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 0.007087/0.007087, allocations: 104.8 kB / 15.73 MB, free: 6.039 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001249/0.00125, allocations: 193 kB / 16.67 MB, free: 5.969 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: 4.312 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 2.44/2.44, allocations: 390.2 MB / 0.6648 GB, free: 272 kB / 0.5137 GB Notification: Performance of FrontEnd - loaded program: time 0.001231/0.001231, allocations: 67.58 kB / 0.9509 GB, free: 5.516 MB / 0.7169 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.2708/0.2721, allocations: 140.4 MB / 1.088 GB, free: 1.496 MB / 0.8419 GB Notification: Performance of NFInst.instantiate(Buildings.Fluid.HeatExchangers.Validation.WetCoilEffectivenessNTU): time 1.048/1.32, allocations: 369.8 MB / 1.449 GB, free: 11.46 MB / 1.076 GB Notification: Performance of NFInst.instExpressions: time 0.04848/1.369, allocations: 33.3 MB / 1.482 GB, free: 12.58 MB / 1.107 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.007927/1.377, allocations: 155.1 kB / 1.482 GB, free: 12.43 MB / 1.107 GB Notification: Performance of NFTyping.typeComponents: time 0.007944/1.385, allocations: 2.446 MB / 1.484 GB, free: 9.969 MB / 1.107 GB Notification: Performance of NFTyping.typeBindings: time 0.02347/1.408, allocations: 7.837 MB / 1.492 GB, free: 2.105 MB / 1.107 GB Notification: Performance of NFTyping.typeClassSections: time 0.01269/1.421, allocations: 4.562 MB / 1.496 GB, free: 13.57 MB / 1.123 GB Notification: Performance of NFFlatten.flatten: time 0.02072/1.442, allocations: 11.07 MB / 1.507 GB, free: 2.457 MB / 1.123 GB Notification: Performance of NFFlatten.resolveConnections: time 0.008191/1.45, allocations: 3.977 MB / 1.511 GB, free: 14.42 MB / 1.139 GB Notification: Performance of NFEvalConstants.evaluate: time 0.01618/1.466, allocations: 5.558 MB / 1.516 GB, free: 8.91 MB / 1.139 GB Notification: Performance of NFSimplifyModel.simplify: time 0.008117/1.474, allocations: 3.453 MB / 1.52 GB, free: 5.453 MB / 1.139 GB Notification: Performance of NFPackage.collectConstants: time 0.002703/1.477, allocations: 0.5508 MB / 1.52 GB, free: 4.902 MB / 1.139 GB Notification: Performance of NFFlatten.collectFunctions: time 0.01679/1.494, allocations: 6.825 MB / 1.527 GB, free: 14.07 MB / 1.154 GB Notification: Performance of NFScalarize.scalarize: time 0.003001/1.497, allocations: 1.464 MB / 1.528 GB, free: 12.6 MB / 1.154 GB Notification: Performance of NFVerifyModel.verify: time 0.007055/1.504, allocations: 2.839 MB / 1.531 GB, free: 9.746 MB / 1.154 GB Notification: Performance of NFConvertDAE.convert: time 0.0224/1.526, allocations: 9.75 MB / 1.541 GB, free: 15.97 MB / 1.17 GB Notification: Performance of FrontEnd - DAE generated: time 5.51e-06/1.526, allocations: 0 / 1.541 GB, free: 15.97 MB / 1.17 GB Notification: Performance of FrontEnd: time 1.512e-06/1.526, allocations: 4 kB / 1.541 GB, free: 15.96 MB / 1.17 GB Notification: Performance of Transformations before backend: time 0.0002274/1.527, allocations: 0 / 1.541 GB, free: 15.96 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 0.01552/1.542, allocations: 5.949 MB / 1.546 GB, free: 9.914 MB / 1.17 GB Notification: Performance of prepare preOptimizeDAE: time 4.835e-05/1.542, allocations: 8.031 kB / 1.546 GB, free: 9.906 MB / 1.17 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.02935/1.572, allocations: 4.294 MB / 1.551 GB, free: 5.602 MB / 1.17 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.01086/1.583, allocations: 3.685 MB / 1.554 GB, free: 1.852 MB / 1.17 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0005425/1.583, allocations: 312.9 kB / 1.555 GB, free: 1.539 MB / 1.17 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.001883/1.585, allocations: 352 kB / 1.555 GB, free: 1.195 MB / 1.17 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.02014/1.605, allocations: 5.693 MB / 1.56 GB, free: 11.42 MB / 1.186 GB Notification: Performance of preOpt findStateOrder (simulation): time 0.0001486/1.605, allocations: 3.938 kB / 1.56 GB, free: 11.41 MB / 1.186 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.001517/1.607, allocations: 136 kB / 1.561 GB, free: 11.28 MB / 1.186 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.0001856/1.607, allocations: 142.5 kB / 1.561 GB, free: 11.14 MB / 1.186 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.02409/1.631, allocations: 6.798 MB / 1.567 GB, free: 4.332 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 0.05123/1.683, allocations: 22.14 MB / 1.589 GB, free: 13.05 MB / 1.217 GB Notification: Performance of preOpt comSubExp (simulation): time 0.01282/1.695, allocations: 4.062 MB / 1.593 GB, free: 8.992 MB / 1.217 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.007135/1.703, allocations: 2.27 MB / 1.595 GB, free: 6.719 MB / 1.217 GB Notification: Performance of preOpt evalFunc (simulation): time 0.01655/1.719, allocations: 8.176 MB / 1.603 GB, free: 14.17 MB / 1.232 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.007667/1.727, allocations: 2.393 MB / 1.605 GB, free: 11.76 MB / 1.232 GB Notification: Performance of pre-optimization done (n=230): time 6.001e-06/1.727, allocations: 4 kB / 1.605 GB, free: 11.76 MB / 1.232 GB Notification: Performance of matching and sorting (n=230): time 0.0336/1.761, allocations: 8.437 MB / 1.614 GB, free: 3.18 MB / 1.232 GB Notification: Performance of inlineWhenForInitialization (initialization): time 6.581e-05/1.761, allocations: 73.41 kB / 1.614 GB, free: 3.098 MB / 1.232 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.01003/1.771, allocations: 4.277 MB / 1.618 GB, free: 14.8 MB / 1.248 GB Notification: Performance of collectPreVariables (initialization): time 0.0008684/1.772, allocations: 77.7 kB / 1.618 GB, free: 14.71 MB / 1.248 GB Notification: Performance of collectInitialEqns (initialization): time 0.00206/1.774, allocations: 1.821 MB / 1.62 GB, free: 12.88 MB / 1.248 GB Notification: Performance of collectInitialBindings (initialization): time 0.00142/1.775, allocations: 0.7933 MB / 1.621 GB, free: 12.07 MB / 1.248 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.003142/1.778, allocations: 0.8119 MB / 1.621 GB, free: 11.25 MB / 1.248 GB Notification: Performance of setup shared object (initialization): time 9.752e-05/1.778, allocations: 309.1 kB / 1.622 GB, free: 10.95 MB / 1.248 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.009273/1.788, allocations: 2.712 MB / 1.624 GB, free: 8.234 MB / 1.248 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.01043/1.798, allocations: 3.412 MB / 1.628 GB, free: 4.586 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 0.01985/1.818, allocations: 5.941 MB / 1.633 GB, free: 14.4 MB / 1.264 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 3.75e-05/1.818, allocations: 4 kB / 1.633 GB, free: 14.4 MB / 1.264 GB Notification: Performance of matching and sorting (n=448) (initialization): time 0.03008/1.848, allocations: 7.56 MB / 1.641 GB, free: 6.77 MB / 1.264 GB Notification: Performance of prepare postOptimizeDAE: time 4.504e-05/1.848, allocations: 12 kB / 1.641 GB, free: 6.758 MB / 1.264 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 3.43e-05/1.848, allocations: 12 kB / 1.641 GB, free: 6.746 MB / 1.264 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.004175/1.852, allocations: 0.9714 MB / 1.642 GB, free: 5.746 MB / 1.264 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.009129/1.862, allocations: 1.4 MB / 1.643 GB, free: 4.344 MB / 1.264 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.01737/1.879, allocations: 14.46 MB / 1.657 GB, free: 4.797 MB / 1.279 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.01083/1.89, allocations: 1.172 MB / 1.658 GB, free: 3.621 MB / 1.279 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.001383/1.891, allocations: 183.8 kB / 1.659 GB, free: 3.441 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 0.003677/1.895, allocations: 0.8562 MB / 1.659 GB, free: 2.574 MB / 1.279 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.002246/1.897, allocations: 422.8 kB / 1.66 GB, free: 2.156 MB / 1.279 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.02436/1.922, allocations: 5.796 MB / 1.666 GB, free: 12.32 MB / 1.295 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 5.243e-05/1.922, allocations: 31.92 kB / 1.666 GB, free: 12.29 MB / 1.295 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 1.385e-05/1.922, allocations: 3.938 kB / 1.666 GB, free: 12.29 MB / 1.295 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 7.744e-05/1.922, allocations: 12 kB / 1.666 GB, free: 12.28 MB / 1.295 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.03485/1.957, allocations: 10.92 MB / 1.676 GB, free: 1.184 MB / 1.295 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 3.138e-05/1.957, allocations: 4 kB / 1.676 GB, free: 1.18 MB / 1.295 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.004878/1.962, allocations: 0.6671 MB / 1.677 GB, free: 0.5117 MB / 1.295 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.00333/1.965, allocations: 0.7638 MB / 1.678 GB, free: 15.72 MB / 1.311 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0008383/1.966, allocations: 79.91 kB / 1.678 GB, free: 15.64 MB / 1.311 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.01422/1.98, allocations: 11.68 MB / 1.689 GB, free: 3.055 MB / 1.311 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 5.881e-06/1.98, allocations: 7.938 kB / 1.689 GB, free: 3.047 MB / 1.311 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.03136/2.012, allocations: 8.21 MB / 1.697 GB, free: 10.73 MB / 1.326 GB Notification: Performance of postOpt removeConstants (simulation): time 0.003783/2.015, allocations: 1.057 MB / 1.698 GB, free: 9.652 MB / 1.326 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.001956/2.017, allocations: 47.98 kB / 1.698 GB, free: 9.605 MB / 1.326 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.007002/2.024, allocations: 0.519 MB / 1.699 GB, free: 9.086 MB / 1.326 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0008301/2.025, allocations: 173.6 kB / 1.699 GB, free: 8.914 MB / 1.326 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0007599/2.026, allocations: 107.9 kB / 1.699 GB, free: 8.809 MB / 1.326 GB Notification: Performance of sorting global known variables: time 0.007763/2.034, allocations: 2.955 MB / 1.702 GB, free: 5.852 MB / 1.326 GB Notification: Performance of sort global known variables: time 4.2e-07/2.034, allocations: 0 / 1.702 GB, free: 5.852 MB / 1.326 GB Notification: Performance of remove unused functions: time 0.007093/2.041, allocations: 1.533 MB / 1.703 GB, free: 4.316 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 0.003156/2.044, allocations: 1.049 MB / 1.704 GB, free: 3.387 MB / 1.326 GB Notification: Performance of simCode: created initialization part: time 0.02237/2.067, allocations: 6.401 MB / 1.711 GB, free: 12.92 MB / 1.342 GB Notification: Performance of simCode: created event and clocks part: time 9.037e-06/2.067, allocations: 0 / 1.711 GB, free: 12.92 MB / 1.342 GB Notification: Performance of simCode: created simulation system equations: time 0.009317/2.076, allocations: 3.034 MB / 1.714 GB, free: 9.809 MB / 1.342 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.01442/2.09, allocations: 2.091 MB / 1.716 GB, free: 7.734 MB / 1.342 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.03015/2.121, allocations: 9.147 MB / 1.725 GB, free: 14.53 MB / 1.357 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.003561/2.124, allocations: 2.294 MB / 1.727 GB, free: 12.21 MB / 1.357 GB Notification: Performance of simCode: alias equations: time 0.007265/2.132, allocations: 1.049 MB / 1.728 GB, free: 11.16 MB / 1.357 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.002304/2.134, allocations: 367.2 kB / 1.728 GB, free: 10.8 MB / 1.357 GB Notification: Performance of SimCode: time 1.202e-06/2.134, allocations: 0 / 1.728 GB, free: 10.8 MB / 1.357 GB Notification: Performance of Templates: time 0.7558/2.89, allocations: 97.45 MB / 1.823 GB, free: 0.5404 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