'IntermediateCrossover' not terminating

[jenetics]

The IntermediateCrossover is not terminating if it tries to crossover two equal individuals with the maximal value.

@Override
protected int crossover(final MSeq<G> v, final MSeq<G> w) {
    final Random random = RandomRegistry.random();

    final double min = v.get(0).min().doubleValue();
    final double max = v.get(0).max().doubleValue();

    for (int i = 0, n = min(v.length(), w.length()); i < n; ++i) {
        final double vi = v.get(i).doubleValue();
        final double wi = w.get(i).doubleValue();

        double t, s;
        do {
            final double a = nextDouble(-_p, 1 + _p, random);
            final double b = nextDouble(-_p, 1 + _p, random);

            t = a*vi + (1 - a)*wi;
            s = b*wi + (1 - b)*vi;
            System.out.println(format(
                "min=%s, max=%s, vi=%s, wi=%s, t=%s, s=%s, a=%s, b=%s, p=%s",
                min, max, vi, wi, t, s, a, b, _p
            ));
        } while (t < min || s < min || t >= max || s >= max);

        v.set(i, v.get(i).newInstance(t));
        w.set(i, w.get(i).newInstance(s));
    }

    return 2;
}

With two equal individuals to crossover, the while-Loop will not terminate with maximal values.

min=0.0, max=100.0, vi=100.0, wi=100.0, t=100.0, s=100.0, a=0.060927758442538615, b=0.30894420728757566, p=0.0
min=0.0, max=100.0, vi=100.0, wi=100.0, t=100.0, s=100.0, a=0.9357120721578135, b=0.5412833594065434, p=0.0
min=0.0, max=100.0, vi=100.0, wi=100.0, t=100.0, s=100.0, a=0.7560184530335406, b=0.6390527838043711, p=0.0
min=0.0, max=100.0, vi=100.0, wi=100.0, t=100.0, s=100.0, a=0.7442361608972529, b=0.025760472728500128, p=0.0
min=0.0, max=100.0, vi=100.0, wi=100.0, t=100.0, s=100.0, a=0.8100080637707349, b=0.4297138951658802, p=0.0
min=0.0, max=100.0, vi=100.0, wi=100.0, t=100.0, s=100.0, a=0.02417624509603533, b=0.43765099704303234, p=0.0
min=0.0, max=100.0, vi=100.0, wi=100.0, t=100.0, s=100.0, a=0.11362305896001412, b=0.9704788776706555, p=0.0
min=0.0, max=100.0, vi=100.0, wi=100.0, t=100.0, s=100.0, a=0.480805088126826, b=0.3683165017056297, p=0.0
min=0.0, max=100.0, vi=100.0, wi=100.0, t=100.0, s=100.0, a=0.5278484685192272, b=0.36546356885717, p=0.0
min=0.0, max=100.0, vi=100.0, wi=100.0, t=100.0, s=100.0, a=0.20217221236223726, b=0.28337988416641846, p=0.0
min=0.0, max=100.0, vi=100.0, wi=100.0, t=100.0, s=100.0, a=0.9605925711966199, b=0.011420085223559528, p=0.0
min=0.0, max=100.0, vi=100.0, wi=100.0, t=100.0, s=100.0, a=0.9265911385512179, b=0.9814060743806482, p=0.0
...

Is related to #701

[jenetics]

Merged into r6.0.1.