Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_11_Buildings.Fluid.Movers.BaseClasses.Validation.EulerComparison.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 11.1.0-maint.11.x/package.mo", uses=false) Using package Buildings with version 11.1.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 11.1.0-maint.11.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.BaseClasses.Validation.EulerComparison,fileNamePrefix="Buildings_11_Buildings_Fluid_Movers_BaseClasses_Validation_EulerComparison",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(Buildings.Fluid.Movers.BaseClasses.Validation.EulerComparison,fileNamePrefix="Buildings_11_Buildings_Fluid_Movers_BaseClasses_Validation_EulerComparison",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 0.005026/0.005027, allocations: 98.8 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 0.001382/0.001382, allocations: 194.5 kB / 16.68 MB, free: 5.969 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.26/1.26, allocations: 222.9 MB / 240.4 MB, free: 4.324 MB / 190.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 11.1.0-maint.11.x/package.mo): time 2.509/2.509, allocations: 469.8 MB / 0.7425 GB, free: 7.293 MB / 0.5919 GB Notification: Performance of FrontEnd - loaded program: time 0.001702/0.001702, allocations: 59.91 kB / 1.065 GB, free: 13.56 MB / 0.8262 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.2623/0.2641, allocations: 159.1 MB / 1.22 GB, free: 14.3 MB / 0.9825 GB Notification: Performance of NFInst.instantiate(Buildings.Fluid.Movers.BaseClasses.Validation.EulerComparison): time 0.004905/0.269, allocations: 3.77 MB / 1.224 GB, free: 10.51 MB / 0.9825 GB Notification: Performance of NFInst.instExpressions: time 0.007316/0.2763, allocations: 4.881 MB / 1.229 GB, free: 5.613 MB / 0.9825 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.000356/0.2767, allocations: 15.94 kB / 1.229 GB, free: 5.598 MB / 0.9825 GB Notification: Performance of NFTyping.typeComponents: time 0.003018/0.2798, allocations: 1.409 MB / 1.23 GB, free: 4.188 MB / 0.9825 GB Notification: Performance of NFTyping.typeBindings: time 0.001317/0.2811, allocations: 0.7859 MB / 1.231 GB, free: 3.398 MB / 0.9825 GB Notification: Performance of NFTyping.typeClassSections: time 0.001473/0.2826, allocations: 0.8422 MB / 1.232 GB, free: 2.555 MB / 0.9825 GB Notification: Performance of NFFlatten.flatten: time 0.01729/0.2999, allocations: 12.79 MB / 1.244 GB, free: 5.75 MB / 0.9981 GB Notification: Performance of NFFlatten.resolveConnections: time 0.0002375/0.3001, allocations: 101.7 kB / 1.244 GB, free: 5.645 MB / 0.9981 GB Notification: Performance of NFEvalConstants.evaluate: time 0.0008249/0.301, allocations: 0.5606 MB / 1.245 GB, free: 5.082 MB / 0.9981 GB Notification: Performance of NFSimplifyModel.simplify: time 0.000667/0.3016, allocations: 0.5915 MB / 1.245 GB, free: 4.488 MB / 0.9981 GB Notification: Performance of NFPackage.collectConstants: time 0.0001184/0.3018, allocations: 68 kB / 1.245 GB, free: 4.422 MB / 0.9981 GB Notification: Performance of NFFlatten.collectFunctions: time 0.00133/0.3031, allocations: 0.8268 MB / 1.246 GB, free: 3.594 MB / 0.9981 GB Notification: Performance of NFScalarize.scalarize: time 0.000631/0.3038, allocations: 0.8064 MB / 1.247 GB, free: 2.785 MB / 0.9981 GB Notification: Performance of NFVerifyModel.verify: time 0.0007397/0.3045, allocations: 0.8548 MB / 1.248 GB, free: 1.926 MB / 0.9981 GB Notification: Performance of NFConvertDAE.convert: time 0.4933/0.7978, allocations: 2.622 MB / 1.25 GB, free: 19.39 MB / 0.9981 GB Notification: Performance of FrontEnd - DAE generated: time 6.232e-06/0.7978, allocations: 0.75 kB / 1.25 GB, free: 19.39 MB / 0.9981 GB Notification: Performance of FrontEnd: time 1.773e-06/0.7979, allocations: 1.641 kB / 1.25 GB, free: 19.39 MB / 0.9981 GB Notification: Performance of Transformations before backend: time 4.28e-05/0.7979, allocations: 0 / 1.25 GB, free: 19.39 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: 44 * Number of variables: 44 Notification: Performance of Generate backend data structure: time 0.003342/0.8013, allocations: 2.316 MB / 1.253 GB, free: 18.08 MB / 0.9981 GB Notification: Performance of prepare preOptimizeDAE: time 3.474e-05/0.8013, allocations: 11.56 kB / 1.253 GB, free: 18.08 MB / 0.9981 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 4.57e-05/0.8013, allocations: 51.95 kB / 1.253 GB, free: 18.04 MB / 0.9981 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.002233/0.8036, allocations: 0.4947 MB / 1.253 GB, free: 17.93 MB / 0.9981 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.007152/0.8107, allocations: 5.645 MB / 1.259 GB, free: 17.36 MB / 0.9981 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 2.331e-05/0.8108, allocations: 27.55 kB / 1.259 GB, free: 17.36 MB / 0.9981 GB Notification: Performance of preOpt expandDerOperator (simulation): time 6.344e-05/0.8109, allocations: 31.91 kB / 1.259 GB, free: 17.36 MB / 0.9981 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.001091/0.8119, allocations: 0.6513 MB / 1.259 GB, free: 17.32 MB / 0.9981 GB Notification: Performance of preOpt findStateOrder (simulation): time 1.1e-05/0.812, allocations: 3.125 kB / 1.259 GB, free: 17.32 MB / 0.9981 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 4.159e-05/0.812, allocations: 11.78 kB / 1.259 GB, free: 17.32 MB / 0.9981 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 6.302e-06/0.812, allocations: 6.219 kB / 1.259 GB, free: 17.32 MB / 0.9981 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.001319/0.8134, allocations: 0.5256 MB / 1.26 GB, free: 17.32 MB / 0.9981 GB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.002965/0.8163, allocations: 2.324 MB / 1.262 GB, free: 16.93 MB / 0.9981 GB Notification: Performance of preOpt comSubExp (simulation): time 0.001421/0.8178, allocations: 0.6967 MB / 1.263 GB, free: 16.91 MB / 0.9981 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0006388/0.8184, allocations: 280.5 kB / 1.263 GB, free: 16.9 MB / 0.9981 GB Notification: Performance of preOpt evalFunc (simulation): time 3.31e-05/0.8184, allocations: 8.094 kB / 1.263 GB, free: 16.9 MB / 0.9981 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 1.418e-05/0.8185, allocations: 32.47 kB / 1.263 GB, free: 16.86 MB / 0.9981 GB Notification: Performance of pre-optimization done (n=21): time 1.512e-06/0.8185, allocations: 0 / 1.263 GB, free: 16.86 MB / 0.9981 GB Notification: Performance of matching and sorting (n=21): time 0.002563/0.821, allocations: 1.043 MB / 1.264 GB, free: 16.7 MB / 0.9981 GB Notification: Performance of inlineWhenForInitialization (initialization): time 2.442e-05/0.8211, allocations: 54.48 kB / 1.264 GB, free: 16.64 MB / 0.9981 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.003454/0.8245, allocations: 2.987 MB / 1.267 GB, free: 16.37 MB / 0.9981 GB Notification: Performance of collectPreVariables (initialization): time 5.488e-05/0.8246, allocations: 36.11 kB / 1.267 GB, free: 16.34 MB / 0.9981 GB Notification: Performance of collectInitialEqns (initialization): time 0.000483/0.8251, allocations: 0.6918 MB / 1.268 GB, free: 16.2 MB / 0.9981 GB Notification: Performance of collectInitialBindings (initialization): time 7.036e-05/0.8252, allocations: 79.95 kB / 1.268 GB, free: 16.16 MB / 0.9981 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0005346/0.8257, allocations: 351.8 kB / 1.268 GB, free: 16.13 MB / 0.9981 GB Notification: Performance of setup shared object (initialization): time 3.557e-05/0.8257, allocations: 305.2 kB / 1.269 GB, free: 15.83 MB / 0.9981 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.001798/0.8276, allocations: 1.1 MB / 1.27 GB, free: 15.81 MB / 0.9981 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.001633/0.8292, allocations: 1.443 MB / 1.271 GB, free: 15.27 MB / 0.9981 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.002824/0.832, allocations: 2.319 MB / 1.273 GB, free: 14.32 MB / 0.9981 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 5.821e-06/0.832, allocations: 4.25 kB / 1.273 GB, free: 14.32 MB / 0.9981 GB Notification: Performance of matching and sorting (n=196) (initialization): time 0.003742/0.8358, allocations: 2.752 MB / 1.276 GB, free: 13.41 MB / 0.9981 GB Notification: Performance of prepare postOptimizeDAE: time 1.851e-05/0.8358, allocations: 13.62 kB / 1.276 GB, free: 13.41 MB / 0.9981 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.3e-05/0.8358, allocations: 10.81 kB / 1.276 GB, free: 13.41 MB / 0.9981 GB Notification: Performance of postOpt tearingSystem (initialization): time 2.378e-05/0.8359, allocations: 14.38 kB / 1.276 GB, free: 13.41 MB / 0.9981 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0009413/0.8368, allocations: 257.9 kB / 1.276 GB, free: 13.39 MB / 0.9981 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 1.704e-05/0.8368, allocations: 15.52 kB / 1.276 GB, free: 13.39 MB / 0.9981 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0014/0.8382, allocations: 213.5 kB / 1.277 GB, free: 13.3 MB / 0.9981 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001164/0.8384, allocations: 75.7 kB / 1.277 GB, free: 13.29 MB / 0.9981 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.001778/0.8402, allocations: 1.396 MB / 1.278 GB, free: 12.77 MB / 0.9981 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.001469/0.8416, allocations: 1.296 MB / 1.279 GB, free: 12.12 MB / 0.9981 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.002487/0.8441, allocations: 2.019 MB / 1.281 GB, free: 11.27 MB / 0.9981 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 4.088e-06/0.8441, allocations: 2.906 kB / 1.281 GB, free: 11.27 MB / 0.9981 GB Notification: Performance of matching and sorting (n=196) (initialization_lambda0): time 0.003327/0.8475, allocations: 2.438 MB / 1.284 GB, free: 10.45 MB / 0.9981 GB Notification: Performance of prepare postOptimizeDAE: time 1.275e-05/0.8475, allocations: 8.594 kB / 1.284 GB, free: 10.45 MB / 0.9981 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 9.127e-06/0.8475, allocations: 7.594 kB / 1.284 GB, free: 10.45 MB / 0.9981 GB Notification: Performance of postOpt tearingSystem (initialization): time 1.205e-05/0.8475, allocations: 15.38 kB / 1.284 GB, free: 10.45 MB / 0.9981 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0008916/0.8484, allocations: 249.4 kB / 1.284 GB, free: 10.43 MB / 0.9981 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 1.471e-05/0.8484, allocations: 18.33 kB / 1.284 GB, free: 10.43 MB / 0.9981 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001386/0.8498, allocations: 192.1 kB / 1.284 GB, free: 10.36 MB / 0.9981 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 9.429e-05/0.8499, allocations: 75.52 kB / 1.284 GB, free: 10.35 MB / 0.9981 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 31 * 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): 116 * Array equations: 2 * 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 prepare postOptimizeDAE: time 0.0002052/0.8502, allocations: 225.2 kB / 1.284 GB, free: 10.15 MB / 0.9981 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0001921/0.8504, allocations: 187.1 kB / 1.284 GB, free: 10.04 MB / 0.9981 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.001856/0.8522, allocations: 0.7972 MB / 1.285 GB, free: 9.785 MB / 0.9981 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 4.168e-06/0.8522, allocations: 3.062 kB / 1.285 GB, free: 9.785 MB / 0.9981 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 5.501e-06/0.8522, allocations: 1.781 kB / 1.285 GB, free: 9.785 MB / 0.9981 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 4.578e-06/0.8523, allocations: 4.969 kB / 1.285 GB, free: 9.785 MB / 0.9981 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.001082/0.8533, allocations: 1.075 MB / 1.286 GB, free: 9.285 MB / 0.9981 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 2.484e-06/0.8533, allocations: 0.7969 kB / 1.286 GB, free: 9.285 MB / 0.9981 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0004808/0.8538, allocations: 89.05 kB / 1.286 GB, free: 9.277 MB / 0.9981 GB Notification: Performance of postOpt tearingSystem (simulation): time 3.486e-06/0.8538, allocations: 5.094 kB / 1.286 GB, free: 9.273 MB / 0.9981 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 2.946e-05/0.8539, allocations: 12.67 kB / 1.286 GB, free: 9.27 MB / 0.9981 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 2.224e-06/0.8539, allocations: 5.594 kB / 1.286 GB, free: 9.266 MB / 0.9981 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 2.054e-06/0.8539, allocations: 4.797 kB / 1.286 GB, free: 9.262 MB / 0.9981 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.001539/0.8554, allocations: 0.8686 MB / 1.287 GB, free: 8.875 MB / 0.9981 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0004091/0.8559, allocations: 381.1 kB / 1.288 GB, free: 8.605 MB / 0.9981 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0002044/0.8561, allocations: 10.06 kB / 1.288 GB, free: 8.598 MB / 0.9981 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0008736/0.8569, allocations: 90.67 kB / 1.288 GB, free: 8.586 MB / 0.9981 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 5.099e-05/0.857, allocations: 16.81 kB / 1.288 GB, free: 8.586 MB / 0.9981 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 3.671e-05/0.857, allocations: 20.14 kB / 1.288 GB, free: 8.582 MB / 0.9981 GB Notification: Performance of sorting global known variables: time 0.002272/0.8593, allocations: 2.064 MB / 1.29 GB, free: 7.816 MB / 0.9981 GB Notification: Performance of sort global known variables: time 1.5e-07/0.8593, allocations: 1.188 kB / 1.29 GB, free: 7.816 MB / 0.9981 GB Notification: Performance of remove unused functions: time 0.001526/0.8609, allocations: 0.6885 MB / 1.29 GB, free: 7.746 MB / 0.9981 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 1 * 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 (23): * Single equations (assignments): 23 * 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 Backend phase and start with SimCode phase: time 0.002269/0.8631, allocations: 1.679 MB / 1.292 GB, free: 6.797 MB / 0.9981 GB Notification: Performance of simCode: created initialization part: time 0.003979/0.8671, allocations: 2.771 MB / 1.295 GB, free: 5.973 MB / 0.9981 GB Notification: Performance of simCode: created event and clocks part: time 2.064e-06/0.8671, allocations: 1.75 kB / 1.295 GB, free: 5.973 MB / 0.9981 GB Notification: Performance of simCode: created simulation system equations: time 0.0006878/0.8678, allocations: 297.7 kB / 1.295 GB, free: 5.91 MB / 0.9981 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.002553/0.8704, allocations: 0.9079 MB / 1.296 GB, free: 5.637 MB / 0.9981 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.02429/0.8947, allocations: 19.46 MB / 1.315 GB, free: 13.91 MB / 1.014 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.001229/0.896, allocations: 1.409 MB / 1.316 GB, free: 13.07 MB / 1.014 GB Notification: Performance of simCode: alias equations: time 0.002016/0.898, allocations: 0.5298 MB / 1.317 GB, free: 12.95 MB / 1.014 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0009858/0.899, allocations: 0.6622 MB / 1.318 GB, free: 12.45 MB / 1.014 GB Notification: Performance of SimCode: time 7.82e-07/0.899, allocations: 0 / 1.318 GB, free: 12.45 MB / 1.014 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 2.086/2.985, allocations: 54.81 MB / 1.371 GB, free: 13.83 MB / 1.061 GB Notification: Performance of buildModelFMU: Generate platform static: time 16.59/19.58, allocations: 7.938 kB / 1.371 GB, free: 13.82 MB / 1.061 GB (rm -f Buildings_11_Buildings.Fluid.Movers.BaseClasses.Validation.EulerComparison.pipe ; mkfifo Buildings_11_Buildings.Fluid.Movers.BaseClasses.Validation.EulerComparison.pipe ; head -c 1048576 < Buildings_11_Buildings.Fluid.Movers.BaseClasses.Validation.EulerComparison.pipe >> ../files/Buildings_11_Buildings.Fluid.Movers.BaseClasses.Validation.EulerComparison.sim & /home/hudson/saved_omc/OMSimulator/install/bin/OMSimulator -r=Buildings_11_Buildings.Fluid.Movers.BaseClasses.Validation.EulerComparison_res.mat --tempDir=temp_Buildings_11_Buildings_Fluid_Movers_BaseClasses_Validation_EulerComparison_fmu --startTime=0 --stopTime=1 --timeout=400 --tolerance=1e-06 Buildings_11_Buildings_Fluid_Movers_BaseClasses_Validation_EulerComparison.fmu > Buildings_11_Buildings.Fluid.Movers.BaseClasses.Validation.EulerComparison.pipe 2>&1) diffSimulationResults("Buildings_11_Buildings.Fluid.Movers.BaseClasses.Validation.EulerComparison_res.mat","/mnt/ReferenceFiles/Buildings/csv/maint_11.x/Buildings_Fluid_Movers_BaseClasses_Validation_EulerComparison.csv","/var/lib/jenkins1/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/files/Buildings_11_Buildings.Fluid.Movers.BaseClasses.Validation.EulerComparison.diff",relTol=0.003,relTolDiffMinMax=0.003,rangeDelta=0.001) Reference file matches