14.253 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.121 * * * [progress]: [2/2] Setting up program.
0.126 * [progress]: [Phase 2 of 3] Improving.
0.126 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (- (+ (* (sqrt (/ 2.0 PI)) (exp (/ (neg (pow a 2.0)) 2.0))) (* a (erf (/ a (sqrt 2.0))))) (+ (* (sqrt (/ 2.0 PI)) (exp (/ (neg (pow b 2.0)) 2.0))) (* a (erf (/ b (sqrt 2.0))))))
0.129 * * [simplify]: iteration  0 :  53  enodes  (cost  25 )
0.130 * * [simplify]: iteration  1 :  106  enodes  (cost  25 )
0.133 * * [simplify]: iteration  2 :  261  enodes  (cost  22 )
0.137 * * [simplify]: iteration  3 :  802  enodes  (cost  21 )
0.152 * * [simplify]: iteration  4 :  3383  enodes  (cost  21 )
0.221 * * [simplify]: iteration  5 :  5002  enodes  (cost  21 )
0.221 * [simplify]: Simplified to:
   (+ (* (sqrt (/ 2.0 PI)) (- (exp (/ (neg (pow a 2.0)) 2.0)) (exp (/ (neg (pow b 2.0)) 2.0)))) (* a (- (erf (/ a (sqrt 2.0))) (erf (/ b (sqrt 2.0))))))
0.227 * [progress]: [Phase 3 of 3] Extracting.
0.227 * * [regime]: Finding splitpoints for: (#<alt (λ (a b) (+ (* (sqrt (/ 2.0 PI)) (- (exp (/ (neg (pow a 2.0)) 2.0)) (exp (/ (neg (pow b 2.0)) 2.0)))) (* a (- (erf (/ a (sqrt 2.0))) (erf (/ b (sqrt 2.0)))))))> #<alt (λ (a b) (- (+ (* (sqrt (/ 2.0 PI)) (exp (/ (neg (pow a 2.0)) 2.0))) (* a (erf (/ a (sqrt 2.0))))) (+ (* (sqrt (/ 2.0 PI)) (exp (/ (neg (pow b 2.0)) 2.0))) (* a (erf (/ b (sqrt 2.0)))))))>)
0.229 * * * [regime-changes]: Trying 3 branch expressions: ((- (+ (* (sqrt (/ 2.0 PI)) (exp (/ (neg (pow a 2.0)) 2.0))) (* a (erf (/ a (sqrt 2.0))))) (+ (* (sqrt (/ 2.0 PI)) (exp (/ (neg (pow b 2.0)) 2.0))) (* a (erf (/ b (sqrt 2.0)))))) b a)
0.229 * * * * [regimes]: Trying to branch on (- (+ (* (sqrt (/ 2.0 PI)) (exp (/ (neg (pow a 2.0)) 2.0))) (* a (erf (/ a (sqrt 2.0))))) (+ (* (sqrt (/ 2.0 PI)) (exp (/ (neg (pow b 2.0)) 2.0))) (* a (erf (/ b (sqrt 2.0)))))) from (#<alt (λ (a b) (+ (* (sqrt (/ 2.0 PI)) (- (exp (/ (neg (pow a 2.0)) 2.0)) (exp (/ (neg (pow b 2.0)) 2.0)))) (* a (- (erf (/ a (sqrt 2.0))) (erf (/ b (sqrt 2.0)))))))> #<alt (λ (a b) (- (+ (* (sqrt (/ 2.0 PI)) (exp (/ (neg (pow a 2.0)) 2.0))) (* a (erf (/ a (sqrt 2.0))))) (+ (* (sqrt (/ 2.0 PI)) (exp (/ (neg (pow b 2.0)) 2.0))) (* a (erf (/ b (sqrt 2.0)))))))>)
0.311 * * * * [regimes]: Trying to branch on b from (#<alt (λ (a b) (+ (* (sqrt (/ 2.0 PI)) (- (exp (/ (neg (pow a 2.0)) 2.0)) (exp (/ (neg (pow b 2.0)) 2.0)))) (* a (- (erf (/ a (sqrt 2.0))) (erf (/ b (sqrt 2.0)))))))> #<alt (λ (a b) (- (+ (* (sqrt (/ 2.0 PI)) (exp (/ (neg (pow a 2.0)) 2.0))) (* a (erf (/ a (sqrt 2.0))))) (+ (* (sqrt (/ 2.0 PI)) (exp (/ (neg (pow b 2.0)) 2.0))) (* a (erf (/ b (sqrt 2.0)))))))>)
0.348 * * * * [regimes]: Trying to branch on a from (#<alt (λ (a b) (+ (* (sqrt (/ 2.0 PI)) (- (exp (/ (neg (pow a 2.0)) 2.0)) (exp (/ (neg (pow b 2.0)) 2.0)))) (* a (- (erf (/ a (sqrt 2.0))) (erf (/ b (sqrt 2.0)))))))> #<alt (λ (a b) (- (+ (* (sqrt (/ 2.0 PI)) (exp (/ (neg (pow a 2.0)) 2.0))) (* a (erf (/ a (sqrt 2.0))))) (+ (* (sqrt (/ 2.0 PI)) (exp (/ (neg (pow b 2.0)) 2.0))) (* a (erf (/ b (sqrt 2.0)))))))>)
0.385 * * * [regime]: Found split indices: #<option (#s(si 0 255))>
0.385 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (+ (* (sqrt (/ 2.0 PI)) (- (exp (/ (neg (pow a 2.0)) 2.0)) (exp (/ (neg (pow b 2.0)) 2.0)))) (* a (- (erf (/ a (sqrt 2.0))) (erf (/ b (sqrt 2.0))))))
0.386 * * [simplify]: iteration  0 :  31  enodes  (cost  21 )
0.386 * * [simplify]: iteration  1 :  31  enodes  (cost  21 )
0.386 * [simplify]: Simplified to:
   (+ (* (sqrt (/ 2.0 PI)) (- (exp (/ (neg (pow a 2.0)) 2.0)) (exp (/ (neg (pow b 2.0)) 2.0)))) (* a (- (erf (/ a (sqrt 2.0))) (erf (/ b (sqrt 2.0))))))
4.806 * [regime-testing]: End program error score: 10.437191511835739