1.796 * [progress]: [Phase 1 of 3] Setting up. 0.001 * * * [progress]: [1/2] Preparing points 0.022 * * * [progress]: [2/2] Setting up program. 0.024 * [progress]: [Phase 2 of 3] Improving. 0.024 * [simplify]: Simplifying using # : (+ (- (* 9.0 (pow x 4.0)) (pow y 4.0)) (* 2.0 (* y y))) 0.026 * * [simplify]: iteration 0 : 27 enodes (cost 7 ) 0.028 * * [simplify]: iteration 1 : 55 enodes (cost 7 ) 0.030 * * [simplify]: iteration 2 : 121 enodes (cost 7 ) 0.033 * * [simplify]: iteration 3 : 295 enodes (cost 7 ) 0.039 * * [simplify]: iteration 4 : 876 enodes (cost 7 ) 0.058 * * [simplify]: iteration 5 : 3307 enodes (cost 7 ) 0.129 * * [simplify]: iteration 6 : 5002 enodes (cost 7 ) 0.129 * [simplify]: Simplified to: (+ (- (* 9.0 (pow x 4.0)) (pow y 4.0)) (* 2.0 (* y y))) 0.130 * * [progress]: iteration 1 / 4 0.130 * * * [progress]: picking best candidate 0.132 * * * * [pick]: Picked # 0.132 * * * [progress]: localizing error 0.143 * * * [progress]: generating rewritten candidates 0.143 * * * * [progress]: [ 1 / 1 ] rewriting at (2 1) 0.147 * * * [progress]: generating series expansions 0.147 * * * * [progress]: [ 1 / 1 ] generating series at (2 1) 0.147 * [approximate]: Taking taylor expansion of (- (* 9.0 (pow x 4)) (pow y 4)) in (x y) around 0 0.147 * [taylor]: Taking taylor expansion of (- (* 9.0 (pow x 4)) (pow y 4)) in y 0.147 * [taylor]: Taking taylor expansion of (* 9.0 (pow x 4)) in y 0.147 * [taylor]: Taking taylor expansion of 9.0 in y 0.147 * [taylor]: Taking taylor expansion of (pow x 4) in y 0.147 * [taylor]: Taking taylor expansion of x in y 0.147 * [taylor]: Taking taylor expansion of (pow y 4) in y 0.147 * [taylor]: Taking taylor expansion of y in y 0.147 * [taylor]: Taking taylor expansion of (- (* 9.0 (pow x 4)) (pow y 4)) in x 0.147 * [taylor]: Taking taylor expansion of (* 9.0 (pow x 4)) in x 0.147 * [taylor]: Taking taylor expansion of 9.0 in x 0.148 * [taylor]: Taking taylor expansion of (pow x 4) in x 0.148 * [taylor]: Taking taylor expansion of x in x 0.148 * [taylor]: Taking taylor expansion of (pow y 4) in x 0.148 * [taylor]: Taking taylor expansion of y in x 0.148 * [taylor]: Taking taylor expansion of (- (* 9.0 (pow x 4)) (pow y 4)) in x 0.148 * [taylor]: Taking taylor expansion of (* 9.0 (pow x 4)) in x 0.148 * [taylor]: Taking taylor expansion of 9.0 in x 0.148 * [taylor]: Taking taylor expansion of (pow x 4) in x 0.148 * [taylor]: Taking taylor expansion of x in x 0.148 * [taylor]: Taking taylor expansion of (pow y 4) in x 0.148 * [taylor]: Taking taylor expansion of y in x 0.148 * [taylor]: Taking taylor expansion of (- (pow y 4)) in y 0.148 * [taylor]: Taking taylor expansion of (pow y 4) in y 0.148 * [taylor]: Taking taylor expansion of y in y 0.149 * [taylor]: Taking taylor expansion of 0 in y 0.150 * [taylor]: Taking taylor expansion of 0 in y 0.152 * [taylor]: Taking taylor expansion of 0 in y 0.152 * [approximate]: Taking taylor expansion of (- (* 9.0 (pow (/ 1 (pow x 4.0)) 1.0)) (/ 1 (pow y 4))) in (x y) around 0 0.152 * [taylor]: Taking taylor expansion of (- (* 9.0 (pow (/ 1 (pow