Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr BuildingSystems_BuildingSystems.Fluid.BaseClasses.FlowModels.Validation.BasicFlowFunction_m_flow_DerivativeCheck.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/NcDataReader2 2.5.1-master/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildingSystems 2.0.0-master/package.mo", uses=false) Using package BuildingSystems with version 2.0.0-beta (/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildingSystems 2.0.0-master/package.mo) Using package NcDataReader2 with version 2.5.1 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/NcDataReader2 2.5.1-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(BuildingSystems.Fluid.BaseClasses.FlowModels.Validation.BasicFlowFunction_m_flow_DerivativeCheck,tolerance=1e-08,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="BuildingSystems_BuildingSystems.Fluid.BaseClasses.FlowModels.Validation.BasicFlowFunction_m_flow_DerivativeCheck") translateModel(BuildingSystems.Fluid.BaseClasses.FlowModels.Validation.BasicFlowFunction_m_flow_DerivativeCheck,tolerance=1e-08,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="BuildingSystems_BuildingSystems.Fluid.BaseClasses.FlowModels.Validation.BasicFlowFunction_m_flow_DerivativeCheck") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.0008672/0.0008672, allocations: 99.86 kB / 15.05 MB, free: 1.105 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.0008626/0.0008626, allocations: 177.3 kB / 15.94 MB, free: 228 kB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.177/1.177, allocations: 223.2 MB / 239.9 MB, free: 5.309 MB / 190.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/NcDataReader2 2.5.1-master/package.mo): time 0.001608/0.001608, allocations: 259.1 kB / 291.2 MB, free: 1.879 MB / 238.1 MB [/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildingSystems 2.0.0-master/Buildings/Airvolumes/Parameter/package.mo:5:3-5:34:writable] Warning: Got element f_alp that was not referenced in the package.order file. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildingSystems 2.0.0-master/Buildings/Airvolumes/Parameter/package.mo:6:3-6:35:writable] Warning: Elements in the package.mo-file need to be in the same relative order as the package.order file. Got element named f_lay but it was already added because it was not the next element in the list at that time. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildingSystems 2.0.0-master/Buildings/Airvolumes/Parameter/package.mo:6:3-6:35:writable] Warning: Got element f_lay that was not referenced in the package.order file. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildingSystems 2.0.0-master/Buildings/Airvolumes/Parameter/package.mo:7:3-7:37:writable] Warning: Elements in the package.mo-file need to be in the same relative order as the package.order file. Got element named f_loss but it was already added because it was not the next element in the list at that time. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildingSystems 2.0.0-master/Buildings/Airvolumes/Parameter/package.mo:7:3-7:37:writable] Warning: Got element f_loss that was not referenced in the package.order file. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildingSystems 2.0.0-master/Buildings/Airvolumes/Parameter/package.mo:8:3-8:33:writable] Warning: Elements in the package.mo-file need to be in the same relative order as the package.order file. Got element named f_pv but it was already added because it was not the next element in the list at that time. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildingSystems 2.0.0-master/Buildings/Airvolumes/Parameter/package.mo:8:3-8:33:writable] Warning: Got element f_pv that was not referenced in the package.order file. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildingSystems 2.0.0-master/Buildings/Airvolumes/Parameter/package.mo:2:1-34:14:writable] Warning: f_pv was referenced in the package.order file, but was not found in package.mo, f_pv/package.mo or f_pv.mo. Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildingSystems 2.0.0-master/package.mo): time 0.7392/0.7392, allocations: 144.6 MB / 487 MB, free: 7.18 MB / 350.1 MB Notification: Performance of FrontEnd - loaded program: time 0.0003675/0.0003677, allocations: 16.19 kB / 0.5683 GB, free: 38.77 MB / 430.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.1186/0.1189, allocations: 83.09 MB / 0.6494 GB, free: 3.734 MB / 446.1 MB Notification: Performance of NFInst.instantiate(BuildingSystems.Fluid.BaseClasses.FlowModels.Validation.BasicFlowFunction_m_flow_DerivativeCheck): time 0.001532/0.1205, allocations: 0.9812 MB / 0.6504 GB, free: 2.742 MB / 446.1 MB Notification: Performance of NFInst.instExpressions: time 0.0006586/0.1212, allocations: 331.1 kB / 0.6507 GB, free: 2.422 MB / 446.1 MB Notification: Performance of NFInst.updateImplicitVariability: time 3.35e-05/0.1213, allocations: 0 / 0.6507 GB, free: 2.422 MB / 446.1 MB Notification: Performance of NFTyping.typeComponents: time 1.566e-05/0.1213, allocations: 0 / 0.6507 GB, free: 2.422 MB / 446.1 MB Notification: Performance of NFTyping.typeBindings: time 3.891e-05/0.1213, allocations: 0 / 0.6507 GB, free: 2.422 MB / 446.1 MB Notification: Performance of NFTyping.typeClassSections: time 0.0004266/0.1218, allocations: 68.92 kB / 0.6508 GB, free: 2.355 MB / 446.1 MB Notification: Performance of NFFlatten.flatten: time 4.755e-05/0.1218, allocations: 11.98 kB / 0.6508 GB, free: 2.344 MB / 446.1 MB Notification: Performance of NFFlatten.resolveConnections: time 4.511e-05/0.1219, allocations: 0.5312 kB / 0.6508 GB, free: 2.344 MB / 446.1 MB Notification: Performance of NFEvalConstants.evaluate: time 3.567e-05/0.1219, allocations: 12.91 kB / 0.6508 GB, free: 2.332 MB / 446.1 MB Notification: Performance of NFSimplifyModel.simplify: time 5.294e-05/0.122, allocations: 7.984 kB / 0.6508 GB, free: 2.324 MB / 446.1 MB Notification: Performance of NFPackage.collectConstants: time 1.267e-05/0.122, allocations: 1.688 kB / 0.6508 GB, free: 2.324 MB / 446.1 MB Notification: Performance of NFFlatten.collectFunctions: time 0.0002673/0.1223, allocations: 179.7 kB / 0.651 GB, free: 2.148 MB / 446.1 MB Notification: Performance of NFScalarize.scalarize: time 1.137e-05/0.1223, allocations: 8 kB / 0.651 GB, free: 2.141 MB / 446.1 MB Notification: Performance of NFVerifyModel.verify: time 2.228e-05/0.1223, allocations: 25.7 kB / 0.651 GB, free: 2.109 MB / 446.1 MB Notification: Performance of NFConvertDAE.convert: time 0.0001233/0.1224, allocations: 47.94 kB / 0.6511 GB, free: 2.062 MB / 446.1 MB Notification: Performance of FrontEnd - DAE generated: time 2.094e-06/0.1225, allocations: 0.75 kB / 0.6511 GB, free: 2.062 MB / 446.1 MB Notification: Performance of FrontEnd: time 1.212e-06/0.1225, allocations: 0 / 0.6511 GB, free: 2.062 MB / 446.1 MB Notification: Performance of Transformations before backend: time 4.388e-06/0.1225, allocations: 0.5938 kB / 0.6511 GB, free: 2.062 MB / 446.1 MB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 4 * Number of variables: 4 Notification: Performance of Generate backend data structure: time 0.0003601/0.1228, allocations: 345 kB / 0.6514 GB, free: 1.68 MB / 446.1 MB Notification: Performance of prepare preOptimizeDAE: time 3.552e-05/0.1229, allocations: 11.97 kB / 0.6514 GB, free: 1.668 MB / 446.1 MB Notification: Performance of preOpt normalInlineFunction (simulation): time 3.332e-05/0.1229, allocations: 4 kB / 0.6514 GB, free: 1.664 MB / 446.1 MB Notification: Performance of preOpt evaluateParameters (simulation): time 0.000115/0.123, allocations: 175.5 kB / 0.6516 GB, free: 1.453 MB / 446.1 MB Notification: Performance of preOpt simplifyIfEquations (simulation): time 1.365e-05/0.1231, allocations: 0 / 0.6516 GB, free: 1.453 MB / 446.1 MB Notification: Performance of preOpt expandDerOperator (simulation): time 2.513e-05/0.1231, allocations: 8.75 kB / 0.6516 GB, free: 1.445 MB / 446.1 MB Notification: Performance of preOpt clockPartitioning (simulation): time 0.0001017/0.1232, allocations: 34.28 kB / 0.6516 GB, free: 1.406 MB / 446.1 MB Notification: Performance of preOpt findStateOrder (simulation): time 6.673e-06/0.1232, allocations: 0 / 0.6516 GB, free: 1.406 MB / 446.1 MB Notification: Performance of preOpt replaceEdgeChange (simulation): time 1.126e-05/0.1232, allocations: 5.031 kB / 0.6516 GB, free: 1.402 MB / 446.1 MB Notification: Performance of preOpt inlineArrayEqn (simulation): time 5.26e-06/0.1232, allocations: 4 kB / 0.6516 GB, free: 1.398 MB / 446.1 MB Notification: Performance of preOpt removeEqualRHS (simulation): time 3.795e-05/0.1233, allocations: 4 kB / 0.6516 GB, free: 1.395 MB / 446.1 MB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.0001682/0.1235, allocations: 163.3 kB / 0.6518 GB, free: 1.188 MB / 446.1 MB Notification: Performance of preOpt comSubExp (simulation): time 0.0001729/0.1236, allocations: 51.27 kB / 0.6518 GB, free: 1.129 MB / 446.1 MB Notification: Performance of preOpt evalFunc (simulation): time 2.233e-05/0.1237, allocations: 1.25 kB / 0.6518 GB, free: 1.129 MB / 446.1 MB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 2.156e-05/0.1237, allocations: 34.5 kB / 0.6519 GB, free: 1.086 MB / 446.1 MB Notification: Performance of pre-optimization done (n=4): time 1.633e-06/0.1237, allocations: 0.6562 kB / 0.6519 GB, free: 1.086 MB / 446.1 MB Notification: Performance of matching and sorting (n=6): time 0.000592/0.1243, allocations: 310.9 kB / 0.6522 GB, free: 0.7305 MB / 446.1 MB Notification: Performance of inlineWhenForInitialization (initialization): time 3.612e-05/0.1243, allocations: 55.94 kB / 0.6522 GB, free: 0.6641 MB / 446.1 MB Notification: Performance of selectInitializationVariablesDAE (initialization): time 6.078e-05/0.1244, allocations: 90.48 kB / 0.6523 GB, free: 0.5664 MB / 446.1 MB Notification: Performance of collectPreVariables (initialization): time 1.433e-05/0.1244, allocations: 30.42 kB / 0.6523 GB, free: 0.5312 MB / 446.1 MB Notification: Performance of collectInitialEqns (initialization): time 3.593e-05/0.1245, allocations: 84.14 kB / 0.6524 GB, free: 456 kB / 446.1 MB Notification: Performance of collectInitialBindings (initialization): time 2.608e-05/0.1245, allocations: 20.52 kB / 0.6524 GB, free: 436 kB / 446.1 MB Notification: Performance of simplifyInitialFunctions (initialization): time 4.579e-06/0.1245, allocations: 8 kB / 0.6524 GB, free: 428 kB / 446.1 MB Notification: Performance of setup shared object (initialization): time 9.018e-05/0.1246, allocations: 311.4 kB / 0.6527 GB, free: 108 kB / 446.1 MB Notification: Performance of preBalanceInitialSystem (initialization): time 2.471e-05/0.1247, allocations: 17.95 kB / 0.6528 GB, free: 92 kB / 446.1 MB Notification: Performance of partitionIndependentBlocks (initialization): time 1.893e-05/0.1247, allocations: 12 kB / 0.6528 GB, free: 80 kB / 446.1 MB Notification: Performance of analyzeInitialSystem (initialization): time 2.678e-05/0.1247, allocations: 12 kB / 0.6528 GB, free: 68 kB / 446.1 MB Notification: Performance of solveInitialSystemEqSystem (initialization): time 2.164e-06/0.1247, allocations: 3.953 kB / 0.6528 GB, free: 64 kB / 446.1 MB Notification: Performance of matching and sorting (n=7) (initialization): time 0.0001038/0.1248, allocations: 69.62 kB / 0.6528 GB, free: 15.98 MB / 462.1 MB Notification: Performance of prepare postOptimizeDAE: time 1.301e-05/0.1248, allocations: 4.5 kB / 0.6528 GB, free: 15.98 MB / 462.1 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 3.837e-06/0.1249, allocations: 0.875 kB / 0.6528 GB, free: 15.98 MB / 462.1 MB Notification: Performance of postOpt tearingSystem (initialization): time 1.147e-05/0.1249, allocations: 0 / 0.6528 GB, free: 15.98 MB / 462.1 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 4.889e-05/0.1249, allocations: 16.69 kB / 0.6529 GB, free: 15.97 MB / 462.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 4.909e-06/0.1249, allocations: 0 / 0.6529 GB, free: 15.97 MB / 462.1 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 1.791e-05/0.125, allocations: 6.094 kB / 0.6529 GB, free: 15.96 MB / 462.1 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 4.929e-06/0.125, allocations: 0 / 0.6529 GB, free: 15.96 MB / 462.1 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 (7): * Single equations (assignments): 7 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (linear and non-linear blocks): 0 * Torn equation systems: 0 * Mixed (continuous/discrete) equation systems: 0 Notification: Performance of prepare postOptimizeDAE: time 7.241e-05/0.125, allocations: 113.8 kB / 0.653 GB, free: 15.84 MB / 462.1 MB Notification: Performance of postOpt lateInlineFunction (simulation): time 1.092e-05/0.1251, allocations: 7.891 kB / 0.653 GB, free: 15.84 MB / 462.1 MB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.0001234/0.1252, allocations: 82.14 kB / 0.6531 GB, free: 15.75 MB / 462.1 MB Notification: Performance of postOpt inlineArrayEqn (simulation): time 3.637e-06/0.1252, allocations: 4.625 kB / 0.6531 GB, free: 15.75 MB / 462.1 MB Notification: Performance of postOpt constantLinearSystem (simulation): time 3.287e-06/0.1252, allocations: 0 / 0.6531 GB, free: 15.75 MB / 462.1 MB Notification: Performance of postOpt simplifysemiLinear (simulation): time 2.585e-06/0.1252, allocations: 1.312 kB / 0.6531 GB, free: 15.75 MB / 462.1 MB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.0002902/0.1255, allocations: 311.4 kB / 0.6534 GB, free: 15.38 MB / 462.1 MB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 1.953e-06/0.1255, allocations: 1 kB / 0.6534 GB, free: 15.38 MB / 462.1 MB Notification: Performance of postOpt solveSimpleEquations (simulation): time 5.817e-05/0.1256, allocations: 12 kB / 0.6534 GB, free: 15.37 MB / 462.1 MB Notification: Performance of postOpt tearingSystem (simulation): time 2.855e-06/0.1256, allocations: 0.6562 kB / 0.6534 GB, free: 15.37 MB / 462.1 MB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 8.105e-06/0.1256, allocations: 3.984 kB / 0.6534 GB, free: 15.37 MB / 462.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 1.833e-06/0.1256, allocations: 2.469 kB / 0.6534 GB, free: 15.37 MB / 462.1 MB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 2.445e-06/0.1256, allocations: 4 kB / 0.6534 GB, free: 15.36 MB / 462.1 MB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.0001763/0.1258, allocations: 192 kB / 0.6536 GB, free: 15.15 MB / 462.1 MB Notification: Performance of postOpt removeConstants (simulation): time 4.591e-05/0.1259, allocations: 85.09 kB / 0.6537 GB, free: 15.05 MB / 462.1 MB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 1.253e-05/0.1259, allocations: 4.031 kB / 0.6537 GB, free: 15.05 MB / 462.1 MB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 6.63e-05/0.126, allocations: 0 / 0.6537 GB, free: 15.05 MB / 462.1 MB Notification: Performance of postOpt findZeroCrossings (simulation): time 1.944e-05/0.126, allocations: 4.625 kB / 0.6537 GB, free: 15.04 MB / 462.1 MB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 5.08e-06/0.126, allocations: 0 / 0.6537 GB, free: 15.04 MB / 462.1 MB Notification: Performance of sorting global known variables: time 3.582e-05/0.126, allocations: 88.98 kB / 0.6537 GB, free: 14.96 MB / 462.1 MB Notification: Performance of sort global known variables: time 9e-08/0.126, allocations: 0 / 0.6537 GB, free: 14.96 MB / 462.1 MB Notification: Performance of remove unused functions: time 0.00023/0.1263, allocations: 20 kB / 0.6538 GB, free: 14.94 MB / 462.1 MB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 2 * Number of states: 1 (dp_comp) * 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 (6): * Single equations (assignments): 6 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (linear and non-linear blocks): 0 * Torn equation systems: 0 * Mixed (continuous/discrete) equation systems: 0 Notification: Performance of Backend phase and start with SimCode phase: time 0.0001607/0.1264, allocations: 120 kB / 0.6539 GB, free: 14.81 MB / 462.1 MB Notification: Performance of simCode: created initialization part: time 9.278e-05/0.1265, allocations: 40.02 kB / 0.6539 GB, free: 14.77 MB / 462.1 MB Notification: Performance of simCode: created event and clocks part: time 2.465e-06/0.1265, allocations: 0 / 0.6539 GB, free: 14.77 MB / 462.1 MB Notification: Performance of simCode: created simulation system equations: time 3.427e-05/0.1266, allocations: 19.94 kB / 0.6539 GB, free: 14.75 MB / 462.1 MB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.0001337/0.1267, allocations: 3.953 kB / 0.6539 GB, free: 14.75 MB / 462.1 MB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.0004138/0.1271, allocations: 226.6 kB / 0.6542 GB, free: 14.5 MB / 462.1 MB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0002527/0.1274, allocations: 0.683 MB / 0.6548 GB, free: 13.79 MB / 462.1 MB Notification: Performance of simCode: alias equations: time 3.291e-05/0.1275, allocations: 7.938 kB / 0.6548 GB, free: 13.78 MB / 462.1 MB Notification: Performance of simCode: all other stuff during SimCode phase: time 2.002e-05/0.1275, allocations: 15.42 kB / 0.6548 GB, free: 13.77 MB / 462.1 MB Notification: Performance of SimCode: time 2.2e-07/0.1275, allocations: 4 kB / 0.6549 GB, free: 13.76 MB / 462.1 MB Notification: Performance of Templates: time 0.0025/0.13, allocations: 0.62 MB / 0.6555 GB, free: 13.18 MB / 462.1 MB make -j1 -f BuildingSystems_BuildingSystems.Fluid.BaseClasses.FlowModels.Validation.BasicFlowFunction_m_flow_DerivativeCheck.makefile Environment - environmentSimulation: (rm -f BuildingSystems_BuildingSystems.Fluid.BaseClasses.FlowModels.Validation.BasicFlowFunction_m_flow_DerivativeCheck.pipe ; mkfifo BuildingSystems_BuildingSystems.Fluid.BaseClasses.FlowModels.Validation.BasicFlowFunction_m_flow_DerivativeCheck.pipe ; head -c 1048576 < BuildingSystems_BuildingSystems.Fluid.BaseClasses.FlowModels.Validation.BasicFlowFunction_m_flow_DerivativeCheck.pipe >> ../files/BuildingSystems_BuildingSystems.Fluid.BaseClasses.FlowModels.Validation.BasicFlowFunction_m_flow_DerivativeCheck.sim & ./BuildingSystems_BuildingSystems.Fluid.BaseClasses.FlowModels.Validation.BasicFlowFunction_m_flow_DerivativeCheck -abortSlowSimulation -alarm=480 -lv LOG_STATS > BuildingSystems_BuildingSystems.Fluid.BaseClasses.FlowModels.Validation.BasicFlowFunction_m_flow_DerivativeCheck.pipe 2>&1) Environment - environmentSimulation: