Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr IBPSA_latest_IBPSA.Fluid.Sources.Examples.TraceSubstancesFlowSource.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/IBPSA 4.0.0-master/package.mo", uses=false) Using package IBPSA with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/IBPSA 4.0.0-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: "" <> buildModelFMU(IBPSA.Fluid.Sources.Examples.TraceSubstancesFlowSource,fileNamePrefix="IBPSA_latest_IBPSA_Fluid_Sources_Examples_TraceSubstancesFlowSource",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(IBPSA.Fluid.Sources.Examples.TraceSubstancesFlowSource,fileNamePrefix="IBPSA_latest_IBPSA_Fluid_Sources_Examples_TraceSubstancesFlowSource",fmuType="me",version="2.0",platforms={"static"}) Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.0007108/0.0007108, allocations: 88.17 kB / 15.7 MB, free: 460 kB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.0007539/0.0007539, allocations: 173.1 kB / 16.58 MB, free: 6.797 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.143/1.143, allocations: 223.3 MB / 240.6 MB, free: 5.445 MB / 190.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/IBPSA 4.0.0-master/package.mo): time 0.5946/0.5946, allocations: 113.7 MB / 405.5 MB, free: 4.605 MB / 334.1 MB Notification: Performance of FrontEnd - loaded program: time 0.0002579/0.0002579, allocations: 12 kB / 493.2 MB, free: 8.598 MB / 350.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.1138/0.1141, allocations: 77.11 MB / 0.5569 GB, free: 11.69 MB / 430.1 MB Notification: Performance of NFInst.instantiate(IBPSA.Fluid.Sources.Examples.TraceSubstancesFlowSource): time 0.7385/0.8527, allocations: 278.7 MB / 0.8291 GB, free: 8.812 MB / 0.6231 GB Notification: Performance of NFInst.instExpressions: time 0.02426/0.877, allocations: 24.16 MB / 0.8527 GB, free: 8.492 MB / 0.6231 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.002924/0.8799, allocations: 105.6 kB / 0.8528 GB, free: 8.492 MB / 0.6231 GB Notification: Performance of NFTyping.typeComponents: time 0.002635/0.8826, allocations: 1.206 MB / 0.854 GB, free: 8.473 MB / 0.6231 GB Notification: Performance of NFTyping.typeBindings: time 0.00962/0.8922, allocations: 4.37 MB / 0.8582 GB, free: 8.285 MB / 0.6231 GB Notification: Performance of NFTyping.typeClassSections: time 0.004758/0.897, allocations: 1.965 MB / 0.8601 GB, free: 8.234 MB / 0.6231 GB Notification: Performance of NFFlatten.flatten: time 0.008709/0.9057, allocations: 10.44 MB / 0.8703 GB, free: 8.215 MB / 0.6231 GB Notification: Performance of NFFlatten.resolveConnections: time 0.003628/0.9093, allocations: 2.539 MB / 0.8728 GB, free: 23.85 MB / 0.6387 GB Notification: Performance of NFEvalConstants.evaluate: time 0.005497/0.9148, allocations: 3.199 MB / 0.8759 GB, free: 23.82 MB / 0.6387 GB Notification: Performance of NFSimplifyModel.simplify: time 0.003936/0.9188, allocations: 2.817 MB / 0.8787 GB, free: 23.82 MB / 0.6387 GB Notification: Performance of NFPackage.collectConstants: time 0.0006692/0.9195, allocations: 156.2 kB / 0.8788 GB, free: 23.82 MB / 0.6387 GB Notification: Performance of NFFlatten.collectFunctions: time 0.005762/0.9252, allocations: 2.409 MB / 0.8812 GB, free: 23.77 MB / 0.6387 GB Notification: Performance of NFScalarize.scalarize: time 0.001669/0.9269, allocations: 1.429 MB / 0.8826 GB, free: 23.77 MB / 0.6387 GB Notification: Performance of NFVerifyModel.verify: time 0.00137/0.9283, allocations: 0.7633 MB / 0.8833 GB, free: 23.74 MB / 0.6387 GB Notification: Performance of NFConvertDAE.convert: time 0.004258/0.9325, allocations: 4.743 MB / 0.888 GB, free: 21.59 MB / 0.6387 GB Notification: Performance of FrontEnd - DAE generated: time 3.416e-06/0.9326, allocations: 4 kB / 0.888 GB, free: 21.59 MB / 0.6387 GB Notification: Performance of FrontEnd: time 1.553e-06/0.9326, allocations: 0 / 0.888 GB, free: 21.59 MB / 0.6387 GB Notification: Performance of Transformations before backend: time 0.0001428/0.9327, allocations: 0 / 0.888 GB, free: 21.59 MB / 0.6387 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 693 * Number of variables: 693 Notification: Performance of Generate backend data structure: time 0.00538/0.9381, allocations: 3.487 MB / 0.8914 GB, free: 19.46 MB / 0.6387 GB Notification: Performance of prepare preOptimizeDAE: time 4.412e-05/0.9382, allocations: 