Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr ScalableTestSuite_ScalableTestSuite.Thermal.Advection.ScaledExperiments.SimpleAdvection_N_100.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/ScalableTestSuite 2.2.0-master/package.mo", uses=false) Using package ScalableTestSuite with version 2.2.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/ScalableTestSuite 2.2.0-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(ScalableTestSuite.Thermal.Advection.ScaledExperiments.SimpleAdvection_N_100,tolerance=1e-06,outputFormat="mat",numberOfIntervals=10000,variableFilter="T.100.|T.1.|T.2.|T.3.|T.4.|T.5.|Ttilde.1.|Ttilde.2.|Ttilde.3.|Ttilde.4.|Ttilde.5.|Ttilde.99.|der.Ttilde.1..|der.Ttilde.2..|der.Ttilde.3..|der.Ttilde.4..|der.Ttilde.5..|time|time",fileNamePrefix="ScalableTestSuite_ScalableTestSuite.Thermal.Advection.ScaledExperiments.SimpleAdvection_N_100") translateModel(ScalableTestSuite.Thermal.Advection.ScaledExperiments.SimpleAdvection_N_100,tolerance=1e-06,outputFormat="mat",numberOfIntervals=10000,variableFilter="T.100.|T.1.|T.2.|T.3.|T.4.|T.5.|Ttilde.1.|Ttilde.2.|Ttilde.3.|Ttilde.4.|Ttilde.5.|Ttilde.99.|der.Ttilde.1..|der.Ttilde.2..|der.Ttilde.3..|der.Ttilde.4..|der.Ttilde.5..|time|time",fileNamePrefix="ScalableTestSuite_ScalableTestSuite.Thermal.Advection.ScaledExperiments.SimpleAdvection_N_100") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001014/0.001014, allocations: 94.56 kB / 17.31 MB, free: 5.656 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001297/0.001297, allocations: 179.9 kB / 18.21 MB, free: 5.25 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.278/1.278, allocations: 223.3 MB / 242.3 MB, free: 184 kB / 190.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ScalableTestSuite 2.2.0-master/package.mo): time 0.8398/0.8398, allocations: 120.5 MB / 413.8 MB, free: 9.117 MB / 334.1 MB Notification: Performance of FrontEnd - loaded program: time 0.0002862/0.0002861, allocations: 12 kB / 0.4955 GB, free: 11.4 MB / 430.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.4372/0.4375, allocations: 82.83 MB / 0.5764 GB, free: 41.96 MB / 462.3 MB Notification: Performance of NFInst.instantiate(ScalableTestSuite.Thermal.Advection.ScaledExperiments.SimpleAdvection_N_100): time 0.001001/0.4385, allocations: 1.076 MB / 0.5775 GB, free: 41.09 MB / 462.3 MB Notification: Performance of NFInst.instExpressions: time 0.0004703/0.439, allocations: 410.5 kB / 0.5779 GB, free: 40.78 MB / 462.3 MB Notification: Performance of NFInst.updateImplicitVariability: time 3.054e-05/0.439, allocations: 0 / 0.5779 GB, free: 40.78 MB / 462.3 MB Notification: Performance of NFTyping.typeComponents: time 8.292e-05/0.4391, allocations: 9.453 kB / 0.5779 GB, free: 40.77 MB / 462.3 MB Notification: Performance of NFTyping.typeBindings: time 0.0002013/0.4393, allocations: 45.92 kB / 0.5779 GB, free: 40.73 MB / 462.3 MB Notification: Performance of NFTyping.typeClassSections: time 2.967e-05/0.4394, allocations: 6.281 kB / 0.5779 GB, free: 40.73 MB / 462.3 MB Notification: Performance of NFFlatten.flatten: time 0.0004702/0.4399, allocations: 0.6867 MB / 0.5786 GB, free: 40.38 MB / 462.3 MB Notification: Performance of NFFlatten.resolveConnections: time 4.779e-05/0.4399, allocations: 5.156 kB / 0.5786 GB, free: 40.38 MB / 462.3 MB Notification: Performance of NFEvalConstants.evaluate: time 0.0001939/0.4401, allocations: 226.9 kB / 