diff --git a/run.m b/run.m
index 31ca8f8..2151b02 100644
--- a/run.m
+++ b/run.m
@@ -97,7 +97,7 @@ Busnum=length(Volt);
 seOpti=SEOpti();
 seOpti=seOpti.init(Busnum, mVolt,sigma,newwordParameter,zerosInjectionIndex,cmpY,onlyPG,onlyQG,mPG,mQG,Balance,mBranchI,mBranchP,mBranchQ,Y,Yangle,r,c );
 opts = optiset('solver','ipopt');
-opts.maxiter=2500;
+opts.maxiter=3500;
 opts.tolrfun=1e-3;
 opts.tolafun=1e-3;
 opts.warnings='warnings';