Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_latest_Buildings.Fluid.Interfaces.Examples.PrescribedOutlet_TSetOnly.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.Interfaces.Examples.PrescribedOutlet_TSetOnly,tolerance=1e-06,outputFormat="mat",numberOfIntervals=5000,variableFilter="time|heaHigPow.sta_a.T|heaHigPow.sta_b.T|cooLimPow.sta_a.T|cooLimPow.sta_b.T|heaCooUnl.sta_a.T|heaCooUnl.sta_b.T|steSta.sta_b.T|heaHigPow.Q_flow|cooLimPow.Q_flow|heaCooUnl.Q_flow|steSta.Q_flow|setHeaHigPow.y.2.|heaHigPow.port_b.Xi_outflow.1.|setCooLimPow.y.2.|cooLimPow.port_b.Xi_outflow.1.|setHeaCooUnl.y.2.|heaCooUnl.port_b.Xi_outflow.1.|steSta.port_b.Xi_outflow.1.|heaHigPow.mWat_flow|cooLimPow.mWat_flow|heaCooUnl.mWat_flow|steSta.mWat_flow",fileNamePrefix="Buildings_latest_Buildings.Fluid.Interfaces.Examples.PrescribedOutlet_TSetOnly") translateModel(Buildings.Fluid.Interfaces.Examples.PrescribedOutlet_TSetOnly,tolerance=1e-06,outputFormat="mat",numberOfIntervals=5000,variableFilter="time|heaHigPow.sta_a.T|heaHigPow.sta_b.T|cooLimPow.sta_a.T|cooLimPow.sta_b.T|heaCooUnl.sta_a.T|heaCooUnl.sta_b.T|steSta.sta_b.T|heaHigPow.Q_flow|cooLimPow.Q_flow|heaCooUnl.Q_flow|steSta.Q_flow|setHeaHigPow.y.2.|heaHigPow.port_b.Xi_outflow.1.|setCooLimPow.y.2.|cooLimPow.port_b.Xi_outflow.1.|setHeaCooUnl.y.2.|heaCooUnl.port_b.Xi_outflow.1.|steSta.port_b.Xi_outflow.1.|heaHigPow.mWat_flow|cooLimPow.mWat_flow|heaCooUnl.mWat_flow|steSta.mWat_flow",fileNamePrefix="Buildings_latest_Buildings.Fluid.Interfaces.Examples.PrescribedOutlet_TSetOnly") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.007459/0.007459, allocations: 101.2 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 0.001606/0.001606, allocations: 197.1 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 1.388/1.388, allocations: 222.9 MB / 240.4 MB, free: 15.14 MB / 206.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 11.0.1-master/package.mo): time 2.694/2.694, allocations: 461.9 MB / 0.7348 GB, free: 11.08 MB / 0.6075 GB Notification: Performance of FrontEnd - loaded program: time 0.001364/0.001364, allocations: 63.91 kB / 1.054 GB, free: 7.645 MB / 0.8262 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.9596/0.961, allocations: 157.4 MB / 1.208 GB, free: 13.57 MB / 0.9356 GB Notification: Performance of NFInst.instantiate(Buildings.Fluid.Interfaces.Examples.PrescribedOutlet_TSetOnly): time 0.2167/1.178, allocations: 193.8 MB / 1.397 GB, free: 11.02 MB / 1.123 GB Notification: Performance of NFInst.instExpressions: time 0.01064/1.188, allocations: 5.144 MB / 1.402 GB, free: 5.867 MB / 1.123 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.002429/1.191, allocations: 47.69 kB / 1.402 GB, free: 5.82 MB / 1.123 GB Notification: Performance of NFTyping.typeComponents: time 0.002642/1.194, allocations: 0.8081 MB / 1.403 GB, free: 5.008 MB / 1.123 GB Notification: Performance of NFTyping.typeBindings: time 0.008501/1.202, allocations: 2.598 MB / 1.405 GB, free: 2.398 MB / 1.123 GB Notification: Performance of NFTyping.typeClassSections: time 0.003575/1.206, allocations: 1.113 MB / 1.407 GB, free: 1.293 MB / 1.123 GB Notification: Performance of NFFlatten.flatten: time 0.004307/1.21, allocations: 2.594 MB / 1.409 GB, free: 14.7 MB / 1.139 GB Notification: Performance of NFFlatten.resolveConnections: time 0.00183/1.212, allocations: 0.8979 MB / 1.41 GB, free: 13.79 MB / 1.139 GB Notification: Performance of NFEvalConstants.evaluate: time 0.002797/1.215, allocations: 1.101 MB / 1.411 GB, free: 12.68 MB / 1.139 GB Notification: Performance of NFSimplifyModel.simplify: time 0.002002/1.217, allocations: 0.9612 MB / 1.412 GB, free: 11.71 MB / 1.139 GB Notification: Performance of NFPackage.collectConstants: time 0.0003552/1.217, allocations: 80 kB / 1.412 GB, free: 11.64 MB / 1.139 GB Notification: Performance of NFFlatten.collectFunctions: time 0.003908/1.221, allocations: 1.789 MB / 1.414 GB, free: 9.844 MB / 1.139 GB Notification: Performance of NFScalarize.scalarize: time 0.0005821/1.222, allocations: 442.6 kB / 1.414 GB, free: 9.41 MB / 1.139 GB Notification: Performance of NFVerifyModel.verify: time 0.001106/1.223, allocations: 0.6487 MB / 1.415 GB, free: 8.758 MB / 1.139 GB Notification: Performance of NFConvertDAE.convert: time 0.004404/1.227, allocations: 2.165 MB / 1.417 GB, free: 6.586 MB / 1.139 GB Notification: Performance of FrontEnd - DAE generated: time 5.931e-06/1.227, allocations: 0 / 1.417 GB, free: 6.586 MB / 1.139 GB Notification: Performance of FrontEnd: time 1.684e-06/1.227, allocations: 0 / 1.417 GB, free: 6.586 MB / 1.139 GB Notification: Performance of Transformations before backend: time 3.166e-05/1.227, allocations: 4 kB / 1.417 GB, free: 6.582 MB / 1.139 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 222 * Number of variables: 222 Notification: Performance of Generate backend data structure: time 0.004875/1.232, allocations: 1.93 MB / 1.419 GB, free: 4.598 MB / 1.139 GB Notification: Performance of prepare preOptimizeDAE: time 4.536e-05/1.232, allocations: 15.97 kB / 1.419 GB, free: 4.582 MB / 1.139 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.004262/1.237, allocations: 0.7005 MB / 1.42 GB, free: 3.879 MB / 1.139 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.001606/1.238, allocations: 0.9566 MB / 1.42 GB, free: 2.863 MB / 1.139 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 6.033e-05/1.238, allocations: 69.98 kB / 1.421 GB, free: 2.797 MB / 1.139 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001506/1.238, allocations: 84 kB / 1.421 GB, free: 2.715 MB / 1.139 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.003058/1.241, allocations: 1.461 MB / 1.422 GB, free: 1.195 MB / 1.139 GB Notification: Performance of preOpt findStateOrder (simulation): time 2.132e-05/1.242, allocations: 4 kB / 1.422 GB, free: 1.191 MB / 1.139 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0001028/1.242, allocations: 39.98 kB / 1.422 GB, free: 1.152 MB / 1.139 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 5.657e-05/1.242, allocations: 49.98 kB / 1.422 GB, free: 1.105 MB / 1.139 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.004053/1.246, allocations: 1.553 MB / 1.424 GB, free: 15.55 MB / 1.154 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 0.006495/1.252, allocations: 5.03 MB / 1.429 GB, free: 10.25 MB / 1.154 GB Notification: Performance of preOpt comSubExp (simulation): time 0.003362/1.256, allocations: 1.18 MB / 1.43 GB, free: 9.066 MB / 1.154 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.001718/1.257, allocations: 0.6624 MB / 1.43 GB, free: 8.402 MB / 1.154 GB Notification: Performance of preOpt evalFunc (simulation): time 0.001266/1.259, allocations: 0.9449 MB / 1.431 GB, free: 7.27 MB / 1.154 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.001866/1.261, allocations: 0.7224 MB / 1.432 GB, free: 6.535 MB / 1.154 GB Notification: Performance of pre-optimization done (n=82): time 3.056e-06/1.261, allocations: 0 / 1.432 GB, free: 6.535 MB / 1.154 GB Notification: Performance of matching and sorting (n=82): time 0.006146/1.267, allocations: 1.956 MB / 1.434 GB, free: 4.57 MB / 1.154 GB Notification: Performance of inlineWhenForInitialization (initialization): time 5.092e-05/1.267, allocations: 64.05 kB / 1.434 GB, free: 4.496 MB / 1.154 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.001473/1.268, allocations: 1.264 MB / 1.435 GB, free: 3.227 MB / 1.154 GB Notification: Performance of collectPreVariables (initialization): time 8.149e-05/1.268, allocations: 41.7 kB / 1.435 GB, free: 3.18 MB / 1.154 GB Notification: Performance of collectInitialEqns (initialization): time 0.000503/1.269, allocations: 0.5755 MB / 1.436 GB, free: 2.598 MB / 1.154 GB Notification: Performance of collectInitialBindings (initialization): time 0.0002512/1.269, allocations: 280 kB / 1.436 GB, free: 2.32 MB / 1.154 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0003044/1.269, allocations: 182.5 kB / 1.436 GB, free: 2.137 MB / 1.154 GB Notification: Performance of setup shared object (initialization): time 0.0001371/1.27, allocations: 345.9 kB / 1.437 GB, free: 1.793 MB / 1.154 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.001646/1.271, allocations: 0.5484 