x 4.0)) 1.0)) (/ 1 (pow y 4))) in y 0.152 * [taylor]: Taking taylor expansion of (* 9.0 (pow (/ 1 (pow x 4.0)) 1.0)) in y 0.152 * [taylor]: Taking taylor expansion of 9.0 in y 0.152 * [taylor]: Taking taylor expansion of (pow (/ 1 (pow x 4.0)) 1.0) in y 0.152 * [taylor]: Taking taylor expansion of (exp (* 1.0 (log (/ 1 (pow x 4.0))))) in y 0.152 * [taylor]: Taking taylor expansion of (* 1.0 (log (/ 1 (pow x 4.0)))) in y 0.152 * [taylor]: Taking taylor expansion of 1.0 in y 0.152 * [taylor]: Taking taylor expansion of (log (/ 1 (pow x 4.0))) in y 0.152 * [taylor]: Taking taylor expansion of (/ 1 (pow x 4.0)) in y 0.152 * [taylor]: Taking taylor expansion of (pow x 4.0) in y 0.152 * [taylor]: Taking taylor expansion of (exp (* 4.0 (log x))) in y 0.152 * [taylor]: Taking taylor expansion of (* 4.0 (log x)) in y 0.152 * [taylor]: Taking taylor expansion of 4.0 in y 0.152 * [taylor]: Taking taylor expansion of (log x) in y 0.152 * [taylor]: Taking taylor expansion of x in y 0.153 * [taylor]: Taking taylor expansion of (/ 1 (pow y 4)) in y 0.153 * [taylor]: Taking taylor expansion of (pow y 4) in y 0.153 * [taylor]: Taking taylor expansion of y in y 0.154 * [taylor]: Taking taylor expansion of (- (* 9.0 (pow (/ 1 (pow x 4.0)) 1.0)) (/ 1 (pow y 4))) in x 0.154 * [taylor]: Taking taylor expansion of (* 9.0 (pow (/ 1 (pow x 4.0)) 1.0)) in x 0.154 * [taylor]: Taking taylor expansion of 9.0 in x 0.154 * [taylor]: Taking taylor expansion of (pow (/ 1 (pow x 4.0)) 1.0) in x 0.154 * [taylor]: Taking taylor expansion of (exp (* 1.0 (log (/ 1 (pow x 4.0))))) in x 0.154 * [taylor]: Taking taylor expansion of (* 1.0 (log (/ 1 (pow x 4.0)))) in x 0.154 * [taylor]: Taking taylor expansion of 1.0 in x 0.154 * [taylor]: Taking taylor expansion of (log (/ 1 (pow x 4.0))) in x 0.154 * [taylor]: Taking taylor expansion of (/ 1 (pow x 4.0)) in x 0.154 * [taylor]: Taking taylor expansion of (pow x 4.0) in x 0.154 * [taylor]: Taking taylor expansion of (exp (* 4.0 (log x))) in x 0.154 * [taylor]: Taking taylor expansion of (* 4.0 (log x)) in x 0.154 * [taylor]: Taking taylor expansion of 4.0 in x 0.154 * [taylor]: Taking taylor expansion of (log x) in x 0.154 * [taylor]: Taking taylor expansion of x in x 0.155 * [taylor]: Taking taylor expansion of (/ 1 (pow y 4)) in x 0.155 * [taylor]: Taking taylor expansion of (pow y 4) in x 0.155 * [taylor]: Taking taylor expansion of y in x 0.155 * [taylor]: Taking taylor expansion of (- (* 9.0 (pow (/ 1 (pow x 4.0)) 1.0)) (/ 1 (pow y 4))) in x 0.155 * [taylor]: Taking taylor expansion of (* 9.0 (pow (/ 1 (pow x 4.0)) 1.0)) in x 0.155 * [taylor]: Taking taylor expansion of 9.0 in x 0.155 * [taylor]: Taking taylor expansion of (pow (/ 1 (pow x 4.0)) 1.0) in x 0.155 * [taylor]: Taking taylor expansion of (exp (* 1.0 (log (/ 1 (pow x 4.0))))) in x 0.155 * [taylor]: Taking taylor expansion of (* 1.0 (log (/ 1 (pow x 4.0)))) in x 0.155 * [taylor]: Taking taylor expansion of 1.0 in x 0.155 * [taylor]: Taking taylor expansion of (log (/ 1 (pow x 4.0))) in x 0.155 * [taylor]: Taking taylor expansion of (/ 1 (pow x 4.0)) in x 0.155 * [taylor]: Taking taylor expansion of (pow x 4.0) in x 0.155 * [taylor]: Taking taylor expansion of (exp (* 4.0 (log x))) in x 0.155 * [taylor]: Taking taylor expansion of (* 4.0 (log x)) in x 0.155 * [taylor]: Taking taylor expansion of 4.0 in x 0.155 * [taylor]: Taking taylor expansion of (log x) in x 0.155 * [taylor]: Taking taylor expansion of x in x 0.156 * [taylor]: Taking taylor expansion of (/ 1 (pow y 4)) in x 0.157 * [taylor]: Taking taylor expansion of (pow y 4) in x 0.157 * [taylor]: Taking taylor expansion of y in x 0.157 * [taylor]: Taking taylor expansion of (- (* 9.0 (pow (/ 1 (pow x 4.0)) 1.0)) (/ 1 (pow y 4))) in y 0.157 * [taylor]: Taking taylor expansion of (* 9.0 (pow (/ 1 (pow x 4.0)) 1.0)) in y 0.157 * [taylor]: Taking taylor expansion of 9.0 in y 0.157 * [taylor]: Taking taylor expansion of (pow (/ 1 (pow x 4.0)) 1.0) in y 0.157 * [taylor]: Taking taylor expansion of (exp (* 1.0 (log (/ 1 (pow x 4.0))))) in y 0.157 * [taylor]: Taking taylor expansion of (* 1.0 (log (/ 1 (pow x 4.0)))) in y 0.157 * [taylor]: Taking taylor expansion of 1.0 in y 0.157 * [taylor]: Taking taylor expansion of (log (/ 1 (pow x 4.0))) in y 0.157 * [taylor]: Taking taylor expansion of (/ 1 (pow x 4.0)) in y 0.157 * [taylor]: Taking taylor expansion of (pow x 4.0) in y 0.157 * [taylor]: Taking taylor expansion of (exp (* 4.0 (log x))) in y 0.157 * [taylor]: Taking taylor expansion of (* 4.0 (log x)) in y 0.158 * [taylor]: Taking taylor expansion of 4.0 in y 0.158 * [taylor]: Taking taylor expansion of (log x) in y 0.158 * [taylor]: Taking taylor expansion of x in y 0.158 * [taylor]: Taking taylor expansion of (/ 1 (pow y 4)) in y 0.158 * [taylor]: Taking taylor expansion of (pow y 4) in y 0.158 * [taylor]: Taking taylor expansion of y in y 0.164 * [taylor]: Taking taylor expansion of 0 in y 0.174 * [taylor]: Taking taylor expansion of 0 in y 0.192 * [taylor]: Taking taylor expansion of 0 in y 0.212 * [taylor]: Taking taylor expansion of 0 in y 0.240 * [taylor]: Taking taylor expansion of 0 in y 0.288 * [taylor]: Taking taylor expansion of 0 in y 0.354 * [taylor]: Taking taylor expansion of 0 in y 0.354 * [approximate]: Taking taylor expansion of (- (* 9.0 (pow (/ 1 (pow x 4.0)) 1.0)) (/ 1 (pow y 4))) in (x y) around 0 0.354 * [taylor]: Taking taylor expansion of (- (* 9.0 (pow (/ 1 (pow x 4.0)) 1.0)) (/ 1 (pow y 4))) in y 0.354 * [taylor]: Taking taylor expansion of (* 9.0 (pow (/ 1 (pow x 4.0)) 1.0)) in y 0.354 * [taylor]: Taking taylor expansion of 9.0 in y 0.354 * [taylor]: Taking taylor expansion of (pow (/ 1 (pow x 4.0)) 1.0) in y 0.354 * [taylor]: Taking taylor expansion of (exp (* 1.0 (log (/ 1 (pow x 4.0))))) in y 0.354 * [taylor]: Taking taylor expansion of (* 1.0 (log (/ 1 (pow x 4.0)))) in y 0.355 * [taylor]: Taking taylor expansion of 1.0 in y 0.355 * [taylor]: Taking taylor expansion of (log (/ 1 (pow x 4.0))) in y 0.355 * [taylor]: Taking taylor expansion of (/ 1 (pow x 4.0)) in y 0.355 * [taylor]: Taking taylor expansion of (pow x 4.0) in y 0.355 * [taylor]: Taking taylor expansion