41.735 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.022 * * * [progress]: [2/2] Setting up program.
0.028 * [progress]: [Phase 2 of 3] Improving.
0.028 * [simplify]: Simplifying:
  (+ x (/ (- y x) 2.0))
0.028 * * [simplify]: iteration 0: 6 enodes
0.031 * * [simplify]: iteration 1: 12 enodes
0.035 * * [simplify]: iteration 2: 19 enodes
0.042 * * [simplify]: iteration 3: 28 enodes
0.052 * * [simplify]: iteration 4: 38 enodes
0.071 * * [simplify]: iteration 5: 54 enodes
0.090 * * [simplify]: iteration 6: 93 enodes
0.113 * * [simplify]: iteration 7: 141 enodes
0.145 * * [simplify]: iteration 8: 182 enodes
0.179 * * [simplify]: iteration 9: 240 enodes
0.252 * * [simplify]: iteration 10: 281 enodes
0.296 * * [simplify]: iteration 11: 327 enodes
0.345 * * [simplify]: iteration 12: 367 enodes
0.402 * * [simplify]: iteration 13: 427 enodes
0.448 * * [simplify]: iteration 14: 452 enodes
0.482 * * [simplify]: iteration 15: 488 enodes
0.527 * * [simplify]: iteration 16: 512 enodes
0.563 * * [simplify]: iteration 17: 551 enodes
0.607 * * [simplify]: iteration 18: 575 enodes
0.639 * * [simplify]: iteration 19: 610 enodes
0.683 * * [simplify]: iteration 20: 638 enodes
0.715 * * [simplify]: iteration 21: 669 enodes
0.759 * * [simplify]: iteration 22: 697 enodes
0.798 * * [simplify]: iteration 23: 736 enodes
0.842 * * [simplify]: iteration 24: 760 enodes
0.879 * * [simplify]: iteration 25: 799 enodes
0.927 * * [simplify]: iteration 26: 825 enodes
0.964 * * [simplify]: iteration 27: 860 enodes
1.006 * * [simplify]: iteration 28: 884 enodes
1.040 * * [simplify]: iteration 29: 919 enodes
1.076 * * [simplify]: iteration 30: 945 enodes
1.111 * * [simplify]: iteration 31: 980 enodes
1.149 * * [simplify]: iteration 32: 1008 enodes
1.177 * * [simplify]: iteration 33: 1039 enodes
1.213 * * [simplify]: iteration 34: 1063 enodes
1.251 * * [simplify]: iteration 35: 1106 enodes
1.288 * * [simplify]: iteration 36: 1130 enodes
1.320 * * [simplify]: iteration 37: 1165 enodes
1.357 * * [simplify]: iteration 38: 1189 enodes
1.395 * * [simplify]: iteration 39: 1228 enodes
1.434 * * [simplify]: iteration 40: 1256 enodes
1.465 * * [simplify]: iteration 41: 1287 enodes
1.503 * * [simplify]: iteration 42: 1311 enodes
1.543 * * [simplify]: iteration 43: 1354 enodes
1.583 * * [simplify]: iteration 44: 1378 enodes
1.618 * * [simplify]: iteration 45: 1417 enodes
1.660 * * [simplify]: iteration 46: 1445 enodes
1.691 * * [simplify]: iteration 47: 1476 enodes
1.729 * * [simplify]: iteration 48: 1502 enodes
1.766 * * [simplify]: iteration 49: 1545 enodes
1.808 * * [simplify]: iteration 50: 1569 enodes
1.842 * * [simplify]: iteration 51: 1608 enodes
1.882 * * [simplify]: iteration 52: 1636 enodes
1.913 * * [simplify]: iteration 53: 1667 enodes
1.955 * * [simplify]: iteration 54: 1693 enodes
1.991 * * [simplify]: iteration 55: 1736 enodes
2.029 * * [simplify]: iteration 56: 1760 enodes
2.068 * * [simplify]: iteration 57: 1795 enodes
2.109 * * [simplify]: iteration 58: 1821 enodes
2.143 * * [simplify]: iteration 59: 1860 enodes
2.178 * * [simplify]: iteration 60: 1888 enodes
2.208 * * [simplify]: iteration 61: 1919 enodes
2.241 * * [simplify]: iteration 62: 1947 enodes
2.274 * * [simplify]: iteration 63: 1986 enodes
2.312 * * [simplify]: iteration 64: 2010 enodes
2.351 * * [simplify]: iteration 65: 2049 enodes
2.388 * * [simplify]: iteration 66: 2075 enodes
2.420 * * [simplify]: iteration 67: 2110 enodes
2.462 * * [simplify]: iteration 68: 2138 enodes
2.494 * * [simplify]: iteration 69: 2169 enodes
2.532 * * [simplify]: iteration 70: 2197 enodes
2.570 * * [simplify]: iteration 71: 2236 enodes
2.615 * * [simplify]: iteration 72: 2260 enodes
2.650 * * [simplify]: iteration 73: 2299 enodes