MB / 1.437 GB, free: 1.242 MB / 1.154 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.001833/1.273, allocations: 0.8247 MB / 1.438 GB, free: 320 kB / 1.154 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.003366/1.276, allocations: 1.34 MB / 1.439 GB, free: 14.88 MB / 1.17 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 5.932e-06/1.276, allocations: 0 / 1.439 GB, free: 14.88 MB / 1.17 GB Notification: Performance of matching and sorting (n=117) (initialization): time 0.003948/1.28, allocations: 1.515 MB / 1.441 GB, free: 13.35 MB / 1.17 GB Notification: Performance of prepare postOptimizeDAE: time 2.526e-05/1.28, allocations: 8 kB / 1.441 GB, free: 13.34 MB / 1.17 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.421e-05/1.28, allocations: 8 kB / 1.441 GB, free: 13.34 MB / 1.17 GB Notification: Performance of postOpt tearingSystem (initialization): time 3.138e-05/1.28, allocations: 16 kB / 1.441 GB, free: 13.32 MB / 1.17 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001434/1.282, allocations: 303.9 kB / 1.441 GB, free: 13.02 MB / 1.17 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 1.918e-05/1.282, allocations: 15.94 kB / 1.441 GB, free: 13.01 MB / 1.17 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001316/1.283, allocations: 194.7 kB / 1.441 GB, free: 12.82 MB / 1.17 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001037/1.283, allocations: 55.91 kB / 1.441 GB, free: 12.76 MB / 1.17 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 31 * Number of states: 0 () * Number of discrete variables: 15 ($PRE.setHeaHigPow.nextTimeEvent,$whenCondition3,$PRE.setCooLimPow.nextTimeEvent,$whenCondition2,$PRE.setHeaCooUnl.nextTimeEvent,$whenCondition1,setHeaCooUnl.nextTimeEventScaled,$PRE.setHeaCooUnl.nextTimeEventScaled,setHeaCooUnl.nextTimeEvent,setCooLimPow.nextTimeEventScaled,$PRE.setCooLimPow.nextTimeEventScaled,setCooLimPow.nextTimeEvent,setHeaHigPow.nextTimeEventScaled,$PRE.setHeaHigPow.nextTimeEventScaled,setHeaHigPow.nextTimeEvent) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (117): * Single equations (assignments): 117 * 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 0.0005318/1.284, allocations: 335.7 kB / 1.442 GB, free: 12.43 MB / 1.17 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0001921/1.284, allocations: 146.2 kB / 1.442 GB, free: 12.28 MB / 1.17 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.003865/1.288, allocations: 1.436 MB / 1.443 GB, free: 10.83 MB / 1.17 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 8.827e-06/1.288, allocations: 8 kB / 1.443 GB, free: 10.82 MB / 1.17 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 5.62e-06/1.288, allocations: 0 / 1.443 GB, free: 10.82 MB / 1.17 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 9.728e-06/1.288, allocations: 8.078 kB / 1.443 GB, free: 10.82 MB / 1.17 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.005901/1.294, allocations: 2.865 MB / 1.446 GB, free: 7.844 MB / 1.17 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 8.495e-06/1.294, allocations: 4 kB / 1.446 GB, free: 7.84 MB / 1.17 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.001226/1.295, allocations: 232.2 kB / 1.446 GB, free: 7.613 MB / 1.17 GB Notification: Performance of postOpt tearingSystem (simulation): time 1.381e-05/1.295, allocations: 8 kB / 1.446 GB, free: 7.605 MB / 1.17 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 8.1e-05/1.295, allocations: 27.97 kB / 1.446 GB, free: 7.578 MB / 1.17 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 8.386e-06/1.295, allocations: 8 kB / 1.446 GB, free: 7.57 MB / 1.17 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 5.33e-06/1.295, allocations: 7.938 kB / 1.446 GB, free: 7.562 MB / 1.17 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.005517/1.301, allocations: 2.307 MB / 1.448 GB, free: 5.195 MB / 1.17 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0005599/1.301, allocations: 307.2 kB / 1.449 GB, free: 4.875 MB / 1.17 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001561/1.302, allocations: 16 kB / 1.449 GB, free: 4.859 MB / 1.17 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.001073/1.303, allocations: 119.8 kB / 1.449 GB, free: 4.742 MB / 1.17 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001373/1.303, allocations: 60.38 kB / 1.449 GB, free: 4.684 MB / 1.17 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 8.146e-05/1.303, allocations: 39.97 kB / 1.449 GB, free: 4.645 MB / 1.17 GB Notification: Performance of sorting global known variables: time 0.0009985/1.304, allocations: 0.8723 MB / 1.45 GB, free: 3.77 MB / 1.17 GB Notification: Performance of sort global known variables: time 1.393e-06/1.304, allocations: 0 / 1.45 GB, free: 3.77 MB / 1.17 GB Notification: Performance of remove unused functions: time 0.0009777/1.305, allocations: 323.6 kB / 1.45 GB, free: 3.453 MB / 1.17 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 17 * Number of states: 3 (heaHigPow.T,cooLimPow.T,heaCooUnl.T) * Number of discrete variables: 9 ($whenCondition3,$whenCondition2,$whenCondition1,setHeaHigPow.nextTimeEvent,setHeaHigPow.nextTimeEventScaled,setCooLimPow.nextTimeEvent,setCooLimPow.nextTimeEventScaled,setHeaCooUnl.nextTimeEvent,setHeaCooUnl.nextTimeEventScaled) * Number of discrete states: 6 (setHeaHigPow.nextTimeEvent,setCooLimPow.nextTimeEvent,setHeaCooUnl.nextTimeEvent,setHeaCooUnl.nextTimeEventScaled,setCooLimPow.nextTimeEventScaled,setHeaHigPow.nextTimeEventScaled) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (82): * Single equations (assignments): 76 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 6 * 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 0.00124/1.306, allocations: 0.5306 MB / 1.451 GB, free: 3.086 MB / 1.17 GB Notification: Performance of simCode: created initialization part: time 0.003761/1.31, allocations: 1.316 MB / 1.452 GB, free: 1.77 MB / 1.17 GB Notification: Performance of simCode: created event and clocks part: time 4.549e-06/1.31, allocations: 0 / 1.452 GB, free: 1.77 MB / 1.17 GB Notification: Performance of simCode: created simulation system equations: time 0.001826/1.312, allocations: 0.656 MB / 1.453 GB, free: 1.109 MB / 1.17 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.002664/1.314, allocations: 0.6284 MB / 1.453 GB, free: 500 kB / 1.17 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.004567/1.319, allocations: 2.558 MB / 1.456 GB, free: 13.85 MB / 1.186 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0006667/1.32, allocations: 1.171 MB / 1.457 GB, free: 12.65 MB / 1.186 GB Notification: Performance of simCode: alias equations: time 0.001148/1.321, allocations: 350.2 kB / 1.457 GB, free: 12.31 MB / 1.186 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0003997/1.321, allocations: 115.4 kB / 1.457 GB, free: 12.2 MB / 1.186 GB Notification: Performance of SimCode: time 4.41e-07/1.321, allocations: 0 / 1.457 GB, free: 12.2 MB / 1.186 GB Notification: Performance of Templates: time 0.03882/1.36, allocations: 23.72 MB / 1.48 GB, free: 4.801 MB / 1.201 GB make -j1 -f Buildings_latest_Buildings.Fluid.Interfaces.Examples.PrescribedOutlet_TSetOnly.makefile (rm -f Buildings_latest_Buildings.Fluid.Interfaces.Examples.PrescribedOutlet_TSetOnly.pipe ; mkfifo Buildings_latest_Buildings.Fluid.Interfaces.Examples.PrescribedOutlet_TSetOnly.pipe ; head -c 1048576 < Buildings_latest_Buildings.Fluid.Interfaces.Examples.PrescribedOutlet_TSetOnly.pipe >> ../files/Buildings_latest_Buildings.Fluid.Interfaces.Examples.PrescribedOutlet_TSetOnly.sim & ./Buildings_latest_Buildings.Fluid.Interfaces.Examples.PrescribedOutlet_TSetOnly -abortSlowSimulation -alarm=480 -emit_protected -lv LOG_STATS > Buildings_latest_Buildings.Fluid.Interfaces.Examples.PrescribedOutlet_TSetOnly.pipe 2>&1) diffSimulationResults("Buildings_latest_Buildings.Fluid.Interfaces.Examples.PrescribedOutlet_TSetOnly_res.mat","/mnt/ReferenceFiles/Buildings/csv/master/Buildings_Fluid_Interfaces_Examples_PrescribedOutlet_TSetOnly.csv","/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/files/Buildings_latest_Buildings.Fluid.Interfaces.Examples.PrescribedOutlet_TSetOnly.diff",relTol=0.003,relTolDiffMinMax=0.003,rangeDelta=0.001) Reference file matches