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diff --git a/symphony/symphony_conmatrix2.sce b/symphony/symphony_conmatrix2.sce
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+// Check the size for conMatrix
+// A basic case :
+
+// Objective function
+c = [350*5,330*3,310*4,280*6,500,450,400,100]';
+
+// Lower Bound of variable
+lb = repmat(0,8,1);
+
+// Upper Bound of variables
+ub = [repmat(1,4,1);repmat(%inf,4,1)];
+
+// Constraint Matrix
+conMatrix = [5,3,4,6,1,1,1,1;
+5*0.05,3*0.04,4*0.05,6*0.03,0.08,0.07,0.06,0.03;]
+
+// Lower Bound of constrains
+conlb = [ 25; 1.25; 1.25]
+
+// Upper Bound of constrains
+conub = [ 25; 1.25; 1.25]
+
+// Row Matrix for telling symphony that the is integer or not
+isInt = [repmat(%t,1,4) repmat(%f,1,4)];
+
+// Calling Symphony
+[x,f,status,output] = symphony(8,3,c,isInt,lb,ub,conMatrix,conlb,conub,1)
+
+// Error
+//Symphony: The number of rows in constraint should be equal to the number of constraints
+//at line     238 of function symphony called by :  
+//[x,f,status,output] = symphony(8,3,c,isInt,lb,ub,conMatrix,conlb,conub,1)