2.695 * * [simplify]: iteration 74: 2327 enodes
2.727 * * [simplify]: iteration 75: 2358 enodes
2.772 * * [simplify]: iteration 76: 2386 enodes
2.809 * * [simplify]: iteration 77: 2425 enodes
2.851 * * [simplify]: iteration 78: 2449 enodes
2.887 * * [simplify]: iteration 79: 2488 enodes
2.929 * * [simplify]: iteration 80: 2514 enodes
2.959 * * [simplify]: iteration 81: 2549 enodes
2.998 * * [simplify]: iteration 82: 2575 enodes
3.027 * * [simplify]: iteration 83: 2610 enodes
3.071 * * [simplify]: iteration 84: 2638 enodes
3.111 * * [simplify]: iteration 85: 2669 enodes
3.153 * * [simplify]: iteration 86: 2697 enodes
3.192 * * [simplify]: iteration 87: 2736 enodes
3.232 * * [simplify]: iteration 88: 2760 enodes
3.267 * * [simplify]: iteration 89: 2799 enodes
3.321 * * [simplify]: iteration 90: 2825 enodes
3.357 * * [simplify]: iteration 91: 2860 enodes
3.392 * * [simplify]: iteration 92: 2888 enodes
3.419 * * [simplify]: iteration 93: 2919 enodes
3.456 * * [simplify]: iteration 94: 2945 enodes
3.497 * * [simplify]: iteration 95: 2988 enodes
3.539 * * [simplify]: iteration 96: 3012 enodes
3.574 * * [simplify]: iteration 97: 3047 enodes
3.618 * * [simplify]: iteration 98: 3073 enodes
3.653 * * [simplify]: iteration 99: 3112 enodes
3.692 * * [simplify]: iteration 100: 3138 enodes
3.724 * * [simplify]: iteration 101: 3173 enodes
3.766 * * [simplify]: iteration 102: 3201 enodes
3.799 * * [simplify]: iteration 103: 3232 enodes
3.837 * * [simplify]: iteration 104: 3260 enodes
3.873 * * [simplify]: iteration 105: 3299 enodes
3.916 * * [simplify]: iteration 106: 3323 enodes
3.951 * * [simplify]: iteration 107: 3362 enodes
3.990 * * [simplify]: iteration 108: 3388 enodes
4.022 * * [simplify]: iteration 109: 3423 enodes
4.065 * * [simplify]: iteration 110: 3451 enodes
4.093 * * [simplify]: iteration 111: 3482 enodes
4.131 * * [simplify]: iteration 112: 3508 enodes
4.170 * * [simplify]: iteration 113: 3551 enodes
4.208 * * [simplify]: iteration 114: 3575 enodes
4.242 * * [simplify]: iteration 115: 3610 enodes
4.279 * * [simplify]: iteration 116: 3634 enodes
4.317 * * [simplify]: iteration 117: 3673 enodes
4.353 * * [simplify]: iteration 118: 3699 enodes
4.383 * * [simplify]: iteration 119: 3734 enodes
4.414 * * [simplify]: iteration 120: 3758 enodes
4.450 * * [simplify]: iteration 121: 3793 enodes
4.490 * * [simplify]: iteration 122: 3819 enodes
4.523 * * [simplify]: iteration 123: 3854 enodes
4.562 * * [simplify]: iteration 124: 3880 enodes
4.596 * * [simplify]: iteration 125: 3915 enodes
4.636 * * [simplify]: iteration 126: 3943 enodes
4.657 * * [simplify]: iteration 127: 3974 enodes
4.696 * * [simplify]: iteration 128: 4000 enodes
4.734 * * [simplify]: iteration 129: 4043 enodes
4.773 * * [simplify]: iteration 130: 4067 enodes
4.807 * * [simplify]: iteration 131: 4106 enodes
4.852 * * [simplify]: iteration 132: 4134 enodes
4.885 * * [simplify]: iteration 133: 4165 enodes
4.920 * * [simplify]: iteration 134: 4193 enodes
4.963 * * [simplify]: iteration 135: 4232 enodes
5.009 * * [simplify]: iteration 136: 4256 enodes
5.047 * * [simplify]: iteration 137: 4291 enodes
5.085 * * [simplify]: iteration 138: 4315 enodes
5.121 * * [simplify]: iteration 139: 4354 enodes
5.169 * * [simplify]: iteration 140: 4380 enodes
5.203 * * [simplify]: iteration 141: 4415 enodes
5.244 * * [simplify]: iteration 142: 4443 enodes
5.276 * * [simplify]: iteration 143: 4474 enodes
5.318 * * [simplify]: iteration 144: 4502 enodes
5.352 * * [simplify]: iteration 145: 4541 enodes
5.388 * * [simplify]: iteration 146: 4565 enodes
5.428 * * [simplify]: iteration 147: 4600 enodes
5.470 * * [simplify]: iteration 148: 4626 enodes
5.505 * * [simplify]: iteration 149: 4665 enodes
