Arduino - Serial.println() Weird Problem

#define PIN_DICE        A5
#define PIN_RANDOM_SEED A0

int     numberDice                  = 0;
bool    numberDiceNew               = false;
int     counterDice                 = 0;
int     counterDiceThreshold        = 10;
bool    counterInitialTrigger       = false;
int     counterInitialDuration      = 1000;
int     counterInitialDurationMax   = 1000;
int     statePin                    = 0;
int     statePinPrevious            = 0;

void setup(){
    Serial.begin    (9600);
    pinMode         (A5, INPUT);
}

void loop(){
    //POINT OF INTEREST 1.
    Serial.println("PUT ANY STRING HERE!");
    randomSeed(analogRead(PIN_RANDOM_SEED));
    int analogPinValue              = analogRead(PIN_DICE);
    if(analogPinValue               > 511)          { statePin = 1; }
    else if(analogPinValue          <= 511)         { statePin = 0; }
    if(statePinPrevious             != statePin)    { counterInitialTrigger = true; }
    if(counterInitialTrigger){
        if(statePinPrevious         != statePin)    { counterDice ++; }
        counterInitialDuration      --;
    }
    if(counterDice                  >= counterDiceThreshold){
        numberDice                  = random(1, 21);
        numberDiceNew               = true;
        counterDice                 = 0;
        counterInitialDuration      = counterInitialDurationMax;
        counterInitialTrigger       = false;
    }
    if(counterInitialDuration       <= 0){
        counterDice                 = 0;
        counterInitialDuration      = counterInitialDurationMax;
        counterInitialTrigger       = false;
    }
    statePinPrevious                = statePin;
    if(numberDiceNew){
        //POINT OF INTEREST 2.
        Serial.println              (numberDice);
        numberDiceNew               = false;
    }
}