Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_9_Buildings.Fluid.Movers.Validation.PumpCurveConstruction.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.Movers.Validation.PumpCurveConstruction,fileNamePrefix="Buildings_9_Buildings_Fluid_Movers_Validation_PumpCurveConstruction",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(Buildings.Fluid.Movers.Validation.PumpCurveConstruction,fileNamePrefix="Buildings_9_Buildings_Fluid_Movers_Validation_PumpCurveConstruction",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 0.006006/0.006006, allocations: 101.8 kB / 15.73 MB, free: 6.035 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001418/0.001418, allocations: 196.1 kB / 16.68 MB, free: 5.957 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.29/1.29, allocations: 222.9 MB / 240.4 MB, free: 15.14 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 2.069/2.069, allocations: 390.3 MB / 0.6648 GB, free: 0.6172 MB / 0.5294 GB Notification: Performance of FrontEnd - loaded program: time 0.001378/0.001378, allocations: 67.91 kB / 0.9504 GB, free: 8.156 MB / 0.7325 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.8367/0.8381, allocations: 140.4 MB / 1.087 GB, free: 5.277 MB / 0.8575 GB Notification: Performance of NFInst.instantiate(Buildings.Fluid.Movers.Validation.PumpCurveConstruction): time 0.1062/0.9443, allocations: 102.6 MB / 1.188 GB, free: 11.68 MB / 0.9356 GB Notification: Performance of NFInst.instExpressions: time 0.04834/0.9927, allocations: 32.44 MB / 1.219 GB, free: 1.285 MB / 0.9512 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.009138/1.002, allocations: 155 kB / 1.22 GB, free: 1.23 MB / 0.9512 GB Notification: Performance of NFTyping.typeComponents: time 0.006754/1.009, allocations: 1.982 MB / 1.221 GB, free: 15.58 MB / 0.9669 GB Notification: Performance of NFTyping.typeBindings: time 0.0148/1.024, allocations: 4.931 MB / 1.226 GB, free: 11.64 MB / 0.9669 GB Notification: Performance of NFTyping.typeClassSections: time 0.01038/1.034, allocations: 3.827 MB / 1.23 GB, free: 8.758 MB / 0.9669 GB Notification: Performance of NFFlatten.flatten: time 0.01535/1.049, allocations: 9.407 MB / 1.239 GB, free: 2.578 MB / 0.9669 GB Notification: Performance of NFFlatten.resolveConnections: time 0.006478/1.056, allocations: 3.495 MB / 1.243 GB, free: 15.02 MB / 0.9825 GB Notification: Performance of NFEvalConstants.evaluate: time 0.009525/1.065, allocations: 4.064 MB / 1.247 GB, free: 10.95 MB / 0.9825 GB Notification: Performance of NFSimplifyModel.simplify: time 0.005531/1.071, allocations: 2.976 MB / 1.249 GB, free: 7.961 MB / 0.9825 GB Notification: Performance of NFPackage.collectConstants: time 0.001576/1.073, allocations: 392 kB / 1.25 GB, free: 7.578 MB / 0.9825 GB Notification: Performance of NFFlatten.collectFunctions: time 0.006867/1.079, allocations: 2.562 MB / 1.252 GB, free: 5.012 MB / 0.9825 GB Notification: Performance of NFScalarize.scalarize: time 0.001994/1.081, allocations: 1.242 MB / 1.254 GB, free: 3.766 MB / 0.9825 GB Notification: Performance of NFVerifyModel.verify: time 0.004501/1.086, allocations: 2.254 MB / 1.256 GB, free: 1.5 MB / 0.9825 GB Notification: Performance of NFConvertDAE.convert: time 0.01271/1.099, allocations: 6.921 MB / 1.263 GB, free: 10.56 MB / 0.9981 GB Notification: Performance of FrontEnd - DAE generated: time 5.129e-06/1.099, allocations: 3.938 kB / 1.263 GB, free: 10.55 MB / 0.9981 GB Notification: Performance of FrontEnd: time 1.683e-06/1.099, allocations: 3.938 kB / 1.263 GB, free: 10.55 MB / 0.9981 GB Notification: Performance of Transformations before backend: time 0.0002292/1.099, allocations: 0 / 1.263 GB, free: 10.55 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: 525 * Number of variables: 525 Notification: Performance of Generate backend data structure: time 0.0114/1.11, allocations: 4.798 MB / 1.267 GB, free: 5.676 MB / 0.9981 GB Notification: Performance of prepare preOptimizeDAE: time 4.573e-05/1.11, allocations: 8.031 kB / 1.267 GB, free: 5.668 MB / 0.9981 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.0006777/1.111, allocations: 287.5 kB / 1.268 GB, free: 5.375 MB / 0.9981 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.008698/1.12, allocations: 