AnimationGroup崩溃

Question

演示：

__block NSMutableArray *animaArr = [[NSMutableArray alloc] initWithCapacity:200];

for ( int i = 3 ; i > 0 ; i-- ) {
        CAKeyframeAnimation *anima1 = [CAKeyframeAnimation animationWithKeyPath:@"position"];
        NSValue *value0 = [NSValue valueWithCGPoint:CGPointMake(30,40)];
        NSValue *value1 = [NSValue valueWithCGPoint:CGPointMake(50,60)];
        anima1.values = [NSArray arrayWithObjects:value0,value1, nil];
        [animaArr addObject:anima1.values];
    }  

CAAnimationGroup *groupAnimation = [CAAnimationGroup animation];
groupAnimation.animations = animaArr;
groupAnimation.duration = 5;
[_movingChipImgView.layer addAnimation:groupAnimation forKey:nil];

崩溃信息：

  

2016-12-20 20：16：09.876 Pok [1781：474428] - [__ NSArrayI setDefaultDuration：]：无法识别的选择器发送到实例0x60000022d9e0