Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_9_Buildings.Fluid.HeatExchangers.Validation.WetCoilEffectivenessNTU.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 9.1.3-maint.9.1.x/package.mo", uses=false) Using package Buildings with version 9.1.3 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 9.1.3-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.HeatExchangers.Validation.WetCoilEffectivenessNTU,tolerance=1e-06,outputFormat="mat",numberOfIntervals=5000,variableFilter="time|hexWetNTU.Q1_flow|hexWetNTU_TX.Q1_flow|hexWetNTU.sta_b2.T|hexWetNTU_TX.sta_b2.T|relHumOut_eps.phi|hexWetNTU.SHR|hexWetNTU.dryFra|hexWetNTU.UA_nominal|hexWetNTU_TX.UA_nominal",fileNamePrefix="Buildings_9_Buildings.Fluid.HeatExchangers.Validation.WetCoilEffectivenessNTU") translateModel(Buildings.Fluid.HeatExchangers.Validation.WetCoilEffectivenessNTU,tolerance=1e-06,outputFormat="mat",numberOfIntervals=5000,variableFilter="time|hexWetNTU.Q1_flow|hexWetNTU_TX.Q1_flow|hexWetNTU.sta_b2.T|hexWetNTU_TX.sta_b2.T|relHumOut_eps.phi|hexWetNTU.SHR|hexWetNTU.dryFra|hexWetNTU.UA_nominal|hexWetNTU_TX.UA_nominal",fileNamePrefix="Buildings_9_Buildings.Fluid.HeatExchangers.Validation.WetCoilEffectivenessNTU") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.00764/0.00764, allocations: 99.95 kB / 15.73 MB, free: 6.062 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001755/0.001755, allocations: 189.6 kB / 16.67 MB, free: 5.973 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.373/1.373, allocations: 222.9 MB / 240.4 MB, free: 4.156 MB / 190.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 9.1.3-maint.9.1.x/package.mo): time 2.422/2.422, allocations: 390.2 MB / 0.6648 GB, free: 180 kB / 0.5137 GB Notification: Performance of FrontEnd - loaded program: time 0.001269/0.001269, allocations: 62.88 kB / 0.9509 GB, free: 5.539 MB / 0.7169 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.3047/0.306, allocations: 140.4 MB / 1.088 GB, free: 1.461 MB / 0.8419 GB Notification: Performance of NFInst.instantiate(Buildings.Fluid.HeatExchangers.Validation.WetCoilEffectivenessNTU): time 1.048/1.355, allocations: 369.8 MB / 1.449 GB, free: 11.32 MB / 1.076 GB Notification: Performance of NFInst.instExpressions: time 0.05382/1.408, allocations: 33.31 MB / 1.482 GB, free: 12.4 MB / 1.107 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.0105/1.419, allocations: 151.2 kB / 1.482 GB, free: 12.25 MB / 1.107 GB Notification: Performance of NFTyping.typeComponents: time 0.009162/1.428, allocations: 2.446 MB / 1.484 GB, free: 9.793 MB / 1.107 GB Notification: Performance of NFTyping.typeBindings: time 0.02611/1.454, allocations: 7.825 MB / 1.492 GB, free: 1.941 MB / 1.107 GB Notification: Performance of NFTyping.typeClassSections: time 0.01282/1.467, allocations: 4.565 MB / 1.496 GB, free: 13.41 MB / 1.123 GB Notification: Performance of NFFlatten.flatten: time 0.01774/1.485, allocations: 11.09 MB / 1.507 GB, free: 2.281 MB / 1.123 GB Notification: Performance of NFFlatten.resolveConnections: time 0.007822/1.493, allocations: 3.973 MB / 1.511 GB, free: 14.24 MB / 1.139 GB Notification: Performance of NFEvalConstants.evaluate: time 0.01623/1.509, allocations: 5.563 MB / 1.516 GB, free: 8.73 MB / 1.139 GB Notification: Performance of NFSimplifyModel.simplify: time 0.007957/1.517, allocations: 3.446 MB / 1.52 GB, free: 5.281 MB / 1.139 GB Notification: Performance of NFPackage.collectConstants: time 0.002608/1.52, allocations: 0.5508 MB / 1.52 GB, free: 4.73 MB / 1.139 GB Notification: Performance of NFFlatten.collectFunctions: time 0.01734/1.537, allocations: 6.825 MB / 1.527 GB, free: 13.89 MB / 1.154 GB Notification: Performance of NFScalarize.scalarize: time 0.002917/1.54, allocations: 1.464 MB / 1.528 GB, free: 12.43 MB / 1.154 GB Notification: Performance of NFVerifyModel.verify: time 0.006665/1.547, allocations: 2.839 MB / 1.531 GB, free: 9.574 MB / 1.154 GB Notification: Performance of NFConvertDAE.convert: time 0.02246/1.569, allocations: 9.788 MB / 1.541 GB, free: 15.75 MB / 1.17 GB Notification: Performance of FrontEnd - DAE generated: time 6.161e-06/1.569, allocations: 0 / 1.541 GB, free: 15.75 MB / 1.17 GB Notification: Performance of FrontEnd: time 2.034e-06/1.569, allocations: 0 / 1.541 GB, free: 15.75 MB / 1.17 GB Notification: Performance of Transformations before backend: time 0.0003111/1.57, allocations: 4 kB / 1.541 GB, free: 15.75 MB / 1.17 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 851 * Number of variables: 851 Notification: Performance of Generate backend data structure: time 0.01823/1.588, allocations: 6.11 MB / 1.547 GB, free: 9.527 MB / 1.17 GB Notification: Performance of prepare preOptimizeDAE: time 4.461e-05/1.588, allocations: 8.031 kB / 1.547 GB, free: 9.52 MB / 1.17 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.03153/1.619, allocations: 4.32 MB / 1.551 GB, free: 5.191 MB / 1.17 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.01003/1.629, allocations: 3.723 MB / 1.555 GB, free: 1.41 MB / 1.17 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0007069/1.63, allocations: 312.9 kB / 1.555 GB, free: 1.098 MB / 1.17 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.002587/1.633, allocations: 356 kB / 1.555 GB, free: 0.75 MB / 1.17 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.02038/1.653, allocations: 5.689 MB / 1.561 GB, free: 10.98 MB / 1.186 GB Notification: Performance of preOpt findStateOrder (simulation): time 0.0001261/1.653, allocations: 0 / 1.561 GB, free: 10.98 MB / 1.186 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.001267/1.655, allocations: 136 kB / 1.561 GB, free: 10.84 MB / 1.186 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.0002016/1.655, allocations: 134.5 kB / 1.561 GB, free: 10.71 MB / 1.186 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.02475/1.68, allocations: 6.81 MB / 1.568 GB, free: 3.891 MB / 1.186 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 0.05085/1.731, allocations: 22.18 MB / 1.589 GB, free: 12.58 MB / 1.217 GB Notification: Performance of preOpt comSubExp (simulation): time 0.01307/1.744, allocations: 4.062 MB / 1.593 GB, free: 8.52 MB / 1.217 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.007487/1.751, allocations: 2.266 MB / 1.595 GB, free: 6.25 MB / 1.217 GB Notification: Performance of preOpt evalFunc (simulation): time 0.01865/1.77, allocations: 8.181 MB / 1.603 GB, free: 13.7 MB / 1.232 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.007847/1.778, allocations: 2.397 MB / 1.606 GB, free: 11.29 MB / 1.232 GB Notification: Performance of pre-optimization done (n=230): time 6.322e-06/1.778, allocations: 0 / 1.606 GB, free: 11.29 MB / 1.232 GB Notification: Performance of matching and sorting (n=230): time 0.03603/1.814, allocations: 8.463 MB / 1.614 GB, free: 2.684 MB / 1.232 GB Notification: Performance of inlineWhenForInitialization (initialization): time 5.638e-05/1.814, allocations: 73.41 kB / 1.614 GB, free: 2.602 MB / 1.232 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.009738/1.824, allocations: 4.285 MB / 1.618 GB, free: 14.29 MB / 1.248 GB Notification: Performance of collectPreVariables (initialization): time 0.0008122/1.825, allocations: 77.7 kB / 1.618 GB, free: 14.21 MB / 1.248 GB Notification: Performance of collectInitialEqns (initialization): time 0.001935/1.827, allocations: 1.853 MB / 1.62 GB, free: 12.35 MB / 1.248 GB Notification: Performance of collectInitialBindings (initialization): time 0.001395/1.828, allocations: 0.8327 MB / 1.621 GB, free: 11.51 MB / 1.248 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.002969/1.831, allocations: 0.8161 MB / 1.622 GB, free: 10.68 MB / 1.248 GB Notification: Performance of setup shared object (initialization): time 8.431e-05/1.831, allocations: 301.1 kB / 1.622 GB, free: 10.39 MB / 1.248 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.009576/1.841, allocations: 2.724 MB / 1.625 GB, free: 7.66 MB / 1.248 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.01059/1.851, allocations: 3.404 MB / 1.628 GB, free: 4.02 MB / 1.248 GB Notification: It was not possible to check the given initialization system for consistency symbolically, because the relevant equations are part of an algebraic loop. This is not supported yet. Notification: Performance of analyzeInitialSystem (initialization): time 0.01998/1.871, allocations: 5.945 MB / 1.634 GB, free: 13.83 MB / 1.264 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 3.535e-05/1.871, allocations: 4 kB / 1.634 GB, free: 13.82 MB / 1.264 GB Notification: Performance of matching and sorting (n=448) (initialization): time 0.0311/1.902, allocations: 7.573 MB / 1.641 GB, free: 6.188 MB / 1.264 GB Notification: Performance of prepare postOptimizeDAE: time 4.466e-05/1.902, allocations: 13.72 kB / 1.641 GB, free: 6.176 MB / 1.264 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 3.734e-05/1.903, allocations: 12 kB / 1.641 GB, free: 6.164 MB / 1.264 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.004273/1.907, allocations: 0.9758 MB / 1.642 GB, free: 5.16 MB / 1.264 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.009483/1.916, allocations: 1.404 MB / 1.644 GB, free: 3.754 MB / 1.264 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.01749/1.934, allocations: 14.46 MB / 1.658 GB, free: 4.199 MB / 1.279 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.01083/1.945, allocations: 1.182 MB / 1.659 GB, free: 3.016 MB / 1.279 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.001294/1.946, allocations: 183.8 kB / 1.659 GB, free: 2.836 MB / 1.279 GB Warning: The initial conditions are over specified. The following 2 initial equations are redundant, so they are removed from the initialization system: hexWetNTU.UAFroRated.TAirIn = 293.15 hexWetNTU.UAFroRated.TWatIn = 293.15. Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 67 * Number of states: 0 () * Number of discrete variables: 13 (hexWetNTU.UAFroRated.isFulWet,hexWetNTU.UAFroRated.isFulDry,hexWetNTU.flowRegime_nominal,hexWetNTU_TX.flowRegime_nominal,$PRE.w_a2.nextTimeEvent,$whenCondition1,hexWetNTU_TX.UAFroRated.isFulWet,hexWetNTU_TX.UAFroRated.isFulDry,w_a2.nextTimeEventScaled,$PRE.w_a2.nextTimeEventScaled,w_a2.nextTimeEvent,hexWetNTU_TX.flowRegime,hexWetNTU.flowRegime) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (418): * Single equations (assignments): 403 * Array equations: 4 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 2 * Torn equation systems: 9 * Mixed (continuous/discrete) equation systems: 0 Notification: Equation system details (not torn): * Constant Jacobian (size): 0 systems * Linear Jacobian (size,density): 0 systems * Non-linear Jacobian (size): 2 systems {1, 1} * Without analytic Jacobian (size): 0 systems 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): 9 systems {(1,1), (1,3), (1,2), (1,2), (1,4), (1,2), (1,4), (1,2), (5,2)} Notification: Performance of prepare postOptimizeDAE: time 0.003401/1.949, allocations: 0.8629 MB / 1.66 GB, free: 1.965 MB / 1.279 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.002066/1.952, allocations: 441.1 kB / 1.66 GB, free: 1.531 MB / 1.279 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.02377/1.975, allocations: 5.794 MB / 1.666 GB, free: 11.7 MB / 1.295 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 4.462e-05/1.975, allocations: 27.98 kB / 1.666 GB, free: 11.68 MB / 1.295 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 1.315e-05/1.975, allocations: 3.938 kB / 1.666 GB, free: 11.67 MB / 1.295 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 6.49e-05/1.975, allocations: 15.89 kB / 1.666 GB, free: 11.66 MB / 1.295 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.03453/2.01, allocations: 10.93 MB / 1.677 GB, free: 0.5547 MB / 1.295 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 2.885e-05/2.01, allocations: 4 kB / 1.677 GB, free: 0.5508 MB / 1.295 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.005503/2.016, allocations: 0.6636 MB / 1.677 GB, free: 15.89 MB / 1.311 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.00362/2.019, allocations: 0.7676 MB / 1.678 GB, free: 15.09 MB / 1.311 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.001096/2.02, allocations: 79.91 kB / 1.678 GB, free: 15.02 MB / 1.311 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.01558/2.036, allocations: 11.69 MB / 1.69 GB, free: 2.414 MB / 1.311 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 8.887e-06/2.036, allocations: 7.938 kB / 1.69 GB, free: 2.406 MB / 1.311 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.0318/2.068, allocations: 8.224 MB / 1.698 GB, free: 10.08 MB / 1.326 GB Notification: Performance of postOpt removeConstants (simulation): time 0.00374/2.072, allocations: 1.087 MB / 1.699 GB, free: 8.973 MB / 1.326 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.002119/2.074, allocations: 44 kB / 1.699 GB, free: 8.93 MB / 1.326 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.007586/2.081, allocations: 0.5267 MB / 1.699 GB, free: 8.402 MB / 1.326 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0008611/2.082, allocations: 169.6 kB / 1.699 GB, free: 8.234 MB / 1.326 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0007952/2.083, allocations: 111.9 kB / 1.7 GB, free: 8.125 MB / 1.326 GB Notification: Performance of sorting global known variables: time 0.008292/2.091, allocations: 2.947 MB / 1.702 GB, free: 5.176 MB / 1.326 GB Notification: Performance of sort global known variables: time 5.91e-07/2.091, allocations: 0 / 1.702 GB, free: 5.176 MB / 1.326 GB Notification: Performance of remove unused functions: time 0.00777/2.099, allocations: 1.541 MB / 1.704 GB, free: 3.633 MB / 1.326 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 16 * Number of states: 8 (relHumIn.phi,TDryBulIn.T,senMasFraIn.X,senMasFraOut.X,TDryBulOut.T,hexWetNTU.dryWetCalcs.fullyWet.TWatOutEst,relHumOut_eps.phi,hexWetNTU_TX.dryWetCalcs.fullyWet.TWatOutEst) * Number of discrete variables: 5 ($whenCondition1,hexWetNTU.flowRegime,hexWetNTU_TX.flowRegime,w_a2.nextTimeEvent,w_a2.nextTimeEventScaled) * Number of discrete states: 2 (w_a2.nextTimeEvent,w_a2.nextTimeEventScaled) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (227): * Single equations (assignments): 214 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 3 * When equations: 2 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 8 * 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): 8 systems {(1,4), (1,2), (1,4), (1,2), (1,1), (1,1), (1,3), (1,3)} Notification: Performance of Backend phase and start with SimCode phase: time 0.00332/2.103, allocations: 1.06 MB / 1.705 GB, free: 2.699 MB / 1.326 GB Notification: Performance of simCode: created initialization part: time 0.02373/2.126, allocations: 6.397 MB / 1.711 GB, free: 12.24 MB / 1.342 GB Notification: Performance of simCode: created event and clocks part: time 1.09e-05/2.126, allocations: 0 / 1.711 GB, free: 12.24 MB / 1.342 GB Notification: Performance of simCode: created simulation system equations: time 0.009748/2.136, allocations: 3.038 MB / 1.714 GB, free: 9.121 MB / 1.342 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.01703/2.153, allocations: 2.081 MB / 1.716 GB, free: 7.055 MB / 1.342 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.03374/2.187, allocations: 9.296 MB / 1.725 GB, free: 13.7 MB / 1.357 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.003286/2.19, allocations: 2.298 MB / 1.728 GB, free: 11.37 MB / 1.357 GB Notification: Performance of simCode: alias equations: time 0.007886/2.198, allocations: 1.037 MB / 1.729 GB, free: 10.33 MB / 1.357 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.002723/2.201, allocations: 367.2 kB / 1.729 GB, free: 9.969 MB / 1.357 GB Notification: Performance of SimCode: time 1.153e-06/2.201, allocations: 4 kB / 1.729 GB, free: 9.965 MB / 1.357 GB Notification: Performance of Templates: time 0.7477/2.949, allocations: 97.47 MB / 1.824 GB, free: 0.5386 GB / 1.42 GB make -j1 -f Buildings_9_Buildings.Fluid.HeatExchangers.Validation.WetCoilEffectivenessNTU.makefile (rm -f Buildings_9_Buildings.Fluid.HeatExchangers.Validation.WetCoilEffectivenessNTU.pipe ; mkfifo Buildings_9_Buildings.Fluid.HeatExchangers.Validation.WetCoilEffectivenessNTU.pipe ; head -c 1048576 < Buildings_9_Buildings.Fluid.HeatExchangers.Validation.WetCoilEffectivenessNTU.pipe >> ../files/Buildings_9_Buildings.Fluid.HeatExchangers.Validation.WetCoilEffectivenessNTU.sim & ./Buildings_9_Buildings.Fluid.HeatExchangers.Validation.WetCoilEffectivenessNTU -abortSlowSimulation -alarm=480 -emit_protected -lv LOG_STATS > Buildings_9_Buildings.Fluid.HeatExchangers.Validation.WetCoilEffectivenessNTU.pipe 2>&1) diffSimulationResults("Buildings_9_Buildings.Fluid.HeatExchangers.Validation.WetCoilEffectivenessNTU_res.mat","/mnt/ReferenceFiles/Buildings/csv/maint_9.1.x/Buildings_Fluid_HeatExchangers_Validation_WetCoilEffectivenessNTU.csv","/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/files/Buildings_9_Buildings.Fluid.HeatExchangers.Validation.WetCoilEffectivenessNTU.diff",relTol=0.003,relTolDiffMinMax=0.003,rangeDelta=0.001) Reference file matches