Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr Buildings_8_Buildings.Fluid.MixingVolumes.BaseClasses.Validation.MixingVolumeHeatPortAir.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.MixingVolumes.BaseClasses.Validation.MixingVolumeHeatPortAir,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_8_Buildings.Fluid.MixingVolumes.BaseClasses.Validation.MixingVolumeHeatPortAir") translateModel(Buildings.Fluid.MixingVolumes.BaseClasses.Validation.MixingVolumeHeatPortAir,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_8_Buildings.Fluid.MixingVolumes.BaseClasses.Validation.MixingVolumeHeatPortAir") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.0007368/0.0007368, allocations: 91.69 kB / 15.06 MB, free: 1.098 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.000817/0.0008171, allocations: 172.7 kB / 15.95 MB, free: 208 kB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 1.411/1.411, allocations: 205.4 MB / 222.1 MB, free: 5.512 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 1.637/1.637, allocations: 292.7 MB / 0.5499 GB, free: 14.56 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 0.0004915/0.0004916, allocations: 17.53 kB / 0.6737 GB, free: 26.07 MB / 0.5294 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.2329/0.2334, allocations: 116.3 MB / 0.7873 GB, free: 11.94 MB / 0.6075 GB Notification: Performance of NFInst.instantiate(Buildings.Fluid.MixingVolumes.BaseClasses.Validation.MixingVolumeHeatPortAir): time 0.5886/0.822, allocations: 166.5 MB / 0.9499 GB, free: 21.3 MB / 0.7325 GB Notification: Performance of NFInst.instExpressions: time 0.008582/0.8307, allocations: 6.193 MB / 0.956 GB, free: 20.9 MB / 0.7325 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.001279/0.832, allocations: 24.28 kB / 0.956 GB, free: 20.89 MB / 0.7325 GB Notification: Performance of NFTyping.typeComponents: time 0.0009224/0.8329, allocations: 289.2 kB / 0.9563 GB, free: 20.8 MB / 0.7325 GB Notification: Performance of NFTyping.typeBindings: time 0.003288/0.8362, allocations: 1.018 MB / 0.9573 GB, free: 20.55 MB / 0.7325 GB Notification: Performance of NFTyping.typeClassSections: time 0.001998/0.8383, allocations: 0.6011 MB / 0.9578 GB, free: 20.49 MB / 0.7325 GB Notification: Performance of NFFlatten.flatten: time 0.004934/0.8432, allocations: 4.565 MB / 0.9623 GB, free: 19.89 MB / 0.7325 GB Notification: Performance of NFFlatten.resolveConnections: time 0.001612/0.8448, allocations: 1.081 MB / 0.9634 GB, free: 19.68 MB / 0.7325 GB Notification: Performance of NFEvalConstants.evaluate: time 0.002531/0.8474, allocations: 1.213 MB / 0.9645 GB, free: 19.41 MB / 0.7325 GB Notification: Performance of NFSimplifyModel.simplify: time 0.001632/0.849, allocations: 1.122 MB / 0.9656 GB, free: 19.21 MB / 0.7325 GB Notification: Performance of NFPackage.collectConstants: time 0.0001399/0.8492, allocations: 51.75 kB / 0.9657 GB, free: 19.21 MB / 0.7325 GB Notification: Performance of NFFlatten.collectFunctions: time 0.00242/0.8516, allocations: 0.8938 MB / 0.9666 GB, free: 19.12 MB / 0.7325 GB Notification: Performance of NFScalarize.scalarize: time 0.0005491/0.8522, allocations: 479.3 kB / 0.967 GB, free: 19.07 MB / 0.7325 GB Notification: Performance of NFVerifyModel.verify: time 0.0005402/0.8527, allocations: 323.6 kB / 0.9673 GB, free: 19 MB / 0.7325 GB Notification: Performance of NFConvertDAE.convert: time 0.002162/0.8549, allocations: 2.03 MB / 0.9693 GB, free: 18.86 MB / 0.7325 GB Notification: Performance of FrontEnd - DAE generated: time 7.294e-06/0.8549, allocations: 0 / 0.9693 GB, free: 18.86 MB / 0.7325 GB Notification: Performance of FrontEnd: time 1.904e-06/0.8549, allocations: 2.922 kB / 0.9693 GB, free: 18.86 MB / 0.7325 GB Notification: Performance of Transformations before backend: time 2.841e-05/0.855, allocations: 4 kB / 0.9693 GB, free: 18.85 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: 247 * Number of variables: 247 Notification: Performance of Generate backend data structure: time 0.002722/0.8577, allocations: 1.616 MB / 0.9709 GB, free: 17.97 MB / 0.7325 GB Notification: Performance of prepare preOptimizeDAE: time 