Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_9_Buildings.Fluid.MixingVolumes.Validation.CoupledVolumesSpecializedWaterTemperatureDependentDensity.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.MixingVolumes.Validation.CoupledVolumesSpecializedWaterTemperatureDependentDensity,tolerance=1e-06,outputFormat="mat",numberOfIntervals=5000,variableFilter="time|vol.p|vol1.p|vol.T|vol1.T",fileNamePrefix="Buildings_9_Buildings.Fluid.MixingVolumes.Validation.CoupledVolumesSpecializedWaterTemperatureDependentDensity") translateModel(Buildings.Fluid.MixingVolumes.Validation.CoupledVolumesSpecializedWaterTemperatureDependentDensity,tolerance=1e-06,outputFormat="mat",numberOfIntervals=5000,variableFilter="time|vol.p|vol1.p|vol.T|vol1.T",fileNamePrefix="Buildings_9_Buildings.Fluid.MixingVolumes.Validation.CoupledVolumesSpecializedWaterTemperatureDependentDensity") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001266/0.001267, allocations: 86.72 kB / 15.06 MB, free: 1.09 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001645/0.001645, allocations: 168.7 kB / 15.95 MB, free: 204 kB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.439/1.439, allocations: 223.3 MB / 240 MB, free: 5.336 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 2.357/2.357, allocations: 390.9 MB / 0.666 GB, free: 2.434 MB / 0.5137 GB Notification: Performance of FrontEnd - loaded program: time 0.0003729/0.0003732, allocations: 8 kB / 0.8153 GB, free: 13.59 MB / 0.67 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.7513/0.7516, allocations: 142.4 MB / 0.9544 GB, free: 7.785 MB / 0.7169 GB Notification: Performance of NFInst.instantiate(Buildings.Fluid.MixingVolumes.Validation.CoupledVolumesSpecializedWaterTemperatureDependentDensity): time 0.03322/0.7849, allocations: 29.07 MB / 0.9828 GB, free: 0.5586 MB / 0.7325 GB Notification: Performance of NFInst.instExpressions: time 0.009637/0.7946, allocations: 5.023 MB / 0.9877 GB, free: 12.48 MB / 0.7481 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.001504/0.7961, allocations: 30.66 kB / 0.9878 GB, free: 12.46 MB / 0.7481 GB Notification: Performance of NFTyping.typeComponents: time 0.001231/0.7974, allocations: 283 kB / 0.988 GB, free: 12.23 MB / 0.7481 GB Notification: Performance of NFTyping.typeBindings: time 0.004273/0.8017, allocations: 1.134 MB / 0.9891 GB, free: 11.32 MB / 0.7481 GB Notification: Performance of NFTyping.typeClassSections: time 0.002444/0.8041, allocations: 0.6442 MB / 0.9898 GB, free: 10.88 MB / 0.7481 GB Notification: Performance of NFFlatten.flatten: time 0.003759/0.8079, allocations: 2.436 MB / 0.9921 GB, free: 8.801 MB / 0.7481 GB Notification: Performance of NFFlatten.resolveConnections: time 0.001088/0.809, allocations: 465.2 kB / 0.9926 GB, free: 8.336 MB / 0.7481 GB Notification: Performance of NFEvalConstants.evaluate: time 0.001704/0.8107, allocations: 0.6339 MB / 0.9932 GB, free: 7.699 MB / 0.7481 GB Notification: Performance of NFSimplifyModel.simplify: time 0.001133/0.8119, allocations: 0.5055 MB / 0.9937 GB, free: 7.191 MB / 0.7481 GB Notification: Performance of NFPackage.collectConstants: time 0.0001406/0.812, allocations: 28 kB / 0.9937 GB, free: 7.164 MB / 0.7481 GB Notification: Performance of NFFlatten.collectFunctions: time 0.00254/0.8146, allocations: 0.8615 MB / 0.9946 GB, free: 6.301 MB / 0.7481 GB Notification: Performance of NFScalarize.scalarize: time 0.0002589/0.8149, allocations: 123.4 kB / 0.9947 GB, free: 6.18 MB / 0.7481 GB Notification: Performance of NFVerifyModel.verify: time 0.0003223/0.8152, allocations: 165.3 kB / 0.9948 GB, free: 6.012 MB / 0.7481 GB Notification: Performance of NFConvertDAE.convert: time 0.001777/0.817, allocations: 0.9957 MB / 0.9958 GB, free: 5.016 MB / 0.7481 GB Notification: Performance of FrontEnd - DAE generated: time 6.652e-06/0.817, allocations: 4 kB / 0.9958 GB, free: 5.012 MB / 0.7481 GB Notification: Performance of FrontEnd: time 1.734e-06/0.817, allocations: 0 / 0.9958 GB, free: 5.012 MB / 0.7481 GB Notification: Performance of Transformations before backend: time 3.121e-05/0.817, allocations: 0 / 0.9958 GB, free: 5.012 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: 110 * Number of variables: 110 Notification: Performance of Generate backend data structure: time 0.001832/0.8189, allocations: 0.9747 MB / 0.9968 GB, free: 3.984 MB / 0.7481 GB Notification: Performance of prepare preOptimizeDAE: time 4.805e-05/0.8189, allocations: 8.031 kB / 0.9968 GB, free: 3.977 MB / 0.7481 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.002328/0.8213, allocations: 282.7 kB / 0.997 GB, free: 3.699 MB / 0.7481 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.001449/0.8227, allocations: 0.6429 MB / 0.9977 GB, free: 3.012 MB / 0.7481 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 3.303e-05/0.8228, allocations: 32.94 kB / 0.9977 GB, free: 2.98 MB / 0.7481 GB Notification: Performance of preOpt expandDerOperator (simulation): time 8.812e-05/0.8229, allocations: 51.95 kB / 0.9978 GB, free: 2.93 MB / 0.7481 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.0009808/0.8239, allocations: 0.5243 MB / 0.9983 GB, free: 2.371 MB / 0.7481 GB Notification: Performance of preOpt findStateOrder (simulation): time 2.146e-05/0.8239, allocations: 3.938 kB / 0.9983 GB, free: 2.367 MB / 0.7481 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 5.111e-05/0.824, allocations: 24 kB / 0.9983 GB, free: 2.344 MB / 0.7481 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 1.263e-05/0.824, allocations: 8 kB / 0.9983 GB, free: 2.336 MB / 0.7481 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0007131/0.8247, allocations: 359.7 kB / 0.9986 GB, free: 1.984 MB / 0.7481 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 0.003241/0.8279, allocations: 2.822 MB / 1.001 GB, free: 14.93 MB / 0.7637 GB Notification: Performance of preOpt comSubExp (simulation): time 0.0005592/0.8285, allocations: 315.6 kB / 1.002 GB, free: 14.61 MB / 0.7637 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0002518/0.8288, allocations: 142.1 kB / 1.002 GB, free: 14.46 MB / 0.7637 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0005307/0.8293, allocations: 0.6572 MB / 1.002 GB, free: 13.66 MB / 0.7637 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 3.213e-05/0.8294, allocations: 42.92 kB / 1.003 GB, free: 13.61 MB / 0.7637 GB Notification: Performance of pre-optimization done (n=28): time 2.184e-06/0.8294, allocations: 0 / 1.003 GB, free: 13.61 MB / 0.7637 GB Notification: Performance of matching and sorting (n=40): time 0.006372/0.8358, allocations: 2.082 MB / 1.005 GB, free: 11.44 MB / 0.7637 GB Notification: Performance of inlineWhenForInitialization (initialization): time 6.233e-05/0.8359, allocations: 81.11 kB / 1.005 GB, free: 11.34 MB / 0.7637 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0008058/0.8367, allocations: 0.5108 MB / 1.005 GB, free: 10.82 MB / 0.7637 GB Notification: Performance of collectPreVariables (initialization): time 4.497e-05/0.8367, allocations: 33.7 kB / 1.005 GB, free: 10.79 MB / 0.7637 GB Notification: Performance of collectInitialEqns (initialization): time 0.0002878/0.837, allocations: 336.2 kB / 1.005 GB, free: 10.45 MB / 0.7637 GB Notification: Performance of collectInitialBindings (initialization): time 0.0001446/0.8372, allocations: 138 kB / 1.006 GB, free: 10.31 MB / 0.7637 GB Notification: Performance of simplifyInitialFunctions (initialization): time 2.726e-05/0.8372, allocations: 8 kB / 1.006 GB, free: 10.3 MB / 0.7637 GB Notification: Performance of setup shared object (initialization): time 0.0001974/0.8374, allocations: 366.8 kB / 1.006 GB, free: 9.938 MB / 0.7637 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0003735/0.8378, allocations: 165 kB / 1.006 GB, free: 9.777 MB / 0.7637 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0004555/0.8383, allocations: 295.1 kB / 1.006 GB, free: 9.438 MB / 0.7637 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0004511/0.8387, allocations: 211.6 kB / 1.007 GB, free: 9.23 MB / 0.7637 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 6.172e-06/0.8387, allocations: 3.984 kB / 1.007 GB, free: 9.227 MB / 0.7637 GB Notification: Performance of matching and sorting (n=55) (initialization): time 0.001773/0.8405, allocations: 0.7204 MB / 1.007 GB, free: 8.492 MB / 0.7637 GB Notification: Performance of prepare postOptimizeDAE: time 