1.882 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.016 * * * [progress]: [2/2] Setting up program.
0.018 * [progress]: [Phase 2 of 3] Improving.
0.018 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (- (* x y) (* z t))
0.019 * * [simplify]: iteration  0 :  7  enodes  (cost  7 )
0.020 * * [simplify]: iteration  1 :  12  enodes  (cost  7 )
0.021 * * [simplify]: iteration  2 :  20  enodes  (cost  7 )
0.024 * * [simplify]: iteration  3 :  24  enodes  (cost  7 )
0.026 * * [simplify]: iteration  done :  24  enodes  (cost  7 )
0.026 * [simplify]: Simplified to:
   (- (* x y) (* z t))
0.026 * * [progress]: iteration 1 / 4
0.026 * * * [progress]: picking best candidate
0.028 * * * * [pick]: Picked  #<alt (λ (x y z t) (- (* x y) (* z t)))>
0.028 * * * [progress]: localizing error
0.033 * * * [progress]: generating rewritten candidates
0.033 * * * * [progress]: [ 1 / 1 ] rewriting at (2)
0.036 * * * [progress]: generating series expansions
0.036 * * * * [progress]: [ 1 / 1 ] generating series at (2)
0.036 * [approximate]: Taking taylor expansion of (- (* x y) (* t z)) in (x y z t) around 0
0.037 * [taylor]: Taking taylor expansion of (- (* x y) (* t z)) in t
0.037 * [taylor]: Taking taylor expansion of (* x y) in t
0.037 * [taylor]: Taking taylor expansion of x in t
0.037 * [taylor]: Taking taylor expansion of y in t
0.037 * [taylor]: Taking taylor expansion of (* t z) in t
0.037 * [taylor]: Taking taylor expansion of t in t
0.037 * [taylor]: Taking taylor expansion of z in t
0.037 * [taylor]: Taking taylor expansion of (- (* x y) (* t z)) in z
0.037 * [taylor]: Taking taylor expansion of (* x y) in z
0.037 * [taylor]: Taking taylor expansion of x in z
0.037 * [taylor]: Taking taylor expansion of y in z
0.037 * [taylor]: Taking taylor expansion of (* t z) in z
0.037 * [taylor]: Taking taylor expansion of t in z
0.037 * [taylor]: Taking taylor expansion of z in z
0.037 * [taylor]: Taking taylor expansion of (- (* x y) (* t z)) in y
0.037 * [taylor]: Taking taylor expansion of (* x y) in y
0.037 * [taylor]: Taking taylor expansion of x in y
0.037 * [taylor]: Taking taylor expansion of y in y
0.037 * [taylor]: Taking taylor expansion of (* t z) in y
0.037 * [taylor]: Taking taylor expansion of t in y
0.037 * [taylor]: Taking taylor expansion of z in y
0.037 * [taylor]: Taking taylor expansion of (- (* x y) (* t z)) in x
0.037 * [taylor]: Taking taylor expansion of (* x y) in x
0.037 * [taylor]: Taking taylor expansion of x in x
0.037 * [taylor]: Taking taylor expansion of y in x
0.037 * [taylor]: Taking taylor expansion of (* t z) in x
0.037 * [taylor]: Taking taylor expansion of t in x
0.037 * [taylor]: Taking taylor expansion of z in x
0.037 * [taylor]: Taking taylor expansion of (- (* x y) (* t z)) in x
0.037 * [taylor]: Taking taylor expansion of (* x y) in x
0.037 * [taylor]: Taking taylor expansion of x in x
0.037 * [taylor]: Taking taylor expansion of y in x
0.037 * [taylor]: Taking taylor expansion of (* t z) in x
0.037 * [taylor]: Taking taylor expansion of t in x
0.037 * [taylor]: Taking taylor expansion of z in x
0.037 * [taylor]: Taking taylor expansion of (- (* t z)) in y
0.037 * [taylor]: Taking taylor expansion of (* t z) in y
0.037 * [taylor]: Taking taylor expansion of t in y
0.037 * [taylor]: Taking taylor expansion of z in y