9.156 kB / 0.8914 GB, free: 19.46 MB / 0.6387 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.0004835/0.9386, allocations: 394.8 kB / 0.8918 GB, free: 19.34 MB / 0.6387 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.004452/0.9431, allocations: 0.9401 MB / 0.8927 GB, free: 18.96 MB / 0.6387 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.003197/0.9463, allocations: 2.396 MB / 0.895 GB, free: 17.96 MB / 0.6387 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0001608/0.9465, allocations: 274.2 kB / 0.8953 GB, free: 17.89 MB / 0.6387 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0002853/0.9468, allocations: 291.9 kB / 0.8956 GB, free: 17.88 MB / 0.6387 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.004014/0.9508, allocations: 3.358 MB / 0.8988 GB, free: 16.96 MB / 0.6387 GB Notification: Performance of preOpt findStateOrder (simulation): time 4.59e-05/0.9509, allocations: 6.219 kB / 0.8989 GB, free: 16.96 MB / 0.6387 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0001945/0.9511, allocations: 112.2 kB / 0.899 GB, free: 16.96 MB / 0.6387 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 7.918e-05/0.9511, allocations: 111.6 kB / 0.8991 GB, free: 16.95 MB / 0.6387 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.003302/0.9544, allocations: 2.801 MB / 0.9018 GB, free: 16.46 MB / 0.6387 GB Warning: The model contains alias variables with redundant start and/or conflicting nominal values. It is recommended to resolve the conflicts, because otherwise the system could be hard to solve. To print the conflicting alias sets and the chosen candidates please use -d=aliasConflicts. Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.01107/0.9655, allocations: 13.29 MB / 0.9148 GB, free: 7.25 MB / 0.6387 GB Notification: Performance of preOpt comSubExp (simulation): time 0.001992/0.9675, allocations: 1.717 MB / 0.9165 GB, free: 7.004 MB / 0.6387 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.001179/0.9687, allocations: 1.123 MB / 0.9176 GB, free: 6.855 MB / 0.6387 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0003857/0.9691, allocations: 340.3 kB / 0.9179 GB, free: 6.543 MB / 0.6387 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 3.134e-05/0.9692, allocations: 56.03 kB / 0.9179 GB, free: 6.504 MB / 0.6387 GB Notification: Performance of pre-optimization done (n=186): time 3.256e-06/0.9692, allocations: 0 / 0.9179 GB, free: 6.504 MB / 0.6387 GB Notification: Performance of matching and sorting (n=186): time 0.003796/0.973, allocations: 2.784 MB / 0.9206 GB, free: 5.637 MB / 0.6387 GB Notification: Performance of inlineWhenForInitialization (initialization): time 3.952e-05/0.973, allocations: 73.41 kB / 0.9207 GB, free: 5.551 MB / 0.6387 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.001953/0.975, allocations: 1.974 MB / 0.9226 GB, free: 4.051 MB / 0.6387 GB Notification: Performance of collectPreVariables (initialization): time 0.0001165/0.9751, allocations: 72.7 kB / 0.9227 GB, free: 4.004 MB / 0.6387 GB Notification: Performance of collectInitialEqns (initialization): time 0.0007838/0.9759, allocations: 1.409 MB / 0.9241 GB, free: 3.145 MB / 0.6387 GB Notification: Performance of collectInitialBindings (initialization): time 0.0004416/0.9763, allocations: 0.6527 MB / 0.9247 GB, free: 2.586 MB / 0.6387 GB Notification: Performance of simplifyInitialFunctions (initialization): time 9.453e-05/0.9764, allocations: 37.12 kB / 0.9248 GB, free: 2.578 MB / 0.6387 GB Notification: Performance of setup shared object (initialization): time 0.0001531/0.9766, allocations: 391 kB / 0.9251 GB, free: 2.223 MB / 0.6387 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.001135/0.9777, allocations: 0.8078 MB / 0.9259 GB, free: 1.695 MB / 0.6387 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.001437/0.9792, allocations: 1.436 MB / 0.9273 GB, free: 352 kB / 0.6387 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.001298/0.9805, allocations: 1.058 MB / 0.9284 GB, free: 15.7 MB / 0.6544 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 8.596e-06/0.9805, allocations: 6.719 kB / 0.9284 GB, free: 15.7 MB / 0.6544 GB Notification: Performance of matching and sorting (n=261) (initialization): time 0.0031/0.9836, allocations: 2.499 MB / 0.9308 GB, free: 13.98 MB / 0.6544 GB Notification: Performance of prepare postOptimizeDAE: time 0.0002254/0.9839, allocations: 480 kB / 0.9313 GB, free: 13.39 MB / 0.6544 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.482e-05/0.9839, allocations: 16 kB / 0.9313 GB, free: 13.37 MB / 0.6544 GB Notification: Performance of postOpt tearingSystem (initialization): time 2.881e-05/0.9839, allocations: 24 kB / 0.9313 GB, free: 13.35 MB / 0.6544 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.002204/0.9861, allocations: 0.5641 MB / 0.9319 GB, free: 12.83 MB / 0.6544 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.0019/0.988, allocations: 4.158 MB / 0.9359 GB, free: 8.574 MB / 0.6544 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.002396/0.9904, allocations: 409.8 kB / 0.9363 GB, free: 8.207 MB / 0.6544 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001346/0.9906, allocations: 92.72 kB / 0.9364 GB, free: 8.133 MB / 0.6544 GB Notification: Performance of prepare postOptimizeDAE: time 7.013e-06/0.9906, allocations: 4 kB / 0.9364 GB, free: 8.129 MB / 0.6544 GB Notification: Performance of postOpt replaceHomotopyWithSimplified (initialization): time 0.00285/0.9935, allocations: 2.233 MB / 0.9386 GB, free: 6.711 MB / 0.6544 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.534e-05/0.9935, allocations: 12.91 kB / 0.9386 GB, free: 6.699 MB / 0.6544 GB Notification: Performance of postOpt tearingSystem (initialization): time 2.025e-05/0.9935, allocations: 24 kB / 0.9386 GB, free: 6.676 MB / 0.6544 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001557/0.9951, allocations: 487.1 kB / 0.9391 GB, free: 6.246 MB / 0.6544 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 2.672e-05/0.9951, allocations: 38.22 kB / 0.9391 GB, free: 6.215 MB / 0.6544 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.002072/0.9972, allocations: 384.7 kB / 0.9395 GB, free: 5.871 MB / 0.6544 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001238/0.9973, allocations: 89.11 kB / 0.9396 GB, free: 5.801 MB / 0.6544 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 56 * 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 (261): * Single equations (assignments): 254 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (linear and non-linear blocks): 7 * Torn equation systems: 0 * Mixed (continuous/discrete) equation systems: 0 Notification: Equation system details: * Constant Jacobian: 0 * Linear Jacobian (size,density): 0 * Non-linear Jacobian: 7 {1,1,1,1,1,1,1} * Without analytic Jacobian: 0 Notification: Performance of prepare postOptimizeDAE: time 0.001218/0.9985, allocations: 0.8611 MB / 0.9404 GB, free: 5.227 MB / 0.6544 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0003167/0.9989, allocations: 271.8 kB / 0.9407 GB, free: 4.961 MB / 0.6544 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.002888/1.002, allocations: 2.151 MB / 0.9428 GB, free: 3.547 MB / 0.6544 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.292e-05/1.002, allocations: 16 kB / 0.9428 GB, free: 3.531 MB / 0.6544 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 7.294e-06/1.002, allocations: 7.891 kB / 0.9428 GB, free: 3.523 MB / 0.6544 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.002269/1.004, allocations: 1.929 MB / 0.9447 GB, free: 2.125 MB / 0.6544 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.006386/1.01, allocations: 5.24 MB / 0.9498 GB, free: 14.48 MB / 0.67 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 5.511e-06/1.01, allocations: 0 / 0.9498 GB, free: 14.48 MB / 0.67 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.002059/1.013, allocations: 0.503 MB / 0.9503 GB, free: 14.01 MB / 0.67 GB Notification: Performance of postOpt tearingSystem (simulation): time 1.296e-05/1.013, allocations: 8 kB / 0.9503 GB, free: 14 MB / 0.67 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0001055/1.013, allocations: 53.17 kB / 0.9503 GB, free: 13.98 MB / 0.67 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.001924/1.015, allocations: 4.13 MB / 0.9544 GB, free: 9.742 MB / 0.67 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 3.657e-06/1.015, allocations: 4 kB / 0.9544 GB, free: 9.738 MB / 0.67 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.003967/1.019, allocations: 3.28 MB / 0.9576 GB, free: 7.398 MB / 0.67 GB Notification: Performance of postOpt removeConstants (simulation): time 0.000962/1.02, allocations: 0.5803 MB / 