\[d1 \cdot d2 + d1 \cdot d3\]
d1 \cdot d2 + d1 \cdot d3
(FPCore (d1 d2 d3) :precision binary64 (+ (* d1 d2) (* d1 d3)))
double code(double d1, double d2, double d3) {
	return (d1 * d2) + (d1 * d3);
}

Reproduce

Please include this information when filing a bug report:

herbie shell --seed 2021060 
(FPCore (d1 d2 d3)
  :name "FastMath dist"
  :precision binary64

  :herbie-target
  (* d1 (+ d2 d3))

  (+ (* d1 d2) (* d1 d3)))

Backtrace

Failed to produce proof for (exp.f64 (*.f64 1/3 (-.f64 (log.f64 -1) (log.f64 (/.f64 -1 d3))))) to (cbrt.f64 d3)LC
for-loop/data/pavpan/nightlies/herbie/egg-generate-proof/src/core/simplify.rkt1678
(unnamed)/data/pavpan/nightlies/herbie/egg-generate-proof/src/core/simplify.rkt1496
egraph-add-exprs/data/pavpan/nightlies/herbie/egg-generate-proof/egg-herbie/main.rkt1540
with-egraph/data/pavpan/nightlies/herbie/egg-generate-proof/egg-herbie/main.rkt740
(unnamed)/data/pavpan/nightlies/herbie/egg-generate-proof/src/core/simplify.rkt790
simplify!/data/pavpan/nightlies/herbie/egg-generate-proof/src/mainloop.rkt2360
run-iter!/data/pavpan/nightlies/herbie/egg-generate-proof/src/mainloop.rkt3600
for-loop/data/pavpan/nightlies/herbie/egg-generate-proof/src/mainloop.rkt3912
run-improve/data/pavpan/nightlies/herbie/egg-generate-proof/src/mainloop.rkt3770
(unnamed)/data/pavpan/nightlies/herbie/egg-generate-proof/src/sandbox.rkt546
run/opt/racket-7.9/share/pkgs/profile-lib/main.rkt392
profile-thunk/opt/racket-7.9/share/pkgs/profile-lib/main.rkt90
(unnamed)/opt/racket-7.9/collects/racket/engine.rkt4224