Program: 152592
Project: 152592
Buggy source:
private static int calcAttackOrSpAttack(BattlePlayer playerAttacker,BattlePlayer playerDefender,Move move,Battle stats){
  Pokemon attacker=playerAttacker.getPokemon();
  Pokemon defender=playerDefender.getPokemon();
  int attack=1;
  int stat=1;
  long sm=1;
  long am=1;
  long im=1;
  if (move.getKind() == MoveKinds.PHYSICAL) {
    stat=attacker.getStat(Stats.ATTACK);
    if (attacker.getStatStageChange(ModdableBattleStats.ATTACK) > 0) {
      sm=(attacker.getStatStageChange(ModdableBattleStats.ATTACK) + 2) / 2;
    }
 else     if (attacker.getStatStageChange(ModdableBattleStats.ATTACK) < 0) {
      sm=2 / (attacker.getStatStageChange(ModdableBattleStats.ATTACK) + 2);
    }
    if (defender.getAbility() == Ability.UNAWARE && attacker.getStatStageChange(ModdableBattleStats.ATTACK) > 0) {
      sm=1;
    }
switch (attacker.getAbility()) {
case PURE_POWER:
case HUGE_POWER:
      am=2;
    break;
case FLOWER_GIFT:
  if (stats.getWeather() == Weather.SUNNY_DAY) {
    am=(long)1.5;
  }
break;
case GUTS:
if (attacker.isAffectedByStatusAilment()) {
am=(long)1.5;
}
break;
case HUSTLE:
am=(long)1.5;
break;
case SLOW_START:
if (attacker.getTurnsInBattle() < 5) {
am=(long)0.5;
}
break;
}
switch (attacker.getHeldItem()) {
case Items.CHOICE_BAND:
im=(long)1.5;
break;
case Items.LIGHT_BALL:
if (attacker.getSpecies().getDexNumber() == 25) {
im=2;
}
break;
case Items.THICK_CLUB:
if (attacker.getSpecies().getDexNumber() == 104 || attacker.getSpecies().getDexNumber() == 105) {
im=2;
}
break;
}
}
 else if (move.getKind() == MoveKinds.SPECIAL) {
stat=attacker.getStat(Stats.SPECIAL_ATTACK);
if (attacker.getStatStageChange(ModdableBattleStats.SPECIAL_ATTACK) > 0) {
sm=(attacker.getStatStageChange(ModdableBattleStats.SPECIAL_ATTACK) + 2) / 2;
}
 else if (attacker.getStatStageChange(ModdableBattleStats.SPECIAL_ATTACK) < 0) {
sm=2 / (attacker.getStatStageChange(ModdableBattleStats.SPECIAL_ATTACK) + 2);
}
if (defender.getAbility() == Ability.UNAWARE && attacker.getStatStageChange(ModdableBattleStats.SPECIAL_ATTACK) > 0) {
sm=1;
}
switch (attacker.getAbility()) {
case SOLAR_POWER:
if (stats.getWeather() == Weather.SUNNY_DAY) {
am=(long)1.5;
}
}
switch (attacker.getHeldItem()) {
case Items.CHOICE_SPECS:
im=(long)1.5;
break;
case Items.LIGHT_BALL:
if (attacker.getSpecies().getDexNumber() == 25) {
im=2;
}
break;
case Items.SOUL_DEW:
if (attacker.getSpecies().getDexNumber() == 380 || attacker.getSpecies().getDexNumber() == 381) {
im=(long)1.5;
}
break;
case Items.DEEPSEATOOTH:
if (attacker.getSpecies().getDexNumber() == 366) {
im=2;
}
break;
}
}
attack=(int)(stat * sm * am* im);
return attack;
}

Fixed version (ground truth):
private static int calcAttackOrSpAttack(BattlePlayer playerAttacker,BattlePlayer playerDefender,Move move,Battle stats){
  Pokemon attacker=playerAttacker.getPokemon();
  Pokemon defender=playerDefender.getPokemon();
  int attack=1;
  int stat=1;
  long sm=1;
  long am=1;
  long im=1;
  if (move.getKind() == MoveKinds.PHYSICAL) {
    stat=attacker.getStat(Stats.ATTACK);
    if (attacker.getStatStageChange(ModdableBattleStats.ATTACK) > 0) {
      sm=(attacker.getStatStageChange(ModdableBattleStats.ATTACK) + 2) / 2;
    }
 else     if (attacker.getStatStageChange(ModdableBattleStats.ATTACK) < 0) {
      sm=2 / (attacker.getStatStageChange(ModdableBattleStats.ATTACK) + 2);
    }
    if (defender.getBattleAbility() == Ability.UNAWARE && attacker.getStatStageChange(ModdableBattleStats.ATTACK) > 0) {
      sm=1;
    }
switch (attacker.getBattleAbility()) {
case PURE_POWER:
case HUGE_POWER:
      am=2;
    break;
case FLOWER_GIFT:
  if (stats.getWeather() == Weather.SUNNY_DAY) {
    am=(long)1.5;
  }
break;
case GUTS:
if (attacker.isAffectedByStatusAilment()) {
am=(long)1.5;
}
break;
case HUSTLE:
am=(long)1.5;
break;
case SLOW_START:
if (attacker.getTurnsInBattle() < 5) {
am=(long)0.5;
}
break;
}
switch (attacker.getHeldItem()) {
case Items.CHOICE_BAND:
im=(long)1.5;
break;
case Items.LIGHT_BALL:
if (attacker.getSpecies().getDexNumber() == 25) {
im=2;
}
break;
case Items.THICK_CLUB:
if (attacker.getSpecies().getDexNumber() == 104 || attacker.getSpecies().getDexNumber() == 105) {
im=2;
}
break;
}
}
 else if (move.getKind() == MoveKinds.SPECIAL) {
stat=attacker.getStat(Stats.SPECIAL_ATTACK);
if (attacker.getStatStageChange(ModdableBattleStats.SPECIAL_ATTACK) > 0) {
sm=(attacker.getStatStageChange(ModdableBattleStats.SPECIAL_ATTACK) + 2) / 2;
}
 else if (attacker.getStatStageChange(ModdableBattleStats.SPECIAL_ATTACK) < 0) {
sm=2 / (attacker.getStatStageChange(ModdableBattleStats.SPECIAL_ATTACK) + 2);
}
if (defender.hasAbility(Ability.UNAWARE) && attacker.getStatStageChange(ModdableBattleStats.SPECIAL_ATTACK) > 0) {
sm=1;
}
switch (attacker.getBattleAbility()) {
case SOLAR_POWER:
if (stats.getWeather() == Weather.SUNNY_DAY) {
am=(long)1.5;
}
}
switch (attacker.getHeldItem()) {
case Items.CHOICE_SPECS:
im=(long)1.5;
break;
case Items.LIGHT_BALL:
if (attacker.getSpecies().getDexNumber() == 25) {
im=2;
}
break;
case Items.SOUL_DEW:
if (attacker.getSpecies().getDexNumber() == 380 || attacker.getSpecies().getDexNumber() == 381) {
im=(long)1.5;
}
break;
case Items.DEEPSEATOOTH:
if (attacker.getSpecies().getDexNumber() == 366) {
im=2;
}
break;
}
}
attack=(int)(stat * sm * am* im);
return attack;
}