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+(*
+ * Vericert: Verified high-level synthesis.
+ * Copyright (C) 2023 Yann Herklotz <git@yannherklotz.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *)
+
+Require Import compcert.backend.Registers.
+Require Import compcert.common.AST.
+Require Import compcert.common.Errors.
+Require Import compcert.common.Linking.
+Require Import compcert.common.Globalenvs.
+Require Import compcert.common.Memory.
+Require Import compcert.common.Values.
+Require Import compcert.lib.Maps.
+
+Require Import vericert.common.Vericertlib.
+Require Import vericert.hls.GibleSeq.
+Require Import vericert.hls.GiblePar.
+Require Import vericert.hls.Gible.
+Require Import vericert.hls.GiblePargenproofEquiv.
+Require Import vericert.hls.GiblePargen.
+Require Import vericert.hls.Predicate.
+Require Import vericert.hls.Abstr.
+Require Import vericert.common.Monad.
+
+Module Import OptionExtra := MonadExtra(Option).
+
+#[local] Open Scope positive.
+#[local] Open Scope forest.
+#[local] Open Scope pred_op.
+
+#[local] Opaque simplify.
+#[local] Opaque deep_simplify.
+
+#[local] Ltac destr := destruct_match; try discriminate; [].
+
+Definition state_lessdef := GiblePargenproofEquiv.match_states.