Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr Annex60_1.0.0_Annex60.Fluid.Movers.Examples.ClosedLoop_y.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/Annex60 1.0.0/package.mo", uses=false) Using package Annex60 with version 1.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Annex60 1.0.0/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(Annex60.Fluid.Movers.Examples.ClosedLoop_y,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Annex60_1.0.0_Annex60.Fluid.Movers.Examples.ClosedLoop_y") translateModel(Annex60.Fluid.Movers.Examples.ClosedLoop_y,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Annex60_1.0.0_Annex60.Fluid.Movers.Examples.ClosedLoop_y") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001015/0.001015, allocations: 99.78 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 0.0009545/0.0009544, allocations: 177.3 kB / 15.95 MB, free: 216 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: 5.664 MB / 174.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Annex60 1.0.0/package.mo): time 0.4066/0.4066, allocations: 54.97 MB / 325.3 MB, free: 0.6484 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: Annex60 requested package Modelica of version 3.2.2. 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 0.0005346/0.0005347, allocations: 16 kB / 396.6 MB, free: 11.77 MB / 334.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.3244/0.325, allocations: 60.72 MB / 457.3 MB, free: 38.19 MB / 382.1 MB Notification: Performance of NFInst.instantiate(Annex60.Fluid.Movers.Examples.ClosedLoop_y): time 0.1738/0.4988, allocations: 170.3 MB / 0.6129 GB, free: 12.98 MB / 494.1 MB Notification: Performance of NFInst.instExpressions: time 0.02099/0.5198, allocations: 14.52 MB / 0.6271 GB, free: 14.44 MB / 0.4981 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.001624/0.5215, allocations: 47.62 kB / 0.6271 GB, free: 14.39 MB / 0.4981 GB Notification: Performance of NFTyping.typeComponents: time 0.002403/0.5239, allocations: 0.7622 MB / 0.6279 GB, free: 13.62 MB / 0.4981 GB Notification: Performance of NFTyping.typeBindings: time 0.005514/0.5294, allocations: 2.03 MB / 0.6299 GB, free: 11.59 MB / 0.4981 GB Notification: Performance of NFTyping.typeClassSections: time 0.006099/0.5355, allocations: 2.242 MB / 0.632 GB, free: 9.371 MB / 0.4981 GB Notification: Performance of NFFlatten.flatten: time 0.006078/0.5416, allocations: 2.263 MB / 0.6343 GB, free: 7.109 MB / 0.4981 GB Notification: Performance of NFFlatten.resolveConnections: time 0.002195/0.5439, allocations: 1.079 MB / 0.6353 GB, free: 6.012 MB / 0.4981 GB Notification: Performance of NFEvalConstants.evaluate: time 0.003701/0.5476, allocations: 1.456 MB / 0.6367 GB, free: 4.551 MB / 0.4981 GB Notification: Performance of NFSimplifyModel.simplify: time 0.001265/0.5489, allocations: 0.778 MB / 0.6375 GB, free: 3.77 MB / 0.4981 GB Notification: Performance of NFPackage.collectConstants: time 0.0001612/0.549, allocations: 60 kB / 0.6375 GB, free: 3.711 MB / 0.4981 GB Notification: Performance of NFFlatten.collectFunctions: time 0.002804/0.5518, allocations: 1.162 MB / 0.6387 GB, free: 2.547 MB / 0.4981 GB Notification: Performance of NFScalarize.scalarize: time 0.0005237/0.5524, allocations: 486.5 kB / 0.6391 GB, free: 2.07 MB / 0.4981 GB Notification: Performance of NFVerifyModel.verify: time 0.0004279/0.5528, allocations: 364.8 kB / 0.6395 GB, free: 1.707 MB / 0.4981 GB Notification: Performance of NFConvertDAE.convert: time 0.3028/0.8556, allocations: 2.303 MB / 0.6417 GB, free: 8.434 MB / 0.4981 GB Notification: Performance of FrontEnd - DAE generated: time 3.957e-06/0.8557, allocations: 0 / 0.6417 GB, free: 8.434 MB / 0.4981 GB Notification: Performance of FrontEnd: time 2.545e-06/0.8557, allocations: 0 / 0.6417 GB, free: 8.434 MB / 0.4981 GB Notification: Performance of Transformations before backend: time 8.571e-05/0.8558, allocations: 0 / 0.6417 GB, free: 8.434 MB / 0.4981 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 259 * Number of variables: 259 Notification: Performance of Generate backend data structure: time 0.00442/0.8602, allocations: 1.931 MB / 0.6436 GB, free: 7.371 MB / 0.4981 GB Notification: Performance of prepare preOptimizeDAE: time 4.119e-05/0.8602, allocations: 9.938 kB / 0.6436 GB, free: 7.371 MB / 0.4981 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.002767/0.863, allocations: 451 kB / 0.6441 GB, free: 7.27 MB / 0.4981 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.002707/0.8657, allocations: 1.328 MB / 0.6454 GB, free: 6.898 MB / 0.4981 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 8.617e-05/0.8658, allocations: 86.33 kB / 0.6455 GB, free: 6.895 MB / 0.4981 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001789/0.866, allocations: 113.7 kB / 0.6456 GB, free: 6.891 MB / 0.4981 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.002427/0.8685, allocations: 1.273 MB / 0.6468 GB, free: 6.715 MB / 0.4981 GB Notification: Performance of preOpt findStateOrder (simulation): time 2.879e-05/0.8685, allocations: 7.188 kB / 0.6468 GB, free: 6.711 MB / 0.4981 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0001075/0.8686, allocations: 45.59 kB / 0.6469 GB, free: 6.711 MB / 0.4981 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 4.126e-05/0.8687, allocations: 39.19 kB / 0.6469 GB, free: 6.711 MB / 0.4981 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.002074/0.8708, allocations: 0.9699 MB / 0.6478 GB, free: 6.699 MB / 0.4981 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 0.006763/0.8775, allocations: 5.061 MB / 0.6528 GB, free: 20.32 MB / 0.5137 GB Notification: Performance of preOpt comSubExp (simulation): time 0.001949/0.8795, allocations: 0.8257 MB / 0.6536 GB, free: 20.27 MB / 0.5137 GB Notification: Performance of preOpt evalFunc (simulation): time 5.159e-05/0.8796, allocations: 11.44 kB / 0.6536 GB, free: 20.27 MB / 0.5137 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.00119/0.8808, allocations: 0.5641 MB / 0.6541 GB, free: 20.16 MB / 0.5137 GB Notification: Performance of preOpt simplifyInStream (simulation): time 0.0005735/0.8814, allocations: 89.52 kB / 0.6542 GB, free: 20.12 MB / 0.5137 GB Notification: Performance of pre-optimization done (n=66): time 2.324e-06/0.8814, allocations: 2.312 kB / 0.6542 GB, free: 20.12 MB / 0.5137 GB Notification: Performance of matching and sorting (n=66): time 0.003607/0.885, allocations: 1.279 MB / 0.6555 GB, free: 19.88 MB / 0.5137 GB Notification: Performance of inlineWhenForInitialization (initialization): time 0.0001469/0.8851, allocations: 295.8 kB / 0.6558 GB, free: 19.54 MB / 0.5137 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.001632/0.8868, allocations: 1.239 MB / 0.657 GB, free: 19.37 MB / 0.5137 GB Notification: Performance of collectPreVariables (initialization): time 0.0001126/0.8869, allocations: 47.92 kB / 0.657 GB, free: 19.34 MB / 0.5137 GB Notification: Performance of collectInitialEqns (initialization): time 0.000524/0.8874, allocations: 0.7048 MB / 0.6577 GB, free: 19.09 MB / 0.5137 GB Notification: Performance of collectInitialBindings (initialization): time 0.000181/0.8876, allocations: 227.2 kB / 0.6579 GB, free: 18.95 MB / 0.5137 GB Notification: Performance of simplifyInitialFunctions (initialization): time 4.976e-05/0.8877, allocations: 16.64 kB / 0.6579 GB, free: 18.95 MB / 0.5137 GB Notification: Performance of setup shared object (initialization): time 0.0001322/0.8878, allocations: 347.1 kB / 0.6583 GB, free: 18.64 MB / 0.5137 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0007409/0.8886, allocations: 357.4 kB / 0.6586 GB, free: 18.64 MB / 0.5137 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0008738/0.8895, allocations: 0.6403 MB / 0.6592 GB, free: 18.31 MB / 0.5137 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0008944/0.8904, allocations: 463 kB / 0.6597 GB, free: 18.27 MB / 0.5137 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 7.724e-06/0.8904, allocations: 1.781 kB / 0.6597 GB, free: 18.27 MB / 0.5137 GB Notification: Performance of matching and sorting (n=113) (initialization): time 0.003085/0.8935, allocations: 1.24 MB / 0.6609 GB, free: 18.1 MB / 0.5137 GB Notification: Performance of prepare postOptimizeDAE: time 0.0008638/0.8944, allocations: 2.349 MB / 0.6632 GB, free: 15.69 MB / 0.5137 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 2.88e-05/0.8944, allocations: 7.125 kB / 0.6632 GB, free: 15.69 MB / 0.5137 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0004616/0.8949, allocations: 87.84 kB / 0.6633 GB, free: 15.68 MB / 0.5137 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.00153/0.8964, allocations: 277.4 kB / 0.6635 GB, free: 15.67 MB / 0.5137 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.002535/0.899, allocations: 2.037 MB / 0.6655 GB, free: 13.83 MB / 0.5137 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.00143/0.9004, allocations: 101.5 kB / 0.6656 GB, free: 13.82 MB / 0.5137 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001564/0.9006, allocations: 52.45 kB / 0.6657 GB, free: 13.81 MB / 0.5137 GB Notification: Performance of prepare postOptimizeDAE: time 1.009e-05/0.9006, allocations: 3.25 kB / 0.6657 GB, free: 13.81 MB / 0.5137 GB Notification: Performance of postOpt replaceHomotopyWithSimplified (initialization): time 0.002314/0.9029, allocations: 1.073 MB / 0.6667 GB, free: 13.76 MB / 0.5137 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 3.113e-05/0.903, allocations: 9.562 kB / 0.6667 GB, free: 13.76 MB / 0.5137 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0005965/0.9036, allocations: 162.6 kB / 0.6669 GB, free: 13.75 MB / 0.5137 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0007691/0.9043, allocations: 184.4 kB / 0.6671 GB, free: 13.75 MB / 0.5137 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.004578/0.9089, allocations: 2.886 MB / 0.6699 GB, free: 11.95 MB / 0.5137 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001355/0.9103, allocations: 90.34 kB / 0.67 GB, free: 11.94 MB / 0.5137 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001528/0.9105, allocations: 40.14 kB / 0.67 GB, free: 11.94 MB / 0.5137 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 26 * Number of states: 0 () * Number of discrete variables: 6 ($whenCondition1,$PRE.y.T_start,y.T_start,$PRE.y.count,y.count,conPID.I.trigger_internal) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (104): * Single equations (assignments): 98 * Array equations: 2 * Algorithm blocks: 1 * Record equations: 1 * When equations: 0 * If-equations: 0 * Equation systems (linear and non-linear blocks): 1 * 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: 1 {1} * Without analytic Jacobian: 0 Notification: Torn system details for strict tearing set: * Linear torn systems: 0 * Non-linear torn systems: 1 {1 4} Notification: Performance of prepare postOptimizeDAE: time 0.001094/0.9116, allocations: 486.2 kB / 0.6705 GB, free: 11.75 MB / 0.5137 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.000378/0.912, allocations: 143.1 kB / 0.6706 GB, free: 11.67 MB / 0.5137 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.002757/0.9147, allocations: 0.9362 MB / 0.6715 GB, free: 11.58 MB / 0.5137 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.282e-05/0.9148, allocations: 7 kB / 0.6715 GB, free: 11.58 MB / 0.5137 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 6.823e-06/0.9148, allocations: 2.156 kB / 0.6715 GB, free: 11.58 MB / 0.5137 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.002305/0.9171, allocations: 0.8376 MB / 0.6724 GB, free: 11.38 MB / 0.5137 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 0.005589/0.9227, allocations: 2.245 MB / 0.6745 GB, free: 10.88 MB / 0.5137 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 6.994e-06/0.9227, allocations: 0.875 kB / 0.6745 GB, free: 10.88 MB / 0.5137 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.001407/0.9241, allocations: 225.3 kB / 0.6748 GB, free: 10.88 MB / 0.5137 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0003686/0.9245, allocations: 95.22 kB / 0.6749 GB, free: 10.86 MB / 0.5137 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 7.397e-05/0.9246, allocations: 19.7 kB / 0.6749 GB, free: 10.86 MB / 0.5137 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.00217/0.9268, allocations: 2.013 MB / 0.6768 GB, free: 9.012 MB / 0.5137 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 3.527e-06/0.9268, allocations: 0.75 kB / 0.6768 GB, free: 9.012 MB / 0.5137 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.003323/0.9301, allocations: 1.403 MB / 0.6782 GB, free: 8.734 MB / 0.5137 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0008331/0.931, allocations: 286.4 kB / 0.6785 GB, free: 8.57 MB / 0.5137 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.000374/0.9314, allocations: 16.84 kB / 0.6785 GB, free: 8.57 MB / 0.5137 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.001188/0.9326, allocations: 99.41 kB / 0.6786 GB, free: 8.555 MB / 0.5137 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001481/0.9327, allocations: 47.34 kB / 0.6786 GB, free: 8.555 MB / 0.5137 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 8.149e-05/0.9328, allocations: 22.44 kB / 0.6787 GB, free: 8.555 MB / 0.5137 GB Notification: Performance of sorting global known variables: time 0.001641/0.9345, allocations: 0.8452 MB / 0.6795 GB, free: 8.441 MB / 0.5137 GB Notification: Performance of sort global known variables: time 1.3e-07/0.9345, allocations: 0 / 0.6795 GB, free: 8.441 MB / 0.5137 GB Notification: Performance of remove unused functions: time 0.003384/0.9379, allocations: 0.8589 MB / 0.6803 GB, free: 8.32 MB / 0.5137 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 2 * Number of states: 6 (fan.vol.dynBal.U,fan.vol.dynBal.m,fan.vol.dynBal.mXi[1],fan.filter.x[1],fan.filter.x[2],conPID.I.y) * Number of discrete variables: 3 ($whenCondition1,y.T_start,y.count) * Number of discrete states: 1 (y.count) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (63): * Single equations (assignments): 59 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 2 * If-equations: 0 * Equation systems (linear and non-linear blocks): 1 * 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: 1 {1} * Without analytic Jacobian: 0 Notification: Torn system details for strict tearing set: * Linear torn systems: 0 * Non-linear torn systems: 1 {1 5} Notification: Performance of Backend phase and start with SimCode phase: time 0.00141/0.9393, allocations: 428.8 kB / 0.6807 GB, free: 8.184 MB / 0.5137 GB Notification: Performance of simCode: created initialization part: time 0.004759/0.9441, allocations: 1.721 MB / 0.6824 GB, free: 7.855 MB / 0.5137 GB Notification: Performance of simCode: created event and clocks part: time 6.392e-06/0.9441, allocations: 1.281 kB / 0.6824 GB, free: 7.855 MB / 0.5137 GB Notification: Performance of simCode: created simulation system equations: time 0.001939/0.946, allocations: 0.5001 MB / 0.6829 GB, free: 7.84 MB / 0.5137 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.003528/0.9496, allocations: 0.6703 MB / 0.6836 GB, free: 7.789 MB / 0.5137 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.005268/0.9549, allocations: 3.177 MB / 0.6867 GB, free: 6.266 MB / 0.5137 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.001173/0.9561, allocations: 1.328 MB / 0.688 GB, free: 5.539 MB / 0.5137 GB Notification: Performance of simCode: alias equations: time 0.001654/0.9577, allocations: 350.4 kB / 0.6883 GB, free: 5.449 MB / 0.5137 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0003342/0.9581, allocations: 113.4 kB / 0.6884 GB, free: 5.438 MB / 0.5137 GB Notification: Performance of SimCode: time 1.002e-06/0.9581, allocations: 4 kB / 0.6884 GB, free: 5.434 MB / 0.5137 GB Notification: Performance of Templates: time 0.05258/1.011, allocations: 29.7 MB / 0.7174 GB, free: 6.391 MB / 0.5294 GB make -j1 -f Annex60_1.0.0_Annex60.Fluid.Movers.Examples.ClosedLoop_y.makefile Environment - environmentSimulation: (rm -f Annex60_1.0.0_Annex60.Fluid.Movers.Examples.ClosedLoop_y.pipe ; mkfifo Annex60_1.0.0_Annex60.Fluid.Movers.Examples.ClosedLoop_y.pipe ; head -c 1048576 < Annex60_1.0.0_Annex60.Fluid.Movers.Examples.ClosedLoop_y.pipe >> ../files/Annex60_1.0.0_Annex60.Fluid.Movers.Examples.ClosedLoop_y.sim & ./Annex60_1.0.0_Annex60.Fluid.Movers.Examples.ClosedLoop_y -abortSlowSimulation -alarm=480 -lv LOG_STATS > Annex60_1.0.0_Annex60.Fluid.Movers.Examples.ClosedLoop_y.pipe 2>&1) Environment - environmentSimulation: