Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr Buildings_latest_Buildings.Electrical.AC.ThreePhasesUnbalanced.Conversion.Examples.TransformerStepUpYD.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 11.0.0-master/package.mo", uses=false) Using package Buildings with version 11.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 11.0.0-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.Electrical.AC.ThreePhasesUnbalanced.Conversion.Examples.TransformerStepUpYD,tolerance=1e-06,outputFormat="mat",numberOfIntervals=5000,variableFilter="time|probe_Y_1.V.1.|probe_Y_1.V.2.|probe_Y_1.V.3.|probe_D_1.V.1.|probe_D_1.V.2.|probe_D_1.V.3.|probe_2.V.1.|probe_2.V.2.|probe_2.V.3.|probe_Y_1.theta.1.|probe_Y_1.theta.2.|probe_Y_1.theta.3.|probe_D_1.theta.1.|probe_D_1.theta.2.|probe_D_1.theta.3.|probe_2.theta.1.|probe_2.theta.2.|probe_2.theta.3.",fileNamePrefix="Buildings_latest_Buildings.Electrical.AC.ThreePhasesUnbalanced.Conversion.Examples.TransformerStepUpYD") translateModel(Buildings.Electrical.AC.ThreePhasesUnbalanced.Conversion.Examples.TransformerStepUpYD,tolerance=1e-06,outputFormat="mat",numberOfIntervals=5000,variableFilter="time|probe_Y_1.V.1.|probe_Y_1.V.2.|probe_Y_1.V.3.|probe_D_1.V.1.|probe_D_1.V.2.|probe_D_1.V.3.|probe_2.V.1.|probe_2.V.2.|probe_2.V.3.|probe_Y_1.theta.1.|probe_Y_1.theta.2.|probe_Y_1.theta.3.|probe_D_1.theta.1.|probe_D_1.theta.2.|probe_D_1.theta.3.|probe_2.theta.1.|probe_2.theta.2.|probe_2.theta.3.",fileNamePrefix="Buildings_latest_Buildings.Electrical.AC.ThreePhasesUnbalanced.Conversion.Examples.TransformerStepUpYD") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001284/0.001284, allocations: 99.86 kB / 15.05 MB, free: 1.105 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001541/0.001542, allocations: 177.3 kB / 15.94 MB, free: 228 kB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.504/1.504, allocations: 223.2 MB / 239.9 MB, free: 5.328 MB / 190.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 11.0.0-master/package.mo): time 2.794/2.794, allocations: 436.5 MB / 0.7104 GB, free: 7.848 MB / 0.5606 GB Notification: Performance of FrontEnd - loaded program: time 0.0003435/0.0003435, allocations: 16 kB / 0.8708 GB, free: 4.824 MB / 0.7169 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.8045/0.8048, allocations: 153.7 MB / 1.021 GB, free: 1.137 MB / 0.7637 GB Notification: Performance of NFInst.instantiate(Buildings.Electrical.AC.ThreePhasesUnbalanced.Conversion.Examples.TransformerStepUpYD): time 0.01745/0.8224, allocations: 14.5 MB / 1.035 GB, free: 2.59 MB / 0.7794 GB Notification: Performance of NFInst.instExpressions: time 0.008643/0.8311, allocations: 5.505 MB / 1.04 GB, free: 13.07 MB / 0.795 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.001103/0.8322, allocations: 35.88 kB / 1.04 GB, free: 13.03 MB / 0.795 GB Notification: Performance of NFTyping.typeComponents: time 0.0007791/0.833, allocations: 326.1 kB / 1.041 GB, free: 12.71 MB / 0.795 GB Notification: Performance of NFTyping.typeBindings: time 0.001892/0.8349, allocations: 0.5997 MB / 1.041 GB, free: 12.11 MB / 0.795 GB Notification: Performance of NFTyping.typeClassSections: time 0.001967/0.8369, allocations: 0.6343 MB / 1.042 GB, free: 11.48 MB / 0.795 GB Notification: Performance of NFFlatten.flatten: time 0.002627/0.8395, allocations: 1.739 MB / 1.044 GB, free: 9.734 MB / 0.795 GB Notification: Performance of NFFlatten.resolveConnections: time 0.008505/0.848, allocations: 5.826 MB / 1.049 GB, free: 3.852 MB / 0.795 GB Notification: Performance of NFEvalConstants.evaluate: time 0.002172/0.8503, allocations: 1.04 MB / 1.05 GB, free: 2.809 MB / 0.795 GB Notification: Performance of NFSimplifyModel.simplify: time 0.00242/0.8527, allocations: 1.215 MB / 1.052 GB, free: 1.59 MB / 0.795 GB Notification: Performance of NFPackage.collectConstants: time 0.0009688/0.8537, allocations: 188 kB / 1.052 GB, free: 1.406 MB / 0.795 GB Notification: Performance of NFFlatten.collectFunctions: time 0.002373/0.8561, allocations: 0.5813 MB / 1.052 GB, free: 0.8242 MB / 0.795 GB Notification: Performance of NFScalarize.scalarize: time 0.001936/0.858, allocations: 1.29 MB / 1.054 GB, free: 15.53 MB / 0.8106 GB Notification: Performance of NFVerifyModel.verify: time 0.0007774/0.8588, allocations: 0.5356 MB / 1.054 GB, free: 14.99 MB / 0.8106 GB Notification: Performance of NFConvertDAE.convert: time 0.006407/0.8652, allocations: 5.269 MB / 1.059 GB, free: 9.707 MB / 0.8106 GB Notification: Performance of FrontEnd - DAE generated: time 4.769e-06/0.8653, allocations: 0 / 1.059 GB, free: 9.707 MB / 0.8106 GB Notification: Performance of FrontEnd: time 3.076e-06/0.8653, allocations: 4 kB / 1.059 GB, free: 9.703 MB / 0.8106 GB Notification: Performance of Transformations before backend: time 0.0001907/0.8655, allocations: 0 / 1.059 GB, free: 9.703 MB / 0.8106 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 769 * Number of variables: 769 Notification: Performance of Generate backend data structure: time 0.00735/0.8728, allocations: 2.402 MB / 1.062 GB, free: 7.242 MB / 0.8106 GB Notification: Performance of prepare preOptimizeDAE: time 4.216e-05/0.8729, allocations: 11.98 kB / 1.062 GB, free: 7.23 MB / 0.8106 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0114/0.8843, allocations: 2.076 MB / 1.064 GB, free: 5.148 MB / 0.8106 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.00417/0.8885, allocations: 1.58 MB / 1.065 GB, free: 3.523 MB / 0.8106 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0001857/0.8887, allocations: 213.8 kB / 1.065 GB, free: 3.312 MB / 0.8106 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0008663/0.8896, allocations: 276 kB / 1.066 GB, free: 3.043 MB / 0.8106 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.01289/0.9025, allocations: 5.649 MB / 1.071 GB, free: 13.29 MB / 0.8262 GB Notification: Performance of preOpt findStateOrder (simulation): time 5.65e-05/0.9026, allocations: 0 / 1.071 GB, free: 13.29 MB / 0.8262 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0004009/0.903, allocations: 120 kB / 1.071 GB, free: 13.18 MB / 0.8262 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.0003303/0.9033, allocations: 200.7 kB / 1.071 GB, free: 12.98 MB / 0.8262 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.01433/0.9177, allocations: 5.816 MB / 1.077 GB, free: 7.145 MB / 0.8262 GB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.03095/0.9487, allocations: 22.82 MB / 1.099 GB, free: 14.29 MB / 0.8575 GB Notification: Performance of preOpt comSubExp (simulation): time 0.006107/0.9548, allocations: 3.095 MB / 1.102 GB, free: 11.03 MB / 0.8575 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0002602/0.9551, allocations: 126 kB / 1.103 GB, free: 10.89 MB / 0.8575 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 4.399e-05/0.9552, allocations: 51.56 kB / 1.103 GB, free: 10.83 MB / 0.8575 GB Notification: Performance of pre-optimization done (n=132): time 3.908e-06/0.9552, allocations: 0 / 1.103 GB, free: 10.83 MB / 0.8575 GB Notification: Performance of matching and sorting (n=132): time 0.01837/0.9736, allocations: 6.101 MB / 1.109 GB, free: 4.695 MB / 0.8575 GB Notification: Performance of inlineWhenForInitialization (initialization): time 0.0001073/0.9737, allocations: 226.6 kB / 1.109 GB, free: 4.422 MB / 0.8575 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.001376/0.9751, allocations: 0.9491 MB / 1.11 GB, free: 3.465 MB / 0.8575 GB Notification: Performance of collectPreVariables (initialization): time 0.0001638/0.9753, allocations: 45.7 kB / 1.11 GB, free: 3.414 MB / 0.8575 GB Notification: Performance of collectInitialEqns (initialization): time 0.0007199/0.976, allocations: 1.153 MB / 1.111 GB, free: 2.242 MB / 0.8575 GB Notification: Performance of collectInitialBindings (initialization): time 0.0004806/0.9765, allocations: 473.4 kB / 1.111 GB, free: 1.773 MB / 0.8575 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0001309/0.9766, allocations: 39.94 kB / 1.111 GB, free: 1.734 MB / 0.8575 GB Notification: Performance of setup shared object (initialization): time 0.0002009/0.9768, allocations: 418.7 kB / 1.112 GB, free: 1.316 MB / 0.8575 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.004261/0.9811, allocations: 1.666 MB / 1.113 GB, free: 15.65 MB / 0.8731 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.004729/0.9858, allocations: 2.232 MB / 1.116 GB, free: 13.18 MB / 0.8731 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.004576/0.9904, allocations: 1.926 MB / 1.117 GB, free: 11.25 MB / 0.8731 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 1.844e-05/0.9905, allocations: 8 kB / 1.117 GB, free: 11.24 MB / 0.8731 GB Notification: Performance of matching and sorting (n=240) (initialization): time 0.01096/1.001, allocations: 4.482 MB / 1.122 GB, free: 6.746 MB / 0.8731 GB Notification: Performance of prepare postOptimizeDAE: time 0.003735/1.005, allocations: 6.882 MB / 1.129 GB, free: 15.32 MB / 0.8887 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 4.805e-05/1.005, allocations: 16 kB / 1.129 GB, free: 15.3 MB / 0.8887 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.001866/1.007, allocations: 0.638 MB / 1.129 GB, free: 14.66 MB / 0.8887 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.003591/1.011, allocations: 0.7331 MB / 1.13 GB, free: 13.93 MB / 0.8887 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.00829/1.019, allocations: 5.349 MB / 1.135 GB, free: 8.445 MB / 0.8887 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.003668/1.023, allocations: 0.5716 MB / 1.136 GB, free: 7.871 MB / 0.8887 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0005165/1.023, allocations: 99.94 kB / 1.136 GB, free: 7.773 MB / 0.8887 GB Notification: Performance of prepare postOptimizeDAE: time 2.373e-05/1.023, allocations: 7.953 kB / 1.136 GB, free: 7.766 MB / 0.8887 GB Notification: Performance of postOpt replaceHomotopyWithSimplified (initialization): time 0.01238/1.036, allocations: 4.332 MB / 1.14 GB, free: 3.426 MB / 0.8887 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 0.0001014/1.036, allocations: 24.23 kB / 1.14 GB, free: 3.402 MB / 0.8887 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.001041/1.037, allocations: 449.8 kB / 1.14 GB, free: 2.961 MB / 0.8887 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.003377/1.04, allocations: 0.7292 MB / 1.141 GB, free: 2.23 MB / 0.8887 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.007008/1.047, allocations: 5.249 MB / 1.146 GB, free: 12.84 MB / 0.9044 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.003272/1.051, allocations: 0.5213 MB / 1.147 GB, free: 12.32 MB / 0.9044 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0003543/1.051, allocations: 96.27 kB / 1.147 GB, free: 12.23 MB / 0.9044 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 79 * 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 (205): * Single equations (assignments): 204 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (linear and non-linear blocks): 0 * Torn equation systems: 1 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems: 1 {(6,75.0%) 30} * Non-linear torn systems: 0 Notification: Performance of prepare postOptimizeDAE: time 0.002672/1.054, allocations: 1.222 MB / 1.148 GB, free: 10.99 MB / 0.9044 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0005268/1.054, allocations: 110.6 kB / 1.148 GB, free: 10.88 MB / 0.9044 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.01081/1.065, allocations: 3.951 MB / 1.152 GB, free: 6.895 MB / 0.9044 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 3.368e-05/1.065, allocations: 20 kB / 1.152 GB, free: 6.875 MB / 0.9044 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 1.309e-05/1.065, allocations: 4 kB / 1.152 GB, free: 6.871 MB / 0.9044 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 2.312e-05/1.065, allocations: 7.984 kB / 1.152 GB, free: 6.863 MB / 0.9044 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.01708/1.082, allocations: 7.413 MB / 1.159 GB, free: 15.32 MB / 0.92 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 1.542e-05/1.082, allocations: 4 kB / 1.159 GB, free: 15.31 MB / 0.92 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.002457/1.085, allocations: 0.5225 MB / 1.16 GB, free: 14.79 MB / 0.92 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.001133/1.086, allocations: 473.8 kB / 1.16 GB, free: 14.32 MB / 0.92 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0001532/1.086, allocations: 43.95 kB / 1.16 GB, free: 14.28 MB / 0.92 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.007337/1.094, allocations: 5.225 MB / 1.165 GB, free: 8.918 MB / 0.92 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 9.829e-06/1.094, allocations: 15.97 kB / 1.165 GB, free: 8.902 MB / 0.92 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.01/1.104, allocations: 4.124 MB / 1.169 GB, free: 4.57 MB / 0.92 GB Notification: Performance of postOpt removeConstants (simulation): time 0.001192/1.105, allocations: 499.3 kB / 1.17 GB, free: 4.062 MB / 0.92 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0002651/1.105, allocations: 24 kB / 1.17 GB, free: 4.039 MB / 0.92 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.00244/1.108, allocations: 399.3 kB / 1.17 GB, free: 3.648 MB / 0.92 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0002584/1.108, allocations: 100.8 kB / 1.17 GB, free: 3.551 MB / 0.92 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0001311/1.108, allocations: 63.91 kB / 1.17 GB, free: 3.488 MB / 0.92 GB Notification: Performance of sorting global known variables: time 0.001028/1.109, allocations: 0.6864 MB / 1.171 GB, free: 2.809 MB / 0.92 GB Notification: Performance of sort global known variables: time 1.3e-07/1.109, allocations: 3.938 kB / 1.171 GB, free: 2.805 MB / 0.92 GB Notification: Performance of remove unused functions: time 0.004323/1.113, allocations: 1.435 MB / 1.173 GB, free: 1.363 MB / 0.92 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 22 * 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 (94): * Single equations (assignments): 93 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (linear and non-linear blocks): 0 * Torn equation systems: 1 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems: 1 {(4,100.0%) 32} * Non-linear torn systems: 0 Notification: Performance of Backend phase and start with SimCode phase: time 0.0003384/1.114, allocations: 143 kB / 1.173 GB, free: 1.211 MB / 0.92 GB Notification: Performance of simCode: created initialization part: time 0.01654/1.13, allocations: 6.457 MB / 1.179 GB, free: 10.73 MB / 0.9356 GB Notification: Performance of simCode: created event and clocks part: time 1.26e-05/1.13, allocations: 0 / 1.179 GB, free: 10.73 MB / 0.9356 GB Notification: Performance of simCode: created simulation system equations: time 0.005366/1.136, allocations: 2.002 MB / 1.181 GB, free: 8.715 MB / 0.9356 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.001452/1.137, allocations: 148.6 kB / 1.181 GB, free: 8.57 MB / 0.9356 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.02091/1.158, allocations: 7.7 MB / 1.189 GB, free: 0.7812 MB / 0.9356 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.002416/1.161, allocations: 2.235 MB / 1.191 GB, free: 14.51 MB / 0.9512 GB Notification: Performance of simCode: alias equations: time 0.003826/1.164, allocations: 1.208 MB / 1.192 GB, free: 13.3 MB / 0.9512 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0005066/1.165, allocations: 127.3 kB / 1.192 GB, free: 13.18 MB / 0.9512 GB Notification: Performance of SimCode: time 8.82e-07/1.165, allocations: 0 / 1.192 GB, free: 13.18 MB / 0.9512 GB Notification: Performance of Templates: time 0.04179/1.207, allocations: 24.82 MB / 1.216 GB, free: 4.434 MB / 0.9669 GB make -j1 -f Buildings_latest_Buildings.Electrical.AC.ThreePhasesUnbalanced.Conversion.Examples.TransformerStepUpYD.makefile (rm -f Buildings_latest_Buildings.Electrical.AC.ThreePhasesUnbalanced.Conversion.Examples.TransformerStepUpYD.pipe ; mkfifo Buildings_latest_Buildings.Electrical.AC.ThreePhasesUnbalanced.Conversion.Examples.TransformerStepUpYD.pipe ; head -c 1048576 < Buildings_latest_Buildings.Electrical.AC.ThreePhasesUnbalanced.Conversion.Examples.TransformerStepUpYD.pipe >> ../files/Buildings_latest_Buildings.Electrical.AC.ThreePhasesUnbalanced.Conversion.Examples.TransformerStepUpYD.sim & ./Buildings_latest_Buildings.Electrical.AC.ThreePhasesUnbalanced.Conversion.Examples.TransformerStepUpYD -abortSlowSimulation -alarm=480 -emit_protected -lv LOG_STATS > Buildings_latest_Buildings.Electrical.AC.ThreePhasesUnbalanced.Conversion.Examples.TransformerStepUpYD.pipe 2>&1) diffSimulationResults("Buildings_latest_Buildings.Electrical.AC.ThreePhasesUnbalanced.Conversion.Examples.TransformerStepUpYD_res.mat","/mnt/ReferenceFiles/Buildings/csv/master/Buildings_Electrical_AC_ThreePhasesUnbalanced_Conversion_Examples_TransformerStepUpYD.csv","../files/Buildings_latest_Buildings.Electrical.AC.ThreePhasesUnbalanced.Conversion.Examples.TransformerStepUpYD.diff",relTol=0.003,relTolDiffMinMax=0.003,rangeDelta=0.001) Reference file matches