Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_9_Buildings.Fluid.Movers.BaseClasses.Validation.FlowMachineInterface.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.BaseClasses.Validation.FlowMachineInterface,tolerance=1e-06,outputFormat="mat",numberOfIntervals=5000,variableFilter="time|eff.m_flow|eff.V_flow|eff.dp|eff.y_in|eff.WFlo|eff.PEle|eff.eta|eff.etaHyd|eff.etaMot",fileNamePrefix="Buildings_9_Buildings.Fluid.Movers.BaseClasses.Validation.FlowMachineInterface") translateModel(Buildings.Fluid.Movers.BaseClasses.Validation.FlowMachineInterface,tolerance=1e-06,outputFormat="mat",numberOfIntervals=5000,variableFilter="time|eff.m_flow|eff.V_flow|eff.dp|eff.y_in|eff.WFlo|eff.PEle|eff.eta|eff.etaHyd|eff.etaMot",fileNamePrefix="Buildings_9_Buildings.Fluid.Movers.BaseClasses.Validation.FlowMachineInterface") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001721/0.001721, allocations: 100.1 kB / 15.88 MB, free: 12 kB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.002146/0.002146, allocations: 200.3 kB / 16.79 MB, free: 6.809 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.43/1.43, allocations: 222.9 MB / 240.5 MB, free: 4.602 MB / 190.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 9.1.2-maint.9.1.x/package.mo): time 2.489/2.489, allocations: 390.2 MB / 0.6649 GB, free: 0.6367 MB / 0.5137 GB Notification: Performance of FrontEnd - loaded program: time 0.002699/0.002699, allocations: 67.88 kB / 0.8125 GB, free: 14.88 MB / 0.67 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.7645/0.7672, allocations: 140.4 MB / 0.9496 GB, free: 9.051 MB / 0.7169 GB Notification: Performance of NFInst.instantiate(Buildings.Fluid.Movers.BaseClasses.Validation.FlowMachineInterface): time 0.003118/0.7704, allocations: 2.097 MB / 0.9516 GB, free: 7.406 MB / 0.7169 GB Notification: Performance of NFInst.instExpressions: time 0.002895/0.7733, allocations: 2.047 MB / 0.9536 GB, free: 5.828 MB / 0.7169 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.000178/0.7735, allocations: 8.031 kB / 0.9536 GB, free: 5.824 MB / 0.7169 GB Notification: Performance of NFTyping.typeComponents: time 0.0007792/0.7743, allocations: 239.9 kB / 0.9539 GB, free: 5.68 MB / 0.7169 GB Notification: Performance of NFTyping.typeBindings: time 0.0006748/0.775, allocations: 260.9 kB / 0.9541 GB, free: 5.496 MB / 0.7169 GB Notification: Performance of NFTyping.typeClassSections: time 0.001021/0.7761, allocations: 422.4 kB / 0.9545 GB, free: 5.227 MB / 0.7169 GB Notification: Performance of NFFlatten.flatten: time 0.0007742/0.7769, allocations: 0.5874 MB / 0.9551 GB, free: 4.906 MB / 0.7169 GB Notification: Performance of NFFlatten.resolveConnections: time 0.000118/0.777, allocations: 38.3 kB / 0.9551 GB, free: 4.883 MB / 0.7169 GB Notification: Performance of NFEvalConstants.evaluate: time 0.0002327/0.7772, allocations: 153.7 kB / 0.9553 GB, free: 4.805 MB / 0.7169 GB Notification: Performance of NFSimplifyModel.simplify: time 0.0002696/0.7775, allocations: 172.2 kB / 0.9554 GB, free: 4.711 MB / 0.7169 GB Notification: Performance of NFPackage.collectConstants: time 2.973e-05/0.7776, allocations: 7.812 kB / 0.9554 GB, free: 4.711 MB / 0.7169 GB Notification: Performance of NFFlatten.collectFunctions: time 0.0007702/0.7783, allocations: 443.4 kB / 0.9559 GB, free: 4.465 MB / 0.7169 GB Notification: Performance of NFScalarize.scalarize: time 0.000102/0.7784, allocations: 92.94 kB / 0.956 GB, free: 4.41 MB / 0.7169 GB Notification: Performance of NFVerifyModel.verify: time 9.075e-05/0.7785, allocations: 108.4 kB / 0.9561 GB, free: 4.34 MB / 0.7169 GB Notification: Performance of NFConvertDAE.convert: time 0.0004681/0.779, allocations: 414.3 kB / 0.9565 GB, free: 4.078 MB / 0.7169 GB Notification: Performance of FrontEnd - DAE generated: time 3.987e-06/0.779, allocations: 0 / 0.9565 GB, free: 4.078 MB / 0.7169 GB Notification: Performance of FrontEnd: time 1.012e-06/0.779, allocations: 0 / 0.9565 GB, free: 4.078 MB / 0.7169 GB Notification: Performance of Transformations before backend: time 6.563e-06/0.779, allocations: 5.125 kB / 0.9565 GB, free: 4.074 MB / 0.7169 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 