Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_9_Buildings.Electrical.AC.OnePhase.Sensors.Examples.Probe.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 9.1.3-maint.9.1.x/package.mo", uses=false) Using package Buildings with version 9.1.3 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 9.1.3-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.Electrical.AC.OnePhase.Sensors.Examples.Probe,tolerance=1e-06,outputFormat="mat",numberOfIntervals=5000,variableFilter="time|probe_source.V|probe_loadRC.V|probe_loadRL.V",fileNamePrefix="Buildings_9_Buildings.Electrical.AC.OnePhase.Sensors.Examples.Probe") translateModel(Buildings.Electrical.AC.OnePhase.Sensors.Examples.Probe,tolerance=1e-06,outputFormat="mat",numberOfIntervals=5000,variableFilter="time|probe_source.V|probe_loadRC.V|probe_loadRL.V",fileNamePrefix="Buildings_9_Buildings.Electrical.AC.OnePhase.Sensors.Examples.Probe") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001635/0.001636, allocations: 105.6 kB / 16.27 MB, free: 6.414 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001876/0.001877, allocations: 189.8 kB / 17.2 MB, free: 5.953 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.311/1.311, allocations: 222.9 MB / 240.9 MB, free: 15.26 MB / 206.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 9.1.3-maint.9.1.x/package.mo): time 2.25/2.25, allocations: 390.3 MB / 0.6653 GB, free: 0.7734 MB / 0.5294 GB Notification: Performance of FrontEnd - loaded program: time 0.001363/0.001363, allocations: 63.33 kB / 0.8132 GB, free: 33.03 MB / 0.6231 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.2895/0.2909, allocations: 140.4 MB / 0.9503 GB, free: 8.922 MB / 0.7325 GB Notification: Performance of NFInst.instantiate(Buildings.Electrical.AC.OnePhase.Sensors.Examples.Probe): time 0.006606/0.2975, allocations: 4.15 MB / 0.9543 GB, free: 4.75 MB / 0.7325 GB Notification: Performance of NFInst.instExpressions: time 0.004629/0.3022, allocations: 2.362 MB / 0.9566 GB, free: 2.375 MB / 0.7325 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.0004168/0.3026, allocations: 8 kB / 0.9566 GB, free: 2.367 MB / 0.7325 GB Notification: Performance of NFTyping.typeComponents: time 0.001764/0.3044, allocations: 0.54 MB / 0.9572 GB, free: 1.828 MB / 0.7325 GB Notification: Performance of NFTyping.typeBindings: time 0.001012/0.3055, allocations: 302.6 kB / 0.9575 GB, free: 1.531 MB / 0.7325 GB Notification: Performance of NFTyping.typeClassSections: time 0.001075/0.3066, allocations: 339.1 kB / 0.9578 GB, free: 1.199 MB / 0.7325 GB Notification: Performance of NFFlatten.flatten: time 0.0008781/0.3075, allocations: 0.5607 MB / 0.9583 GB, free: 0.6367 MB / 0.7325 GB Notification: Performance of NFFlatten.resolveConnections: time 0.0006309/0.3082, allocations: 376 kB / 0.9587 GB, free: 276 kB / 0.7325 GB Notification: Performance of NFEvalConstants.evaluate: time 0.0004266/0.3086, allocations: 227.3 kB / 0.9589 GB, free: 48 kB / 0.7325 GB Notification: Performance of NFSimplifyModel.simplify: time 0.0006166/0.3092, allocations: 279 kB / 0.9592 GB, free: 15.77 MB / 0.7481 GB Notification: Performance of NFPackage.collectConstants: time 0.0001002/0.3093, allocations: 40 kB / 0.9592 GB, free: 15.73 MB / 0.7481 GB Notification: Performance of NFFlatten.collectFunctions: time 0.0006153/0.31, allocations: 283.5 kB / 0.9595 GB, free: 15.46 MB / 0.7481 GB Notification: Performance of NFScalarize.scalarize: time 0.0002258/0.3102, allocations: 175.6 kB / 0.9596 GB, free: 15.29 MB / 0.7481 GB Notification: Performance of NFVerifyModel.verify: time 0.0002963/0.3105, allocations: 218.9 kB / 0.9599 GB, free: 15.07 MB / 0.7481 GB Notification: Performance of NFConvertDAE.convert: time 0.0009348/0.3114, allocations: 0.6543 MB / 0.9605 GB, free: 14.41 MB / 0.7481 GB Notification: Performance of FrontEnd - DAE generated: time 5.871e-06/0.3115, allocations: 0 / 0.9605 GB, free: 14.41 MB / 0.7481 GB Notification: Performance of FrontEnd: time 1.413e-06/0.3115, allocations: 0 / 0.9605 GB, free: 14.41 MB / 0.7481 GB Notification: Performance of Transformations before backend: time 1.674e-05/0.3115, allocations: 0 / 0.9605 GB, free: 14.41 MB / 0.7481 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 102 * Number of variables: 102 Notification: Performance of Generate backend data structure: time 0.001429/0.3129, allocations: 0.7252 MB / 0.9612 GB, free: 13.64 MB / 0.7481 GB Notification: Performance of prepare preOptimizeDAE: time 4.07e-05/0.313, allocations: 8.031 kB / 0.9612 GB, free: 13.63 MB / 0.7481 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.001344/0.3143, allocations: 152.3 kB / 0.9614 GB, free: 13.48 MB / 0.7481 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.0005094/0.3148, allocations: 328.5 kB / 0.9617 GB, free: 13.12 MB / 0.7481 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 3.464e-05/0.3149, allocations: 25.36 kB / 0.9617 GB, free: 13.1 MB / 0.7481 GB Notification: Performance of preOpt expandDerOperator (simulation): time 7.726e-05/0.315, allocations: 40.38 kB / 0.9617 GB, free: 13.06 MB / 0.7481 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.001057/0.316, allocations: 0.6341 MB / 0.9624 GB, free: 12.37 MB / 0.7481 GB Notification: Performance of preOpt findStateOrder (simulation): time 2.333e-05/0.3161, allocations: 7.938 kB / 0.9624 GB, free: 12.36 MB / 0.7481 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 5.54e-05/0.3161, allocations: 19.98 kB / 0.9624 GB, free: 12.34 MB / 0.7481 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 9.653e-05/0.3162, allocations: 40.62 kB / 0.9624 GB, free: 12.3 MB / 0.7481 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0008544/0.3171, allocations: 498.1 kB / 0.9629 GB, free: 11.82 MB / 0.7481 GB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.004019/0.3211, allocations: 3.428 MB / 0.9662 GB, free: 8.102 MB / 0.7481 GB Notification: Performance of preOpt comSubExp (simulation): time 0.0007185/0.3219, allocations: 380.9 kB / 0.9666 GB, free: 7.711 MB / 0.7481 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0002535/0.3221, allocations: 170 kB / 0.9668 GB, free: 7.539 MB / 0.7481 GB Notification: Performance of preOpt evalFunc (simulation): time 3.607e-05/0.3222, allocations: 11.84 kB / 0.9668 GB, free: 7.527 MB / 0.7481 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 2.886e-05/0.3222, allocations: 38.56 kB / 0.9668 GB, free: 7.48 MB / 0.7481 GB Notification: Performance of pre-optimization done (n=25): time 1.944e-06/0.3222, allocations: 0 / 0.9668 GB, free: 7.48 MB / 0.7481 GB Notification: Performance of matching and sorting (n=26): time 0.00489/0.3271, allocations: 1.464 MB / 0.9682 GB, free: 5.965 MB / 0.7481 GB Notification: Performance of inlineWhenForInitialization (initialization): time 5.012e-05/0.3272, allocations: 77.11 kB / 0.9683 GB, free: 5.871 MB / 0.7481 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0004579/0.3277, allocations: 336.4 kB / 0.9686 GB, free: 5.531 MB / 0.7481 GB Notification: Performance of collectPreVariables (initialization): time 3.942e-05/0.3277, allocations: 33.7 kB / 0.9687 GB, free: 5.492 MB / 0.7481 GB Notification: Performance of collectInitialEqns (initialization): time 0.0001628/0.3279, allocations: 263.2 kB / 0.9689 GB, free: 5.23 MB / 0.7481 GB Notification: Performance of collectInitialBindings (initialization): time 8.232e-05/0.328, allocations: 94.72 kB / 0.969 GB, free: 5.137 MB / 0.7481 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0001598/0.3281, allocations: 90.16 kB / 0.9691 GB, free: 5.039 MB / 0.7481 GB Notification: Performance of setup shared object (initialization): time 0.00012/0.3283, allocations: 342.8 kB / 0.9694 GB, free: 4.695 MB / 0.7481 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.000343/0.3286, allocations: 191 kB / 0.9696 GB, free: 4.508 MB / 0.7481 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0004229/0.3291, allocations: 355.1 kB / 0.9699 GB, free: 4.086 MB / 0.7481 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0007252/0.3298, allocations: 0.5397 MB / 0.9705 GB, free: 3.473 MB / 0.7481 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 3.787e-06/0.3298, allocations: 0 / 0.9705 GB, free: 3.473 MB / 0.7481 GB Notification: Performance of matching and sorting (n=55) (initialization): time 0.002519/0.3323, allocations: 0.9241 MB / 0.9714 GB, free: 