Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr Buildings_8_Buildings.Fluid.Examples.Performance.PressureDrop.SeriesParallelDpOptimised.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 3.2.3+maint.om/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.1.4-maint.8.1.x/package.mo", uses=false) Using package Buildings with version 8.1.4 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.1.4-maint.8.1.x/package.mo) Using package Modelica with version 3.2.3 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+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.Fluid.Examples.Performance.PressureDrop.SeriesParallelDpOptimised,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_8_Buildings.Fluid.Examples.Performance.PressureDrop.SeriesParallelDpOptimised") translateModel(Buildings.Fluid.Examples.Performance.PressureDrop.SeriesParallelDpOptimised,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_8_Buildings.Fluid.Examples.Performance.PressureDrop.SeriesParallelDpOptimised") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.0008297/0.0008299, allocations: 97.56 kB / 15.36 MB, free: 0.7344 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.006588/0.006588, allocations: 169.1 kB / 16.26 MB, free: 6.652 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 1.392/1.392, allocations: 205.4 MB / 222.5 MB, free: 5.551 MB / 174.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.1.4-maint.8.1.x/package.mo): time 1.682/1.682, allocations: 292.7 MB / 0.5502 GB, free: 14.46 MB / 462.1 MB Notification: Modelica requested package Complex of version 3.2.3. Complex 4.0.0 is used instead which states that it is fully compatible without conversion script needed. Notification: Modelica requested package ModelicaServices of version 3.2.3. ModelicaServices 4.0.0 is used instead which states that it is fully compatible without conversion script needed. Notification: Performance of FrontEnd - loaded program: time 0.0005121/0.0005121, allocations: 14.47 kB / 0.6743 GB, free: 25.86 MB / 0.5294 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.2421/0.2426, allocations: 116.3 MB / 0.7879 GB, free: 11.54 MB / 0.6075 GB Notification: Performance of NFInst.instantiate(Buildings.Fluid.Examples.Performance.PressureDrop.SeriesParallelDpOptimised): time 0.6769/0.9196, allocations: 163.4 MB / 0.9474 GB, free: 0.7617 MB / 0.7169 GB Notification: Performance of NFInst.instExpressions: time 0.005933/0.9255, allocations: 4.023 MB / 0.9513 GB, free: 428 kB / 0.7169 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.0006858/0.9263, allocations: 15.06 kB / 0.9514 GB, free: 420 kB / 0.7169 GB Notification: Performance of NFTyping.typeComponents: time 0.000873/0.9272, allocations: 199.3 kB / 0.9515 GB, free: 364 kB / 0.7169 GB Notification: Performance of NFTyping.typeBindings: time 0.002139/0.9293, allocations: 0.6369 MB / 0.9522 GB, free: 224 kB / 0.7169 GB Notification: Performance of NFTyping.typeClassSections: time 0.001778/0.9311, allocations: 426.1 kB / 0.9526 GB, free: 188 kB / 0.7169 GB Notification: Performance of NFFlatten.flatten: time 0.005674/0.9368, allocations: 3.831 MB / 0.9563 GB, free: 15.77 MB / 0.7325 GB Notification: Performance of NFFlatten.resolveConnections: time 0.003426/0.9402, allocations: 2.363 MB / 0.9586 GB, free: 15.37 MB / 0.7325 GB Notification: Performance of NFEvalConstants.evaluate: time 0.00282/0.9431, allocations: 1.119 MB / 0.9597 GB, free: 15.23 MB / 0.7325 GB Notification: Performance of NFSimplifyModel.simplify: time 0.001837/0.9449, allocations: 0.8675 MB / 0.9606 GB, free: 15.18 MB / 0.7325 GB Notification: Performance of NFPackage.collectConstants: time 0.0003443/0.9453, allocations: 46.97 kB / 0.9606 GB, free: 15.18 MB / 0.7325 GB Notification: Performance of NFFlatten.collectFunctions: time 0.002326/0.9476, allocations: 0.8913 MB / 0.9615 GB, free: 15.11 MB / 0.7325 GB Notification: Performance of NFScalarize.scalarize: time 0.0005884/0.9482, allocations: 330.3 kB / 0.9618 GB, free: 15.1 MB / 0.7325 GB Notification: Performance of NFVerifyModel.verify: time 0.001438/0.9497, allocations: 0.5989 MB / 0.9624 GB, free: 15.06 MB / 0.7325 GB Notification: Performance of NFConvertDAE.convert: time 0.002757/0.9525, allocations: 1.581 MB / 0.9639 GB, free: 14.94 MB / 0.7325 GB Notification: Performance of FrontEnd - DAE generated: time 5.249e-06/0.9525, allocations: 0 / 0.9639 GB, free: 14.94 MB / 0.7325 GB Notification: Performance of FrontEnd: time 2.084e-06/0.9525, allocations: 4.531 kB / 0.9639 GB, free: 14.93 MB / 0.7325 GB Notification: Performance of Transformations before backend: time 1.858e-05/0.9525, allocations: 0 / 0.9639 GB, free: 14.93 MB / 0.7325 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 135 * Number of variables: 135 Notification: Performance of Generate backend data structure: time 0.002701/0.9552, allocations: 1.481 MB / 0.9654 GB, free: 14.08 MB / 0.7325 GB Notification: Performance of prepare preOptimizeDAE: time 5.779e-05/0.9553, allocations: 14.89 kB / 0.9654 GB, free: 14.08 MB / 0.7325 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0008705/0.9562, allocations: 201.3 kB / 0.9656 GB, free: 14.01 MB / 0.7325 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.001396/0.9576, allocations: 0.8916 MB / 0.9665 GB, free: 13.47 MB / 0.7325 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 4.507e-05/0.9576, allocations: 47.12 kB / 0.9665 GB, free: 13.47 MB / 0.7325 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001055/0.9577, allocations: 62.78 kB / 0.9666 GB, free: 13.47 MB / 0.7325 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.001477/0.9592, allocations: 0.9917 MB / 0.9675 GB, free: 13.03 MB / 0.7325 GB Notification: Performance of preOpt findStateOrder (simulation): time 3.125e-05/0.9593, allocations: 5.312 kB / 0.9675 GB, free: 13.02 MB / 0.7325 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 7.075e-05/0.9593, allocations: 21.38 kB / 0.9675 GB, free: 13.02 MB / 0.7325 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 1.507e-05/0.9594, allocations: 13.75 kB / 0.9676 GB, free: 13.02 MB / 0.7325 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.001284/0.9607, allocations: 0.8107 MB / 0.9684 GB, free: 12.84 MB / 0.7325 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 0.004734/0.9654, allocations: 4.805 MB / 0.973 GB, free: 9.059 MB / 0.7325 GB Notification: Performance of preOpt comSubExp (simulation): time 0.002202/0.9676, allocations: 4.015 MB / 0.977 GB, free: 4.664 MB / 0.7325 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.000447/0.9681, allocations: 349.2 kB / 0.9773 GB, free: 4.602 MB / 0.7325 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0002697/0.9684, allocations: 200.3 kB / 0.9775 GB, free: 4.398 MB / 0.7325 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.0004985/0.9689, allocations: 329.4 kB / 0.9778 GB, free: 4.258 MB / 0.7325 GB Notification: Performance of preOpt simplifyInStream (simulation): time 0.0003809/0.9693, allocations: 31.2 kB / 0.9778 GB, free: 4.242 MB / 0.7325 GB Notification: Performance of pre-optimization done (n=35): time 1.914e-06/0.9693, allocations: 0 / 0.9778 GB, free: 4.242 MB / 0.7325 GB Notification: Performance of matching and sorting (n=35): time 0.005096/0.9744, allocations: 1.768 MB / 0.9796 GB, free: 3.477 MB / 0.7325 GB Notification: Performance of inlineWhenForInitialization (initialization): time 5.226e-05/0.9744, allocations: 87.05 kB / 0.9796 GB, free: 3.379 MB / 0.7325 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.001548/0.976, allocations: 1.19 MB / 0.9808 GB, free: 3.008 MB / 0.7325 GB Notification: Performance of collectPreVariables (initialization): time 7.153e-05/0.9761, allocations: 38.67 kB / 0.9808 GB, free: 2.977 MB / 0.7325 GB Notification: Performance of collectInitialEqns (initialization): time 0.0004109/0.9765, allocations: 0.507 MB / 0.9813 GB, free: 2.758 MB / 0.7325 GB Notification: Performance of collectInitialBindings (initialization): time 0.000104/0.9766, allocations: 130 kB / 0.9815 GB, free: 2.668 MB / 0.7325 GB Notification: Performance of simplifyInitialFunctions (initialization): time 6.857e-05/0.9767, allocations: 49.31 kB / 0.9815 GB, free: 2.645 MB / 0.7325 GB Notification: Performance of setup shared object (initialization): time 0.0001285/0.9768, allocations: 326.9 kB / 0.9818 GB, free: 2.332 MB / 0.7325 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0003956/0.9772, allocations: 242.2 kB / 0.9821 GB, free: 2.277 MB / 0.7325 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.000611/0.9778, allocations: 0.5591 MB / 0.9826 GB, free: 1.828 MB / 0.7325 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0008954/0.9788, allocations: 