0.0001549/0.8407, allocations: 193.3 kB / 1.008 GB, free: 8.258 MB / 0.7637 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.072e-05/0.8407, allocations: 4 kB / 1.008 GB, free: 8.254 MB / 0.7637 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0009961/0.8417, allocations: 273.5 kB / 1.008 GB, free: 7.98 MB / 0.7637 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0002955/0.842, allocations: 75.84 kB / 1.008 GB, free: 7.906 MB / 0.7637 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.006509/0.8485, allocations: 4.323 MB / 1.012 GB, free: 3.316 MB / 0.7637 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001339/0.8499, allocations: 79.97 kB / 1.012 GB, free: 3.238 MB / 0.7637 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 8.145e-05/0.85, allocations: 20 kB / 1.012 GB, free: 3.219 MB / 0.7637 GB Notification: Performance of prepare postOptimizeDAE: time 1.286e-05/0.85, allocations: 4 kB / 1.012 GB, free: 3.215 MB / 0.7637 GB Notification: Performance of postOpt replaceHomotopyWithSimplified (initialization): time 0.001779/0.8518, allocations: 0.6531 MB / 1.013 GB, free: 2.555 MB / 0.7637 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.021e-05/0.8519, allocations: 4 kB / 1.013 GB, free: 2.551 MB / 0.7637 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0009235/0.8528, allocations: 281.9 kB / 1.013 GB, free: 2.27 MB / 0.7637 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0002724/0.8531, allocations: 71.84 kB / 1.013 GB, free: 2.199 MB / 0.7637 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.006194/0.8593, allocations: 4.331 MB / 1.017 GB, free: 13.6 MB / 0.7794 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001116/0.8604, allocations: 79.86 kB / 1.017 GB, free: 13.52 MB / 0.7794 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 5.911e-05/0.8605, allocations: 19.98 kB / 1.017 GB, free: 13.5 MB / 0.7794 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 14 * 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 (39): * Single equations (assignments): 37 * 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: 2 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems: 0 * Non-linear torn systems: 2 {2 8,2 6} Notification: Performance of prepare postOptimizeDAE: time 0.0004409/0.8609, allocations: 288.9 kB / 1.018 GB, free: 13.21 MB / 0.7794 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0001915/0.8611, allocations: 63.23 kB / 1.018 GB, free: 13.15 MB / 0.7794 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.001752/0.8629, allocations: 0.674 MB / 1.018 GB, free: 12.46 MB / 0.7794 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 7.113e-06/0.8629, allocations: 4 kB / 1.018 GB, free: 12.46 MB / 0.7794 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 2.345e-06/0.8629, allocations: 4 kB / 1.018 GB, free: 12.46 MB / 0.7794 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.001551/0.8645, allocations: 0.7454 MB / 1.019 GB, free: 11.66 MB / 0.7794 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.003301/0.8678, allocations: 1.686 MB / 1.021 GB, free: 9.902 MB / 0.7794 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 5.31e-06/0.8678, allocations: 4.188 kB / 1.021 GB, free: 9.898 MB / 0.7794 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0002341/0.8681, allocations: 56 kB / 1.021 GB, free: 9.844 MB / 0.7794 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0009192/0.869, allocations: 257.4 kB / 1.021 GB, free: 9.586 MB / 0.7794 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 4.22e-05/0.8691, allocations: 11.98 kB / 1.021 GB, free: 9.574 MB / 0.7794 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.005469/0.8745, allocations: 3.955 MB / 1.025 GB, free: 5.352 MB / 0.7794 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 2.354e-06/0.8746, allocations: 0 / 1.025 GB, free: 5.352 MB / 0.7794 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.002238/0.8768, allocations: 0.9424 MB / 1.026 GB, free: 4.383 MB / 0.7794 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0004927/0.8773, allocations: 192.3 kB / 1.026 GB, free: 4.176 MB / 0.7794 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001547/0.8775, allocations: 12.22 kB / 1.026 GB, free: 4.164 MB / 0.7794 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.001058/0.8786, allocations: 71.98 kB / 1.026 GB, free: 4.094 MB / 0.7794 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001223/0.8787, allocations: 35.95 kB / 1.026 GB, free: 4.059 MB / 0.7794 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 4.34e-05/0.8787, allocations: 15.98 kB / 1.026 GB, free: 4.043 MB / 0.7794 GB Notification: Performance of sorting global known variables: time 0.0007225/0.8795, allocations: 366.8 kB / 1.027 GB, free: 3.688 MB / 0.7794 GB Notification: Performance of sort global known variables: time 3.046e-06/0.8795, allocations: 0 / 1.027 GB, free: 3.688 MB / 0.7794 GB Notification: Performance of remove unused functions: time 0.001877/0.8814, allocations: 423.8 kB / 1.027 GB, free: 3.273 MB / 0.7794 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 2 * Number of states: 2 (vol.ports[1].h_outflow,vol1.ports[1].h_outflow) * 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 (28): * Single equations (assignments): 26 * 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: 2 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems: 0 * Non-linear torn systems: 2 {2 6,2 4} Notification: Performance of Backend phase and start with SimCode phase: time 0.0007369/0.8821, allocations: 275 kB / 1.027 GB, free: 3.004 MB / 0.7794 GB Notification: Performance of simCode: created initialization part: time 0.003177/0.8853, allocations: 1.35 MB / 1.029 GB, free: 1.602 MB / 0.7794 GB Notification: Performance of simCode: created event and clocks part: time 3.166e-06/0.8853, allocations: 0 / 1.029 GB, free: 1.602 MB / 0.7794 GB Notification: Performance of simCode: created simulation system equations: time 0.001263/0.8866, allocations: 0.548 MB / 1.029 GB, free: 1.027 MB / 0.7794 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.001783/0.8884, allocations: 354.9 kB / 1.029 GB, free: 0.6914 MB / 0.7794 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.002582/0.891, allocations: 1.517 MB / 1.031 GB, free: 15.14 MB / 0.795 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0005713/0.8916, allocations: 0.9224 MB / 1.032 GB, free: 14.19 MB / 0.795 GB Notification: Performance of simCode: alias equations: time 0.0006912/0.8923, allocations: 132 kB / 1.032 GB, free: 14.06 MB / 0.795 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0001436/0.8924, allocations: 47.42 kB / 1.032 GB, free: 14.02 MB / 0.795 GB Notification: Performance of SimCode: time 6.81e-07/0.8924, allocations: 0 / 1.032 GB, free: 14.02 MB / 0.795 GB Notification: Performance of Templates: time 0.03031/0.9227, allocations: 16.99 MB / 1.049 GB, free: 13.25 MB / 0.8106 GB make -j1 -f Buildings_9_Buildings.Fluid.MixingVolumes.Validation.CoupledVolumesSpecializedWaterTemperatureDependentDensity.makefile (rm -f Buildings_9_Buildings.Fluid.MixingVolumes.Validation.CoupledVolumesSpecializedWaterTemperatureDependentDensity.pipe ; mkfifo Buildings_9_Buildings.Fluid.MixingVolumes.Validation.CoupledVolumesSpecializedWaterTemperatureDependentDensity.pipe ; head -c 1048576 < Buildings_9_Buildings.Fluid.MixingVolumes.Validation.CoupledVolumesSpecializedWaterTemperatureDependentDensity.pipe >> ../files/Buildings_9_Buildings.Fluid.MixingVolumes.Validation.CoupledVolumesSpecializedWaterTemperatureDependentDensity.sim & ./Buildings_9_Buildings.Fluid.MixingVolumes.Validation.CoupledVolumesSpecializedWaterTemperatureDependentDensity -abortSlowSimulation -alarm=480 -emit_protected -lv LOG_STATS > Buildings_9_Buildings.Fluid.MixingVolumes.Validation.CoupledVolumesSpecializedWaterTemperatureDependentDensity.pipe 2>&1) diffSimulationResults("Buildings_9_Buildings.Fluid.MixingVolumes.Validation.CoupledVolumesSpecializedWaterTemperatureDependentDensity_res.mat","/mnt/ReferenceFiles/Buildings/csv/maint_9.1.x/Buildings_Fluid_MixingVolumes_Validation_CoupledVolumesSpecializedWaterTemperatureDependentDensity.csv","/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/files/Buildings_9_Buildings.Fluid.MixingVolumes.Validation.CoupledVolumesSpecializedWaterTemperatureDependentDensity.diff",relTol=0.003,relTolDiffMinMax=0.003,rangeDelta=0.001) Reference file matches