5.547 * * [simplify]: iteration 150: 4691 enodes
5.582 * * [simplify]: iteration 151: 4726 enodes
5.621 * * [simplify]: iteration 152: 4754 enodes
5.653 * * [simplify]: iteration 153: 4785 enodes
5.708 * * [simplify]: iteration 154: 4809 enodes
5.747 * * [simplify]: iteration 155: 4852 enodes
5.784 * * [simplify]: iteration 156: 4876 enodes
5.820 * * [simplify]: iteration 157: 4915 enodes
5.861 * * [simplify]: iteration 158: 4941 enodes
5.896 * * [simplify]: iteration 159: 4976 enodes
5.940 * * [simplify]: iteration complete: 5000 enodes
5.940 * * [simplify]: Extracting #0: cost 1 inf + 0
5.940 * * [simplify]: Extracting #1: cost 14 inf + 0
5.940 * * [simplify]: Extracting #2: cost 17 inf + 42
5.941 * * [simplify]: Extracting #3: cost 14 inf + 294
5.942 * * [simplify]: Extracting #4: cost 0 inf + 1567
5.943 * * [simplify]: Extracting #5: cost 0 inf + 1527
5.944 * [simplify]: Simplified to:
  (- x (/ (- x y) 2.0))
5.946 * * [progress]: iteration 1 / 4
5.946 * * * [progress]: picking best candidate
5.953 * * * * [pick]: Picked  #<alt (λ (x y) (+ x (/ (- y x) 2.0)))>
5.953 * * * [progress]: localizing error
5.969 * * * [progress]: generating rewritten candidates
5.969 * * * * [progress]: [ 1 / 1 ] rewriting at (2)
6.046 * * * [progress]: generating series expansions
6.047 * * * * [progress]: [ 1 / 1 ] generating series at (2)
6.047 * [backup-simplify]: Simplify (+ x (/ (- y x) 2.0)) into (+ (* 0.5 x) (* 0.5 y))
6.047 * [approximate]: Taking taylor expansion of (+ (* 0.5 x) (* 0.5 y)) in (x y) around 0
6.047 * [taylor]: Taking taylor expansion of (+ (* 0.5 x) (* 0.5 y)) in y
6.047 * [taylor]: Taking taylor expansion of (* 0.5 x) in y
6.047 * [taylor]: Taking taylor expansion of 0.5 in y
6.047 * [backup-simplify]: Simplify 0.5 into 0.5
6.047 * [taylor]: Taking taylor expansion of x in y
6.047 * [backup-simplify]: Simplify x into x
6.047 * [taylor]: Taking taylor expansion of (* 0.5 y) in y
6.047 * [taylor]: Taking taylor expansion of 0.5 in y
6.047 * [backup-simplify]: Simplify 0.5 into 0.5
6.047 * [taylor]: Taking taylor expansion of y in y
6.047 * [backup-simplify]: Simplify 0 into 0
6.047 * [backup-simplify]: Simplify 1 into 1
6.047 * [taylor]: Taking taylor expansion of (+ (* 0.5 x) (* 0.5 y)) in x
6.047 * [taylor]: Taking taylor expansion of (* 0.5 x) in x
6.047 * [taylor]: Taking taylor expansion of 0.5 in x
6.047 * [backup-simplify]: Simplify 0.5 into 0.5
6.047 * [taylor]: Taking taylor expansion of x in x
6.047 * [backup-simplify]: Simplify 0 into 0
6.047 * [backup-simplify]: Simplify 1 into 1
6.047 * [taylor]: Taking taylor expansion of (* 0.5 y) in x
6.047 * [taylor]: Taking taylor expansion of 0.5 in x
6.048 * [backup-simplify]: Simplify 0.5 into 0.5
6.048 * [taylor]: Taking taylor expansion of y in x
6.048 * [backup-simplify]: Simplify y into y
6.048 * [taylor]: Taking taylor expansion of (+ (* 0.5 x) (* 0.5 y)) in x
6.048 * [taylor]: Taking taylor expansion of (* 0.5 x) in x
6.048 * [taylor]: Taking taylor expansion of 0.5 in x
6.048 * [backup-simplify]: Simplify 0.5 into 0.5
6.048 * [taylor]: Taking taylor expansion of x in x
6.048 * [backup-simplify]: Simplify 0 into 0
6.048 * [backup-simplify]: Simplify 1 into 1
6.048 * [taylor]: Taking taylor expansion of (* 0.5 y) in x
6.048 * [taylor]: Taking taylor expansion of 0.5 in x
6.048 * [backup-simplify]: Simplify 0.5 into 0.5
6.048 * [taylor]: Taking taylor expansion of y in x
6.048 * [backup-simplify]: Simplify y into y
6.049 * [backup-simplify]: Simplify (* 0.5 0) into 0
6.049 * [backup-simplify]: Simplify (* 0.5 y) into (* 0.5 y)
6.049 * [backup-simplify]: Simplify (+ 0 (* 0.5 y)) into (* 0.5 y)
6.049 * [taylor]: Taking taylor expansion of (* 0.5 y) in y
6.049 * [taylor]: Taking taylor expansion of 0.5 in y
6.049 * [backup-simplify]: Simplify 0.5 into 0.5
6.049 * [taylor]: Taking taylor expansion of y in y
6.049 * [backup-simplify]: Simplify 0 into 0
6.049 * [backup-simplify]: Simplify 1 into 1
6.050 * [backup-simplify]: Simplify (* 0.5 0) into 0
6.050 * [backup-simplify]: Simplify 0 into 0
6.051 * [backup-simplify]: Simplify (+ (* 0.5 1) (* 0 0)) into 0.5
6.052 * [backup-simplify]: Simplify (+ (* 0.5 0) (* 0 y)) into 0
6.053 * [backup-simplify]: Simplify (+ 0.5 0) into 0.5
6.053 * [taylor]: Taking taylor expansion of 0.5 in y
6.053 * [backup-simplify]: Simplify 0.5 into 0.5
6.053 * [backup-simplify]: Simplify 0.5 into 0.5
6.055 * [backup-simplify]: Simplify (+ (* 0.5 1) (* 0 0)) into 0.5
6.055 * [backup-simplify]: Simplify 0.5 into 0.5
6.056 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 1) (* 0 0))) into 0
6.057 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (* 0 y))) into 0
6.057 * [backup-simplify]: Simplify (+ 0 0) into 0
6.057 * [taylor]: Taking taylor expansion of 0 in y
6.057 * [backup-simplify]: Simplify 0 into 0
6.057 * [backup-simplify]: Simplify 0 into 0
6.057 * [backup-simplify]: Simplify 0 into 0
6.058 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 1) (* 0 0))) into 0
6.058 * [backup-simplify]: Simplify 0 into 0
6.060 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (+ (* 0 1) (* 0 0)))) into 0
6.061 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (+ (* 0 0) (* 0 y)))) into 0
6.061 * [backup-simplify]: Simplify (+ 0 0) into 0
6.062 * [taylor]: Taking taylor expansion of 0 in y
6.062 * [backup-simplify]: Simplify 0 into 0
6.062 * [backup-simplify]: Simplify 0 into 0
6.062 * [backup-simplify]: Simplify 0 into 0
6.062 * [backup-simplify]: Simplify 0 into 0
6.062 * [backup-simplify]: Simplify (+ (* 0.5 (* y 1)) (* 0.5 (* 1 x))) into (+ (* 0.5 x) (* 0.5 y))
6.062 * [backup-simplify]: Simplify (+ (/ 1 x) (/ (- (/ 1 y) (/ 1 x)) 2.0)) into (+ (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x)))
6.062 * [approximate]: Taking taylor expansion of (+ (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x))) in (x y) around 0
6.062 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x))) in y
6.062 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in y
6.062 * [taylor]: Taking taylor expansion of 0.5 in y
6.062 * [backup-simplify]: Simplify 0.5 into 0.5
6.062 * [taylor]: Taking taylor expansion of (/ 1 y) in y
6.062 * [taylor]: Taking taylor expansion of y in y
6.062 * [backup-simplify]: Simplify 0 into 0
6.062 * [backup-simplify]: Simplify 1 into 1
6.063 * [backup-simplify]: Simplify (/ 1 1) into 1
6.063 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in y
6.063 * [taylor]: Taking taylor expansion of 0.5 in y
6.063 * [backup-simplify]: Simplify 0.5 into 0.5
6.063 * [taylor]: Taking taylor expansion of (/ 1 x) in y
6.063 * [taylor]: Taking taylor expansion of x in y
6.063 * [backup-simplify]: Simplify x into x
6.063 * [backup-simplify]: Simplify (/ 1 x) into (/ 1 x)
6.063 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x))) in x
6.063 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in x
6.063 * [taylor]: Taking taylor expansion of 0.5 in x
6.063 * [backup-simplify]: Simplify 0.5 into 0.5
6.063 * [taylor]: Taking taylor expansion of (/ 1 y) in x
6.063 * [taylor]: Taking taylor expansion of y in x
6.063 * [backup-simplify]: Simplify y into y
6.063 * [backup-simplify]: Simplify (/ 1 y) into (/ 1 y)
6.063 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in x
6.063 * [taylor]: Taking taylor expansion of 0.5 in x
6.064 * [backup-simplify]: Simplify 0.5 into 0.5
6.064 * [taylor]: Taking taylor expansion of (/ 1 x) in x
6.064 * [taylor]: Taking taylor expansion of x in x
6.064 * [backup-simplify]: Simplify 0 into 0
6.064 * [backup-simplify]: Simplify 1 into 1
6.064 * [backup-simplify]: Simplify (/ 1 1) into 1
6.064 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x))) in x
6.070 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in x
6.070 * [taylor]: Taking taylor expansion of 0.5 in x
6.070 * [backup-simplify]: Simplify 0.5 into 0.5
6.070 * [taylor]: Taking taylor expansion of (/ 1 y) in x
6.070 * [taylor]: Taking taylor expansion of y in x
6.070 * [backup-simplify]: Simplify y into y
6.070 * [backup-simplify]: Simplify (/ 1 y) into (/ 1 y)
6.070 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in x
6.070 * [taylor]: Taking taylor expansion of 0.5 in x
6.070 * [backup-simplify]: Simplify 0.5 into 0.5
6.070 * [taylor]: Taking taylor expansion of (/ 1 x) in x
6.070 * [taylor]: Taking taylor expansion of x in x
6.070 * [backup-simplify]: Simplify 0 into 0
6.070 * [backup-simplify]: Simplify 1 into 1
6.071 * [backup-simplify]: Simplify (/ 1 1) into 1
6.072 * [backup-simplify]: Simplify (* 0.5 1) into 0.5
6.072 * [backup-simplify]: Simplify (+ 0 0.5) into 0.5
6.072 * [taylor]: Taking taylor expansion of 0.5 in y
6.072 * [backup-simplify]: Simplify 0.5 into 0.5
6.072 * [backup-simplify]: Simplify (* 0.5 (/ 1 y)) into (/ 0.5 y)
6.073 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
6.074 * [backup-simplify]: Simplify (+ (* 0.5 0) (* 0 1)) into 0
6.074 * [backup-simplify]: Simplify (+ (/ 0.5 y) 0) into (* 0.5 (/ 1 y))
6.074 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in y
6.074 * [taylor]: Taking taylor expansion of 0.5 in y
6.074 * [backup-simplify]: Simplify 0.5 into 0.5
6.074 * [taylor]: Taking taylor expansion of (/ 1 y) in y
6.074 * [taylor]: Taking taylor expansion of y in y
6.074 * [backup-simplify]: Simplify 0 into 0
6.074 * [backup-simplify]: Simplify 1 into 1
6.074 * [backup-simplify]: Simplify (/ 1 1) into 1
6.075 * [backup-simplify]: Simplify (* 0.5 1) into 0.5
6.075 * [backup-simplify]: Simplify 0.5 into 0.5
6.075 * [backup-simplify]: Simplify 0.5 into 0.5
6.075 * [backup-simplify]: Simplify (- (+ (* (/ 1 y) (/ 0 y)))) into 0
6.076 * [backup-simplify]: Simplify (+ (* 0.5 0) (* 0 (/ 1 y))) into 0
6.077 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
6.078 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (* 0 1))) into 0
6.078 * [backup-simplify]: Simplify (+ 0 0) into 0
6.078 * [taylor]: Taking taylor expansion of 0 in y
6.078 * [backup-simplify]: Simplify 0 into 0
6.079 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
6.080 * [backup-simplify]: Simplify (+ (* 0.5 0) (* 0 1)) into 0
6.080 * [backup-simplify]: Simplify 0 into 0
6.080 * [backup-simplify]: Simplify 0 into 0
6.080 * [backup-simplify]: Simplify (- (+ (* (/ 1 y) (/ 0 y)) (* 0 (/ 0 y)))) into 0
6.081 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (* 0 (/ 1 y)))) into 0
6.082 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
6.083 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))) into 0
6.083 * [backup-simplify]: Simplify (+ 0 0) into 0
6.083 * [taylor]: Taking taylor expansion of 0 in y
6.084 * [backup-simplify]: Simplify 0 into 0
6.084 * [backup-simplify]: Simplify 0 into 0
6.085 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
6.086 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (* 0 1))) into 0
6.086 * [backup-simplify]: Simplify 0 into 0
6.086 * [backup-simplify]: Simplify 0 into 0
6.086 * [backup-simplify]: Simplify (- (+ (* (/ 1 y) (/ 0 y)) (* 0 (/ 0 y)) (* 0 (/ 0 y)))) into 0
6.087 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (+ (* 0 0) (* 0 (/ 1 y))))) into 0
6.088 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
6.090 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))) into 0
6.090 * [backup-simplify]: Simplify (+ 0 0) into 0
6.090 * [taylor]: Taking taylor expansion of 0 in y
6.090 * [backup-simplify]: Simplify 0 into 0
6.090 * [backup-simplify]: Simplify 0 into 0
6.091 * [backup-simplify]: Simplify (+ (* 0.5 (* 1 (/ 1 (/ 1 x)))) (* 0.5 (* (/ 1 (/ 1 y)) 1))) into (+ (* 0.5 x) (* 0.5 y))
6.091 * [backup-simplify]: Simplify (+ (/ 1 (- x)) (/ (- (/ 1 (- y)) (/ 1 (- x))) 2.0)) into (- (+ (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x))))
6.091 * [approximate]: Taking taylor expansion of (- (+ (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x)))) in (x y) around 0
6.091 * [taylor]: Taking taylor expansion of (- (+ (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x)))) in y
6.091 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x))) in y
6.091 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in y
6.091 * [taylor]: Taking taylor expansion of 0.5 in y
6.091 * [backup-simplify]: Simplify 0.5 into 0.5
6.091 * [taylor]: Taking taylor expansion of (/ 1 y) in y
6.091 * [taylor]: Taking taylor expansion of y in y
6.091 * [backup-simplify]: Simplify 0 into 0
6.091 * [backup-simplify]: Simplify 1 into 1
6.092 * [backup-simplify]: Simplify (/ 1 1) into 1
6.092 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in y
6.092 * [taylor]: Taking taylor expansion of 0.5 in y
6.092 * [backup-simplify]: Simplify 0.5 into 0.5
6.092 * [taylor]: Taking taylor expansion of (/ 1 x) in y
6.092 * [taylor]: Taking taylor expansion of x in y
6.092 * [backup-simplify]: Simplify x into x
6.092 * [backup-simplify]: Simplify (/ 1 x) into (/ 1 x)
6.092 * [taylor]: Taking taylor expansion of (- (+ (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x)))) in x
6.092 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x))) in x
6.092 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in x
6.092 * [taylor]: Taking taylor expansion of 0.5 in x
6.092 * [backup-simplify]: Simplify 0.5 into 0.5
6.092 * [taylor]: Taking taylor expansion of (/ 1 y) in x
6.092 * [taylor]: Taking taylor expansion of y in x
6.092 * [backup-simplify]: Simplify y into y
6.092 * [backup-simplify]: Simplify (/ 1 y) into (/ 1 y)
6.092 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in x
6.092 * [taylor]: Taking taylor expansion of 0.5 in x
6.092 * [backup-simplify]: Simplify 0.5 into 0.5
6.092 * [taylor]: Taking taylor expansion of (/ 1 x) in x
6.092 * [taylor]: Taking taylor expansion of x in x
6.093 * [backup-simplify]: Simplify 0 into 0
6.093 * [backup-simplify]: Simplify 1 into 1
6.093 * [backup-simplify]: Simplify (/ 1 1) into 1
6.093 * [taylor]: Taking taylor expansion of (- (+ (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x)))) in x
6.093 * [taylor]: Taking taylor expansion of (+ (* 0.5 (/ 1 y)) (* 0.5 (/ 1 x))) in x
6.093 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in x
6.093 * [taylor]: Taking taylor expansion of 0.5 in x
6.093 * [backup-simplify]: Simplify 0.5 into 0.5
6.093 * [taylor]: Taking taylor expansion of (/ 1 y) in x
6.093 * [taylor]: Taking taylor expansion of y in x
6.093 * [backup-simplify]: Simplify y into y
6.093 * [backup-simplify]: Simplify (/ 1 y) into (/ 1 y)
6.093 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 x)) in x
6.093 * [taylor]: Taking taylor expansion of 0.5 in x
6.093 * [backup-simplify]: Simplify 0.5 into 0.5
6.093 * [taylor]: Taking taylor expansion of (/ 1 x) in x
6.094 * [taylor]: Taking taylor expansion of x in x
6.094 * [backup-simplify]: Simplify 0 into 0
6.094 * [backup-simplify]: Simplify 1 into 1
6.094 * [backup-simplify]: Simplify (/ 1 1) into 1
6.095 * [backup-simplify]: Simplify (* 0.5 1) into 0.5
6.095 * [backup-simplify]: Simplify (+ 0 0.5) into 0.5
6.095 * [backup-simplify]: Simplify (- 0.5) into (- 0.5)
6.095 * [taylor]: Taking taylor expansion of (- 0.5) in y
6.095 * [taylor]: Taking taylor expansion of 0.5 in y
6.095 * [backup-simplify]: Simplify 0.5 into 0.5
6.096 * [backup-simplify]: Simplify (* 0.5 (/ 1 y)) into (/ 0.5 y)
6.096 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
6.097 * [backup-simplify]: Simplify (+ (* 0.5 0) (* 0 1)) into 0
6.097 * [backup-simplify]: Simplify (+ (/ 0.5 y) 0) into (* 0.5 (/ 1 y))
6.097 * [backup-simplify]: Simplify (- (* 0.5 (/ 1 y))) into (- (* 0.5 (/ 1 y)))
6.097 * [taylor]: Taking taylor expansion of (- (* 0.5 (/ 1 y))) in y
6.097 * [taylor]: Taking taylor expansion of (* 0.5 (/ 1 y)) in y
6.098 * [taylor]: Taking taylor expansion of 0.5 in y
6.098 * [backup-simplify]: Simplify 0.5 into 0.5
6.098 * [taylor]: Taking taylor expansion of (/ 1 y) in y
6.098 * [taylor]: Taking taylor expansion of y in y
6.098 * [backup-simplify]: Simplify 0 into 0
6.098 * [backup-simplify]: Simplify 1 into 1
6.098 * [backup-simplify]: Simplify (/ 1 1) into 1
6.099 * [backup-simplify]: Simplify (* 0.5 1) into 0.5
6.099 * [backup-simplify]: Simplify (- 0.5) into (- 0.5)
6.100 * [backup-simplify]: Simplify (- 0.5) into (- 0.5)
6.100 * [backup-simplify]: Simplify (- 0.5) into (- 0.5)
6.101 * [backup-simplify]: Simplify (- 0.5) into (- 0.5)
6.101 * [backup-simplify]: Simplify (- (+ (* (/ 1 y) (/ 0 y)))) into 0
6.101 * [backup-simplify]: Simplify (+ (* 0.5 0) (* 0 (/ 1 y))) into 0
6.102 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
6.103 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (* 0 1))) into 0
6.104 * [backup-simplify]: Simplify (+ 0 0) into 0
6.104 * [backup-simplify]: Simplify (- 0) into 0
6.104 * [taylor]: Taking taylor expansion of 0 in y
6.104 * [backup-simplify]: Simplify 0 into 0
6.105 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)))) into 0
6.106 * [backup-simplify]: Simplify (+ (* 0.5 0) (* 0 1)) into 0
6.106 * [backup-simplify]: Simplify (- 0) into 0
6.106 * [backup-simplify]: Simplify 0 into 0
6.106 * [backup-simplify]: Simplify (- 0) into 0
6.106 * [backup-simplify]: Simplify 0 into 0
6.107 * [backup-simplify]: Simplify (- (+ (* (/ 1 y) (/ 0 y)) (* 0 (/ 0 y)))) into 0
6.108 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (* 0 (/ 1 y)))) into 0
6.109 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
6.110 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (+ (* 0 0) (* 0 1)))) into 0
6.111 * [backup-simplify]: Simplify (+ 0 0) into 0
6.111 * [backup-simplify]: Simplify (- 0) into 0
6.111 * [taylor]: Taking taylor expansion of 0 in y
6.111 * [backup-simplify]: Simplify 0 into 0
6.111 * [backup-simplify]: Simplify 0 into 0
6.112 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)))) into 0
6.113 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (* 0 1))) into 0
6.113 * [backup-simplify]: Simplify (- 0) into 0
6.113 * [backup-simplify]: Simplify 0 into 0
6.114 * [backup-simplify]: Simplify (- 0) into 0
6.114 * [backup-simplify]: Simplify 0 into 0
6.114 * [backup-simplify]: Simplify (- (+ (* (/ 1 y) (/ 0 y)) (* 0 (/ 0 y)) (* 0 (/ 0 y)))) into 0
6.116 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (+ (* 0 0) (* 0 (/ 1 y))))) into 0
6.117 * [backup-simplify]: Simplify (- (+ (* 1 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)) (* 0 (/ 0 1)))) into 0
6.118 * [backup-simplify]: Simplify (+ (* 0.5 0) (+ (* 0 0) (+ (* 0 0) (+ (* 0 0) (* 0 1))))) into 0
6.119 * [backup-simplify]: Simplify (+ 0 0) into 0
6.119 * [backup-simplify]: Simplify (- 0) into 0
6.119 * [taylor]: Taking taylor expansion of 0 in y
6.119 * [backup-simplify]: Simplify 0 into 0
6.119 * [backup-simplify]: Simplify 0 into 0
6.120 * [backup-simplify]: Simplify (+ (* (- 0.5) (* 1 (/ 1 (/ 1 (- x))))) (* (- 0.5) (* (/ 1 (/ 1 (- y))) 1))) into (+ (* 0.5 x) (* 0.5 y))
6.120 * * * [progress]: simplifying candidates
6.121 * [simplify]: Simplifying:
  (expm1 (+ x (/ (- y x) 2.0)))
  (log1p (+ x (/ (- y x) 2.0)))
  (* (exp x) (exp (/ (- y x) 2.0)))
  (log (+ x (/ (- y x) 2.0)))
  (exp (+ x (/ (- y x) 2.0)))
  (* (cbrt (+ x (/ (- y x) 2.0))) (cbrt (+ x (/ (- y x) 2.0))))
  (cbrt (+ x (/ (- y x) 2.0)))
  (* (* (+ x (/ (- y x) 2.0)) (+ x (/ (- y x) 2.0))) (+ x (/ (- y x) 2.0)))
  (sqrt (+ x (/ (- y x) 2.0)))
  (sqrt (+ x (/ (- y x) 2.0)))
  (+ (pow x 3) (pow (/ (- y x) 2.0) 3))
  (+ (* x x) (- (* (/ (- y x) 2.0) (/ (- y x) 2.0)) (* x (/ (- y x) 2.0))))
  (- (* x x) (* (/ (- y x) 2.0) (/ (- y x) 2.0)))
  (- x (/ (- y x) 2.0))
  (+ x (/ (- y x) 2.0))
  (+ x (/ y 2.0))
  (+ (* 0.5 x) (* 0.5 y))
  (+ (* 0.5 x) (* 0.5 y))
  (+ (* 0.5 x) (* 0.5 y))
6.122 * * [simplify]: iteration 0: 35 enodes
6.138 * * [simplify]: iteration 1: 98 enodes
6.194 * * [simplify]: iteration 2: 269 enodes
6.365 * * [simplify]: iteration 3: 795 enodes
7.610 * * [simplify]: iteration 4: 4126 enodes
10.830 * * [simplify]: iteration complete: 5000 enodes
10.830 * * [simplify]: Extracting #0: cost 15 inf + 0
10.831 * * [simplify]: Extracting #1: cost 213 inf + 0
10.838 * * [simplify]: Extracting #2: cost 928 inf + 241
10.862 * * [simplify]: Extracting #3: cost 1076 inf + 12624
10.926 * * [simplify]: Extracting #4: cost 394 inf + 151122
11.059 * * [simplify]: Extracting #5: cost 13 inf + 248733
11.201 * * [simplify]: Extracting #6: cost 0 inf + 248777
11.340 * [simplify]: Simplified to:
  (expm1 (+ (/ (- y x) 2.0) x))
  (log1p (+ (/ (- y x) 2.0) x))
  (exp (+ (/ (- y x) 2.0) x))
  (log (+ (/ (- y x) 2.0) x))
  (exp (+ (/ (- y x) 2.0) x))
  (* (cbrt (+ (/ (- y x) 2.0) x)) (cbrt (+ (/ (- y x) 2.0) x)))
  (cbrt (+ (/ (- y x) 2.0) x))
  (* (* (+ (/ (- y x) 2.0) x) (+ (/ (- y x) 2.0) x)) (+ (/ (- y x) 2.0) x))
  (sqrt (+ (/ (- y x) 2.0) x))
  (sqrt (+ (/ (- y x) 2.0) x))
  (fma (/ (- y x) 2.0) (* (/ (- y x) 2.0) (/ (- y x) 2.0)) (* (* x x) x))
  (fma (/ (- y x) 2.0) (- (/ (- y x) 2.0) x) (* x x))
  (* (- x (/ (- y x) 2.0)) (+ x (/ (- y x) 2.0)))
  (- x (/ (- y x) 2.0))
  (+ (/ (- y x) 2.0) x)
  (+ (/ y 2.0) x)
  (* (+ x y) 0.5)
  (* (+ x y) 0.5)
  (* (+ x y) 0.5)
11.341 * * * [progress]: adding candidates to table
11.492 * * [progress]: iteration 2 / 4
11.492 * * * [progress]: picking best candidate
11.499 * * * * [pick]: Picked  #<alt (λ (x y) (* (+ x y) 0.5))>
11.499 * * * [progress]: localizing error
11.511 * * * [progress]: generating rewritten candidates
11.511 * * * [progress]: generating series expansions
11.511 * * * [progress]: simplifying candidates
11.511 * [simplify]: Simplifying:
  
11.511 * * [simplify]: iteration 0: 0 enodes
11.511 * * [simplify]: iteration complete: 0 enodes
11.511 * * [simplify]: Extracting #0: cost 0 inf + 0
11.511 * [simplify]: Simplified to:
  
11.511 * * * [progress]: adding candidates to table
11.512 * [progress]: [Phase 3 of 3] Extracting.
11.519 * [simplify]: Simplifying:
  (* (+ x y) 0.5)
11.519 * * [simplify]: iteration 0: 5 enodes
11.520 * * [simplify]: iteration 1: 7 enodes
11.520 * * [simplify]: iteration complete: 7 enodes
11.521 * * [simplify]: Extracting #0: cost 1 inf + 0
11.521 * * [simplify]: Extracting #1: cost 3 inf + 0
11.521 * * [simplify]: Extracting #2: cost 4 inf + 1
11.521 * * [simplify]: Extracting #3: cost 1 inf + 45
11.521 * * [simplify]: Extracting #4: cost 0 inf + 128
11.521 * [simplify]: Simplified to:
  (* (+ x y) 0.5)
12.762 * [regime-testing]: Baseline error score: 0
12.780 * [regime-testing]: Oracle error score: 0
12.781 * [regime-testing]: End program error score: 0
12.996 * [regime-testing]: Target error score: 0