0.5788 GB, free: 40.28 MB / 462.3 MB Notification: Performance of NFSimplifyModel.simplify: time 0.0004655/0.4406, allocations: 468.3 kB / 0.5793 GB, free: 40.05 MB / 462.3 MB Notification: Performance of NFPackage.collectConstants: time 6.664e-05/0.4407, allocations: 35.56 kB / 0.5793 GB, free: 40.04 MB / 462.3 MB Notification: Performance of NFFlatten.collectFunctions: time 0.0001082/0.4408, allocations: 31.62 kB / 0.5793 GB, free: 40.04 MB / 462.3 MB Notification: Performance of NFScalarize.scalarize: time 0.000405/0.4412, allocations: 0.6835 MB / 0.58 GB, free: 39.65 MB / 462.3 MB Notification: Performance of NFVerifyModel.verify: time 0.0005716/0.4418, allocations: 0.6144 MB / 0.5806 GB, free: 39.34 MB / 462.3 MB Notification: Performance of NFConvertDAE.convert: time 0.0004256/0.4422, allocations: 0.6112 MB / 0.5812 GB, free: 39.07 MB / 462.3 MB Notification: Performance of FrontEnd - DAE generated: time 3.467e-06/0.4422, allocations: 5.219 kB / 0.5812 GB, free: 39.07 MB / 462.3 MB Notification: Performance of FrontEnd: time 1.302e-06/0.4422, allocations: 0 / 0.5812 GB, free: 39.07 MB / 462.3 MB Notification: Performance of Transformations before backend: time 1.09e-05/0.4422, allocations: 4 kB / 0.5812 GB, free: 39.07 MB / 462.3 MB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 202 * Number of variables: 202 Notification: Performance of Generate backend data structure: time 0.003227/0.4455, allocations: 1.555 MB / 0.5827 GB, free: 38.04 MB / 462.3 MB Notification: Performance of prepare preOptimizeDAE: time 3.461e-05/0.4455, allocations: 9.219 kB / 0.5827 GB, free: 38.04 MB / 462.3 MB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0001882/0.4457, allocations: 116 kB / 0.5829 GB, free: 37.99 MB / 462.3 MB Notification: Performance of preOpt evaluateParameters (simulation): time 0.0005467/0.4463, allocations: 469.4 kB / 0.5833 GB, free: 37.62 MB / 462.3 MB Notification: Performance of preOpt simplifyIfEquations (simulation): time 4.619e-05/0.4463, allocations: 58.66 kB / 0.5834 GB, free: 37.6 MB / 462.3 MB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001622/0.4465, allocations: 122.4 kB / 0.5835 GB, free: 37.54 MB / 462.3 MB Notification: Performance of preOpt clockPartitioning (simulation): time 0.001251/0.4477, allocations: 0.9638 MB / 0.5844 GB, free: 37.01 MB / 462.3 MB Notification: Performance of preOpt findStateOrder (simulation): time 2.101e-05/0.4478, allocations: 3.938 kB / 0.5844 GB, free: 37.01 MB / 462.3 MB Notification: Performance of preOpt replaceEdgeChange (simulation): time 7.007e-05/0.4478, allocations: 38.86 kB / 0.5845 GB, free: 36.98 MB / 462.3 MB Notification: Performance of preOpt inlineArrayEqn (simulation): time 1.672e-05/0.4479, allocations: 18.84 kB / 0.5845 GB, free: 36.98 MB / 462.3 MB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0008031/0.4487, allocations: 0.584 MB / 0.585 GB, free: 36.71 MB / 462.3 MB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.004661/0.4533, allocations: 2.729 MB / 0.5877 GB, free: 34.55 MB / 462.3 MB Notification: Performance of preOpt comSubExp (simulation): time 0.001465/0.4548, allocations: 1.275 MB / 0.589 GB, free: 33.27 MB / 462.3 MB Notification: Performance of preOpt resolveLoops (simulation): time 0.0004338/0.4553, allocations: 427.6 kB / 0.5894 GB, free: 32.85 MB / 462.3 MB Notification: Performance of preOpt evalFunc (simulation): time 5.171e-05/0.4553, allocations: 17 kB / 0.5894 GB, free: 32.83 MB / 462.3 MB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 1.646e-05/0.4553, allocations: 43.5 kB / 0.5894 GB, free: 32.78 MB / 462.3 MB Notification: Performance of pre-optimization done (n=101): time 2.154e-06/0.4554, allocations: 0 / 0.5894 GB, free: 32.78 MB / 462.3 MB Notification: Performance of matching and sorting (n=101): time 0.001567/0.4569, allocations: 1.295 MB / 0.5907 GB, free: 31.48 MB / 462.3 MB Notification: Performance of inlineWhenForInitialization (initialization): time 2.422e-05/0.457, allocations: 64.41 kB / 0.5907 GB, free: 31.4 MB / 462.3 MB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0002768/0.4572, allocations: 393.9 kB / 0.5911 GB, free: 31.01 MB / 462.3 MB Notification: Performance of collectPreVariables (initialization): time 5.154e-05/0.4573, allocations: 41.7 kB / 0.5912 GB, free: 30.96 MB / 462.3 MB Notification: Performance of collectInitialEqns (initialization): time 0.0001148/0.4574, allocations: 316.8 kB / 0.5915 GB, free: 30.65 MB / 462.3 MB Notification: Performance of collectInitialBindings (initialization): time 0.0002329/0.4577, allocations: 473.3 kB / 0.5919 GB, free: 30.18 MB / 462.3 MB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0001171/0.4578, allocations: 129.6 kB / 0.592 GB, free: 30.05 MB / 462.3 MB Notification: Performance of setup shared object (initialization): time 5.063e-05/0.4578, allocations: 345.9 kB / 0.5924 GB, free: 29.7 MB / 462.3 MB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0006935/0.4585, allocations: 0.6206 MB / 0.593 GB, free: 29.08 MB / 462.3 MB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0007045/0.4593, allocations: 0.6499 MB / 0.5936 GB, free: 28.43 MB / 462.3 MB Notification: Performance of analyzeInitialSystem (initialization): time 0.001417/0.4607, allocations: 1.328 MB / 0.5949 GB, free: 27.11 MB / 462.3 MB Notification: Performance of solveInitialSystemEqSystem (initialization): time 3.917e-06/0.4607, allocations: 0 / 0.5949 GB, free: 27.11 MB / 462.3 MB Notification: Performance of matching and sorting (n=200) (initialization): time 0.001781/0.4625, allocations: 1.703 MB / 0.5966 GB, free: 25.39 MB / 462.3 MB Notification: Performance of prepare postOptimizeDAE: time 1.658e-05/0.4625, allocations: 8 kB / 0.5966 GB, free: 25.39 MB / 462.3 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 6.853e-06/0.4625, allocations: 0 / 0.5966 GB, free: 25.39 MB / 462.3 MB Notification: Performance of postOpt tearingSystem (initialization): time 2.005e-05/0.4625, allocations: 4 kB / 0.5966 GB, free: 25.38 MB / 462.3 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001423/0.464, allocations: 415.4 kB / 0.597 GB, free: 24.98 MB / 462.3 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 1.158e-05/0.464, allocations: 4 kB / 0.597 GB, free: 24.97 MB / 462.3 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001176/0.4652, allocations: 226.6 kB / 0.5972 GB, free: 24.75 MB / 462.3 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 6.45e-05/0.4652, allocations: 48 kB / 0.5972 GB, free: 24.7 MB / 462.3 MB Notification: Model statistics after passing the back-end for initialization: * 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 initialization (200): * Single equations (assignments): 200 * 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 0.000332/0.4656, allocations: 289.4 kB / 0.5975 GB, free: 24.41 MB / 462.3 MB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0001169/0.4657, allocations: 87.08 kB / 0.5976 GB, free: 24.32 MB / 462.3 MB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.001459/0.4672, allocations: 1.086 MB / 0.5987 GB, free: 23.23 MB / 462.3 MB Notification: Performance of postOpt inlineArrayEqn (simulation): time 9.157e-06/0.4672, allocations: 8 kB / 0.5987 GB, free: 23.22 MB / 462.3 MB Notification: Performance of postOpt constantLinearSystem (simulation): time 1.047e-05/0.4672, allocations: 7.984 kB / 0.5987 GB, free: 23.21 MB / 462.3 MB Notification: Performance of postOpt simplifysemiLinear (simulation): time 9.678e-06/0.4672, allocations: 3.984 kB / 0.5987 GB, free: 23.21 MB / 462.3 MB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.001013/0.4682, allocations: 0.8567 MB / 0.5995 GB, free: 22.3 MB / 462.3 MB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 2.835e-06/0.4682, allocations: 0 / 0.5995 GB, free: 22.3 MB / 462.3 MB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.001703/0.4699, allocations: 299.5 kB / 0.5998 GB, free: 22.01 MB / 462.3 MB Notification: Performance of postOpt tearingSystem (simulation): time 6.372e-06/0.47, allocations: 4 kB / 0.5998 GB, free: 22 MB / 462.3 MB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 9.162e-05/0.4701, allocations: 63.92 kB / 0.5999 GB, free: 21.94 MB / 462.3 MB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 4.498e-06/0.4701, allocations: 4 kB / 0.5999 GB, free: 21.94 MB / 462.3 MB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.704e-06/0.4701, allocations: 3.938 kB / 0.5999 GB, free: 21.93 MB / 462.3 MB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.001533/0.4716, allocations: 1.562 MB / 0.6014 GB, free: 20.35 MB / 462.3 MB Notification: Performance of postOpt removeConstants (simulation): time 0.0003383/0.472, allocations: 251.8 kB / 0.6016 GB, free: 20.08 MB / 462.3 MB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001327/0.4721, allocations: 55.89 kB / 0.6017 GB, free: 20.03 MB / 462.3 MB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0009431/0.4731, allocations: 171.3 kB / 0.6019 GB, free: 19.86 MB / 462.3 MB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001027/0.4732, allocations: 56.91 kB / 0.6019 GB, free: 19.8 MB / 462.3 MB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 4.615e-05/0.4732, allocations: 35.98 kB / 0.6019 GB, free: 19.77 MB / 462.3 MB Notification: Performance of sorting global known variables: time 0.0001925/0.4734, allocations: 279.1 kB / 0.6022 GB, free: 19.5 MB / 462.3 MB Notification: Performance of sort global known variables: time 1.31e-07/0.4734, allocations: 0 / 0.6022 GB, free: 19.5 MB / 462.3 MB Notification: Performance of remove unused functions: time 0.0007466/0.4742, allocations: 0.4955 MB / 0.6027 GB, free: 19 MB / 462.3 MB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 1 * Number of states: 99 (Ttilde[1],Ttilde[2],Ttilde[3],Ttilde[4],Ttilde[5],Ttilde[6],Ttilde[7],Ttilde[8],Ttilde[9],Ttilde[10],Ttilde[11],Ttilde[12],Ttilde[13],Ttilde[14],Ttilde[15],Ttilde[16],Ttilde[17],Ttilde[18],Ttilde[19],Ttilde[20],Ttilde[21],Ttilde[22],Ttilde[23],Ttilde[24],Ttilde[25],Ttilde[26],Ttilde[27],Ttilde[28],Ttilde[29],Ttilde[30],Ttilde[31],Ttilde[32],Ttilde[33],Ttilde[34],Ttilde[35],Ttilde[36],Ttilde[37],Ttilde[38],Ttilde[39],Ttilde[40],Ttilde[41],Ttilde[42],Ttilde[43],Ttilde[44],Ttilde[45],Ttilde[46],Ttilde[47],Ttilde[48],Ttilde[49],Ttilde[50],Ttilde[51],Ttilde[52],Ttilde[53],Ttilde[54],Ttilde[55],Ttilde[56],Ttilde[57],Ttilde[58],Ttilde[59],Ttilde[60],Ttilde[61],Ttilde[62],Ttilde[63],Ttilde[64],Ttilde[65],Ttilde[66],Ttilde[67],Ttilde[68],Ttilde[69],Ttilde[70],Ttilde[71],Ttilde[72],Ttilde[73],Ttilde[74],Ttilde[75],Ttilde[76],Ttilde[77],Ttilde[78],Ttilde[79],Ttilde[80],Ttilde[81],Ttilde[82],Ttilde[83],Ttilde[84],Ttilde[85],Ttilde[86],Ttilde[87],Ttilde[88],Ttilde[89],Ttilde[90],Ttilde[91],Ttilde[92],Ttilde[93],Ttilde[94],Ttilde[95],Ttilde[96],Ttilde[97],Ttilde[98],Ttilde[99]) * 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 (103): * Single equations (assignments): 103 * 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 0.0001738/0.4744, allocations: 176.3 kB / 0.6029 GB, free: 18.82 MB / 462.3 MB Notification: Performance of simCode: created initialization part: time 0.001306/0.4757, allocations: 1.287 MB / 0.6041 GB, free: 17.54 MB / 462.3 MB Notification: Performance of simCode: created event and clocks part: time 2.184e-06/0.4757, allocations: 4 kB / 0.6041 GB, free: 17.54 MB / 462.3 MB Notification: Performance of simCode: created simulation system equations: time 0.0005067/0.4762, allocations: 0.5248 MB / 0.6046 GB, free: 17.01 MB / 462.3 MB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.001363/0.4776, allocations: 470.6 kB / 0.6051 GB, free: 16.55 MB / 462.3 MB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.01161/0.4892, allocations: 9.915 MB / 0.6148 GB, free: 6.582 MB / 462.3 MB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0004629/0.4897, allocations: 1.114 MB / 0.6159 GB, free: 5.434 MB / 462.3 MB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0003917/0.4901, allocations: 83.44 kB / 0.6159 GB, free: 5.352 MB / 462.3 MB Notification: Performance of SimCode: time 8.92e-07/0.4901, allocations: 0 / 0.6159 GB, free: 5.352 MB / 462.3 MB Notification: Performance of Templates: time 0.02436/0.5145, allocations: 17.1 MB / 0.6326 GB, free: 4.301 MB / 478.3 MB make -j1 -f ScalableTestSuite_ScalableTestSuite.Thermal.Advection.ScaledExperiments.SimpleAdvection_N_100.makefile (rm -f ScalableTestSuite_ScalableTestSuite.Thermal.Advection.ScaledExperiments.SimpleAdvection_N_100.pipe ; mkfifo ScalableTestSuite_ScalableTestSuite.Thermal.Advection.ScaledExperiments.SimpleAdvection_N_100.pipe ; head -c 1048576 < ScalableTestSuite_ScalableTestSuite.Thermal.Advection.ScaledExperiments.SimpleAdvection_N_100.pipe >> ../files/ScalableTestSuite_ScalableTestSuite.Thermal.Advection.ScaledExperiments.SimpleAdvection_N_100.sim & ./ScalableTestSuite_ScalableTestSuite.Thermal.Advection.ScaledExperiments.SimpleAdvection_N_100 -abortSlowSimulation -alarm=300 -emit_protected -lv LOG_STATS > ScalableTestSuite_ScalableTestSuite.Thermal.Advection.ScaledExperiments.SimpleAdvection_N_100.pipe 2>&1) diffSimulationResults("ScalableTestSuite_ScalableTestSuite.Thermal.Advection.ScaledExperiments.SimpleAdvection_N_100_res.mat","/var/lib/jenkins1/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/ReferenceFiles/ScalableTestSuite/ScalableTestSuite.Thermal.Advection.ScaledExperiments.SimpleAdvection_N_100_res.mat","../files/ScalableTestSuite_ScalableTestSuite.Thermal.Advection.ScaledExperiments.SimpleAdvection_N_100.diff",relTol=0.003,relTolDiffMinMax=0.003,rangeDelta=0.001) Reference file matches