Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_latest_Buildings.Fluid.FixedResistances.Examples.HydraulicDiameter.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.FixedResistances.Examples.HydraulicDiameter,tolerance=1e-06,outputFormat="mat",numberOfIntervals=5000,variableFilter="time|res.m_flow_nominal|res.m_flow|res.m_flow_turbulent|resLarPip.m_flow_nominal|resLarPip.m_flow|resLarPip.m_flow_turbulent|res.v|resLarPip.v|res.dh|resLarPip.dh",fileNamePrefix="Buildings_latest_Buildings.Fluid.FixedResistances.Examples.HydraulicDiameter") translateModel(Buildings.Fluid.FixedResistances.Examples.HydraulicDiameter,tolerance=1e-06,outputFormat="mat",numberOfIntervals=5000,variableFilter="time|res.m_flow_nominal|res.m_flow|res.m_flow_turbulent|resLarPip.m_flow_nominal|resLarPip.m_flow|resLarPip.m_flow_turbulent|res.v|resLarPip.v|res.dh|resLarPip.dh",fileNamePrefix="Buildings_latest_Buildings.Fluid.FixedResistances.Examples.HydraulicDiameter") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.009/0.009001, allocations: 100.2 kB / 15.73 MB, free: 6.047 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001501/0.001501, allocations: 185.3 kB / 16.67 MB, free: 5.977 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.484/1.484, allocations: 222.9 MB / 240.4 MB, free: 4.312 MB / 190.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 11.0.1-master/package.mo): time 2.948/2.948, allocations: 461.8 MB / 0.7347 GB, free: 14.67 MB / 0.5919 GB Notification: Performance of FrontEnd - loaded program: time 0.00122/0.00122, allocations: 64.12 kB / 1.054 GB, free: 7.215 MB / 0.8106 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.3573/0.3585, allocations: 157.4 MB / 1.208 GB, free: 9.707 MB / 0.9669 GB Notification: Performance of NFInst.instantiate(Buildings.Fluid.FixedResistances.Examples.HydraulicDiameter): time 0.02151/0.3801, allocations: 15.05 MB / 1.222 GB, free: 10.59 MB / 0.9825 GB Notification: Performance of NFInst.instExpressions: time 0.006747/0.3869, allocations: 3.892 MB / 1.226 GB, free: 6.688 MB / 0.9825 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.0007528/0.3877, allocations: 23.88 kB / 1.226 GB, free: 6.664 MB / 0.9825 GB Notification: Performance of NFTyping.typeComponents: time 0.0008056/0.3885, allocations: 186.6 kB / 1.226 GB, free: 6.48 MB / 0.9825 GB Notification: Performance of NFTyping.typeBindings: time 0.002332/0.3909, allocations: 0.6725 MB / 1.227 GB, free: 5.805 MB / 0.9825 GB Notification: Performance of NFTyping.typeClassSections: time 0.001737/0.3926, allocations: 486 kB / 1.228 GB, free: 5.336 MB / 0.9825 GB Notification: Performance of NFFlatten.flatten: time 0.002102/0.3948, allocations: 1.083 MB / 1.229 GB, free: 4.25 MB / 0.9825 GB Notification: Performance of NFFlatten.resolveConnections: time 0.0006421/0.3954, allocations: 281.5 kB / 1.229 GB, free: 3.969 MB / 0.9825 GB Notification: Performance of NFEvalConstants.evaluate: time 0.000928/0.3964, allocations: 418.4 kB / 1.229 GB, free: 3.559 MB / 0.9825 GB Notification: Performance of NFSimplifyModel.simplify: time 0.0005219/0.3969, allocations: 262.8 kB / 1.23 GB, free: 3.301 MB / 0.9825 GB Notification: Performance of NFPackage.collectConstants: time 7.315e-05/0.397, allocations: 24 kB / 1.23 GB, free: 3.277 MB / 0.9825 GB Notification: Performance of NFFlatten.collectFunctions: time 0.001396/0.3984, allocations: 0.7135 MB / 1.23 GB, free: 2.562 MB / 0.9825 GB Notification: Performance of NFScalarize.scalarize: time 0.0001223/0.3985, allocations: 71.69 kB / 1.23 GB, free: 2.492 MB / 0.9825 GB Notification: Performance of NFVerifyModel.verify: time 0.0002764/0.3988, allocations: 191 kB / 1.23 GB, free: 2.305 MB / 0.9825 GB Notification: Performance of NFConvertDAE.convert: time 0.001366/0.4002, allocations: 0.7167 MB / 1.231 GB, free: 1.586 MB / 0.9825 GB Notification: Performance of FrontEnd - DAE generated: time 5.39e-06/0.4002, allocations: 0 / 1.231 GB, free: 1.586 MB / 0.9825 GB Notification: Performance of FrontEnd: time 1.693e-06/0.4002, allocations: 0 / 1.231 GB, free: 1.586 MB / 0.9825 GB Notification: Performance of Transformations before backend: time 1.676e-05/0.4002, allocations: 0 / 1.231 GB, free: 