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: 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_9_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_9_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 0.001279/0.001279, allocations: 108 kB / 15.61 MB, free: 152 kB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001347/0.001348, allocations: 196.8 kB / 16.53 MB, free: 6.664 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.356/1.356, allocations: 222.9 MB / 240.2 MB, free: 4.391 MB / 190.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 9.1.3-maint.9.1.x/package.mo): time 2.399/2.399, allocations: 390.2 MB / 0.6647 GB, free: 448 kB / 0.5137 GB Notification: Performance of FrontEnd - loaded program: time 0.001302/0.001302, allocations: 67.89 kB / 0.8125 GB, free: 14.46 MB / 0.67 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.6806/0.6819, allocations: 140.4 MB / 0.9496 GB, free: 9.148 MB / 0.7169 GB Notification: Performance of NFInst.instantiate(Buildings.Fluid.Humidifiers.Validation.SteamHumidifier_X): time 0.2159/0.8978, allocations: 199 MB / 1.144 GB, free: 10.17 MB / 0.9044 GB Notification: Performance of NFInst.instExpressions: time 0.006737/0.9046, allocations: 3.757 MB / 1.148 GB, free: 6.402 MB / 0.9044 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.0006763/0.9053, allocations: 27.81 kB / 1.148 GB, free: 6.375 MB / 0.9044 GB Notification: Performance of NFTyping.typeComponents: time 0.001131/0.9065, allocations: 437.5 kB / 1.148 GB, free: 5.945 MB / 0.9044 GB Notification: Performance of NFTyping.typeBindings: time 0.00324/0.9098, allocations: 1.241 MB / 1.149 GB, free: 4.699 MB / 0.9044 GB Notification: Performance of NFTyping.typeClassSections: time 0.002119/0.9119, allocations: 0.7492 MB / 1.15 GB, free: 3.953 MB / 0.9044 GB Notification: Performance of NFFlatten.flatten: time 0.001632/0.9135, allocations: 1.352 MB / 1.151 GB, free: 2.594 MB / 0.9044 GB Notification: Performance of NFFlatten.resolveConnections: time 0.0006623/0.9142, allocations: 494.7 kB / 1.152 GB, free: 2.109 MB / 0.9044 GB Notification: Performance of NFEvalConstants.evaluate: time 0.002446/0.9167, allocations: 0.9713 MB / 1.153 GB, free: 1.141 MB / 0.9044 GB Notification: Performance of NFSimplifyModel.simplify: time 0.0005864/0.9173, allocations: 462.1 kB / 1.153 GB, free: 0.6875 MB / 0.9044 GB Notification: Performance of NFPackage.collectConstants: time 7.565e-05/0.9174, allocations: 44 kB / 1.153 GB, free: 0.6445 MB / 0.9044 GB Notification: Performance of NFFlatten.collectFunctions: time 0.002137/0.9195, allocations: 1.185 MB / 1.154 GB, free: 15.46 MB / 0.92 GB Notification: Performance of NFScalarize.scalarize: time 0.0002005/0.9197, allocations: 195.4 kB / 1.155 GB, free: 15.27 MB / 0.92 GB Notification: Performance of NFVerifyModel.verify: time 0.0003315/0.9201, allocations: 330.2 kB / 1.155 GB, free: 14.94 MB / 0.92 GB Notification: Performance of NFConvertDAE.convert: time 0.001754/0.9218, allocations: 1.18 MB / 1.156 GB, free: 13.76 MB / 0.92 GB Notification: Performance of FrontEnd - DAE generated: time 5.119e-06/0.9218, allocations: 4 kB / 1.156 GB, free: 13.75 MB / 0.92 GB Notification: Performance of FrontEnd: time 1.794e-06/0.9218, allocations: 0 / 1.156 GB, free: 13.75 MB / 0.92 GB Notification: Performance of Transformations before backend: time 1.392e-05/0.9219, allocations: 0 / 1.156 GB, free: 13.75 MB / 0.92 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 0.002148/0.924, allocations: 1.044 MB / 1.157 GB, free: 12.66 MB / 0.92 GB Notification: Performance of prepare preOptimizeDAE: time 5.03e-05/0.9241, allocations: 8.031 kB / 1.157 GB, free: 12.65 MB / 0.92 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.001313/0.9254, allocations: 230.8 kB / 1.157 GB, free: 12.43 MB / 0.92 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.0007148/0.9261, allocations: 0.5304 MB / 1.158 GB, free: 11.86 MB / 0.92 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 3.66e-05/0.9262, allocations: 29 kB / 1.158 GB, free: 11.82 MB / 0.92 GB Notification: Performance of preOpt expandDerOperator (simulation): time 6.441e-05/0.9262, allocations: 40 kB / 1.158 GB, free: 11.79 MB / 0.92 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.001084/0.9273, allocations: 0.5387 MB / 1.158 GB, free: 11.23 MB / 0.92 GB Notification: Performance of preOpt findStateOrder (simulation): time 1.508e-05/0.9274, allocations: 0 / 1.158 GB, free: 11.23 MB / 0.92 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 4.947e-05/0.9274, allocations: 19.94 kB / 1.158 GB, free: 11.21 MB / 0.92 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 2.944e-05/0.9274, allocations: 20.98 kB / 1.158 GB, free: 11.19 MB / 0.92 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.001214/0.9287, allocations: 0.5035 MB / 1.159 GB, free: 10.68 MB / 0.92 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 0.003121/0.9318, allocations: 2.238 MB / 1.161 GB, free: 8.258 MB / 0.92 GB Notification: Performance of preOpt comSubExp (simulation): time 0.0007446/0.9326, allocations: 344.9 kB / 1.161 GB, free: 7.895 MB / 0.92 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0002232/0.9328, allocations: 148.7 kB / 1.162 GB, free: 7.746 MB / 0.92 GB Notification: Performance of preOpt evalFunc (simulation): time 0.001286/0.9341, allocations: 0.8376 MB / 1.162 GB, free: 6.742 MB / 0.92 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.0003082/0.9344, allocations: 194.9 kB / 1.163 GB, free: 6.535 MB / 0.92 GB Notification: Performance of pre-optimization done (n=26): time 1.553e-06/0.9344, allocations: 3.938 kB / 1.163 GB, free: 6.531 MB / 0.92 GB Notification: Performance of matching and sorting (n=26): time 0.0009521/0.9354, allocations: 438.7 kB / 1.163 GB, free: 6.098 MB / 0.92 GB Notification: Performance of inlineWhenForInitialization (initialization): time 5.068e-05/0.9354, allocations: 81.11 kB / 1.163 GB, free: 6 MB / 0.92 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0008138/0.9363, allocations: 0.6525 MB / 1.164 GB, free: 5.336 MB / 0.92 GB Notification: Performance of collectPreVariables (initialization): time 3.173e-05/0.9363, allocations: 33.7 kB / 1.164 GB, free: 5.297 MB / 0.92 GB Notification: Performance of collectInitialEqns (initialization): time 0.0002393/0.9365, allocations: 315.8 kB / 1.164 GB, free: 4.984 MB / 0.92 GB Notification: Performance of collectInitialBindings (initialization): time 6.659e-05/0.9366, allocations: 90.73 kB / 1.164 GB, free: 4.895 MB / 0.92 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.000132/0.9368, allocations: 77.59 kB / 1.164 GB, free: 4.812 MB / 0.92 GB Notification: Performance of setup shared object (initialization): time 0.0001388/0.9369, allocations: 378.7 kB / 1.165 GB, free: 4.434 MB / 0.92 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0003618/0.9373, allocations: 136.8 kB / 1.165 GB, free: 4.297 MB / 0.92 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0004468/0.9377, allocations: 281 kB / 1.165 GB, free: 3.961 MB / 0.92 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0006206/0.9384, allocations: 385 kB / 1.165 GB, free: 3.531 MB / 0.92 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 4.619e-06/0.9384, allocations: 4.062 kB / 1.165 GB, free: 3.527 MB / 0.92 GB Notification: Performance of matching and sorting (n=43) (initialization): time 0.0009722/0.9393, allocations: 481.4 kB / 1.166 GB, free: 3.051 MB / 0.92 GB Notification: Performance of prepare postOptimizeDAE: time 1.652e-05/0.9394, allocations: 4 kB / 1.166 GB, free: 3.047 MB / 0.92 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 8.015e-06/0.9394, allocations: 4 kB / 1.166 GB, free: 3.043 MB / 0.92 GB Notification: Performance of postOpt tearingSystem (initialization): time 1.905e-05/0.9394, allocations: 8.281 kB / 1.166 GB, free: 3.035 MB / 0.92 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0004086/0.9398, allocations: 84.05 kB / 1.166 GB, free: 2.953 MB / 0.92 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 1.155e-05/0.9398, allocations: 15.94 kB / 1.166 GB, free: 2.938 MB / 0.92 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0005638/0.9404, allocations: 75.42 kB / 1.166 GB, free: 2.863 MB / 0.92 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 3.833e-05/0.9405, allocations: 24 kB / 1.166 GB, free: 2.84 MB / 0.92 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.0005048/0.941, allocations: 292 kB / 1.166 GB, free: 2.551 MB / 0.92 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.0004448/0.9414, allocations: 281.7 kB / 1.167 GB, free: 2.215 MB / 0.92 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.0006069/0.942, allocations: 386.3 kB / 1.167 GB, free: 1.785 MB / 0.92 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 1.964e-06/0.9421, allocations: 0 / 1.167 GB, free: 1.785 MB / 0.92 GB Notification: Performance of matching and sorting (n=43) (initialization_lambda0): time 0.0009655/0.943, allocations: 472.6 kB / 1.167 GB, free: 1.316 MB / 0.92 GB Notification: Performance of prepare postOptimizeDAE: time 9.689e-06/0.943, allocations: 11.94 kB / 1.167 GB, free: 1.305 MB / 0.92 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 5.11e-06/0.9431, allocations: 4 kB / 1.167 GB, free: 1.301 MB / 0.92 GB Notification: Performance of postOpt tearingSystem (initialization): time 5.721e-06/0.9431, allocations: 7.938 kB / 1.167 GB, free: 1.293 MB / 0.92 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0003948/0.9435, allocations: 87.89 kB / 1.167 GB, free: 1.207 MB / 0.92 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 8.235e-06/0.9435, allocations: 8.094 kB / 1.167 GB, free: 1.199 MB / 0.92 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0005573/0.9441, allocations: 63.73 kB / 1.168 GB, free: 1.137 MB / 0.92 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 3.909e-05/0.9441, allocations: 23.98 kB / 1.168 GB, free: 1.113 MB / 0.92 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 0.000145/0.9443, allocations: 208.1 kB / 1.168 GB, free: 0.9023 MB / 0.92 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 7.984e-05/0.9443, allocations: 59.25 kB / 1.168 GB, free: 0.8438 MB / 0.92 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.000602/0.9449, allocations: 320.7 kB / 1.168 GB, free: 0.5156 MB / 0.92 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 7.805e-06/0.945, allocations: 11.92 kB / 1.168 GB, free: 0.5039 MB / 0.92 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 5.36e-06/0.945, allocations: 0 / 1.168 GB, free: 0.5039 MB / 0.92 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 5.851e-06/0.945, allocations: 3.938 kB / 1.168 GB, free: 0.5 MB / 0.92 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.0014/0.9464, allocations: 1.088 MB / 1.169 GB, free: 15.32 MB / 0.9356 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 2.665e-06/0.9464, allocations: 0 / 1.169 GB, free: 15.32 MB / 0.9356 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0001877/0.9466, allocations: 39.92 kB / 1.169 GB, free: 15.28 MB / 0.9356 GB Notification: Performance of postOpt tearingSystem (simulation): time 4.599e-06/0.9466, allocations: 4 kB / 1.169 GB, free: 15.28 MB / 0.9356 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 2.107e-05/0.9466, allocations: 8 kB / 1.169 GB, free: 15.27 MB / 0.9356 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 3.887e-06/0.9466, allocations: 4 kB / 1.169 GB, free: 15.27 MB / 0.9356 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 8.145e-06/0.9467, allocations: 12 kB / 1.169 GB, free: 15.25 MB / 0.9356 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.0005472/0.9472, allocations: 477.1 kB / 1.17 GB, free: 14.74 MB / 0.9356 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0001606/0.9474, allocations: 164.2 kB / 1.17 GB, free: 14.56 MB / 0.9356 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 7.953e-05/0.9475, allocations: 11.98 kB / 1.17 GB, free: 14.55 MB / 0.9356 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0003321/0.9478, allocations: 19.98 kB / 1.17 GB, free: 14.53 MB / 0.9356 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 5.968e-05/0.9479, allocations: 19.92 kB / 1.17 GB, free: 14.51 MB / 0.9356 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 2.039e-05/0.9479, allocations: 12 kB / 1.17 GB, free: 14.5 MB / 0.9356 GB Notification: Performance of sorting global known variables: time 0.0006354/0.9485, allocations: 479 kB / 1.17 GB, free: 14.04 MB / 0.9356 GB Notification: Performance of sort global known variables: time 2.11e-07/0.9485, allocations: 0 / 1.17 GB, free: 14.04 MB / 0.9356 GB Notification: Performance of remove unused functions: time 0.000811/0.9494, allocations: 259.7 kB / 1.171 GB, free: 13.78 MB / 0.9356 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 0.001245/0.9506, allocations: 0.5235 MB / 1.171 GB, free: 13.42 MB / 0.9356 GB Notification: Performance of simCode: created initialization part: time 0.001143/0.9518, allocations: 0.5151 MB / 1.172 GB, free: 12.91 MB / 0.9356 GB Notification: Performance of simCode: created event and clocks part: time 2.565e-06/0.9518, allocations: 0 / 1.172 GB, free: 12.91 MB / 0.9356 GB Notification: Performance of simCode: created simulation system equations: time 0.0002065/0.952, allocations: 121 kB / 1.172 GB, free: 12.79 MB / 0.9356 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.001296/0.9533, allocations: 278 kB / 1.172 GB, free: 12.52 MB / 0.9356 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.001666/0.955, allocations: 1.038 MB / 1.173 GB, free: 11.43 MB / 0.9356 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0004281/0.9554, allocations: 0.8938 MB / 1.174 GB, free: 10.5 MB / 0.9356 GB Notification: Performance of simCode: alias equations: time 0.0006316/0.9561, allocations: 164.8 kB / 1.174 GB, free: 10.34 MB / 0.9356 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0001138/0.9562, allocations: 47.38 kB / 1.174 GB, free: 10.3 MB / 0.9356 GB Notification: Performance of SimCode: time 3.61e-07/0.9562, allocations: 0 / 1.174 GB, free: 10.3 MB / 0.9356 GB Notification: Performance of Templates: time 0.01714/0.9733, allocations: 10.4 MB / 1.184 GB, free: 48 kB / 0.9356 GB make -j1 -f Buildings_9_Buildings.Fluid.Humidifiers.Validation.SteamHumidifier_X.makefile (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 & ./Buildings_9_Buildings.Fluid.Humidifiers.Validation.SteamHumidifier_X -abortSlowSimulation -alarm=480 -emit_protected -lv LOG_STATS > Buildings_9_Buildings.Fluid.Humidifiers.Validation.SteamHumidifier_X.pipe 2>&1) diffSimulationResults("Buildings_9_Buildings.Fluid.Humidifiers.Validation.SteamHumidifier_X_res.mat","/mnt/ReferenceFiles/Buildings/csv/maint_9.1.x/Buildings_Fluid_Humidifiers_Validation_SteamHumidifier_X.csv","/var/lib/jenkins/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