17 * Number of variables: 17 Notification: Performance of Generate backend data structure: time 0.0008755/0.7799, allocations: 0.5886 MB / 0.957 GB, free: 3.531 MB / 0.7169 GB Notification: Performance of prepare preOptimizeDAE: time 4.047e-05/0.78, allocations: 9.781 kB / 0.957 GB, free: 3.531 MB / 0.7169 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.00093/0.7809, allocations: 142.3 kB / 0.9572 GB, free: 3.473 MB / 0.7169 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.0004281/0.7813, allocations: 336.1 kB / 0.9575 GB, free: 3.16 MB / 0.7169 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 1.287e-05/0.7814, allocations: 8.484 kB / 0.9575 GB, free: 3.156 MB / 0.7169 GB Notification: Performance of preOpt expandDerOperator (simulation): time 2.829e-05/0.7814, allocations: 12.62 kB / 0.9575 GB, free: 3.152 MB / 0.7169 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.0005242/0.7819, allocations: 197.5 kB / 0.9577 GB, free: 3.035 MB / 0.7169 GB Notification: Performance of preOpt findStateOrder (simulation): time 1.009e-05/0.782, allocations: 3.938 kB / 0.9577 GB, free: 3.031 MB / 0.7169 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 2.261e-05/0.782, allocations: 5.375 kB / 0.9577 GB, free: 3.027 MB / 0.7169 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 6.683e-06/0.782, allocations: 1.375 kB / 0.9577 GB, free: 3.027 MB / 0.7169 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.000713/0.7827, allocations: 201 kB / 0.9579 GB, free: 2.945 MB / 0.7169 GB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.0009631/0.7837, allocations: 0.5443 MB / 0.9584 GB, free: 2.469 MB / 0.7169 GB Notification: Performance of preOpt comSubExp (simulation): time 0.0006921/0.7844, allocations: 208.5 kB / 0.9586 GB, free: 2.363 MB / 0.7169 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0003437/0.7847, allocations: 96.02 kB / 0.9587 GB, free: 2.32 MB / 0.7169 GB Notification: Performance of preOpt evalFunc (simulation): time 2.73e-05/0.7848, allocations: 5.297 kB / 0.9587 GB, free: 2.316 MB / 0.7169 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 2.079e-05/0.7848, allocations: 39.75 kB / 0.9588 GB, free: 2.27 MB / 0.7169 GB Notification: Performance of pre-optimization done (n=9): time 2.034e-06/0.7848, allocations: 0 / 0.9588 GB, free: 2.27 MB / 0.7169 GB Notification: Performance of matching and sorting (n=9): time 0.00124/0.7861, allocations: 346.8 kB / 0.9591 GB, free: 2.102 MB / 0.7169 GB Notification: Performance of inlineWhenForInitialization (initialization): time 4.003e-05/0.7861, allocations: 56.52 kB / 0.9592 GB, free: 2.035 MB / 0.7169 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0003464/0.7865, allocations: 339.5 kB / 0.9595 GB, free: 1.812 MB / 0.7169 GB Notification: Performance of collectPreVariables (initialization): time 2.391e-05/0.7865, allocations: 26.45 kB / 0.9595 GB, free: 1.781 MB / 0.7169 GB Notification: Performance of collectInitialEqns (initialization): time 8.127e-05/0.7866, allocations: 153.1 kB / 0.9597 GB, free: 1.641 MB / 0.7169 GB Notification: Performance of collectInitialBindings (initialization): time 3.428e-05/0.7866, allocations: 35.17 kB / 0.9597 GB, free: 1.609 MB / 0.7169 GB Notification: Performance of simplifyInitialFunctions (initialization): time 9.445e-05/0.7867, allocations: 50.41 kB / 0.9597 GB, free: 1.574 MB / 0.7169 GB Notification: Performance of setup shared object (initialization): time 6.299e-05/0.7868, allocations: 339.2 kB / 0.9601 GB, free: 1.242 MB / 0.7169 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0004266/0.7872, allocations: 157 kB / 0.9602 GB, free: 1.168 MB / 0.7169 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0004415/0.7877, allocations: 195 kB / 0.9604 GB, free: 1.043 MB / 0.7169 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0007948/0.7885, allocations: 348.2 kB / 0.9607 GB, free: 0.8438 MB / 0.7169 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 3.847e-06/0.7885, allocations: 9.219 kB / 0.9607 GB, free: 0.8359 MB / 0.7169 GB Notification: Performance of matching and sorting (n=20) (initialization): time 0.0009684/0.7895, allocations: 393.5 kB / 0.9611 GB, free: 0.6523 MB / 0.7169 GB Notification: Performance of prepare postOptimizeDAE: time 2.456e-05/0.7895, allocations: 5.688 kB / 0.9611 GB, free: 0.6523 MB / 0.7169 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.247e-05/0.7895, allocations: 7.031 kB / 0.9611 GB, free: 0.6484 MB / 0.7169 GB Notification: Performance of postOpt tearingSystem (initialization): time 2.322e-05/0.7896, allocations: 2.188 kB / 0.9611 GB, free: 0.6484 MB / 0.7169 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0003378/0.7899, allocations: 59.92 kB / 0.9612 GB, free: 0.6328 MB / 0.7169 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 1.007e-05/0.7899, allocations: 10.67 kB / 0.9612 GB, free: 0.625 MB / 0.7169 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0003098/0.7902, allocations: 46.97 kB / 0.9612 GB, free: 0.5977 MB / 0.7169 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 3.91e-05/0.7903, allocations: 15.39 kB / 0.9613 GB, free: 0.5938 MB / 0.7169 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.0004581/0.7907, allocations: 241.2 kB / 0.9615 GB, free: 452 kB / 0.7169 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.000388/0.7911, allocations: 191 kB / 0.9617 GB, free: 316 kB / 0.7169 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.0007189/0.7919, allocations: 295.4 kB / 0.9619 GB, free: 144 kB / 0.7169 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 3.136e-06/0.7919, allocations: 1.156 kB / 0.9619 GB, free: 144 kB / 0.7169 GB Notification: Performance of matching and sorting (n=20) (initialization_lambda0): time 0.0009421/0.7928, allocations: 365.2 kB / 0.9623 GB, free: 15.96 MB / 0.7325 GB Notification: Performance of prepare postOptimizeDAE: time 1.119e-05/0.7928, allocations: 5.969 kB / 0.9623 GB, free: 15.96 MB / 0.7325 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 4.608e-06/0.7929, allocations: 1.406 kB / 0.9623 GB, free: 15.96 MB / 0.7325 GB Notification: Performance of postOpt tearingSystem (initialization): time 5.17e-06/0.7929, allocations: 4.156 kB / 0.9623 GB, free: 15.96 MB / 0.7325 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0003023/0.7932, allocations: 65.55 kB / 0.9624 GB, free: 15.93 MB / 0.7325 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 3.987e-06/0.7932, allocations: 7.344 kB / 0.9624 GB, free: 15.93 MB / 0.7325 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0002799/0.7935, allocations: 36.12 kB / 0.9624 GB, free: 15.91 MB / 0.7325 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 2.95e-05/0.7935, allocations: 13.72 kB / 0.9624 GB, free: 15.91 MB / 0.7325 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 8 * 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 (19): * Single equations (assignments): 18 * Array equations: 1 * 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 0.0001478/0.7937, allocations: 191.8 kB / 0.9626 GB, free: 15.71 MB / 0.7325 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 6.229e-05/0.7937, allocations: 26.34 kB / 0.9626 GB, free: 15.7 MB / 0.7325 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.0009367/0.7947, allocations: 278.9 kB / 0.9629 GB, free: 15.55 MB / 0.7325 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 3.937e-06/0.7947, allocations: 1.156 kB / 0.9629 GB, free: 15.55 MB / 0.7325 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 6.913e-06/0.7947, allocations: 4.688 kB / 0.9629 GB, free: 15.54 MB / 0.7325 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 4.819e-06/0.7947, allocations: 3.984 kB / 0.9629 GB, free: 15.54 MB / 0.7325 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.0003539/0.7951, allocations: 284.7 kB / 0.9632 GB, free: 15.27 MB / 0.7325 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 1.783e-06/0.7951, allocations: 0 / 0.9632 GB, free: 15.27 MB / 0.7325 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0002515/0.7953, allocations: 45.52 kB / 0.9632 GB, free: 15.25 MB / 0.7325 GB Notification: Performance of postOpt tearingSystem (simulation): time 2.776e-06/0.7953, allocations: 0 / 0.9632 GB, free: 15.25 MB / 0.7325 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 