$title CNS model - singular, nonsquare (cns08,SEQ=98) $onText This CNS model is singular and it should be caught by GAMS since it is not square. $offText maxexecerror = 1; variable x; equation e1, e2; e1 .. x =e= 1; e2 .. x =e= 1; model cns08 / all /; option limrow = 0, limcol = 0; solve cns08 using cns; abort$(execerror=0) 'previous solve should have given exec errors'; abort$(cns08.solvestat <> %solveStat.solveProcessingSkipped% or cns08.modelstat <> %modelStat.noSolutionReturned%) 'bad return codes'; execerror = 0;