Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr ScalableTestSuite_ScalableTestSuite.Thermal.DistrictHeating.ScaledExperiments.HeatingSystem_N_20.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/ScalableTestSuite 2.0.0-master/package.mo", uses=false) Using package ScalableTestSuite with version 2.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/ScalableTestSuite 2.0.0-master/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(ScalableTestSuite.Thermal.DistrictHeating.ScaledExperiments.HeatingSystem_N_20,tolerance=1e-07,outputFormat="mat",numberOfIntervals=43200,variableFilter="Qh.1.|Qh.20.|Qh.2.|Qh.3.|Que.1.|Que.20.|Que.2.|Que.3.|Tu.1.|Tu.20.|Tu.2.|Tu.3.|der.Tu.1..|der.Tu.20..|der.Tu.2..|der.Tu.3..|der.x.1..|der.x.20..|der.x.2..|der.x.3..|time|time|u.1.|u.20.|u.2.|u.3.|x.1.|x.20.|x.2.|x.3.",fileNamePrefix="ScalableTestSuite_ScalableTestSuite.Thermal.DistrictHeating.ScaledExperiments.HeatingSystem_N_20") translateModel(ScalableTestSuite.Thermal.DistrictHeating.ScaledExperiments.HeatingSystem_N_20,tolerance=1e-07,outputFormat="mat",numberOfIntervals=43200,variableFilter="Qh.1.|Qh.20.|Qh.2.|Qh.3.|Que.1.|Que.20.|Que.2.|Que.3.|Tu.1.|Tu.20.|Tu.2.|Tu.3.|der.Tu.1..|der.Tu.20..|der.Tu.2..|der.Tu.3..|der.x.1..|der.x.20..|der.x.2..|der.x.3..|time|time|u.1.|u.20.|u.2.|u.3.|x.1.|x.20.|x.2.|x.3.",fileNamePrefix="ScalableTestSuite_ScalableTestSuite.Thermal.DistrictHeating.ScaledExperiments.HeatingSystem_N_20") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001192/0.001192, allocations: 188.9 kB / 17.27 MB, free: 4.504 MB / 13.93 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.226/1.226, allocations: 222.9 MB / 240.9 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 0.0008981/0.0008981, allocations: 100.4 kB / 291.2 MB, free: 10.94 MB / 234.7 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ScalableTestSuite 2.0.0-master/package.mo): time 0.653/0.653, allocations: 119.3 MB / 460.6 MB, free: 9.582 MB / 346.7 MB Notification: Performance of FrontEnd - loaded program: time 0.0009147/0.0009151, allocations: 51.92 kB / 0.5404 GB, free: 41.91 MB / 394.8 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.1119/0.1128, allocations: 80.69 MB / 0.6192 GB, free: 11.36 MB / 442.8 MB Notification: Performance of NFInst.instantiate(ScalableTestSuite.Thermal.DistrictHeating.ScaledExperiments.HeatingSystem_N_20): time 0.002336/0.1152, allocations: 1.446 MB / 0.6207 GB, free: 9.902 MB / 442.8 MB Notification: Performance of NFInst.instExpressions: time 0.0008226/0.116, allocations: 0.5186 MB / 0.6212 GB, free: 9.383 MB / 442.8 MB Notification: Performance of NFInst.updateImplicitVariability: time 2.978e-05/0.1161, allocations: 3.938 kB / 0.6212 GB, free: 9.379 MB / 442.8 MB Notification: Performance of NFTyping.typeComponents: time 7.388e-05/0.1161, allocations: 3.984 kB / 0.6212 GB, free: 9.375 MB / 442.8 MB Notification: Performance of NFTyping.typeBindings: time 0.0002312/0.1164, allocations: 55.75 kB / 0.6212 GB, free: 9.32 MB / 442.8 MB Notification: Performance of NFTyping.typeClassSections: time 7.397e-05/0.1165, allocations: 27.95 kB / 0.6213 GB, free: 9.293 MB / 442.8 MB Notification: Performance of NFFlatten.flatten: time 0.0004144/0.1169, allocations: 0.581 MB / 0.6218 GB, free: 8.711 MB / 442.8 MB Notification: Performance of NFFlatten.resolveConnections: time 3.95e-05/0.1169, allocations: 8.188 kB / 0.6218 GB, free: 8.703 MB / 442.8 MB Notification: Performance of NFEvalConstants.evaluate: time 0.0001753/0.1171, allocations: 199.7 kB / 0.622 GB, free: 8.508 MB / 442.8 MB Notification: Performance of NFSimplifyModel.simplify: time 0.000333/0.1175, allocations: 307.4 kB / 0.6223 GB, free: 8.207 MB / 442.8 MB Notification: Performance of NFPackage.collectConstants: time 6.944e-05/0.1175, allocations: 28 kB / 0.6223 GB, free: 8.18 MB / 442.8 MB Notification: Performance of NFFlatten.collectFunctions: time 0.0001539/0.1177, allocations: 51.97 kB / 0.6224 GB, free: 8.129 MB / 442.8 MB Notification: Performance of NFScalarize.scalarize: time 0.000208/0.1179, allocations: 235.5 kB / 0.6226 GB, free: 7.898 MB / 442.8 MB Notification: Performance of NFVerifyModel.verify: time 0.0002009/0.1181, allocations: 234.9 kB / 0.6228 GB, free: 7.668 MB / 442.8 MB Notification: Performance of NFConvertDAE.convert: time 0.0003228/0.1185, allocations: 434.8 kB / 0.6232 GB, free: 7.242 MB / 442.8 MB Notification: Performance of FrontEnd - DAE generated: time 3.567e-06/0.1185, allocations: 0 / 0.6232 GB, free: 7.242 MB / 442.8 MB Notification: Performance of FrontEnd: time 1.062e-06/0.1185, allocations: 0 / 0.6232 GB, free: 7.242 MB / 442.8 MB Notification: Performance of Transformations before backend: time 5.29e-06/0.1185, allocations: 0 / 0.6232 GB, free: 7.242 MB / 442.8 MB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 103 * Number of variables: 103 Notification: Performance of Generate backend data structure: time 0.001497/0.12, allocations: 0.8154 MB / 0.624 GB, free: 6.379 MB / 442.8 MB Notification: Performance of prepare preOptimizeDAE: time 3.164e-05/0.12, allocations: 12.03 kB / 0.6241 GB, free: 6.367 MB / 442.8 MB Notification: Performance of preOpt normalInlineFunction (simulation): time 9.461e-05/0.1201, allocations: 48.38 kB / 0.6241 GB, free: 6.32 MB / 442.8 MB Notification: Performance of preOpt evaluateParameters (simulation): time 0.0004179/0.1206, allocations: 327.3 kB / 0.6244 GB, free: 5.961 MB / 442.8 MB Notification: Performance of preOpt simplifyIfEquations (simulation): time 2.099e-05/0.1206, allocations: 29 kB / 0.6244 GB, free: 5.93 MB / 442.8 MB Notification: Performance of preOpt expandDerOperator (simulation): time 9.083e-05/0.1207, allocations: 63.81 kB / 0.6245 GB, free: 5.867 MB / 442.8 MB Notification: Performance of preOpt clockPartitioning (simulation): time 0.0007693/0.1215, allocations: 0.5801 MB / 0.6251 GB, free: 5.281 MB / 442.8 MB Notification: Performance of preOpt findStateOrder (simulation): time 1.063e-05/0.1215, allocations: 4 kB / 0.6251 GB, free: 5.277 MB / 442.8 MB Notification: Performance of preOpt replaceEdgeChange (simulation): time 4.384e-05/0.1215, allocations: 16 kB / 0.6251 GB, free: 5.262 MB / 442.8 MB Notification: Performance of preOpt inlineArrayEqn (simulation): time 9.367e-06/0.1215, allocations: 15.94 kB / 0.6251 GB, free: 5.246 MB / 442.8 MB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0007849/0.1223, allocations: 0.5854 MB / 0.6257 GB, free: 4.66 MB / 442.8 MB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.000657/0.123, allocations: 0.6176 MB / 0.6263 GB, free: 3.984 MB / 442.8 MB Notification: Performance of preOpt comSubExp (simulation): time 0.002906/0.1259, allocations: 1.364 MB / 0.6276 GB, free: 2.613 MB / 442.8 MB Notification: Performance of preOpt resolveLoops (simulation): time 0.0005725/0.1265, allocations: 455.6 kB / 0.628 GB, free: 2.168 MB / 442.8 MB Notification: Performance of preOpt evalFunc (simulation): time 0.0001864/0.1267, allocations: 110.1 kB / 0.6282 GB, free: 2.043 MB / 442.8 MB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 2.303e-05/0.1267, allocations: 39.56 kB / 0.6282 GB, free: 1.996 MB / 442.8 MB Notification: Performance of pre-optimization done (n=103): time 2.054e-06/0.1267, allocations: 0 / 0.6282 GB, free: 1.996 MB / 442.8 MB Notification: Performance of matching and sorting (n=103): time 0.001847/0.1286, allocations: 1.35 MB / 0.6295 GB, free: 0.6406 MB / 442.8 MB Notification: Performance of inlineWhenForInitialization (initialization): time 3.747e-05/0.1286, allocations: 64.41 kB / 0.6296 GB, free: 0.5664 MB / 442.8 MB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0001227/0.1288, allocations: 179.2 kB / 0.6297 GB, free: 392 kB / 442.8 MB Notification: Performance of collectPreVariables (initialization): time 4.035e-05/0.1288, allocations: 41.7 kB / 0.6298 GB, free: 344 kB / 442.8 MB Notification: Performance of collectInitialEqns (initialization): time 4.588e-05/0.1289, allocations: 106.1 kB / 0.6299 GB, free: 236 kB / 442.8 MB Notification: Performance of collectInitialBindings (initialization): time 0.0002475/0.1291, allocations: 410.2 kB / 0.6303 GB, free: 15.82 MB / 458.8 MB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0002311/0.1293, allocations: 198.9 kB / 0.6305 GB, free: 15.62 MB / 458.8 MB Notification: Performance of setup shared object (initialization): time 0.0001115/0.1295, allocations: 366.7 kB / 0.6308 GB, free: 15.25 MB / 458.8 MB Notification: Performance of preBalanceInitialSystem (initialization): time 0.000633/0.1301, allocations: 474.3 kB / 0.6313 GB, free: 14.79 MB / 458.8 MB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0006192/0.1307, allocations: 487.5 kB / 0.6317 GB, free: 14.31 MB / 458.8 MB Notification: Performance of analyzeInitialSystem (initialization): time 0.001285/0.132, allocations: 1.036 MB / 0.6327 GB, free: 13.27 MB / 458.8 MB Notification: Performance of solveInitialSystemEqSystem (initialization): time 3.015e-06/0.132, allocations: 0 / 0.6327 GB, free: 13.27 MB / 458.8 MB Notification: Performance of matching and sorting (n=144) (initialization): time 0.001616/0.1336, allocations: 1.25 MB / 0.634 GB, free: 12.02 MB / 458.8 MB Notification: Performance of prepare postOptimizeDAE: time 1.614e-05/0.1337, allocations: 4 kB / 0.634 GB, free: 12.01 MB / 458.8 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 8.015e-06/0.1337, allocations: 4 kB / 0.634 GB, free: 12.01 MB / 458.8 MB Notification: Performance of postOpt tearingSystem (initialization): time 1.529e-05/0.1337, allocations: 7.938 kB / 0.634 GB, free: 12 MB / 458.8 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0009702/0.1347, allocations: 267.7 kB / 0.6342 GB, free: 11.74 MB / 458.8 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 1.238e-05/0.1347, allocations: 8 kB / 0.6342 GB, free: 11.73 MB / 458.8 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0003449/0.1351, allocations: 79.12 kB / 0.6343 GB, free: 11.65 MB / 458.8 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 6.712e-05/0.1351, allocations: 35.98 kB / 0.6343 GB, free: 11.62 MB / 458.8 MB Notification: Model statistics after passing the back-end for initialization: * 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 initialization (144): * Single equations (assignments): 144 * 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 0.0002158/0.1354, allocations: 217.5 kB / 0.6346 GB, free: 11.39 MB / 458.8 MB Notification: Performance of postOpt lateInlineFunction (simulation): time 7.89e-05/0.1355, allocations: 47.44 kB / 0.6346 GB, free: 11.35 MB / 458.8 MB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.002071/0.1375, allocations: 1.388 MB / 0.636 GB, free: 9.953 MB / 458.8 MB Notification: Performance of postOpt inlineArrayEqn (simulation): time 9.428e-06/0.1375, allocations: 12 kB / 0.636 GB, free: 9.941 MB / 458.8 MB Notification: Performance of postOpt constantLinearSystem (simulation): time 6.382e-06/0.1376, allocations: 4 kB / 0.636 GB, free: 9.938 MB / 458.8 MB Notification: Performance of postOpt simplifysemiLinear (simulation): time 1.152e-05/0.1376, allocations: 11.91 kB / 0.636 GB, free: 9.926 MB / 458.8 MB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.0007744/0.1384, allocations: 0.7426 MB / 0.6367 GB, free: 9.133 MB / 458.8 MB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 2.755e-06/0.1384, allocations: 0 / 0.6367 GB, free: 9.133 MB / 458.8 MB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.001337/0.1397, allocations: 311.7 kB / 0.637 GB, free: 8.828 MB / 458.8 MB Notification: Performance of postOpt tearingSystem (simulation): time 6.162e-06/0.1397, allocations: 4 kB / 0.637 GB, free: 8.824 MB / 458.8 MB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 8.445e-05/0.1398, allocations: 51.95 kB / 0.6371 GB, free: 8.773 MB / 458.8 MB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 5.901e-06/0.1398, allocations: 4 kB / 0.6371 GB, free: 8.77 MB / 458.8 MB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.072e-06/0.1398, allocations: 0 / 0.6371 GB, free: 8.77 MB / 458.8 MB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.026/0.1658, allocations: 13.64 MB / 0.6504 GB, free: 10.97 MB / 474.8 MB Notification: Performance of postOpt removeConstants (simulation): time 0.0003606/0.1662, allocations: 255.9 kB / 0.6506 GB, free: 10.7 MB / 474.8 MB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 9.302e-05/0.1663, allocations: 39.97 kB / 0.6507 GB, free: 10.66 MB / 474.8 MB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0003412/0.1667, allocations: 28 kB / 0.6507 GB, free: 10.63 MB / 474.8 MB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001396/0.1668, allocations: 85.14 kB / 0.6508 GB, free: 10.55 MB / 474.8 MB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 6.391e-05/0.1669, allocations: 43.92 kB / 0.6508 GB, free: 10.51 MB / 474.8 MB Notification: Performance of sorting global known variables: time 8.265e-05/0.167, allocations: 128.3 kB / 0.6509 GB, free: 10.38 MB / 474.8 MB Notification: Performance of sort global known variables: time 3.6e-07/0.167, allocations: 0 / 0.6509 GB, free: 10.38 MB / 474.8 MB Notification: Performance of remove unused functions: time 0.0007118/0.1677, allocations: 395.8 kB / 0.6513 GB, free: 9.996 MB / 474.8 MB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 1 * Number of states: 41 (Td,Tu[1],Tu[2],Tu[3],Tu[4],Tu[5],Tu[6],Tu[7],Tu[8],Tu[9],Tu[10],Tu[11],Tu[12],Tu[13],Tu[14],Tu[15],Tu[16],Tu[17],Tu[18],Tu[19],Tu[20],x[1],x[2],x[3],x[4],x[5],x[6],x[7],x[8],x[9],x[10],x[11],x[12],x[13],x[14],x[15],x[16],x[17],x[18],x[19],x[20]) * 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 (144): * Single equations (assignments): 144 * 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 0.0002028/0.1679, allocations: 151.8 kB / 0.6515 GB, free: 9.836 MB / 474.8 MB Notification: Performance of simCode: created initialization part: time 0.001478/0.1694, allocations: 1.151 MB / 0.6526 GB, free: 8.684 MB / 474.8 MB Notification: Performance of simCode: created event and clocks part: time 2.144e-06/0.1694, allocations: 0 / 0.6526 GB, free: 8.684 MB / 474.8 MB Notification: Performance of simCode: created simulation system equations: time 0.0007877/0.1702, allocations: 0.628 MB / 0.6532 GB, free: 8.059 MB / 474.8 MB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.0004194/0.1706, allocations: 111.9 kB / 0.6533 GB, free: 7.949 MB / 474.8 MB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.004324/0.175, allocations: 3.808 MB / 0.657 GB, free: 4.098 MB / 474.8 MB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0004022/0.1754, allocations: 0.9715 MB / 0.658 GB, free: 3.098 MB / 474.8 MB Notification: Performance of simCode: alias equations: time 0.001038/0.1764, allocations: 443.4 kB / 0.6584 GB, free: 2.664 MB / 474.8 MB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0004614/0.1769, allocations: 107.4 kB / 0.6585 GB, free: 2.559 MB / 474.8 MB Notification: Performance of SimCode: time 6.21e-07/0.1769, allocations: 0 / 0.6585 GB, free: 2.559 MB / 474.8 MB Notification: Performance of Templates: time 0.02228/0.1992, allocations: 16.4 MB / 0.6745 GB, free: 2.203 MB / 490.8 MB make -j1 -f ScalableTestSuite_ScalableTestSuite.Thermal.DistrictHeating.ScaledExperiments.HeatingSystem_N_20.makefile (rm -f ScalableTestSuite_ScalableTestSuite.Thermal.DistrictHeating.ScaledExperiments.HeatingSystem_N_20.pipe ; mkfifo ScalableTestSuite_ScalableTestSuite.Thermal.DistrictHeating.ScaledExperiments.HeatingSystem_N_20.pipe ; head -c 1048576 < ScalableTestSuite_ScalableTestSuite.Thermal.DistrictHeating.ScaledExperiments.HeatingSystem_N_20.pipe >> ../files/ScalableTestSuite_ScalableTestSuite.Thermal.DistrictHeating.ScaledExperiments.HeatingSystem_N_20.sim & ./ScalableTestSuite_ScalableTestSuite.Thermal.DistrictHeating.ScaledExperiments.HeatingSystem_N_20 -s=ida -abortSlowSimulation -alarm=300 -emit_protected -lv LOG_STATS > ScalableTestSuite_ScalableTestSuite.Thermal.DistrictHeating.ScaledExperiments.HeatingSystem_N_20.pipe 2>&1) diffSimulationResults("ScalableTestSuite_ScalableTestSuite.Thermal.DistrictHeating.ScaledExperiments.HeatingSystem_N_20_res.mat","/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork@2/OpenModelicaLibraryTesting/ReferenceFiles/ScalableTestSuite/ScalableTestSuite.Thermal.DistrictHeating.ScaledExperiments.HeatingSystem_N_20_res.mat","../files/ScalableTestSuite_ScalableTestSuite.Thermal.DistrictHeating.ScaledExperiments.HeatingSystem_N_20.diff",relTol=0.003,relTolDiffMinMax=0.003,rangeDelta=0.001) "" Variables in the reference:Qh[1],Qh[20],Qh[2],Qh[3],Que[1],Que[20],Que[2],Que[3],Tu[1],Tu[20],Tu[2],Tu[3],der(Tu[1]),der(Tu[20]),der(Tu[2]),der(Tu[3]),der(x[1]),der(x[20]),der(x[2]),der(x[3]),time,time,u[1],u[20],u[2],u[3],x[1],x[20],x[2],x[3] Variables in the result:Cd,Cu[10],Cu[11],Cu[12],Cu[13],Cu[14],Cu[15],Cu[16],Cu[17],Cu[18],Cu[19],Cu[1],Cu[20],Cu[2],Cu[3],Cu[4],Cu[5],Cu[6],Cu[7],Cu[8],Cu[9],Gh,Gu,Kp,N,Qh[1],Qh[20],Qh[2],Qh[3],Qmax,Que[1],Que[20],Que[2],Que[3],Td0,Teps,Tu0,Tu[1],Tu[20],Tu[2],Tu[3],a,b,der(Tu[1]),der(Tu[20]),der(Tu[2]),der(Tu[3]),der(x[1]),der(x[20]),der(x[2]),der(x[3]),time,u[1],u[20],u[2],u[3],x[1],x[20],x[2],x[3]