0.701 MB / 0.9833 GB, free: 1.477 MB / 0.7325 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 5.129e-06/0.9788, allocations: 7.312 kB / 0.9833 GB, free: 1.473 MB / 0.7325 GB Notification: Performance of matching and sorting (n=58) (initialization): time 0.002389/0.9812, allocations: 1.137 MB / 0.9844 GB, free: 1.059 MB / 0.7325 GB Notification: Performance of prepare postOptimizeDAE: time 0.000187/0.9814, allocations: 275.3 kB / 0.9847 GB, free: 0.7383 MB / 0.7325 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.019e-05/0.9814, allocations: 5 kB / 0.9847 GB, free: 0.7383 MB / 0.7325 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.00126/0.9826, allocations: 394.5 kB / 0.985 GB, free: 0.6172 MB / 0.7325 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0003057/0.983, allocations: 80.16 kB / 0.9851 GB, free: 0.5938 MB / 0.7325 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.001026/0.984, allocations: 1.062 MB / 0.9862 GB, free: 15.94 MB / 0.7481 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001105/0.9851, allocations: 91.19 kB / 0.9862 GB, free: 15.91 MB / 0.7481 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 5.595e-05/0.9852, allocations: 23.41 kB / 0.9863 GB, free: 15.91 MB / 0.7481 GB Notification: Performance of prepare postOptimizeDAE: time 8.726e-06/0.9852, allocations: 8.844 kB / 0.9863 GB, free: 15.9 MB / 0.7481 GB Notification: Performance of postOpt replaceHomotopyWithSimplified (initialization): time 0.00135/0.9866, allocations: 0.8103 MB / 0.9871 GB, free: 15.65 MB / 0.7481 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 6.663e-06/0.9866, allocations: 5.875 kB / 0.9871 GB, free: 15.65 MB / 0.7481 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0005434/0.9871, allocations: 256.4 kB / 0.9873 GB, free: 15.58 MB / 0.7481 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0002998/0.9874, allocations: 75.72 kB / 0.9874 GB, free: 15.56 MB / 0.7481 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.003295/0.9907, allocations: 3.101 MB / 0.9904 GB, free: 13.66 MB / 0.7481 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001052/0.9918, allocations: 90.38 kB / 0.9905 GB, free: 13.62 MB / 0.7481 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 4.329e-05/0.9919, allocations: 23.88 kB / 0.9905 GB, free: 13.61 MB / 0.7481 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 24 * Number of states: 0 () * Number of discrete variables: 5 (pulse_m_flow.count,$PRE.pulse_m_flow.count,pulse_m_flow.T_start,$PRE.pulse_m_flow.T_start,$whenCondition1) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (35): * Single equations (assignments): 33 * Array equations: 0 * Algorithm blocks: 1 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 1 * Mixed (continuous/discrete) equation systems: 0 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): 1 system {(1,22)} Notification: Performance of prepare postOptimizeDAE: time 0.0006862/0.9926, allocations: 479 kB / 0.991 GB, free: 13.27 MB / 0.7481 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0001466/0.9927, allocations: 109.1 kB / 0.9911 GB, free: 13.21 MB / 0.7481 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.00139/0.9941, allocations: 0.8246 MB / 0.9919 GB, free: 12.75 MB / 0.7481 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 4.809e-06/0.9941, allocations: 6.938 kB / 0.9919 GB, free: 12.75 MB / 0.7481 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 2.956e-06/0.9941, allocations: 2.938 kB / 0.9919 GB, free: 12.75 MB / 0.7481 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 6.262e-06/0.9941, allocations: 7.984 kB / 0.9919 GB, free: 12.74 MB / 0.7481 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 postOpt removeSimpleEquations (simulation): time 0.002793/0.9969, allocations: 2.162 MB / 0.994 GB, free: 11.16 MB / 0.7481 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 3.687e-06/0.997, allocations: 4.031 kB / 0.994 GB, free: 11.16 MB / 0.7481 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0002512/0.9972, allocations: 51.52 kB / 0.9941 GB, free: 11.14 MB / 0.7481 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0004431/0.9977, allocations: 213.9 kB / 0.9943 GB, free: 11.04 MB / 0.7481 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 2.669e-05/0.9977, allocations: 11.09 kB / 0.9943 GB, free: 11.03 MB / 0.7481 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.000751/0.9985, allocations: 0.8769 MB / 0.9951 GB, free: 10.32 MB / 0.7481 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 6.452e-06/0.9985, allocations: 18.86 kB / 0.9952 GB, free: 10.31 MB / 0.7481 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.001313/0.9998, allocations: 0.8774 MB / 0.996 GB, free: 9.754 MB / 0.7481 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0005138/1, allocations: 239.8 kB / 0.9962 GB, free: 9.559 MB / 0.7481 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001076/1, allocations: 9.25 kB / 0.9963 GB, free: 9.555 MB / 0.7481 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.000665/1.001, allocations: 71.38 kB / 0.9963 GB, free: 9.52 MB / 0.7481 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 9.633e-05/1.001, allocations: 25.78 kB / 0.9963 GB, free: 9.508 MB / 0.7481 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 3.173e-05/1.001, allocations: 16.7 kB / 0.9964 GB, free: 9.5 MB / 0.7481 GB Notification: Performance of sorting global known variables: time 0.001073/1.002, allocations: 0.8358 MB / 0.9972 GB, free: 9.047 MB / 0.7481 GB Notification: Performance of sort global known variables: time 1.71e-07/1.002, allocations: 0 / 0.9972 GB, free: 9.047 MB / 0.7481 GB Notification: Performance of remove unused functions: time 0.001415/1.004, allocations: 0.5007 MB / 0.9977 GB, free: 8.98 MB / 0.7481 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 8 * Number of states: 0 () * Number of discrete variables: 3 ($whenCondition1,pulse_m_flow.T_start,pulse_m_flow.count) * Number of discrete states: 1 (pulse_m_flow.count) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (22): * Single equations (assignments): 19 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 2 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 1 * Mixed (continuous/discrete) equation systems: 0 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): 1 system {(1,13)} Notification: Performance of Backend phase and start with SimCode phase: time 0.0003976/1.004, allocations: 198.8 kB / 0.9979 GB, free: 8.848 MB / 0.7481 GB Notification: Performance of simCode: created initialization part: time 0.00197/1.006, allocations: 1.17 MB / 0.999 GB, free: 8.137 MB / 0.7481 GB Notification: Performance of simCode: created event and clocks part: time 3.035e-06/1.006, allocations: 0 / 0.999 GB, free: 8.137 MB / 0.7481 GB Notification: Performance of simCode: created simulation system equations: time 0.0004521/1.007, allocations: 258 kB / 0.9992 GB, free: 8.02 MB / 0.7481 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.00363/1.01, allocations: 0.6472 MB / 0.9999 GB, free: 7.691 MB / 0.7481 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.002913/1.013, allocations: 2.196 MB / 1.002 GB, free: 6.285 MB / 0.7481 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0006712/1.014, allocations: 1.218 MB / 1.003 GB, free: 5.336 MB / 0.7481 GB Notification: Performance of simCode: alias equations: time 0.001088/1.015, allocations: 385.9 kB / 1.004 GB, free: 5.16 MB / 0.7481 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0001296/1.015, allocations: 65.09 kB / 1.004 GB, free: 5.152 MB / 0.7481 GB Notification: Performance of SimCode: time 5.61e-07/1.015, allocations: 0 / 1.004 GB, free: 5.152 MB / 0.7481 GB Notification: Performance of Templates: time 0.03423/1.049, allocations: 21.67 MB / 1.025 GB, free: 6.215 MB / 0.7637 GB make -j1 -f Buildings_8_Buildings.Fluid.Examples.Performance.PressureDrop.SeriesParallelDpOptimised.makefile Environment - environmentSimulation: (rm -f Buildings_8_Buildings.Fluid.Examples.Performance.PressureDrop.SeriesParallelDpOptimised.pipe ; mkfifo Buildings_8_Buildings.Fluid.Examples.Performance.PressureDrop.SeriesParallelDpOptimised.pipe ; head -c 1048576 < Buildings_8_Buildings.Fluid.Examples.Performance.PressureDrop.SeriesParallelDpOptimised.pipe >> ../files/Buildings_8_Buildings.Fluid.Examples.Performance.PressureDrop.SeriesParallelDpOptimised.sim & ./Buildings_8_Buildings.Fluid.Examples.Performance.PressureDrop.SeriesParallelDpOptimised -abortSlowSimulation -alarm=480 -lv LOG_STATS > Buildings_8_Buildings.Fluid.Examples.Performance.PressureDrop.SeriesParallelDpOptimised.pipe 2>&1) Environment - environmentSimulation: