Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_9_Buildings.Fluid.Movers.Validation.FlowControlled_m_flow.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 9.1.2-maint.9.1.x/package.mo", uses=false) Using package Buildings with version 9.1.2 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 9.1.2-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.Movers.Validation.FlowControlled_m_flow,tolerance=1e-06,outputFormat="mat",numberOfIntervals=5000,variableFilter="time|gain.u|floMacSta.dpMachine|floMacDyn.dpMachine|floMacSta.VMachine_flow|floMacDyn.VMachine_flow",fileNamePrefix="Buildings_9_Buildings.Fluid.Movers.Validation.FlowControlled_m_flow") translateModel(Buildings.Fluid.Movers.Validation.FlowControlled_m_flow,tolerance=1e-06,outputFormat="mat",numberOfIntervals=5000,variableFilter="time|gain.u|floMacSta.dpMachine|floMacDyn.dpMachine|floMacSta.VMachine_flow|floMacDyn.VMachine_flow",fileNamePrefix="Buildings_9_Buildings.Fluid.Movers.Validation.FlowControlled_m_flow") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001555/0.001555, allocations: 107 kB / 16.36 MB, free: 6.336 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001771/0.001771, allocations: 195.3 kB / 17.29 MB, free: 5.883 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.404/1.404, allocations: 222.9 MB / 241 MB, free: 15.18 MB / 206.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 9.1.2-maint.9.1.x/package.mo): time 2.363/2.363, allocations: 390.3 MB / 0.6655 GB, free: 0.6094 MB / 0.5294 GB Notification: Performance of FrontEnd - loaded program: time 0.002158/0.002159, allocations: 62.22 kB / 0.814 GB, free: 32.72 MB / 0.6231 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.2835/0.2857, allocations: 140.4 MB / 0.9511 GB, free: 8.078 MB / 0.7325 GB Notification: Performance of NFInst.instantiate(Buildings.Fluid.Movers.Validation.FlowControlled_m_flow): time 0.7321/1.018, allocations: 323.5 MB / 1.267 GB, free: 11.39 MB / 0.9356 GB Notification: Performance of NFInst.instExpressions: time 0.02763/1.045, allocations: 20.21 MB / 1.287 GB, free: 9.055 MB / 0.9512 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.003671/1.049, allocations: 91.5 kB / 1.287 GB, free: 8.965 MB / 0.9512 GB Notification: Performance of NFTyping.typeComponents: time 0.004531/1.054, allocations: 1.515 MB / 1.288 GB, free: 7.441 MB / 0.9512 GB Notification: Performance of NFTyping.typeBindings: time 0.01194/1.066, allocations: 4.233 MB / 1.292 GB, free: 3.195 MB / 0.9512 GB Notification: Performance of NFTyping.typeClassSections: time 0.006119/1.072, allocations: 2.36 MB / 1.295 GB, free: 0.8516 MB / 0.9512 GB Notification: Performance of NFFlatten.flatten: time 0.008973/1.081, allocations: 5.938 MB / 1.301 GB, free: 10.9 MB / 0.9669 GB Notification: Performance of NFFlatten.resolveConnections: time 0.003541/1.084, allocations: 2.161 MB / 1.303 GB, free: 8.691 MB / 0.9669 GB Notification: Performance of NFEvalConstants.evaluate: time 0.007146/1.092, allocations: 3.211 MB / 1.306 GB, free: 5.469 MB / 0.9669 GB Notification: Performance of NFSimplifyModel.simplify: time 0.003638/1.095, allocations: 1.715 MB / 1.307 GB, free: 3.754 MB / 0.9669 GB Notification: Performance of NFPackage.collectConstants: time 0.0006101/1.096, allocations: 224 kB / 1.308 GB, free: 3.535 MB / 0.9669 GB Notification: Performance of NFFlatten.collectFunctions: time 0.007182/1.103, allocations: 3.691 MB / 1.311 GB, free: 15.84 MB / 0.9825 GB Notification: Performance of NFScalarize.scalarize: time 0.001071/1.104, allocations: 0.8725 MB / 1.312 GB, free: 14.96 MB / 0.9825 GB Notification: Performance of NFVerifyModel.verify: time 0.001778/1.106, allocations: 1.33 MB / 1.313 GB, free: 13.62 MB / 0.9825 GB Notification: Performance of NFConvertDAE.convert: time 0.007867/1.114, allocations: 4.74 MB / 1.318 GB, free: 8.871 MB / 0.9825 GB Notification: Performance of FrontEnd - DAE generated: time 5.691e-06/1.114, allocations: 0 / 1.318 GB, free: 8.871 MB / 0.9825 GB Notification: Performance of FrontEnd: time 2.074e-06/1.114, allocations: 0 / 1.318 GB, free: 8.871 MB / 0.9825 GB Notification: Performance of Transformations before backend: time 4.483e-05/1.114, allocations: 0 / 1.318 GB, free: 8.871 MB / 0.9825 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 341 * Number of variables: 341 Notification: Performance of Generate backend data structure: time 0.005026/1.119, allocations: 2.968 MB / 1.321 GB, free: 5.84 MB / 0.9825 GB Notification: Performance of prepare preOptimizeDAE: time 3.603e-05/1.119, allocations: 8.031 kB / 1.321 GB, free: 5.832 MB / 0.9825 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.006792/1.126, allocations: 1.011 MB / 1.322 GB, free: 4.816 MB / 0.9825 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.004608/1.131, allocations: 1.987 MB / 1.324 GB, free: 2.754 MB / 0.9825 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 9.852e-05/1.131, allocations: 110.7 kB / 1.324 GB, free: 2.645 MB / 0.9825 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0002733/1.131, allocations: 156 kB / 1.324 GB, free: 2.492 MB / 0.9825 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.00331/1.134, allocations: 1.713 MB / 1.326 GB, free: 0.7109 MB / 0.9825 GB Notification: Performance of preOpt findStateOrder (simulation): time 3.038e-05/1.134, allocations: 0 / 1.326 GB, free: 0.7109 MB / 0.9825 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0001262/1.134, allocations: 60 kB / 1.326 GB, free: 0.6523 MB / 0.9825 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 4.709e-05/1.134, allocations: 46.58 kB / 1.326 GB, free: 0.6055 MB / 0.9825 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.00348/1.138, allocations: 1.45 MB / 1.327 GB, free: 15.15 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 0.01091/1.149, allocations: 7.958 MB / 1.335 GB, free: 6.594 MB / 0.9981 GB Notification: Performance of preOpt comSubExp (simulation): time 0.00232/1.151, allocations: 1.083 MB / 1.336 GB, free: 5.473 MB / 0.9981 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.001277/1.153, allocations: 0.5332 MB / 1.337 GB, free: 4.938 MB / 0.9981 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0002058/1.153, allocations: 113.7 kB / 1.337 GB, free: 4.809 MB / 0.9981 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 3.977e-05/1.153, allocations: 39.22 kB / 1.337 GB, free: 4.758 MB / 0.9981 GB Notification: Performance of pre-optimization done (n=72): time 2.505e-06/1.153, allocations: 4 kB / 1.337 GB, free: 4.754 MB / 0.9981 GB Notification: Performance of matching and sorting (n=72): time 0.004116/1.157, allocations: 1.471 MB / 1.338 GB, free: 3.277 MB / 0.9981 GB Notification: Performance of inlineWhenForInitialization (initialization): time 4.248e-05/1.157, allocations: 64.06 kB / 1.338 GB, free: 3.203 MB / 0.9981 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.002596/1.16, allocations: 1.794 MB / 1.34 GB, free: 1.375 MB / 0.9981 GB Notification: Performance of collectPreVariables (initialization): time 0.000138/1.16, allocations: 49.64 kB / 1.34 GB, free: 1.32 MB / 0.9981 GB Notification: Performance of collectInitialEqns (initialization): time 0.0007624/1.16, allocations: 0.9879 MB / 1.341 GB, free: 328 kB / 0.9981 GB Notification: Performance of collectInitialBindings (initialization): time 0.0002443/1.161, allocations: 252.3 kB / 1.341 GB, free: 72 kB / 0.9981 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0003484/1.161, allocations: 210.4 kB / 1.342 GB, free: 15.86 MB / 1.014 GB Notification: Performance of setup shared object (initialization): time 0.0001235/1.161, allocations: 345.9 kB / 1.342 GB, free: 15.52 MB / 1.014 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.001214/1.162, allocations: 0.4888 MB / 1.342 GB, free: 15.02 MB / 1.014 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.001472/1.164, allocations: 0.86 MB / 1.343 GB, free: 13.99 MB / 1.014 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.002566/1.167, allocations: 1.281 MB / 1.344 GB, free: 12.59 MB / 1.014 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 8.646e-06/1.167, allocations: 4 kB / 1.344 GB, free: 12.58 MB / 1.014 GB Notification: Performance of matching and sorting (n=122) (initialization): time 0.003372/1.17, allocations: 1.498 MB / 1.346 GB, free: 11.07 MB / 1.014 GB Notification: Performance of prepare postOptimizeDAE: time 2.546e-05/1.17, allocations: 11.98 kB / 1.346 GB, free: 11.06 MB / 1.014 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.451e-05/1.17, allocations: 8 kB / 1.346 GB, free: 11.05 MB / 1.014 GB Notification: Performance of postOpt tearingSystem (initialization): time 2.606e-05/1.17, allocations: 16 kB / 1.346 GB, free: 11.04 MB / 1.014 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.00138/1.171, allocations: 291.9 kB / 1.346 GB, free: 10.75 MB / 1.014 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.0003474/1.172, allocations: 0.6016 MB / 1.347 GB, free: 10.13 MB / 1.014 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001459/1.173, allocations: 164.1 kB / 1.347 GB, free: 9.965 MB / 1.014 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001005/1.173, allocations: 51.98 kB / 1.347 GB, free: 9.914 MB / 1.014 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.001708/1.175, allocations: 0.8532 MB / 1.348 GB, free: 9.055 MB / 1.014 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.001268/1.176, allocations: 0.8209 MB / 1.349 GB, free: 8.062 MB / 1.014 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.002215/1.179, allocations: 1.18 MB / 1.35 GB, free: 6.754 MB / 1.014 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 5.62e-06/1.179, allocations: 4 kB / 1.35 GB, free: 6.75 MB / 1.014 GB Notification: Performance of matching and sorting (n=122) (initialization_lambda0): time 0.002892/1.181, allocations: 1.381 MB / 1.351 GB, free: 5.359 MB / 1.014 GB Notification: Performance of prepare postOptimizeDAE: time 1.633e-05/1.182, allocations: 11.98 kB / 1.351 GB, free: 5.348 MB / 1.014 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.22e-05/1.182, allocations: 12 kB / 1.351 GB, free: 5.336 MB / 1.014 GB Notification: Performance of postOpt tearingSystem (initialization): time 1.351e-05/1.182, allocations: 12.41 kB / 1.351 GB, free: 5.324 MB / 1.014 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001093/1.183, allocations: 263.6 kB / 1.351 GB, free: 5.066 MB / 1.014 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 1.725e-05/1.183, allocations: 23.94 kB / 1.351 GB, free: 5.043 MB / 1.014 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001282/1.184, allocations: 120.6 kB / 1.352 GB, free: 4.926 MB / 1.014 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 9.061e-05/1.184, allocations: 51.98 kB / 1.352 GB, free: 4.875 MB / 1.014 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 42 * 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 (120): * Single equations (assignments): 117 * Array equations: 2 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 1 * Torn equation systems: 0 * Mixed (continuous/discrete) equation systems: 0 Notification: Equation system details (not torn): * Constant Jacobian (size): 0 systems * Linear Jacobian (size,density): 0 systems * Non-linear Jacobian (size): 1 system {1} * Without analytic Jacobian (size): 0 systems Notification: Performance of prepare postOptimizeDAE: time 0.000284/1.184, allocations: 248.4 kB / 1.352 GB, free: 4.625 MB / 1.014 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0002604/1.185, allocations: 189.6 kB / 1.352 GB, free: 4.438 MB / 1.014 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.002953/1.188, allocations: 1.149 MB / 1.353 GB, free: 3.281 MB / 1.014 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 7.845e-06/1.188, allocations: 4 kB / 1.353 GB, free: 3.277 MB / 1.014 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 7.534e-06/1.188, allocations: 4 kB / 1.353 GB, free: 3.273 MB / 1.014 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.002281/1.19, allocations: 0.9801 MB / 1.354 GB, free: 2.262 MB / 1.014 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.00582/1.196, allocations: 3.041 MB / 1.357 GB, free: 15.1 MB / 1.029 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 4.749e-06/1.196, allocations: 0 / 1.357 GB, free: 15.1 MB / 1.029 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.001187/1.197, allocations: 211.8 kB / 1.357 GB, free: 14.89 MB / 1.029 GB Notification: Performance of postOpt tearingSystem (simulation): time 1.224e-05/1.197, allocations: 11.94 kB / 1.357 GB, free: 14.88 MB / 1.029 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 6.806e-05/1.197, allocations: 23.98 kB / 1.357 GB, free: 14.86 MB / 1.029 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.0002991/1.197, allocations: 0.5898 MB / 1.358 GB, free: 14.24 MB / 1.029 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 3.717e-06/1.197, allocations: 3.938 kB / 1.358 GB, free: 14.24 MB / 1.029 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.003809/1.201, allocations: 1.723 MB / 1.36 GB, free: 12.48 MB / 1.029 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0007292/1.202, allocations: 354.5 kB / 1.36 GB, free: 12.11 MB / 1.029 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0002117/1.202, allocations: 20 kB / 1.36 GB, free: 12.09 MB / 1.029 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.001101/1.203, allocations: 75.86 kB / 1.36 GB, free: 12.02 MB / 1.029 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 9.996e-05/1.203, allocations: 52.44 kB / 1.36 GB, free: 11.97 MB / 1.029 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 6.985e-05/1.203, allocations: 27.98 kB / 1.36 GB, free: 11.94 MB / 1.029 GB Notification: Performance of sorting global known variables: time 0.001635/1.205, allocations: 1.22 MB / 1.361 GB, free: 10.7 MB / 1.029 GB Notification: Performance of sort global known variables: time 1.5e-07/1.205, allocations: 0 / 1.361 GB, free: 10.7 MB / 1.029 GB Notification: Performance of remove unused functions: time 0.002151/1.207, allocations: 0.9623 MB / 1.362 GB, free: 9.738 MB / 1.029 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 5 * Number of states: 3 (floMacDyn.vol.dynBal.medium.Xi[1],floMacDyn.vol.dynBal.U,floMacDyn.vol.dynBal.m) * 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 (74): * Single equations (assignments): 73 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 1 * Torn equation systems: 0 * Mixed (continuous/discrete) equation systems: 0 Notification: Equation system details (not torn): * Constant Jacobian (size): 0 systems * Linear Jacobian (size,density): 0 systems * Non-linear Jacobian (size): 1 system {1} * Without analytic Jacobian (size): 0 systems Notification: Performance of Backend phase and start with SimCode phase: time 0.0007632/1.208, allocations: 363.3 kB / 1.363 GB, free: 9.391 MB / 1.029 GB Notification: Performance of simCode: created initialization part: time 0.0042/1.212, allocations: 1.738 MB / 1.364 GB, free: 7.656 MB / 1.029 GB Notification: Performance of simCode: created event and clocks part: time 3.457e-06/1.212, allocations: 4 kB / 1.364 GB, free: 7.652 MB / 1.029 GB Notification: Performance of simCode: created simulation system equations: time 0.001241/1.213, allocations: 0.4955 MB / 1.365 GB, free: 7.156 MB / 1.029 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.003864/1.217, allocations: 1.034 MB / 1.366 GB, free: 6.141 MB / 1.029 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.005789/1.223, allocations: 3.526 MB / 1.369 GB, free: 2.566 MB / 1.029 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.00139/1.225, allocations: 1.558 MB / 1.371 GB, free: 0.9727 MB / 1.029 GB Notification: Performance of simCode: alias equations: time 0.002512/1.227, allocations: 492.5 kB / 1.371 GB, free: 500 kB / 1.029 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0005463/1.228, allocations: 147.4 kB / 1.371 GB, free: 352 kB / 1.029 GB Notification: Performance of SimCode: time 9.52e-07/1.228, allocations: 3.938 kB / 1.371 GB, free: 348 kB / 1.029 GB Notification: Performance of Templates: time 0.06164/1.289, allocations: 38.47 MB / 1.409 GB, free: 10.43 MB / 1.076 GB make -j1 -f Buildings_9_Buildings.Fluid.Movers.Validation.FlowControlled_m_flow.makefile (rm -f Buildings_9_Buildings.Fluid.Movers.Validation.FlowControlled_m_flow.pipe ; mkfifo Buildings_9_Buildings.Fluid.Movers.Validation.FlowControlled_m_flow.pipe ; head -c 1048576 < Buildings_9_Buildings.Fluid.Movers.Validation.FlowControlled_m_flow.pipe >> ../files/Buildings_9_Buildings.Fluid.Movers.Validation.FlowControlled_m_flow.sim & ./Buildings_9_Buildings.Fluid.Movers.Validation.FlowControlled_m_flow -abortSlowSimulation -alarm=480 -s gbode -emit_protected -lv LOG_STATS > Buildings_9_Buildings.Fluid.Movers.Validation.FlowControlled_m_flow.pipe 2>&1) diffSimulationResults("Buildings_9_Buildings.Fluid.Movers.Validation.FlowControlled_m_flow_res.mat","/mnt/ReferenceFiles/Buildings/csv/maint_9.1.x/Buildings_Fluid_Movers_Validation_FlowControlled_m_flow.csv","/var/lib/jenkins1/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/files/Buildings_9_Buildings.Fluid.Movers.Validation.FlowControlled_m_flow.diff",relTol=0.003,relTolDiffMinMax=0.003,rangeDelta=0.001) Reference file matches