Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_9_Buildings.Fluid.FMI.Validation.HeaterFan.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: "" <> buildModelFMU(Buildings.Fluid.FMI.Validation.HeaterFan,fileNamePrefix="Buildings_9_Buildings_Fluid_FMI_Validation_HeaterFan",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(Buildings.Fluid.FMI.Validation.HeaterFan,fileNamePrefix="Buildings_9_Buildings_Fluid_FMI_Validation_HeaterFan",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 0.004457/0.004457, allocations: 102.9 kB / 15.74 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 0.0011/0.001099, allocations: 201.2 kB / 16.68 MB, free: 5.965 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.332/1.332, allocations: 222.9 MB / 240.4 MB, free: 4.32 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 2.306/2.306, allocations: 390.2 MB / 0.6648 GB, free: 184 kB / 0.5137 GB Notification: Performance of FrontEnd - loaded program: time 0.001272/0.001272, allocations: 70.52 kB / 0.9504 GB, free: 5.949 MB / 0.7169 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.2381/0.2394, allocations: 140.4 MB / 1.087 GB, free: 1.988 MB / 0.8419 GB [/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/Blocks/Math.mo:543:5-544:48:writable] Warning: Parameter floMac.com.gaiSpe.k has no value, and is fixed during initialization (fixed=true), using available start value (start=1) as default value. Notification: Performance of NFInst.instantiate(Buildings.Fluid.FMI.Validation.HeaterFan): time 0.8475/1.087, allocations: 312.3 MB / 1.392 GB, free: 5.684 MB / 1.029 GB Notification: Performance of NFInst.instExpressions: time 0.03175/1.119, allocations: 27.53 MB / 1.419 GB, free: 3.391 MB / 1.045 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.00298/1.122, allocations: 83.53 kB / 1.419 GB, free: 3.363 MB / 1.045 GB Notification: Performance of NFTyping.typeComponents: time 0.003992/1.126, allocations: 1.628 MB / 1.421 GB, free: 2.047 MB / 1.045 GB Notification: Performance of NFTyping.typeBindings: time 0.007885/1.134, allocations: 3.125 MB / 1.424 GB, free: 15.62 MB / 1.061 GB Notification: Performance of NFTyping.typeClassSections: time 0.006399/1.14, allocations: 2.658 MB / 1.427 GB, free: 13.67 MB / 1.061 GB Notification: Performance of NFFlatten.flatten: time 0.00591/1.146, allocations: 4.635 MB / 1.431 GB, free: 10.95 MB / 1.061 GB Notification: Performance of NFFlatten.resolveConnections: time 0.002583/1.149, allocations: 2.043 MB / 1.433 GB, free: 9.648 MB / 1.061 GB Notification: Performance of NFEvalConstants.evaluate: time 0.004331/1.153, allocations: 2.448 MB / 1.436 GB, free: 8.125 MB / 1.061 GB Notification: Performance of NFSimplifyModel.simplify: time 0.00215/1.155, allocations: 1.454 MB / 1.437 GB, free: 7.219 MB / 1.061 GB Notification: Performance of NFPackage.collectConstants: time 0.0002473/1.155, allocations: 239.8 kB / 1.437 GB, free: 7.219 MB / 1.061 GB Notification: Performance of NFFlatten.collectFunctions: time 0.005612/1.161, allocations: 3.444 MB / 1.441 GB, free: 5.32 MB / 1.061 GB Notification: Performance of NFScalarize.scalarize: time 0.0006014/1.162, allocations: 0.6889 MB / 1.441 GB, free: 4.797 MB / 1.061 GB Notification: Performance of NFVerifyModel.verify: time 0.001133/1.163, allocations: 1.194 MB / 1.442 GB, free: 3.977 MB / 1.061 GB Notification: Performance of NFConvertDAE.convert: time 0.005865/1.169, allocations: 4.747 MB / 1.447 GB, free: 15.59 MB / 1.076 GB Notification: Performance of FrontEnd - DAE generated: time 7.123e-06/1.169, allocations: 8 kB / 1.447 GB, free: 15.58 MB / 1.076 GB Notification: Performance of FrontEnd: time 1.462e-06/1.169, allocations: 0 / 1.447 GB, free: 15.58 MB / 1.076 GB Notification: Performance of Transformations before backend: time 2.377e-05/1.169, allocations: 0 / 1.447 GB, free: 15.58 MB / 1.076 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 328 * Number of variables: 328 Notification: Performance of Generate backend data structure: time 0.003836/1.172, allocations: 2.564 MB / 1.45 GB, free: 12.95 MB / 1.076 GB Notification: Performance of prepare preOptimizeDAE: time 4.441e-05/1.173, allocations: 16.03 kB / 1.45 GB, free: 12.94 MB / 1.076 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.0002104/1.173, allocations: 186.2 kB / 1.45 GB, free: 12.75 MB / 1.076 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.005893/1.179, allocations: 0.9117 MB / 1.451 GB, free: 11.83 MB / 1.076 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.003855/1.183, allocations: 2.133 MB / 1.453 GB, free: 9.645 MB / 1.076 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 8.032e-05/1.183, allocations: 102.6 kB / 1.453 GB, free: 9.543 MB / 1.076 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001972/1.183, allocations: 132 kB / 1.453 GB, free: 9.414 MB / 1.076 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.003556/1.186, allocations: 1.67 MB / 1.455 GB, free: 7.68 MB / 1.076 GB Notification: Performance of preOpt findStateOrder (simulation): time 2.848e-05/1.186, allocations: 4 kB / 1.455 GB, free: 7.676 MB / 1.076 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0001368/1.187, allocations: 52 kB / 1.455 GB, free: 7.625 MB / 1.076 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 4.544e-05/1.187, allocations: 42.5 kB / 1.455 GB, free: 7.582 MB / 1.076 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.004185/1.191, allocations: 1.536 MB / 1.456 GB, free: 6.039 MB / 1.076 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 0.01107/1.202, allocations: 7.552 MB / 1.464 GB, free: 13.97 MB / 1.092 GB Notification: Performance of preOpt comSubExp (simulation): time 0.002883/1.205, allocations: 0.713 MB / 1.464 GB, free: 13.25 MB / 1.092 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0008833/1.206, allocations: 320.6 kB / 1.465 GB, free: 12.93 MB / 1.092 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0002865/1.206, allocations: 190.2 kB / 1.465 GB, free: 12.71 MB / 1.092 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 3.139e-05/1.206, allocations: 38.5 kB / 1.465 GB, free: 12.66 MB / 1.092 GB Notification: Performance of pre-optimization done (n=36): time 2.244e-06/1.206, allocations: 3.938 kB / 1.465 GB, free: 12.66 MB / 1.092 GB Notification: Performance of matching and sorting (n=36): time 0.003882/1.21, allocations: 1.366 MB / 1.466 GB, free: 11.2 MB / 1.092 GB Notification: Performance of inlineWhenForInitialization (initialization): time 3.106e-05/1.21, allocations: 59.27 kB / 1.466 GB, free: 11.13 MB / 1.092 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.002924/1.213, allocations: 1.852 MB / 1.468 GB, free: 9.238 MB / 1.092 GB Notification: Performance of collectPreVariables (initialization): time 9.426e-05/1.213, allocations: 37.7 kB / 1.468 GB, free: 9.195 MB / 1.092 GB Notification: Performance of collectInitialEqns (initialization): time 0.0007088/1.214, allocations: 0.8327 MB / 1.469 GB, free: 8.355 MB / 1.092 GB Notification: Performance of collectInitialBindings (initialization): time 0.0001322/1.214, allocations: 138.8 kB / 1.469 GB, free: 8.219 MB / 1.092 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0002754/1.214, allocations: 146.2 kB / 1.469 GB, free: 8.066 MB / 1.092 GB Notification: Performance of setup shared object (initialization): time 0.0001234/1.214, allocations: 330 kB / 1.469 GB, free: 7.738 MB / 1.092 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.001448/1.216, allocations: 419.2 kB / 1.47 GB, free: 7.328 MB / 1.092 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.001538/1.217, allocations: 0.6415 MB / 1.47 GB, free: 6.578 MB / 1.092 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.00229/1.22, allocations: 0.8704 MB / 1.471 GB, free: 5.621 MB / 1.092 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 7.524e-06/1.22, allocations: 4 kB / 1.471 GB, free: 5.617 MB / 1.092 GB Notification: Performance of matching and sorting (n=72) (initialization): time 0.003541/1.223, allocations: 1.398 MB / 1.473 GB, free: 4.168 MB / 1.092 GB Notification: Performance of prepare postOptimizeDAE: time 1.932e-05/1.223, allocations: 9.719 kB / 1.473 GB, free: 4.16 MB / 1.092 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.127e-05/1.223, allocations: 4 kB / 1.473 GB, free: 4.156 MB / 1.092 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0001891/1.223, allocations: 57.69 kB / 1.473 GB, free: 4.094 MB / 1.092 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001181/1.225, allocations: 216 kB / 1.473 GB, free: 3.883 MB / 1.092 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.001985/1.227, allocations: 3.141 MB / 1.476 GB, free: 476 kB / 1.092 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001938/1.229, allocations: 267.6 kB / 1.476 GB, free: 208 kB / 1.092 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 7.671e-05/1.229, allocations: 31.98 kB / 1.476 GB, free: 176 kB / 1.092 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.001816/1.23, allocations: 0.7629 MB / 1.477 GB, free: 15.4 MB / 1.107 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.001347/1.232, allocations: 0.603 MB / 1.478 GB, free: 14.69 MB / 1.107 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.001951/1.234, allocations: 0.8198 MB / 1.478 GB, free: 13.79 MB / 1.107 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 3.908e-06/1.234, allocations: 0 / 1.478 GB, free: 13.79 MB / 1.107 GB Notification: Performance of matching and sorting (n=72) (initialization_lambda0): time 0.00324/1.237, allocations: 1.328 MB / 1.48 GB, free: 12.41 MB / 1.107 GB Notification: Performance of prepare postOptimizeDAE: time 1.377e-05/1.237, allocations: 8 kB / 1.48 GB, free: 12.4 MB / 1.107 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.053e-05/1.237, allocations: 11.94 kB / 1.48 GB, free: 12.39 MB / 1.107 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0001341/1.237, allocations: 61.62 kB / 1.48 GB, free: 12.32 MB / 1.107 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001083/1.238, allocations: 199.8 kB / 1.48 GB, free: 12.12 MB / 1.107 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.001973/1.24, allocations: 3.136 MB / 1.483 GB, free: 8.707 MB / 1.107 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001846/1.242, allocations: 204.1 kB / 1.483 GB, free: 8.508 MB / 1.107 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 7.248e-05/1.242, allocations: 32 kB / 1.483 GB, free: 8.477 MB / 1.107 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 28 * 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 (67): * Single equations (assignments): 64 * Array equations: 1 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 2 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 2 systems {(1,2,100.0%), (1,2,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 0 systems Notification: Performance of prepare postOptimizeDAE: time 0.0002362/1.242, allocations: 221.2 kB / 1.483 GB, free: 8.254 MB / 1.107 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0003389/1.243, allocations: 182.8 kB / 1.484 GB, free: 8.074 MB / 1.107 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.002381/1.245, allocations: 0.9614 MB / 1.485 GB, free: 7.059 MB / 1.107 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 6.072e-06/1.245, allocations: 4 kB / 1.485 GB, free: 7.055 MB / 1.107 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 3.507e-06/1.245, allocations: 0 / 1.485 GB, free: 7.055 MB / 1.107 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 5.56e-06/1.245, allocations: 3.984 kB / 1.485 GB, free: 7.051 MB / 1.107 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.003717/1.249, allocations: 2.141 MB / 1.487 GB, free: 4.793 MB / 1.107 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 3.717e-06/1.249, allocations: 0 / 1.487 GB, free: 4.793 MB / 1.107 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0007179/1.25, allocations: 108 kB / 1.487 GB, free: 4.688 MB / 1.107 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0001211/1.25, allocations: 53.77 kB / 1.487 GB, free: 4.629 MB / 1.107 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 4.096e-05/1.25, allocations: 15.98 kB / 1.487 GB, free: 4.613 MB / 1.107 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.001907/1.252, allocations: 3.142 MB / 1.49 GB, free: 1.203 MB / 1.107 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.603e-06/1.252, allocations: 0 / 1.49 GB, free: 1.203 MB / 1.107 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.002092/1.254, allocations: 1.038 MB / 1.491 GB, free: 92 kB / 1.107 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0005588/1.254, allocations: 335.7 kB / 1.491 GB, free: 15.74 MB / 1.123 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0002426/1.255, allocations: 4 kB / 1.491 GB, free: 15.74 MB / 1.123 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.001223/1.256, allocations: 103.8 kB / 1.491 GB, free: 15.64 MB / 1.123 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 5.191e-05/1.256, allocations: 27.97 kB / 1.491 GB, free: 15.61 MB / 1.123 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 4.878e-05/1.256, allocations: 19.98 kB / 1.491 GB, free: 15.59 MB / 1.123 GB Notification: Performance of sorting global known variables: time 0.002233/1.258, allocations: 1.309 MB / 1.493 GB, free: 14.26 MB / 1.123 GB Notification: Performance of sort global known variables: time 1.41e-07/1.258, allocations: 0 / 1.493 GB, free: 14.26 MB / 1.123 GB Notification: Performance of remove unused functions: time 0.002779/1.261, allocations: 0.7565 MB / 1.493 GB, free: 13.5 MB / 1.123 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 (32): * Single equations (assignments): 30 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 2 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 2 systems {(1,2,100.0%), (1,2,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 0 systems Notification: Performance of Backend phase and start with SimCode phase: time 0.003528/1.265, allocations: 1.796 MB / 1.495 GB, free: 11.62 MB / 1.123 GB Notification: Performance of simCode: created initialization part: time 0.004775/1.269, allocations: 1.727 MB / 1.497 GB, free: 9.84 MB / 1.123 GB Notification: Performance of simCode: created event and clocks part: time 5.099e-06/1.269, allocations: 4 kB / 1.497 GB, free: 9.836 MB / 1.123 GB Notification: Performance of simCode: created simulation system equations: time 0.001073/1.271, allocations: 0.5098 MB / 1.497 GB, free: 9.301 MB / 1.123 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.004673/1.275, allocations: 1.034 MB / 1.498 GB, free: 8.281 MB / 1.123 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.02211/1.297, allocations: 12.4 MB / 1.51 GB, free: 11.39 MB / 1.139 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0009968/1.298, allocations: 1.34 MB / 1.512 GB, free: 10.02 MB / 1.139 GB Notification: Performance of simCode: alias equations: time 0.001599/1.3, allocations: 375 kB / 1.512 GB, free: 9.652 MB / 1.139 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0009374/1.301, allocations: 0.6594 MB / 1.513 GB, free: 8.992 MB / 1.139 GB Notification: Performance of SimCode: time 5.91e-07/1.301, allocations: 0 / 1.513 GB, free: 8.992 MB / 1.139 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.08461/1.386, allocations: 48.93 MB / 1.561 GB, free: 8.516 MB / 1.186 GB Notification: Performance of buildModelFMU: Generate platform static: time 12.02/13.41, allocations: 6.75 kB / 1.561 GB, free: 8.512 MB / 1.186 GB (rm -f Buildings_9_Buildings.Fluid.FMI.Validation.HeaterFan.pipe ; mkfifo Buildings_9_Buildings.Fluid.FMI.Validation.HeaterFan.pipe ; head -c 1048576 < Buildings_9_Buildings.Fluid.FMI.Validation.HeaterFan.pipe >> ../files/Buildings_9_Buildings.Fluid.FMI.Validation.HeaterFan.sim & python3 -m fmpy simulate --output-file Buildings_9_Buildings.Fluid.FMI.Validation.HeaterFan_res.csv --start-time 0 --stop-time 1 --timeout 50 --relative-tolerance 1e-06 --interface-type ModelExchange --solver CVode --output-interval 0.0004 Buildings_9_Buildings_Fluid_FMI_Validation_HeaterFan.fmu > Buildings_9_Buildings.Fluid.FMI.Validation.HeaterFan.pipe 2>&1) diffSimulationResults("Buildings_9_Buildings.Fluid.FMI.Validation.HeaterFan_res.csv","/mnt/ReferenceFiles/Buildings/csv/maint_9.1.x/Buildings_Fluid_FMI_Validation_HeaterFan.csv","/var/lib/jenkins1/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/files/Buildings_9_Buildings.Fluid.FMI.Validation.HeaterFan.diff",relTol=0.003,relTolDiffMinMax=0.003,rangeDelta=0.001) Reference file matches