0.037 * [taylor]: Taking taylor expansion of (- (* t z)) in z
0.037 * [taylor]: Taking taylor expansion of (* t z) in z
0.037 * [taylor]: Taking taylor expansion of t in z
0.037 * [taylor]: Taking taylor expansion of z in z
0.038 * [taylor]: Taking taylor expansion of 0 in t
0.038 * [taylor]: Taking taylor expansion of y in y
0.038 * [taylor]: Taking taylor expansion of 0 in z
0.038 * [taylor]: Taking taylor expansion of 0 in t
0.039 * [taylor]: Taking taylor expansion of 0 in z
0.039 * [taylor]: Taking taylor expansion of 0 in t
0.039 * [taylor]: Taking taylor expansion of (- t) in t
0.039 * [taylor]: Taking taylor expansion of t in t
0.041 * [taylor]: Taking taylor expansion of 0 in y
0.041 * [taylor]: Taking taylor expansion of 0 in z
0.041 * [taylor]: Taking taylor expansion of 0 in t
0.041 * [approximate]: Taking taylor expansion of (- (/ 1 (* x y)) (/ 1 (* t z))) in (x y z t) around 0
0.041 * [taylor]: Taking taylor expansion of (- (/ 1 (* x y)) (/ 1 (* t z))) in t
0.041 * [taylor]: Taking taylor expansion of (/ 1 (* x y)) in t
0.041 * [taylor]: Taking taylor expansion of (* x y) in t
0.041 * [taylor]: Taking taylor expansion of x in t
0.041 * [taylor]: Taking taylor expansion of y in t
0.041 * [taylor]: Taking taylor expansion of (/ 1 (* t z)) in t
0.041 * [taylor]: Taking taylor expansion of (* t z) in t
0.041 * [taylor]: Taking taylor expansion of t in t
0.041 * [taylor]: Taking taylor expansion of z in t
0.042 * [taylor]: Taking taylor expansion of (- (/ 1 (* x y)) (/ 1 (* t z))) in z
0.042 * [taylor]: Taking taylor expansion of (/ 1 (* x y)) in z
0.042 * [taylor]: Taking taylor expansion of (* x y) in z
0.042 * [taylor]: Taking taylor expansion of x in z
0.042 * [taylor]: Taking taylor expansion of y in z
0.042 * [taylor]: Taking taylor expansion of (/ 1 (* t z)) in z
0.042 * [taylor]: Taking taylor expansion of (* t z) in z
0.042 * [taylor]: Taking taylor expansion of t in z
0.042 * [taylor]: Taking taylor expansion of z in z
0.042 * [taylor]: Taking taylor expansion of (- (/ 1 (* x y)) (/ 1 (* t z))) in y
0.042 * [taylor]: Taking taylor expansion of (/ 1 (* x y)) in y
0.042 * [taylor]: Taking taylor expansion of (* x y) in y
0.042 * [taylor]: Taking taylor expansion of x in y
0.042 * [taylor]: Taking taylor expansion of y in y
0.042 * [taylor]: Taking taylor expansion of (/ 1 (* t z)) in y
0.042 * [taylor]: Taking taylor expansion of (* t z) in y
0.042 * [taylor]: Taking taylor expansion of t in y
0.042 * [taylor]: Taking taylor expansion of z in y
0.042 * [taylor]: Taking taylor expansion of (- (/ 1 (* x y)) (/ 1 (* t z))) in x
0.043 * [taylor]: Taking taylor expansion of (/ 1 (* x y)) in x
0.043 * [taylor]: Taking taylor expansion of (* x y) in x
0.043 * [taylor]: Taking taylor expansion of x in x
0.043 * [taylor]: Taking taylor expansion of y in x
0.043 * [taylor]: Taking taylor expansion of (/ 1 (* t z)) in x
0.043 * [taylor]: Taking taylor expansion of (* t z) in x
0.043 * [taylor]: Taking taylor expansion of t in x
0.043 * [taylor]: Taking taylor expansion of z in x
0.043 * [taylor]: Taking taylor expansion of (- (/ 1 (* x y)) (/ 1 (* t z))) in x
0.043 * [taylor]: Taking taylor expansion of (/ 1 (* x y)) in x
0.043 * [taylor]: Taking taylor expansion of (* x y) in x
0.043 * [taylor]: Taking taylor expansion of x in x