of (exp (* 4.0 (log x))) in y 0.355 * [taylor]: Taking taylor expansion of (* 4.0 (log x)) in y 0.355 * [taylor]: Taking taylor expansion of 4.0 in y 0.355 * [taylor]: Taking taylor expansion of (log x) in y 0.355 * [taylor]: Taking taylor expansion of x in y 0.355 * [taylor]: Taking taylor expansion of (/ 1 (pow y 4)) in y 0.355 * [taylor]: Taking taylor expansion of (pow y 4) in y 0.355 * [taylor]: Taking taylor expansion of y in y 0.356 * [taylor]: Taking taylor expansion of (- (* 9.0 (pow (/ 1 (pow x 4.0)) 1.0)) (/ 1 (pow y 4))) in x 0.356 * [taylor]: Taking taylor expansion of (* 9.0 (pow (/ 1 (pow x 4.0)) 1.0)) in x 0.356 * [taylor]: Taking taylor expansion of 9.0 in x 0.356 * [taylor]: Taking taylor expansion of (pow (/ 1 (pow x 4.0)) 1.0) in x 0.356 * [taylor]: Taking taylor expansion of (exp (* 1.0 (log (/ 1 (pow x 4.0))))) in x 0.356 * [taylor]: Taking taylor expansion of (* 1.0 (log (/ 1 (pow x 4.0)))) in x 0.356 * [taylor]: Taking taylor expansion of 1.0 in x 0.356 * [taylor]: Taking taylor expansion of (log (/ 1 (pow x 4.0))) in x 0.356 * [taylor]: Taking taylor expansion of (/ 1 (pow x 4.0)) in x 0.356 * [taylor]: Taking taylor expansion of (pow x 4.0) in x 0.356 * [taylor]: Taking taylor expansion of (exp (* 4.0 (log x))) in x 0.356 * [taylor]: Taking taylor expansion of (* 4.0 (log x)) in x 0.356 * [taylor]: Taking taylor expansion of 4.0 in x 0.356 * [taylor]: Taking taylor expansion of (log x) in x 0.356 * [taylor]: Taking taylor expansion of x in x 0.357 * [taylor]: Taking taylor expansion of (/ 1 (pow y 4)) in x 0.357 * [taylor]: Taking taylor expansion of (pow y 4) in x 0.357 * [taylor]: Taking taylor expansion of y in x 0.358 * [taylor]: Taking taylor expansion of (- (* 9.0 (pow (/ 1 (pow x 4.0)) 1.0)) (/ 1 (pow y 4))) in x 0.358 * [taylor]: Taking taylor expansion of (* 9.0 (pow (/ 1 (pow x 4.0)) 1.0)) in x 0.358 * [taylor]: Taking taylor expansion of 9.0 in x 0.358 * [taylor]: Taking taylor expansion of (pow (/ 1 (pow x 4.0)) 1.0) in x 0.358 * [taylor]: Taking taylor expansion of (exp (* 1.0 (log (/ 1 (pow x 4.0))))) in x 0.358 * [taylor]: Taking taylor expansion of (* 1.0 (log (/ 1 (pow x 4.0)))) in x 0.358 * [taylor]: Taking taylor expansion of 1.0 in x 0.358 * [taylor]: Taking taylor expansion of (log (/ 1 (pow x 4.0))) in x 0.358 * [taylor]: Taking taylor expansion of (/ 1 (pow x 4.0)) in x 0.358 * [taylor]: Taking taylor expansion of (pow x 4.0) in x 0.358 * [taylor]: Taking taylor expansion of (exp (* 4.0 (log x))) in x 0.358 * [taylor]: Taking taylor expansion of (* 4.0 (log x)) in x 0.358 * [taylor]: Taking taylor expansion of 4.0 in x 0.358 * [taylor]: Taking taylor expansion of (log x) in x 0.358 * [taylor]: Taking taylor expansion of x in x 0.359 * [taylor]: Taking taylor expansion of (/ 1 (pow y 4)) in x 0.359 * [taylor]: Taking taylor expansion of (pow y 4) in x 0.359 * [taylor]: Taking taylor expansion of y in x 0.360 * [taylor]: Taking taylor expansion of (- (* 9.0 (pow (/ 1 (pow x 4.0)) 1.0)) (/ 1 (pow y 4))) in y 0.360 * [taylor]: Taking taylor expansion of (* 9.0 (pow (/ 1 (pow x 4.0)) 1.0)) in y 0.360 * [taylor]: Taking taylor expansion of 9.0 in y 0.360 * [taylor]: Taking taylor expansion of (pow (/ 1 (pow x 4.0)) 1.0) in y 0.360 * [taylor]: Taking taylor expansion of (exp (* 1.0 (log (/ 1 (pow x 4.0))))) in y 0.360 * [taylor]: Taking taylor expansion of (* 1.0 (log (/ 1 (pow x 4.0)))) in y 0.360 * [taylor]: Taking taylor expansion of 1.0 in y 0.360 * [taylor]: Taking taylor expansion of (log (/ 1 (pow x 4.0))) in y 0.360 * [taylor]: Taking taylor expansion of (/ 1 (pow x 4.0)) in y 0.360 * [taylor]: Taking taylor expansion of (pow x 4.0) in y 0.360 * [taylor]: Taking taylor expansion of (exp (* 4.0 (log x))) in y 0.360 * [taylor]: Taking taylor expansion of (* 4.0 (log x)) in y 0.360 * [taylor]: Taking taylor expansion of 4.0 in y 0.360 * [taylor]: Taking taylor expansion of (log x) in y 0.360 * [taylor]: Taking taylor expansion of x in y 0.361 * [taylor]: Taking taylor expansion of (/ 1 (pow y 4)) in y 0.361 * [taylor]: Taking taylor expansion of (pow y 4) in y 0.361 * [taylor]: Taking taylor expansion of y in y 0.367 * [taylor]: Taking taylor expansion of 0 in y 0.376 * [taylor]: Taking taylor expansion of 0 in y 0.389 * [taylor]: Taking taylor expansion of 0 in y 0.409 * [taylor]: Taking taylor expansion of 0 in y 0.441 * [taylor]: Taking taylor expansion of 0 in y 0.486 * [taylor]: Taking taylor expansion of 0 in y 0.554 * [taylor]: Taking taylor expansion of 0 in y 0.555 * * * [progress]: simplifying candidates 0.555 * [simplify]: Simplifying using # : (- (pow (* 9.0 (pow x 4.0)) 3) (pow (pow y 4.0) 3)) (+ (* (* 9.0 (pow x 4.0)) (* 9.0 (pow x 4.0))) (+ (* (pow y 4.0) (pow y 4.0)) (* (* 9.0 (pow x 4.0)) (pow y 4.0)))) (- (pow y 4.0)) (- (* (* 9.0 (pow x 4.0)) (* 9.0 (pow x 4.0))) (* (pow y 4.0) (pow y 4.0))) (+ (* 9.0 (pow x 4.0)) (pow y 4.0)) (- (pow y 4.0)) 0 (- (* 9.0 (pow x 4)) (pow y 4)) (- (* 9.0 (* (pow (/ 1 (pow -1 4.0)) 1.0) (pow x 4))) (pow y 4)) 0.558 * * [simplify]: iteration 0 : 91 enodes (cost 47 ) 0.560 * * [simplify]: iteration 1 : 282 enodes (cost 46 ) 0.567 * * [simplify]: iteration 2 : 1061 enodes (cost 44 ) 0.594 * * [simplify]: iteration 3 : 4741 enodes (cost 44 ) 0.715 * * [simplify]: iteration 4 : 5002 enodes (cost 44 ) 0.717 * [simplify]: Simplified to: (- (pow (* 9.0 (pow x 4.0)) 3) (pow (pow y 4.0) 3)) (+ (pow y (* 2 4.0)) (* (* 9.0 (pow x 4.0)) (+ (* 9.0 (pow x 4.0)) (pow y 4.0)))) (- (pow y 4.0)) (+ (- (pow y (* 2 4.0))) (* 9.0 (* 9.0 (pow x (* 2 4.0))))) (+ (* 9.0 (pow x 4.0)) (pow y 4.0)) (- (pow y 4.0)) 0 (- (* 9.0 (pow x 4)) (pow y 4)) (- (* 9.0 (* (pow (/ 1 (pow -1 4.0)) 1.0) (pow x 4))) (pow y 4)) 0.717 * * * [progress]: adding candidates to table 0.733 * [progress]: [Phase 3 of 3] Extracting. 0.735 * [simplify]: Simplifying using # : (+ (- (* 9.0 (pow x 4.0)) (pow y 4.0)) (* 2.0 (* y y))) 0.736 * * [simplify]: iteration 0 : 15 enodes (cost 7 ) 0.736 * * [simplify]: iteration 1 : 15 enodes (cost 7 ) 0.736 * [simplify]: Simplified to: (+ (- (* 9.0 (pow x 4.0)) (pow y 4.0)) (* 2.0 (* y y))) 1.410 * [regime-testing]: End program error score: 52.0