Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_9_Buildings.Electrical.AC.ThreePhasesUnbalanced.Lines.Examples.ACLine_RLC.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.Electrical.AC.ThreePhasesUnbalanced.Lines.Examples.ACLine_RLC,tolerance=1e-06,outputFormat="mat",numberOfIntervals=5000,variableFilter="time|RLCLine_1.terminal_n.phase.1..i.1.|RLCLine_1.terminal_n.phase.1..i.2.|RLCLine_sc.terminal_n.phase.1..i.1.|RLCLine_sc.terminal_n.phase.1..i.2.|RLCLine_2a.terminal_n.phase.1..i.1.|RLCLine_2a.terminal_n.phase.1..i.2.|RLCLine_3a.terminal_n.phase.1..i.1.|RLCLine_3a.terminal_n.phase.1..i.2.|RLCLine_3b.terminal_n.phase.1..i.1.|RLCLine_3b.terminal_n.phase.1..i.2.",fileNamePrefix="Buildings_9_Buildings.Electrical.AC.ThreePhasesUnbalanced.Lines.Examples.ACLine_RLC") translateModel(Buildings.Electrical.AC.ThreePhasesUnbalanced.Lines.Examples.ACLine_RLC,tolerance=1e-06,outputFormat="mat",numberOfIntervals=5000,variableFilter="time|RLCLine_1.terminal_n.phase.1..i.1.|RLCLine_1.terminal_n.phase.1..i.2.|RLCLine_sc.terminal_n.phase.1..i.1.|RLCLine_sc.terminal_n.phase.1..i.2.|RLCLine_2a.terminal_n.phase.1..i.1.|RLCLine_2a.terminal_n.phase.1..i.2.|RLCLine_3a.terminal_n.phase.1..i.1.|RLCLine_3a.terminal_n.phase.1..i.2.|RLCLine_3b.terminal_n.phase.1..i.1.|RLCLine_3b.terminal_n.phase.1..i.2.",fileNamePrefix="Buildings_9_Buildings.Electrical.AC.ThreePhasesUnbalanced.Lines.Examples.ACLine_RLC") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001328/0.001328, allocations: 110.3 kB / 16.41 MB, free: 6.477 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001323/0.001323, allocations: 185.5 kB / 17.34 MB, free: 5.754 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 / 241 MB, free: 15.15 MB / 206.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 9.1.3-maint.9.1.x/package.mo): time 2.246/2.246, allocations: 390.3 MB / 0.6655 GB, free: 0.6758 MB / 0.5294 GB Notification: Performance of FrontEnd - loaded program: time 0.001454/0.001454, allocations: 64.14 kB / 0.9516 GB, free: 7.637 MB / 0.7325 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.816/0.8175, allocations: 140.4 MB / 1.089 GB, free: 5.523 MB / 0.8575 GB Notification: Performance of NFInst.instantiate(Buildings.Electrical.AC.ThreePhasesUnbalanced.Lines.Examples.ACLine_RLC): time 0.04466/0.8622, allocations: 37.59 MB / 1.125 GB, free: 11.97 MB / 0.8887 GB Notification: Performance of NFInst.instExpressions: time 0.02673/0.889, allocations: 13.04 MB / 1.138 GB, free: 3.098 MB / 0.8887 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.006449/0.8955, allocations: 173.7 kB / 1.138 GB, free: 3.039 MB / 0.8887 GB Notification: Performance of NFTyping.typeComponents: time 0.01151/0.9071, allocations: 3.903 MB / 1.142 GB, free: 0.6719 MB / 0.8887 GB Notification: Performance of NFTyping.typeBindings: time 0.009722/0.9168, allocations: 2.605 MB / 1.145 GB, free: 15.07 MB / 0.9044 GB Notification: Performance of NFTyping.typeClassSections: time 0.008815/0.9257, allocations: 2.706 MB / 1.147 GB, free: 13.56 MB / 0.9044 GB Notification: Performance of NFFlatten.flatten: time 0.01561/0.9413, allocations: 9.597 MB / 1.157 GB, free: 9.223 MB / 0.9044 GB Notification: Performance of NFFlatten.resolveConnections: time 0.01604/0.9574, allocations: 10.49 MB / 1.167 GB, free: 4.977 MB / 0.9044 GB Notification: Performance of NFEvalConstants.evaluate: time 0.009163/0.9666, allocations: 4.071 MB / 1.171 GB, free: 2.723 MB / 0.9044 GB Notification: Performance of NFSimplifyModel.simplify: time 0.00935/0.976, allocations: 4.376 MB / 1.175 GB, free: 40 kB / 0.9044 GB Notification: Performance of NFPackage.collectConstants: time 0.003151/0.9792, allocations: 0.7736 MB / 1.176 GB, free: 36 kB / 0.9044 GB Notification: Performance of NFFlatten.collectFunctions: time 0.006862/0.986, allocations: 1.782 MB / 1.178 GB, free: 15.49 MB / 0.92 GB Notification: Performance of NFScalarize.scalarize: time 0.005661/0.9917, allocations: 3.036 MB / 1.181 GB, free: 13.52 MB / 0.92 GB Notification: Performance of NFVerifyModel.verify: time 0.01031/1.002, allocations: 3.579 MB / 1.184 GB, free: 11.02 MB / 0.92 GB Notification: Performance of NFConvertDAE.convert: time 0.01861/1.021, allocations: 11.86 MB / 1.196 GB, free: 332 kB / 0.92 GB Notification: Performance of FrontEnd - DAE generated: time 7.064e-06/1.021, allocations: 0 / 1.196 GB, free: 332 kB / 0.92 GB Notification: Performance of FrontEnd: time 2.084e-06/1.021, allocations: 0 / 1.196 GB, free: 332 kB / 0.92 GB Notification: Performance of Transformations before backend: time 0.0003687/1.021, allocations: 0 / 1.196 GB, free: 332 kB / 0.92 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 1394 * Number of variables: 1394 Notification: Performance of Generate backend data structure: time 0.01794/1.039, allocations: 6.354 MB / 1.202 GB, free: 9.895 MB / 0.9356 GB Notification: Performance of prepare preOptimizeDAE: time 4.45e-05/1.039, allocations: 12.03 kB / 1.202 GB, free: 9.883 MB / 0.9356 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.009181/1.048, allocations: 1.301 MB / 1.203 GB, free: 8.574 MB / 0.9356 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.007941/1.056, allocations: 3.787 MB / 1.207 GB, free: 4.711 MB / 0.9356 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0003456/1.057, allocations: 382.5 kB / 1.207 GB, free: 4.336 MB / 0.9356 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.002039/1.059, allocations: 0.5 MB / 1.208 GB, free: 3.836 MB / 0.9356 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.0196/1.078, allocations: 8.887 MB / 1.216 GB, free: 10.6 MB / 0.9512 GB Notification: Performance of preOpt findStateOrder (simulation): time 0.0001858/1.079, allocations: 31.77 kB / 1.216 GB, free: 10.57 MB / 0.9512 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.001397/1.08, allocations: 216 kB / 1.217 GB, free: 10.36 MB / 0.9512 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.002291/1.082, allocations: 0.6265 MB / 1.217 GB, free: 9.727 MB / 0.9512 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.01433/1.097, allocations: 7.018 MB / 1.224 GB, free: 2.695 MB / 0.9512 GB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.0519/1.149, allocations: 40.06 MB / 1.263 GB, free: 7.402 MB / 0.9981 GB Notification: Performance of preOpt comSubExp (simulation): time 0.004221/1.153, allocations: 2.891 MB / 1.266 GB, free: 4.504 MB / 0.9981 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.003754/1.157, allocations: 2.671 MB / 1.269 GB, free: 1.828 MB / 0.9981 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0002504/1.157, allocations: 30.09 kB / 1.269 GB, free: 1.797 MB / 0.9981 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 6.421e-05/1.157, allocations: 68.5 kB / 1.269 GB, free: 1.719 MB / 0.9981 GB Notification: Performance of pre-optimization done (n=265): time 4.268e-06/1.157, allocations: 3.938 kB / 1.269 GB, free: 1.715 MB / 0.9981 GB Notification: Performance of matching and sorting (n=424): time 0.3036/1.461, allocations: 74.68 MB / 1.342 GB, free: 6.367 MB / 1.076 GB Notification: Performance of inlineWhenForInitialization (initialization): time 7.284e-05/1.461, allocations: 94.73 kB / 1.342 GB, free: 6.262 MB / 1.076 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.003229/1.464, allocations: 2.359 MB / 1.344 GB, free: 3.891 MB / 1.076 GB Notification: Performance of collectPreVariables (initialization): time 0.0008303/1.465, allocations: 97.7 kB / 1.344 GB, free: 3.789 MB / 1.076 GB Notification: Performance of collectInitialEqns (initialization): time 0.001426/1.466, allocations: 2.337 MB / 1.346 GB, free: 1.426 MB / 1.076 GB Notification: Performance of collectInitialBindings (initialization): time 0.001727/1.468, allocations: 1.436 MB / 1.348 GB, free: 15.97 MB / 1.092 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.001378/1.469, allocations: 0.7292 MB / 1.349 GB, free: 15.23 MB / 1.092 GB Notification: Performance of setup shared object (initialization): time 9.138e-05/1.469, allocations: 305.1 kB / 1.349 GB, free: 14.93 MB / 1.092 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.004261/1.474, allocations: 2.995 MB / 1.352 GB, free: 11.92 MB / 1.092 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.005028/1.479, allocations: 3.851 MB / 1.355 GB, free: 7.734 MB / 1.092 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.01105/1.49, allocations: 7.38 MB / 1.363 GB, free: 32 kB / 1.092 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 3.139e-05/1.49, allocations: 12 kB / 1.363 GB, free: 20 kB / 1.092 GB Notification: Performance of matching and sorting (n=551) (initialization): time 0.02982/1.52, allocations: 12.56 MB / 1.375 GB, free: 3.355 MB / 1.107 GB Notification: Performance of prepare postOptimizeDAE: time 4.17e-05/1.52, allocations: 23.88 kB / 1.375 GB, free: 3.332 MB / 1.107 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 3.74e-05/1.52, allocations: 20 kB / 1.375 GB, free: 3.312 MB / 1.107 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0231/1.543, allocations: 6.024 MB / 1.381 GB, free: 13.22 MB / 1.123 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.002278/1.545, allocations: 491.1 kB / 1.381 GB, free: 12.74 MB / 1.123 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.08696/1.632, allocations: 72.98 MB / 1.453 GB, free: 428 kB / 1.186 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.004478/1.637, allocations: 220.3 kB / 1.453 GB, free: 208 kB / 1.186 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0007576/1.638, allocations: 159.9 kB / 1.453 GB, free: 48 kB / 1.186 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 101 * 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 (269): * Single equations (assignments): 245 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 24 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 24 systems {(2,2,100.0%), (1,1,100.0%), (2,2,100.0%), (1,1,100.0%), (2,2,100.0%), (1,1,100.0%), (4,16,100.0%), (4,16,100.0%), (4,16,100.0%), (4,16,100.0%), (4,16,100.0%), (4,16,100.0%), (2,8,100.0%), (2,16,100.0%), (3,15,100.0%), (2,8,100.0%), (2,8,100.0%), (2,16,100.0%), (3,15,100.0%), (2,8,100.0%), (2,8,100.0%), (2,16,100.0%), (3,15,100.0%), (2,8,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 0 systems Notification: Performance of prepare postOptimizeDAE: time 0.004679/1.642, allocations: 1.992 MB / 1.455 GB, free: 14.04 MB / 1.201 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.001126/1.643, allocations: 387.5 kB / 1.455 GB, free: 13.66 MB / 1.201 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.02864/1.672, allocations: 12.24 MB / 1.467 GB, free: 1.309 MB / 1.201 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 4.709e-05/1.672, allocations: 40 kB / 1.467 GB, free: 1.27 MB / 1.201 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 0.0001967/1.672, allocations: 55.88 kB / 1.467 GB, free: 1.215 MB / 1.201 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.0001009/1.673, allocations: 19.92 kB / 1.467 GB, free: 1.195 MB / 1.201 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.04201/1.715, allocations: 19.13 MB / 1.486 GB, free: 13.79 MB / 1.232 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 4.495e-05/1.715, allocations: 8 kB / 1.486 GB, free: 13.78 MB / 1.232 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.001699/1.716, allocations: 283.6 kB / 1.486 GB, free: 13.5 MB / 1.232 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.02122/1.738, allocations: 5.574 MB / 1.492 GB, free: 7.867 MB / 1.232 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0008316/1.738, allocations: 91.92 kB / 1.492 GB, free: 7.777 MB / 1.232 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.08384/1.822, allocations: 70.62 MB / 1.561 GB, free: 13.81 MB / 1.311 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 7.173e-06/1.822, allocations: 8 kB / 1.561 GB, free: 13.8 MB / 1.311 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.7366/2.559, allocations: 15.61 MB / 1.576 GB, free: 406 MB / 1.311 GB Notification: Performance of postOpt removeConstants (simulation): time 0.003337/2.562, allocations: 1.046 MB / 1.577 GB, free: 405.9 MB / 1.311 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0008681/2.563, allocations: 84.12 kB / 1.577 GB, free: 405.9 MB / 1.311 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.002663/2.566, allocations: 219.1 kB / 1.577 GB, free: 405.9 MB / 1.311 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.001682/2.568, allocations: 403.3 kB / 1.578 GB, free: 405.9 MB / 1.311 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0003167/2.568, allocations: 110.3 kB / 1.578 GB, free: 405.9 MB / 1.311 GB Notification: Performance of sorting global known variables: time 0.002727/2.571, allocations: 1.557 MB / 1.579 GB, free: 405.8 MB / 1.311 GB Notification: Performance of sort global known variables: time 2.91e-07/2.571, allocations: 0 / 1.579 GB, free: 405.8 MB / 1.311 GB Notification: Performance of remove unused functions: time 0.007321/2.578, allocations: 1.863 MB / 1.581 GB, free: 405.8 MB / 1.311 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 31 * Number of states: 6 (RLCLine_sc.phase1.Vc[1],RLCLine_sc.phase1.Vc[2],RLCLine_sc.phase2.Vc[1],RLCLine_sc.phase2.Vc[2],RLCLine_sc.phase3.Vc[1],RLCLine_sc.phase3.Vc[2]) * 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 (145): * Single equations (assignments): 121 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 24 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 24 systems {(2,8,100.0%), (2,8,100.0%), (2,8,100.0%), (3,15,100.0%), (3,15,100.0%), (3,15,100.0%), (4,16,100.0%), (4,16,100.0%), (4,16,100.0%), (1,1,100.0%), (1,1,100.0%), (1,1,100.0%), (2,2,100.0%), (2,2,100.0%), (2,2,100.0%), (2,8,100.0%), (3,15,100.0%), (2,8,100.0%), (3,15,100.0%), (2,8,100.0%), (3,15,100.0%), (4,16,100.0%), (4,16,100.0%), (4,16,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 0 systems Notification: Performance of Backend phase and start with SimCode phase: time 0.0006329/2.579, allocations: 213.5 kB / 1.581 GB, free: 405.7 MB / 1.311 GB Notification: Performance of simCode: created initialization part: time 0.02429/2.603, allocations: 12.2 MB / 1.593 GB, free: 402.7 MB / 1.311 GB Notification: Performance of simCode: created event and clocks part: time 1.85e-05/2.603, allocations: 5.844 kB / 1.593 GB, free: 402.7 MB / 1.311 GB Notification: Performance of simCode: created simulation system equations: time 0.01728/2.62, allocations: 8.36 MB / 1.602 GB, free: 399.5 MB / 1.311 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.006687/2.627, allocations: 1.191 MB / 1.603 GB, free: 399.1 MB / 1.311 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.02658/2.654, allocations: 12.93 MB / 1.615 GB, free: 393.4 MB / 1.311 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.006751/2.66, allocations: 4.163 MB / 1.619 GB, free: 392 MB / 1.311 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.001221/2.662, allocations: 193.4 kB / 1.62 GB, free: 392 MB / 1.311 GB Notification: Performance of SimCode: time 1.503e-06/2.662, allocations: 0 / 1.62 GB, free: 392 MB / 1.311 GB Notification: Performance of Templates: time 1.325/3.986, allocations: 0.7441 GB / 2.364 GB, free: 225.1 MB / 1.357 GB make -j1 -f Buildings_9_Buildings.Electrical.AC.ThreePhasesUnbalanced.Lines.Examples.ACLine_RLC.makefile (rm -f Buildings_9_Buildings.Electrical.AC.ThreePhasesUnbalanced.Lines.Examples.ACLine_RLC.pipe ; mkfifo Buildings_9_Buildings.Electrical.AC.ThreePhasesUnbalanced.Lines.Examples.ACLine_RLC.pipe ; head -c 1048576 < Buildings_9_Buildings.Electrical.AC.ThreePhasesUnbalanced.Lines.Examples.ACLine_RLC.pipe >> ../files/Buildings_9_Buildings.Electrical.AC.ThreePhasesUnbalanced.Lines.Examples.ACLine_RLC.sim & ./Buildings_9_Buildings.Electrical.AC.ThreePhasesUnbalanced.Lines.Examples.ACLine_RLC -abortSlowSimulation -alarm=480 -emit_protected -lv LOG_STATS > Buildings_9_Buildings.Electrical.AC.ThreePhasesUnbalanced.Lines.Examples.ACLine_RLC.pipe 2>&1) diffSimulationResults("Buildings_9_Buildings.Electrical.AC.ThreePhasesUnbalanced.Lines.Examples.ACLine_RLC_res.mat","/mnt/ReferenceFiles/Buildings/csv/maint_9.1.x/Buildings_Electrical_AC_ThreePhasesUnbalanced_Lines_Examples_ACLine_RLC.csv","/var/lib/jenkins1/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/files/Buildings_9_Buildings.Electrical.AC.ThreePhasesUnbalanced.Lines.Examples.ACLine_RLC.diff",relTol=0.003,relTolDiffMinMax=0.003,rangeDelta=0.001) Reference file matches