Exception for Development.Shake.Profile:generateTrace from shake-0.15.5

Specification

Math

\[\begin{array}{l} \\ 1000000 \cdot \left(x - x\right) \end{array} \]

FPCore

(FPCore (x) :precision binary64 (* 1000000.0 (- x x)))

C

double code(double x) {
	return 1000000.0 * (x - x);
}

Fortran

real(8) function code(x)
    real(8), intent (in) :: x
    code = 1000000.0d0 * (x - x)
end function

Java

public static double code(double x) {
	return 1000000.0 * (x - x);
}

Python

def code(x):
	return 1000000.0 * (x - x)

Julia

function code(x)
	return Float64(1000000.0 * Float64(x - x))
end

MATLAB

function tmp = code(x)
	tmp = 1000000.0 * (x - x);
end

Wolfram

code[x_] := N[(1000000.0 * N[(x - x), $MachinePrecision]), $MachinePrecision]

Reproduce

herbie shell --seed 2024246 
(FPCore (x)
  :name "Development.Shake.Profile:generateTrace from shake-0.15.5"
  :precision binary64

  :alt
  (! :herbie-platform default 0)

  (* 1000000.0 (- x x)))

Please file a bug report with this information.

Backtrace

map: contract violation expected: list? given: '((-.f64 x x) . #hasheq((errs . (1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ...		L	C
gen-map	/usr/local/racket/collects/racket/private/map.rkt	257	2
actual-errors	/home/nightlies/herbie/zane-concrete-values/src/core/explain.rkt	35	0
generate-timelines	/home/nightlies/herbie/zane-concrete-values/src/core/explain.rkt	493	0
explain!	/home/nightlies/herbie/zane-concrete-values/src/core/mainloop.rkt	322	0
run-improve!	/home/nightlies/herbie/zane-concrete-values/src/core/mainloop.rkt	44	0
get-alternatives/report	/home/nightlies/herbie/zane-concrete-values/src/api/sandbox.rkt	186	0
(unnamed)	/home/nightlies/herbie/zane-concrete-values/src/api/sandbox.rkt	282	6
(unnamed)	/usr/local/racket/share/pkgs/profile-lib/main.rkt	40	10
profile-thunk	/usr/local/racket/share/pkgs/profile-lib/main.rkt	9	0
(unnamed)	/usr/local/racket/collects/racket/engine.rkt	42	24