Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_latest_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 11.0.1-master/package.mo", uses=false) Using package Buildings with version 11.0.1 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 11.0.1-master/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: translateModel(Buildings.Fluid.Humidifiers.Validation.SteamHumidifier_X,tolerance=1e-06,outputFormat="mat",numberOfIntervals=5000,variableFilter="time|XSet.y.1.|senHum.X|hum.sta_a.T|hum.sta_b.T|hum.mWat_flow",fileNamePrefix="Buildings_latest_Buildings.Fluid.Humidifiers.Validation.SteamHumidifier_X") translateModel(Buildings.Fluid.Humidifiers.Validation.SteamHumidifier_X,tolerance=1e-06,outputFormat="mat",numberOfIntervals=5000,variableFilter="time|XSet.y.1.|senHum.X|hum.sta_a.T|hum.sta_b.T|hum.mWat_flow",fileNamePrefix="Buildings_latest_Buildings.Fluid.Humidifiers.Validation.SteamHumidifier_X") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.00147/0.00147, allocations: 111.3 kB / 15.23 MB, free: 0.6602 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001718/0.001718, allocations: 192 kB / 16.14 MB, free: 6.645 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.373/1.373, allocations: 222.9 MB / 239.8 MB, free: 4.582 MB / 190.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 11.0.1-master/package.mo): time 2.904/2.904, allocations: 461.9 MB / 0.7342 GB, free: 15.06 MB / 0.5919 GB Notification: Performance of FrontEnd - loaded program: time 0.001438/0.001439, allocations: 65.52 kB / 0.8984 GB, free: 37.25 MB / 0.7169 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.3716/0.3731, allocations: 157.4 MB / 1.052 GB, free: 8.902 MB / 0.8106 GB Notification: Performance of NFInst.instantiate(Buildings.Fluid.Humidifiers.Validation.SteamHumidifier_X): time 0.2315/0.6047, allocations: 196.8 MB / 1.244 GB, free: 3.398 MB / 0.9981 GB Notification: Performance of NFInst.instExpressions: time 0.7528/1.358, allocations: 3.777 MB / 1.248 GB, free: 20.86 MB / 0.9981 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.001205/1.359, allocations: 26.53 kB / 1.248 GB, free: 20.86 MB / 0.9981 GB Notification: Performance of NFTyping.typeComponents: time 0.001488/1.36, allocations: 379 kB / 1.248 GB, free: 20.86 MB / 0.9981 GB Notification: Performance of NFTyping.typeBindings: time 0.004576/1.365, allocations: 1.167 MB / 1.249 GB, free: 20.86 MB / 0.9981 GB Notification: Performance of NFTyping.typeClassSections: time 0.002503/1.367, allocations: 0.6679 MB / 1.25 GB, free: 20.86 MB / 0.9981 GB Notification: Performance of NFFlatten.flatten: time 0.003311/1.371, allocations: 1.831 MB / 1.252 GB, free: 20.86 MB / 0.9981 GB Notification: Performance of NFFlatten.resolveConnections: time 0.0009846/1.372, allocations: 443.8 kB / 1.252 GB, free: 20.83 MB / 0.9981 GB Notification: Performance of NFEvalConstants.evaluate: time 0.003359/1.375, allocations: 0.8908 MB / 1.253 GB, free: 20.82 MB / 0.9981 GB Notification: Performance of NFSimplifyModel.simplify: time 0.001171/1.376, allocations: 476 kB / 1.254 GB, free: 20.82 MB / 0.9981 GB Notification: Performance of NFPackage.collectConstants: time 8.973e-05/1.376, allocations: 28.81 kB / 1.254 GB, free: 20.81 MB / 0.9981 GB Notification: Performance of NFFlatten.collectFunctions: time 0.003454/1.38, allocations: 1.323 MB / 1.255 GB, free: 20.8 MB / 0.9981 GB Notification: Performance of NFScalarize.scalarize: time 0.0004219/1.38, allocations: 184.3 kB / 1.255 GB, free: 20.8 MB / 0.9981 GB Notification: Performance of NFVerifyModel.verify: time 0.0006845/1.381, allocations: 305 kB / 1.255 GB, free: 20.8 MB / 0.9981 GB Notification: Performance of NFConvertDAE.convert: time 0.003277/1.384, allocations: 1.229 MB / 1.257 GB, free: 20.72 MB / 0.9981 GB Notification: Performance of FrontEnd - DAE generated: time 6.702e-06/1.384, allocations: 0.7969 kB / 1.257 GB, free: 20.72 MB / 0.9981 GB Notification: Performance of FrontEnd: time 1.482e-06/1.384, allocations: 0 / 1.257 GB, free: 20.72 MB / 0.9981 GB Notification: Performance of Transformations before backend: time 8.727e-06/1.384, allocations: 0 / 1.257 GB, free: 20.72 MB / 0.9981 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 0.002385/1.387, allocations: 1.049 MB / 1.258 GB, free: 20.07 MB / 0.9981 GB Notification: Performance of prepare preOptimizeDAE: time 4.868e-05/1.387, allocations: 8.891 kB / 1.258 GB, free: 20.07 MB / 0.9981 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.001469/1.388, allocations: 218.9 kB / 1.258 GB, free: 20.02 MB / 0.9981 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.0009576/1.389, allocations: 0.5349 MB / 1.258 GB, free: 19.74 MB / 0.9981 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 3.352e-05/1.389, allocations: 30.12 kB / 1.258 GB, free: 19.74 MB / 0.9981 GB Notification: Performance of preOpt expandDerOperator (simulation): time 6.548e-05/1.389, allocations: 43.16 kB / 1.258 GB, free: 19.74 MB / 0.9981 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.001154/1.391, allocations: 0.5409 MB / 1.259 GB, free: 19.67 MB / 0.9981 GB Notification: Performance of preOpt findStateOrder (simulation): time 1.945e-05/1.391, allocations: 5.828 kB / 1.259 GB, free: 19.67 MB / 0.9981 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 4.888e-05/1.391, allocations: 14.09 kB / 1.259 GB, free: 19.67 MB / 0.9981 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 3.612e-05/1.391, allocations: 21.23 kB / 1.259 GB, free: 19.67 MB / 0.9981 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.001186/1.392, allocations: 0.5058 MB / 1.26 GB, free: 19.66 MB / 0.9981 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 0.003542/1.395, allocations: 2.222 MB / 1.262 GB, free: 18.43 MB / 0.9981 GB Notification: Performance of preOpt comSubExp (simulation): time 0.0007885/1.396, allocations: 354.3 kB / 1.262 GB, free: 18.31 MB / 0.9981 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0002273/1.396, allocations: 135.1 kB / 1.262 GB, free: 18.3 MB / 0.9981 GB Notification: Performance of preOpt evalFunc (simulation): time 0.001257/1.398, allocations: 0.8422 MB / 1.263 GB, free: 17.45 MB / 0.9981 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.0003403/1.398, allocations: 193.4 kB / 1.263 GB, free: 17.39 MB / 0.9981 GB Notification: Performance of pre-optimization done (n=26): time 1.803e-06/1.398, allocations: 0 / 1.263 GB, free: 17.39 MB / 0.9981 GB Notification: Performance of matching and sorting (n=26): time 0.001118/1.399, allocations: 435.7 kB / 1.264 GB, free: 17.32 MB / 0.9981 GB Notification: Performance of inlineWhenForInitialization (initialization): time 4.192e-05/1.399, allocations: 89.14 kB / 1.264 GB, free: 17.22 MB / 0.9981 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.001127/1.4, allocations: 0.6473 MB / 1.264 GB, free: 17.1 MB / 0.9981 GB Notification: Performance of collectPreVariables (initialization): time 4.196e-05/1.4, allocations: 33.06 kB / 1.264 GB, free: 17.07 MB / 0.9981 GB Notification: Performance of collectInitialEqns (initialization): time 0.0002555/1.401, allocations: 320.6 kB / 1.265 GB, free: 16.92 MB / 0.9981 GB Notification: Performance of collectInitialBindings (initialization): time 8.588e-05/1.401, allocations: 89.08 kB / 1.265 GB, free: 16.87 MB / 0.9981 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0001645/1.401, allocations: 84.67 kB / 1.265 GB, free: 16.84 MB / 0.9981 GB Notification: Performance of setup shared object (initialization): time 0.000123/1.401, allocations: 368 kB / 1.265 GB, free: 16.53 MB / 0.9981 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.000391/1.402, allocations: 135.5 kB / 1.265 GB, free: 16.52 MB / 0.9981 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0004917/1.402, allocations: 284 kB / 1.266 GB, free: 16.36 MB / 0.9981 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0006837/1.403, allocations: 380.8 kB / 1.266 GB, free: 16.21 MB / 0.9981 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 6.232e-06/1.403, allocations: 5.531 kB / 1.266 GB, free: 16.2 MB / 0.9981 GB Notification: Performance of matching and sorting (n=43) (initialization): time 0.001266/1.404, allocations: 477.4 kB / 1.266 GB, free: 16.13 MB / 0.9981 GB Notification: Performance of prepare postOptimizeDAE: time 2.841e-05/1.404, allocations: 10.47 kB / 1.266 GB, free: 16.13 MB / 0.9981 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.391e-05/1.404, allocations: 6.375 kB / 1.266 GB, free: 16.13 MB / 0.9981 GB Notification: Performance of postOpt tearingSystem (initialization): time 3.521e-05/1.404, allocations: 7.234 kB / 1.266 GB, free: 16.13 MB / 0.9981 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0004881/1.405, allocations: 87.11 kB / 1.267 GB, free: 16.12 MB / 0.9981 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 1.903e-05/1.405, allocations: 8.078 kB / 1.267 GB, free: 16.12 MB / 0.9981 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0007581/1.405, allocations: 83.78 kB / 1.267 GB, free: 16.1 MB / 0.9981 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 5.609e-05/1.405, allocations: 20.52 kB / 1.267 GB, free: 16.1 MB / 0.9981 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.0006528/1.406, allocations: 291.4 kB / 1.267 GB, free: 16.02 MB / 0.9981 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.0004981/1.407, allocations: 279.3 kB / 1.267 GB, free: 15.85 MB / 0.9981 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.0006427/1.407, allocations: 391.2 kB / 1.268 GB, free: 15.7 MB / 0.9981 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 5.47e-06/1.407, allocations: 6.156 kB / 1.268 GB, free: 15.7 MB / 0.9981 GB Notification: Performance of matching and sorting (n=43) (initialization_lambda0): time 0.001081/1.408, allocations: 473 kB / 1.268 GB, free: 15.62 MB / 0.9981 GB Notification: Performance of prepare postOptimizeDAE: time 1.366e-05/1.408, allocations: 6.656 kB / 1.268 GB, free: 15.62 MB / 0.9981 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 8.636e-06/1.408, allocations: 8.766 kB / 1.268 GB, free: 15.62 MB / 0.9981 GB Notification: Performance of postOpt tearingSystem (initialization): time 1.301e-05/1.408, allocations: 6.188 kB / 1.268 GB, free: 15.62 MB / 0.9981 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0004182/1.409, allocations: 87.78 kB / 1.268 GB, free: 15.62 MB / 0.9981 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 1.095e-05/1.409, allocations: 7.125 kB / 1.268 GB, free: 15.62 MB / 0.9981 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0006904/1.41, allocations: 71.97 kB / 1.268 GB, free: 15.6 MB / 0.9981 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 4.484e-05/1.41, allocations: 20.52 kB / 1.268 GB, free: 15.6 MB / 0.9981 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 0.00018/1.41, allocations: 210.1 kB / 1.268 GB, free: 15.42 MB / 0.9981 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.000103/1.41, allocations: 61.2 kB / 1.268 GB, free: 15.39 MB / 0.9981 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.0007105/1.411, allocations: 328.1 kB / 1.269 GB, free: 15.32 MB / 0.9981 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 8.326e-06/1.411, allocations: 4.703 kB / 1.269 GB, free: 15.32 MB / 0.9981 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 7.113e-06/1.411, allocations: 0.6875 kB / 1.269 GB, free: 15.32 MB / 0.9981 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 6.893e-06/1.411, allocations: 2.109 kB / 1.269 GB, free: 15.32 MB / 0.9981 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.001747/1.412, allocations: 1.083 MB / 1.27 GB, free: 14.86 MB / 0.9981 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 6.852e-06/1.412, allocations: 6.219 kB / 1.27 GB, free: 14.85 MB / 0.9981 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0002008/1.413, allocations: 38.23 kB / 1.27 GB, free: 14.85 MB / 0.9981 GB Notification: Performance of postOpt tearingSystem (simulation): time 6.462e-06/1.413, allocations: 3.844 kB / 1.27 GB, free: 14.85 MB / 0.9981 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 2.914e-05/1.413, allocations: 10.17 kB / 1.27 GB, free: 14.85 MB / 0.9981 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 1.092e-05/1.413, allocations: 12.36 kB / 1.27 GB, free: 14.85 MB / 0.9981 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 6.593e-06/1.413, allocations: 4.266 kB / 1.27 GB, free: 14.85 MB / 0.9981 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.0006385/1.413, allocations: 473.2 kB / 1.27 GB, free: 14.61 MB / 0.9981 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0002049/1.414, allocations: 162.9 kB / 1.271 GB, free: 14.47 MB / 0.9981 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 8.671e-05/1.414, allocations: 13.94 kB / 1.271 GB, free: 14.47 MB / 0.9981 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0003818/1.414, allocations: 24.92 kB / 1.271 GB, free: 14.47 MB / 0.9981 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 9.1e-05/1.414, allocations: 26.61 kB / 1.271 GB, free: 14.46 MB / 0.9981 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 3.391e-05/1.414, allocations: 13.58 kB / 1.271 GB, free: 14.46 MB / 0.9981 GB Notification: Performance of sorting global known variables: time 0.0009667/1.415, allocations: 474.9 kB / 1.271 GB, free: 14.37 MB / 0.9981 GB Notification: Performance of sort global known variables: time 1.412e-06/1.415, allocations: 0 / 1.271 GB, free: 14.37 MB / 0.9981 GB Notification: Performance of remove unused functions: time 0.001345/1.417, allocations: 272.5 kB / 1.271 GB, free: 14.34 MB / 0.9981 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 0.001401/1.418, allocations: 0.5109 MB / 1.272 GB, free: 14.16 MB / 0.9981 GB Notification: Performance of simCode: created initialization part: time 0.001576/1.42, allocations: 0.4965 MB / 1.272 GB, free: 14.15 MB / 0.9981 GB Notification: Performance of simCode: created event and clocks part: time 4.238e-06/1.42, allocations: 1.156 kB / 1.272 GB, free: 14.15 MB / 0.9981 GB Notification: Performance of simCode: created simulation system equations: time 0.0002523/1.42, allocations: 130.5 kB / 1.272 GB, free: 14.14 MB / 0.9981 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.001466/1.421, allocations: 267.6 kB / 1.273 GB, free: 14.13 MB / 0.9981 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.00209/1.423, allocations: 1.209 MB / 1.274 GB, free: 13.45 MB / 0.9981 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0004288/1.424, allocations: 0.8953 MB / 1.275 GB, free: 12.75 MB / 0.9981 GB Notification: Performance of simCode: alias equations: time 0.0008415/1.425, allocations: 170.4 kB / 1.275 GB, free: 12.71 MB / 0.9981 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.00014/1.425, allocations: 44.78 kB / 1.275 GB, free: 12.7 MB / 0.9981 GB Notification: Performance of SimCode: time 7.71e-07/1.425, allocations: 5.5 kB / 1.275 GB, free: 12.7 MB / 0.9981 GB Notification: Performance of Templates: time 0.02348/1.448, allocations: 10.04 MB / 1.285 GB, free: 12.07 MB / 0.9981 GB make -j1 -f Buildings_latest_Buildings.Fluid.Humidifiers.Validation.SteamHumidifier_X.makefile (rm -f Buildings_latest_Buildings.Fluid.Humidifiers.Validation.SteamHumidifier_X.pipe ; mkfifo Buildings_latest_Buildings.Fluid.Humidifiers.Validation.SteamHumidifier_X.pipe ; head -c 1048576 < Buildings_latest_Buildings.Fluid.Humidifiers.Validation.SteamHumidifier_X.pipe >> ../files/Buildings_latest_Buildings.Fluid.Humidifiers.Validation.SteamHumidifier_X.sim & ./Buildings_latest_Buildings.Fluid.Humidifiers.Validation.SteamHumidifier_X -abortSlowSimulation -alarm=480 -emit_protected -lv LOG_STATS > Buildings_latest_Buildings.Fluid.Humidifiers.Validation.SteamHumidifier_X.pipe 2>&1) diffSimulationResults("Buildings_latest_Buildings.Fluid.Humidifiers.Validation.SteamHumidifier_X_res.mat","/mnt/ReferenceFiles/Buildings/csv/master/Buildings_Fluid_Humidifiers_Validation_SteamHumidifier_X.csv","/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/files/Buildings_latest_Buildings.Fluid.Humidifiers.Validation.SteamHumidifier_X.diff",relTol=0.003,relTolDiffMinMax=0.003,rangeDelta=0.001) Reference file matches