0.043 * [taylor]: Taking taylor expansion of y in x
0.043 * [taylor]: Taking taylor expansion of (/ 1 (* t z)) in x
0.043 * [taylor]: Taking taylor expansion of (* t z) in x
0.043 * [taylor]: Taking taylor expansion of t in x
0.043 * [taylor]: Taking taylor expansion of z in x
0.044 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.044 * [taylor]: Taking taylor expansion of y in y
0.044 * [taylor]: Taking taylor expansion of 1 in z
0.045 * [taylor]: Taking taylor expansion of (- (/ 1 (* t z))) in y
0.045 * [taylor]: Taking taylor expansion of (/ 1 (* t z)) in y
0.045 * [taylor]: Taking taylor expansion of (* t z) in y
0.045 * [taylor]: Taking taylor expansion of t in y
0.045 * [taylor]: Taking taylor expansion of z in y
0.045 * [taylor]: Taking taylor expansion of 0 in z
0.045 * [taylor]: Taking taylor expansion of 1 in t
0.049 * [taylor]: Taking taylor expansion of 0 in y
0.049 * [taylor]: Taking taylor expansion of (- (/ 1 (* t z))) in z
0.050 * [taylor]: Taking taylor expansion of (/ 1 (* t z)) in z
0.050 * [taylor]: Taking taylor expansion of (* t z) in z
0.050 * [taylor]: Taking taylor expansion of t in z
0.050 * [taylor]: Taking taylor expansion of z in z
0.050 * [taylor]: Taking taylor expansion of (- (/ 1 t)) in t
0.050 * [taylor]: Taking taylor expansion of (/ 1 t) in t
0.050 * [taylor]: Taking taylor expansion of t in t
0.051 * [taylor]: Taking taylor expansion of 0 in z
0.051 * [taylor]: Taking taylor expansion of 0 in t
0.051 * [taylor]: Taking taylor expansion of 0 in t
0.053 * [taylor]: Taking taylor expansion of 0 in y
0.053 * [taylor]: Taking taylor expansion of 0 in z
0.053 * [taylor]: Taking taylor expansion of 0 in z
0.054 * [taylor]: Taking taylor expansion of 0 in z
0.055 * [taylor]: Taking taylor expansion of 0 in t
0.055 * [taylor]: Taking taylor expansion of 0 in t
0.055 * [taylor]: Taking taylor expansion of 0 in t
0.055 * [taylor]: Taking taylor expansion of 0 in t
0.058 * [taylor]: Taking taylor expansion of 0 in y
0.058 * [taylor]: Taking taylor expansion of 0 in z
0.058 * [taylor]: Taking taylor expansion of 0 in z
0.059 * [taylor]: Taking taylor expansion of 0 in z
0.059 * [taylor]: Taking taylor expansion of 0 in z
0.059 * [taylor]: Taking taylor expansion of 0 in t
0.059 * [taylor]: Taking taylor expansion of 0 in t
0.059 * [taylor]: Taking taylor expansion of 0 in t
0.060 * [taylor]: Taking taylor expansion of 0 in t
0.060 * [taylor]: Taking taylor expansion of 0 in t
0.060 * [taylor]: Taking taylor expansion of 0 in t
0.060 * [taylor]: Taking taylor expansion of 0 in t
0.061 * [approximate]: Taking taylor expansion of (- (/ 1 (* x y)) (/ 1 (* t z))) in (x y z t) around 0
0.061 * [taylor]: Taking taylor expansion of (- (/ 1 (* x y)) (/ 1 (* t z))) in t
0.061 * [taylor]: Taking taylor expansion of (/ 1 (* x y)) in t
0.061 * [taylor]: Taking taylor expansion of (* x y) in t
0.061 * [taylor]: Taking taylor expansion of x in t
0.061 * [taylor]: Taking taylor expansion of y in t
0.061 * [taylor]: Taking taylor expansion of (/ 1 (* t z)) in t
0.061 * [taylor]: Taking taylor expansion of (* t z) in t
0.061 * [taylor]: Taking taylor expansion of t in t
0.061 * [taylor]: Taking taylor expansion of z in t
0.061 * [taylor]: Taking taylor expansion of (- (/ 1 (* x y)) (/ 1 (* t z))) in z
0.061 * [taylor]: Taking taylor expansion of (/ 1 (* x y)) in z