2.535 MB / 0.7481 GB Notification: Performance of prepare postOptimizeDAE: time 2.506e-05/0.3324, allocations: 8 kB / 0.9714 GB, free: 2.527 MB / 0.7481 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.238e-05/0.3324, allocations: 4 kB / 0.9714 GB, free: 2.523 MB / 0.7481 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.002379/0.3348, allocations: 0.4971 MB / 0.9719 GB, free: 2.02 MB / 0.7481 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0004892/0.3353, allocations: 103.8 kB / 0.972 GB, free: 1.918 MB / 0.7481 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.005926/0.3412, allocations: 4.055 MB / 0.9759 GB, free: 13.58 MB / 0.7637 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0005474/0.3418, allocations: 51.86 kB / 0.976 GB, free: 13.53 MB / 0.7637 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 6.184e-05/0.3419, allocations: 27.98 kB / 0.976 GB, free: 13.5 MB / 0.7637 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.0004811/0.3424, allocations: 307.1 kB / 0.9763 GB, free: 13.2 MB / 0.7637 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.0003964/0.3428, allocations: 335.8 kB / 0.9766 GB, free: 12.79 MB / 0.7637 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.0006624/0.3434, allocations: 0.5072 MB / 0.9771 GB, free: 12.21 MB / 0.7637 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 4.618e-06/0.3435, allocations: 7.938 kB / 0.9771 GB, free: 12.2 MB / 0.7637 GB Notification: Performance of matching and sorting (n=55) (initialization_lambda0): time 0.0009633/0.3444, allocations: 0.5399 MB / 0.9776 GB, free: 11.65 MB / 0.7637 GB Notification: Performance of prepare postOptimizeDAE: time 1.496e-05/0.3445, allocations: 8 kB / 0.9777 GB, free: 11.64 MB / 0.7637 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.165e-05/0.3445, allocations: 7.984 kB / 0.9777 GB, free: 11.64 MB / 0.7637 GB Notification: Performance of postOpt tearingSystem (initialization): time 1.068e-05/0.3445, allocations: 11.94 kB / 0.9777 GB, free: 11.62 MB / 0.7637 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0004626/0.345, allocations: 111.8 kB / 0.9778 GB, free: 11.52 MB / 0.7637 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 1.666e-05/0.345, allocations: 16.39 kB / 0.9778 GB, free: 11.5 MB / 0.7637 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0004322/0.3454, allocations: 43.91 kB / 0.9778 GB, free: 11.46 MB / 0.7637 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 3.484e-05/0.3455, allocations: 16 kB / 0.9779 GB, free: 11.44 MB / 0.7637 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 24 * 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 (49): * Single equations (assignments): 47 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 2 * 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): 2 systems {(2,2), (2,2)} Notification: Performance of prepare postOptimizeDAE: time 0.0001868/0.3457, allocations: 212.1 kB / 0.9781 GB, free: 11.23 MB / 0.7637 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.000113/0.3458, allocations: 31.62 kB / 0.9781 GB, free: 11.2 MB / 0.7637 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.001762/0.3476, allocations: 0.6734 MB / 0.9787 GB, free: 10.51 MB / 0.7637 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 8.707e-06/0.3476, allocations: 4 kB / 0.9787 GB, free: 10.51 MB / 0.7637 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 3.587e-06/0.3476, allocations: 0 / 0.9787 GB, free: 10.51 MB / 0.7637 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 6.672e-06/0.3476, allocations: 3.984 kB / 0.9788 GB, free: 10.5 MB / 0.7637 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.00103/0.3486, allocations: 0.6637 MB / 0.9794 GB, free: 9.777 MB / 0.7637 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 3.767e-06/0.3486, allocations: 0 / 0.9794 GB, free: 9.777 MB / 0.7637 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0002108/0.3489, allocations: 43.97 kB / 0.9794 GB, free: 9.734 MB / 0.7637 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.001589/0.3505, allocations: 397.2 kB / 0.9798 GB, free: 9.34 MB / 0.7637 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 3.422e-05/0.3505, allocations: 11.98 kB / 0.9798 GB, free: 9.328 MB / 0.7637 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.004305/0.3548, allocations: 3.761 MB / 0.9835 GB, free: 5.285 MB / 0.7637 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 3.256e-06/0.3548, allocations: 0 / 0.9835 GB, free: 5.285 MB / 0.7637 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.001843/0.3567, allocations: 0.8366 MB / 0.9843 GB, free: 4.418 MB / 0.7637 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0002068/0.3569, allocations: 136.6 kB / 0.9845 GB, free: 4.266 MB / 0.7637 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 6.456e-05/0.357, allocations: 11.98 kB / 0.9845 GB, free: 4.254 MB / 0.7637 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.000404/0.3574, allocations: 35.94 kB / 0.9845 GB, free: 4.219 MB / 0.7637 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 7.192e-05/0.3575, allocations: 27.97 kB / 0.9845 GB, free: 4.191 MB / 0.7637 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 2.764e-05/0.3575, allocations: 15.94 kB / 0.9845 GB, free: 4.176 MB / 0.7637 GB Notification: Performance of sorting global known variables: time 0.0003135/0.3578, allocations: 231 kB / 0.9848 GB, free: 3.949 MB / 0.7637 GB Notification: Performance of sort global known variables: time 1.71e-07/0.3579, allocations: 4 kB / 0.9848 GB, free: 3.945 MB / 0.7637 GB Notification: Performance of remove unused functions: time 0.0008892/0.3587, allocations: 192 kB / 0.9849 GB, free: 3.758 MB / 0.7637 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 (23): * Single equations (assignments): 21 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 2 * 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): 2 systems {(2,2), (2,2)} Notification: Performance of Backend phase and start with SimCode phase: time 0.000164/0.3589, allocations: 115.1 kB / 0.9851 GB, free: 3.637 MB / 0.7637 GB Notification: Performance of simCode: created initialization part: time 0.001872/0.3608, allocations: 1.008 MB / 0.986 GB, free: 2.605 MB / 0.7637 GB Notification: Performance of simCode: created event and clocks part: time 5.16e-06/0.3608, allocations: 0 / 0.986 GB, free: 2.605 MB / 0.7637 GB Notification: Performance of simCode: created simulation system equations: time 0.000727/0.3615, allocations: 485.6 kB / 0.9865 GB, free: 2.105 MB / 0.7637 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.0006313/0.3622, allocations: 80.17 kB / 0.9866 GB, free: 2.035 MB / 0.7637 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.001316/0.3635, allocations: 0.7943 MB / 0.9874 GB, free: 1.195 MB / 0.7637 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0004001/0.3639, allocations: 0.8546 MB / 0.9882 GB, free: 316 kB / 0.7637 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.00011/0.3641, allocations: 39.36 kB / 0.9882 GB, free: 276 kB / 0.7637 GB Notification: Performance of SimCode: time 3.1e-07/0.3641, allocations: 0 / 0.9882 GB, free: 276 kB / 0.7637 GB Notification: Performance of Templates: time 0.0133/0.3774, allocations: 8.421 MB / 0.9965 GB, free: 7.859 MB / 0.7794 GB make -j1 -f Buildings_9_Buildings.Electrical.AC.OnePhase.Sensors.Examples.Probe.makefile (rm -f Buildings_9_Buildings.Electrical.AC.OnePhase.Sensors.Examples.Probe.pipe ; mkfifo Buildings_9_Buildings.Electrical.AC.OnePhase.Sensors.Examples.Probe.pipe ; head -c 1048576 < Buildings_9_Buildings.Electrical.AC.OnePhase.Sensors.Examples.Probe.pipe >> ../files/Buildings_9_Buildings.Electrical.AC.OnePhase.Sensors.Examples.Probe.sim & ./Buildings_9_Buildings.Electrical.AC.OnePhase.Sensors.Examples.Probe -abortSlowSimulation -alarm=480 -emit_protected -lv LOG_STATS > Buildings_9_Buildings.Electrical.AC.OnePhase.Sensors.Examples.Probe.pipe 2>&1) diffSimulationResults("Buildings_9_Buildings.Electrical.AC.OnePhase.Sensors.Examples.Probe_res.mat","/mnt/ReferenceFiles/Buildings/csv/maint_9.1.x/Buildings_Electrical_AC_OnePhase_Sensors_Examples_Probe.csv","/var/lib/jenkins1/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/files/Buildings_9_Buildings.Electrical.AC.OnePhase.Sensors.Examples.Probe.diff",relTol=0.003,relTolDiffMinMax=0.003,rangeDelta=0.001) Reference file matches