3.604e-05/0.8577, allocations: 8.594 kB / 0.9709 GB, free: 17.97 MB / 0.7325 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.002775/0.8605, allocations: 495.9 kB / 0.9714 GB, free: 17.89 MB / 0.7325 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.00168/0.8622, allocations: 1.155 MB / 0.9725 GB, free: 17.51 MB / 0.7325 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 5.118e-05/0.8623, allocations: 80 kB / 0.9726 GB, free: 17.51 MB / 0.7325 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001456/0.8624, allocations: 105.8 kB / 0.9727 GB, free: 17.51 MB / 0.7325 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.001888/0.8643, allocations: 1.329 MB / 0.974 GB, free: 17.14 MB / 0.7325 GB Notification: Performance of preOpt findStateOrder (simulation): time 2.453e-05/0.8643, allocations: 0 / 0.974 GB, free: 17.14 MB / 0.7325 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0001024/0.8645, allocations: 41.78 kB / 0.974 GB, free: 17.14 MB / 0.7325 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 4.823e-05/0.8645, allocations: 40.72 kB / 0.9741 GB, free: 17.14 MB / 0.7325 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.001702/0.8662, allocations: 1.271 MB / 0.9753 GB, free: 16.87 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 0.005139/0.8714, allocations: 4.925 MB / 0.9801 GB, free: 13.8 MB / 0.7325 GB Notification: Performance of preOpt comSubExp (simulation): time 0.001119/0.8725, allocations: 0.9899 MB / 0.9811 GB, free: 13.6 MB / 0.7325 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0005788/0.8731, allocations: 0.5765 MB / 0.9816 GB, free: 13.49 MB / 0.7325 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0002926/0.8734, allocations: 205.9 kB / 0.9818 GB, free: 13.29 MB / 0.7325 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 3.012e-05/0.8734, allocations: 43.78 kB / 0.9819 GB, free: 13.25 MB / 0.7325 GB Notification: Performance of pre-optimization done (n=78): time 3.747e-06/0.8734, allocations: 3.984 kB / 0.9819 GB, free: 13.25 MB / 0.7325 GB Notification: Performance of matching and sorting (n=81): time 0.004638/0.8781, allocations: 2.979 MB / 0.9848 GB, free: 12.32 MB / 0.7325 GB Notification: Performance of inlineWhenForInitialization (initialization): time 3.419e-05/0.8781, allocations: 61.41 kB / 0.9848 GB, free: 12.25 MB / 0.7325 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.001006/0.8791, allocations: 0.9573 MB / 0.9858 GB, free: 11.93 MB / 0.7325 GB Notification: Performance of collectPreVariables (initialization): time 6.69e-05/0.8792, allocations: 44.92 kB / 0.9858 GB, free: 11.9 MB / 0.7325 GB Notification: Performance of collectInitialEqns (initialization): time 0.0003343/0.8796, allocations: 0.5313 MB / 0.9863 GB, free: 11.63 MB / 0.7325 GB Notification: Performance of collectInitialBindings (initialization): time 0.0002362/0.8798, allocations: 292.6 kB / 0.9866 GB, free: 11.43 MB / 0.7325 GB Notification: Performance of simplifyInitialFunctions (initialization): time 4.221e-05/0.8799, allocations: 14.81 kB / 0.9866 GB, free: 11.43 MB / 0.7325 GB Notification: Performance of setup shared object (initialization): time 0.0001159/0.88, allocations: 342.9 kB / 0.987 GB, free: 11.11 MB / 0.7325 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0005271/0.8805, allocations: 438.5 kB / 0.9874 GB, free: 11.02 MB / 0.7325 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0006264/0.8811, allocations: 0.6054 MB / 0.988 GB, free: 10.75 MB / 0.7325 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0006488/0.8818, allocations: 0.5419 MB / 0.9885 GB, free: 10.65 MB / 0.7325 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 2.064e-06/0.8818, allocations: 0 / 0.9885 GB, free: 10.65 MB / 0.7325 GB Notification: Performance of matching and sorting (n=97) (initialization): time 0.0016/0.8834, allocations: 1.238 MB / 0.9897 GB, free: 10.33 MB / 0.7325 GB Notification: Performance of prepare postOptimizeDAE: time 9.935e-05/0.8835, allocations: 173.1 kB / 0.9899 GB, free: 10.14 MB / 0.7325 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 9.698e-06/0.8835, allocations: 3.219 kB / 0.9899 GB, free: 10.14 