Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_10_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 10.1.0-maint.10.0.x/package.mo", uses=false)
Using package Buildings with version 10.1.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 10.1.0-maint.10.0.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.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_10_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_10_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 0.001631/0.001632, allocations: 103.4 kB / 16.35 MB, free: 6.289 MB / 14.72 MB
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001678/0.001678, allocations: 193.5 kB / 17.29 MB, free: 5.855 MB / 14.72 MB
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.423/1.423, allocations: 222.9 MB / 241 MB, free: 15.18 MB / 206.1 MB
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 10.1.0-maint.10.0.x/package.mo): time 2.601/2.601, allocations: 437.1 MB / 0.7112 GB, free: 4.328 MB / 0.5762 GB
Notification: Performance of FrontEnd - loaded program: time 0.001226/0.001226, allocations: 61.28 kB / 0.8707 GB, free: 1.367 MB / 0.6387 GB
Notification: Performance of FrontEnd - Absyn->SCode: time 0.3509/0.3521, allocations: 151.6 MB / 1.019 GB, free: 9.77 MB / 0.795 GB
Notification: Performance of NFInst.instantiate(Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctColdDuctMin.Subsequences.Validation.Overrides): time 0.003023/0.3552, allocations: 1.768 MB / 1.021 GB, free: 7.992 MB / 0.795 GB
Notification: Performance of NFInst.instExpressions: time 0.001331/0.3565, allocations: 1.151 MB / 1.022 GB, free: 6.828 MB / 0.795 GB
Notification: Performance of NFInst.updateImplicitVariability: time 0.0001313/0.3567, allocations: 8 kB / 1.022 GB, free: 6.82 MB / 0.795 GB
Notification: Performance of NFTyping.typeComponents: time 0.0001091/0.3568, allocations: 51.33 kB / 1.022 GB, free: 6.77 MB / 0.795 GB
Notification: Performance of NFTyping.typeBindings: time 0.0001833/0.357, allocations: 59.34 kB / 1.022 GB, free: 6.711 MB / 0.795 GB
Notification: Performance of NFTyping.typeClassSections: time 0.0003402/0.3573, allocations: 183.7 kB / 1.022 GB, free: 6.531 MB / 0.795 GB
Notification: Performance of NFFlatten.flatten: time 0.0004248/0.3578, allocations: 0.4963 MB / 1.022 GB, free: 6.035 MB / 0.795 GB
Notification: Performance of NFFlatten.resolveConnections: time 0.0004194/0.3582, allocations: 280.6 kB / 1.023 GB, free: 5.758 MB / 0.795 GB
Notification: Performance of NFEvalConstants.evaluate: time 0.0001952/0.3584, allocations: 203.2 kB / 1.023 GB, free: 5.559 MB / 0.795 GB
Notification: Performance of NFSimplifyModel.simplify: time 0.000203/0.3586, allocations: 234.9 kB / 1.023 GB, free: 5.328 MB / 0.795 GB
Notification: Performance of NFPackage.collectConstants: time 7.216e-05/0.3587, allocations: 60 kB / 1.023 GB, free: 5.27 MB / 0.795 GB
Notification: Performance of NFFlatten.collectFunctions: time 5.654e-05/0.3587, allocations: 56 kB / 1.023 GB, free: 5.215 MB / 0.795 GB
Notification: Performance of NFScalarize.scalarize: time 9.332e-05/0.3588, allocations: 123.6 kB / 1.023 GB, free: 5.094 MB / 0.795 GB
Notification: Performance of NFVerifyModel.verify: time 0.0001839/0.359, allocations: 234.7 kB / 1.024 GB, free: 4.863 MB / 0.795 GB
Notification: Performance of NFConvertDAE.convert: time 0.0005723/0.3596, allocations: 0.681 MB / 1.024 GB, free: 4.18 MB / 0.795 GB
Notification: Performance of FrontEnd - DAE generated: time 4.349e-06/0.3596, allocations: 0 / 1.024 GB, free: 4.18 MB / 0.795 GB
Notification: Performance of FrontEnd: time 1.492e-06/0.3596, allocations: 4 kB / 1.024 GB, free: 4.176 MB / 0.795 GB
Notification: Performance of Transformations before backend: time 9.017e-06/0.3596, allocations: 4 kB / 1.024 GB, free: 4.172 MB / 0.795 GB
Notification: Model statistics after passing the front-end and creating the data structures used by the back-end:
 * Number of equations: 115
 * Number of variables: 115
Notification: Performance of Generate backend data structure: time 0.001252/0.3609, allocations: 0.7601 MB / 1.025 GB, free: 3.359 MB / 0.795 GB
Notification: Performance of prepare preOptimizeDAE: time 3.676e-05/0.3609, allocations: 8.922 kB / 1.025 GB, free: 3.352 MB / 0.795 GB
Notification: Performance of preOpt normalInlineFunction (simulation): time 8.727e-05/0.361, allocations: 52.28 kB / 1.025 GB, free: 3.301 MB / 0.795 GB
Notification: Performance of preOpt evaluateParameters (simulation): time 0.00109/0.3621, allocations: 488 kB / 1.026 GB, free: 2.781 MB / 0.795 GB
Notification: Performance of preOpt simplifyIfEquations (simulation): time 4.229e-05/0.3622, allocations: 45.31 kB / 1.026 GB, free: 2.738 MB / 0.795 GB
Notification: Performance of preOpt expandDerOperator (simulation): time 5.98e-05/0.3623, allocations: 44.38 kB / 1.026 GB, free: 2.695 MB / 0.795 GB
Notification: Performance of preOpt clockPartitioning (simulation): time 0.001067/0.3633, allocations: 498.3 kB / 1.026 GB, free: 2.191 MB / 0.795 GB
Notification: Performance of preOpt findStateOrder (simulation): time 1.375e-05/0.3634, allocations: 4.188 kB / 1.026 GB, free: 2.188 MB / 0.795 GB
Notification: Performance of preOpt replaceEdgeChange (simulation): time 4.668e-05/0.3634, allocations: 23.92 kB / 1.026 GB, free: 2.164 MB / 0.795 GB
Notification: Performance of preOpt inlineArrayEqn (simulation): time 1.255e-05/0.3634, allocations: 12 kB / 1.026 GB, free: 2.152 MB / 0.795 GB
Notification: Performance of preOpt removeEqualRHS (simulation): time 0.00113/0.3646, allocations: 433.3 kB / 1.027 GB, free: 1.727 MB / 0.795 GB
Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.001597/0.3662, allocations: 1.219 MB / 1.028 GB, free: 460 kB / 0.795 GB
Notification: Performance of preOpt comSubExp (simulation): time 0.0008534/0.367, allocations: 399.8 kB / 1.028 GB, free: 32 kB / 0.795 GB
Notification: Performance of preOpt resolveLoops (simulation): time 0.0005574/0.3676, allocations: 222.3 kB / 1.028 GB, free: 15.8 MB / 0.8106 GB
Notification: Performance of preOpt evalFunc (simulation): time 4.325e-05/0.3677, allocations: 4 kB / 1.028 GB, free: 15.8 MB / 0.8106 GB
Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 2.885e-05/0.3677, allocations: 42.5 kB / 1.028 GB, free: 15.75 MB / 0.8106 GB
Notification: Performance of pre-optimization done (n=40): time 1.623e-06/0.3677, allocations: 0 / 1.028 GB, free: 15.75 MB / 0.8106 GB
Notification: Performance of matching and sorting (n=40): time 0.001704/0.3694, allocations: 0.5707 MB / 1.029 GB, free: 15.18 MB / 0.8106 GB
Notification: Performance of inlineWhenForInitialization (initialization): time 6.103e-05/0.3695, allocations: 114.7 kB / 1.029 GB, free: 15.04 MB / 0.8106 GB
Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0002681/0.3698, allocations: 286.6 kB / 1.029 GB, free: 14.75 MB / 0.8106 GB
Notification: Performance of collectPreVariables (initialization): time 2.977e-05/0.3698, allocations: 29.7 kB / 1.029 GB, free: 14.71 MB / 0.8106 GB
Notification: Performance of collectInitialEqns (initialization): time 0.0001247/0.3699, allocations: 216.3 kB / 1.03 GB, free: 14.5 MB / 0.8106 GB
Notification: Performance of collectInitialBindings (initialization): time 8.548e-05/0.37, allocations: 118.3 kB / 1.03 GB, free: 14.38 MB / 0.8106 GB
Notification: Performance of simplifyInitialFunctions (initialization): time 0.0001195/0.3701, allocations: 94.11 kB / 1.03 GB, free: 14.29 MB / 0.8106 GB
Notification: Performance of setup shared object (initialization): time 0.0001064/0.3703, allocations: 346.8 kB / 1.03 GB, free: 13.94 MB / 0.8106 GB
Notification: Performance of preBalanceInitialSystem (initialization): time 0.0004841/0.3707, allocations: 160.7 kB / 1.03 GB, free: 13.78 MB / 0.8106 GB
Notification: Performance of partitionIndependentBlocks (initialization): time 0.0005182/0.3713, allocations: 245.6 kB / 1.03 GB, free: 13.51 MB / 0.8106 GB
Notification: Performance of analyzeInitialSystem (initialization): time 0.0009829/0.3723, allocations: 397 kB / 1.031 GB, free: 13.09 MB / 0.8106 GB
Notification: Performance of solveInitialSystemEqSystem (initialization): time 2.725e-06/0.3723, allocations: 0 / 1.031 GB, free: 13.09 MB / 0.8106 GB
Notification: Performance of matching and sorting (n=48) (initialization): time 0.001166/0.3734, allocations: 467.6 kB / 1.031 GB, free: 12.62 MB / 0.8106 GB
Notification: Performance of prepare postOptimizeDAE: time 1.658e-05/0.3735, allocations: 11.94 kB / 1.031 GB, free: 12.61 MB / 0.8106 GB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.596e-05/0.3735, allocations: 0 / 1.031 GB, free: 12.61 MB / 0.8106 GB
Notification: Performance of postOpt tearingSystem (initialization): time 2.603e-05/0.3735, allocations: 4 kB / 1.031 GB, free: 12.61 MB / 0.8106 GB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0004677/0.374, allocations: 100.1 kB / 1.031 GB, free: 12.51 MB / 0.8106 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 1.253e-05/0.374, allocations: 11.88 kB / 1.031 GB, free: 12.5 MB / 0.8106 GB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0002892/0.3743, allocations: 63.62 kB / 1.031 GB, free: 12.44 MB / 0.8106 GB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 2.917e-05/0.3744, allocations: 16 kB / 1.031 GB, free: 12.42 MB / 0.8106 GB
Notification: Model statistics after passing the back-end for initialization:
 * Number of independent subsystems: 11
 * Number of states: 0 ()
 * Number of discrete variables: 23 (reaToInt2.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 (48):
 * Single equations (assignments): 48
 * 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 0.0002127/0.3746, allocations: 174.4 kB / 1.032 GB, free: 12.24 MB / 0.8106 GB
Notification: Performance of postOpt lateInlineFunction (simulation): time 9.014e-05/0.3747, allocations: 31.62 kB / 1.032 GB, free: 12.21 MB / 0.8106 GB
Notification: Performance of postOpt wrapFunctionCalls (simulation): time 8.361e-05/0.3748, allocations: 42.2 kB / 1.032 GB, free: 12.17 MB / 0.8106 GB
Notification: Performance of postOpt inlineArrayEqn (simulation): time 6.522e-06/0.3748, allocations: 4 kB / 1.032 GB, free: 12.16 MB / 0.8106 GB
Notification: Performance of postOpt constantLinearSystem (simulation): time 9.007e-06/0.3748, allocations: 3.938 kB / 1.032 GB, free: 12.16 MB / 0.8106 GB
Notification: Performance of postOpt simplifysemiLinear (simulation): time 6.021e-06/0.3748, allocations: 3.984 kB / 1.032 GB, free: 12.16 MB / 0.8106 GB
Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.0005571/0.3754, allocations: 453.1 kB / 1.032 GB, free: 11.66 MB / 0.8106 GB
Notification: Performance of postOpt simplifyComplexFunction (simulation): time 2.214e-06/0.3754, allocations: 0 / 1.032 GB, free: 11.66 MB / 0.8106 GB
Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0003987/0.3758, allocations: 87.86 kB / 1.032 GB, free: 11.58 MB / 0.8106 GB
Notification: Performance of postOpt tearingSystem (simulation): time 4.539e-06/0.3758, allocations: 4 kB / 1.032 GB, free: 11.57 MB / 0.8106 GB
Notification: Performance of postOpt inputDerivativesUsed (simulation): time 2.511e-05/0.3758, allocations: 8 kB / 1.032 GB, free: 11.57 MB / 0.8106 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 4.057e-06/0.3758, allocations: 3.938 kB / 1.032 GB, free: 11.56 MB / 0.8106 GB
Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 4.068e-06/0.3758, allocations: 7.938 kB / 1.032 GB, free: 11.55 MB / 0.8106 GB
Notification: Performance of postOpt symbolicJacobian (simulation): time 0.001166/0.377, allocations: 0.6617 MB / 1.033 GB, free: 10.88 MB / 0.8106 GB
Notification: Performance of postOpt removeConstants (simulation): time 6.785e-05/0.3771, allocations: 108.7 kB / 1.033 GB, free: 10.75 MB / 0.8106 GB
Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 5.166e-05/0.3771, allocations: 8 kB / 1.033 GB, free: 10.74 MB / 0.8106 GB
Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0003626/0.3775, allocations: 35.95 kB / 1.033 GB, free: 10.71 MB / 0.8106 GB
Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001586/0.3777, allocations: 63.86 kB / 1.033 GB, free: 10.64 MB / 0.8106 GB
Notification: Performance of postOpt collapseArrayExpressions (simulation): time 2.547e-05/0.3777, allocations: 16 kB / 1.033 GB, free: 10.63 MB / 0.8106 GB
Notification: Performance of sorting global known variables: time 0.0001389/0.3779, allocations: 178 kB / 1.033 GB, free: 10.45 MB / 0.8106 GB
Notification: Performance of sort global known variables: time 1.372e-06/0.3779, allocations: 0 / 1.033 GB, free: 10.45 MB / 0.8106 GB
Notification: Performance of remove unused functions: time 0.0004512/0.3783, allocations: 99.47 kB / 1.033 GB, free: 10.36 MB / 0.8106 GB
Notification: Model statistics after passing the back-end for simulation:
 * Number of independent subsystems: 3
 * Number of states: 0 ()
 * Number of discrete variables: 15 (ove.forZerFlo.y,ove.forCooMax.y,ove.forMinFlo.y,ove.or3.y,ove.forMinFlo1.y,ove.or1.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 (40):
 * Single equations (assignments): 40
 * 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 0.0001495/0.3785, allocations: 121.3 kB / 1.034 GB, free: 10.23 MB / 0.8106 GB
Notification: Performance of simCode: created initialization part: time 0.001131/0.3796, allocations: 408 kB / 1.034 GB, free: 9.832 MB / 0.8106 GB
Notification: Performance of simCode: created event and clocks part: time 2.405e-06/0.3796, allocations: 7.938 kB / 1.034 GB, free: 9.824 MB / 0.8106 GB
Notification: Performance of simCode: created simulation system equations: time 0.0005991/0.3802, allocations: 235.6 kB / 1.034 GB, free: 9.594 MB / 0.8106 GB
Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.0005396/0.3808, allocations: 56.47 kB / 1.034 GB, free: 9.539 MB / 0.8106 GB
Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.001085/0.3819, allocations: 0.6653 MB / 1.035 GB, free: 8.844 MB / 0.8106 GB
Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0003189/0.3822, allocations: 0.8115 MB / 1.036 GB, free: 8.004 MB / 0.8106 GB
Notification: Performance of simCode: alias equations: time 0.0002062/0.3824, allocations: 54.94 kB / 1.036 GB, free: 7.949 MB / 0.8106 GB
Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0001219/0.3826, allocations: 47.42 kB / 1.036 GB, free: 7.902 MB / 0.8106 GB
Notification: Performance of SimCode: time 3.5e-07/0.3826, allocations: 0 / 1.036 GB, free: 7.902 MB / 0.8106 GB
Notification: Performance of Templates: time 0.007562/0.3901, allocations: 3.872 MB / 1.04 GB, free: 4.102 MB / 0.8106 GB
make -j1 -f Buildings_10_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctColdDuctMin.Subsequences.Validation.Overrides.makefile
(rm -f Buildings_10_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctColdDuctMin.Subsequences.Validation.Overrides.pipe ; mkfifo Buildings_10_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctColdDuctMin.Subsequences.Validation.Overrides.pipe ; head -c 1048576 < Buildings_10_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctColdDuctMin.Subsequences.Validation.Overrides.pipe >> ../files/Buildings_10_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctColdDuctMin.Subsequences.Validation.Overrides.sim & ./Buildings_10_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctColdDuctMin.Subsequences.Validation.Overrides  -abortSlowSimulation -alarm=480 -s cvode -emit_protected -lv LOG_STATS > Buildings_10_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctColdDuctMin.Subsequences.Validation.Overrides.pipe 2>&1)
diffSimulationResults("Buildings_10_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctColdDuctMin.Subsequences.Validation.Overrides_res.mat","/mnt/ReferenceFiles/Buildings/csv/maint_10.0.x/Buildings_Controls_OBC_ASHRAE_G36_TerminalUnits_DualDuctColdDuctMin_Subsequences_Validation_Overrides.csv","/var/lib/jenkins1/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/files/Buildings_10_Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.DualDuctColdDuctMin.Subsequences.Validation.Overrides.diff",relTol=0.003,relTolDiffMinMax=0.003,rangeDelta=0.001)
Reference file matches