$offlisting * * Equation counts * Total E G L N X C B * 11 1 0 10 0 0 0 0 * * Variable counts * x b i s1s s2s sc si * Total cont binary integer sos1 sos2 scont sint * 4 4 0 0 0 0 0 0 * FX 0 * * Nonzero counts * Total const NL DLL * 28 25 3 0 * * Solve m using NLP minimizing objvar; Variables x1,x2,x3,objvar; Positive Variables x1,x2,x3; Equations e1,e2,e3,e4,e5,e6,e7,e8,e9,e10,e11; e1.. x1 =L= 4; e2.. x2 =L= 4; e3.. x3 =L= 4; e4.. 2*x1 + 3*x2 + 4*x3 =L= 35; e5.. 2*x1 + 3*x2 - 4*x3 =L= 19; e6.. 2*x1 - 3*x2 + 4*x3 =L= 23; e7.. - 2*x1 + 3*x2 + 4*x3 =L= 27; e8.. 2*x1 - 3*x2 - 4*x3 =L= 7; e9.. - 2*x1 - 3*x2 + 4*x3 =L= 15; e10.. - 2*x1 + 3*x2 - 4*x3 =L= 11; e11.. -(x1 - 0.5*sqr(x1) - 0.5*sqr(x2) + x2 - 0.5*sqr(x3) + x3) + objvar =E= 0; Model m / all /; m.limrow=0; m.limcol=0; m.tolproj=0.0; $if NOT '%gams.u1%' == '' $include '%gams.u1%' $if not set NLP $set NLP NLP Solve m using %NLP% minimizing objvar;