MB / 0.7325 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0002073/0.8838, allocations: 69.19 kB / 0.9899 GB, free: 10.12 MB / 0.7325 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0009195/0.8847, allocations: 205.3 kB / 0.9901 GB, free: 10.08 MB / 0.7325 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.002092/0.8868, allocations: 3 MB / 0.9931 GB, free: 7.422 MB / 0.7325 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001296/0.8881, allocations: 144.7 kB / 0.9932 GB, free: 7.359 MB / 0.7325 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 6.242e-05/0.8882, allocations: 30.34 kB / 0.9932 GB, free: 7.359 MB / 0.7325 GB Notification: Performance of prepare postOptimizeDAE: time 6.782e-06/0.8882, allocations: 4.656 kB / 0.9932 GB, free: 7.359 MB / 0.7325 GB Notification: Performance of postOpt replaceHomotopyWithSimplified (initialization): time 0.001412/0.8896, allocations: 1.121 MB / 0.9943 GB, free: 7.125 MB / 0.7325 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 4.919e-06/0.8896, allocations: 2.688 kB / 0.9943 GB, free: 7.125 MB / 0.7325 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0001553/0.8898, allocations: 71.83 kB / 0.9944 GB, free: 7.102 MB / 0.7325 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0006012/0.8904, allocations: 171.6 kB / 0.9946 GB, free: 7.07 MB / 0.7325 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.001381/0.8918, allocations: 1.811 MB / 0.9963 GB, free: 5.605 MB / 0.7325 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001437/0.8932, allocations: 151.4 kB / 0.9965 GB, free: 5.539 MB / 0.7325 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 6.202e-05/0.8933, allocations: 30.73 kB / 0.9965 GB, free: 5.535 MB / 0.7325 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 12 * 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 (92): * Single equations (assignments): 89 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (linear and non-linear blocks): 2 * Torn equation systems: 1 * Mixed (continuous/discrete) equation systems: 0 Notification: Equation system details: * Constant Jacobian: 0 * Linear Jacobian (size,density): 0 * Non-linear Jacobian: 2 {1,1} * Without analytic Jacobian: 0 Notification: Torn system details for strict tearing set: * Linear torn systems: 1 {(1,100.0%) 5} * Non-linear torn systems: 0 Notification: Performance of prepare postOptimizeDAE: time 0.001019/0.8943, allocations: 0.5883 MB / 0.9971 GB, free: 5.246 MB / 0.7325 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0001897/0.8945, allocations: 110.9 kB / 0.9972 GB, free: 5.188 MB / 0.7325 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.001648/0.8962, allocations: 1.191 MB / 0.9984 GB, free: 4.887 MB / 0.7325 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 6.603e-06/0.8962, allocations: 10.88 kB / 0.9984 GB, free: 4.887 MB / 0.7325 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 3.888e-06/0.8962, allocations: 0 / 0.9984 GB, free: 4.887 MB / 0.7325 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.001304/0.8975, allocations: 1.233 MB / 0.9996 GB, free: 4.352 MB / 0.7325 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.003791/0.9013, allocations: 2.798 MB / 1.002 GB, free: 3.371 MB / 0.7325 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 4.809e-06/0.9013, allocations: 6.875 kB / 1.002 GB, free: 3.367 MB / 0.7325 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0009858/0.9023, allocations: 235.9 kB / 1.003 GB, free: 3.316 MB / 0.7325 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0001691/0.9025, allocations: 64.28 kB / 1.003 GB, free: 3.297 MB / 0.7325 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 6.684e-05/0.9026, allocations: 27.61 kB / 1.003 GB, free: 3.293 MB / 0.7325 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.001999/0.9046, allocations: 2.997 MB / 1.006 GB, free: 0.6367 MB / 0.7325 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 5.881e-06/0.9046, allocations: 6.781 kB / 1.006 GB, free: 0.6328 MB / 0.7325 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.002328/0.907, allocations: 1.936 MB / 1.007 GB, free: 48 kB / 0.7325 GB Notification: Performance of postOpt removeConstants (simulation): time 0.000683/0.9077, allocations: 322.1 kB / 1.008 GB, free: 15.87 MB / 0.7481 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001318/0.9078, allocations: 25.5 kB / 1.008 GB, free: 15.87 MB / 0.7481 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0009082/0.9087, allocations: 109.6 kB / 1.008 GB, free: 15.82 MB / 0.7481 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001077/0.9088, allocations: 64.97 kB / 1.008 GB, free: 15.79 MB / 0.7481 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 6.067e-05/0.9089, allocations: 32.33 kB / 1.008 GB, free: 15.78 MB / 0.7481 GB Notification: Performance of sorting global known variables: time 0.001137/0.91, allocations: 0.6782 MB / 1.009 GB, free: 15.55 MB / 0.7481 GB Notification: Performance of sort global known variables: time 1.3e-07/0.91, allocations: 0 / 1.009 GB, free: 15.55 MB / 0.7481 GB Notification: Performance of remove unused functions: time 0.002381/0.9124, allocations: 0.6544 MB / 1.009 GB, free: 15.54 MB / 0.7481 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 9 * Number of states: 7 (vol[1].dynBal.U,vol[1].dynBal.mXi[1],vol[2].dynBal.U,vol[2].dynBal.mXi[1],vol[3].dynBal.U,vol[3].dynBal.m,vol[3].dynBal.mXi[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 (76): * Single equations (assignments): 73 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (linear and non-linear blocks): 2 * Torn equation systems: 1 * Mixed (continuous/discrete) equation systems: 0 Notification: Equation system details: * Constant Jacobian: 0 * Linear Jacobian (size,density): 0 * Non-linear Jacobian: 2 {1,1} * Without analytic Jacobian: 0 Notification: Torn system details for strict tearing set: * Linear torn systems: 1 {(1,100.0%) 5} * Non-linear torn systems: 0 Notification: Performance of Backend phase and start with SimCode phase: time 0.0006115/0.9131, allocations: 216.1 kB / 1.009 GB, free: 15.41 MB / 0.7481 GB Notification: Performance of simCode: created initialization part: time 0.003021/0.9161, allocations: 1.907 MB / 1.011 GB, free: 14.83 MB / 0.7481 GB Notification: Performance of simCode: created event and clocks part: time 5.25e-06/0.9161, allocations: 0 / 1.011 GB, free: 14.83 MB / 0.7481 GB Notification: Performance of simCode: created simulation system equations: time 0.001052/0.9172, allocations: 0.6695 MB / 1.012 GB, free: 14.59 MB / 0.7481 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.003684/0.9209, allocations: 0.8058 MB / 1.013 GB, free: 14.32 MB / 0.7481 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.004675/0.9256, allocations: 3.581 MB / 1.016 GB, free: 12.29 MB / 0.7481 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0008816/0.9265, allocations: 1.416 MB / 1.018 GB, free: 11.35 MB / 0.7481 GB Notification: Performance of simCode: alias equations: time 0.001922/0.9284, allocations: 0.6813 MB / 1.018 GB, free: 10.79 MB / 0.7481 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0002701/0.9287, allocations: 90.8 kB / 1.018 GB, free: 10.7 MB / 0.7481 GB Notification: Performance of SimCode: time 1.874e-06/0.9287, allocations: 0 / 1.018 GB, free: 10.7 MB / 0.7481 GB Notification: Performance of Templates: time 0.0395/0.9682, allocations: 26.16 MB / 1.044 GB, free: 0.8789 MB / 0.7637 GB make -j1 -f Buildings_8_Buildings.Fluid.MixingVolumes.BaseClasses.Validation.MixingVolumeHeatPortAir.makefile Environment - environmentSimulation: (rm -f Buildings_8_Buildings.Fluid.MixingVolumes.BaseClasses.Validation.MixingVolumeHeatPortAir.pipe ; mkfifo Buildings_8_Buildings.Fluid.MixingVolumes.BaseClasses.Validation.MixingVolumeHeatPortAir.pipe ; head -c 1048576 < Buildings_8_Buildings.Fluid.MixingVolumes.BaseClasses.Validation.MixingVolumeHeatPortAir.pipe >> ../files/Buildings_8_Buildings.Fluid.MixingVolumes.BaseClasses.Validation.MixingVolumeHeatPortAir.sim & ./Buildings_8_Buildings.Fluid.MixingVolumes.BaseClasses.Validation.MixingVolumeHeatPortAir -abortSlowSimulation -alarm=480 -lv LOG_STATS > Buildings_8_Buildings.Fluid.MixingVolumes.BaseClasses.Validation.MixingVolumeHeatPortAir.pipe 2>&1) Environment - environmentSimulation: