5.773 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.047 * * * [progress]: [2/2] Setting up program.
0.054 * [progress]: [Phase 2 of 3] Improving.
0.054 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (- (* x y) (* z t))
0.056 * * [simplify]: iteration  0 :  11  enodes  (cost  3 )
0.057 * * [simplify]: iteration  1 :  18  enodes  (cost  3 )
0.058 * * [simplify]: iteration  2 :  18  enodes  (cost  3 )
0.058 * [simplify]: Simplified to:
   (- (* x y) (* z t))
0.058 * * [progress]: iteration 1 / 4
0.058 * * * [progress]: picking best candidate
0.065 * * * * [pick]: Picked  #<alt (λ (x y z t) (- (* x y) (* z t)))>
0.065 * * * [progress]: localizing error
0.071 * * * [progress]: generating rewritten candidates
0.071 * * * [progress]: generating series expansions
0.071 * * * [progress]: simplifying candidates
0.071 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   
0.072 * * [simplify]: iteration  0 :  0  enodes  (cost  0 )
0.072 * [simplify]: Simplified to:
   
0.073 * * * [progress]: adding candidates to table
0.073 * [progress]: [Phase 3 of 3] Extracting.
0.076 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (- (* x y) (* z t))
0.076 * * [simplify]: iteration  0 :  9  enodes  (cost  3 )
0.077 * * [simplify]: iteration  1 :  9  enodes  (cost  3 )
0.077 * [simplify]: Simplified to:
   (- (* x y) (* z t))
1.575 * [regime-testing]: End program error score: 0.011897727841160435