K=200 b=300.0 s=2.0: max|F|=9.1e-14; applicable fwd max=0.9994, bwd max=1.1224 (r0=1.5386); overall max ratio 2.7459 at gap index -1 (rel. to first free particle)
   max principle: gaps on harmonic set in [1.2156,1.9974]; non-harmonic gaps range [1.0000,2.7459]; first free gap g(i0-1)=2.7459, last g(i1)=1.0830; holds=True
K=200 b=150.0 s=0.5: max|F|=1.9e-13; applicable fwd max=1.1224, bwd max=0.9994 (r0=1.5386); overall max ratio 2.7459 at gap index +200 (rel. to first free particle)
   max principle: gaps on harmonic set in [0.6078,0.9987]; non-harmonic gaps range [0.5000,1.3729]; first free gap g(i0-1)=0.5415, last g(i1)=1.3729; holds=True
K=120 b=400.0 s=1.0: max|F|=6.3e-15; applicable fwd max=1.1455, bwd max=1.1455 (r0=1.5386); overall max ratio 13.7569 at gap index +120 (rel. to first free particle)
   max principle: gaps on harmonic set in [2.8614,5.0906]; non-harmonic gaps range [1.0000,13.7569]; first free gap g(i0-1)=13.7569, last g(i1)=13.7569; holds=True
