Exception for Expression 2, p15

Specification

\[0 \leq x \land x \leq 2\]

Math

\[\begin{array}{l} \\ x + x \cdot x \end{array} \]

FPCore

(FPCore (x) :precision binary64 (+ x (* x x)))

C

double code(double x) {
	return x + (x * x);
}

Fortran

real(8) function code(x)
    real(8), intent (in) :: x
    code = x + (x * x)
end function

Java

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

Python

def code(x):
	return x + (x * x)

Julia

function code(x)
	return Float64(x + Float64(x * x))
end

MATLAB

function tmp = code(x)
	tmp = x + (x * x);
end

Wolfram

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

Reproduce

herbie shell --seed 2024246 
(FPCore (x)
  :name "Expression 2, p15"
  :precision binary64
  :pre (and (<= 0.0 x) (<= x 2.0))

  :alt
  (! :herbie-platform default (* (+ 1 x) x))

  (+ x (* x x)))

Please file a bug report with this information.

Backtrace

map: contract violation expected: list? given: '((+.f64 x (*.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 ...		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