0.061 * [taylor]: Taking taylor expansion of (* x y) in z
0.061 * [taylor]: Taking taylor expansion of x in z
0.061 * [taylor]: Taking taylor expansion of y in z
0.061 * [taylor]: Taking taylor expansion of (/ 1 (* t z)) in z
0.061 * [taylor]: Taking taylor expansion of (* t z) in z
0.061 * [taylor]: Taking taylor expansion of t in z
0.061 * [taylor]: Taking taylor expansion of z in z
0.062 * [taylor]: Taking taylor expansion of (- (/ 1 (* x y)) (/ 1 (* t z))) in y
0.062 * [taylor]: Taking taylor expansion of (/ 1 (* x y)) in y
0.062 * [taylor]: Taking taylor expansion of (* x y) in y
0.062 * [taylor]: Taking taylor expansion of x in y
0.062 * [taylor]: Taking taylor expansion of y in y
0.062 * [taylor]: Taking taylor expansion of (/ 1 (* t z)) in y
0.062 * [taylor]: Taking taylor expansion of (* t z) in y
0.062 * [taylor]: Taking taylor expansion of t in y
0.062 * [taylor]: Taking taylor expansion of z in y
0.062 * [taylor]: Taking taylor expansion of (- (/ 1 (* x y)) (/ 1 (* t z))) in x
0.062 * [taylor]: Taking taylor expansion of (/ 1 (* x y)) in x
0.062 * [taylor]: Taking taylor expansion of (* x y) in x
0.062 * [taylor]: Taking taylor expansion of x in x
0.062 * [taylor]: Taking taylor expansion of y in x
0.063 * [taylor]: Taking taylor expansion of (/ 1 (* t z)) in x
0.063 * [taylor]: Taking taylor expansion of (* t z) in x
0.063 * [taylor]: Taking taylor expansion of t in x
0.063 * [taylor]: Taking taylor expansion of z in x
0.063 * [taylor]: Taking taylor expansion of (- (/ 1 (* x y)) (/ 1 (* t z))) in x
0.063 * [taylor]: Taking taylor expansion of (/ 1 (* x y)) in x
0.063 * [taylor]: Taking taylor expansion of (* x y) in x
0.063 * [taylor]: Taking taylor expansion of x in x
0.063 * [taylor]: Taking taylor expansion of y in x
0.063 * [taylor]: Taking taylor expansion of (/ 1 (* t z)) in x
0.063 * [taylor]: Taking taylor expansion of (* t z) in x
0.063 * [taylor]: Taking taylor expansion of t in x
0.063 * [taylor]: Taking taylor expansion of z in x
0.063 * [taylor]: Taking taylor expansion of (/ 1 y) in y
0.063 * [taylor]: Taking taylor expansion of y in y
0.064 * [taylor]: Taking taylor expansion of 1 in z
0.064 * [taylor]: Taking taylor expansion of (- (/ 1 (* t z))) in y
0.064 * [taylor]: Taking taylor expansion of (/ 1 (* t z)) in y
0.064 * [taylor]: Taking taylor expansion of (* t z) in y
0.065 * [taylor]: Taking taylor expansion of t in y
0.065 * [taylor]: Taking taylor expansion of z in y
0.065 * [taylor]: Taking taylor expansion of 0 in z
0.065 * [taylor]: Taking taylor expansion of 1 in t
0.067 * [taylor]: Taking taylor expansion of 0 in y
0.067 * [taylor]: Taking taylor expansion of (- (/ 1 (* t z))) in z
0.067 * [taylor]: Taking taylor expansion of (/ 1 (* t z)) in z
0.067 * [taylor]: Taking taylor expansion of (* t z) in z
0.067 * [taylor]: Taking taylor expansion of t in z
0.067 * [taylor]: Taking taylor expansion of z in z
0.067 * [taylor]: Taking taylor expansion of (- (/ 1 t)) in t
0.067 * [taylor]: Taking taylor expansion of (/ 1 t) in t
0.067 * [taylor]: Taking taylor expansion of t in t
0.068 * [taylor]: Taking taylor expansion of 0 in z
0.068 * [taylor]: Taking taylor expansion of 0 in t
0.068 * [taylor]: Taking taylor expansion of 0 in t
0.070 * [taylor]: Taking taylor expansion of 0 in y
0.070 * [taylor]: Taking taylor expansion of 0 in z
0.071 * [taylor]: Taking taylor expansion of 0 in z
0.071 * [taylor]: Taking taylor expansion of 0 in z
0.072 * [taylor]: Taking taylor expansion of 0 in t
0.072 * [taylor]: Taking taylor expansion of 0 in t
0.072 * [taylor]: Taking taylor expansion of 0 in t
0.072 * [taylor]: Taking taylor expansion of 0 in t
0.075 * [taylor]: Taking taylor expansion of 0 in y
0.075 * [taylor]: Taking taylor expansion of 0 in z
0.075 * [taylor]: Taking taylor expansion of 0 in z
0.076 * [taylor]: Taking taylor expansion of 0 in z
0.076 * [taylor]: Taking taylor expansion of 0 in z
0.076 * [taylor]: Taking taylor expansion of 0 in t
0.076 * [taylor]: Taking taylor expansion of 0 in t
0.076 * [taylor]: Taking taylor expansion of 0 in t
0.077 * [taylor]: Taking taylor expansion of 0 in t
0.077 * [taylor]: Taking taylor expansion of 0 in t
0.077 * [taylor]: Taking taylor expansion of 0 in t
0.077 * [taylor]: Taking taylor expansion of 0 in t
0.078 * * * [progress]: simplifying candidates
0.078 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (fma x y (- (* t z)))
  (fma (- t) z (* t z))
  (expm1 (- (* x y) (* z t)))
  (log1p (- (* x y) (* z t)))
  (- (* z t))
  (/ (exp (* x y)) (exp (* z t)))
  (log (- (* x y) (* z t)))
  (exp (- (* x y) (* z t)))
  (* (cbrt (- (* x y) (* z t))) (cbrt (- (* x y) (* z t))))
  (cbrt (- (* x y) (* z t)))
  (* (* (- (* x y) (* z t)) (- (* x y) (* z t))) (- (* x y) (* z t)))
  (sqrt (- (* x y) (* z t)))
  (sqrt (- (* x y) (* z t)))
  (- (pow (* x y) 3) (pow (* z t) 3))
  (+ (* (* x y) (* x y)) (+ (* (* z t) (* z t)) (* (* x y) (* z t))))
  (- (* z t))
  (- (* (* x y) (* x y)) (* (* z t) (* z t)))
  (+ (* x y) (* z t))
  (- (* z t))
  0
  (- (* x y) (* t z))
  (- (* x y) (* t z))
0.080 * * [simplify]: iteration  0 :  38  enodes  (cost  202 )
0.086 * * [simplify]: iteration  1 :  106  enodes  (cost  193 )
0.103 * * [simplify]: iteration  2 :  324  enodes  (cost  178 )
0.169 * * [simplify]: iteration  3 :  898  enodes  (cost  178 )
0.363 * * [simplify]: iteration  4 :  2090  enodes  (cost  173 )
0.965 * * [simplify]: iteration  done :  5000  enodes  (cost  173 )
0.965 * [simplify]: Simplified to:
   (- (* x y) (* t z))
  0
  (expm1 (- (* x y) (* z t)))
  (log1p (- (* x y) (* z t)))
  (- (* t z))
  (exp (- (* x y) (* t z)))
  (log (- (* x y) (* z t)))
  (exp (- (* x y) (* t z)))
  (* (cbrt (- (* x y) (* z t))) (cbrt (- (* x y) (* z t))))
  (cbrt (- (* x y) (* z t)))
  (pow (- (* x y) (* t z)) 3)
  (sqrt (- (* x y) (* z t)))
  (sqrt (- (* x y) (* z t)))
  (- (pow (* x y) 3) (pow (* z t) 3))
  (fma (* x y) (* x y) (* (* z t) (fma x y (* z t))))
  (- (* t z))
  (* (fma x y (* z t)) (- (* x y) (* t z)))
  (fma x y (* z t))
  (- (* t z))
  0
  (- (* x y) (* t z))
  (- (* x y) (* t z))
0.965 * * * [progress]: adding candidates to table
1.008 * [progress]: [Phase 3 of 3] Extracting.
1.009 * [simplify]: Simplifying using  #<procedure:simplify-batch-regraph> :
   (- (* x y) (* z t))
1.009 * * [simplify]: iteration  0 :  7  enodes  (cost  7 )
1.010 * * [simplify]: iteration  1 :  9  enodes  (cost  7 )
1.010 * * [simplify]: iteration  done :  9  enodes  (cost  7 )
1.010 * [simplify]: Simplified to:
   (- (* x y) (* z t))
1.569 * [regime-testing]: End program error score: 0.009562676971662668