diff --git a/generation.c b/generation.c
index 5326cea..4a8c0c9 100644
--- a/generation.c
+++ b/generation.c
@@ -4,6 +4,7 @@
 #include <stdlib.h>
 #include <string.h>
 #include <sys/mman.h>
+#include <unistd.h>
 
 int reproduce(unsigned char *pic_address, int pic_size)
 {
@@ -14,8 +15,6 @@ int reproduce(unsigned char *pic_address, int pic_size)
         printf("%02X", pic_address[iter]);
     }
 
-    printf("\n");
-
     return_value = 1;
 CLONE_CLEANUP:
     if (NULL != pic_address)
@@ -113,13 +112,18 @@ int main(int argc, const char **argv)
     char *hex_string = argv[1];
     int rand_offset = atoi(argv[2]);
     char rand_flip = atoi(argv[3]);
-
+    pid_t process_id;
     int return_value = 0;
 
-    return_value = generation(hex_string, rand_offset, rand_flip);
-    if (!return_value)
+    process_id = fork();
+
+    if(0 == process_id)
     {
-        exit(1);
+        return_value = generation(hex_string, rand_offset, rand_flip);
+        if (return_value)
+        {
+            exit(1);
+        }
     }
 
     return 0;
diff --git a/run.py b/run.py
index 4a260cf..34ff696 100644
--- a/run.py
+++ b/run.py
@@ -4,13 +4,15 @@ import logging
 import os
 import shutil
 import subprocess
+import binascii
+import random
 
 
 class Sins():
     logger = logging.getLogger()
 
     def __init__(self, parent, seed=None, run_dir=None):
-        self.logger.info('execute\n    {}'.format((
+        self.logger.info('run: {}'.format((
             (parent, seed, run_dir))
         ))
 
@@ -34,17 +36,26 @@ class Sins():
         self.logger.info('parsed\n    {}'.format((parsed)))
 
         paths = (self.seed)
-        children = 0
         while True:
             for path in paths:
                 scrap_path = os.path.join(self.run_dir, path)
                 if os.path.isfile(scrap_path):
-                    children += self.execute(
+                    with open(scrap_path, 'rb') as scrap_file:
+                        scrap_bin = scrap_file.read()
+
+                    scrap_hex = binascii.b2a_hex(scrap_bin).upper()
+
+                    child = self.generation(
                         self.parent,
-                        scrap_path,
+                        scrap_hex,
+                        str(random.randint(0, len(scrap_hex))),
+                        str(random.randint(0, 255)),
                         self.run_dir
                     )
-                self.logger.info('"children": "{}",'.format(children))
+
+                    if child:
+                        raise Exception(child)
+
             paths = sorted(os.listdir(self.run_dir))
 
     def scrap_recent(self, run_dir):
@@ -55,11 +66,18 @@ class Sins():
 
         return None
 
-    def execute(self, parent, scrap, cwd):
-        self.logger.debug('execute\n    {}'.format(((parent, scrap, cwd))))
-        proc = subprocess.run([parent, scrap], cwd=cwd, stdout=subprocess.PIPE)
+    def generation(self, parent, scrap, offset, flip, cwd):
+        self.logger.debug(
+            'generation: {}'.format((parent, scrap, offset, flip, cwd))
+        )
+
+        proc = subprocess.run(
+            [parent, scrap, offset, flip],
+            cwd=cwd,
+            stdout=subprocess.PIPE
+        )
         children = proc.stdout
-        return int(children)
+        return children
 
 
 def hex_dumps(scrap_dir):
@@ -97,9 +115,9 @@ if __name__ == '__main__':
     parser.add_argument('-provision', action='store_true',
                         help='provision ubuntu for run, exit.')
     parser.add_argument('-logfile', help='log to file.')
-    parser.add_argument('-seed', default='build/scrap.asm.2.o',
+    parser.add_argument('-seed', default='build/seed.asm.2.o',
                         help='path to PIC image.')
-    parser.add_argument('-parent', default='build/sins',
+    parser.add_argument('-parent', default='build/generation',
                         help='path to parent process.')
     parser.add_argument('-dir', default='sandbox',
                         help='path to execution directory.')