diff --git a/config/caisar-detection-data.conf b/config/caisar-detection-data.conf
index 9d822510e83fab2fd09fcf939cd7e283df119868..e674e9c161c73b279245c59ab1deaae579e1e790 100644
--- a/config/caisar-detection-data.conf
+++ b/config/caisar-detection-data.conf
@@ -1,3 +1,25 @@
+##########################################################################
+#                                                                        #
+#  This file is part of CAISAR.                                          #
+#                                                                        #
+#  Copyright (C) 2022                                                    #
+#    CEA (Commissariat à l'énergie atomique et aux énergies              #
+#         alternatives)                                                  #
+#                                                                        #
+#  You can redistribute it and/or modify it under the terms of the GNU   #
+#  Lesser General Public License as published by the Free Software       #
+#  Foundation, version 2.1.                                              #
+#                                                                        #
+#  It 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 Lesser General Public License for more details.                   #
+#                                                                        #
+#  See the GNU Lesser General Public License version 2.1                 #
+#  for more details (enclosed in the file licenses/LGPLv2.1).            #
+#                                                                        #
+##########################################################################
+
 [ATP alt-ergo]
 name = "Alt-Ergo"
 exec = "alt-ergo"
diff --git a/config/drivers/marabou.drv b/config/drivers/marabou.drv
index e0270273f5d783feb487f2a9ec3074d9e2e3e36e..dc29a0636d0043008d82ccfd6e3b676fbc91f8b6 100644
--- a/config/drivers/marabou.drv
+++ b/config/drivers/marabou.drv
@@ -1,3 +1,25 @@
+(**************************************************************************)
+(*                                                                        *)
+(*  This file is part of CAISAR.                                          *)
+(*                                                                        *)
+(*  Copyright (C) 2022                                                    *)
+(*    CEA (Commissariat à l'énergie atomique et aux énergies              *)
+(*         alternatives)                                                  *)
+(*                                                                        *)
+(*  You can redistribute it and/or modify it under the terms of the GNU   *)
+(*  Lesser General Public License as published by the Free Software       *)
+(*  Foundation, version 2.1.                                              *)
+(*                                                                        *)
+(*  It 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 Lesser General Public License for more details.                   *)
+(*                                                                        *)
+(*  See the GNU Lesser General Public License version 2.1                 *)
+(*  for more details (enclosed in the file licenses/LGPLv2.1).            *)
+(*                                                                        *)
+(**************************************************************************)
+
 (* Why3 drivers for Marabou *)
 
 printer "marabou"
diff --git a/config/drivers/pyrat.drv b/config/drivers/pyrat.drv
index 4cb678e43f3b0b12a4afd479319d1aec51935d65..d9cc1c9e43d421d4d03bcfb76e04aa68ebee8da6 100644
--- a/config/drivers/pyrat.drv
+++ b/config/drivers/pyrat.drv
@@ -1,3 +1,25 @@
+(**************************************************************************)
+(*                                                                        *)
+(*  This file is part of CAISAR.                                          *)
+(*                                                                        *)
+(*  Copyright (C) 2022                                                    *)
+(*    CEA (Commissariat à l'énergie atomique et aux énergies              *)
+(*         alternatives)                                                  *)
+(*                                                                        *)
+(*  You can redistribute it and/or modify it under the terms of the GNU   *)
+(*  Lesser General Public License as published by the Free Software       *)
+(*  Foundation, version 2.1.                                              *)
+(*                                                                        *)
+(*  It 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 Lesser General Public License for more details.                   *)
+(*                                                                        *)
+(*  See the GNU Lesser General Public License version 2.1                 *)
+(*  for more details (enclosed in the file licenses/LGPLv2.1).            *)
+(*                                                                        *)
+(**************************************************************************)
+
 (* Why3 drivers for PyRAT *)
 
 printer "pyrat"
diff --git a/config/drivers/saver.drv b/config/drivers/saver.drv
index cbb09cb76287dc6a339a2cbe5080dafe7676617a..9f66622300d45f270fb59971b39834b465b677da 100644
--- a/config/drivers/saver.drv
+++ b/config/drivers/saver.drv
@@ -1,3 +1,25 @@
+(**************************************************************************)
+(*                                                                        *)
+(*  This file is part of CAISAR.                                          *)
+(*                                                                        *)
+(*  Copyright (C) 2022                                                    *)
+(*    CEA (Commissariat à l'énergie atomique et aux énergies              *)
+(*         alternatives)                                                  *)
+(*                                                                        *)
+(*  You can redistribute it and/or modify it under the terms of the GNU   *)
+(*  Lesser General Public License as published by the Free Software       *)
+(*  Foundation, version 2.1.                                              *)
+(*                                                                        *)
+(*  It 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 Lesser General Public License for more details.                   *)
+(*                                                                        *)
+(*  See the GNU Lesser General Public License version 2.1                 *)
+(*  for more details (enclosed in the file licenses/LGPLv2.1).            *)
+(*                                                                        *)
+(**************************************************************************)
+
 (* Why3 drivers for SAVER *)
 
 theory BuiltIn
diff --git a/lib/nnet/nnet.ml b/lib/nnet/nnet.ml
index 9f139babb343e69e1758b06a0a6cf2477980fad5..1887a979f343453671cee1a417115c9f36928209 100644
--- a/lib/nnet/nnet.ml
+++ b/lib/nnet/nnet.ml
@@ -2,6 +2,22 @@
 (*                                                                        *)
 (*  This file is part of CAISAR.                                          *)
 (*                                                                        *)
+(*  Copyright (C) 2022                                                    *)
+(*    CEA (Commissariat à l'énergie atomique et aux énergies              *)
+(*         alternatives)                                                  *)
+(*                                                                        *)
+(*  You can redistribute it and/or modify it under the terms of the GNU   *)
+(*  Lesser General Public License as published by the Free Software       *)
+(*  Foundation, version 2.1.                                              *)
+(*                                                                        *)
+(*  It 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 Lesser General Public License for more details.                   *)
+(*                                                                        *)
+(*  See the GNU Lesser General Public License version 2.1                 *)
+(*  for more details (enclosed in the file licenses/LGPLv2.1).            *)
+(*                                                                        *)
 (**************************************************************************)
 
 open Base
diff --git a/lib/nnet/nnet.mli b/lib/nnet/nnet.mli
index e42999fd95658d84b2cafa7db6ddeaaf2156d68a..be73f684f19fc326a64f0ff9a40fafe66e02ba78 100644
--- a/lib/nnet/nnet.mli
+++ b/lib/nnet/nnet.mli
@@ -2,6 +2,22 @@
 (*                                                                        *)
 (*  This file is part of CAISAR.                                          *)
 (*                                                                        *)
+(*  Copyright (C) 2022                                                    *)
+(*    CEA (Commissariat à l'énergie atomique et aux énergies              *)
+(*         alternatives)                                                  *)
+(*                                                                        *)
+(*  You can redistribute it and/or modify it under the terms of the GNU   *)
+(*  Lesser General Public License as published by the Free Software       *)
+(*  Foundation, version 2.1.                                              *)
+(*                                                                        *)
+(*  It 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 Lesser General Public License for more details.                   *)
+(*                                                                        *)
+(*  See the GNU Lesser General Public License version 2.1                 *)
+(*  for more details (enclosed in the file licenses/LGPLv2.1).            *)
+(*                                                                        *)
 (**************************************************************************)
 
 type t = private {
diff --git a/lib/onnx/onnx.ml b/lib/onnx/onnx.ml
index 9e61f4cac120e01f0cf0c8a22587ad84b2f5401f..2ee9221d2a1eba14f78c7e8629034192ff234879 100644
--- a/lib/onnx/onnx.ml
+++ b/lib/onnx/onnx.ml
@@ -2,18 +2,33 @@
 (*                                                                        *)
 (*  This file is part of CAISAR.                                          *)
 (*                                                                        *)
+(*  Copyright (C) 2022                                                    *)
+(*    CEA (Commissariat à l'énergie atomique et aux énergies              *)
+(*         alternatives)                                                  *)
+(*                                                                        *)
+(*  You can redistribute it and/or modify it under the terms of the GNU   *)
+(*  Lesser General Public License as published by the Free Software       *)
+(*  Foundation, version 2.1.                                              *)
+(*                                                                        *)
+(*  It 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 Lesser General Public License for more details.                   *)
+(*                                                                        *)
+(*  See the GNU Lesser General Public License version 2.1                 *)
+(*  for more details (enclosed in the file licenses/LGPLv2.1).            *)
+(*                                                                        *)
 (**************************************************************************)
 
 open Base
 module Format = Caml.Format
 module Fun = Caml.Fun
 module Oproto = Onnx_protoc (* Autogenerated during compilation *)
-
 module Oprotom = Oproto.Onnx.ModelProto
 
 type t = {
-  n_inputs : int;  (* Number of inputs. *)
-  n_outputs : int;  (* Number of outputs. *)
+  n_inputs : int; (* Number of inputs. *)
+  n_outputs : int; (* Number of outputs. *)
 }
 
