diff --git a/src/generated.h b/src/generated.h
index d6fb5b4b4..111a64bf9 100644
--- a/src/generated.h
+++ b/src/generated.h
@@ -16,115 +16,20 @@
 #include "globals.h"
 
 static const char* generated_source = ""
-"var tmp, a, b = 1, c = 2, d, e = 3, g = 4;\n"
+"var count = 10000;\n"
+"var x = 7;\n"
+"var y = 3;\n"
 "\n"
-"var count = 1000;\n"
+"var tmp1;\n"
+"var tmp2;\n"
+"var tmp3;\n"
+"var tmp4;\n"
 "\n"
-"tmp = b * c;\n"
-"a = tmp + g;\n"
-"d = tmp * e + a;\n"
-"\n"
-"var waitTime = 50;\n"
-"var numOfIterations = 10;\n"
-"\n"
-"while (1)\n"
+"for (var i = 0; i < count; i++)\n"
 "{\n"
-"for (var j = 0; j < numOfIterations; j += 1)\n"
-"{\n"
-"LEDOn(12);\n"
-"LEDOn(13);\n"
-"LEDOn(14);\n"
-"LEDOn(15);\n"
-"wait(waitTime * 2);\n"
-"LEDOff(12);\n"
-"LEDOff(13);\n"
-"LEDOff(14);\n"
-"LEDOff(15);\n"
-"wait(waitTime * 2);\n"
-"}\n"
-"\n"
-"for (var j = 0; j < numOfIterations; j += 1)\n"
-"{\n"
-"LEDOn(12);\n"
-"wait(waitTime);\n"
-"LEDOff(12);\n"
-"wait(waitTime);\n"
-"LEDOn(13);\n"
-"wait(waitTime);\n"
-"LEDOff(13);\n"
-"wait(waitTime);\n"
-"LEDOn(14);\n"
-"wait(waitTime);\n"
-"LEDOff(14);\n"
-"wait(waitTime);\n"
-"LEDOn(15);\n"
-"wait(waitTime);\n"
-"LEDOff(15);\n"
-"wait(waitTime);\n"
-"}\n"
-"\n"
-"for (var j = 0; j < numOfIterations; j += 1)\n"
-"{\n"
-"LEDOn(12);\n"
-"wait(waitTime);\n"
-"LEDOff(12);\n"
-"LEDOn(13);\n"
-"wait(waitTime);\n"
-"LEDOff(13);\n"
-"LEDOn(14);\n"
-"wait(waitTime);\n"
-"LEDOff(14);\n"
-"LEDOn(15);\n"
-"wait(waitTime);\n"
-"LEDOff(15);\n"
-"}\n"
-"\n"
-"for (var j = 0; j < numOfIterations; j += 1)\n"
-"{\n"
-"LEDOn(12);\n"
-"wait(waitTime / 2);\n"
-"LEDOff(12);\n"
-"LEDOn(13);\n"
-"wait(waitTime / 2);\n"
-"LEDOff(13);\n"
-"LEDOn(14);\n"
-"wait(waitTime / 2);\n"
-"LEDOff(14);\n"
-"LEDOn(15);\n"
-"wait(waitTime / 2);\n"
-"LEDOff(15);\n"
-"}\n"
-"\n"
-"for (var j = 0; j < numOfIterations; j += 1)\n"
-"{\n"
-"LEDOn(12);\n"
-"wait(waitTime / 3);\n"
-"LEDOff(12);\n"
-"LEDOn(13);\n"
-"wait(waitTime / 3);\n"
-"LEDOff(13);\n"
-"LEDOn(14);\n"
-"wait(waitTime / 3);\n"
-"LEDOff(14);\n"
-"LEDOn(15);\n"
-"wait(waitTime / 3);\n"
-"LEDOff(15);\n"
-"}\n"
-"\n"
-"for (var j = 0; j < numOfIterations; j += 1)\n"
-"{\n"
-"LEDOn(12);\n"
-"wait(waitTime / 6);\n"
-"LEDOff(12);\n"
-"LEDOn(13);\n"
-"wait(waitTime / 6);\n"
-"LEDOff(13);\n"
-"LEDOn(14);\n"
-"wait(waitTime / 6);\n"
-"LEDOff(14);\n"
-"LEDOn(15);\n"
-"wait(waitTime / 6);\n"
-"LEDOff(15);\n"
-"}\n"
+"tmp1 = x * x;\n"
+"tmp2 = y * y;\n"
+"tmp3 = tmp1 * tmp1;\n"
+"tmp4 = tmp2 * tmp2;\n"
 "}\n"
 ;
diff --git a/src/main.c b/src/main.c
index 78d87ef17..ad96524d5 100644
--- a/src/main.c
+++ b/src/main.c
@@ -85,7 +85,6 @@ jerry_run (const char *script_source, size_t script_source_size, bool is_parse_o
     }
 
   init_int (opcodes);
-  run_int ();
 } /* jerry_run */
 
 #ifdef __HOST
@@ -185,17 +184,35 @@ main (int argc __unused,
 #endif
 
 #ifdef __TARGET_MCU
-int
-main(void)
-{
-  initialize_sys_tick();
-  initialize_leds();
-  initialize_timer();
-  
-  const char *source_p = generated_source;
-  const size_t source_size = sizeof(generated_source);
+static uint32_t start;
+static uint32_t finish_native_ms;
+static uint32_t finish_parse_ms;
+static uint32_t finish_int_ms;
 
-  jerry_run( source_p,
+int
+main (void)
+{
+  initialize_sys_tick ();
+  initialize_leds ();
+  initialize_timer ();
+
+  led_on (13);
+
+  const char *source_p = generated_source;
+  const size_t source_size = sizeof (generated_source);
+
+  set_sys_tick_counter ((uint32_t) - 1);
+  start = get_sys_tick_counter ();
+  jerry_run (source_p,
              source_size, false);
+  finish_parse_ms = (start - get_sys_tick_counter ()) / 1000;
+  led_on (14);
+
+  set_sys_tick_counter ((uint32_t) - 1);
+  start = get_sys_tick_counter ();
+  run_int ();
+  finish_int_ms = (start - get_sys_tick_counter ()) / 1000;
+
+  led_on (15);
 }
 #endif