Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_11_Buildings.Fluid.FixedResistances.Examples.CheckValve.conf.json loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo", uses=false) [Timeout 90] Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.002001/0.002001, allocations: 103 kB / 18.19 MB, free: 3.879 MB / 14.72 MB [Timeout remaining time 90] loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo", uses=false) [Timeout 90] Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.002636/0.002636, allocations: 189.9 kB / 21.34 MB, free: 0.7383 MB / 14.72 MB [Timeout remaining time 90] loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo", uses=false) [Timeout 90] Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.484/1.484, allocations: 225.6 MB / 250 MB, free: 3.195 MB / 190.1 MB [Timeout remaining time 88] loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 11.1.0-maint.11.x/package.mo", uses=false) [Timeout 90] Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 11.1.0-maint.11.x/package.mo): time 2.837/2.837, allocations: 476.7 MB / 0.7634 GB, free: 15.25 MB / 0.6075 GB [Timeout remaining time 86] Using package Buildings with version 11.1.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 11.1.0-maint.11.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.FixedResistances.Examples.CheckValve,tolerance=1e-06,outputFormat="mat",numberOfIntervals=502,variableFilter="time|checkValve.dp|checkValve_m_flow.dp|checkValve.m_flow|checkValveDpFix.m_flow|checkValve_m_flow.m_flow|checkValve.k|checkValveDpFix.k|checkValve_m_flow.k",fileNamePrefix="Buildings_11_Buildings.Fluid.FixedResistances.Examples.CheckValve") translateModel(Buildings.Fluid.FixedResistances.Examples.CheckValve,tolerance=1e-06,outputFormat="mat",numberOfIntervals=502,variableFilter="time|checkValve.dp|checkValve_m_flow.dp|checkValve.m_flow|checkValveDpFix.m_flow|checkValve_m_flow.m_flow|checkValve.k|checkValveDpFix.k|checkValve_m_flow.k",fileNamePrefix="Buildings_11_Buildings.Fluid.FixedResistances.Examples.CheckValve") [Timeout 300] Notification: Performance of FrontEnd - loaded program: time 0.00199/0.00199, allocations: 71.89 kB / 1.108 GB, free: 4.742 MB / 0.8419 GB Notification: Performance of FrontEnd - Absyn->SCode: time 1.157/1.159, allocations: 168.7 MB / 1.272 GB, free: 7.926 MB / 0.9981 GB Notification: Performance of NFInst.instantiate(Buildings.Fluid.FixedResistances.Examples.CheckValve): time 0.02286/1.182, allocations: 20.9 MB / 1.293 GB, free: 8.988 MB / 1.014 GB Notification: Performance of NFInst.instExpressions: time 0.008496/1.191, allocations: 4.96 MB / 1.298 GB, free: 5.469 MB / 1.014 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.001009/1.192, allocations: 18 kB / 1.298 GB, free: 5.461 MB / 1.014 GB Notification: Performance of NFTyping.typeComponents: time 0.001056/1.193, allocations: 289.3 kB / 1.298 GB, free: 5.281 MB / 1.014 GB Notification: Performance of NFTyping.typeBindings: time 0.002926/1.196, allocations: 0.8511 MB / 1.299 GB, free: 4.785 MB / 1.014 GB Notification: Performance of NFTyping.typeClassSections: time 0.002454/1.198, allocations: 0.7096 MB / 1.299 GB, free: 4.434 MB / 1.014 GB Notification: Performance of NFFlatten.flatten: time 0.002534/1.201, allocations: 1.392 MB / 1.301 GB, free: 3.801 MB / 1.014 GB Notification: Performance of NFFlatten.resolveConnections: time 0.0007596/1.201, allocations: 385.9 kB / 1.301 GB, free: 3.645 MB / 1.014 GB Notification: Performance of NFEvalConstants.evaluate: time 0.001455/1.203, allocations: 0.5841 MB / 1.302 GB, free: 3.387 MB / 1.014 GB Notification: Performance of NFSimplifyModel.simplify: time 0.001046/1.204, allocations: 464 kB / 1.302 GB, free: 3.199 MB / 1.014 GB Notification: Performance of NFPackage.collectConstants: time 8.449e-05/1.204, allocations: 39.03 kB / 1.302 GB, free: 3.199 MB / 1.014 GB Notification: Performance of NFFlatten.collectFunctions: time 0.001674/1.206, allocations: 0.6482 MB / 1.303 GB, free: 2.98 MB / 1.014 GB Notification: Performance of NFScalarize.scalarize: time 0.0002174/1.206, allocations: 131 kB / 1.303 GB, free: 2.902 MB / 1.014 GB Notification: Performance of NFVerifyModel.verify: time 0.0003991/1.206, allocations: 284.2 kB / 1.303 GB, free: 2.742 MB / 1.014 GB Notification: Performance of NFConvertDAE.convert: time 0.001941/1.208, allocations: 0.8422 MB / 1.304 GB, free: 2.422 MB / 1.014 GB Notification: Performance of FrontEnd - DAE generated: time 5.009e-06/1.208, allocations: 0.5 kB / 1.304 GB, free: 2.422 MB / 1.014 GB Notification: Performance of FrontEnd: time 2.205e-06/1.208, allocations: 0 / 1.304 GB, free: 2.422 MB / 1.014 GB Notification: Performance of Transformations before backend: time 1.361e-05/1.208, allocations: 0.5312 kB / 1.304 GB, free: 2.422 MB / 1.014 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 71 * Number of variables: 71 Notification: Performance of Generate backend data structure: time 0.002203/1.211, allocations: 0.9516 MB / 1.305 GB, free: 1.707 MB / 1.014 GB Notification: Performance of prepare preOptimizeDAE: time 4.043e-05/1.211, allocations: 8.938 kB / 1.305 GB, free: 1.707 MB / 1.014 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.000168/1.211, allocations: 68.95 kB / 1.305 GB, free: 1.672 MB / 1.014 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.0009005/1.212, allocations: 482.5 kB / 1.306 GB, free: 1.324 MB / 1.014 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 3.042e-05/1.212, allocations: 23.22 kB / 1.306 GB, free: 1.316 MB / 1.014 GB Notification: Performance of preOpt expandDerOperator (simulation): time 5.97e-05/1.212, allocations: 34.94 kB / 1.306 GB, free: 1.305 MB / 1.014 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.0007537/1.212, allocations: 310.2 kB / 1.306 GB, free: 1.184 MB / 1.014 GB Notification: Performance of preOpt findStateOrder (simulation): time 1.361e-05/1.213, allocations: 0.6094 kB / 1.306 GB, free: 1.184 MB / 1.014 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 3.524e-05/1.213, allocations: 10.94 kB / 1.306 GB, free: 1.176 MB / 1.014 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 1.138e-05/1.213, allocations: 6.281 kB / 1.306 GB, free: 1.176 MB / 1.014 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0006659/1.213, allocations: 263.9 kB / 1.306 GB, free: 1.102 MB / 1.014 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 0.002546/1.216, allocations: 1.35 MB / 1.307 GB, free: 184 kB / 1.014 GB Notification: Performance of preOpt comSubExp (simulation): time 0.0005808/1.216, allocations: 250.9 kB / 1.308 GB, free: 80 kB / 1.014 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0003099/1.217, allocations: 124.9 kB / 1.308 GB, free: 40 kB / 1.014 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0005367/1.217, allocations: 0.502 MB / 1.308 GB, free: 15.46 MB / 1.029 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 3.797e-05/1.217, allocations: 32.47 kB / 1.308 GB, free: 15.42 MB / 1.029 GB Notification: Performance of pre-optimization done (n=25): time 2.164e-06/1.217, allocations: 0 / 1.308 GB, free: 15.42 MB / 1.029 GB Notification: Performance of matching and sorting (n=25): time 0.001942/1.219, allocations: 0.5648 MB / 1.309 GB, free: 15.16 MB / 1.029 GB Notification: Performance of inlineWhenForInitialization (initialization): time 6.467e-05/1.219, allocations: 55.47 kB / 1.309 GB, free: 15.1 MB / 1.029 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0006191/1.22, allocations: 467.3 kB / 1.309 GB, free: 14.88 MB / 1.029 GB Notification: Performance of collectPreVariables (initialization): time 4.562e-05/1.22, allocations: 31.7 kB / 1.309 GB, free: 14.84 MB / 1.029 GB Notification: Performance of collectInitialEqns (initialization): time 0.0002316/1.22, allocations: 254.7 kB / 1.31 GB, free: 14.64 MB / 1.029 GB Notification: Performance of collectInitialBindings (initialization): time 9.058e-05/1.22, allocations: 89.27 kB / 1.31 GB, free: 14.57 MB / 1.029 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0001564/1.22, allocations: 75.5 kB / 1.31 GB, free: 14.53 MB / 1.029 GB Notification: Performance of setup shared object (initialization): time 0.0002212/1.221, allocations: 356.6 kB / 1.31 GB, free: 14.2 MB / 1.029 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.000366/1.221, allocations: 121.3 kB / 1.31 GB, free: 14.16 MB / 1.029 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0004177/1.221, allocations: 185.5 kB / 1.31 GB, free: 14.06 MB / 1.029 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0006963/1.222, allocations: 268.5 kB / 1.311 GB, free: 13.96 MB / 1.029 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 3.727e-06/1.222, allocations: 4 kB / 1.311 GB, free: 13.95 MB / 1.029 GB Notification: Performance of matching and sorting (n=37) (initialization): time 0.001694/1.224, allocations: 0.4906 MB / 1.311 GB, free: 13.77 MB / 1.029 GB Notification: Performance of prepare postOptimizeDAE: time 2.134e-05/1.224, allocations: 5.875 kB / 1.311 GB, free: 13.77 MB / 1.029 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 9.347e-06/1.224, allocations: 1.656 kB / 1.311 GB, free: 13.77 MB / 1.029 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.000397/1.224, allocations: 53.83 kB / 1.311 GB, free: 13.76 MB / 1.029 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0003761/1.225, allocations: 67.61 kB / 1.311 GB, free: 13.75 MB / 1.029 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.0005611/1.225, allocations: 0.5645 MB / 1.312 GB, free: 13.21 MB / 1.029 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0005413/1.226, allocations: 56.41 kB / 1.312 GB, free: 13.18 MB / 1.029 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 4.911e-05/1.226, allocations: 16.83 kB / 1.312 GB, free: 13.18 MB / 1.029 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.0004997/1.226, allocations: 239.9 kB / 1.312 GB, free: 13.04 MB / 1.029 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.0004011/1.227, allocations: 184.6 kB / 1.312 GB, free: 12.95 MB / 1.029 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.0006103/1.227, allocations: 253.9 kB / 1.313 GB, free: 12.85 MB / 1.029 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 2.644e-06/1.227, allocations: 2.125 kB / 1.313 GB, free: 12.85 MB / 1.029 GB Notification: Performance of matching and sorting (n=37) (initialization_lambda0): time 0.0008666/1.228, allocations: 367.8 kB / 1.313 GB, free: 12.71 MB / 1.029 GB Notification: Performance of prepare postOptimizeDAE: time 1.169e-05/1.228, allocations: 6.406 kB / 1.313 GB, free: 12.71 MB / 1.029 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 2.395e-06/1.228, allocations: 0 / 1.313 GB, free: 12.71 MB / 1.029 GB Notification: Performance of postOpt tearingSystem (initialization): time 8.887e-06/1.228, allocations: 7.359 kB / 1.313 GB, free: 12.71 MB / 1.029 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0004152/1.229, allocations: 87.94 kB / 1.313 GB, free: 12.69 MB / 1.029 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 6.302e-06/1.229, allocations: 2.797 kB / 1.313 GB, free: 12.69 MB / 1.029 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0005198/1.229, allocations: 47.39 kB / 1.313 GB, free: 12.68 MB / 1.029 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 3.708e-05/1.229, allocations: 15.55 kB / 1.313 GB, free: 12.67 MB / 1.029 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 3 * 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 (34): * Single equations (assignments): 33 * 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 {(1,3)} Notification: Performance of prepare postOptimizeDAE: time 0.0002145/1.229, allocations: 198 kB / 1.313 GB, free: 12.48 MB / 1.029 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0001033/1.229, allocations: 50.02 kB / 1.313 GB, free: 12.45 MB / 1.029 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.001121/1.231, allocations: 429.2 kB / 1.314 GB, free: 12.26 MB / 1.029 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.744e-05/1.231, allocations: 7.844 kB / 1.314 GB, free: 12.25 MB / 1.029 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 6.372e-06/1.231, allocations: 0 / 1.314 GB, free: 12.25 MB / 1.029 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 7.244e-06/1.231, allocations: 2.531 kB / 1.314 GB, free: 12.25 MB / 1.029 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.001936/1.233, allocations: 0.9456 MB / 1.315 GB, free: 11.69 MB / 1.029 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 5.56e-06/1.233, allocations: 1.219 kB / 1.315 GB, free: 11.69 MB / 1.029 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0002547/1.233, allocations: 53.12 kB / 1.315 GB, free: 11.68 MB / 1.029 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0002103/1.233, allocations: 38.23 kB / 1.315 GB, free: 11.67 MB / 1.029 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 2.976e-05/1.233, allocations: 8.844 kB / 1.315 GB, free: 11.66 MB / 1.029 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.0005047/1.234, allocations: 0.5638 MB / 1.315 GB, free: 11.12 MB / 1.029 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 7.985e-06/1.234, allocations: 10.55 kB / 1.315 GB, free: 11.11 MB / 1.029 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.001002/1.235, allocations: 495.5 kB / 1.316 GB, free: 10.82 MB / 1.029 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0002533/1.235, allocations: 156.2 kB / 1.316 GB, free: 10.68 MB / 1.029 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 7.336e-05/1.235, allocations: 8.297 kB / 1.316 GB, free: 10.68 MB / 1.029 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0003353/1.235, allocations: 25.88 kB / 1.316 GB, free: 10.67 MB / 1.029 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 7.67e-05/1.235, allocations: 32.31 kB / 1.316 GB, free: 10.66 MB / 1.029 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 3.133e-05/1.235, allocations: 12.97 kB / 1.316 GB, free: 10.65 MB / 1.029 GB Notification: Performance of sorting global known variables: time 0.0004682/1.236, allocations: 319.9 kB / 1.316 GB, free: 10.5 MB / 1.029 GB Notification: Performance of sort global known variables: time 1.1e-07/1.236, allocations: 0 / 1.316 GB, free: 10.5 MB / 1.029 GB Notification: Performance of remove unused functions: time 0.001023/1.237, allocations: 253.8 kB / 1.317 GB, free: 10.45 MB / 1.029 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 5 * 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 simulation (25): * Single equations (assignments): 21 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 3 * 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 {(1,3)} Notification: Performance of Backend phase and start with SimCode phase: time 0.0006991/1.237, allocations: 259.8 kB / 1.317 GB, free: 10.3 MB / 1.029 GB Notification: Performance of simCode: created initialization part: time 0.001364/1.239, allocations: 440.1 kB / 1.317 GB, free: 10.2 MB / 1.029 GB Notification: Performance of simCode: created event and clocks part: time 3.076e-06/1.239, allocations: 1.125 kB / 1.317 GB, free: 10.2 MB / 1.029 GB Notification: Performance of simCode: created simulation system equations: time 0.0004286/1.239, allocations: 154.6 kB / 1.317 GB, free: 10.16 MB / 1.029 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.00112/1.24, allocations: 218.2 kB / 1.318 GB, free: 10.08 MB / 1.029 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.001753/1.242, allocations: 0.874 MB / 1.318 GB, free: 9.555 MB / 1.029 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0005525/1.243, allocations: 0.8539 MB / 1.319 GB, free: 8.844 MB / 1.029 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0001582/1.243, allocations: 48.48 kB / 1.319 GB, free: 8.828 MB / 1.029 GB Notification: Performance of SimCode: time 7.61e-07/1.243, allocations: 0 / 1.319 GB, free: 8.828 MB / 1.029 GB Notification: Performance of Templates: time 0.02169/1.265, allocations: 10.22 MB / 1.329 GB, free: 7.637 MB / 1.029 GB [Timeout remaining time 299] make -j1 -f Buildings_11_Buildings.Fluid.FixedResistances.Examples.CheckValve.makefile [Timeout 300] (rm -f Buildings_11_Buildings.Fluid.FixedResistances.Examples.CheckValve.pipe ; mkfifo Buildings_11_Buildings.Fluid.FixedResistances.Examples.CheckValve.pipe ; head -c 1048576 < Buildings_11_Buildings.Fluid.FixedResistances.Examples.CheckValve.pipe >> ../files/Buildings_11_Buildings.Fluid.FixedResistances.Examples.CheckValve.sim & ./Buildings_11_Buildings.Fluid.FixedResistances.Examples.CheckValve -abortSlowSimulation -alarm=400 -emit_protected -lv LOG_STATS > Buildings_11_Buildings.Fluid.FixedResistances.Examples.CheckValve.pipe 2>&1) [Timeout 400] diffSimulationResults("Buildings_11_Buildings.Fluid.FixedResistances.Examples.CheckValve_res.mat","/mnt/ReferenceFiles/Buildings/csv/maint_11.x/Buildings_Fluid_FixedResistances_Examples_CheckValve.csv","/var/lib/jenkins1/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/files/Buildings_11_Buildings.Fluid.FixedResistances.Examples.CheckValve.diff",relTol=0.003,relTolDiffMinMax=0.003,rangeDelta=0.001) [Timeout 300] [Timeout remaining time 300] Reference file matches