Set transpiler default expand factor to 2

Author: x-mass

.github/workflows/build_linux.yml

@@ -84,7 +84,7 @@ jobs:
 
       - name: Checkout sources
         # We need full history, because during CMake config stage we are finding the nearest tag
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0
           submodules: false
@@ -309,7 +309,7 @@ jobs:
     with:
       artifact-name: ${{ needs.build-and-test-linux.outputs.examples-artifact-name }}
       # Update next line if you need new version of proof producer
-      proof-producer-ref: aa9619e52305c6a6a8e2797022da9d21c3962d08
+      proof-producer-ref: 6ddb405173c4fbf466c4764a440cc81675a4f12a
       refs: ${{ needs.handle-syncwith.outputs.prs-refs }}
       targets: ${{ needs.build-and-test-linux.outputs.prover-targets }}
 

bin/transpiler/src/main.cpp

@@ -82,7 +82,7 @@ inline std::vector<std::size_t> generate_random_step_list(const std::size_t r, c
 
 template<typename FRIScheme, typename FieldType>
 typename FRIScheme::params_type create_fri_params(
-        std::size_t degree_log, const int max_step = 1, std::size_t expand_factor = 0) {
+        std::size_t degree_log, const int max_step = 1, std::size_t expand_factor = 2) {
     std::size_t r = degree_log - 1;
 
     return typename FRIScheme::params_type(
@@ -537,4 +537,4 @@ int curve_dependent_main(
         }
         return 0;
     }
-}
+}