Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_9_Buildings.Fluid.Humidifiers.Validation.SteamHumidifier_X.conf.json loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 9.1.3-maint.9.1.x/package.mo", uses=false) Using package Buildings with version 9.1.3 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 9.1.3-maint.9.1.x/package.mo) Using package Modelica with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo) Using package Complex with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo) Using package ModelicaServices with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo) Running command: "" <> buildModelFMU(Buildings.Fluid.Humidifiers.Validation.SteamHumidifier_X,fileNamePrefix="Buildings_9_Buildings_Fluid_Humidifiers_Validation_SteamHumidifier_X",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(Buildings.Fluid.Humidifiers.Validation.SteamHumidifier_X,fileNamePrefix="Buildings_9_Buildings_Fluid_Humidifiers_Validation_SteamHumidifier_X",fmuType="me",version="2.0",platforms={"static"}) Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.007545/0.007545, allocations: 102.3 kB / 15.73 MB, free: 6.062 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001855/0.001855, allocations: 192.3 kB / 16.67 MB, free: 5.973 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.314/1.314, allocations: 222.9 MB / 240.4 MB, free: 15.08 MB / 206.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 9.1.3-maint.9.1.x/package.mo): time 2.13/2.13, allocations: 390.3 MB / 0.6648 GB, free: 0.6445 MB / 0.5294 GB Notification: Performance of FrontEnd - loaded program: time 0.001365/0.001365, allocations: 63.91 kB / 0.9504 GB, free: 8.152 MB / 0.7325 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.7269/0.7283, allocations: 140.4 MB / 1.087 GB, free: 5.281 MB / 0.8575 GB Notification: Performance of NFInst.instantiate(Buildings.Fluid.Humidifiers.Validation.SteamHumidifier_X): time 0.2236/0.9519, allocations: 199 MB / 1.282 GB, free: 6.691 MB / 1.014 GB Notification: Performance of NFInst.instExpressions: time 0.007006/0.959, allocations: 3.744 MB / 1.285 GB, free: 2.934 MB / 1.014 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.001015/0.96, allocations: 27.81 kB / 1.285 GB, free: 2.906 MB / 1.014 GB Notification: Performance of NFTyping.typeComponents: time 0.001398/0.9615, allocations: 433.5 kB / 1.286 GB, free: 2.48 MB / 1.014 GB Notification: Performance of NFTyping.typeBindings: time 0.003912/0.9654, allocations: 1.256 MB / 1.287 GB, free: 1.219 MB / 1.014 GB Notification: Performance of NFTyping.typeClassSections: time 0.00241/0.9678, allocations: 0.7502 MB / 1.288 GB, free: 484 kB / 1.014 GB Notification: Performance of NFFlatten.flatten: time 0.002295/0.9701, allocations: 1.352 MB / 1.289 GB, free: 15.11 MB / 1.029 GB Notification: Performance of NFFlatten.resolveConnections: time 0.001156/0.9713, allocations: 494.6 kB / 1.29 GB, free: 14.62 MB / 1.029 GB Notification: Performance of NFEvalConstants.evaluate: time 0.002667/0.974, allocations: 0.9812 MB / 1.291 GB, free: 13.65 MB / 1.029 GB Notification: Performance of NFSimplifyModel.simplify: time 0.000971/0.975, allocations: 462.1 kB / 1.291 GB, free: 13.2 MB / 1.029 GB Notification: Performance of NFPackage.collectConstants: time 0.0001497/0.9751, allocations: 44 kB / 1.291 GB, free: 13.15 MB / 1.029 GB Notification: Performance of NFFlatten.collectFunctions: time 0.002274/0.9774, allocations: 1.189 MB / 1.292 GB, free: 11.96 MB / 1.029 GB Notification: Performance of NFScalarize.scalarize: time 0.0004015/0.9778, allocations: 195.4 kB / 1.292 GB, free: 11.77 MB / 1.029 GB Notification: Performance of NFVerifyModel.verify: time 0.0005194/0.9784, allocations: 326.2 kB / 1.293 GB, free: 11.45 MB / 1.029 GB Notification: Performance of NFConvertDAE.convert: time 0.00227/0.9806, allocations: 1.196 MB / 1.294 GB, free: 10.25 MB / 1.029 GB Notification: Performance of FrontEnd - DAE generated: time 4.058e-06/0.9807, allocations: 0 / 1.294 GB, free: 10.25 MB / 1.029 GB Notification: Performance of FrontEnd: time 1.413e-06/0.9807, allocations: 0 / 1.294 GB, free: 10.25 MB / 1.029 GB Notification: Performance of Transformations before backend: time 3.057e-05/0.9807, allocations: 0 / 1.294 GB, free: 10.25 MB / 1.029 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 98 * Number of variables: 98 Notification: Performance of Generate backend data structure: time 0.002501/0.9832, allocations: 1.052 MB / 1.295 GB, free: 9.148 MB / 1.029 GB Notification: Performance of prepare preOptimizeDAE: time 4.818e-05/0.9833, allocations: 12.03 kB / 1.295 GB, free: 9.137 MB / 1.029 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.0001139/0.9834, allocations: 78.52 kB / 1.295 GB, free: 9.051 MB / 1.029 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.00144/0.9848, allocations: 215 kB / 1.295 GB, free: 8.84 MB / 1.029 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.001011/0.9859, allocations: 0.5693 MB / 1.296 GB, free: 8.23 MB / 1.029 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 3.822e-05/0.9859, allocations: 32.98 kB / 1.296 GB, free: 8.195 MB / 1.029 GB Notification: Performance of preOpt expandDerOperator (simulation): time 7.616e-05/0.986, allocations: 36 kB / 1.296 GB, free: 8.16 MB / 1.029 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.001075/0.9871, allocations: 0.5349 MB / 1.296 GB, free: 7.605 MB / 1.029 GB Notification: Performance of preOpt findStateOrder (simulation): time 1.418e-05/0.9871, allocations: 0 / 1.296 GB, free: 7.605 MB / 1.029 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 4.738e-05/0.9871, allocations: 19.98 kB / 1.296 GB, free: 7.586 MB / 1.029 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 2.911e-05/0.9872, allocations: 20.98 kB / 1.296 GB, free: 7.566 MB / 1.029 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.001191/0.9884, allocations: 0.4996 MB / 1.297 GB, free: 7.066 MB / 1.029 GB Warning: The model contains alias variables with redundant start and/or conflicting nominal values. It is recommended to resolve the conflicts, because otherwise the system could be hard to solve. To print the conflicting alias sets and the chosen candidates please use -d=aliasConflicts. Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.003346/0.9917, allocations: 2.223 MB / 1.299 GB, free: 4.66 MB / 1.029 GB Notification: Performance of preOpt comSubExp (simulation): time 0.0007491/0.9925, allocations: 355.6 kB / 1.299 GB, free: 4.285 MB / 1.029 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0002291/0.9927, allocations: 147.2 kB / 1.3 GB, free: 4.141 MB / 1.029 GB Notification: Performance of preOpt evalFunc (simulation): time 0.001296/0.994, allocations: 0.8338 MB / 1.3 GB, free: 3.141 MB / 1.029 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.0003092/0.9944, allocations: 188.9 kB / 1.301 GB, free: 2.938 MB / 1.029 GB Notification: Performance of pre-optimization done (n=26): time 1.774e-06/0.9944, allocations: 4 kB / 1.301 GB, free: 2.934 MB / 1.029 GB Notification: Performance of matching and sorting (n=26): time 0.001024/0.9954, allocations: 436.8 kB / 1.301 GB, free: 2.5 MB / 1.029 GB Notification: Performance of inlineWhenForInitialization (initialization): time 6.452e-05/0.9955, allocations: 81.11 kB / 1.301 GB, free: 2.402 MB / 1.029 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0008925/0.9964, allocations: 0.6563 MB / 1.302 GB, free: 1.734 MB / 1.029 GB Notification: Performance of collectPreVariables (initialization): time 3.403e-05/0.9964, allocations: 33.7 kB / 1.302 GB, free: 1.695 MB / 1.029 GB Notification: Performance of collectInitialEqns (initialization): time 0.0002412/0.9967, allocations: 323.7 kB / 1.302 GB, free: 1.375 MB / 1.029 GB Notification: Performance of collectInitialBindings (initialization): time 7.422e-05/0.9968, allocations: 86.75 kB / 1.302 GB, free: 1.289 MB / 1.029 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0001363/0.9969, allocations: 73.69 kB / 1.302 GB, free: 1.211 MB / 1.029 GB Notification: Performance of setup shared object (initialization): time 0.0001498/0.9971, allocations: 374.7 kB / 1.303 GB, free: 0.8359 MB / 1.029 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0003681/0.9974, allocations: 136.8 kB / 1.303 GB, free: 0.6992 MB / 1.029 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0004568/0.9979, allocations: 277 kB / 1.303 GB, free: 376 kB / 1.029 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0006576/0.9986, allocations: 397.9 kB / 1.303 GB, free: 15.93 MB / 1.045 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 5.57e-06/0.9986, allocations: 4 kB / 1.303 GB, free: 15.92 MB / 1.045 GB Notification: Performance of matching and sorting (n=43) (initialization): time 0.001048/0.9996, allocations: 468.7 kB / 1.304 GB, free: 15.46 MB / 1.045 GB Notification: Performance of prepare postOptimizeDAE: time 2.058e-05/0.9997, allocations: 8 kB / 1.304 GB, free: 15.45 MB / 1.045 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.903e-05/0.9997, allocations: 7.938 kB / 1.304 GB, free: 15.44 MB / 1.045 GB Notification: Performance of postOpt tearingSystem (initialization): time 1.758e-05/0.9997, allocations: 7.938 kB / 1.304 GB, free: 15.43 MB / 1.045 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0004065/1, allocations: 83.89 kB / 1.304 GB, free: 15.35 MB / 1.045 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 1.438e-05/1, allocations: 11.98 kB / 1.304 GB, free: 15.34 MB / 1.045 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0005927/1.001, allocations: 83.66 kB / 1.304 GB, free: 15.26 MB / 1.045 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 4.58e-05/1.001, allocations: 23.92 kB / 1.304 GB, free: 15.23 MB / 1.045 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.0005194/1.001, allocations: 296 kB / 1.304 GB, free: 14.94 MB / 1.045 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.0004408/1.002, allocations: 277.7 kB / 1.305 GB, free: 14.61 MB / 1.045 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.0006198/1.002, allocations: 388.7 kB / 1.305 GB, free: 14.18 MB / 1.045 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 2.274e-06/1.002, allocations: 0 / 1.305 GB, free: 14.18 MB / 1.045 GB Notification: Performance of matching and sorting (n=43) (initialization_lambda0): time 0.001001/1.003, allocations: 466.2 kB / 1.305 GB, free: 13.71 MB / 1.045 GB Notification: Performance of prepare postOptimizeDAE: time 1.203e-05/1.003, allocations: 14.38 kB / 1.305 GB, free: 13.7 MB / 1.045 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 5.73e-06/1.003, allocations: 4 kB / 1.305 GB, free: 13.7 MB / 1.045 GB Notification: Performance of postOpt tearingSystem (initialization): time 7.664e-06/1.003, allocations: 8 kB / 1.305 GB, free: 13.69 MB / 1.045 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0003974/1.004, allocations: 91.81 kB / 1.305 GB, free: 13.6 MB / 1.045 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 8.385e-06/1.004, allocations: 7.938 kB / 1.305 GB, free: 13.59 MB / 1.045 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.000556/1.004, allocations: 63.7 kB / 1.306 GB, free: 13.53 MB / 1.045 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 4e-05/1.005, allocations: 20 kB / 1.306 GB, free: 13.51 MB / 1.045 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 18 * Number of states: 0 () * Number of discrete variables: 5 ($PRE.XSet.nextTimeEvent,$whenCondition1,XSet.nextTimeEventScaled,$PRE.XSet.nextTimeEventScaled,XSet.nextTimeEvent) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (43): * Single equations (assignments): 43 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 0 * Mixed (continuous/discrete) equation systems: 0 Notification: Performance of prepare postOptimizeDAE: time 0.0001522/1.005, allocations: 212.7 kB / 1.306 GB, free: 13.3 MB / 1.045 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 8.978e-05/1.005, allocations: 63.23 kB / 1.306 GB, free: 13.23 MB / 1.045 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.0005919/1.005, allocations: 326 kB / 1.306 GB, free: 12.91 MB / 1.045 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 4.339e-06/1.005, allocations: 0 / 1.306 GB, free: 12.91 MB / 1.045 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 8.195e-06/1.005, allocations: 7.938 kB / 1.306 GB, free: 12.9 MB / 1.045 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 4.078e-06/1.005, allocations: 0 / 1.306 GB, free: 12.9 MB / 1.045 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.001493/1.007, allocations: 1.087 MB / 1.307 GB, free: 11.72 MB / 1.045 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 5.451e-06/1.007, allocations: 4 kB / 1.307 GB, free: 11.72 MB / 1.045 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0001945/1.007, allocations: 36.23 kB / 1.307 GB, free: 11.68 MB / 1.045 GB Notification: Performance of postOpt tearingSystem (simulation): time 6.312e-06/1.007, allocations: 8 kB / 1.307 GB, free: 11.68 MB / 1.045 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 2.263e-05/1.007, allocations: 8 kB / 1.307 GB, free: 11.67 MB / 1.045 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 5.74e-06/1.007, allocations: 7.984 kB / 1.307 GB, free: 11.66 MB / 1.045 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 3.367e-06/1.007, allocations: 4 kB / 1.307 GB, free: 11.66 MB / 1.045 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.0005769/1.008, allocations: 474.2 kB / 1.308 GB, free: 11.15 MB / 1.045 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0002073/1.008, allocations: 160.3 kB / 1.308 GB, free: 10.97 MB / 1.045 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 8.097e-05/1.008, allocations: 8 kB / 1.308 GB, free: 10.96 MB / 1.045 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0003332/1.008, allocations: 27.92 kB / 1.308 GB, free: 10.94 MB / 1.045 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 6.059e-05/1.008, allocations: 27.84 kB / 1.308 GB, free: 10.91 MB / 1.045 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 2.505e-05/1.009, allocations: 16.06 kB / 1.308 GB, free: 10.89 MB / 1.045 GB Notification: Performance of sorting global known variables: time 0.0006436/1.009, allocations: 475 kB / 1.308 GB, free: 10.43 MB / 1.045 GB Notification: Performance of sort global known variables: time 2.1e-07/1.009, allocations: 0 / 1.308 GB, free: 10.43 MB / 1.045 GB Notification: Performance of remove unused functions: time 0.0008588/1.01, allocations: 275.6 kB / 1.309 GB, free: 10.16 MB / 1.045 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 11 * Number of states: 0 () * Number of discrete variables: 3 ($whenCondition1,XSet.nextTimeEvent,XSet.nextTimeEventScaled) * Number of discrete states: 2 (XSet.nextTimeEvent,XSet.nextTimeEventScaled) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (25): * Single equations (assignments): 23 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 2 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 0 * Mixed (continuous/discrete) equation systems: 0 Notification: Performance of Backend phase and start with SimCode phase: time 0.002001/1.012, allocations: 1.413 MB / 1.31 GB, free: 8.859 MB / 1.045 GB Notification: Performance of simCode: created initialization part: time 0.001133/1.013, allocations: 0.4966 MB / 1.31 GB, free: 8.363 MB / 1.045 GB Notification: Performance of simCode: created event and clocks part: time 4.117e-06/1.013, allocations: 0 / 1.31 GB, free: 8.363 MB / 1.045 GB Notification: Performance of simCode: created simulation system equations: time 0.0002159/1.013, allocations: 124.6 kB / 1.311 GB, free: 8.242 MB / 1.045 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.001262/1.015, allocations: 288.4 kB / 1.311 GB, free: 7.965 MB / 1.045 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.006701/1.021, allocations: 4.637 MB / 1.315 GB, free: 3.082 MB / 1.045 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0004731/1.022, allocations: 0.8938 MB / 1.316 GB, free: 2.16 MB / 1.045 GB Notification: Performance of simCode: alias equations: time 0.0005554/1.022, allocations: 176.8 kB / 1.316 GB, free: 1.988 MB / 1.045 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0002818/1.023, allocations: 195.4 kB / 1.317 GB, free: 1.801 MB / 1.045 GB Notification: Performance of SimCode: time 2.71e-07/1.023, allocations: 4 kB / 1.317 GB, free: 1.797 MB / 1.045 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.03732/1.06, allocations: 15.81 MB / 1.332 GB, free: 2.203 MB / 1.061 GB Notification: Performance of buildModelFMU: Generate platform static: time 8.568/9.628, allocations: 8.047 kB / 1.332 GB, free: 2.195 MB / 1.061 GB (rm -f Buildings_9_Buildings.Fluid.Humidifiers.Validation.SteamHumidifier_X.pipe ; mkfifo Buildings_9_Buildings.Fluid.Humidifiers.Validation.SteamHumidifier_X.pipe ; head -c 1048576 < Buildings_9_Buildings.Fluid.Humidifiers.Validation.SteamHumidifier_X.pipe >> ../files/Buildings_9_Buildings.Fluid.Humidifiers.Validation.SteamHumidifier_X.sim & python3 -m fmpy simulate --output-file Buildings_9_Buildings.Fluid.Humidifiers.Validation.SteamHumidifier_X_res.csv --start-time 0 --stop-time 1080 --timeout 50 --relative-tolerance 1e-06 --interface-type ModelExchange --solver CVode --output-interval 0.432 Buildings_9_Buildings_Fluid_Humidifiers_Validation_SteamHumidifier_X.fmu > Buildings_9_Buildings.Fluid.Humidifiers.Validation.SteamHumidifier_X.pipe 2>&1) diffSimulationResults("Buildings_9_Buildings.Fluid.Humidifiers.Validation.SteamHumidifier_X_res.csv","/mnt/ReferenceFiles/Buildings/csv/maint_9.1.x/Buildings_Fluid_Humidifiers_Validation_SteamHumidifier_X.csv","/var/lib/jenkins1/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/files/Buildings_9_Buildings.Fluid.Humidifiers.Validation.SteamHumidifier_X.diff",relTol=0.003,relTolDiffMinMax=0.003,rangeDelta=0.001) Reference file matches