Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_latest_Buildings.Fluid.DXSystems.Cooling.BaseClasses.Examples.ApparatusDryPoint.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.DXSystems.Cooling.BaseClasses.Examples.ApparatusDryPoint,tolerance=1e-06,outputFormat="mat",numberOfIntervals=5000,variableFilter="time|m_flow.y|appDryPt.TDry|appDryPt.hDry|appDryPt.hEvaIn|Q_flow.y",fileNamePrefix="Buildings_latest_Buildings.Fluid.DXSystems.Cooling.BaseClasses.Examples.ApparatusDryPoint") translateModel(Buildings.Fluid.DXSystems.Cooling.BaseClasses.Examples.ApparatusDryPoint,tolerance=1e-06,outputFormat="mat",numberOfIntervals=5000,variableFilter="time|m_flow.y|appDryPt.TDry|appDryPt.hDry|appDryPt.hEvaIn|Q_flow.y",fileNamePrefix="Buildings_latest_Buildings.Fluid.DXSystems.Cooling.BaseClasses.Examples.ApparatusDryPoint") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001218/0.001218, allocations: 110.6 kB / 16.41 MB, free: 6.445 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001166/0.001166, allocations: 187 kB / 17.34 MB, free: 5.742 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.402/1.402, allocations: 222.9 MB / 241 MB, free: 15.16 MB / 206.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 11.0.1-master/package.mo): time 2.622/2.622, allocations: 461.9 MB / 0.7355 GB, free: 11.09 MB / 0.6075 GB Notification: Performance of FrontEnd - loaded program: time 0.001644/0.001644, allocations: 63.91 kB / 1.055 GB, free: 7.691 MB / 0.8262 GB Notification: Performance of FrontEnd - Absyn->SCode: time 1.1/1.101, allocations: 157.4 MB / 1.208 GB, free: 13.64 MB / 0.9356 GB Notification: Performance of NFInst.instantiate(Buildings.Fluid.DXSystems.Cooling.BaseClasses.Examples.ApparatusDryPoint): time 0.004643/1.106, allocations: 2.952 MB / 1.211 GB, free: 10.68 MB / 0.9356 GB Notification: Performance of NFInst.instExpressions: time 0.1783/1.284, allocations: 154.7 MB / 1.362 GB, free: 15.42 MB / 1.092 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.0005019/1.285, allocations: 4 kB / 1.362 GB, free: 15.41 MB / 1.092 GB Notification: Performance of NFTyping.typeComponents: time 0.001996/1.287, allocations: 0.5423 MB / 1.363 GB, free: 14.87 MB / 1.092 GB Notification: Performance of NFTyping.typeBindings: time 0.002691/1.29, allocations: 0.6724 MB / 1.364 GB, free: 14.2 MB / 1.092 GB Notification: Performance of NFTyping.typeClassSections: time 0.002096/1.292, allocations: 0.6582 MB / 1.364 GB, free: 13.54 MB / 1.092 GB Notification: Performance of NFFlatten.flatten: time 0.001871/1.294, allocations: 1.334 MB / 1.366 GB, free: 12.2 MB / 1.092 GB Notification: Performance of NFFlatten.resolveConnections: time 0.0003602/1.294, allocations: 194.5 kB / 1.366 GB, free: 12 MB / 1.092 GB Notification: Performance of NFEvalConstants.evaluate: time 0.0009195/1.295, allocations: 0.5019 MB / 1.366 GB, free: 11.49 MB / 1.092 GB Notification: Performance of NFSimplifyModel.simplify: time 0.001327/1.296, allocations: 0.6265 MB / 1.367 GB, free: 10.86 MB / 1.092 GB Notification: Performance of NFPackage.collectConstants: time 0.000366/1.297, allocations: 100 kB / 1.367 GB, free: 10.77 MB / 1.092 GB Notification: Performance of NFFlatten.collectFunctions: time 0.002776/1.3, allocations: 1.185 MB / 1.368 GB, free: 9.578 MB / 1.092 GB Notification: Performance of NFScalarize.scalarize: time 0.0005473/1.3, allocations: 394.7 kB / 1.368 GB, free: 9.191 MB / 1.092 GB Notification: Performance of NFVerifyModel.verify: time 0.001242/1.301, allocations: 0.6761 MB / 1.369 GB, free: 8.512 MB / 1.092 GB Notification: Performance of NFConvertDAE.convert: time 0.004606/1.306, allocations: 2.816 MB / 1.372 GB, free: 5.688 MB / 1.092 GB Notification: Performance of FrontEnd - DAE generated: time 5.29e-06/1.306, allocations: 4 kB / 1.372 GB, free: 5.684 MB / 1.092 GB Notification: Performance of FrontEnd: time 2.094e-06/1.306, allocations: 0 / 1.372 GB, free: 5.684 MB / 1.092 GB Notification: Performance of Transformations before backend: time 6.187e-05/1.306, allocations: 0 / 1.372 GB, free: 5.684 MB / 1.092 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 34 * Number of variables: 34 Notification: Performance of Generate backend data structure: time 0.00559/1.312, allocations: 2.069 MB / 1.374 GB, free: 3.551 MB / 1.092 GB Notification: Performance of prepare preOptimizeDAE: time 4.501e-05/1.312, allocations: 11.97 kB / 1.374 GB, free: 3.539 MB / 1.092 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.01654/1.328, allocations: 1.774 MB / 1.376 GB, free: 1.762 MB / 1.092 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.002959/1.331, allocations: 1.448 MB / 1.377 GB, free: 272 kB / 1.092 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 2.203e-05/1.331, allocations: 16 kB / 1.377 GB, free: 256 kB / 1.092 GB Notification: Performance of preOpt expandDerOperator (simulation): time 9.447e-05/1.331, allocations: 24 kB / 1.377 GB, free: 232 kB / 1.092 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.005364/1.337, allocations: 1.019 MB / 1.378 GB, free: 15.19 MB / 1.107 GB Notification: Performance of preOpt findStateOrder (simulation): time 1.101e-05/1.337, allocations: 4 kB / 1.378 GB, free: 15.19 MB / 1.107 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 5.998e-05/1.337, allocations: 4 kB / 1.378 GB, free: 15.18 MB / 1.107 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 9.879e-06/1.337, allocations: 4 kB / 1.378 GB, free: 15.18 MB / 1.107 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.009728/1.347, allocations: 1.654 MB / 1.38 GB, free: 13.52 MB / 1.107 GB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.01081/1.357, allocations: 3.47 MB / 1.383 GB, free: 9.895 MB / 1.107 GB Notification: Performance of preOpt comSubExp (simulation): time 0.01014/1.368, allocations: 1.778 MB / 1.385 GB, free: 8.105 MB / 1.107 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.004949/1.373, allocations: 0.8434 MB / 1.386 GB, free: 7.258 MB / 1.107 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0007518/1.373, allocations: 0.5259 MB / 1.386 GB, free: 6.621 MB / 1.107 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.005075/1.379, allocations: 0.9685 MB / 1.387 GB, free: 5.633 MB / 1.107 GB Notification: Performance of pre-optimization done (n=23): time 3.697e-06/1.379, allocations: 0 / 1.387 GB, free: 5.633 MB / 1.107 GB Notification: Performance of matching and sorting (n=23): time 0.01648/1.395, allocations: 2.715 MB / 1.39 GB, free: 2.902 MB / 1.107 GB Notification: Performance of inlineWhenForInitialization (initialization): time 0.000107/1.395, allocations: 110.8 kB / 1.39 GB, free: 2.77 MB / 1.107 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.005822/1.401, allocations: 2.48 MB / 1.392 GB, free: 292 kB / 1.107 GB Notification: Performance of collectPreVariables (initialization): time 0.000215/1.401, allocations: 33.7 kB / 1.392 GB, free: 252 kB / 1.107 GB Notification: Performance of collectInitialEqns (initialization): time 0.0008931/1.402, allocations: 0.5977 MB / 1.393 GB, free: 15.64 MB / 1.123 GB Notification: Performance of collectInitialBindings (initialization): time 0.0001648/1.402, allocations: 63.02 kB / 1.393 GB, free: 15.58 MB / 1.123 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0003961/1.403, allocations: 121.6 kB / 1.393 GB, free: 15.46 MB / 1.123 GB Notification: Performance of setup shared object (initialization): time 0.0001576/1.403, allocations: 322 kB / 1.393 GB, free: 15.14 MB / 1.123 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.005295/1.408, allocations: 0.9844 MB / 1.394 GB, free: 14.15 MB / 1.123 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.005302/1.414, allocations: 1.011 MB / 1.395 GB, free: 13.13 MB / 1.123 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.009405/1.423, allocations: 1.673 MB / 1.397 GB, free: 11.44 MB / 1.123 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 6.171e-06/1.423, allocations: 7.938 kB / 1.397 GB, free: 11.43 MB / 1.123 GB Notification: Performance of matching and sorting (n=49) (initialization): time 0.01293/1.436, allocations: 2.533 MB / 1.399 GB, free: 8.867 MB / 1.123 GB Notification: Performance of prepare postOptimizeDAE: time 6.274e-05/1.436, allocations: 37.69 kB / 1.399 GB, free: 8.824 MB / 1.123 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.146e-05/1.436, allocations: 4 kB / 1.399 GB, free: 8.82 MB / 1.123 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.003771/1.44, allocations: 0.803 MB / 1.4 GB, free: 8.004 MB / 1.123 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.003454/1.443, allocations: 403.3 kB / 1.401 GB, free: 7.609 MB / 1.123 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.0106/1.454, allocations: 7.955 MB / 1.408 GB, free: 15.09 MB / 1.139 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.003718/1.458, allocations: 367 kB / 1.409 GB, free: 14.73 MB / 1.139 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.000191/1.458, allocations: 35.97 kB / 1.409 GB, free: 14.69 MB / 1.139 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.006352/1.464, allocations: 1.483 MB / 1.41 GB, free: 13.2 MB / 1.139 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.005311/1.47, allocations: 0.9952 MB / 1.411 GB, free: 12.2 MB / 1.139 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.009659/1.479, allocations: 1.654 MB / 1.413 GB, free: 10.53 MB / 1.139 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 4.749e-06/1.479, allocations: 0 / 1.413 GB, free: 10.53 MB / 1.139 GB Notification: Performance of matching and sorting (n=49) (initialization_lambda0): time 0.01198/1.491, allocations: 2.35 MB / 1.415 GB, free: 8.152 MB / 1.139 GB Notification: Performance of prepare postOptimizeDAE: time 5.289e-05/1.491, allocations: 43.41 kB / 1.415 GB, free: 8.105 MB / 1.139 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 8.817e-06/1.491, allocations: 3.938 kB / 1.415 GB, free: 8.102 MB / 1.139 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.002344/1.494, allocations: 0.6198 MB / 1.416 GB, free: 7.469 MB / 1.139 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.003286/1.497, allocations: 403.3 kB / 1.416 GB, free: 7.074 MB / 1.139 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.007327/1.504, allocations: 6.618 MB / 1.423 GB, free: 15.89 MB / 1.154 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.003597/1.508, allocations: 355.2 kB / 1.423 GB, free: 15.55 MB / 1.154 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001728/1.508, allocations: 35.97 kB / 1.423 GB, free: 15.51 MB / 1.154 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 1 * Number of states: 0 () * Number of discrete variables: 10 (deaBan.y,$PRE.deaBan.y,speRat.nextEventScaled,speRat.nextEvent,$PRE.speRat.nextEvent,speRat.last,speRat.b,speRat.a,appDryPt.stage,$whenCondition1) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (36): * Single equations (assignments): 31 * Array equations: 0 * Algorithm blocks: 1 * 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 {(1,2), (1,2), (1,2), (1,2)} Notification: Performance of prepare postOptimizeDAE: time 0.0004441/1.509, allocations: 237.9 kB / 1.423 GB, free: 15.27 MB / 1.154 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0005882/1.509, allocations: 146.2 kB / 1.423 GB, free: 15.12 MB / 1.154 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.01071/1.52, allocations: 1.956 MB / 1.425 GB, free: 13.14 MB / 1.154 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 8.596e-06/1.52, allocations: 4 kB / 1.425 GB, free: 13.14 MB / 1.154 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 2.555e-06/1.52, allocations: 0 / 1.425 GB, free: 13.14 MB / 1.154 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 8.456e-06/1.52, allocations: 3.984 kB / 1.425 GB, free: 13.14 MB / 1.154 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.002352/1.522, allocations: 1.271 MB / 1.427 GB, free: 11.79 MB / 1.154 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 5.28e-06/1.522, allocations: 0 / 1.427 GB, free: 11.79 MB / 1.154 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.002777/1.525, allocations: 351.5 kB / 1.427 GB, free: 11.45 MB / 1.154 GB Notification: Performance of postOpt tearingSystem (simulation): time 8.846e-06/1.525, allocations: 0 / 1.427 GB, free: 11.45 MB / 1.154 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 7.258e-05/1.525, allocations: 15.97 kB / 1.427 GB, free: 11.43 MB / 1.154 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 5.15e-06/1.525, allocations: 4 kB / 1.427 GB, free: 11.43 MB / 1.154 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.744e-06/1.525, allocations: 0 / 1.427 GB, free: 11.43 MB / 1.154 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.01041/1.536, allocations: 1.87 MB / 1.429 GB, free: 9.531 MB / 1.154 GB Notification: Performance of postOpt removeConstants (simulation): time 0.001015/1.537, allocations: 427 kB / 1.429 GB, free: 9.094 MB / 1.154 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0004974/1.537, allocations: 8 kB / 1.429 GB, free: 9.086 MB / 1.154 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.003181/1.541, allocations: 295.5 kB / 1.429 GB, free: 8.797 MB / 1.154 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001053/1.541, allocations: 27.95 kB / 1.429 GB, free: 8.77 MB / 1.154 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 7.327e-05/1.541, allocations: 23.98 kB / 1.429 GB, free: 8.746 MB / 1.154 GB Notification: Performance of sorting global known variables: time 0.003568/1.544, allocations: 1.768 MB / 1.431 GB, free: 6.984 MB / 1.154 GB Notification: Performance of sort global known variables: time 6.01e-07/1.544, allocations: 4 kB / 1.431 GB, free: 6.98 MB / 1.154 GB Notification: Performance of remove unused functions: time 0.002314/1.547, allocations: 0.543 MB / 1.432 GB, free: 6.438 MB / 1.154 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 1 * Number of states: 0 () * Number of discrete variables: 8 ($whenCondition1,appDryPt.stage,speRat.a,speRat.b,speRat.last,speRat.nextEvent,speRat.nextEventScaled,deaBan.y) * Number of discrete states: 7 (deaBan.y,speRat.nextEvent,speRat.last,speRat.nextEventScaled,speRat.b,speRat.a,$whenCondition1) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (20): * Single equations (assignments): 19 * Array equations: 0 * Algorithm blocks: 1 * 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 0.0006908/1.547, allocations: 246.4 kB / 1.432 GB, free: 6.191 MB / 1.154 GB Notification: Performance of simCode: created initialization part: time 0.01781/1.565, allocations: 4.371 MB / 1.436 GB, free: 1.691 MB / 1.154 GB Notification: Performance of simCode: created event and clocks part: time 6.553e-06/1.565, allocations: 0 / 1.436 GB, free: 1.691 MB / 1.154 GB Notification: Performance of simCode: created simulation system equations: time 0.005005/1.57, allocations: 0.9474 MB / 1.437 GB, free: 0.7305 MB / 1.154 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.002222/1.572, allocations: 372.5 kB / 1.437 GB, free: 376 kB / 1.154 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.02221/1.595, allocations: 4.511 MB / 1.442 GB, free: 11.82 MB / 1.17 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.001313/1.596, allocations: 1.411 MB / 1.443 GB, free: 10.38 MB / 1.17 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0008196/1.597, allocations: 107.3 kB / 1.443 GB, free: 10.27 MB / 1.17 GB Notification: Performance of SimCode: time 7.22e-07/1.597, allocations: 0 / 1.443 GB, free: 10.27 MB / 1.17 GB Notification: Performance of Templates: time 0.06562/1.663, allocations: 39.98 MB / 1.482 GB, free: 2.348 MB / 1.201 GB make -j1 -f Buildings_latest_Buildings.Fluid.DXSystems.Cooling.BaseClasses.Examples.ApparatusDryPoint.makefile (rm -f Buildings_latest_Buildings.Fluid.DXSystems.Cooling.BaseClasses.Examples.ApparatusDryPoint.pipe ; mkfifo Buildings_latest_Buildings.Fluid.DXSystems.Cooling.BaseClasses.Examples.ApparatusDryPoint.pipe ; head -c 1048576 < Buildings_latest_Buildings.Fluid.DXSystems.Cooling.BaseClasses.Examples.ApparatusDryPoint.pipe >> ../files/Buildings_latest_Buildings.Fluid.DXSystems.Cooling.BaseClasses.Examples.ApparatusDryPoint.sim & ./Buildings_latest_Buildings.Fluid.DXSystems.Cooling.BaseClasses.Examples.ApparatusDryPoint -abortSlowSimulation -alarm=480 -emit_protected -lv LOG_STATS > Buildings_latest_Buildings.Fluid.DXSystems.Cooling.BaseClasses.Examples.ApparatusDryPoint.pipe 2>&1) diffSimulationResults("Buildings_latest_Buildings.Fluid.DXSystems.Cooling.BaseClasses.Examples.ApparatusDryPoint_res.mat","/mnt/ReferenceFiles/Buildings/csv/master/Buildings_Fluid_DXSystems_Cooling_BaseClasses_Examples_ApparatusDryPoint.csv","/var/lib/jenkins1/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/files/Buildings_latest_Buildings.Fluid.DXSystems.Cooling.BaseClasses.Examples.ApparatusDryPoint.diff",relTol=0.003,relTolDiffMinMax=0.003,rangeDelta=0.001) Reference file matches