Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_latest_Buildings.Fluid.Chillers.Examples.Carnot_y.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 12.0.0-master/package.mo", uses=false) Using package Buildings with version 12.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 12.0.0-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: "" <> buildModelFMU(Buildings.Fluid.Chillers.Examples.Carnot_y,fileNamePrefix="Buildings_latest_Buildings_Fluid_Chillers_Examples_Carnot_y",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(Buildings.Fluid.Chillers.Examples.Carnot_y,fileNamePrefix="Buildings_latest_Buildings_Fluid_Chillers_Examples_Carnot_y",fmuType="me",version="2.0",platforms={"static"}) Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001942/0.001942, allocations: 112.5 kB / 15.73 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 0.002186/0.002186, allocations: 189.9 kB / 16.67 MB, free: 6.582 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.422/1.422, allocations: 222.9 MB / 240.4 MB, free: 4.336 MB / 190.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 12.0.0-master/package.mo): time 2.942/2.942, allocations: 482.4 MB / 0.7548 GB, free: 10.88 MB / 0.6075 GB Notification: Performance of FrontEnd - loaded program: time 0.003343/0.003343, allocations: 63.89 kB / 1.083 GB, free: 12.54 MB / 0.8419 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.3005/0.3039, allocations: 162.2 MB / 1.241 GB, free: 10.2 MB / 0.9981 GB Notification: Performance of NFInst.instantiate(Buildings.Fluid.Chillers.Examples.Carnot_y): time 0.5789/0.8829, allocations: 75.3 MB / 1.315 GB, free: 13.9 MB / 1.045 GB Notification: Performance of NFInst.instExpressions: time 0.01904/0.902, allocations: 12.77 MB / 1.327 GB, free: 4.703 MB / 1.045 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.001952/0.9039, allocations: 69.81 kB / 1.328 GB, free: 4.676 MB / 1.045 GB Notification: Performance of NFTyping.typeComponents: time 0.001993/0.906, allocations: 0.829 MB / 1.328 GB, free: 4.156 MB / 1.045 GB Notification: Performance of NFTyping.typeBindings: time 0.006077/0.9121, allocations: 2.456 MB / 1.331 GB, free: 2.672 MB / 1.045 GB Notification: Performance of NFTyping.typeClassSections: time 0.003364/0.9154, allocations: 1.392 MB / 1.332 GB, free: 1.875 MB / 1.045 GB Notification: Performance of NFFlatten.flatten: time 0.005502/0.9209, allocations: 4.401 MB / 1.336 GB, free: 15.66 MB / 1.061 GB Notification: Performance of NFFlatten.resolveConnections: time 0.001934/0.9229, allocations: 1.427 MB / 1.338 GB, free: 14.97 MB / 1.061 GB Notification: Performance of NFEvalConstants.evaluate: time 0.003869/0.9268, allocations: 1.817 MB / 1.34 GB, free: 14.06 MB / 1.061 GB Notification: Performance of NFSimplifyModel.simplify: time 0.001639/0.9284, allocations: 1.182 MB / 1.341 GB, free: 13.5 MB / 1.061 GB Notification: Performance of NFPackage.collectConstants: time 0.0002359/0.9287, allocations: 162.7 kB / 1.341 GB, free: 13.5 MB / 1.061 GB Notification: Performance of NFFlatten.collectFunctions: time 0.003063/0.9317, allocations: 1.398 MB / 1.342 GB, free: 12.99 MB / 1.061 GB Notification: Performance of NFScalarize.scalarize: time 0.0004436/0.9322, allocations: 400.7 kB / 1.343 GB, free: 12.74 MB / 1.061 GB Notification: Performance of NFVerifyModel.verify: time 0.001006/0.9332, allocations: 0.9019 MB / 1.343 GB, free: 12.17 MB / 1.061 GB Notification: Performance of NFConvertDAE.convert: time 0.00401/0.9372, allocations: 2.871 MB / 1.346 GB, free: 11.08 MB / 1.061 GB Notification: Performance of FrontEnd - DAE generated: time 3.947e-06/0.9373, allocations: 0.7031 kB / 1.346 GB, free: 11.08 MB / 1.061 GB Notification: Performance of FrontEnd: time 1.193e-06/0.9373, allocations: 1.062 kB / 1.346 GB, free: 11.08 MB / 1.061 GB Notification: Performance of Transformations before backend: time 2.518e-05/0.9373, allocations: 4 kB / 1.346 GB, free: 11.07 MB / 1.061 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 240 * Number of variables: 240 Notification: Performance of Generate backend data structure: time 0.003969/0.9413, allocations: 2.139 MB / 1.348 GB, free: 9.641 MB / 1.061 GB Notification: Performance of prepare preOptimizeDAE: time 3.482e-05/0.9413, allocations: 9.656 kB / 1.348 GB, free: 9.641 MB / 1.061 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.0002036/0.9415, allocations: 146.8 kB / 1.349 GB, free: 9.543 MB / 1.061 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0008579/0.9424, allocations: 236.5 kB / 1.349 GB, free: 9.449 MB / 1.061 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.002653/0.9451, allocations: 1.537 MB / 1.35 GB, free: 8.523 MB / 1.061 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 7.026e-05/0.9451, allocations: 80.52 kB / 1.35 GB, free: 8.484 MB / 1.061 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001519/0.9453, allocations: 101.4 kB / 1.35 GB, free: 8.453 MB / 1.061 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.002082/0.9474, allocations: 1.1 MB / 1.351 GB, free: 7.965 MB / 1.061 GB Notification: Performance of preOpt findStateOrder (simulation): time 2.759e-05/0.9474, allocations: 0 / 1.351 GB, free: 7.965 MB / 1.061 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0001027/0.9475, allocations: 42.25 kB / 1.352 GB, free: 7.934 MB / 1.061 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 3.286e-05/0.9476, allocations: 27.78 kB / 1.352 GB, free: 7.93 MB / 1.061 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.001983/0.9496, allocations: 0.8794 MB / 1.352 GB, free: 7.625 MB / 1.061 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 0.006175/0.9558, allocations: 4.931 MB / 1.357 GB, free: 3.727 MB / 1.061 GB Notification: Performance of preOpt comSubExp (simulation): time 0.001453/0.9572, allocations: 0.6224 MB / 1.358 GB, free: 3.426 MB / 1.061 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0007616/0.958, allocations: 349.9 kB / 1.358 GB, free: 3.258 MB / 1.061 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0007183/0.9587, allocations: 0.8314 MB / 1.359 GB, free: 2.285 MB / 1.061 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 4.011e-05/0.9588, allocations: 43.56 kB / 1.359 GB, free: 2.238 MB / 1.061 GB Notification: Performance of pre-optimization done (n=61): time 1.894e-06/0.9588, allocations: 0 / 1.359 GB, free: 2.238 MB / 1.061 GB Notification: Performance of matching and sorting (n=61): time 0.007744/0.9665, allocations: 1.679 MB / 1.361 GB, free: 1.352 MB / 1.061 GB Notification: Performance of inlineWhenForInitialization (initialization): time 3.94e-05/0.9666, allocations: 61.88 kB / 1.361 GB, free: 1.285 MB / 1.061 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.001657/0.9682, allocations: 1.228 MB / 1.362 GB, free: 0.6016 MB / 1.061 GB Notification: Performance of collectPreVariables (initialization): time 7.04e-05/0.9683, allocations: 42.89 kB / 1.362 GB, free: 0.5586 MB / 1.061 GB Notification: Performance of collectInitialEqns (initialization): time 0.0005805/0.9689, allocations: 0.6169 MB / 1.363 GB, free: 12 kB / 1.061 GB Notification: Performance of collectInitialBindings (initialization): time 0.0002346/0.9692, allocations: 223.6 kB / 1.363 GB, free: 15.81 MB / 1.076 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0002696/0.9694, allocations: 155.8 kB / 1.363 GB, free: 15.72 MB / 1.076 GB Notification: Performance of setup shared object (initialization): time 0.000233/0.9697, allocations: 332.6 kB / 1.363 GB, free: 15.39 MB / 1.076 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0007611/0.9705, allocations: 291.3 kB / 1.364 GB, free: 15.25 MB / 1.076 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0009297/0.9714, allocations: 495.3 kB / 1.364 GB, free: 14.86 MB / 1.076 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.001555/0.973, allocations: 0.7089 MB / 1.365 GB, free: 14.41 MB / 1.076 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 3.617e-06/0.973, allocations: 5.094 kB / 1.365 GB, free: 14.41 MB / 1.076 GB Notification: Performance of matching and sorting (n=88) (initialization): time 0.005063/0.9781, allocations: 1.276 MB / 1.366 GB, free: 13.77 MB / 1.076 GB Notification: Performance of prepare postOptimizeDAE: time 1.635e-05/0.9781, allocations: 7.156 kB / 1.366 GB, free: 13.77 MB / 1.076 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 8.496e-06/0.9781, allocations: 4.188 kB / 1.366 GB, free: 13.77 MB / 1.076 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0006047/0.9787, allocations: 144.5 kB / 1.366 GB, free: 13.69 MB / 1.076 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.00064/0.9794, allocations: 159.2 kB / 1.366 GB, free: 13.65 MB / 1.076 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.0009102/0.9803, allocations: 0.6817 MB / 1.367 GB, free: 13.05 MB / 1.076 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0009798/0.9813, allocations: 133.6 kB / 1.367 GB, free: 12.96 MB / 1.076 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 7.206e-05/0.9814, allocations: 30.39 kB / 1.367 GB, free: 12.95 MB / 1.076 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.001088/0.9824, allocations: 0.5545 MB / 1.368 GB, free: 12.61 MB / 1.076 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.0009134/0.9834, allocations: 489.9 kB / 1.368 GB, free: 12.23 MB / 1.076 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.001545/0.9849, allocations: 0.7097 MB / 1.369 GB, free: 11.78 MB / 1.076 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 2.895e-06/0.9849, allocations: 1.219 kB / 1.369 GB, free: 11.78 MB / 1.076 GB Notification: Performance of matching and sorting (n=88) (initialization_lambda0): time 0.00498/0.9899, allocations: 1.271 MB / 1.37 GB, free: 11.14 MB / 1.076 GB Notification: Performance of prepare postOptimizeDAE: time 9.819e-06/0.99, allocations: 6.594 kB / 1.37 GB, free: 11.14 MB / 1.076 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 4.92e-06/0.99, allocations: 2.844 kB / 1.37 GB, free: 11.14 MB / 1.076 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0005123/0.9905, allocations: 141.8 kB / 1.37 GB, free: 11.07 MB / 1.076 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0006056/0.9911, allocations: 158.2 kB / 1.37 GB, free: 11.03 MB / 1.076 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.000884/0.992, allocations: 0.6977 MB / 1.371 GB, free: 10.41 MB / 1.076 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0009515/0.993, allocations: 98.64 kB / 1.371 GB, free: 10.35 MB / 1.076 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 6.482e-05/0.993, allocations: 31.27 kB / 1.371 GB, free: 10.34 MB / 1.076 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 16 * 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 (79): * Single equations (assignments): 78 * Array equations: 0 * Algorithm blocks: 0 * 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 {(1,9)} Notification: Performance of prepare postOptimizeDAE: time 0.0002264/0.9933, allocations: 242.1 kB / 1.371 GB, free: 10.11 MB / 1.076 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0002332/0.9935, allocations: 139.7 kB / 1.371 GB, free: 10.04 MB / 1.076 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.005021/0.9985, allocations: 1.257 MB / 1.373 GB, free: 9.352 MB / 1.076 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.425e-05/0.9986, allocations: 6.844 kB / 1.373 GB, free: 9.352 MB / 1.076 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 5.12e-06/0.9986, allocations: 1.344 kB / 1.373 GB, free: 9.352 MB / 1.076 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.004521/1.003, allocations: 1.1 MB / 1.374 GB, free: 8.723 MB / 1.076 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.006758/1.01, allocations: 2.621 MB / 1.376 GB, free: 6.91 MB / 1.076 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 8.295e-06/1.01, allocations: 7.344 kB / 1.376 GB, free: 6.906 MB / 1.076 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0004849/1.01, allocations: 114.6 kB / 1.376 GB, free: 6.875 MB / 1.076 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0005068/1.011, allocations: 132.9 kB / 1.377 GB, free: 6.809 MB / 1.076 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 5.484e-05/1.011, allocations: 25.08 kB / 1.377 GB, free: 6.793 MB / 1.076 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.005493/1.016, allocations: 2.577 MB / 1.379 GB, free: 4.598 MB / 1.076 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 9.107e-06/1.016, allocations: 10.84 kB / 1.379 GB, free: 4.59 MB / 1.076 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.005702/1.022, allocations: 1.7 MB / 1.381 GB, free: 3.574 MB / 1.076 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0004754/1.023, allocations: 311.6 kB / 1.381 GB, free: 3.305 MB / 1.076 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001841/1.023, allocations: 23.23 kB / 1.381 GB, free: 3.289 MB / 1.076 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0008562/1.024, allocations: 57.44 kB / 1.381 GB, free: 3.258 MB / 1.076 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001227/1.024, allocations: 57.19 kB / 1.381 GB, free: 3.227 MB / 1.076 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 6.571e-05/1.024, allocations: 36.72 kB / 1.381 GB, free: 3.211 MB / 1.076 GB Notification: Performance of sorting global known variables: time 0.001238/1.025, allocations: 0.8817 MB / 1.382 GB, free: 2.719 MB / 1.076 GB Notification: Performance of sort global known variables: time 1.9e-07/1.025, allocations: 4 kB / 1.382 GB, free: 2.715 MB / 1.076 GB Notification: Performance of remove unused functions: time 0.001811/1.027, allocations: 0.7182 MB / 1.383 GB, free: 2.566 MB / 1.076 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 15 * Number of states: 2 (chi.con.vol.dynBal.U,chi.eva.vol.dynBal.U) * 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 (56): * Single equations (assignments): 51 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 4 * 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 {(1,9)} Notification: Performance of Backend phase and start with SimCode phase: time 0.006836/1.034, allocations: 2.594 MB / 1.385 GB, free: 0.8555 MB / 1.076 GB Notification: Performance of simCode: created initialization part: time 0.002655/1.037, allocations: 1.121 MB / 1.386 GB, free: 360 kB / 1.076 GB Notification: Performance of simCode: created event and clocks part: time 4.147e-06/1.037, allocations: 2.938 kB / 1.386 GB, free: 360 kB / 1.076 GB Notification: Performance of simCode: created simulation system equations: time 0.001533/1.038, allocations: 0.5589 MB / 1.387 GB, free: 20 kB / 1.076 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.003532/1.042, allocations: 0.7955 MB / 1.388 GB, free: 15.61 MB / 1.092 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.02137/1.063, allocations: 9.836 MB / 1.397 GB, free: 6.602 MB / 1.092 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0009222/1.064, allocations: 1.176 MB / 1.399 GB, free: 5.398 MB / 1.092 GB Notification: Performance of simCode: alias equations: time 0.00105/1.065, allocations: 306.9 kB / 1.399 GB, free: 5.094 MB / 1.092 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0007519/1.066, allocations: 0.511 MB / 1.399 GB, free: 4.582 MB / 1.092 GB Notification: Performance of SimCode: time 4.01e-07/1.066, allocations: 0 / 1.399 GB, free: 4.582 MB / 1.092 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.08325/1.149, allocations: 42.41 MB / 1.441 GB, free: 10.67 MB / 1.139 GB Notification: Performance of buildModelFMU: Generate platform static: time 13.72/14.87, allocations: 19.09 kB / 1.441 GB, free: 10.65 MB / 1.139 GB (rm -f Buildings_latest_Buildings.Fluid.Chillers.Examples.Carnot_y.pipe ; mkfifo Buildings_latest_Buildings.Fluid.Chillers.Examples.Carnot_y.pipe ; head -c 1048576 < Buildings_latest_Buildings.Fluid.Chillers.Examples.Carnot_y.pipe >> ../files/Buildings_latest_Buildings.Fluid.Chillers.Examples.Carnot_y.sim & python3 -m fmpy simulate --output-file Buildings_latest_Buildings.Fluid.Chillers.Examples.Carnot_y_res.csv --start-time 0 --stop-time 3600 --timeout 400 --relative-tolerance 1e-06 --interface-type ModelExchange --solver CVode --output-interval 1.44 Buildings_latest_Buildings_Fluid_Chillers_Examples_Carnot_y.fmu > Buildings_latest_Buildings.Fluid.Chillers.Examples.Carnot_y.pipe 2>&1) diffSimulationResults("Buildings_latest_Buildings.Fluid.Chillers.Examples.Carnot_y_res.csv","/mnt/ReferenceFiles/Buildings/csv/master/Buildings_Fluid_Chillers_Examples_Carnot_y.csv","/var/lib/jenkins1/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/files/Buildings_latest_Buildings.Fluid.Chillers.Examples.Carnot_y.diff",relTol=0.003,relTolDiffMinMax=0.003,rangeDelta=0.001) Reference file matches