 (* ONNX format handling. *)
diff --git a/lib/onnx/onnx.mli b/lib/onnx/onnx.mli
index b017810b076de7a704598079545f57d161a5344e..776e3124dfe291e614ce0d09fa127cd195f111bd 100644
--- a/lib/onnx/onnx.mli
+++ b/lib/onnx/onnx.mli
@@ -2,6 +2,22 @@
 (*                                                                        *)
 (*  This file is part of CAISAR.                                          *)
 (*                                                                        *)
+(*  Copyright (C) 2022                                                    *)
+(*    CEA (Commissariat à l'énergie atomique et aux énergies              *)
+(*         alternatives)                                                  *)
+(*                                                                        *)
+(*  You can redistribute it and/or modify it under the terms of the GNU   *)
+(*  Lesser General Public License as published by the Free Software       *)
+(*  Foundation, version 2.1.                                              *)
+(*                                                                        *)
+(*  It 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 Lesser General Public License for more details.                   *)
+(*                                                                        *)
+(*  See the GNU Lesser General Public License version 2.1                 *)
+(*  for more details (enclosed in the file licenses/LGPLv2.1).            *)
+(*                                                                        *)
 (**************************************************************************)
 
 type t = private {
diff --git a/lib/ovo/ovo.ml b/lib/ovo/ovo.ml
index e0306236aed0fcde9ac75a7c2ff5672ec8e81ecb..fcc630820d6a213ef9895b7146f7571d9dbf4678 100644
--- a/lib/ovo/ovo.ml
+++ b/lib/ovo/ovo.ml
@@ -2,6 +2,22 @@
 (*                                                                        *)
 (*  This file is part of CAISAR.                                          *)
 (*                                                                        *)
+(*  Copyright (C) 2022                                                    *)
+(*    CEA (Commissariat à l'énergie atomique et aux énergies              *)
+(*         alternatives)                                                  *)
+(*                                                                        *)
+(*  You can redistribute it and/or modify it under the terms of the GNU   *)
+(*  Lesser General Public License as published by the Free Software       *)
+(*  Foundation, version 2.1.                                              *)
+(*                                                                        *)
+(*  It 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 Lesser General Public License for more details.                   *)
+(*                                                                        *)
+(*  See the GNU Lesser General Public License version 2.1                 *)
+(*  for more details (enclosed in the file licenses/LGPLv2.1).            *)
+(*                                                                        *)
 (**************************************************************************)
 
 open Base
diff --git a/lib/ovo/ovo.mli b/lib/ovo/ovo.mli
index 74411916c569e4f17e2c14549c9cad6983e09b55..eb5682f4067b7c9ccbb25ba0dc258a0bb285bcaf 100644
--- a/lib/ovo/ovo.mli
+++ b/lib/ovo/ovo.mli
@@ -2,6 +2,22 @@
 (*                                                                        *)
 (*  This file is part of CAISAR.                                          *)
 (*                                                                        *)
+(*  Copyright (C) 2022                                                    *)
+(*    CEA (Commissariat à l'énergie atomique et aux énergies              *)
+(*         alternatives)                                                  *)
+(*                                                                        *)
+(*  You can redistribute it and/or modify it under the terms of the GNU   *)
+(*  Lesser General Public License as published by the Free Software       *)
+(*  Foundation, version 2.1.                                              *)
+(*                                                                        *)
+(*  It 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 Lesser General Public License for more details.                   *)
+(*                                                                        *)
+(*  See the GNU Lesser General Public License version 2.1                 *)
+(*  for more details (enclosed in the file licenses/LGPLv2.1).            *)
+(*                                                                        *)
 (**************************************************************************)
 
 type t = private {
diff --git a/licenses/LGPLv2.1 b/licenses/LGPLv2.1
new file mode 100644
index 0000000000000000000000000000000000000000..8c177f8bedc4a734d40312bb165035be1b22fad4
--- /dev/null
+++ b/licenses/LGPLv2.1
@@ -0,0 +1,458 @@
+		  GNU LESSER GENERAL PUBLIC LICENSE
+		       Version 2.1, February 1999
+
+ Copyright (C) 1991, 1999 Free Software Foundation, Inc.
+ 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+[This is the first released version of the Lesser GPL.  It also counts
+ as the successor of the GNU Library Public License, version 2, hence
+ the version number 2.1.]
+
+			    Preamble
+
+  The licenses for most software are designed to take away your
+freedom to share and change it.  By contrast, the GNU General Public
+Licenses are intended to guarantee your freedom to share and change
+free software--to make sure the software is free for all its users.
+
+  This license, the Lesser General Public License, applies to some
+specially designated software packages--typically libraries--of the
+Free Software Foundation and other authors who decide to use it.  You
+can use it too, but we suggest you first think carefully about whether
+this license or the ordinary General Public License is the better
+strategy to use in any particular case, based on the explanations below.
+
+  When we speak of free software, we are referring to freedom of use,
+not price.  Our General Public Licenses are designed to make sure that
+you have the freedom to distribute copies of free software (and charge
+for this service if you wish); that you receive source code or can get
+it if you want it; that you can change the software and use pieces of
+it in new free programs; and that you are informed that you can do
+these things.
+
+  To protect your rights, we need to make restrictions that forbid
+distributors to deny you these rights or to ask you to surrender these
+rights.  These restrictions translate to certain responsibilities for
+you if you distribute copies of the library or if you modify it.
+
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+it.  And you must show them these terms so they know their rights.
+
+  We protect your rights with a two-step method: (1) we copyright the
+library, and (2) we offer you this license, which gives you legal
+permission to copy, distribute and/or modify the library.
+
+  To protect each distributor, we want to make it very clear that
+there is no warranty for the free library.  Also, if the library is
+modified by someone else and passed on, the recipients should know
+that what they have is not the original version, so that the original
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+
+  Finally, software patents pose a constant threat to the existence of
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+
+  Most GNU software, including some libraries, is covered by the
+ordinary GNU General Public License.  This license, the GNU Lesser
+General Public License, applies to certain designated libraries, and
+is quite different from the ordinary General Public License.  We use
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+
+  When a program is linked with a library, whether statically or using
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+General Public License therefore permits such linking only if the
+entire combination fits its criteria of freedom.  The Lesser General
+Public License permits more lax criteria for linking other code with
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+
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+   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+  0. This License Agreement applies to any software library or other
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+This section is intended to make thoroughly clear what is believed to
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+  12. If the distribution and/or use of the Library is restricted in
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+excluded.  In such case, this License incorporates the limitation as if
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+  13. The Free Software Foundation may publish revised and/or new
+versions of the Lesser General Public License from time to time.
+Such new versions will be similar in spirit to the present version,
+but may differ in detail to address new problems or concerns.
+
+Each version is given a distinguishing version number.  If the Library
+specifies a version number of this License which applies to it and
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+conditions either of that version or of any later version published by
+the Free Software Foundation.  If the Library does not specify a
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+  14. If you wish to incorporate parts of the Library into other free
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+SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
+DAMAGES.
+
+		     END OF TERMS AND CONDITIONS
diff --git a/src/autodetect.ml b/src/autodetect.ml
index 4596b104f6b44f2a37fdde6bf7fa2b5525c10547..3f98d68497deef4c250c8f3c9bb0cd0ebe077d0c 100644
--- a/src/autodetect.ml
+++ b/src/autodetect.ml
@@ -2,6 +2,22 @@
 (*                                                                        *)
 (*  This file is part of CAISAR.                                          *)
 (*                                                                        *)
+(*  Copyright (C) 2022                                                    *)
+(*    CEA (Commissariat à l'énergie atomique et aux énergies              *)
+(*         alternatives)                                                  *)
+(*                                                                        *)
+(*  You can redistribute it and/or modify it under the terms of the GNU   *)
+(*  Lesser General Public License as published by the Free Software       *)
+(*  Foundation, version 2.1.                                              *)
+(*                                                                        *)
+(*  It 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 Lesser General Public License for more details.                   *)
+(*                                                                        *)
+(*  See the GNU Lesser General Public License version 2.1                 *)
+(*  for more details (enclosed in the file licenses/LGPLv2.1).            *)
+(*                                                                        *)
 (**************************************************************************)
 
 open Why3
diff --git a/src/autodetect.mli b/src/autodetect.mli
index e755ada0156a80de1b3e2b1d4cd48bccf3e60f7e..ccd02cb04380aeb0a6a8fa50d1cc4010f42c9a20 100644
--- a/src/autodetect.mli
+++ b/src/autodetect.mli
@@ -2,6 +2,22 @@
 (*                                                                        *)
 (*  This file is part of CAISAR.                                          *)
 (*                                                                        *)
+(*  Copyright (C) 2022                                                    *)
+(*    CEA (Commissariat à l'énergie atomique et aux énergies              *)
+(*         alternatives)                                                  *)
+(*                                                                        *)
+(*  You can redistribute it and/or modify it under the terms of the GNU   *)
+(*  Lesser General Public License as published by the Free Software       *)
+(*  Foundation, version 2.1.                                              *)
+(*                                                                        *)
+(*  It 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 Lesser General Public License for more details.                   *)
+(*                                                                        *)
+(*  See the GNU Lesser General Public License version 2.1                 *)
+(*  for more details (enclosed in the file licenses/LGPLv2.1).            *)
+(*                                                                        *)
 (**************************************************************************)
 
 val autodetection : ?debug:bool -> unit -> Why3.Whyconf.config
diff --git a/src/language.ml b/src/language.ml
index 9df892e67ef621b1111e7b5e383126a2b6b97373..df0d8756887d7bd793c66620467b7bee7671588a 100644
--- a/src/language.ml
+++ b/src/language.ml
@@ -2,6 +2,22 @@
 (*                                                                        *)
 (*  This file is part of CAISAR.                                          *)
 (*                                                                        *)
+(*  Copyright (C) 2022                                                    *)
+(*    CEA (Commissariat à l'énergie atomique et aux énergies              *)
+(*         alternatives)                                                  *)
+(*                                                                        *)
+(*  You can redistribute it and/or modify it under the terms of the GNU   *)
+(*  Lesser General Public License as published by the Free Software       *)
+(*  Foundation, version 2.1.                                              *)
+(*                                                                        *)
+(*  It 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 Lesser General Public License for more details.                   *)
+(*                                                                        *)
+(*  See the GNU Lesser General Public License version 2.1                 *)
+(*  for more details (enclosed in the file licenses/LGPLv2.1).            *)
+(*                                                                        *)
 (**************************************************************************)
 
 open Why3
@@ -26,7 +42,7 @@ let lookup_loaded_nets = Term.Hls.find_opt loaded_nets
 let lookup_loaded_svms = Term.Hls.find_opt loaded_svms
 
 let register_nn_as_tuple nb_inputs nb_outputs filename env =
-let net = Pmodule.read_module env [ "caisar" ] "NN" in
+  let net = Pmodule.read_module env [ "caisar" ] "NN" in
   let ioshape_input_type =
     Ty.ty_app Theory.(ns_find_ts net.mod_theory.th_export [ "input_type" ]) []
   in
diff --git a/src/language.mli b/src/language.mli
index 515e94ca2b1718b2922b7620260ac5f0c3f52198..110da05e29bcd308ab04e0416558a51742e9ff4b 100644
--- a/src/language.mli
+++ b/src/language.mli
@@ -2,6 +2,22 @@
 (*                                                                        *)
 (*  This file is part of CAISAR.                                          *)
 (*                                                                        *)
+(*  Copyright (C) 2022                                                    *)
+(*    CEA (Commissariat à l'énergie atomique et aux énergies              *)
+(*         alternatives)                                                  *)
+(*                                                                        *)
+(*  You can redistribute it and/or modify it under the terms of the GNU   *)
+(*  Lesser General Public License as published by the Free Software       *)
+(*  Foundation, version 2.1.                                              *)
+(*                                                                        *)
+(*  It 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 Lesser General Public License for more details.                   *)
+(*                                                                        *)
+(*  See the GNU Lesser General Public License version 2.1                 *)
+(*  for more details (enclosed in the file licenses/LGPLv2.1).            *)
+(*                                                                        *)
 (**************************************************************************)
 
 open Why3
diff --git a/src/main.ml b/src/main.ml
index b79b5189661a56451325b571a7dc4350f105a31e..681a3e9bf94df4bfaf19a813f811597f8157a1ff 100644
--- a/src/main.ml
+++ b/src/main.ml
@@ -2,6 +2,22 @@
 (*                                                                        *)
 (*  This file is part of CAISAR.                                          *)
 (*                                                                        *)
+(*  Copyright (C) 2022                                                    *)
+(*    CEA (Commissariat à l'énergie atomique et aux énergies              *)
+(*         alternatives)                                                  *)
+(*                                                                        *)
+(*  You can redistribute it and/or modify it under the terms of the GNU   *)
+(*  Lesser General Public License as published by the Free Software       *)
+(*  Foundation, version 2.1.                                              *)
+(*                                                                        *)
+(*  It 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 Lesser General Public License for more details.                   *)
+(*                                                                        *)
+(*  See the GNU Lesser General Public License version 2.1                 *)
+(*  for more details (enclosed in the file licenses/LGPLv2.1).            *)
+(*                                                                        *)
 (**************************************************************************)
 
 open Base
diff --git a/src/printers/marabou.ml b/src/printers/marabou.ml
index b91da57979c6b1b7fa47d4a5ffd3535ab72086f2..3ff59388b85de3e00f0c987ff2466b01c25ec3ca 100644
--- a/src/printers/marabou.ml
+++ b/src/printers/marabou.ml
@@ -2,6 +2,22 @@
 (*                                                                        *)
 (*  This file is part of CAISAR.                                          *)
 (*                                                                        *)
+(*  Copyright (C) 2022                                                    *)
+(*    CEA (Commissariat à l'énergie atomique et aux énergies              *)
+(*         alternatives)                                                  *)
+(*                                                                        *)
+(*  You can redistribute it and/or modify it under the terms of the GNU   *)
+(*  Lesser General Public License as published by the Free Software       *)
+(*  Foundation, version 2.1.                                              *)
+(*                                                                        *)
+(*  It 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 Lesser General Public License for more details.                   *)
+(*                                                                        *)
+(*  See the GNU Lesser General Public License version 2.1                 *)
+(*  for more details (enclosed in the file licenses/LGPLv2.1).            *)
+(*                                                                        *)
 (**************************************************************************)
 
 open Why3
diff --git a/src/printers/pyrat.ml b/src/printers/pyrat.ml
index 67a7f7668e2847cec41737ba6a49389b266801ff..0a8132c2819e36f21d117b1f20b2a3e8e54de4b0 100644
--- a/src/printers/pyrat.ml
+++ b/src/printers/pyrat.ml
@@ -2,6 +2,22 @@
 (*                                                                        *)
 (*  This file is part of CAISAR.                                          *)
 (*                                                                        *)
+(*  Copyright (C) 2022                                                    *)
+(*    CEA (Commissariat à l'énergie atomique et aux énergies              *)
+(*         alternatives)                                                  *)
+(*                                                                        *)
+(*  You can redistribute it and/or modify it under the terms of the GNU   *)
+(*  Lesser General Public License as published by the Free Software       *)
+(*  Foundation, version 2.1.                                              *)
+(*                                                                        *)
+(*  It 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 Lesser General Public License for more details.                   *)
+(*                                                                        *)
+(*  See the GNU Lesser General Public License version 2.1                 *)
+(*  for more details (enclosed in the file licenses/LGPLv2.1).            *)
+(*                                                                        *)
 (**************************************************************************)
 
 open Why3
diff --git a/src/prover.ml b/src/prover.ml
index ead7cdf3e6654e28f40bac71d1f0cd5e51baa840..415a6d70375c03e9e55067dc1be1d0446fa6c6d9 100644
--- a/src/prover.ml
+++ b/src/prover.ml
@@ -2,6 +2,22 @@
 (*                                                                        *)
 (*  This file is part of CAISAR.                                          *)
 (*                                                                        *)
+(*  Copyright (C) 2022                                                    *)
+(*    CEA (Commissariat à l'énergie atomique et aux énergies              *)
+(*         alternatives)                                                  *)
+(*                                                                        *)
+(*  You can redistribute it and/or modify it under the terms of the GNU   *)
+(*  Lesser General Public License as published by the Free Software       *)
+(*  Foundation, version 2.1.                                              *)
+(*                                                                        *)
+(*  It 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 Lesser General Public License for more details.                   *)
+(*                                                                        *)
+(*  See the GNU Lesser General Public License version 2.1                 *)
+(*  for more details (enclosed in the file licenses/LGPLv2.1).            *)
+(*                                                                        *)
 (**************************************************************************)
 
 type t = Marabou | Pyrat | Saver
diff --git a/src/prover.mli b/src/prover.mli
index 2c10aba7e819bf16a0a4205a087ec546b32f8135..723788ffcffe6ce60c9f0df5d609120e1e50f7b4 100644
--- a/src/prover.mli
+++ b/src/prover.mli
@@ -2,6 +2,22 @@
 (*                                                                        *)
 (*  This file is part of CAISAR.                                          *)
 (*                                                                        *)
+(*  Copyright (C) 2022                                                    *)
+(*    CEA (Commissariat à l'énergie atomique et aux énergies              *)
+(*         alternatives)                                                  *)
+(*                                                                        *)
+(*  You can redistribute it and/or modify it under the terms of the GNU   *)
+(*  Lesser General Public License as published by the Free Software       *)
+(*  Foundation, version 2.1.                                              *)
+(*                                                                        *)
+(*  It 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 Lesser General Public License for more details.                   *)
+(*                                                                        *)
+(*  See the GNU Lesser General Public License version 2.1                 *)
+(*  for more details (enclosed in the file licenses/LGPLv2.1).            *)
+(*                                                                        *)
 (**************************************************************************)
 
 type t
diff --git a/src/transformations/native_nn_prover.ml b/src/transformations/native_nn_prover.ml
index d6753945a840d2842a6000b3d8a38ff1e121fc0d..889085b80b0d5dab28c3ef283bf43c5808646f5f 100644
--- a/src/transformations/native_nn_prover.ml
+++ b/src/transformations/native_nn_prover.ml
@@ -2,6 +2,22 @@
 (*                                                                        *)
 (*  This file is part of CAISAR.                                          *)
 (*                                                                        *)
+(*  Copyright (C) 2022                                                    *)
+(*    CEA (Commissariat à l'énergie atomique et aux énergies              *)
+(*         alternatives)                                                  *)
+(*                                                                        *)
+(*  You can redistribute it and/or modify it under the terms of the GNU   *)
+(*  Lesser General Public License as published by the Free Software       *)
+(*  Foundation, version 2.1.                                              *)
+(*                                                                        *)
+(*  It 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 Lesser General Public License for more details.                   *)
+(*                                                                        *)
+(*  See the GNU Lesser General Public License version 2.1                 *)
+(*  for more details (enclosed in the file licenses/LGPLv2.1).            *)
+(*                                                                        *)
 (**************************************************************************)
 
 open Why3
diff --git a/src/transformations/native_nn_prover.mli b/src/transformations/native_nn_prover.mli
index 67dfd65b441ec6065b99f39dcf2b4fd2a24906eb..e211723bdd3b2faf9f1ddefd54790b258b7e6291 100644
--- a/src/transformations/native_nn_prover.mli
+++ b/src/transformations/native_nn_prover.mli
@@ -2,6 +2,22 @@
 (*                                                                        *)
 (*  This file is part of CAISAR.                                          *)
 (*                                                                        *)
+(*  Copyright (C) 2022                                                    *)
+(*    CEA (Commissariat à l'énergie atomique et aux énergies              *)
+(*         alternatives)                                                  *)
+(*                                                                        *)
+(*  You can redistribute it and/or modify it under the terms of the GNU   *)
+(*  Lesser General Public License as published by the Free Software       *)
+(*  Foundation, version 2.1.                                              *)
+(*                                                                        *)
+(*  It 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 Lesser General Public License for more details.                   *)
+(*                                                                        *)
+(*  See the GNU Lesser General Public License version 2.1                 *)
+(*  for more details (enclosed in the file licenses/LGPLv2.1).            *)
+(*                                                                        *)
 (**************************************************************************)
 
 open Why3
diff --git a/src/transformations/split_disjunction.ml b/src/transformations/split_disjunction.ml
index 96518e98a6408460bda5ea429b448fac8d8baf3f..7295542dd1f5489de25e1228c2c56b0b07fba0a1 100644
--- a/src/transformations/split_disjunction.ml
+++ b/src/transformations/split_disjunction.ml
@@ -2,6 +2,22 @@
 (*                                                                        *)
 (*  This file is part of CAISAR.                                          *)
 (*                                                                        *)
+(*  Copyright (C) 2022                                                    *)
+(*    CEA (Commissariat à l'énergie atomique et aux énergies              *)
+(*         alternatives)                                                  *)
+(*                                                                        *)
+(*  You can redistribute it and/or modify it under the terms of the GNU   *)
+(*  Lesser General Public License as published by the Free Software       *)
+(*  Foundation, version 2.1.                                              *)
+(*                                                                        *)
+(*  It 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 Lesser General Public License for more details.                   *)
+(*                                                                        *)
+(*  See the GNU Lesser General Public License version 2.1                 *)
+(*  for more details (enclosed in the file licenses/LGPLv2.1).            *)
+(*                                                                        *)
 (**************************************************************************)
 
 open Base
diff --git a/src/transformations/vars_on_lhs.ml b/src/transformations/vars_on_lhs.ml
index 75cd8eaee5b888745e6ea4f64ce6c0c2b858010b..6bed92046dc84aa51c4c01b16ad2aa3516b76c3c 100644
--- a/src/transformations/vars_on_lhs.ml
+++ b/src/transformations/vars_on_lhs.ml
@@ -2,6 +2,22 @@
 (*                                                                        *)
 (*  This file is part of CAISAR.                                          *)
 (*                                                                        *)
+(*  Copyright (C) 2022                                                    *)
+(*    CEA (Commissariat à l'énergie atomique et aux énergies              *)
+(*         alternatives)                                                  *)
+(*                                                                        *)
+(*  You can redistribute it and/or modify it under the terms of the GNU   *)
+(*  Lesser General Public License as published by the Free Software       *)
+(*  Foundation, version 2.1.                                              *)
+(*                                                                        *)
+(*  It 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 Lesser General Public License for more details.                   *)
+(*                                                                        *)
+(*  See the GNU Lesser General Public License version 2.1                 *)
+(*  for more details (enclosed in the file licenses/LGPLv2.1).            *)
+(*                                                                        *)
 (**************************************************************************)
 
 open Why3
diff --git a/src/transformations/vars_on_lhs.mli b/src/transformations/vars_on_lhs.mli
index 7914140eb39883e8d0e0b2244b98728739cc4cb4..694097b3b0dcc9bef16af63c6f16994dd897e63e 100644
--- a/src/transformations/vars_on_lhs.mli
+++ b/src/transformations/vars_on_lhs.mli
@@ -2,6 +2,22 @@
 (*                                                                        *)
 (*  This file is part of CAISAR.                                          *)
 (*                                                                        *)
+(*  Copyright (C) 2022                                                    *)
+(*    CEA (Commissariat à l'énergie atomique et aux énergies              *)
+(*         alternatives)                                                  *)
+(*                                                                        *)
+(*  You can redistribute it and/or modify it under the terms of the GNU   *)
+(*  Lesser General Public License as published by the Free Software       *)
+(*  Foundation, version 2.1.                                              *)
+(*                                                                        *)
+(*  It 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 Lesser General Public License for more details.                   *)
+(*                                                                        *)
+(*  See the GNU Lesser General Public License version 2.1                 *)
+(*  for more details (enclosed in the file licenses/LGPLv2.1).            *)
+(*                                                                        *)
 (**************************************************************************)
 
 val init : unit -> unit
diff --git a/src/verification.ml b/src/verification.ml
index 8fd42c575507e43f008c9ea42da74579dca9fb47..044f7b7848bd0db7f102266ff8179765c35a0258 100644
--- a/src/verification.ml
+++ b/src/verification.ml
@@ -2,6 +2,22 @@
 (*                                                                        *)
 (*  This file is part of CAISAR.                                          *)
 (*                                                                        *)
+(*  Copyright (C) 2022                                                    *)
+(*    CEA (Commissariat à l'énergie atomique et aux énergies              *)
+(*         alternatives)                                                  *)
+(*                                                                        *)
+(*  You can redistribute it and/or modify it under the terms of the GNU   *)
+(*  Lesser General Public License as published by the Free Software       *)
+(*  Foundation, version 2.1.                                              *)
+(*                                                                        *)
+(*  It 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 Lesser General Public License for more details.                   *)
+(*                                                                        *)
+(*  See the GNU Lesser General Public License version 2.1                 *)
+(*  for more details (enclosed in the file licenses/LGPLv2.1).            *)
+(*                                                                        *)
 (**************************************************************************)
 
 open Why3
diff --git a/src/verification.mli b/src/verification.mli
index 270048cdc2b03a1c2bfc3ad977da5ea2a3cacf39..a215d34eb6fa7e378f2fd7a584d1cc3ae87939c4 100644
--- a/src/verification.mli
+++ b/src/verification.mli
@@ -2,6 +2,22 @@
 (*                                                                        *)
 (*  This file is part of CAISAR.                                          *)
 (*                                                                        *)
+(*  Copyright (C) 2022                                                    *)
+(*    CEA (Commissariat à l'énergie atomique et aux énergies              *)
+(*         alternatives)                                                  *)
+(*                                                                        *)
+(*  You can redistribute it and/or modify it under the terms of the GNU   *)
+(*  Lesser General Public License as published by the Free Software       *)
+(*  Foundation, version 2.1.                                              *)
+(*                                                                        *)
+(*  It 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 Lesser General Public License for more details.                   *)
+(*                                                                        *)
+(*  See the GNU Lesser General Public License version 2.1                 *)
+(*  for more details (enclosed in the file licenses/LGPLv2.1).            *)
+(*                                                                        *)
 (**************************************************************************)
 
 module File : sig
diff --git a/stdlib/caisar.mlw b/stdlib/caisar.mlw
index 3f3d1f7f62201aae8c36bb41e124a26b056a24c3..7840d0481155e98c745c38bfc9308e53a0eabbab 100644
--- a/stdlib/caisar.mlw
+++ b/stdlib/caisar.mlw
@@ -1,3 +1,25 @@
+(**************************************************************************)
+(*                                                                        *)
+(*  This file is part of CAISAR.                                          *)
+(*                                                                        *)
+(*  Copyright (C) 2022                                                    *)
+(*    CEA (Commissariat à l'énergie atomique et aux énergies              *)
+(*         alternatives)                                                  *)
+(*                                                                        *)
+(*  You can redistribute it and/or modify it under the terms of the GNU   *)
+(*  Lesser General Public License as published by the Free Software       *)
+(*  Foundation, version 2.1.                                              *)
+(*                                                                        *)
+(*  It 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 Lesser General Public License for more details.                   *)
+(*                                                                        *)
+(*  See the GNU Lesser General Public License version 2.1                 *)
+(*  for more details (enclosed in the file licenses/LGPLv2.1).            *)
+(*                                                                        *)
+(**************************************************************************)
+
 theory NN
   use ieee_float.Float64
   type input_type = t
@@ -10,11 +32,9 @@ theory SVM
   type output_type = int
   type svm = {app : input_type -> output_type; num_input: int; num_classes: int}
 
-  predicate dist_linf (a: input_type) (b: input_type) (eps:t) (n: int)= 
-    forall i. 0 <= i < n ->
-      .- eps .< a i .- b i .< eps
+  predicate dist_linf (a: input_type) (b: input_type) (eps:t) (n: int) =
+    forall i. 0 <= i < n -> .- eps .< a i .- b i .< eps
 
   predicate robust_to (svm: svm) (a: input_type) (eps: t) =
-  forall b. dist_linf a b eps svm.num_input -> svm.app a = svm.app b
-
+    forall b. dist_linf a b eps svm.num_input -> svm.app a = svm.app b
 end