Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr ModelicaTest_3.2.1_ModelicaTest.Fluid.TestPipesAndValves.DynamicPipeClosingValve.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/ModelicaTest 3.2.1+maint.om/package.mo", uses=false) Using package ModelicaTest with version 3.2.1 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaTest 3.2.1+maint.om/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(ModelicaTest.Fluid.TestPipesAndValves.DynamicPipeClosingValve,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="ModelicaTest_3.2.1_ModelicaTest.Fluid.TestPipesAndValves.DynamicPipeClosingValve") translateModel(ModelicaTest.Fluid.TestPipesAndValves.DynamicPipeClosingValve,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="ModelicaTest_3.2.1_ModelicaTest.Fluid.TestPipesAndValves.DynamicPipeClosingValve") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.0007614/0.0007613, allocations: 90.52 kB / 15.36 MB, free: 0.7383 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.005375/0.005375, allocations: 171.1 kB / 16.26 MB, free: 6.613 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 1.327/1.327, allocations: 205.4 MB / 222.4 MB, free: 5.559 MB / 174.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaTest 3.2.1+maint.om/package.mo): time 0.284/0.284, allocations: 38.04 MB / 308.8 MB, free: 10.37 MB / 254.1 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: ModelicaTest requested package Modelica of version 3.2.1. Modelica 3.2.3 is used instead which states that it is fully compatible without conversion script needed. Notification: Performance of FrontEnd - loaded program: time 0.0005278/0.000528, allocations: 12 kB / 377 MB, free: 14.83 MB / 318.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.1013/0.1018, allocations: 57.52 MB / 434.6 MB, free: 5.211 MB / 366.1 MB Notification: Performance of NFInst.instantiate(ModelicaTest.Fluid.TestPipesAndValves.DynamicPipeClosingValve): time 0.2227/0.3245, allocations: 47.92 MB / 482.5 MB, free: 27.21 MB / 382.1 MB Notification: Performance of NFInst.instExpressions: time 0.02592/0.3505, allocations: 27.16 MB / 0.4977 GB, free: 9.195 MB / 382.1 MB Notification: Performance of NFInst.updateImplicitVariability: time 0.001727/0.3523, allocations: 45.19 kB / 0.4977 GB, free: 9.172 MB / 382.1 MB Notification: Performance of NFTyping.typeComponents: time 0.001673/0.354, allocations: 451 kB / 0.4982 GB, free: 8.934 MB / 382.1 MB Notification: Performance of NFTyping.typeBindings: time 0.0143/0.3683, allocations: 5.027 MB / 0.5031 GB, free: 6.566 MB / 382.1 MB Notification: Performance of NFTyping.typeClassSections: time 0.008994/0.3773, allocations: 3.364 MB / 0.5064 GB, free: 4.832 MB / 382.1 MB Notification: Performance of NFFlatten.flatten: time 0.004323/0.3817, allocations: 3.801 MB / 0.5101 GB, free: 3.566 MB / 382.1 MB Notification: Performance of NFFlatten.resolveConnections: time 0.0008123/0.3825, allocations: 0.5043 MB / 0.5106 GB, free: 3.387 MB / 382.1 MB Notification: Performance of NFEvalConstants.evaluate: time 0.01074/0.3932, allocations: 5.72 MB / 0.5162 GB, free: 0.8203 MB / 382.1 MB Notification: Performance of NFSimplifyModel.simplify: time 0.01533/0.4086, allocations: 8.818 MB / 0.5248 GB, free: 12.21 MB / 398.1 MB Notification: Performance of NFPackage.collectConstants: time 0.0003149/0.409, allocations: 41.38 kB / 0.5248 GB, free: 12.21 MB / 398.1 MB Notification: Performance of NFFlatten.collectFunctions: time 0.01496/0.4239, allocations: 8.403 MB / 0.533 GB, free: 7.895 MB / 398.1 MB Notification: Performance of NFScalarize.scalarize: time 0.0005306/0.4245, allocations: 298.7 kB / 0.5333 GB, free: 7.703 MB / 398.1 MB Notification: Performance of NFVerifyModel.verify: time 0.001081/0.4256, allocations: 0.5389 MB / 0.5338 GB, free: 7.305 MB / 398.1 MB Notification: Performance of NFConvertDAE.convert: time 0.01166/0.4373, allocations: 6.006 MB / 0.5397 GB, free: 1.285 MB / 398.1 MB Notification: Performance of FrontEnd - DAE generated: time 5.801e-06/0.4373, allocations: 4 kB / 0.5397 GB, free: 1.281 MB / 398.1 MB Notification: Performance of FrontEnd: time 1.854e-06/0.4373, allocations: 0 / 0.5397 GB, free: 1.281 MB / 398.1 MB Notification: Performance of Transformations before backend: time 9.799e-06/0.4373, allocations: 