Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_10_Buildings.Fluid.Examples.Performance.PressureDrop.SeriesDpOptimised.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 10.1.1-maint.10.0.x/package.mo", uses=false) Using package Buildings with version 10.1.1 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 10.1.1-maint.10.0.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.SeriesDpOptimised,tolerance=1e-06,outputFormat="mat",numberOfIntervals=5000,variableFilter="time|sin.ports.1..m_flow",fileNamePrefix="Buildings_10_Buildings.Fluid.Examples.Performance.PressureDrop.SeriesDpOptimised") translateModel(Buildings.Fluid.Examples.Performance.PressureDrop.SeriesDpOptimised,tolerance=1e-06,outputFormat="mat",numberOfIntervals=5000,variableFilter="time|sin.ports.1..m_flow",fileNamePrefix="Buildings_10_Buildings.Fluid.Examples.Performance.PressureDrop.SeriesDpOptimised") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001609/0.001609, allocations: 104 kB / 16.27 MB, free: 6.418 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001595/0.001595, allocations: 190.1 kB / 17.2 MB, free: 5.949 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.406/1.406, allocations: 222.9 MB / 240.9 MB, free: 15.26 MB / 206.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 10.1.1-maint.10.0.x/package.mo): time 2.511/2.511, allocations: 437.1 MB / 0.711 GB, free: 4.539 MB / 0.5762 GB Notification: Performance of FrontEnd - loaded program: time 0.001939/0.001939, allocations: 63.95 kB / 0.8699 GB, free: 2.211 MB / 0.6387 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.34/0.3419, allocations: 151.6 MB / 1.018 GB, free: 10.65 MB / 0.795 GB Notification: Performance of NFInst.instantiate(Buildings.Fluid.Examples.Performance.PressureDrop.SeriesDpOptimised): time 0.7189/1.061, allocations: 161.6 MB / 1.176 GB, free: 12.32 MB / 0.8887 GB Notification: Performance of NFInst.instExpressions: time 0.005776/1.067, allocations: 3.634 MB / 1.179 GB, free: 9.668 MB / 0.8887 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.000455/1.067, allocations: 14.91 kB / 1.179 GB, free: 9.66 MB / 0.8887 GB Notification: Performance of NFTyping.typeComponents: time 0.0006445/1.068, allocations: 160.1 kB / 1.18 GB, free: 9.527 MB / 0.8887 GB Notification: Performance of NFTyping.typeBindings: time 0.001496/1.069, allocations: 0.5303 MB / 1.18 GB, free: 9.125 MB / 0.8887 GB Notification: Performance of NFTyping.typeClassSections: time 0.001358/1.071, allocations: 426.1 kB / 1.18 GB, free: 8.832 MB / 0.8887 GB Notification: Performance of NFFlatten.flatten: time 0.002943/1.074, allocations: 2.536 MB / 1.183 GB, free: 7.438 MB / 0.8887 GB Notification: Performance of NFFlatten.resolveConnections: time 0.001394/1.075, allocations: 0.9347 MB / 1.184 GB, free: 6.918 MB / 0.8887 GB Notification: Performance of NFEvalConstants.evaluate: time 0.002159/1.077, allocations: 1.031 MB / 1.185 GB, free: 6.387 MB / 0.8887 GB Notification: Performance of NFSimplifyModel.simplify: time 0.001401/1.079, allocations: 0.7054 MB / 1.186 GB, free: 5.984 MB / 0.8887 GB Notification: Performance of NFPackage.collectConstants: time 0.0001694/1.079, allocations: 55.25 kB / 1.186 GB, free: 5.984 MB / 0.8887 GB Notification: Performance of NFFlatten.collectFunctions: time 0.001852/1.081, allocations: 0.7375 MB / 1.186 GB, free: 5.59 MB / 0.8887 GB Notification: Performance of NFScalarize.scalarize: time 0.0004332/1.081, allocations: 309.4 kB / 1.187 GB, free: 5.383 MB / 0.8887 GB Notification: Performance of NFVerifyModel.verify: time 0.0008502/1.082, allocations: 0.5415 MB / 1.187 GB, free: 5.055 MB / 0.8887 GB Notification: Performance of NFConvertDAE.convert: time 0.001818/1.084, allocations: 1.385 MB / 1.188 GB, free: 4.223 MB / 0.8887 GB Notification: Performance of FrontEnd - DAE generated: time 4.488e-06/1.084, allocations: 3.188 kB / 1.188 GB, free: 4.223 MB / 0.8887 GB Notification: Performance of FrontEnd: time 1.723e-06/1.084, allocations: 0 / 1.188 GB, free: 4.223 MB / 0.8887 GB Notification: Performance of Transformations before backend: time 1.327e-05/1.084, allocations: 0 / 1.188 GB, free: 4.223 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: 125 * Number of variables: 125 Notification: Performance of Generate backend data structure: time 0.002291/1.086, allocations: 1.446 MB / 1.19 GB, free: 3.109 MB / 0.8887 GB Notification: Performance of prepare preOptimizeDAE: time 3.593e-05/1.086, allocations: 12.8 kB / 1.19 GB, free: 3.105 MB / 0.8887 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0007567/1.087, allocations: 183.4 kB / 1.19 GB, free: 3.02 MB / 0.8887 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.00119/1.088, allocations: 0.8051 MB / 1.191 GB, free: 2.418 MB / 0.8887 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 4.469e-05/1.088, allocations: 43 kB / 1.191 GB, free: 2.402 MB / 0.8887 GB Notification: Performance of preOpt expandDerOperator (simulation): time 8.982e-05/1.088, allocations: 61.89 kB / 1.191 GB, free: 2.383 MB / 0.8887 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.001157/1.09, allocations: 0.7885 MB / 1.192 GB, free: 1.812 MB / 0.8887 GB Notification: Performance of preOpt findStateOrder (simulation): time 1.825e-05/1.09, allocations: 10.66 kB / 1.192 GB, free: 1.805 MB / 0.8887 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 5.318e-05/1.09, allocations: 20.91 kB / 1.192 GB, free: 1.789 MB / 0.8887 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 1.179e-05/1.09, allocations: 14.97 kB / 1.192 GB, free: 1.789 MB / 0.8887 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0008746/1.091, allocations: 0.5356 MB / 1.192 GB, free: 1.531 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 0.004407/1.095, allocations: 4.603 MB / 1.197 GB, free: 13.21 MB / 0.9044 GB Notification: Performance of preOpt comSubExp (simulation): time 0.0007172/1.096, allocations: 426 kB / 1.197 GB, free: 13 MB / 0.9044 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0003681/1.096, allocations: 242.9 kB / 1.197 GB, free: 12.89 MB / 0.9044 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0003159/1.096, allocations: 197.5 kB / 1.198 GB, free: 12.68 MB / 0.9044 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.0005004/1.097, allocations: 299.5 kB / 1.198 GB, free: 12.49 MB / 0.9044 GB Notification: Performance of pre-optimization done (n=31): time 1.763e-06/1.097, allocations: 0 / 1.198 GB, free: 12.49 MB / 0.9044 GB Notification: Performance of matching and sorting (n=31): time 0.004032/1.101, allocations: 1.319 MB / 1.199 GB, free: 11.75 MB / 0.9044 GB Notification: Performance of inlineWhenForInitialization (initialization): time 5.697e-05/1.101, allocations: 79.67 kB / 1.199 GB, free: 11.66 MB / 0.9044 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.00139/1.102, allocations: 1.121 MB / 1.2 GB, free: 11.06 MB / 0.9044 GB Notification: Performance of collectPreVariables (initialization): time 6.594e-05/1.103, allocations: 39.36 kB / 1.2 GB, free: 11.02 MB / 0.9044 GB Notification: Performance of collectInitialEqns (initialization): time 0.0004533/1.103, allocations: 494.2 kB / 1.201 GB, free: 10.6 MB / 0.9044 GB Notification: Performance of collectInitialBindings (initialization): time 0.0001006/1.103, allocations: 105.6 kB / 1.201 GB, free: 10.51 MB / 0.9044 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0001683/1.103, allocations: 118.8 kB / 1.201 GB, free: 10.44 MB / 0.9044 GB Notification: Performance of setup shared object (initialization): time 0.0001399/1.103, allocations: 323 kB / 1.201 GB, free: 10.12 MB / 0.9044 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.00037/1.104, allocations: 214 kB / 1.202 GB, free: 10.02 MB / 0.9044 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0006382/1.104, allocations: 0.5179 MB / 1.202 GB, free: 9.523 MB / 0.9044 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.000882/1.105, allocations: 0.6288 MB / 1.203 GB, free: 9.055 MB / 0.9044 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 4.348e-06/1.105, allocations: 2.406 kB / 1.203 GB, free: 9.055 MB / 0.9044 GB Notification: Performance of matching and sorting (n=54) (initialization): time 0.002333/1.108, allocations: 1.049 MB / 1.204 GB, free: 8.473 MB / 0.9044 GB Notification: Performance of prepare postOptimizeDAE: time 4.094e-05/1.108, allocations: 32.98 kB / 1.204 GB, free: 8.441 MB / 0.9044 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 9.769e-06/1.108, allocations: 4.906 kB / 1.204 GB, free: 8.441 MB / 0.9044 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.001382/1.109, allocations: 363.9 kB / 1.204 GB, free: 8.27 MB / 0.9044 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.000221/1.109, allocations: 61.66 kB / 1.204 GB, free: 8.254 MB / 0.9044 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.001063/1.11, allocations: 1.015 MB / 1.205 GB, free: 7.473 MB / 0.9044 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0007733/1.111, allocations: 77.36 kB / 1.205 GB, free: 7.426 MB / 0.9044 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 5.291e-05/1.111, allocations: 28.45 kB / 1.205 GB, free: 7.418 MB / 0.9044 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.0007391/1.112, allocations: 0.4926 MB / 1.206 GB, free: 7.129 MB / 0.9044 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.000577/1.113, allocations: 494.5 kB / 1.206 GB, free: 6.652 MB / 0.9044 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.0007761/1.113, allocations: 0.5511 MB / 1.207 GB, free: 6.223 MB / 0.9044 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 3.727e-06/1.113, allocations: 2.625 kB / 1.207 GB, free: 6.223 MB / 0.9044 GB Notification: Performance of matching and sorting (n=54) (initialization_lambda0): time 0.001569/1.115, allocations: 0.8348 MB / 1.208 GB, free: 5.758 MB / 0.9044 GB Notification: Performance of prepare postOptimizeDAE: time 4.445e-05/1.115, allocations: 35.98 kB / 1.208 GB, free: 5.727 MB / 0.9044 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 8.777e-06/1.115, allocations: 5.344 kB / 1.208 GB, free: 5.727 MB / 0.9044 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0005593/1.116, allocations: 213.9 kB / 1.208 GB, free: 5.625 MB / 0.9044 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0002117/1.116, allocations: 56.66 kB / 1.208 GB, free: 5.613 MB / 0.9044 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.004315/1.12, allocations: 3.347 MB / 1.211 GB, free: 2.398 MB / 0.9044 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.000911/1.121, allocations: 76.02 kB / 1.211 GB, free: 2.324 MB / 0.9044 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 4.534e-05/1.121, allocations: 24 kB / 1.211 GB, free: 2.301 MB / 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_p.count,$PRE.pulse_p.count,pulse_p.T_start,$PRE.pulse_p.T_start,$whenCondition1) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (34): * Single equations (assignments): 32 * 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 0.0002695/1.121, allocations: 212.1 kB / 1.211 GB, free: 2.086 MB / 0.9044 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0001758/1.122, allocations: 98.78 kB / 1.212 GB, free: 1.988 MB / 0.9044 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.001469/1.123, allocations: 0.718 MB / 1.212 GB, free: 1.262 MB / 0.9044 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 4.518e-06/1.123, allocations: 4 kB / 1.212 GB, free: 1.258 MB / 0.9044 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 4.648e-06/1.123, allocations: 4 kB / 1.212 GB, free: 1.254 MB / 0.9044 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 5.16e-06/1.123, allocations: 0 / 1.212 GB, free: 1.254 MB / 0.9044 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.002711/1.126, allocations: 1.607 MB / 1.214 GB, free: 15.56 MB / 0.92 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 7.223e-06/1.126, allocations: 4 kB / 1.214 GB, free: 15.56 MB / 0.92 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.000123/1.126, allocations: 27.86 kB / 1.214 GB, free: 15.53 MB / 0.92 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0005021/1.127, allocations: 222 kB / 1.214 GB, free: 15.31 MB / 0.92 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 2.678e-05/1.127, allocations: 12 kB / 1.214 GB, free: 15.3 MB / 0.92 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.001053/1.128, allocations: 0.9738 MB / 1.215 GB, free: 14.3 MB / 0.92 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 5.42e-06/1.128, allocations: 4.031 kB / 1.215 GB, free: 14.3 MB / 0.92 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.00144/1.129, allocations: 0.8331 MB / 1.216 GB, free: 13.43 MB / 0.92 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0005018/1.13, allocations: 219.7 kB / 1.216 GB, free: 13.19 MB / 0.92 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0002411/1.13, allocations: 8 kB / 1.216 GB, free: 13.18 MB / 0.92 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0005516/1.13, allocations: 31.91 kB / 1.216 GB, free: 13.15 MB / 0.92 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 9.576e-05/1.131, allocations: 23.97 kB / 1.216 GB, free: 13.13 MB / 0.92 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 2.966e-05/1.131, allocations: 12 kB / 1.216 GB, free: 13.12 MB / 0.92 GB Notification: Performance of sorting global known variables: time 0.001436/1.132, allocations: 0.7955 MB / 1.217 GB, free: 12.31 MB / 0.92 GB Notification: Performance of sort global known variables: time 2.144e-06/1.132, allocations: 0 / 1.217 GB, free: 12.31 MB / 0.92 GB Notification: Performance of remove unused functions: time 0.001746/1.134, allocations: 431.5 kB / 1.217 GB, free: 11.89 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_p.T_start,pulse_p.count) * Number of discrete states: 1 (pulse_p.count) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (12): * Single equations (assignments): 9 * 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 {(1,19)} Notification: Performance of Backend phase and start with SimCode phase: time 0.0006025/1.134, allocations: 189.5 kB / 1.218 GB, free: 11.71 MB / 0.92 GB Notification: Performance of simCode: created initialization part: time 0.0024/1.137, allocations: 1.074 MB / 1.219 GB, free: 10.6 MB / 0.92 GB Notification: Performance of simCode: created event and clocks part: time 5.269e-06/1.137, allocations: 4.062 kB / 1.219 GB, free: 10.59 MB / 0.92 GB Notification: Performance of simCode: created simulation system equations: time 0.0005208/1.137, allocations: 222.6 kB / 1.219 GB, free: 10.38 MB / 0.92 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.00255/1.14, allocations: 454.3 kB / 1.219 GB, free: 9.934 MB / 0.92 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.00375/1.144, allocations: 1.83 MB / 1.221 GB, free: 8.043 MB / 0.92 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0009868/1.145, allocations: 1.184 MB / 1.222 GB, free: 6.828 MB / 0.92 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0001864/1.145, allocations: 67.42 kB / 1.222 GB, free: 6.762 MB / 0.92 GB Notification: Performance of SimCode: time 8.71e-07/1.145, allocations: 0 / 1.222 GB, free: 6.762 MB / 0.92 GB Notification: Performance of Templates: time 0.035/1.18, allocations: 20.32 MB / 1.242 GB, free: 2.531 MB / 0.9356 GB make -j1 -f Buildings_10_Buildings.Fluid.Examples.Performance.PressureDrop.SeriesDpOptimised.makefile (rm -f Buildings_10_Buildings.Fluid.Examples.Performance.PressureDrop.SeriesDpOptimised.pipe ; mkfifo Buildings_10_Buildings.Fluid.Examples.Performance.PressureDrop.SeriesDpOptimised.pipe ; head -c 1048576 < Buildings_10_Buildings.Fluid.Examples.Performance.PressureDrop.SeriesDpOptimised.pipe >> ../files/Buildings_10_Buildings.Fluid.Examples.Performance.PressureDrop.SeriesDpOptimised.sim & ./Buildings_10_Buildings.Fluid.Examples.Performance.PressureDrop.SeriesDpOptimised -abortSlowSimulation -alarm=400 -emit_protected -lv LOG_STATS > Buildings_10_Buildings.Fluid.Examples.Performance.PressureDrop.SeriesDpOptimised.pipe 2>&1) diffSimulationResults("Buildings_10_Buildings.Fluid.Examples.Performance.PressureDrop.SeriesDpOptimised_res.mat","/mnt/ReferenceFiles/Buildings/csv/maint_10.0.x/Buildings_Fluid_Examples_Performance_PressureDrop_SeriesDpOptimised.csv","/var/lib/jenkins1/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/files/Buildings_10_Buildings.Fluid.Examples.Performance.PressureDrop.SeriesDpOptimised.diff",relTol=0.003,relTolDiffMinMax=0.003,rangeDelta=0.001) Reference file matches