1.828 * [progress]: [Phase 1 of 3] Setting up.
0.001 * * * [progress]: [1/2] Preparing points
0.018 * * * [progress]: [2/2] Setting up program.
0.020 * [progress]: [Phase 2 of 3] Improving.
0.021 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (- (* x y) (* z t))
0.023 * * [simplify]: iteration  0 :  11  enodes  (cost  3 )
0.024 * * [simplify]: iteration  1 :  18  enodes  (cost  3 )
0.026 * * [simplify]: iteration  2 :  18  enodes  (cost  3 )
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]: generating series expansions
0.033 * * * [progress]: simplifying candidates
0.033 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   
0.036 * * [simplify]: iteration  0 :  0  enodes  (cost  0 )
0.036 * [simplify]: Simplified to:
   
0.036 * * * [progress]: adding candidates to table
0.036 * [progress]: [Phase 3 of 3] Extracting.
0.038 * [simplify]: Simplifying using  #<procedure:simplify-batch-egg> :
   (- (* x y) (* z t))
0.038 * * [simplify]: iteration  0 :  9  enodes  (cost  3 )
0.038 * * [simplify]: iteration  1 :  9  enodes  (cost  3 )
0.039 * [simplify]: Simplified to:
   (- (* x y) (* z t))
0.612 * [regime-testing]: End program error score: 0.0100743796100414