0 / 0.5397 GB, free: 1.281 MB / 398.1 MB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 196 * Number of variables: 196 Notification: Performance of Generate backend data structure: time 0.004595/0.4419, allocations: 1.926 MB / 0.5416 GB, free: 15.3 MB / 414.1 MB Notification: Performance of prepare preOptimizeDAE: time 4.671e-05/0.442, allocations: 12.03 kB / 0.5416 GB, free: 15.29 MB / 414.1 MB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.002334/0.4443, allocations: 378.7 kB / 0.5419 GB, free: 14.92 MB / 414.1 MB Notification: Performance of preOpt evaluateParameters (simulation): time 0.009549/0.4539, allocations: 7.047 MB / 0.5488 GB, free: 7.82 MB / 414.1 MB Notification: Performance of preOpt simplifyIfEquations (simulation): time 7.253e-05/0.454, allocations: 66 kB / 0.5489 GB, free: 7.758 MB / 414.1 MB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001215/0.4541, allocations: 75.98 kB / 0.549 GB, free: 7.684 MB / 414.1 MB Notification: Performance of preOpt clockPartitioning (simulation): time 0.00293/0.4571, allocations: 1.467 MB / 0.5504 GB, free: 6.137 MB / 414.1 MB Notification: Performance of preOpt findStateOrder (simulation): time 2.205e-05/0.4571, allocations: 3.938 kB / 0.5504 GB, free: 6.133 MB / 414.1 MB Notification: Performance of preOpt replaceEdgeChange (simulation): time 8.635e-05/0.4572, allocations: 43.11 kB / 0.5504 GB, free: 6.094 MB / 414.1 MB Notification: Performance of preOpt inlineArrayEqn (simulation): time 7.973e-05/0.4573, allocations: 61.91 kB / 0.5505 GB, free: 6.035 MB / 414.1 MB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.002988/0.4603, allocations: 1.354 MB / 0.5518 GB, free: 4.68 MB / 414.1 MB 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 0.007478/0.4678, allocations: 6.541 MB / 0.5582 GB, free: 13.6 MB / 430.1 MB Notification: Performance of preOpt comSubExp (simulation): time 0.002609/0.4704, allocations: 1.017 MB / 0.5592 GB, free: 12.55 MB / 430.1 MB Notification: Performance of preOpt resolveLoops (simulation): time 0.0008066/0.4712, allocations: 455.6 kB / 0.5596 GB, free: 12.1 MB / 430.1 MB Notification: Performance of preOpt evalFunc (simulation): time 0.06186/0.5331, allocations: 32.47 MB / 0.5913 GB, free: 7.805 MB / 462.1 MB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 6.113e-05/0.5332, allocations: 43 kB / 0.5914 GB, free: 7.754 MB / 462.1 MB Notification: Performance of pre-optimization done (n=56): time 3.957e-06/0.5332, allocations: 0 / 0.5914 GB, free: 7.754 MB / 462.1 MB Notification: Performance of matching and sorting (n=60): time 0.00887/0.5421, allocations: 3.336 MB / 0.5946 GB, free: 4.359 MB / 462.1 MB Notification: Performance of inlineWhenForInitialization (initialization): time 8.543e-05/0.5422, allocations: 162.7 kB / 0.5948 GB, free: 4.164 MB / 462.1 MB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0008736/0.5431, allocations: 0.7075 MB / 0.5955 GB, free: 3.445 MB / 462.1 MB Notification: Performance of collectPreVariables (initialization): time 7.445e-05/0.5432, allocations: 41.64 kB / 0.5955 GB, free: 3.398 MB / 462.1 MB Notification: Performance of collectInitialEqns (initialization): time 0.0002841/0.5435, allocations: 423.5 kB / 0.5959 GB, free: 2.98 MB / 462.1 MB Notification: Performance of collectInitialBindings (initialization): time 0.0001735/0.5436, allocations: 209 kB / 0.5961 GB, free: 2.773 MB / 462.1 MB Notification: Performance of simplifyInitialFunctions (initialization): time 0.000104/0.5437, allocations: 77.67 kB / 0.5962 GB, free: 2.691 MB / 462.1 MB Notification: Performance of setup shared object (initialization): time 0.0001489/0.5439, allocations: 386.8 kB / 0.5966 GB, free: 2.305 MB / 462.1 MB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0008408/0.5448, allocations: 429.7 kB / 0.597 GB, free: 1.883 MB / 462.1 MB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0009514/0.5457, allocations: 0.6303 MB / 0.5976 GB, free: 1.164 MB / 462.1 MB Notification: Performance of analyzeInitialSystem (initialization): time 0.001788/0.5475, allocations: 1.053 MB / 0.5986 GB, free: 24 kB / 462.1 MB Notification: Performance of solveInitialSystemEqSystem (initialization): time 4.929e-06/0.5475, allocations: 0 / 0.5986 GB, free: 24 kB / 462.1 MB Notification: Performance