1.498 MB / 1.269 GB, free: 3.871 MB / 0.9981 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.01138/1.131, allocations: 4.076 MB / 1.273 GB, free: 15.73 MB / 1.014 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0002488/1.132, allocations: 176.1 kB / 1.273 GB, free: 15.55 MB / 1.014 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0008826/1.132, allocations: 228 kB / 1.273 GB, free: 15.33 MB / 1.014 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.007131/1.14, allocations: 2.714 MB / 1.276 GB, free: 12.48 MB / 1.014 GB Notification: Performance of preOpt findStateOrder (simulation): time 5.977e-05/1.14, allocations: 3.938 kB / 1.276 GB, free: 12.48 MB / 1.014 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0004092/1.14, allocations: 87.98 kB / 1.276 GB, free: 12.39 MB / 1.014 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 4.925e-05/1.14, allocations: 52 kB / 1.276 GB, free: 12.34 MB / 1.014 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.005918/1.146, allocations: 2.092 MB / 1.278 GB, free: 10.25 MB / 1.014 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 0.01858/1.165, allocations: 12.54 MB / 1.29 GB, free: 12.84 MB / 1.029 GB Notification: Performance of preOpt comSubExp (simulation): time 0.00422/1.169, allocations: 1.599 MB / 1.292 GB, free: 11.23 MB / 1.029 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.001908/1.171, allocations: 0.7629 MB / 1.293 GB, free: 10.46 MB / 1.029 GB Notification: Performance of preOpt evalFunc (simulation): time 0.006611/1.177, allocations: 3.72 MB / 1.296 GB, free: 6.457 MB / 1.029 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 3.555e-05/1.178, allocations: 39.56 kB / 1.296 GB, free: 6.41 MB / 1.029 GB Notification: Performance of pre-optimization done (n=104): time 2.274e-06/1.178, allocations: 0 / 1.296 GB, free: 6.41 MB / 1.029 GB Notification: Performance of matching and sorting (n=104): time 0.009282/1.187, allocations: 3.08 MB / 1.299 GB, free: 3.234 MB / 1.029 GB Notification: Performance of inlineWhenForInitialization (initialization): time 4.025e-05/1.187, allocations: 64.34 kB / 1.299 GB, free: 3.16 MB / 1.029 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.005322/1.192, allocations: 3.26 MB / 1.303 GB, free: 15.88 MB / 1.045 GB Notification: Performance of collectPreVariables (initialization): time 0.0002089/1.192, allocations: 57.7 kB / 1.303 GB, free: 15.82 MB / 1.045 GB Notification: Performance of collectInitialEqns (initialization): time 0.00152/1.194, allocations: 1.725 MB / 1.304 GB, free: 14.08 MB / 1.045 GB Notification: Performance of collectInitialBindings (initialization): time 0.0004149/1.194, allocations: 370.7 kB / 1.305 GB, free: 13.71 MB / 1.045 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0007746/1.195, allocations: 435.2 kB / 1.305 GB, free: 13.28 MB / 1.045 GB Notification: Performance of setup shared object (initialization): time 0.0001042/1.195, allocations: 305.1 kB / 1.305 GB, free: 12.98 MB / 1.045 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.002452/1.198, allocations: 1.078 MB / 1.306 GB, free: 11.9 MB / 1.045 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.00289/1.201, allocations: 1.725 MB / 1.308 GB, free: 9.883 MB / 1.045 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.00515/1.206, allocations: 2.678 MB / 1.311 GB, free: 6.969 MB / 1.045 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 1.66e-05/1.206, allocations: 8 kB / 1.311 GB, free: 6.961 MB / 1.045 GB Notification: Performance of matching and sorting (n=224) (initialization): time 0.007571/1.213, allocations: 3.406 MB / 1.314 GB, free: 3.531 MB / 1.045 GB Notification: Performance of prepare postOptimizeDAE: time 3.205e-05/1.213, allocations: 15.98 kB / 1.314 GB, free: 3.516 MB / 1.045 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 2.865e-05/1.213, allocations: 20 kB / 1.314 GB, free: 3.496 MB / 1.045 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.00146/1.215, allocations: 0.5537 MB / 1.315 GB, free: 2.93 MB / 1.045 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001863/1.217, allocations: 451.2 kB / 1.315 GB, free: 2.488 MB / 1.045 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.002056/1.219, allocations: 