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 0.001258/0.001258, allocations: 109.7 kB / 17.16 MB, free: 6.324 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001242/0.001242, allocations: 202.9 kB / 18.08 MB, free: 5.422 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.299/1.299, allocations: 222.9 MB / 241.8 MB, free: 15.49 MB / 206.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ScalableTestSuite 2.2.0-master/package.mo): time 0.9205/0.9205, allocations: 119.3 MB / 411.2 MB, free: 9.723 MB / 334.1 MB Notification: Performance of FrontEnd - loaded program: time 0.001171/0.001171, allocations: 60.05 kB / 0.4909 GB, free: 14.15 MB / 430.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.4354/0.4366, allocations: 80.68 MB / 0.5697 GB, free: 43.53 MB / 462.3 MB Notification: Performance of NFInst.instantiate(ScalableTestSuite.Thermal.Advection.ScaledExperiments.SimpleAdvection_N_100): time 0.001968/0.4386, allocations: 1.419 MB / 0.5711 GB, free: 42.41 MB / 462.3 MB Notification: Performance of NFInst.instExpressions: time 0.0004804/0.4391, allocations: 421.7 kB / 0.5715 GB, free: 42.09 MB / 462.3 MB Notification: Performance of NFInst.updateImplicitVariability: time 3.307e-05/0.4392, allocations: 0 / 0.5715 GB, free: 42.09 MB / 462.3 MB Notification: Performance of NFTyping.typeComponents: time 8.634e-05/0.4393, allocations: 5.219 kB / 0.5715 GB, free: 42.08 MB / 462.3 MB Notification: Performance of NFTyping.typeBindings: time 0.0002027/0.4395, allocations: 46.02 kB / 0.5715 GB, free: 42.05 MB / 462.3 MB Notification: Performance of NFTyping.typeClassSections: time 3.692e-05/0.4395, allocations: 6.422 kB / 0.5715 GB, free: 42.04 MB / 462.3 MB Notification: Performance of NFFlatten.flatten: time 0.0004293/0.44, allocations: 0.682 MB / 0.5722 GB, free: 41.7 MB / 462.3 MB Notification: Performance of NFFlatten.resolveConnections: time 4.392e-05/0.44, allocations: 13.7 kB / 0.5722 GB, free: 41.69 MB / 462.3 MB Notification: Performance of NFEvalConstants.evaluate: time 0.0001874/0.4402, allocations: 231 kB / 0.5724 GB, free: 41.59 MB / 462.3 MB Notification: Performance of NFSimplifyModel.simplify: time 0.0004328/0.4406, allocations: 464.6 kB / 0.5729 GB, free: 41.36 MB / 462.3 MB Notification: Performance of NFPackage.collectConstants: time 8.12e-05/0.4407, allocations: 31.94 kB / 0.5729 GB, free: 41.36 MB / 462.3 MB Notification: Performance of NFFlatten.collectFunctions: time 0.0001534/0.4409, allocations: 31.62 kB / 0.5729 GB, free: 41.36 MB / 462.3 MB Notification: Performance of NFScalarize.scalarize: time 0.0003565/0.4413, allocations: 0.6761 MB / 0.5736 GB, free: 40.98 MB / 462.3 MB Notification: Performance of NFVerifyModel.verify: time 0.0005243/0.4418, allocations: 0.5933 MB / 0.5742 GB, free: 40.7 MB / 462.3 MB Notification: Performance of NFConvertDAE.convert: time 0.0003989/0.4422, allocations: 0.6045 MB / 0.5748 GB, free: 40.44 MB / 462.3 MB Notification: Performance of FrontEnd - DAE generated: time 4.188e-06/0.4422, allocations: 0 / 0.5748 GB, free: 40.44 MB / 462.3 MB Notification: Performance of FrontEnd: time 5.31e-07/0.4422, allocations: 0 / 0.5748 GB, free: 40.44 MB / 462.3 MB Notification: Performance of Transformations before backend: time 1.053e-05/0.4422, allocations: 0 / 0.5748 GB, free: 40.44 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 0.003264/0.4455, allocations: 1.669 MB / 0.5764 GB, free: 39.32 MB / 462.3 MB Notification: Performance of prepare preOptimizeDAE: time 3.35e-05/0.4455, allocations: 14.05 kB / 0.5764 GB, free: 39.32 MB / 462.3 MB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0001773/0.4457, allocations: 119.9 kB / 0.5765 GB, free: 39.27 MB / 462.3 MB Notification: Performance of preOpt evaluateParameters (simulation): time 0.000538/0.4463, allocations: 461.8 kB / 0.577 GB, free: 38.91 MB / 462.3 MB Notification: Performance of preOpt simplifyIfEquations (simulation): time 3.752e-05/0.4463, allocations: 57.66 kB / 0.577 GB, free: 38.88 MB / 462.3 MB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001641/0.4465, allocations: 130.3 kB / 0.5771 GB, free: 38.82 MB / 462.3 MB Notification: Performance of preOpt clockPartitioning (simulation): time 0.00132/0.4478, allocations: 0.9682 MB / 0.5781 GB, free: 38.28 MB / 462.3 MB Notification: Performance of preOpt findStateOrder (simulation): time 1.719e-05/0.4478, allocations: 0 / 0.5781 GB, free: 38.28 MB / 462.3 MB Notification: Performance of preOpt replaceEdgeChange (simulation): time 8.015e-05/0.4479, allocations: 30.47 kB / 0.5781 GB, free: 38.25 MB / 462.3 MB Notification: Performance of preOpt inlineArrayEqn (simulation): time 3.023e-05/0.4479, allocations: 19.38 kB / 0.5781 GB, free: 38.25 MB / 462.3 MB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0008262/0.4488, allocations: 0.5839 MB / 0.5787 GB, free: 37.99 MB / 462.3 MB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.004586/0.4534, allocations: 2.667 MB / 0.5813 GB, free: 36.37 MB / 462.3 MB Notification: Performance of preOpt comSubExp (simulation): time 0.001714/0.4551, allocations: 1.267 MB / 0.5825 GB, free: 35.67 MB / 462.3 MB Notification: Performance of preOpt resolveLoops (simulation): time 0.000512/0.4556, allocations: 442.1 kB / 0.583 GB, free: 35.45 MB / 462.3 MB Notification: Performance of preOpt evalFunc (simulation): time 6.787e-05/0.4557, allocations: 10.5 kB / 0.583 GB, free: 35.45 MB / 462.3 MB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 1.742e-05/0.4557, allocations: 46.72 kB / 0.583 GB, free: 35.39 MB / 462.3 MB Notification: Performance of pre-optimization done (n=101): time 1.953e-06/0.4557, allocations: 1.062 kB / 0.583 GB, free: 35.39 MB / 462.3 MB Notification: Performance of matching and sorting (n=101): time 0.001786/0.4575, allocations: 1.292 MB / 0.5843 GB, free: 34.79 MB / 462.3 MB Notification: Performance of inlineWhenForInitialization (initialization): time 2.905e-05/0.4576, allocations: 60.41 kB / 0.5843 GB, free: 34.71 MB / 462.3 MB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0002562/0.4578, allocations: 401.9 kB / 0.5847 GB, free: 34.32 MB / 462.3 MB Notification: Performance of collectPreVariables (initialization): time 4.771e-05/0.4579, allocations: 41.7 kB / 0.5848 GB, free: 34.27 MB / 462.3 MB Notification: Performance of collectInitialEqns (initialization): time 9.534e-05/0.458, allocations: 312.8 kB / 0.5851 GB, free: 33.96 MB / 462.3 MB Notification: Performance of collectInitialBindings (initialization): time 0.0002293/0.4582, allocations: 477.3 kB / 0.5855 GB, free: 33.48 MB / 462.3 MB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0002511/0.4585, allocations: 251.6 kB / 0.5858 GB, free: 33.23 MB / 462.3 MB Notification: Performance of setup shared object (initialization): time 4.662e-05/0.4585, allocations: 341.9 kB / 0.5861 GB, free: 32.89 MB / 462.3 MB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0006773/0.4592, allocations: 0.6245 MB / 0.5867 GB, free: 32.27 MB / 462.3 MB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0006673/0.4599, allocations: 0.6499 MB / 0.5873 GB, free: 31.62 MB / 462.3 MB Notification: Performance of analyzeInitialSystem (initialization): time 0.001363/0.4612, allocations: 1.32 MB / 0.5886 GB, free: 30.3 MB / 462.3 MB Notification: Performance of solveInitialSystemEqSystem (initialization): time 3.537e-06/0.4613, allocations: 3.938 kB / 0.5886 GB, free: 30.3 MB / 462.3 MB Notification: Performance of matching and sorting (n=200) (initialization): time 0.001731/0.463, allocations: 1.71 MB / 0.5903 GB, free: 28.58 MB / 462.3 MB Notification: Performance of prepare postOptimizeDAE: time 1.467e-05/0.463, allocations: 4 kB / 0.5903 GB, free: 28.57 MB / 462.3 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 7.645e-06/0.463, allocations: 8 kB / 0.5903 GB, free: 28.57 MB / 462.3 MB Notification: Performance of postOpt tearingSystem (initialization): time 1.725e-05/0.463, allocations: 4 kB / 0.5903 GB, free: 28.56 MB / 462.3 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001293/0.4643, allocations: 407.5 kB / 0.5907 GB, free: 28.16 MB / 462.3 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 1.337e-05/0.4644, allocations: 8 kB / 0.5907 GB, free: 28.16 MB / 462.3 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0009786/0.4654, allocations: 234.6 kB / 0.5909 GB, free: 27.93 MB / 462.3 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 6.838e-05/0.4654, allocations: 48 kB / 0.591 GB, free: 27.88 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 0.0002741/0.4657, allocations: 281.4 kB / 0.5912 GB, free: 27.59 MB / 462.3 MB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0001194/0.4658, allocations: 83.17 kB / 0.5913 GB, free: 27.51 MB / 462.3 MB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.00131/0.4671, allocations: 1.093 MB / 0.5924 GB, free: 26.41 MB / 462.3 MB Notification: Performance of postOpt inlineArrayEqn (simulation): time 6.392e-06/0.4672, allocations: 8 kB / 0.5924 GB, free: 26.4 MB / 462.3 MB Notification: Performance of postOpt constantLinearSystem (simulation): time 5.551e-06/0.4672, allocations: 0 / 0.5924 GB, free: 26.4 MB / 462.3 MB Notification: Performance of postOpt simplifysemiLinear (simulation): time 8.737e-06/0.4672, allocations: 7.969 kB / 0.5924 GB, free: 26.39 MB / 462.3 MB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.0008408/0.468, allocations: 0.8645 MB / 0.5933 GB, free: 25.48 MB / 462.3 MB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 2.445e-06/0.468, allocations: 0 / 0.5933 GB, free: 25.48 MB / 462.3 MB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.001629/0.4697, allocations: 295.6 kB / 0.5935 GB, free: 25.19 MB / 462.3 MB Notification: Performance of postOpt tearingSystem (simulation): time 6.332e-06/0.4697, allocations: 4 kB / 0.5935 GB, free: 25.18 MB / 462.3 MB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 9.804e-05/0.4698, allocations: 67.86 kB / 0.5936 GB, free: 25.12 MB / 462.3 MB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 4.92e-06/0.4698, allocations: 4 kB / 0.5936 GB, free: 25.11 MB / 462.3 MB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.302e-06/0.4698, allocations: 0 / 0.5936 GB, free: 25.11 MB / 462.3 MB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.001679/0.4715, allocations: 1.558 MB / 0.5951 GB, free: 23.53 MB / 462.3 MB Notification: Performance of postOpt removeConstants (simulation): time 0.0003351/0.4718, allocations: 251.8 kB / 0.5954 GB, free: 23.27 MB / 462.3 MB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001562/0.472, allocations: 55.95 kB / 0.5954 GB, free: 23.21 MB / 462.3 MB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0008235/0.4728, allocations: 167.3 kB / 0.5956 GB, free: 23.05 MB / 462.3 MB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001139/0.473, allocations: 60.91 kB / 0.5956 GB, free: 22.99 MB / 462.3 MB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 5.203e-05/0.473, allocations: 31.98 kB / 0.5957 GB, free: 22.96 MB / 462.3 MB Notification: Performance of sorting global known variables: time 0.0001996/0.4732, allocations: 279.1 kB / 0.5959 GB, free: 22.69 MB / 462.3 MB Notification: Performance of sort global known variables: time 1.1e-07/0.4732, allocations: 4 kB / 0.5959 GB, free: 22.68 MB / 462.3 MB Notification: Performance of remove unused functions: time 0.0008128/0.474, allocations: 0.4916 MB / 0.5964 GB, free: 22.19 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 0.0001959/0.4742, allocations: 184.2 kB / 0.5966 GB, free: 22 MB / 462.3 MB Notification: Performance of simCode: created initialization part: time 0.0013/0.4755, allocations: 1.287 MB / 0.5978 GB, free: 20.71 MB / 462.3 MB Notification: Performance of simCode: created event and clocks part: time 2.284e-06/0.4756, allocations: 3.938 kB / 0.5979 GB, free: 20.71 MB / 462.3 MB Notification: Performance of simCode: created simulation system equations: time 0.0005037/0.4761, allocations: 0.5209 MB / 0.5984 GB, free: 20.19 MB / 462.3 MB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.001338/0.4774, allocations: 469.7 kB / 0.5988 GB, free: 19.73 MB / 462.3 MB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.01116/0.4886, allocations: 8.593 MB / 0.6072 GB, free: 11.09 MB / 462.3 MB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0003813/0.489, allocations: 1.106 MB / 0.6083 GB, free: 9.949 MB / 462.3 MB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0003858/0.4894, allocations: 83.44 kB / 0.6084 GB, free: 9.867 MB / 462.3 MB Notification: Performance of SimCode: time 6.82e-07/0.4894, allocations: 4 kB / 0.6084 GB, free: 9.863 MB / 462.3 MB Notification: Performance of Templates: time 0.01935/0.5087, allocations: 17.2 MB / 0.6252 GB, free: 8.703 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