Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_9_Buildings.Fluid.Examples.Performance.PressureDrop.SeriesParallelFlowOptimised.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 9.1.2-maint.9.1.x/package.mo", uses=false) Using package Buildings with version 9.1.2 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 9.1.2-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.Fluid.Examples.Performance.PressureDrop.SeriesParallelFlowOptimised,tolerance=1e-06,outputFormat="mat",numberOfIntervals=5000,variableFilter="time|sin.ports.1..m_flow",fileNamePrefix="Buildings_9_Buildings.Fluid.Examples.Performance.PressureDrop.SeriesParallelFlowOptimised") translateModel(Buildings.Fluid.Examples.Performance.PressureDrop.SeriesParallelFlowOptimised,tolerance=1e-06,outputFormat="mat",numberOfIntervals=5000,variableFilter="time|sin.ports.1..m_flow",fileNamePrefix="Buildings_9_Buildings.Fluid.Examples.Performance.PressureDrop.SeriesParallelFlowOptimised") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001001/0.001001, allocations: 98.88 kB / 16.02 MB, free: 76 kB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001189/0.001189, allocations: 185.3 kB / 16.92 MB, free: 6.766 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.375/1.375, allocations: 223.3 MB / 241 MB, free: 5.363 MB / 190.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 9.1.2-maint.9.1.x/package.mo): time 2.367/2.367, allocations: 390.9 MB / 0.667 GB, free: 2.402 MB / 0.5137 GB Notification: Performance of FrontEnd - loaded program: time 0.0003602/0.0003602, allocations: 12 kB / 0.8166 GB, free: 13.28 MB / 0.67 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.7192/0.7196, allocations: 142.4 MB / 0.9557 GB, free: 7.992 MB / 0.7169 GB Notification: Performance of NFInst.instantiate(Buildings.Fluid.Examples.Performance.PressureDrop.SeriesParallelFlowOptimised): time 0.1777/0.8973, allocations: 163.4 MB / 1.115 GB, free: 11.55 MB / 0.8731 GB Notification: Performance of NFInst.instExpressions: time 0.003931/0.9013, allocations: 2.193 MB / 1.117 GB, free: 9.355 MB / 0.8731 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.0004032/0.9017, allocations: 19.88 kB / 1.117 GB, free: 9.336 MB / 0.8731 GB Notification: Performance of NFTyping.typeComponents: time 0.000696/0.9024, allocations: 210.8 kB / 1.118 GB, free: 9.129 MB / 0.8731 GB Notification: Performance of NFTyping.typeBindings: time 0.001584/0.904, allocations: 0.6215 MB / 1.118 GB, free: 8.508 MB / 0.8731 GB Notification: Performance of NFTyping.typeClassSections: time 0.001177/0.9052, allocations: 393.6 kB / 1.119 GB, free: 8.125 MB / 0.8731 GB Notification: Performance of NFFlatten.flatten: time 0.003651/0.9089, allocations: 3.797 MB / 1.122 GB, free: 4.316 MB / 0.8731 GB Notification: Performance of NFFlatten.resolveConnections: time 0.002848/0.9117, allocations: 2.359 MB / 1.125 GB, free: 1.945 MB / 0.8731 GB Notification: Performance of NFEvalConstants.evaluate: time 0.002521/0.9143, allocations: 1.113 MB / 1.126 GB, free: 0.8281 MB / 0.8731 GB Notification: Performance of NFSimplifyModel.simplify: time 0.001243/0.9155, allocations: 0.8713 MB / 1.127 GB, free: 15.95 MB / 0.8887 GB Notification: Performance of NFPackage.collectConstants: time 0.0001032/0.9156, allocations: 48 kB / 1.127 GB, free: 15.91 MB / 0.8887 GB Notification: Performance of NFFlatten.collectFunctions: time 0.001641/0.9173, allocations: 0.9003 MB / 1.127 GB, free: 15 MB / 0.8887 GB Notification: Performance of NFScalarize.scalarize: time 0.0003402/0.9176, allocations: 322.8 kB / 1.128 GB, free: 14.69 MB / 0.8887 GB Notification: Performance of NFVerifyModel.verify: time 0.0007207/0.9184, allocations: 0.5962 MB / 1.128 GB, free: 14.08 MB / 0.8887 GB Notification: Performance of NFConvertDAE.convert: time 0.001294/0.9197, allocations: 1.161 MB / 1.129 GB, free: 12.92 MB / 0.8887 GB Notification: Performance of FrontEnd - DAE generated: time 4.399e-06/0.9197, allocations: 0 / 1.129 GB, free: 12.92 MB / 0.8887 GB Notification: Performance of FrontEnd: time 1.794e-06/0.9197, allocations: 0 / 1.129 GB, free: 12.92 MB / 0.8887 GB Notification: Performance of Transformations before backend: time 1.317e-05/0.9197, allocations: 0 / 1.129 GB, free: 12.92 MB / 0.8887 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 136 * Number of variables: 136 Notification: Performance of Generate backend data structure: time 0.002516/0.9222, allocations: 1.483 MB / 1.131 GB, free: 11.38 MB / 0.8887 GB Notification: Performance of prepare preOptimizeDAE: time 4.466e-05/0.9223, allocations: 8.031 kB / 1.131 GB, free: 11.37 MB / 0.8887 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0008107/0.9231, allocations: 198.3 kB / 1.131 GB, free: 11.17 MB / 0.8887 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.001252/0.9244, allocations: 0.8773 MB / 1.132 GB, free: 10.24 MB / 0.8887 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 5.39e-05/0.9244, allocations: 53.25 kB / 1.132 GB, free: 10.18 MB / 0.8887 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001279/0.9246, allocations: 67.92 kB / 1.132 GB, free: 10.12 MB / 0.8887 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.001442/0.926, allocations: 0.9948 MB / 1.133 GB, free: 9.047 MB / 0.8887 GB Notification: Performance of preOpt findStateOrder (simulation): time 1.942e-05/0.926, allocations: 7.938 kB / 1.133 GB, free: 9.039 MB / 0.8887 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 6.861e-05/0.9261, allocations: 32 kB / 1.133 GB, free: 9.008 MB / 0.8887 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 1.55e-05/0.9261, allocations: 12 kB / 1.133 GB, free: 8.996 MB / 0.8887 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.001238/0.9274, allocations: 0.8038 MB / 1.134 GB, free: 8.195 MB / 0.8887 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 0.004515/0.9319, allocations: 4.8 MB / 1.139 GB, free: 3.047 MB / 0.8887 GB Notification: Performance of preOpt comSubExp (simulation): time 0.002471/0.9344, allocations: 4.024 MB / 1.143 GB, free: 14.2 MB / 0.9044 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0004866/0.9349, allocations: 353.2 kB / 1.143 GB, free: 13.85 MB / 0.9044 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0002822/0.9352, allocations: 198.5 kB / 1.143 GB, free: 13.62 MB / 0.9044 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.0005304/0.9357, allocations: 336.8 kB / 1.143 GB, free: 13.27 MB / 0.9044 GB Notification: Performance of preOpt simplifyInStream (simulation): time 0.0003486/0.9361, allocations: 27.69 kB / 1.143 GB, free: 13.24 MB / 0.9044 GB Notification: Performance of pre-optimization done (n=35): time 2.144e-06/0.9361, allocations: 0 / 1.143 GB, free: 13.24 MB / 0.9044 GB Notification: Performance of matching and sorting (n=35): time 0.004578/0.9407, allocations: 1.611 MB / 1.145 GB, free: 11.6 MB / 0.9044 GB Notification: Performance of inlineWhenForInitialization (initialization): time 5.214e-05/0.9408, allocations: 81.11 kB / 1.145 GB, free: 11.5 MB / 0.9044 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.001493/0.9423, allocations: 1.18 MB / 1.146 GB, free: 10.31 MB / 0.9044 GB Notification: Performance of collectPreVariables (initialization): time 6.386e-05/0.9423, allocations: 41.69 kB / 1.146 GB, free: 10.26 MB / 0.9044 GB Notification: Performance of collectInitialEqns (initialization): time 0.0004233/0.9428, allocations: 0.5122 MB / 1.147 GB, free: 9.746 MB / 0.9044 GB Notification: Performance of collectInitialBindings (initialization): time 0.0001003/0.9429, allocations: 130.2 kB / 1.147 GB, free: 9.617 MB / 0.9044 GB Notification: Performance of simplifyInitialFunctions (initialization): time 7.04e-05/0.943, allocations: 45.69 kB / 1.147 GB, free: 9.566 MB / 0.9044 GB Notification: Performance of setup shared object (initialization): time 0.0001074/0.9431, allocations: 326 kB / 1.147 GB, free: 9.242 MB / 0.9044 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.000397/0.9435, allocations: 232.9 kB / 1.147 GB, free: 9.016 MB / 0.9044 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0006371/0.9441, allocations: 0.572 MB / 1.148 GB, free: 8.301 MB / 0.9044 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0009529/0.9451, allocations: 0.69 MB / 1.149 GB, free: 7.531 MB / 0.9044 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 4.278e-06/0.9451, allocations: 0 / 1.149 GB, free: 7.531 MB / 0.9044 GB Notification: Performance of matching and sorting (n=58) (initialization): time 0.002293/0.9474, allocations: 1.119 MB / 1.15 GB, free: 6.395 MB / 0.9044 GB Notification: Performance of prepare postOptimizeDAE: time 0.0001851/0.9476, allocations: 279.1 kB / 1.15 GB, free: 6.039 MB / 0.9044 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 9.768e-06/0.9476, allocations: 8 kB / 1.15 GB, free: 6.031 MB / 0.9044 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.001212/0.9488, allocations: 353.6 kB / 1.15 GB, free: 5.684 MB / 0.9044 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0003886/0.9492, allocations: 107.8 kB / 1.15 GB, free: 5.578 MB / 0.9044 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.001001/0.9502, allocations: 1.014 MB / 1.151 GB, free: 4.539 MB / 0.9044 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001043/0.9513, allocations: 87.88 kB / 1.152 GB, free: 4.453 MB / 0.9044 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 5.418e-05/0.9514, allocations: 24 kB / 1.152 GB, free: 4.43 MB / 0.9044 GB Notification: Performance of prepare postOptimizeDAE: time 1.128e-05/0.9514, allocations: 5.719 kB / 1.152 GB, free: 4.426 MB / 0.9044 GB Notification: Performance of postOpt replaceHomotopyWithSimplified (initialization): time 0.001394/0.9528, allocations: 0.7902 MB / 1.152 GB, free: 3.625 MB / 0.9044 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 8.205e-06/0.9528, allocations: 4 kB / 1.152 GB, free: 3.621 MB / 0.9044 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0005153/0.9533, allocations: 221.3 kB / 1.153 GB, free: 3.402 MB / 0.9044 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0003674/0.9537, allocations: 107.8 kB / 1.153 GB, free: 3.297 MB / 0.9044 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.00333/0.957, allocations: 2.905 MB / 1.156 GB, free: 260 kB / 0.9044 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001045/0.9581, allocations: 99.8 kB / 1.156 GB, free: 160 kB / 0.9044 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 4.43e-05/0.9582, allocations: 24 kB / 1.156 GB, free: 136 kB / 0.9044 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 24 * Number of states: 0 () * Number of discrete variables: 5 (pulse_m_flow.count,$PRE.pulse_m_flow.count,pulse_m_flow.T_start,$PRE.pulse_m_flow.T_start,$whenCondition1) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (38): * Single equations (assignments): 36 * Array equations: 0 * Algorithm blocks: 1 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 1 * 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): 1 system {(1,19)} Notification: Performance of prepare postOptimizeDAE: time 0.0006741/0.9588, allocations: 478.3 kB / 1.156 GB, free: 15.66 MB / 0.92 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0001589/0.959, allocations: 106.6 kB / 1.156 GB, free: 15.55 MB / 0.92 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.001399/0.9604, allocations: 0.7776 MB / 1.157 GB, free: 14.76 MB / 0.92 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 8.145e-06/0.9604, allocations: 7.984 kB / 1.157 GB, free: 14.75 MB / 0.92 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 3.446e-06/0.9604, allocations: 0 / 1.157 GB, free: 14.75 MB / 0.92 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 4.949e-06/0.9605, allocations: 7.938 kB / 1.157 GB, free: 14.75 MB / 0.92 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 postOpt removeSimpleEquations (simulation): time 0.00295/0.9634, allocations: 2.133 MB / 1.159 GB, free: 12.47 MB / 0.92 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 5.21e-06/0.9634, allocations: 0 / 1.159 GB, free: 12.47 MB / 0.92 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0003338/0.9638, allocations: 87.81 kB / 1.159 GB, free: 12.39 MB / 0.92 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0003818/0.9642, allocations: 176.7 kB / 1.159 GB, free: 12.21 MB / 0.92 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 2.955e-05/0.9642, allocations: 11.94 kB / 1.159 GB, free: 12.2 MB / 0.92 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.0007454/0.965, allocations: 0.8643 MB / 1.16 GB, free: 11.31 MB / 0.92 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 4.618e-06/0.965, allocations: 4.031 kB / 1.16 GB, free: 11.3 MB / 0.92 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.001266/0.9662, allocations: 0.8556 MB / 1.161 GB, free: 10.41 MB / 0.92 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0004236/0.9667, allocations: 235.7 kB / 1.161 GB, free: 10.16 MB / 0.92 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001053/0.9668, allocations: 8 kB / 1.161 GB, free: 10.15 MB / 0.92 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0006578/0.9675, allocations: 71.81 kB / 1.161 GB, free: 10.08 MB / 0.92 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 9.39e-05/0.9676, allocations: 35.91 kB / 1.161 GB, free: 10.05 MB / 0.92 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 2.442e-05/0.9676, allocations: 12 kB / 1.161 GB, free: 10.04 MB / 0.92 GB Notification: Performance of sorting global known variables: time 0.001098/0.9687, allocations: 0.8366 MB / 1.162 GB, free: 9.191 MB / 0.92 GB Notification: Performance of sort global known variables: time 3.3e-07/0.9687, allocations: 0 / 1.162 GB, free: 9.191 MB / 0.92 GB Notification: Performance of remove unused functions: time 0.00144/0.9702, allocations: 0.5032 MB / 1.163 GB, free: 8.688 MB / 0.92 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 8 * Number of states: 0 () * Number of discrete variables: 3 ($whenCondition1,pulse_m_flow.T_start,pulse_m_flow.count) * Number of discrete states: 1 (pulse_m_flow.count) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (25): * Single equations (assignments): 22 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 2 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 1 * 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): 1 system {(1,10)} Notification: Performance of Backend phase and start with SimCode phase: time 0.0004924/0.9707, allocations: 180.7 kB / 1.163 GB, free: 8.512 MB / 0.92 GB Notification: Performance of simCode: created initialization part: time 0.00228/0.9729, allocations: 1.161 MB / 1.164 GB, free: 7.316 MB / 0.92 GB Notification: Performance of simCode: created event and clocks part: time 3.737e-06/0.973, allocations: 7.938 kB / 1.164 GB, free: 7.309 MB / 0.92 GB Notification: Performance of simCode: created simulation system equations: time 0.0004463/0.9734, allocations: 240.5 kB / 1.164 GB, free: 7.074 MB / 0.92 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.003772/0.9772, allocations: 0.6513 MB / 1.165 GB, free: 6.426 MB / 0.92 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.00326/0.9805, allocations: 2.254 MB / 1.167 GB, free: 4.113 MB / 0.92 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0007909/0.9813, allocations: 1.213 MB / 1.168 GB, free: 2.871 MB / 0.92 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0002055/0.9815, allocations: 71.44 kB / 1.168 GB, free: 2.801 MB / 0.92 GB Notification: Performance of SimCode: time 1.032e-06/0.9815, allocations: 0 / 1.168 GB, free: 2.801 MB / 0.92 GB Notification: Performance of Templates: time 0.03126/1.013, allocations: 22.45 MB / 1.19 GB, free: 12.46 MB / 0.9512 GB make -j1 -f Buildings_9_Buildings.Fluid.Examples.Performance.PressureDrop.SeriesParallelFlowOptimised.makefile (rm -f Buildings_9_Buildings.Fluid.Examples.Performance.PressureDrop.SeriesParallelFlowOptimised.pipe ; mkfifo Buildings_9_Buildings.Fluid.Examples.Performance.PressureDrop.SeriesParallelFlowOptimised.pipe ; head -c 1048576 < Buildings_9_Buildings.Fluid.Examples.Performance.PressureDrop.SeriesParallelFlowOptimised.pipe >> ../files/Buildings_9_Buildings.Fluid.Examples.Performance.PressureDrop.SeriesParallelFlowOptimised.sim & ./Buildings_9_Buildings.Fluid.Examples.Performance.PressureDrop.SeriesParallelFlowOptimised -abortSlowSimulation -alarm=480 -emit_protected -lv LOG_STATS > Buildings_9_Buildings.Fluid.Examples.Performance.PressureDrop.SeriesParallelFlowOptimised.pipe 2>&1) diffSimulationResults("Buildings_9_Buildings.Fluid.Examples.Performance.PressureDrop.SeriesParallelFlowOptimised_res.mat","/mnt/ReferenceFiles/Buildings/csv/maint_9.1.x/Buildings_Fluid_Examples_Performance_PressureDrop_SeriesParallelFlowOptimised.csv","/var/lib/jenkins1/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/files/Buildings_9_Buildings.Fluid.Examples.Performance.PressureDrop.SeriesParallelFlowOptimised.diff",relTol=0.003,relTolDiffMinMax=0.003,rangeDelta=0.001) Reference file matches