of matching and sorting (n=93) (initialization): time 0.002625/0.5502, allocations: 1.385 MB / 0.6 GB, free: 14.63 MB / 478.1 MB Notification: Performance of prepare postOptimizeDAE: time 0.0001806/0.5504, allocations: 274.8 kB / 0.6002 GB, free: 14.27 MB / 478.1 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.642e-05/0.5504, allocations: 8 kB / 0.6002 GB, free: 14.27 MB / 478.1 MB Notification: Performance of postOpt tearingSystem (initialization): time 0.003243/0.5536, allocations: 0.7032 MB / 0.6009 GB, free: 13.56 MB / 478.1 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0005599/0.5542, allocations: 159.8 kB / 0.6011 GB, free: 13.4 MB / 478.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.001564/0.5558, allocations: 1.305 MB / 0.6024 GB, free: 12.07 MB / 478.1 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0008268/0.5566, allocations: 107.8 kB / 0.6025 GB, free: 11.96 MB / 478.1 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 7.712e-05/0.5567, allocations: 39.98 kB / 0.6025 GB, free: 11.93 MB / 478.1 MB Notification: Performance of prepare postOptimizeDAE: time 9.408e-06/0.5567, allocations: 4 kB / 0.6025 GB, free: 11.92 MB / 478.1 MB Notification: Performance of postOpt replaceHomotopyWithSimplified (initialization): time 0.002553/0.5593, allocations: 1.236 MB / 0.6037 GB, free: 10.68 MB / 478.1 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.209e-05/0.5593, allocations: 8 kB / 0.6037 GB, free: 10.67 MB / 478.1 MB Notification: Performance of postOpt tearingSystem (initialization): time 0.001726/0.561, allocations: 440.4 kB / 0.6041 GB, free: 10.24 MB / 478.1 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.000577/0.5616, allocations: 179.7 kB / 0.6043 GB, free: 10.06 MB / 478.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.001248/0.5629, allocations: 1.107 MB / 0.6054 GB, free: 8.93 MB / 478.1 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0008252/0.5637, allocations: 111.8 kB / 0.6055 GB, free: 8.82 MB / 478.1 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 7.855e-05/0.5638, allocations: 39.98 kB / 0.6055 GB, free: 8.781 MB / 478.1 MB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 28 * Number of states: 0 () * Number of discrete variables: 9 (pipe.state_a.phase,valve.state_b.phase,valve.state_a.phase,sink.medium.phase,pipe.statesFM[2].phase,source.medium.phase,sink.state.phase,pipe.state_b.phase,source.state.phase) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (69): * Single equations (assignments): 68 * Array equations: 0 * Algorithm blocks: 0 * 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 {(2,23)} Notification: Performance of prepare postOptimizeDAE: time 0.0005102/0.5643, allocations: 368.8 kB / 0.6059 GB, free: 8.41 MB / 478.1 MB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0002077/0.5646, allocations: 82.97 kB / 0.606 GB, free: 8.328 MB / 478.1 MB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.004193/0.5687, allocations: 3.3 MB / 0.6092 GB, free: 5.016 MB / 478.1 MB Notification: Performance of postOpt inlineArrayEqn (simulation): time 3.166e-05/0.5688, allocations: 31.95 kB / 0.6092 GB, free: 4.984 MB / 478.1 MB Notification: Performance of postOpt constantLinearSystem (simulation): time 6.923e-06/0.5688, allocations: 0 / 0.6092 GB, free: 4.984 MB / 478.1 MB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.003045/0.5719, allocations: 2.803 MB / 0.612 GB, free: 2.109 MB / 478.1 MB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.005555/0.5774, allocations: 4.561 MB / 0.6164 GB, free: 13.48 MB / 494.1 MB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 9.367e-06/0.5775, allocations: 4.875 kB / 0.6164 GB, free: 13.48 MB / 494.1 MB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0006568/0.5781, allocations: 171.8 kB / 0.6166 GB, free: 13.31 MB / 494.1 MB Notification: Performance of postOpt tearingSystem (simulation): time 0.0004009/0.5785, allocations: 104.6 kB / 0.6167 GB, free: 13.21 MB / 494.1 MB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 5.908e-05/0.5786, allocations: 19.98 kB / 0.6167 GB, free: 13.19 MB / 494.