I am attempting to calibrate an ArcSWAT model in SWAT-CUP. The program runs without issue when a monthly time step is selected, but stalls during the first simulation when I select daily time step within SUFI2_extract.rch.def. I have confirmed/checked the following:

• My pcp and tmp input files cover daily for the full year
• file.cio reflects the full year (IDAF=1 and IDAL=366)
• the daily timestep is indicated under IPRINT and in the extract_rch.def file
• My parameters are within range
• The correct data range (the warm-up years are excluded) is reflected in extract_rch.def file
• My formatting/inputs work when a monthly time step is selected
• I am starting with only 5 iterations and 4 parameters to test the process, I will expand on this once everything else is figured out

Does anyone have suggestions for what else might be the problem and how I might troubleshoot this issue? Thank you in advance.

Relevant information is provided below:

File.cio General Information/Watershed Configuration: fig.fig               11    | NBYR : Number of years simulated             2010    | IYR : Beginning year of simulation                1    | IDAF : Beginning julian day of simulation              366    | IDAL : Ending julian day of simulationOutput Information:                1    | IPRINT: print code (month, day, year)                3    | NYSKIP: number of years to skip output printing/summarization                0    | ILOG: streamflow print code: 1=print log of streamflow                0    | IPRP: print code for output.pst file: 1= print pesticide output SUFI2_extract_rch.def output.rch     : swat output file name 1              : number of variables to get 7            : variable column number(s) in the swat output file (as many as the above number)

23              : total number of reaches (subbasins) in the project

1              : number of reaches (subbasins) to get for the first variable 1         : reach (subbasin) numbers for the first variable

2013           : beginning year of simulation not including the warm up period 2020           : end year of simulation

1              : time step (1=daily, 2=monthly, 3=yearly) Par_inf.txt4  : Number of Parameters (the program only reads the first 4 parameters or any number indicated here)   5  : number of simulations

r__CN2.mgt              -0.2       0.2 v__ALPHA_BF.gw             0.0       1.0 v__GW_DELAY.gw               30.0      450.0 v__GWQMN.gw                0.0       2.0