\ Equation counts \ Total E G L N X C B \ 10 0 0 10 0 0 0 0 \ \ Variable counts \ x b i s1s s2s sc si \ Total cont binary integer sos1 sos2 scont sint \ 9 9 0 0 0 0 0 0 \ \ Nonzero counts \ Total const NL DLL \ 39 15 24 0 \ Maximize obj: 0 x1 + 0 x2 + 0 x3 + 0 x4 + 0 x5 + 0 x6 + 0 x7 + 0 x8 + objvar Subject To e1: objvar + [ - x1^2 + 2 x1 * x2 - x2^2 - x5^2 + 2 x5 * x6 - x6^2 ] <= 0 e2: objvar + [ - x1^2 + 2 x1 * x3 - x3^2 - x5^2 + 2 x5 * x7 - x7^2 ] <= 0 e3: objvar + [ - x1^2 + 2 x1 * x4 - x4^2 - x5^2 + 2 x5 * x8 - x8^2 ] <= 0 e4: objvar + [ - x2^2 + 2 x2 * x3 - x3^2 - x6^2 + 2 x6 * x7 - x7^2 ] <= 0 e5: objvar + [ - x2^2 + 2 x2 * x4 - x4^2 - x6^2 + 2 x6 * x8 - x8^2 ] <= 0 e6: objvar + [ - x3^2 + 2 x3 * x4 - x4^2 - x7^2 + 2 x7 * x8 - x8^2 ] <= 0 e7: - x5 + x6 <= 0 e8: - x1 + x2 <= 0 e9: - x2 + x3 <= 0 e10: - x3 + x4 <= 0 Bounds .5 <= x1 <= 1 .5 <= x2 <= 1 x3 <= 1 x4 <= 1 x5 <= 1 x6 <= 1 x7 <= 1 x8 <= 1 objvar Free End