_actuator_commands(int cmd[], int n, int min_cmd, int max_cmd) {
+    int saturated = 0;
+    int i = 0;
+
+    /* Invariant:
+     * - At loop head: 0 <= i <= n.
+     * - There exist pref and suf such that cmd_values_at_entry = pref ++ suf and length(pref) = i.
+     * - The current contents of cmd over [0, i) equal pref with each element replaced by min_cmd if below min_cmd, by max_cmd if above max_cmd, otherwise unchanged.
+     * - The current contents of cmd over [i, n) equal suf.
+     * - 0 <= saturated <= i.
+     * - saturated equals the number of elements of pref that are < min_cmd or > max_cmd.
+     */
+    for (; i < n; ++i) {
+        const int v = cmd[i];
+        if (v < min_cmd) {
+            cmd[i] = min_cmd;
+            saturated++;
+        } else if (v > max_cmd) {
+            cmd[i] = max_cmd;
+            saturated++;
+        }
+    }
+
+    /* Postcondition:
+     * - Let cmd_values_at_exit denote the sequence in cmd[0, n) on normal return.
+     * - The return value equals the number of elements of cmd_values_at_entry that are < min_cmd or > max_cmd.
+     * - Output segment [0, n): cmd_values_at_exit equals cmd_values_at_entry with each element replaced by min_cmd if below min_cmd, by max_cmd if above max_cmd, otherwise unchanged.
+     * - All memory not described above is unchanged.
+     * - No exception can propagate out of this function.
+     */
+    return saturated;
+}

test/psi/backend/ai/data_gen/output/step3_scaffold_two_loopinvgo_rerun_promptupd_persona_v2_step3retry4/step2_cpp_two_loopinvgo_rerun_promptupd_persona_v2__shared__dede18dc/br-project.toml

@@ -0,0 +1,3 @@
+name = "step2_cpp_two_loopinvgo_rerun_promptupd_persona_v2__shared__dede18dc"
+rocq_name = "step2_cpp_two_loopinvgo_rerun_promptupd_persona_v2__shared__dede18dc"
+proof_dir = "proof"

test/psi/backend/ai/data_gen/output/step3_scaffold_two_loopinvgo_rerun_promptupd_persona_v2_step3retry4/step2_cpp_two_loopinvgo_rerun_promptupd_persona_v2__shared__dede18dc/compile_commands.json

@@ -0,0 +1,20 @@
+[
+  {
+    "arguments": [
+      "/usr/local/bin/clang",
+      "-c",
+      "src/ArrayCopy_While/ArrayCopy_While__mode_novel__ex_01__block_0__c748fa5e.cpp"
+    ],
+    "directory": "/home/saad/dev/workspace/psi/backend/ai/data_gen/output/step3_scaffold_two_loopinvgo_rerun_promptupd_persona_v2_step3retry4/step2_cpp_two_loopinvgo_rerun_promptupd_persona_v2__shared__dede18dc",
+    "file": "/home/saad/dev/workspace/psi/backend/ai/data_gen/output/step3_scaffold_two_loopinvgo_rerun_promptupd_persona_v2_step3retry4/step2_cpp_two_loopinvgo_rerun_promptupd_persona_v2__shared__dede18dc/src/ArrayCopy_While/ArrayCopy_While__mode_novel__ex_01__block_0__c748fa5e.cpp"
+  },
+  {
+    "arguments": [
+      "/usr/local/bin/clang",
+      "-c",
+      "src/IntegerDivide/IntegerDivide__mode_novel__ex_01__block_0__29d09bb7.cpp"
+    ],
+    "directory": "/home/saad/dev/workspace/psi/backend/ai/data_gen/output/step3_scaffold_two_loopinvgo_rerun_promptupd_persona_v2_step3retry4/step2_cpp_two_loopinvgo_rerun_promptupd_persona_v2__shared__dede18dc",
+    "file": "/home/saad/dev/workspace/psi/backend/ai/data_gen/output/step3_scaffold_two_loopinvgo_rerun_promptupd_persona_v2_step3retry4/step2_cpp_two_loopinvgo_rerun_promptupd_persona_v2__shared__dede18dc/src/IntegerDivide/IntegerDivide__mode_novel__ex_01__block_0__29d09bb7.cpp"
+  }
+]

test/psi/backend/ai/data_gen/output/step3_scaffold_two_loopinvgo_rerun_promptupd_persona_v2_step3retry4/step2_cpp_two_loopinvgo_rerun_promptupd_persona_v2__shared__dede18dc/dune

@@ -0,0 +1,27 @@
+(env
+ (_
+  (flags :standard -warn-error +A -w +A-4-29-40..45-48-58..59-63..65-68-70)
+  (ocamlopt_flags :standard -O3 -unbox-closures)
+  (rocq
+   (rocqdep_flags :standard -w +all)
+   (flags (:standard -w
+    -notation-incompatible-prefix
+    -w
+    -notation-overridden
+    -w
+    -custom-entry-overridden
+    -w
+    -redundant-canonical-projection
+    -w
+    -ambiguous-paths
+    -w
+    +automatic-prop-lowering
+    -w
+    +deprecated-hint-without-locality
+    -w
+    +deprecated-instance-without-locality
+    -w
+    +unknown-option
+    -w
+    +future-coercion-class-field
+    )))))

test/psi/backend/ai/data_gen/output/step3_scaffold_two_loopinvgo_rerun_promptupd_persona_v2_step3retry4/step2_cpp_two_loopinvgo_rerun_promptupd_persona_v2__shared__dede18dc/dune-project

@@ -0,0 +1,15 @@
+(lang dune 3.21)
+(using rocq 0.11)
+(name step2_cpp_two_loopinvgo_rerun_promptupd_persona_v2__shared__dede18dc)
+
+(generate_opam_files)
+
+(package
+ (name step2_cpp_two_loopinvgo_rerun_promptupd_persona_v2__shared__dede18dc)
+ (synopsis "step2_cpp_two_loopinvgo_rerun_promptupd_persona_v2__shared__dede18dc")
+ (depends
+  (rocq-skylabs-cpp2v (= dev))
+  elpi-cpp
+  rocq-skylabs-auto-core
+  rocq-skylabs-auto-cpp
+  rocq-skylabs-cpp-stdlib))

test/psi/backend/ai/data_gen/output/step3_scaffold_two_loopinvgo_rerun_promptupd_persona_v2_step3retry4/step2_cpp_two_loopinvgo_rerun_promptupd_persona_v2__shared__dede18dc/dune-workspace

@@ -0,0 +1 @@
+(lang dune 3.8)

test/psi/backend/ai/data_gen/output/step3_scaffold_two_loopinvgo_rerun_promptupd_persona_v2_step3retry4/step2_cpp_two_loopinvgo_rerun_promptupd_persona_v2__shared__dede18dc/proof/ArrayCopy_While/ArrayCopy_While__mode_novel__ex_01__block_0__c748fa5e_cpp/pred.v

@@ -0,0 +1,9 @@
+Require Import step2_cpp_two_loopinvgo_rerun_promptupd_persona_v2__shared__dede18dc.proof.prelude.spec.
+
+
+Require step2_cpp_two_loopinvgo_rerun_promptupd_persona_v2__shared__dede18dc.src.ArrayCopy_While.ArrayCopy_While__mode_novel__ex_01__block_0__c748fa5e_cpp.
+#[local] Notation source := step2_cpp_two_loopinvgo_rerun_promptupd_persona_v2__shared__dede18dc.src.ArrayCopy_While.ArrayCopy_While__mode_novel__ex_01__block_0__c748fa5e_cpp.module.
+
+(*@BEGIN:"saturate_actuator_commands(int *, int, int, int)"@*)(*@END@*)
+
+(*@BEGIN:"insert"@*)(*@END@*)

test/psi/backend/ai/data_gen/output/step3_scaffold_two_loopinvgo_rerun_promptupd_persona_v2_step3retry4/step2_cpp_two_loopinvgo_rerun_promptupd_persona_v2__shared__dede18dc/proof/ArrayCopy_While/ArrayCopy_While__mode_novel__ex_01__block_0__c748fa5e_cpp/proof.v

@@ -0,0 +1,3 @@
+(*@BEGIN:"exports"@*)
+Require Export step2_cpp_two_loopinvgo_rerun_promptupd_persona_v2__shared__dede18dc.proof.ArrayCopy_While.ArrayCopy_While__mode_novel__ex_01__block_0__c748fa5e_cpp.proof.saturate_actuator_commands.
+(*@END@*)

test/psi/backend/ai/data_gen/output/step3_scaffold_two_loopinvgo_rerun_promptupd_persona_v2_step3retry4/step2_cpp_two_loopinvgo_rerun_promptupd_persona_v2__shared__dede18dc/proof/ArrayCopy_While/ArrayCopy_While__mode_novel__ex_01__block_0__c748fa5e_cpp/proof/saturate_actuator_commands.v

@@ -0,0 +1,177 @@
+Require Import step2_cpp_two_loopinvgo_rerun_promptupd_persona_v2__shared__dede18dc.proof.prelude.proof.
+
+
+
+Require step2_cpp_two_loopinvgo_rerun_promptupd_persona_v2__shared__dede18dc.src.ArrayCopy_While.ArrayCopy_While__mode_novel__ex_01__block_0__c748fa5e_cpp.
+#[local] Notation source := step2_cpp_two_loopinvgo_rerun_promptupd_persona_v2__shared__dede18dc.src.ArrayCopy_While.ArrayCopy_While__mode_novel__ex_01__block_0__c748fa5e_cpp.module.
+Require Import step2_cpp_two_loopinvgo_rerun_promptupd_persona_v2__shared__dede18dc.proof.ArrayCopy_While.ArrayCopy_While__mode_novel__ex_01__block_0__c748fa5e_cpp.spec.
+
+(* wp hints *)
+Export arrayLR_hints.
+(* general big sep automation *)
+Export hints.big_sep_hints.
+
+Export OnlyProvableFEqual.
+
+Export ptr_normalization_hints.
+
+(* Export prim.AgressivePrimR. *)
+
+Export normalize.only_provable_norm.
+
+Section with_cpp.
+    Context `{Σ : cpp_logic} `{MOD : source ⊧ σ}.
+    Set Default Proof Using "MOD".
+
+    Open Scope Z_scope.
+    #[global,program] Instance CaseSplit_Zlt eql eqr (a b : Z) :
+      TCMaybe (SolveArith (b ≤ a + 1)) eql ->
+      TCMaybe (SolveArith (a ≤ b)) eqr ->
+      CaseSplit (a <? b) :=
+      { on_true := if eql then b = a + 1 else a < b ;
+        on_false := if eqr then a = b else b <= a }.
+    Next Obligation.
+      intros ? ? ? ? L R. destruct (a <? b) eqn:?; constructor.
+      + destruct L as [ [L] |]; destruct R as [[R]|]; lia.
+      + destruct R as [[R]|]; lia.
+      Qed.
+    Next Obligation.
+      intros ? ? ? ? L R.
+      + destruct L as [ [L] |]; destruct R as [[R]|]; lia.
+    Qed.
+
+    (*@BEGIN:"proof"@*)
+    Lemma saturate_actuator_commands_ok : verify[source] "saturate_actuator_commands(int *, int, int, int)".
+    Proof.
+      verify_spec; go.
+
+      wp_for (fun ρ => Exists (i sat : Z) cmd_values_at_exit,
+        i_addr         |-> intR 1$m i           **
+        saturated_addr |-> intR 1$m sat         **
+        cmd_addr       |-> ptrR<"int"> 1$m cmd **   (* ← stack slot only *)
+        n_addr         |-> intR 1$m n        **
+        min_cmd_addr   |-> intR 1$m min_cmd        **
+        max_cmd_addr   |-> intR 1$m max_cmd           **
+        cmd |-> arrayLR "int" 0 i (λ x : Z, intR 1$m x) (sliceZ 0 0 i cmd_values_at_exit) **
+        cmd |-> arrayLR "int" i n (λ x : Z, intR 1$m x) (sliceZ 0 i n cmd_values_at_entry) **
+        [| cmd_values_at_exit =
+            (fun v =>
+            if bool_decide (v < min_cmd) then min_cmd
+            else if bool_decide (max_cmd < v) then max_cmd
+            else v) <$> cmd_values_at_entry
+        |] **
+        (** TODO: *)
+        (* [| sat = lengthZ (filter (λ v : Z, bool_decide (v < min_cmd ∨ max_cmd < v)) (sliceZ 0 0 i cmd_values_at_exit)) |] ** *)
+        [| (0 <= i <= n)%Z |] **
+        [| (0 <= sat <= i)%Z |])%Z; go.
+      (* Unset SsrIdents.
+      rename _t_ into i. *)
+      wp_if; go.
+      { wp_if => MinCmp; go.
+        {
+          rewrite list_lookupZ_fmap.
+          (* iPureIntro. *)
+          destruct (cmd_values_at_entry !! _) eqn:CmdLookup; simplify_eq/=.
+          vc_split; work.
+        }
+        wp_if => MaxCmp; go.
+        {
+          rewrite list_lookupZ_fmap.
+          (* iPureIntro. *)
+          destruct (cmd_values_at_entry !! _) eqn:CmdLookup; simplify_eq/=.
+          vc_split; work.
+          vc_split; work.
+        }
+        {
+          rewrite list_lookupZ_fmap.
+          (* iPureIntro. *)
+          destruct (cmd_values_at_entry !! _) eqn:CmdLookup; simplify_eq/=.
+          vc_split; work.
+          vc_split; work.
+        }
+      }
+      go.
+      wfocus [| _ |] "". {
+        iPureIntro.
+        rewrite sliceZ_self //. {
+          rewrite map_fmap.
+          apply fmap_ext_in => x Hin.
+          repeat vc_split; lia.
+        }
+        rewrite lengthN_map. lia.
+      }
+      Import prim.AgressivePrimR.
+      work.
+      (* TODO last goal *)
+      enough (_t_0 = length (List.filter (λ v : Z, (v <? min_cmd) || (max_cmd <? v)) cmd_values_at_entry)) by done.
+      admit.
+      (* TODO: add to invariant
+      [| sat = lengthZ (filter (λ v : Z, bool_decide (v < min_cmd ∨ max_cmd < v)) (sliceZ 0 0 i cmd_values_at_exit)) |] ** *)
+      all: fail.
+    Admitted.
+    (*@END@*)
+
+    (*@BEGIN:"insert"@*)
+(*
+FAILED STEP4 PROOF ATTEMPT
+lemma: saturate_actuator_commands_ok
+task_id: proof/ArrayCopy_While/ArrayCopy_While__mode_novel__ex_01__block_0__c748fa5e_cpp/proof/saturate_actuator_commands.v#Lemma:saturate_actuator_commands_ok
+status: Failure
+failure_reason: ["Other", "Agent failed: The next request would exceed the request_limit of 30"]
+final_tactic: backtracked(1)
+tactic_trace:
+  01. [OK] verify_spec; go
+  02. [OK] wp_for (fun ρ => Exists i sat,
+  i_addr |-> intR 1$m i **
+  saturated_addr |-> intR 1$m sat **
+  cmd_addr |-> ptrR<"int"> 1$m _v_3 **
+  n_addr |-> intR 1$m _v_4 **
+  min_cmd_addr |-> intR 1$m _v_5 **
+  max_cmd_addr |-> intR 1$m v **
+  [| (0 <= i <= _v_4)%Z |] **
+  [| (0 <= sat <=...(truncated)
+
+  03. [OK] iSplit; [iPureIntro; lia|gather_all].
+  04. [OK] iSplit; [iPureIntro; lia|iFrame].
+  05. [OK] destruct GUARDS.
+  06. [OK] backtracked(1)
+  07. [OK] backtracked(1)
+  08. [OK] wp_for (fun ρ => Exists i sat,
+  i_addr |-> intR 1$m i **
+  saturated_addr |-> intR 1$m sat **
+  cmd_addr |-> ptrR<"int"> 1$m _v_3 **
+  n_addr |-> intR 1$m _v_4 **
+  min_cmd_addr |-> intR 1$m _v_5 **
+  max_cmd_addr |-> intR 1$m v **
+  [| (0 <= i)%Z |] **
+  [| (sat = i)%Z |])%Z; g...(truncated)
+  09. [OK] wp_if.
+  10. [OK] backtracked(2)
+  11. [OK] wp_for (fun ρ => Exists i sat,
+  i_addr |-> intR 1$m i **
+  saturated_addr |-> intR 1$m sat **
+  cmd_addr |-> ptrR<"int"> 1$m _v_3 **
+  n_addr |-> intR 1$m _v_4 **
+  min_cmd_addr |-> intR 1$m _v_5 **
+  max_cmd_addr |-> intR 1$m v **
+  [| (0 <= i)%Z |] **
+  [| (0 <= sat <= i)%Z |]...(truncated)
+  12. [OK] wp_if.
+  13. [OK] go.
+  14. [OK] iExists _, _.
+  15. [OK] destruct GUARDS.
+  16. [OK] iSplit.
+  17. [OK] go.
+  18. [OK] unfold ptrR in *.
+  19. [OK] iPureIntro.
+  20. [OK] iFrame.
+  21. [OK] unfold valid_ptr.
+  22. [FAIL] Qed.
+      error: Qed failed - proof not complete
+  23. [FAIL] backtracked(20)
+      error: Backtrack failed
+  24. [OK] Search valid_ptr.
+  25. [OK] backtracked(1)
+*)
+(*@END@*)
+End with_cpp.