1.567e-05/0.7954, allocations: 2.188 kB / 0.9632 GB, free: 15.25 MB / 0.7325 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 2.335e-06/0.7954, allocations: 1.156 kB / 0.9632 GB, free: 15.25 MB / 0.7325 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 3.286e-06/0.7954, allocations: 7.875 kB / 0.9632 GB, free: 15.24 MB / 0.7325 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.000809/0.7962, allocations: 356.2 kB / 0.9636 GB, free: 15 MB / 0.7325 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0001137/0.7963, allocations: 109.6 kB / 0.9637 GB, free: 14.89 MB / 0.7325 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 4.412e-05/0.7964, allocations: 5.156 kB / 0.9637 GB, free: 14.88 MB / 0.7325 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0002592/0.7966, allocations: 22.67 kB / 0.9637 GB, free: 14.88 MB / 0.7325 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 4.551e-05/0.7967, allocations: 11.02 kB / 0.9637 GB, free: 14.87 MB / 0.7325 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 1.74e-05/0.7967, allocations: 7.625 kB / 0.9637 GB, free: 14.86 MB / 0.7325 GB Notification: Performance of sorting global known variables: time 0.0002701/0.797, allocations: 240.7 kB / 0.9639 GB, free: 14.71 MB / 0.7325 GB Notification: Performance of sort global known variables: time 1.11e-07/0.797, allocations: 0 / 0.9639 GB, free: 14.71 MB / 0.7325 GB Notification: Performance of remove unused functions: time 0.0006849/0.7977, allocations: 150.1 kB / 0.9641 GB, free: 14.68 MB / 0.7325 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 (10): * Single equations (assignments): 10 * 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 0.0004965/0.7982, allocations: 202 kB / 0.9643 GB, free: 14.56 MB / 0.7325 GB Notification: Performance of simCode: created initialization part: time 0.001416/0.7996, allocations: 437.1 kB / 0.9647 GB, free: 14.38 MB / 0.7325 GB Notification: Performance of simCode: created event and clocks part: time 3.076e-06/0.7996, allocations: 5 kB / 0.9647 GB, free: 14.38 MB / 0.7325 GB Notification: Performance of simCode: created simulation system equations: time 0.0003722/0.8, allocations: 106.8 kB / 0.9648 GB, free: 14.34 MB / 0.7325 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.0005811/0.8006, allocations: 102.6 kB / 0.9649 GB, free: 14.29 MB / 0.7325 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.001141/0.8018, allocations: 0.5917 MB / 0.9655 GB, free: 13.87 MB / 0.7325 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0003754/0.8021, allocations: 0.7769 MB / 0.9662 GB, free: 13.11 MB / 0.7325 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0001415/0.8023, allocations: 31.08 kB / 0.9663 GB, free: 13.1 MB / 0.7325 GB Notification: Performance of SimCode: time 3.61e-07/0.8023, allocations: 0 / 0.9663 GB, free: 13.1 MB / 0.7325 GB Notification: Performance of Templates: time 0.009792/0.8121, allocations: 5.513 MB / 0.9717 GB, free: 10.29 MB / 0.7325 GB make -j1 -f Buildings_9_Buildings.Fluid.Movers.BaseClasses.Validation.FlowMachineInterface.makefile (rm -f Buildings_9_Buildings.Fluid.Movers.BaseClasses.Validation.FlowMachineInterface.pipe ; mkfifo Buildings_9_Buildings.Fluid.Movers.BaseClasses.Validation.FlowMachineInterface.pipe ; head -c 1048576 < Buildings_9_Buildings.Fluid.Movers.BaseClasses.Validation.FlowMachineInterface.pipe >> ../files/Buildings_9_Buildings.Fluid.Movers.BaseClasses.Validation.FlowMachineInterface.sim & ./Buildings_9_Buildings.Fluid.Movers.BaseClasses.Validation.FlowMachineInterface -abortSlowSimulation -alarm=480 -emit_protected -lv LOG_STATS > Buildings_9_Buildings.Fluid.Movers.BaseClasses.Validation.FlowMachineInterface.pipe 2>&1) diffSimulationResults("Buildings_9_Buildings.Fluid.Movers.BaseClasses.Validation.FlowMachineInterface_res.mat","/mnt/ReferenceFiles/Buildings/csv/maint_9.1.x/Buildings_Fluid_Movers_BaseClasses_Validation_FlowMachineInterface.csv","/var/lib/jenkins1/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/files/Buildings_9_Buildings.Fluid.Movers.BaseClasses.Validation.FlowMachineInterface.diff",relTol=0.003,relTolDiffMinMax=0.003,rangeDelta=0.001) Reference file matches