\[\left(\left(x \cdot \log y - y\right) - z\right) + \log t\]

\left(\left(x \cdot \log y - y\right) - z\right) + \log t

double f(double x, double y, double z, double t) {
        double r8199 = x;
        double r8200 = y;
        double r8201 = log(r8200);
        double r8202 = r8199 * r8201;
        double r8203 = r8202 - r8200;
        double r8204 = z;
        double r8205 = r8203 - r8204;
        double r8206 = t;
        double r8207 = log(r8206);
        double r8208 = r8205 + r8207;
        return r8208;
}

Reproduce

Please include this information when filing a bug report:

herbie shell --seed 2019194 
(FPCore (x y z t)
  :name "Numeric.SpecFunctions:incompleteGamma from math-functions-0.1.5.2, A"
  (+ (- (- (* x (log y)) y) z) (log t)))

Backtrace

result arity mismatch; expected number of values not received expected: 2 received: 1 in: local-binding form values...: 0		L	C
loop	/data/pavpan/nightlies/herbie/various-cleanup/src/core/extraction.rkt	25	2
(unnamed)	/data/pavpan/nightlies/herbie/various-cleanup/src/core/simplify.rkt	26	0
simplify!	/data/pavpan/nightlies/herbie/various-cleanup/src/mainloop.rkt	220	0
run-improve47	/data/pavpan/nightlies/herbie/various-cleanup/src/mainloop.rkt	342	0
(unnamed)	/opt/racket-7.0/collects/racket/private/more-scheme.rkt	261	28
run	/opt/racket-7.0/share/pkgs/profile-lib/main.rkt	39	2
profile-thunk16	/opt/racket-7.0/share/pkgs/profile-lib/main.rkt	9	0
(unnamed)	/opt/racket-7.0/collects/racket/private/more-scheme.rkt	261	28