Add RERS benchmark

* benchs/RERS/2016-Problem10.go,
benchs/RERS/2016-Problem11.go,
benchs/RERS/2016-Problem12.go,
benchs/RERS/2016-Problem14.go,
benchs/RERS/2016-Problem15.go,
benchs/RERS/2017-Problem10.go,
benchs/RERS/2017-Problem11.go,
benchs/RERS/2017-Problem12.go,
benchs/RERS/2017-Problem14.go,
benchs/RERS/2017-Problem15.go,
benchs/RERS/2018-Problem10.go,
benchs/RERS/2018-Problem11.go,
benchs/RERS/2019-Problem11.go,
benchs/RERS/2019-Problem12.go,
benchs/RERS/2019-Problem14.go,
benchs/RERS/2019-Problem15.go,
benchs/RERS/rers2go.sh,
benchs/run-benchmark.sh: Here.

benchs/RERS/rers2go.sh

+#! /bin/bash
+# 1er  arg : file.c
+# Script dedicated to work on RERS challenge. Takes a C file in
+# parameter and convert it into a go program that can then be processed
+# by the Go2Pins tool.
+
+filename=$(basename -- "$1")
+filename="${filename%.*}"
+
+echo Converting $filename
+
+cat $1 | sed 's/#include <stdio.h>//g'                                          | \
+    sed 's/#include <assert.h>//g'                                              | \
+    sed 's/#include <math.h>//g'                                                | \
+    sed 's/#include <stdlib.h>//g'                                              | \
+    sed 's/extern void __VERIFIER_error(int);/void __VERIFIER_error(int n){}/g' | \
+    sed 's/int input;/int __RERS__;/g' | sed 's/(input !=/(__RERS__ !=/g'       | \
+    sed 's/calculate_output(input);/calculate_output(__RERS__);/g'              | \
+    sed "s/scanf(\"%d\", &input);/__RERS__ = __RERS__ + 1;/g"                   | \
+    sed "s/return -2;/break;/g"| sed "s#fprintf#;//fprintf#g"                   | \
+    sed "s#printf#;//printf#g">/tmp/$filename.c
+
+# Requires C to Go transpiler https://github.com/Konstantin8105/c4go
+./c4go transpile /tmp/$filename.c
+
+# This last step is mandatory to handle the tranduction of the C instruction
+# "a ? b : c" which is translated using closure.
+sed -i 's/int32/int/g' $filename.go
+

benchs/run-benchmark.sh

+# /bin/zsh
+# This script runs the benchmark as presented in the paper
+
+# Files from RERSchallenge, category "Sequential Reachability Problems"
+# Note that we exclude from this benchmark all files that fall in the
+# category "Sequential Reachability Problems/data structures, hard" since
+# they require complex array manipulation that are not yet supported by
+# the Go2Pins tool.
+FILES="RERS/2016-Problem10.go \
+       RERS/2016-Problem11.go \
+       RERS/2016-Problem12.go \
+       RERS/2016-Problem14.go \
+       RERS/2016-Problem15.go \
+       RERS/2017-Problem10.go \
+       RERS/2017-Problem11.go \
+       RERS/2017-Problem12.go \
+       RERS/2017-Problem14.go \
+       RERS/2017-Problem15.go \
+       RERS/2018-Problem10.go \
+       RERS/2018-Problem11.go \
+       RERS/2019-Problem11.go \
+       RERS/2019-Problem12.go \
+       RERS/2019-Problem14.go \
+       RERS/2019-Problem15.go "
+
+OUTPUT=benchs.csv
+
+echo "#filename,loc,transpile_time,compile_time,total_time,final_num_var,final_loc" > $OUTPUT
+
+for model in $FILES; do
+    echo "==> Processing $model"
+    loc=$(wc -l $model| awk '{print $1}')
+    echo "   - Line of code (original file):\t$loc"
+    filename=$(basename -- "$model")
+    filename="${filename%.*}"
+
+    rers_inputs=$(cat $model | grep 'var inputs \[\]int'          | \
+			 sed 's/var inputs \[\]int = \[\]int{//g' | \
+			 sed 's/}//g' | sed 's/ *//g' | sed 's/,/;/g')
+
+    start=$(date +%s.%N)
+    ../go2pins -f -o $filename -rers "$rers_inputs" $model > /dev/null 2>&1
+    end=$(date +%s.%N)
+    transpile_time=$(python -c "print ('%.3f' %  (${end} - ${start}))")
+    echo "   - Go2Pins processing:\t\t$transpile_time seconds"
+
+    start=$(date +%s.%N)
+    make -C $filename > /dev/null 2>&1
+    end=$(date +%s.%N)
+    compile_time=$(python -c "print ('%.3f' %  (${end} - ${start}))")
+    echo "   - Compiling output:\t\t\t$compile_time seconds"
+
+    total_time=`echo "$compile_time + $transpile_time"| bc`
+    echo "   - Total Time:\t\t\t$total_time seconds"
+
+
+    final_num_var=$($filename/main --displaylist | grep '\-' | wc -l)
+    echo "   - Number of variables:\t\t$final_num_var"
+
+    loc2=$(wc -l $filename/$filename.go| tail -n1|awk '{print $1}')
+    echo "   - Line of code generated:\t\t$loc2"
+    echo
+    echo "$filename,$loc,$transpile_time,$compile_time,$total_time,$final_num_var,$loc2" >> benchs.csv
+done
+
+echo file : $OUTPUT contains the CSV of all previous values