0.9581 GB, free: 6.906 MB / 0.67 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0002689/1.02, allocations: 42.56 kB / 0.9582 GB, free: 6.891 MB / 0.67 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.001687/1.022, allocations: 253.5 kB / 0.9584 GB, free: 6.672 MB / 0.67 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.000169/1.022, allocations: 113.3 kB / 0.9585 GB, free: 6.574 MB / 0.67 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0001137/1.022, allocations: 70.47 kB / 0.9586 GB, free: 6.52 MB / 0.67 GB Notification: Performance of sorting global known variables: time 0.001558/1.023, allocations: 1.32 MB / 0.9599 GB, free: 5.535 MB / 0.67 GB Notification: Performance of sort global known variables: time 2.71e-07/1.023, allocations: 0 / 0.9599 GB, free: 5.535 MB / 0.67 GB Notification: Performance of remove unused functions: time 0.003252/1.027, allocations: 1.735 MB / 0.9616 GB, free: 3.895 MB / 0.67 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 13 * Number of states: 20 (vol.dynBal.medium.Xi[1],vol.dynBal.U,vol.dynBal.m,vol.dynBal.mC[1],vol1.dynBal.medium.Xi[1],vol1.dynBal.U,vol1.dynBal.m,vol1.dynBal.mC[1],vol2.dynBal.medium.Xi[1],vol2.dynBal.U,vol2.dynBal.m,vol2.dynBal.mC[1],vol3.dynBal.medium.Xi[1],vol3.dynBal.U,vol3.dynBal.m,vol3.dynBal.mC[1],vol4.dynBal.medium.Xi[1],vol4.dynBal.U,vol4.dynBal.m,vol4.dynBal.mC[1]) * 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 (186): * Single equations (assignments): 179 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (linear and non-linear blocks): 7 * Torn equation systems: 0 * Mixed (continuous/discrete) equation systems: 0 Notification: Equation system details: * Constant Jacobian: 0 * Linear Jacobian (size,density): 0 * Non-linear Jacobian: 7 {1,1,1,1,1,1,1} * Without analytic Jacobian: 0 Notification: Performance of Backend phase and start with SimCode phase: time 0.004531/1.031, allocations: 4.102 MB / 0.9656 GB, free: 0.8086 MB / 0.67 GB Notification: Performance of simCode: created initialization part: time 0.005068/1.036, allocations: 3.343 MB / 0.9689 GB, free: 14.5 MB / 0.6856 GB Notification: Performance of simCode: created event and clocks part: time 5.26e-06/1.036, allocations: 4 kB / 0.9689 GB, free: 14.49 MB / 0.6856 GB Notification: Performance of simCode: created simulation system equations: time 0.001481/1.038, allocations: 1.044 MB / 0.9699 GB, free: 13.78 MB / 0.6856 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.005767/1.044, allocations: 1.618 MB / 0.9715 GB, free: 12.45 MB / 0.6856 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.02458/1.068, allocations: 19.37 MB / 0.9904 GB, free: 10.61 MB / 0.7012 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.001611/1.07, allocations: 2.194 MB / 0.9925 GB, free: 8.516 MB / 0.7012 GB Notification: Performance of simCode: alias equations: time 0.00328/1.073, allocations: 1.119 MB / 0.9936 GB, free: 7.391 MB / 0.7012 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.001288/1.074, allocations: 1.283 MB / 0.9949 GB, free: 7.086 MB / 0.7012 GB Notification: Performance of SimCode: time 4.31e-07/1.074, allocations: 0 / 0.9949 GB, free: 7.086 MB / 0.7012 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.104/1.178, allocations: 78.13 MB / 1.071 GB, free: 9.934 MB / 0.7794 GB Notification: Performance of buildModelFMU: configured platform static using cached values: time 0.0002352/1.179, allocations: 268.3 kB / 1.071 GB, free: 9.562 MB / 0.7794 GB Notification: Performance of buildModelFMU: Generate platform static: time 3.134/4.313, allocations: 0 / 1.071 GB, free: 9.562 MB / 0.7794 GB (rm -f IBPSA_latest_IBPSA.Fluid.Sources.Examples.TraceSubstancesFlowSource.pipe ; mkfifo IBPSA_latest_IBPSA.Fluid.Sources.Examples.TraceSubstancesFlowSource.pipe ; head -c 1048576 < IBPSA_latest_IBPSA.Fluid.Sources.Examples.TraceSubstancesFlowSource.pipe >> ../files/IBPSA_latest_IBPSA.Fluid.Sources.Examples.TraceSubstancesFlowSource.sim & /home/hudson/saved_omc/OMSimulator/install/linux/bin/OMSimulator --tempDir=temp_IBPSA_latest_IBPSA_Fluid_Sources_Examples_TraceSubstancesFlowSource_fmu --startTime=0 --stopTime=600 --timeout=50 --tolerance=1e-06 IBPSA_latest_IBPSA_Fluid_Sources_Examples_TraceSubstancesFlowSource.fmu > IBPSA_latest_IBPSA.Fluid.Sources.Examples.TraceSubstancesFlowSource.pipe 2>&1) Environment - environmentSimulation: