$offlisting * * Equation counts * Total E G L N X C B * 4 1 1 2 0 0 0 0 * * Variable counts * x b i s1s s2s sc si * Total cont binary integer sos1 sos2 scont sint * 5 3 0 2 0 0 0 0 * FX 0 * * Nonzero counts * Total const NL DLL * 11 5 6 0 * * Solve m using MINLP minimizing objvar; Variables i1,i2,x3,x4,objvar; Integer Variables i1,i2; Equations e1,e2,e3,e4; e1.. - 0.0625*i1 + 0.0193*x3 =L= 0; e2.. - 0.0625*i2 + 0.00954*x3 =L= 0; e3.. 3.1415927*(sqr(x3)*x4 + 1.33333333333333*POWER(x3,3)) =G= 1296000; e4.. -(0.0389*i1*x3*x4 + 0.1111312*sqr(x3)*i2 + 0.012348046875*sqr(i1)*x4 + 0.0775*sqr(i1)*x3) + objvar =E= 0; * set non-default bounds i1.lo = 18; i1.up = 100; i2.lo = 10; i2.up = 100; x3.lo = 40; x3.up = 80; x4.lo = 20; x4.up = 60; Model m / all /; m.limrow=0; m.limcol=0; m.tolproj=0.0; $if NOT '%gams.u1%' == '' $include '%gams.u1%' $if not set MINLP $set MINLP MINLP Solve m using %MINLP% minimizing objvar;