Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctColdDuctMin.Subsequences.Validation.Overrides.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: translateModel(Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctColdDuctMin.Subsequences.Validation.Overrides,tolerance=1e-06,outputFormat="mat",numberOfIntervals=5000,variableFilter="time|ove.oveFloSet|ove.VActSet_flow|ove.VMin_flow|ove.VCooMax_flow|ove.VSet_flow|ove.oveCooDamPos|ove.uCooDam|ove.yCooDam|ove.oveHeaDamPos|ove.uHeaDam|ove.yHeaDam",fileNamePrefix="Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctColdDuctMin.Subsequences.Validation.Overrides")
translateModel(Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctColdDuctMin.Subsequences.Validation.Overrides,tolerance=1e-06,outputFormat="mat",numberOfIntervals=5000,variableFilter="time|ove.oveFloSet|ove.VActSet_flow|ove.VMin_flow|ove.VCooMax_flow|ove.VSet_flow|ove.oveCooDamPos|ove.uCooDam|ove.yCooDam|ove.oveHeaDamPos|ove.uHeaDam|ove.yHeaDam",fileNamePrefix="Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctColdDuctMin.Subsequences.Validation.Overrides")
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001388/0.001389, allocations: 108 kB / 15.6 MB, free: 132 kB / 14.72 MB
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001854/0.001854, allocations: 193.9 kB / 16.53 MB, free: 6.391 MB / 14.72 MB
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.51/1.51, allocations: 222.9 MB / 240.2 MB, free: 4.379 MB / 190.1 MB
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 12.0.0-master/package.mo): time 3.141/3.141, allocations: 472.7 MB / 0.7452 GB, free: 4.621 MB / 0.5919 GB
Notification: Performance of FrontEnd - loaded program: time 0.001272/0.001272, allocations: 68.91 kB / 0.9121 GB, free: 33.32 MB / 0.7169 GB
Notification: Performance of FrontEnd - Absyn->SCode: time 0.4217/0.423, allocations: 159.9 MB / 1.068 GB, free: 10.34 MB / 0.8262 GB
Notification: Performance of NFInst.instantiate(Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctColdDuctMin.Subsequences.Validation.Overrides): time 0.004183/0.4272, allocations: 1.752 MB / 1.07 GB, free: 8.586 MB / 0.8262 GB
Notification: Performance of NFInst.instExpressions: time 0.001798/0.4291, allocations: 1.163 MB / 1.071 GB, free: 7.41 MB / 0.8262 GB
Notification: Performance of NFInst.updateImplicitVariability: time 0.000199/0.4293, allocations: 8 kB / 1.071 GB, free: 7.402 MB / 0.8262 GB
Notification: Performance of NFTyping.typeComponents: time 0.000146/0.4294, allocations: 55.27 kB / 1.071 GB, free: 7.348 MB / 0.8262 GB
Notification: Performance of NFTyping.typeBindings: time 0.0002142/0.4297, allocations: 51.34 kB / 1.071 GB, free: 7.297 MB / 0.8262 GB
Notification: Performance of NFTyping.typeClassSections: time 0.0003759/0.4301, allocations: 187.7 kB / 1.071 GB, free: 7.113 MB / 0.8262 GB
Notification: Performance of NFFlatten.flatten: time 0.0004364/0.4305, allocations: 0.501 MB / 1.072 GB, free: 6.613 MB / 0.8262 GB
Notification: Performance of NFFlatten.resolveConnections: time 0.0004594/0.431, allocations: 280.7 kB / 1.072 GB, free: 6.332 MB / 0.8262 GB
Notification: Performance of NFEvalConstants.evaluate: time 0.0002262/0.4312, allocations: 207.2 kB / 1.072 GB, free: 6.129 MB / 0.8262 GB
Notification: Performance of NFSimplifyModel.simplify: time 0.000236/0.4315, allocations: 230.9 kB / 1.073 GB, free: 5.902 MB / 0.8262 GB
Notification: Performance of NFPackage.collectConstants: time 8.308e-05/0.4316, allocations: 60 kB / 1.073 GB, free: 5.844 MB / 0.8262 GB
Notification: Performance of NFFlatten.collectFunctions: time 8.043e-05/0.4317, allocations: 60 kB / 1.073 GB, free: 5.785 MB / 0.8262 GB
Notification: Performance of NFScalarize.scalarize: time 0.0001027/0.4318, allocations: 127.6 kB / 1.073 GB, free: 5.66 MB / 0.8262 GB
Notification: Performance of NFVerifyModel.verify: time 0.0002027/0.432, allocations: 242.7 kB / 1.073 GB, free: 5.422 MB / 0.8262 GB
Notification: Performance of NFConvertDAE.convert: time 0.00071/0.4327, allocations: 0.6621 MB / 1.074 GB, free: 4.758 MB / 0.8262 GB
Notification: Performance of FrontEnd - DAE generated: time 6.863e-06/0.4327, allocations: 0 / 1.074 GB, free: 4.758 MB / 0.8262 GB
Notification: Performance of FrontEnd: time 1.893e-06/0.4327, allocations: 3.938 kB / 1.074 GB, free: 4.754 MB / 0.8262 GB
Notification: Performance of Transformations before backend: time 1.107e-05/0.4327, allocations: 0 / 1.074 GB, free: 4.754 MB / 0.8262 GB
Notification: Model statistics after passing the front-end and creating the data structures used by the back-end:
 * Number of equations: 117
 * Number of variables: 117
Notification: Performance of Generate backend data structure: time 0.001508/0.4342, allocations: 0.7601 MB / 1.074 GB, free: 3.941 MB / 0.8262 GB
Notification: Performance of prepare preOptimizeDAE: time 5.374e-05/0.4343, allocations: 12.03 kB / 1.074 GB, free: 3.93 MB / 0.8262 GB
Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0001063/0.4344, allocations: 52.28 kB / 1.075 GB, free: 3.879 MB / 0.8262 GB
Notification: Performance of preOpt evaluateParameters (simulation): time 0.001163/0.4356, allocations: 495.9 kB / 1.075 GB, free: 3.355 MB / 0.8262 GB
Notification: Performance of preOpt simplifyIfEquations (simulation): time 4.116e-05/0.4356, allocations: 37.38 kB / 1.075 GB, free: 3.32 MB / 0.8262 GB
Notification: Performance of preOpt expandDerOperator (simulation): time 6.938e-05/0.4357, allocations: 48.38 kB / 1.075 GB, free: 3.273 MB / 0.8262 GB
Notification: Performance of preOpt clockPartitioning (simulation): time 0.001023/0.4367, allocations: 0.4986 MB / 1.076 GB, free: 2.762 MB / 0.8262 GB
Notification: Performance of preOpt findStateOrder (simulation): time 1.201e-05/0.4368, allocations: 192 / 1.076 GB, free: 2.762 MB / 0.8262 GB
Notification: Performance of preOpt replaceEdgeChange (simulation): time 4.479e-05/0.4368, allocations: 23.94 kB / 1.076 GB, free: 2.738 MB / 0.8262 GB
Notification: Performance of preOpt inlineArrayEqn (simulation): time 1.373e-05/0.4368, allocations: 12 kB / 1.076 GB, free: 2.727 MB / 0.8262 GB
Notification: Performance of preOpt removeEqualRHS (simulation): time 0.001264/0.4381, allocations: 430.4 kB / 1.076 GB, free: 2.305 MB / 0.8262 GB
Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.001742/0.4399, allocations: 1.255 MB / 1.077 GB, free: 0.9883 MB / 0.8262 GB
Notification: Performance of preOpt comSubExp (simulation): time 0.0009521/0.4408, allocations: 403.8 kB / 1.078 GB, free: 0.5664 MB / 0.8262 GB
Notification: Performance of preOpt resolveLoops (simulation): time 0.0005959/0.4414, allocations: 222.4 kB / 1.078 GB, free: 348 kB / 0.8262 GB
Notification: Performance of preOpt evalFunc (simulation): time 4.688e-05/0.4415, allocations: 15.98 kB / 1.078 GB, free: 332 kB / 0.8262 GB
Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 4.209e-05/0.4415, allocations: 38.5 kB / 1.078 GB, free: 284 kB / 0.8262 GB
Notification: Performance of pre-optimization done (n=41): time 2.255e-06/0.4416, allocations: 0 / 1.078 GB, free: 284 kB / 0.8262 GB
Notification: Performance of matching and sorting (n=41): time 0.001886/0.4434, allocations: 0.577 MB / 1.078 GB, free: 15.69 MB / 0.8419 GB
Notification: Performance of inlineWhenForInitialization (initialization): time 7.016e-05/0.4435, allocations: 110.8 kB / 1.079 GB, free: 15.56 MB / 0.8419 GB
Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0002784/0.4438, allocations: 282.7 kB / 1.079 GB, free: 15.27 MB / 0.8419 GB
Notification: Performance of collectPreVariables (initialization): time 2.913e-05/0.4438, allocations: 29.7 kB / 1.079 GB, free: 15.24 MB / 0.8419 GB
Notification: Performance of collectInitialEqns (initialization): time 0.0001469/0.444, allocations: 224.2 kB / 1.079 GB, free: 15.02 MB / 0.8419 GB
Notification: Performance of collectInitialBindings (initialization): time 0.0001024/0.4441, allocations: 114.4 kB / 1.079 GB, free: 14.9 MB / 0.8419 GB
Notification: Performance of simplifyInitialFunctions (initialization): time 0.00014/0.4443, allocations: 98.11 kB / 1.079 GB, free: 14.8 MB / 0.8419 GB
Notification: Performance of setup shared object (initialization): time 0.0001449/0.4444, allocations: 346.8 kB / 1.08 GB, free: 14.45 MB / 0.8419 GB
Notification: Performance of preBalanceInitialSystem (initialization): time 0.0005429/0.445, allocations: 156.7 kB / 1.08 GB, free: 14.3 MB / 0.8419 GB
Notification: Performance of partitionIndependentBlocks (initialization): time 0.0005949/0.4456, allocations: 257.5 kB / 1.08 GB, free: 14.02 MB / 0.8419 GB
Notification: Performance of analyzeInitialSystem (initialization): time 0.001122/0.4467, allocations: 394.9 kB / 1.08 GB, free: 13.6 MB / 0.8419 GB
Notification: Performance of solveInitialSystemEqSystem (initialization): time 3.396e-06/0.4467, allocations: 4 kB / 1.08 GB, free: 13.59 MB / 0.8419 GB
Notification: Performance of matching and sorting (n=49) (initialization): time 0.001272/0.448, allocations: 473.5 kB / 1.081 GB, free: 13.12 MB / 0.8419 GB
Notification: Performance of prepare postOptimizeDAE: time 2.291e-05/0.448, allocations: 8 kB / 1.081 GB, free: 13.12 MB / 0.8419 GB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 9.047e-06/0.448, allocations: 0 / 1.081 GB, free: 13.12 MB / 0.8419 GB
Notification: Performance of postOpt tearingSystem (initialization): time 1.829e-05/0.4481, allocations: 4 kB / 1.081 GB, free: 13.11 MB / 0.8419 GB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0005013/0.4486, allocations: 100 kB / 1.081 GB, free: 13.02 MB / 0.8419 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 1.259e-05/0.4486, allocations: 11.94 kB / 1.081 GB, free: 13 MB / 0.8419 GB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0003321/0.4489, allocations: 63.64 kB / 1.081 GB, free: 12.94 MB / 0.8419 GB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 2.928e-05/0.449, allocations: 19.92 kB / 1.081 GB, free: 12.92 MB / 0.8419 GB
Notification: Model statistics after passing the back-end for initialization:
 * Number of independent subsystems: 11
 * Number of states: 0 ()
 * Number of discrete variables: 24 (reaToInt2.y,ove.or5.y,ove.or1.y,ove.forMinFlo1.y,ove.or3.y,ove.forMinFlo.y,ove.forCooMax.y,ove.forZerFlo.y,reaToInt1.y,ove.or2.y,ove.intEqu4.y,ove.intEqu3.y,reaToInt3.y,ove.or4.y,ove.intEqu2.y,ove.intEqu1.y,ove.conInt7.y,ove.conInt6.y,ove.conInt4.y,ove.conInt3.y,ove.conInt5.y,ove.conInt2.y,ove.conInt1.y,ove.conInt.y)
 * Number of discrete states: 0 ()
 * Number of clocked states: 0 ()
 * Top-level inputs: 0
Notification: Strong component statistics for initialization (49):
 * Single equations (assignments): 49
 * Array equations: 0
 * Algorithm blocks: 0
 * Record equations: 0
 * When equations: 0
 * If-equations: 0
 * Equation systems (not torn): 0
 * Torn equation systems: 0
 * Mixed (continuous/discrete) equation systems: 0
Notification: Performance of prepare postOptimizeDAE: time 0.0002803/0.4493, allocations: 175.2 kB / 1.081 GB, free: 12.74 MB / 0.8419 GB
Notification: Performance of postOpt lateInlineFunction (simulation): time 0.000109/0.4494, allocations: 35.62 kB / 1.081 GB, free: 12.71 MB / 0.8419 GB
Notification: Performance of postOpt wrapFunctionCalls (simulation): time 9.019e-05/0.4495, allocations: 42.2 kB / 1.081 GB, free: 12.66 MB / 0.8419 GB
Notification: Performance of postOpt inlineArrayEqn (simulation): time 7.855e-06/0.4495, allocations: 7.938 kB / 1.081 GB, free: 12.66 MB / 0.8419 GB
Notification: Performance of postOpt constantLinearSystem (simulation): time 9.317e-06/0.4495, allocations: 0 / 1.081 GB, free: 12.66 MB / 0.8419 GB
Notification: Performance of postOpt simplifysemiLinear (simulation): time 7.865e-06/0.4495, allocations: 7.984 kB / 1.081 GB, free: 12.65 MB / 0.8419 GB
Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.0006472/0.4502, allocations: 461 kB / 1.082 GB, free: 12.15 MB / 0.8419 GB
Notification: Performance of postOpt simplifyComplexFunction (simulation): time 2.685e-06/0.4502, allocations: 0 / 1.082 GB, free: 12.15 MB / 0.8419 GB
Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0004216/0.4506, allocations: 87.86 kB / 1.082 GB, free: 12.06 MB / 0.8419 GB
Notification: Performance of postOpt tearingSystem (simulation): time 6.142e-06/0.4506, allocations: 4 kB / 1.082 GB, free: 12.06 MB / 0.8419 GB
Notification: Performance of postOpt inputDerivativesUsed (simulation): time 2.901e-05/0.4506, allocations: 7.984 kB / 1.082 GB, free: 12.05 MB / 0.8419 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 6.412e-06/0.4507, allocations: 11.88 kB / 1.082 GB, free: 12.04 MB / 0.8419 GB
Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.443e-06/0.4507, allocations: 0 / 1.082 GB, free: 12.04 MB / 0.8419 GB
Notification: Performance of postOpt symbolicJacobian (simulation): time 0.001303/0.452, allocations: 0.6625 MB / 1.082 GB, free: 11.36 MB / 0.8419 GB
Notification: Performance of postOpt removeConstants (simulation): time 8.933e-05/0.4521, allocations: 112.6 kB / 1.083 GB, free: 11.23 MB / 0.8419 GB
Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 4.661e-05/0.4521, allocations: 12 kB / 1.083 GB, free: 11.22 MB / 0.8419 GB
Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0003672/0.4525, allocations: 43.88 kB / 1.083 GB, free: 11.18 MB / 0.8419 GB
Notification: Performance of postOpt findZeroCrossings (simulation): time 0.000158/0.4527, allocations: 55.94 kB / 1.083 GB, free: 11.12 MB / 0.8419 GB
Notification: Performance of postOpt collapseArrayExpressions (simulation): time 2.5e-05/0.4527, allocations: 12 kB / 1.083 GB, free: 11.11 MB / 0.8419 GB
Notification: Performance of sorting global known variables: time 0.0001759/0.4529, allocations: 182 kB / 1.083 GB, free: 10.93 MB / 0.8419 GB
Notification: Performance of sort global known variables: time 3.396e-06/0.4529, allocations: 0 / 1.083 GB, free: 10.93 MB / 0.8419 GB
Notification: Performance of remove unused functions: time 0.0004669/0.4534, allocations: 91.53 kB / 1.083 GB, free: 10.84 MB / 0.8419 GB
Notification: Model statistics after passing the back-end for simulation:
 * Number of independent subsystems: 3
 * Number of states: 0 ()
 * Number of discrete variables: 16 (ove.forZerFlo.y,ove.forCooMax.y,ove.forMinFlo.y,ove.or3.y,ove.forMinFlo1.y,ove.or1.y,ove.or5.y,reaToInt2.y,ove.intEqu3.y,ove.intEqu4.y,ove.or2.y,reaToInt1.y,ove.intEqu1.y,ove.intEqu2.y,ove.or4.y,reaToInt3.y)
 * Number of discrete states: 0 ()
 * Number of clocked states: 0 ()
 * Top-level inputs: 0
Notification: Strong component statistics for simulation (41):
 * Single equations (assignments): 41
 * Array equations: 0
 * Algorithm blocks: 0
 * Record equations: 0
 * When equations: 0
 * If-equations: 0
 * Equation systems (not torn): 0
 * Torn equation systems: 0
 * Mixed (continuous/discrete) equation systems: 0
Notification: Performance of Backend phase and start with SimCode phase: time 0.0002016/0.4536, allocations: 123.2 kB / 1.083 GB, free: 10.71 MB / 0.8419 GB
Notification: Performance of simCode: created initialization part: time 0.001374/0.455, allocations: 435.1 kB / 1.083 GB, free: 10.29 MB / 0.8419 GB
Notification: Performance of simCode: created event and clocks part: time 4.097e-06/0.455, allocations: 0.5 kB / 1.083 GB, free: 10.29 MB / 0.8419 GB
Notification: Performance of simCode: created simulation system equations: time 0.0006663/0.4556, allocations: 239.7 kB / 1.084 GB, free: 10.06 MB / 0.8419 GB
Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.0005654/0.4562, allocations: 52.84 kB / 1.084 GB, free: 10 MB / 0.8419 GB
Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.001248/0.4575, allocations: 0.6915 MB / 1.084 GB, free: 9.281 MB / 0.8419 GB
Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0004601/0.458, allocations: 0.8192 MB / 1.085 GB, free: 8.434 MB / 0.8419 GB
Notification: Performance of simCode: alias equations: time 0.0002572/0.4582, allocations: 55.28 kB / 1.085 GB, free: 8.383 MB / 0.8419 GB
Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0001161/0.4583, allocations: 43.42 kB / 1.085 GB, free: 8.34 MB / 0.8419 GB
Notification: Performance of SimCode: time 4.61e-07/0.4584, allocations: 0 / 1.085 GB, free: 8.34 MB / 0.8419 GB
Notification: Performance of Templates: time 0.009393/0.4677, allocations: 3.905 MB / 1.089 GB, free: 4.5 MB / 0.8419 GB
make -j1 -f Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctColdDuctMin.Subsequences.Validation.Overrides.makefile
(rm -f Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctColdDuctMin.Subsequences.Validation.Overrides.pipe ; mkfifo Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctColdDuctMin.Subsequences.Validation.Overrides.pipe ; head -c 1048576 < Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctColdDuctMin.Subsequences.Validation.Overrides.pipe >> ../files/Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctColdDuctMin.Subsequences.Validation.Overrides.sim & ./Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctColdDuctMin.Subsequences.Validation.Overrides  -abortSlowSimulation -alarm=480  -emit_protected -lv LOG_STATS > Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctColdDuctMin.Subsequences.Validation.Overrides.pipe 2>&1)
diffSimulationResults("Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctColdDuctMin.Subsequences.Validation.Overrides_res.mat","/mnt/ReferenceFiles/Buildings/csv/master/Buildings_Controls_OBC_ASHRAE_G36_TerminalUnits_DualDuctColdDuctMin_Subsequences_Validation_Overrides.csv","/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/files/Buildings_latest_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctColdDuctMin.Subsequences.Validation.Overrides.diff",relTol=0.003,relTolDiffMinMax=0.003,rangeDelta=0.001)
Reference file matches