\[x \cdot \left(y + y\right) \]
(FPCore (x y) :precision binary64 (* x (+ y y)))
double code(double x, double y) {
	return x * (y + y);
}
real(8) function code(x, y)
    real(8), intent (in) :: x
    real(8), intent (in) :: y
    code = x * (y + y)
end function
public static double code(double x, double y) {
	return x * (y + y);
}
def code(x, y):
	return x * (y + y)
function code(x, y)
	return Float64(x * Float64(y + y))
end
function tmp = code(x, y)
	tmp = x * (y + y);
end
code[x_, y_] := N[(x * N[(y + y), $MachinePrecision]), $MachinePrecision]
x \cdot \left(y + y\right)

Reproduce

Please include this information when filing a bug report:

herbie shell --seed 2023010 
(FPCore (x y)
  :name "Numeric.Integration.TanhSinh:simpson  from integration-0.2.1"
  :precision binary64
  (* x (+ y y)))

Backtrace

map: contract violation expected: list? given: #<eof>LC
gen-map/usr/share/racket/collects/racket/private/map.rkt2572
run-egglog/home/nightlies/herbie/oflatt-egglog-ctx/src/egglog/run-egglog.rkt13320
run-simplify-input/home/nightlies/herbie/oflatt-egglog-ctx/src/core/simplify.rkt730
simplify-batch/home/nightlies/herbie/oflatt-egglog-ctx/src/core/simplify.rkt480
(unnamed)/usr/share/racket/collects/racket/contract/private/arrow-higher-order.rkt37933
simplify!/home/nightlies/herbie/oflatt-egglog-ctx/src/patch.rkt2460
patch-table-run-simplify/home/nightlies/herbie/oflatt-egglog-ctx/src/patch.rkt3430
(unnamed)/usr/share/racket/collects/racket/contract/private/arrow-val-first.rkt48618
initialize-alt-table!/home/nightlies/herbie/oflatt-egglog-ctx/src/mainloop.rkt2890
mutate!/home/nightlies/herbie/oflatt-egglog-ctx/src/mainloop.rkt3720
run-improve!/home/nightlies/herbie/oflatt-egglog-ctx/src/mainloop.rkt3200
(unnamed)/home/nightlies/herbie/oflatt-egglog-ctx/src/sandbox.rkt556
(unnamed)/usr/share/racket/pkgs/profile-lib/main.rkt4010
profile-thunk/usr/share/racket/pkgs/profile-lib/main.rkt90
(unnamed)/usr/share/racket/collects/racket/engine.rkt4224