1.586 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: 40 * Number of variables: 40 Notification: Performance of Generate backend data structure: time 0.001374/0.4016, allocations: 0.7512 MB / 1.232 GB, free: 0.7812 MB / 0.9825 GB Notification: Performance of prepare preOptimizeDAE: time 4.407e-05/0.4016, allocations: 8.625 kB / 1.232 GB, free: 0.7734 MB / 0.9825 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0001429/0.4018, allocations: 48.47 kB / 1.232 GB, free: 0.7266 MB / 0.9825 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.001116/0.4029, allocations: 0.5018 MB / 1.232 GB, free: 192 kB / 0.9825 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 1.551e-05/0.4029, allocations: 12.33 kB / 1.232 GB, free: 180 kB / 0.9825 GB Notification: Performance of preOpt expandDerOperator (simulation): time 3.08e-05/0.403, allocations: 24 kB / 1.232 GB, free: 156 kB / 0.9825 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.0003955/0.4034, allocations: 184.1 kB / 1.233 GB, free: 15.97 MB / 0.9981 GB Notification: Performance of preOpt findStateOrder (simulation): time 1.045e-05/0.4034, allocations: 0 / 1.233 GB, free: 15.97 MB / 0.9981 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 2.239e-05/0.4034, allocations: 8 kB / 1.233 GB, free: 15.96 MB / 0.9981 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 7.474e-06/0.4035, allocations: 4 kB / 1.233 GB, free: 15.96 MB / 0.9981 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0003262/0.4038, allocations: 136.2 kB / 1.233 GB, free: 15.82 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 0.001265/0.4051, allocations: 0.876 MB / 1.234 GB, free: 14.85 MB / 0.9981 GB Notification: Performance of preOpt comSubExp (simulation): time 0.0002613/0.4053, allocations: 118.6 kB / 1.234 GB, free: 14.72 MB / 0.9981 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0001616/0.4055, allocations: 72.81 kB / 1.234 GB, free: 14.65 MB / 0.9981 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0002825/0.4058, allocations: 340.4 kB / 1.234 GB, free: 14.24 MB / 0.9981 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 2.768e-05/0.4058, allocations: 30.56 kB / 1.234 GB, free: 14.2 MB / 0.9981 GB Notification: Performance of pre-optimization done (n=12): time 1.583e-06/0.4058, allocations: 0 / 1.234 GB, free: 14.2 MB / 0.9981 GB Notification: Performance of matching and sorting (n=12): time 0.0005953/0.4064, allocations: 221 kB / 1.234 GB, free: 13.98 MB / 0.9981 GB Notification: Performance of inlineWhenForInitialization (initialization): time 3.887e-05/0.4065, allocations: 59.34 kB / 1.234 GB, free: 13.91 MB / 0.9981 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.000341/0.4068, allocations: 341.7 kB / 1.235 GB, free: 13.57 MB / 0.9981 GB Notification: Performance of collectPreVariables (initialization): time 2.579e-05/0.4069, allocations: 33.7 kB / 1.235 GB, free: 13.53 MB / 0.9981 GB Notification: Performance of collectInitialEqns (initialization): time 0.0001366/0.407, allocations: 196.3 kB / 1.235 GB, free: 13.34 MB / 0.9981 GB Notification: Performance of collectInitialBindings (initialization): time 3.702e-05/0.4071, allocations: 35.38 kB / 1.235 GB, free: 13.3 MB / 0.9981 GB Notification: Performance of simplifyInitialFunctions (initialization): time 6.644e-05/0.4071, allocations: 37.7 kB / 1.235 GB, free: 13.26 MB / 0.9981 GB Notification: Performance of setup shared object (initialization): time 0.0001312/0.4073, allocations: 338.8 kB / 1.235 GB, free: 12.92 MB / 0.9981 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0001411/0.4074, allocations: 52.83 kB / 1.235 GB, free: 12.86 MB / 0.9981 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0001727/0.4076, allocations: 88.25 kB / 1.236 GB, free: 12.76 MB / 0.9981 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0002646/0.4079, allocations: 121.5 kB / 1.236 GB, free: 12.64 MB / 0.9981 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 2.515e-06/0.4079, allocations: 0 / 1.236 GB, free: 12.64 MB / 0.9981 GB Notification: Performance of matching and sorting (n=12) (initialization): time 0.0003908/0.4083, allocations: 177.2 kB / 1.236 GB, free: 12.46 MB / 0.9981 GB Notification: Performance of prepare postOptimizeDAE: time 1.752e-05/0.4083, allocations: 11.94 kB / 1.236 GB, free: 12.45 MB / 0.9981 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 5.61e-06/0.4083, allocations: 0 / 1.236 GB, free: 12.45 MB / 0.9981 GB Notification: Performance of postOpt tearingSystem (initialization): time 1.485e-05/0.4083, allocations: 0 / 1.236 GB, free: 12.45 MB / 0.9981 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0001487/0.4085, allocations: 27.97 kB / 1.236 GB, free: 12.42 MB / 0.9981 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 7.635e-06/0.4085, allocations: 3.938 kB / 1.236 GB, free: 12.41 MB / 0.9981 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0001911/0.4087, allocations: 27.83 kB / 1.236 GB, free: 12.39 MB / 0.9981 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 2.298e-05/0.4087, allocations: 4 kB / 1.236 GB, free: 12.38 MB / 0.9981 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.0002107/0.4089, allocations: 152.1 kB / 1.236 GB, free: 12.23 MB / 0.9981 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.0001533/0.4091, allocations: 96.17 kB / 1.236 GB, free: 12.12 MB / 0.9981 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.0002466/0.4094, allocations: 109.7 kB / 1.236 GB, free: 12.01 MB / 0.9981 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 1.383e-06/0.4094, allocations: 0 / 1.236 GB, free: 12.01 MB / 0.9981 GB Notification: Performance of matching and sorting (n=12) (initialization_lambda0): time 0.0003554/0.4097, allocations: 181.2 kB / 1.236 GB, free: 11.82 MB / 0.9981 GB Notification: Performance of prepare postOptimizeDAE: time 1.079e-05/0.4098, allocations: 4 kB / 1.236 GB, free: 11.82 MB / 0.9981 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 3.036e-06/0.4098, allocations: 4 kB / 1.236 GB, free: 11.82 MB / 0.9981 GB Notification: Performance of postOpt tearingSystem (initialization): time 5.931e-06/0.4098, allocations: 7.938 kB / 1.236 GB, free: 11.81 MB / 0.9981 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0001058/0.4099, allocations: 19.98 kB / 1.236 GB, free: 11.79 MB / 0.9981 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 4.178e-06/0.4099, allocations: 4 kB / 1.236 GB, free: 11.79 MB / 0.9981 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0001749/0.4101, allocations: 15.97 kB / 1.236 GB, free: 11.77 MB / 0.9981 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 1.616e-05/0.4101, allocations: 8 kB / 1.236 GB, free: 11.76 MB / 0.9981 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 2 * 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 (12): * Single equations (assignments): 12 * 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 0.0001085/0.4102, allocations: 192.2 kB / 1.237 GB, free: 11.57 MB / 0.9981 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 6.603e-05/0.4103, allocations: 39.47 kB / 1.237 GB, free: 11.53 MB / 0.9981 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.0004931/0.4108, allocations: 225.4 kB / 1.237 GB, free: 11.3 MB / 0.9981 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 7.524e-06/0.4108, allocations: 4.094 kB / 1.237 GB, free: 11.3 MB / 0.9981 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 5.26e-06/0.4108, allocations: 0 / 1.237 GB, free: 11.3 MB / 0.9981 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 7.244e-06/0.4108, allocations: 7.969 kB / 1.237 GB, free: 11.29 MB / 0.9981 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.0008867/0.4117, allocations: 0.6295 MB / 1.238 GB, free: 10.59 MB / 0.9981 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 5.059e-06/0.4117, allocations: 4 kB / 1.238 GB, free: 10.59 MB / 0.9981 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.000105/0.4118, allocations: 19.98 kB / 1.238 GB, free: 10.57 MB / 0.9981 GB Notification: Performance of postOpt tearingSystem (simulation): time 6.352e-06/0.4118, allocations: 4 kB / 1.238 GB, free: 10.57 MB / 0.9981 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 1.15e-05/0.4119, allocations: 0 / 1.238 GB, free: 10.57 MB / 0.9981 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 5.791e-06/0.4119, allocations: 4 kB / 1.238 GB, free: 10.56 MB / 0.9981 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.513e-06/0.4119, allocations: 4.031 kB / 1.238 GB, free: 10.56 MB / 0.9981 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.0004487/0.4123, allocations: 327.7 kB / 1.238 GB, free: 10.21 MB / 0.9981 GB Notification: Performance of postOpt removeConstants (simulation): time 0.000124/0.4125, allocations: 120.7 kB / 1.238 GB, free: 10.08 MB / 0.9981 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 3.88e-05/0.4125, allocations: 15.92 kB / 1.238 GB, free: 10.06 MB / 0.9981 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0001927/0.4127, allocations: 11.98 kB / 1.238 GB, free: 10.05 MB / 0.9981 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 4.693e-05/0.4128, allocations: 15.98 kB / 1.238 GB, free: 10.04 MB / 0.9981 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 1.673e-05/0.4128, allocations: 4 kB / 1.238 GB, free: 10.03 MB / 0.9981 GB Notification: Performance of sorting global known variables: time 0.000251/0.4131, allocations: 251.1 kB / 1.238 GB, free: 9.789 MB / 0.9981 GB Notification: Performance of sort global known variables: time 9e-08/0.4131, allocations: 0 / 1.238 GB, free: 9.789 MB / 0.9981 GB Notification: Performance of remove unused functions: time 0.0005972/0.4137, allocations: 195.5 kB / 1.238 GB, free: 9.598 MB / 0.9981 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 4 * 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 (14): * Single equations (assignments): 12 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 2 * When equations: 0 * 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 0.0005425/0.4142, allocations: 248.8 kB / 1.239 GB, free: 9.352 MB / 0.9981 GB Notification: Performance of simCode: created initialization part: time 0.000506/0.4147, allocations: 191.8 kB / 1.239 GB, free: 9.164 MB / 0.9981 GB Notification: Performance of simCode: created event and clocks part: time 2.504e-06/0.4147, allocations: 0 / 1.239 GB, free: 9.164 MB / 0.9981 GB Notification: Performance of simCode: created simulation system equations: time 0.0001783/0.4149, allocations: 83.88 kB / 1.239 GB, free: 9.082 MB / 0.9981 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.0007663/0.4157, allocations: 145.9 kB / 1.239 GB, free: 8.941 MB / 0.9981 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.000864/0.4166, allocations: 0.5556 MB / 1.24 GB, free: 8.348 MB / 0.9981 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.000346/0.4169, allocations: 0.7918 MB / 1.24 GB, free: 7.531 MB / 0.9981 GB Notification: Performance of simCode: alias equations: time 0.0002034/0.4171, allocations: 75.03 kB / 1.24 GB, free: 7.461 MB / 0.9981 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 5.648e-05/0.4172, allocations: 35.38 kB / 1.241 GB, free: 7.426 MB / 0.9981 GB Notification: Performance of SimCode: time 2.4e-07/0.4172, allocations: 3.938 kB / 1.241 GB, free: 7.422 MB / 0.9981 GB Notification: Performance of Templates: time 0.0133/0.4305, allocations: 6.685 MB / 1.247 GB, free: 0.832 MB / 0.9981 GB make -j1 -f Buildings_latest_Buildings.Fluid.FixedResistances.Examples.HydraulicDiameter.makefile (rm -f Buildings_latest_Buildings.Fluid.FixedResistances.Examples.HydraulicDiameter.pipe ; mkfifo Buildings_latest_Buildings.Fluid.FixedResistances.Examples.HydraulicDiameter.pipe ; head -c 1048576 < Buildings_latest_Buildings.Fluid.FixedResistances.Examples.HydraulicDiameter.pipe >> ../files/Buildings_latest_Buildings.Fluid.FixedResistances.Examples.HydraulicDiameter.sim & ./Buildings_latest_Buildings.Fluid.FixedResistances.Examples.HydraulicDiameter -abortSlowSimulation -alarm=480 -emit_protected -lv LOG_STATS > Buildings_latest_Buildings.Fluid.FixedResistances.Examples.HydraulicDiameter.pipe 2>&1) diffSimulationResults("Buildings_latest_Buildings.Fluid.FixedResistances.Examples.HydraulicDiameter_res.mat","/mnt/ReferenceFiles/Buildings/csv/master/Buildings_Fluid_FixedResistances_Examples_HydraulicDiameter.csv","/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/files/Buildings_latest_Buildings.Fluid.FixedResistances.Examples.HydraulicDiameter.diff",relTol=0.003,relTolDiffMinMax=0.003,rangeDelta=0.001) Reference file matches