2.596 MB / 1.318 GB, free: 15.79 MB / 1.061 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.002515/1.221, allocations: 261.9 kB / 1.318 GB, free: 15.53 MB / 1.061 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0002803/1.222, allocations: 135.9 kB / 1.318 GB, free: 15.4 MB / 1.061 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.003217/1.225, allocations: 1.542 MB / 1.32 GB, free: 13.85 MB / 1.061 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.002639/1.228, allocations: 1.557 MB / 1.321 GB, free: 12 MB / 1.061 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.004592/1.232, allocations: 2.368 MB / 1.323 GB, free: 9.395 MB / 1.061 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 1.666e-05/1.232, allocations: 4 kB / 1.323 GB, free: 9.391 MB / 1.061 GB Notification: Performance of matching and sorting (n=224) (initialization_lambda0): time 0.007516/1.24, allocations: 3.129 MB / 1.326 GB, free: 6.242 MB / 1.061 GB Notification: Performance of prepare postOptimizeDAE: time 2.28e-05/1.24, allocations: 12 kB / 1.326 GB, free: 6.23 MB / 1.061 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 2.155e-05/1.24, allocations: 16 kB / 1.326 GB, free: 6.215 MB / 1.061 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.002115/1.242, allocations: 0.6599 MB / 1.327 GB, free: 5.543 MB / 1.061 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001637/1.244, allocations: 419.3 kB / 1.328 GB, free: 5.133 MB / 1.061 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.01447/1.258, allocations: 11.84 MB / 1.339 GB, free: 8.617 MB / 1.076 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.002524/1.261, allocations: 218.6 kB / 1.339 GB, free: 8.402 MB / 1.076 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0003657/1.261, allocations: 116 kB / 1.339 GB, free: 8.289 MB / 1.076 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 77 * Number of states: 0 () * Number of discrete variables: 0 () * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (196): * Single equations (assignments): 188 * Array equations: 4 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 4 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 0 systems * Non-linear torn systems (#iteration vars, #inner vars): 4 systems {(1,4), (1,4), (1,4), (1,4)} Notification: Performance of prepare postOptimizeDAE: time 0.0006789/1.262, allocations: 291.6 kB / 1.34 GB, free: 7.996 MB / 1.076 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0009333/1.263, allocations: 343.6 kB / 1.34 GB, free: 7.656 MB / 1.076 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.007129/1.27, allocations: 2.639 MB / 1.343 GB, free: 4.988 MB / 1.076 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 2.717e-05/1.27, allocations: 27.92 kB / 1.343 GB, free: 4.961 MB / 1.076 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 5.57e-06/1.27, allocations: 0 / 1.343 GB, free: 4.961 MB / 1.076 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 1.547e-05/1.27, allocations: 3.984 kB / 1.343 GB, free: 4.957 MB / 1.076 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.01112/1.281, allocations: 4.782 MB / 1.347 GB, free: 88 kB / 1.076 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 8.786e-06/1.281, allocations: 4 kB / 1.347 GB, free: 84 kB / 1.076 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.001392/1.282, allocations: 263.8 kB / 1.348 GB, free: 15.82 MB / 1.092 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0009072/1.283, allocations: 339 kB / 1.348 GB, free: 15.48 MB / 1.092 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0001248/1.283, allocations: 43.95 kB / 1.348 GB, free: 15.43 MB / 1.092 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.00176/1.285, allocations: 2.498 MB / 1.35 GB, free: 12.83 MB / 1.092 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 6.152e-06/1.285, allocations: 8.266 kB / 1.35 GB, free: 12.82 MB / 1.092 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.005834/1.291, allocations: 2.397 MB / 1.353 GB, free: 10.39 MB / 1.092 GB Notification: Performance of postOpt removeConstants (simulation): time 0.001429/1.293, allocations: 0.5899 MB / 1.353 GB, free: 9.773 MB / 1.092 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0006515/1.293, allocations: 23.94 kB / 1.353 GB, free: 9.75 MB / 1.092 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.001887/1.295, allocations: 115.9 kB / 1.353 GB, free: 9.637 MB / 1.092 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001479/1.295, allocations: 77.14 kB / 1.353 GB, free: 9.559 MB / 1.092 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0001507/1.295, allocations: 75.92 kB / 1.354 GB, free: 9.484 MB / 1.092 GB Notification: Performance of sorting global known variables: time 0.003626/1.299, allocations: 2.175 MB / 1.356 GB, free: 7.305 MB / 1.092 GB Notification: Performance of sort global known variables: time 1.6e-07/1.299, allocations: 0 / 1.356 GB, free: 7.305 MB / 1.092 GB Notification: Performance of remove unused functions: time 0.0051/1.304, allocations: 1.723 MB / 1.357 GB, free: 5.578 MB / 1.092 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 3 * Number of states: 0 () * Number of discrete variables: 0 () * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (109): * Single equations (assignments): 96 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 9 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 4 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 0 systems * Non-linear torn systems (#iteration vars, #inner vars): 4 systems {(1,5), (1,5), (1,5), (1,5)} Notification: Performance of Backend phase and start with SimCode phase: time 0.00721/1.311, allocations: 3.394 MB / 1.361 GB, free: 2.145 MB / 1.092 GB Notification: Performance of simCode: created initialization part: time 0.01024/1.322, allocations: 4.251 MB / 1.365 GB, free: 13.84 MB / 1.107 GB Notification: Performance of simCode: created event and clocks part: time 4.899e-06/1.322, allocations: 3.938 kB / 1.365 GB, free: 13.84 MB / 1.107 GB Notification: Performance of simCode: created simulation system equations: time 0.00245/1.324, allocations: 0.9297 MB / 1.366 GB, free: 12.91 MB / 1.107 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.007323/1.331, allocations: 1.643 MB / 1.367 GB, free: 11.3 MB / 1.107 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.05509/1.387, allocations: 26.27 MB / 1.393 GB, free: 320 kB / 1.123 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.002609/1.389, allocations: 2.164 MB / 1.395 GB, free: 14.12 MB / 1.139 GB Notification: Performance of simCode: alias equations: time 0.003608/1.393, allocations: 0.8167 MB / 1.396 GB, free: 13.3 MB / 1.139 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.002274/1.395, allocations: 1.542 MB / 1.397 GB, free: 11.76 MB / 1.139 GB Notification: Performance of SimCode: time 7.92e-07/1.395, allocations: 0 / 1.397 GB, free: 11.76 MB / 1.139 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.1495/1.545, allocations: 101.5 MB / 1.497 GB, free: 7.496 MB / 1.232 GB Notification: Performance of buildModelFMU: Generate platform static: time 19.02/20.56, allocations: 13.59 kB / 1.497 GB, free: 7.488 MB / 1.232 GB (rm -f Buildings_9_Buildings.Fluid.Movers.Validation.PumpCurveConstruction.pipe ; mkfifo Buildings_9_Buildings.Fluid.Movers.Validation.PumpCurveConstruction.pipe ; head -c 1048576 < Buildings_9_Buildings.Fluid.Movers.Validation.PumpCurveConstruction.pipe >> ../files/Buildings_9_Buildings.Fluid.Movers.Validation.PumpCurveConstruction.sim & /home/hudson/saved_omc/OMSimulator/install/bin/OMSimulator -r=Buildings_9_Buildings.Fluid.Movers.Validation.PumpCurveConstruction_res.mat --tempDir=temp_Buildings_9_Buildings_Fluid_Movers_Validation_PumpCurveConstruction_fmu --startTime=0 --stopTime=1 --timeout=50 --tolerance=1e-06 Buildings_9_Buildings_Fluid_Movers_Validation_PumpCurveConstruction.fmu > Buildings_9_Buildings.Fluid.Movers.Validation.PumpCurveConstruction.pipe 2>&1) diffSimulationResults("Buildings_9_Buildings.Fluid.Movers.Validation.PumpCurveConstruction_res.mat","/mnt/ReferenceFiles/Buildings/csv/maint_9.1.x/Buildings_Fluid_Movers_Validation_PumpCurveConstruction.csv","/var/lib/jenkins1/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/files/Buildings_9_Buildings.Fluid.Movers.Validation.PumpCurveConstruction.diff",relTol=0.003,relTolDiffMinMax=0.003,rangeDelta=0.001) Reference file matches