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.0003876/0.579, allocations: 0.6461 MB / 0.6173 GB, free: 12.52 MB / 494.1 MB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 3.576e-06/0.579, allocations: 3.938 kB / 0.6173 GB, free: 12.51 MB / 494.1 MB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.003761/0.5828, allocations: 2.909 MB / 0.6202 GB, free: 9.59 MB / 494.1 MB Notification: Performance of postOpt removeConstants (simulation): time 0.000614/0.5834, allocations: 454.2 kB / 0.6206 GB, free: 9.125 MB / 494.1 MB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001872/0.5836, allocations: 16 kB / 0.6206 GB, free: 9.109 MB / 494.1 MB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0007978/0.5844, allocations: 87.91 kB / 0.6207 GB, free: 9.023 MB / 494.1 MB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001531/0.5846, allocations: 60.5 kB / 0.6208 GB, free: 8.965 MB / 494.1 MB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 6.228e-05/0.5847, allocations: 27.98 kB / 0.6208 GB, free: 8.938 MB / 494.1 MB Notification: Performance of sorting global known variables: time 0.001147/0.5858, allocations: 0.798 MB / 0.6216 GB, free: 8.133 MB / 494.1 MB Notification: Performance of sort global known variables: time 2.11e-07/0.5858, allocations: 0 / 0.6216 GB, free: 8.133 MB / 494.1 MB Notification: Performance of remove unused functions: time 0.004518/0.5903, allocations: 1.566 MB / 0.6231 GB, free: 6.566 MB / 494.1 MB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 3 * Number of states: 2 (pipe.mediums[1].p,pipe.mediums[1].h) * Number of discrete variables: 21 ($cse5.phase,$cse5.region,$cse7.region3boundary,$cse8.region3boundary,$cse9.phase,$cse9.region,$cse11.phase,$cse11.region,$cse12.phase,$cse12.region,$cse14.phase,$cse14.region,$cse15.phase,$cse15.region,$cse18.phase,$cse18.region,$cse21.phase,$cse21.region,source.medium.phase,pipe.statesFM[2].phase,sink.medium.phase) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (75): * Single equations (assignments): 64 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 10 * 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 {(1,1)} Notification: Performance of Backend phase and start with SimCode phase: time 0.005383/0.5957, allocations: 1.527 MB / 0.6246 GB, free: 5.031 MB / 494.1 MB Notification: Performance of simCode: created initialization part: time 0.003471/0.5992, allocations: 1.864 MB / 0.6264 GB, free: 3.168 MB / 494.1 MB Notification: Performance of simCode: created event and clocks part: time 4.268e-06/0.5992, allocations: 192 / 0.6264 GB, free: 3.168 MB / 494.1 MB Notification: Performance of simCode: created simulation system equations: time 0.001277/0.6005, allocations: 0.8992 MB / 0.6273 GB, free: 2.27 MB / 494.1 MB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.002908/0.6035, allocations: 480.6 kB / 0.6278 GB, free: 1.805 MB / 494.1 MB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.1807/0.7841, allocations: 3.772 MB / 0.6314 GB, free: 151.2 MB / 494.1 MB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0005659/0.7847, allocations: 1.318 MB / 0.6327 GB, free: 150.5 MB / 494.1 MB Notification: Performance of simCode: alias equations: time 0.001392/0.7862, allocations: 0.8948 MB / 0.6336 GB, free: 150.4 MB / 494.1 MB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0001964/0.7864, allocations: 81.92 kB / 0.6337 GB, free: 150.4 MB / 494.1 MB Notification: Performance of SimCode: time 7.32e-07/0.7864, allocations: 0 / 0.6337 GB, free: 150.4 MB / 494.1 MB Notification: Performance of Templates: time 0.06607/0.8524, allocations: 56.89 MB / 0.6892 GB, free: 128.4 MB / 494.1 MB make -j1 -f ModelicaTest_3.2.1_ModelicaTest.Fluid.TestPipesAndValves.DynamicPipeClosingValve.makefile Environment - environmentSimulation: (rm -f ModelicaTest_3.2.1_ModelicaTest.Fluid.TestPipesAndValves.DynamicPipeClosingValve.pipe ; mkfifo ModelicaTest_3.2.1_ModelicaTest.Fluid.TestPipesAndValves.DynamicPipeClosingValve.pipe ; head -c 1048576 < ModelicaTest_3.2.1_ModelicaTest.Fluid.TestPipesAndValves.DynamicPipeClosingValve.pipe >> ../files/ModelicaTest_3.2.1_ModelicaTest.Fluid.TestPipesAndValves.DynamicPipeClosingValve.sim & ./ModelicaTest_3.2.1_ModelicaTest.Fluid.TestPipesAndValves.DynamicPipeClosingValve -abortSlowSimulation -alarm=480 -lv LOG_STATS > ModelicaTest_3.2.1_ModelicaTest.Fluid.TestPipesAndValves.DynamicPipeClosingValve.pipe 2>&1) Environment - environmentSimulation: