Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr ModelicaTest_4.0.0_ModelicaTest.Fluid.Dissipation.Verifications.HeatTransfer.Plate.kc_turbulent_KC.conf.json
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/ModelicaServices 4.0.0+maint.om/package.mo", uses=false)
loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaTest 4.0.0+maint.om/package.mo", uses=false)
Using package ModelicaTest with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaTest 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)
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)
Running command: translateModel(ModelicaTest.Fluid.Dissipation.Verifications.HeatTransfer.Plate.kc_turbulent_KC,tolerance=1e-07,outputFormat="mat",numberOfIntervals=5000,variableFilter="time|cp.1.|cp.2.|cp.3.|eta.1.|eta.2.|eta.3.|lambda.1.|lambda.2.|lambda.3.|rho.1.|rho.2.|rho.3.|Nu.1.|Nu.2.|Nu.3.|velocity.1.|velocity.2.|velocity.3.|kc.1.|kc.2.|kc.3.|Pr.1.|Pr.2.|Pr.3.|Re.1.|Re.2.|Re.3.|input_Nu.y",fileNamePrefix="ModelicaTest_4.0.0_ModelicaTest.Fluid.Dissipation.Verifications.HeatTransfer.Plate.kc_turbulent_KC")
translateModel(ModelicaTest.Fluid.Dissipation.Verifications.HeatTransfer.Plate.kc_turbulent_KC,tolerance=1e-07,outputFormat="mat",numberOfIntervals=5000,variableFilter="time|cp.1.|cp.2.|cp.3.|eta.1.|eta.2.|eta.3.|lambda.1.|lambda.2.|lambda.3.|rho.1.|rho.2.|rho.3.|Nu.1.|Nu.2.|Nu.3.|velocity.1.|velocity.2.|velocity.3.|kc.1.|kc.2.|kc.3.|Pr.1.|Pr.2.|Pr.3.|Re.1.|Re.2.|Re.3.|input_Nu.y",fileNamePrefix="ModelicaTest_4.0.0_ModelicaTest.Fluid.Dissipation.Verifications.HeatTransfer.Plate.kc_turbulent_KC")
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.002066/0.002066, allocations: 186.9 kB / 17.97 MB, free: 3.789 MB / 13.93 MB
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.285/1.285, allocations: 222.9 MB / 241.6 MB, free: 10.99 MB / 202.7 MB
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001206/0.001206, allocations: 97.3 kB / 291.9 MB, free: 10.95 MB / 234.7 MB
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaTest 4.0.0+maint.om/package.mo): time 0.3382/0.3382, allocations: 44.12 MB / 386.1 MB, free: 37.96 MB / 298.7 MB
Notification: Performance of FrontEnd - loaded program: time 0.001025/0.001025, allocations: 51.92 kB / 457.8 MB, free: 2.27 MB / 330.7 MB
Notification: Performance of FrontEnd - Absyn->SCode: time 0.3506/0.3517, allocations: 60.8 MB / 0.5064 GB, free: 38.27 MB / 378.7 MB
Notification: Performance of NFInst.instantiate(ModelicaTest.Fluid.Dissipation.Verifications.HeatTransfer.Plate.kc_turbulent_KC): time 0.003624/0.3553, allocations: 1.747 MB / 0.5081 GB, free: 37.08 MB / 378.7 MB
Notification: Performance of NFInst.instExpressions: time 0.001052/0.3564, allocations: 0.725 MB / 0.5088 GB, free: 36.58 MB / 378.7 MB
Notification: Performance of NFInst.updateImplicitVariability: time 5.024e-05/0.3565, allocations: 0 / 0.5088 GB, free: 36.58 MB / 378.7 MB
Notification: Performance of NFTyping.typeComponents: time 0.0002258/0.3567, allocations: 43.44 kB / 0.5089 GB, free: 36.55 MB / 378.7 MB
Notification: Performance of NFTyping.typeBindings: time 0.0002334/0.357, allocations: 56.91 kB / 0.5089 GB, free: 36.53 MB / 378.7 MB
Notification: Performance of NFTyping.typeClassSections: time 0.000167/0.3571, allocations: 52.45 kB / 0.509 GB, free: 36.51 MB / 378.7 MB
Notification: Performance of NFFlatten.flatten: time 0.0002538/0.3574, allocations: 251.2 kB / 0.5092 GB, free: 36.43 MB / 378.7 MB
Notification: Performance of NFFlatten.resolveConnections: time 6.221e-05/0.3575, allocations: 13.94 kB / 0.5092 GB, free: 36.42 MB / 378.7 MB
Notification: Performance of NFEvalConstants.evaluate: time 7.896e-05/0.3576, allocations: 55.06 kB / 0.5093 GB, free: 36.4 MB / 378.7 MB
Notification: Performance of NFSimplifyModel.simplify: time 0.0001461/0.3577, allocations: 81.69 kB / 0.5094 GB, free: 36.37 MB / 378.7 MB
Notification: Performance of NFPackage.collectConstants: time 1.874e-05/0.3577, allocations: 2.375 kB / 0.5094 GB, free: 36.37 MB / 378.7 MB
Notification: Performance of NFFlatten.collectFunctions: time 0.0001639/0.3579, allocations: 75.97 kB / 0.5094 GB, free: 36.34 MB / 378.7 MB
Notification: Performance of NFScalarize.scalarize: time 6.669e-05/0.358, allocations: 41.92 kB / 0.5095 GB, free: 36.33 MB / 378.7 MB
Notification: Performance of NFVerifyModel.verify: time 6.559e-05/0.358, allocations: 60.48 kB / 0.5095 GB, free: 36.3 MB / 378.7 MB
Notification: Performance of NFConvertDAE.convert: time 0.0002408/0.3583, allocations: 182.4 kB / 0.5097 GB, free: 36.23 MB / 378.7 MB
Notification: Performance of FrontEnd - DAE generated: time 4.549e-06/0.3583, allocations: 4 kB / 0.5097 GB, free: 36.22 MB / 378.7 MB
Notification: Performance of FrontEnd: time 8.41e-07/0.3583, allocations: 4 kB / 0.5097 GB, free: 36.22 MB / 378.7 MB
Notification: Performance of Transformations before backend: time 4.047e-06/0.3583, allocations: 0 / 0.5097 GB, free: 36.22 MB / 378.7 MB
Notification: Model statistics after passing the front-end and creating the data structures used by the back-end:
 * Number of equations: 34
 * Number of variables: 34
Notification: Performance of Generate backend data structure: time 0.0005971/0.3589, allocations: 456 kB / 0.5102 GB, free: 35.8 MB / 378.7 MB
Notification: Performance of prepare preOptimizeDAE: time 3.716e-05/0.359, allocations: 8.781 kB / 0.5102 GB, free: 35.8 MB / 378.7 MB
Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0005724/0.3595, allocations: 84.36 kB / 0.5102 GB, free: 35.79 MB / 378.7 MB
Notification: Performance of preOpt evaluateParameters (simulation): time 0.000209/0.3598, allocations: 219.1 kB / 0.5104 GB, free: 35.57 MB / 378.7 MB
Notification: Performance of preOpt simplifyIfEquations (simulation): time 1.418e-05/0.3598, allocations: 10.28 kB / 0.5105 GB, free: 35.57 MB / 378.7 MB
Notification: Performance of preOpt expandDerOperator (simulation): time 2.795e-05/0.3598, allocations: 10.17 kB / 0.5105 GB, free: 35.57 MB / 378.7 MB
Notification: Performance of preOpt clockPartitioning (simulation): time 0.0004554/0.3603, allocations: 305.3 kB / 0.5108 GB, free: 35.45 MB / 378.7 MB
Notification: Performance of preOpt findStateOrder (simulation): time 1.068e-05/0.3603, allocations: 0 / 0.5108 GB, free: 35.45 MB / 378.7 MB
Notification: Performance of preOpt replaceEdgeChange (simulation): time 2.138e-05/0.3603, allocations: 0 / 0.5108 GB, free: 35.45 MB / 378.7 MB
Notification: Performance of preOpt inlineArrayEqn (simulation): time 3.098e-05/0.3604, allocations: 25.62 kB / 0.5108 GB, free: 35.45 MB / 378.7 MB
Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0005122/0.3609, allocations: 297.4 kB / 0.5111 GB, free: 35.38 MB / 378.7 MB
Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.001134/0.362, allocations: 0.7214 MB / 0.5118 GB, free: 34.92 MB / 378.7 MB
Notification: Performance of preOpt comSubExp (simulation): time 0.0004278/0.3625, allocations: 281.2 kB / 0.512 GB, free: 34.86 MB / 378.7 MB
Notification: Performance of preOpt resolveLoops (simulation): time 0.000179/0.3627, allocations: 109.6 kB / 0.5121 GB, free: 34.84 MB / 378.7 MB
Notification: Performance of preOpt evalFunc (simulation): time 2.396e-05/0.3627, allocations: 3.984 kB / 0.5121 GB, free: 34.83 MB / 378.7 MB
Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 1.854e-05/0.3627, allocations: 37.47 kB / 0.5122 GB, free: 34.79 MB / 378.7 MB
Notification: Performance of pre-optimization done (n=13): time 1.212e-06/0.3627, allocations: 0 / 0.5122 GB, free: 34.79 MB / 378.7 MB
Notification: Performance of matching and sorting (n=13): time 0.0007019/0.3634, allocations: 347.3 kB / 0.5125 GB, free: 34.71 MB / 378.7 MB
Notification: Performance of inlineWhenForInitialization (initialization): time 3.191e-05/0.3635, allocations: 56.84 kB / 0.5126 GB, free: 34.64 MB / 378.7 MB
Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0001777/0.3637, allocations: 227.6 kB / 0.5128 GB, free: 34.52 MB / 378.7 MB
Notification: Performance of collectPreVariables (initialization): time 1.62e-05/0.3637, allocations: 25.7 kB / 0.5128 GB, free: 34.48 MB / 378.7 MB
Notification: Performance of collectInitialEqns (initialization): time 5.483e-05/0.3638, allocations: 116.2 kB / 0.5129 GB, free: 34.38 MB / 378.7 MB
Notification: Performance of collectInitialBindings (initialization): time 3.224e-05/0.3638, allocations: 44.62 kB / 0.513 GB, free: 34.34 MB / 378.7 MB
Notification: Performance of simplifyInitialFunctions (initialization): time 7.35e-05/0.3639, allocations: 45.7 kB / 0.513 GB, free: 34.32 MB / 378.7 MB
Notification: Performance of setup shared object (initialization): time 5.534e-05/0.3639, allocations: 328.8 kB / 0.5133 GB, free: 34 MB / 378.7 MB
Notification: Performance of preBalanceInitialSystem (initialization): time 0.0001922/0.3641, allocations: 101.8 kB / 0.5134 GB, free: 33.99 MB / 378.7 MB
Notification: Performance of partitionIndependentBlocks (initialization): time 0.0001917/0.3643, allocations: 126.3 kB / 0.5135 GB, free: 33.95 MB / 378.7 MB
Notification: Performance of analyzeInitialSystem (initialization): time 0.0003842/0.3647, allocations: 242 kB / 0.5138 GB, free: 33.88 MB / 378.7 MB
Notification: Performance of solveInitialSystemEqSystem (initialization): time 2.465e-06/0.3647, allocations: 3.938 kB / 0.5138 GB, free: 33.88 MB / 378.7 MB
Notification: Performance of matching and sorting (n=16) (initialization): time 0.0004825/0.3652, allocations: 289.5 kB / 0.5141 GB, free: 33.8 MB / 378.7 MB
Notification: Performance of prepare postOptimizeDAE: time 1.528e-05/0.3653, allocations: 4.969 kB / 0.5141 GB, free: 33.8 MB / 378.7 MB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 6.151e-06/0.3653, allocations: 3.5 kB / 0.5141 GB, free: 33.8 MB / 378.7 MB
Notification: Performance of postOpt tearingSystem (initialization): time 1.457e-05/0.3653, allocations: 7.312 kB / 0.5141 GB, free: 33.8 MB / 378.7 MB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.01809/0.3834, allocations: 0.9226 MB / 0.515 GB, free: 33.78 MB / 378.7 MB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.01758/0.401, allocations: 9.96 MB / 0.5247 GB, free: 25.41 MB / 378.7 MB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0003586/0.4014, allocations: 27.25 kB / 0.5247 GB, free: 25.39 MB / 378.7 MB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 3.09e-05/0.4015, allocations: 12.22 kB / 0.5247 GB, free: 25.39 MB / 378.7 MB
Notification: Model statistics after passing the back-end for initialization:
 * Number of independent subsystems: 4
 * 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 (16):
 * Single equations (assignments): 10
 * Array equations: 0
 * Algorithm blocks: 0
 * Record equations: 0
 * When equations: 0
 * If-equations: 0
 * Equation systems (not torn): 6
 * Torn equation systems: 0
 * 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): 6 systems
   {1, 1, 1, 1, 1, 1}
 * Without analytic Jacobian (size): 0 systems
Notification: Performance of prepare postOptimizeDAE: time 0.0001978/0.4017, allocations: 137.7 kB / 0.5249 GB, free: 25.27 MB / 378.7 MB
Notification: Performance of postOpt lateInlineFunction (simulation): time 5.81e-05/0.4018, allocations: 20.34 kB / 0.5249 GB, free: 25.26 MB / 378.7 MB
Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.005799/0.4076, allocations: 0.6311 MB / 0.5255 GB, free: 25.12 MB / 378.7 MB
Notification: Performance of postOpt inlineArrayEqn (simulation): time 3.296e-06/0.4076, allocations: 0 / 0.5255 GB, free: 25.12 MB / 378.7 MB
Notification: Performance of postOpt constantLinearSystem (simulation): time 2.705e-06/0.4076, allocations: 6.562 kB / 0.5255 GB, free: 25.12 MB / 378.7 MB
Notification: Performance of postOpt simplifysemiLinear (simulation): time 4.769e-06/0.4076, allocations: 112 / 0.5255 GB, free: 25.12 MB / 378.7 MB
Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.0002703/0.4079, allocations: 277.3 kB / 0.5258 GB, free: 24.9 MB / 378.7 MB
Notification: Performance of postOpt simplifyComplexFunction (simulation): time 2.475e-06/0.4079, allocations: 0 / 0.5258 GB, free: 24.9 MB / 378.7 MB
Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.000206/0.4081, allocations: 33.11 kB / 0.5258 GB, free: 24.9 MB / 378.7 MB
Notification: Performance of postOpt tearingSystem (simulation): time 0.006581/0.4147, allocations: 435.8 kB / 0.5262 GB, free: 24.85 MB / 378.7 MB
Notification: Performance of postOpt inputDerivativesUsed (simulation): time 2.617e-05/0.4147, allocations: 6.234 kB / 0.5262 GB, free: 24.85 MB / 378.7 MB
Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.01244/0.4272, allocations: 9.547 MB / 0.5355 GB, free: 16.66 MB / 378.7 MB
Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.633e-06/0.4272, allocations: 0 / 0.5355 GB, free: 16.66 MB / 378.7 MB
Notification: Performance of postOpt symbolicJacobian (simulation): time 0.006207/0.4334, allocations: 1.388 MB / 0.5369 GB, free: 15.82 MB / 378.7 MB
Notification: Performance of postOpt removeConstants (simulation): time 6.664e-05/0.4335, allocations: 96.48 kB / 0.537 GB, free: 15.71 MB / 378.7 MB
Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 2.755e-05/0.4335, allocations: 0 / 0.537 GB, free: 15.71 MB / 378.7 MB
Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0002342/0.4338, allocations: 12.77 kB / 0.537 GB, free: 15.71 MB / 378.7 MB
Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001619/0.434, allocations: 44.67 kB / 0.537 GB, free: 15.71 MB / 378.7 MB
Notification: Performance of postOpt collapseArrayExpressions (simulation): time 2.192e-05/0.434, allocations: 20.22 kB / 0.5371 GB, free: 15.7 MB / 378.7 MB
Notification: Performance of sorting global known variables: time 0.0001281/0.4341, allocations: 175.8 kB / 0.5372 GB, free: 15.59 MB / 378.7 MB
Notification: Performance of sort global known variables: time 1.3e-07/0.4341, allocations: 0 / 0.5372 GB, free: 15.59 MB / 378.7 MB
Notification: Performance of remove unused functions: time 0.0006478/0.4348, allocations: 94.03 kB / 0.5373 GB, free: 15.59 MB / 378.7 MB
Notification: Model statistics after passing the back-end for simulation:
 * Number of independent subsystems: 1
 * 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 (13):
 * Single equations (assignments): 7
 * Array equations: 0
 * Algorithm blocks: 0
 * Record equations: 0
 * When equations: 0
 * If-equations: 0
 * Equation systems (not torn): 3
 * Torn equation systems: 3
 * 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): 3 systems
   {1, 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): 3 systems
   {(1,1), (1,1), (1,1)}
Notification: Performance of Backend phase and start with SimCode phase: time 0.0001624/0.435, allocations: 117.1 kB / 0.5374 GB, free: 15.48 MB / 378.7 MB
Notification: Performance of simCode: created initialization part: time 0.0175/0.4525, allocations: 1.121 MB / 0.5385 GB, free: 15.43 MB / 378.7 MB
Notification: Performance of simCode: created event and clocks part: time 7.965e-06/0.4525, allocations: 0 / 0.5385 GB, free: 15.43 MB / 378.7 MB
Notification: Performance of simCode: created simulation system equations: time 0.001564/0.4541, allocations: 0.5268 MB / 0.539 GB, free: 15.07 MB / 378.7 MB
Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.0004018/0.4545, allocations: 35.03 kB / 0.5391 GB, free: 15.05 MB / 378.7 MB
Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.002413/0.4569, allocations: 0.8495 MB / 0.5399 GB, free: 14.63 MB / 378.7 MB
Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0001814/0.4571, allocations: 0.7579 MB / 0.5406 GB, free: 13.91 MB / 378.7 MB
Notification: Performance of simCode: alias equations: time 0.0001158/0.4572, allocations: 49.77 kB / 0.5407 GB, free: 13.91 MB / 378.7 MB
Notification: Performance of simCode: all other stuff during SimCode phase: time 5.135e-05/0.4573, allocations: 16.06 kB / 0.5407 GB, free: 13.91 MB / 378.7 MB
Notification: Performance of SimCode: time 1.052e-06/0.4573, allocations: 0 / 0.5407 GB, free: 13.91 MB / 378.7 MB
Notification: Performance of Templates: time 0.01298/0.4703, allocations: 7.407 MB / 0.5479 GB, free: 12.59 MB / 378.7 MB
make -j1 -f ModelicaTest_4.0.0_ModelicaTest.Fluid.Dissipation.Verifications.HeatTransfer.Plate.kc_turbulent_KC.makefile
(rm -f ModelicaTest_4.0.0_ModelicaTest.Fluid.Dissipation.Verifications.HeatTransfer.Plate.kc_turbulent_KC.pipe ; mkfifo ModelicaTest_4.0.0_ModelicaTest.Fluid.Dissipation.Verifications.HeatTransfer.Plate.kc_turbulent_KC.pipe ; head -c 1048576 < ModelicaTest_4.0.0_ModelicaTest.Fluid.Dissipation.Verifications.HeatTransfer.Plate.kc_turbulent_KC.pipe >> ../files/ModelicaTest_4.0.0_ModelicaTest.Fluid.Dissipation.Verifications.HeatTransfer.Plate.kc_turbulent_KC.sim & ./ModelicaTest_4.0.0_ModelicaTest.Fluid.Dissipation.Verifications.HeatTransfer.Plate.kc_turbulent_KC  -abortSlowSimulation -alarm=480  -emit_protected -lv LOG_STATS > ModelicaTest_4.0.0_ModelicaTest.Fluid.Dissipation.Verifications.HeatTransfer.Plate.kc_turbulent_KC.pipe 2>&1)
diffSimulationResults("ModelicaTest_4.0.0_ModelicaTest.Fluid.Dissipation.Verifications.HeatTransfer.Plate.kc_turbulent_KC_res.mat","/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork@2/Reference-modelica.org/ReferenceResults/MAP-LIB_ReferenceResults/v4.0.0/ModelicaTest/Fluid/Dissipation/Verifications/HeatTransfer/Plate/kc_turbulent_KC/kc_turbulent_KC.csv","../files/ModelicaTest_4.0.0_ModelicaTest.Fluid.Dissipation.Verifications.HeatTransfer.Plate.kc_turbulent_KC.diff",relTol=0.003,relTolDiffMinMax=0.003,rangeDelta=0.001)
Reference file matches