Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr Buildings_8_Buildings.Controls.OBC.CDL.Logical.Validation.Latch.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.Controls.OBC.CDL.Logical.Validation.Latch,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_8_Buildings.Controls.OBC.CDL.Logical.Validation.Latch") translateModel(Buildings.Controls.OBC.CDL.Logical.Validation.Latch,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_8_Buildings.Controls.OBC.CDL.Logical.Validation.Latch") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.0009562/0.0009563, 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 0.009396/0.009397, allocations: 169.2 kB / 16.26 MB, free: 6.648 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 1.74/1.74, allocations: 205.4 MB / 222.4 MB, free: 5.57 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 1.867/1.867, allocations: 292.7 MB / 0.5502 GB, free: 14.5 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 0.0005614/0.0005613, allocations: 15.12 kB / 0.6743 GB, free: 25.85 MB / 0.5294 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.2636/0.2642, allocations: 116.3 MB / 0.7879 GB, free: 11.59 MB / 0.6075 GB Notification: Performance of NFInst.instantiate(Buildings.Controls.OBC.CDL.Logical.Validation.Latch): time 0.001104/0.2654, allocations: 0.495 MB / 0.7884 GB, free: 11.09 MB / 0.6075 GB Notification: Performance of NFInst.instExpressions: time 0.00195/0.2673, allocations: 1.347 MB / 0.7897 GB, free: 9.727 MB / 0.6075 GB Notification: Performance of NFInst.updateImplicitVariability: time 5.423e-05/0.2674, allocations: 4 kB / 0.7897 GB, free: 9.723 MB / 0.6075 GB Notification: Performance of NFTyping.typeComponents: time 2.753e-05/0.2674, allocations: 11.88 kB / 0.7897 GB, free: 9.711 MB / 0.6075 GB Notification: Performance of NFTyping.typeBindings: time 7.617e-05/0.2675, allocations: 7.922 kB / 0.7897 GB, free: 9.703 MB / 0.6075 GB Notification: Performance of NFTyping.typeClassSections: time 0.000728/0.2683, allocations: 286.2 kB / 0.79 GB, free: 9.43 MB / 0.6075 GB Notification: Performance of NFFlatten.flatten: time 0.0003073/0.2686, allocations: 327.5 kB / 0.7903 GB, free: 9.109 MB / 0.6075 GB Notification: Performance of NFFlatten.resolveConnections: time 0.0001676/0.2688, allocations: 44.89 kB / 0.7903 GB, free: 9.062 MB / 0.6075 GB Notification: Performance of NFEvalConstants.evaluate: time 0.0001519/0.2689, allocations: 127.8 kB / 0.7905 GB, free: 8.938 MB / 0.6075 GB Notification: Performance of NFSimplifyModel.simplify: time 0.0001546/0.2691, allocations: 119.6 kB / 0.7906 GB, free: 8.82 MB / 0.6075 GB Notification: Performance of NFPackage.collectConstants: time 4.318e-05/0.2691, allocations: 16 kB / 0.7906 GB, free: 8.805 MB / 0.6075 GB Notification: Performance of NFFlatten.collectFunctions: time 9.911e-05/0.2692, allocations: 27.98 kB / 0.7906 GB, free: 8.777 MB / 0.6075 GB Notification: Performance of NFScalarize.scalarize: time 7.28e-05/0.2693, allocations: 59.86 kB / 0.7907 GB, free: 8.719 MB / 0.6075 GB Notification: Performance of NFVerifyModel.verify: time 0.0001498/0.2695, allocations: 137.3 kB / 0.7908 GB, free: 8.578 MB / 0.6075 GB Notification: Performance of NFConvertDAE.convert: time 0.0003442/0.2698, allocations: 323.2 kB / 0.7911 GB, free: 8.262 MB / 0.6075 GB Notification: Performance of FrontEnd - DAE generated: time 4.278e-06/0.2698, allocations: 0 / 0.7911 GB, free: 8.262 MB / 0.6075 GB Notification: Performance of FrontEnd: time 2.043e-06/0.2698, allocations: 0 / 0.7911 GB, free: 8.262 MB / 0.6075 GB Notification: Performance of Transformations before backend: time 5.911e-06/0.2699, allocations: 0 / 0.7911 GB, free: 8.262 MB / 0.6075 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 26 * Number of variables: 26 Notification: Performance of Generate backend data structure: time 0.0006884/0.2705, allocations: 482.5 kB / 0.7916 GB, free: 7.727 MB / 0.6075 GB Notification: Performance of prepare preOptimizeDAE: time 5.2e-05/0.2706, allocations: 12.03 kB / 0.7916 GB, free: 7.715 MB / 0.6075 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 8.564e-05/0.2707, allocations: 20.84 kB / 0.7916 GB, free: 7.695 MB / 0.6075 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.000621/0.2713, allocations: 264.3 kB / 0.7919 GB, free: 7.398 MB / 0.6075 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 4.314e-05/0.2714, allocations: 20.36 kB / 0.7919 GB, free: 7.379 MB / 0.6075 GB Notification: Performance of preOpt expandDerOperator (simulation): time 7.232e-05/0.2715, allocations: 40.3 kB / 0.7919 GB, free: 7.34 MB / 0.6075 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.0003615/0.2718, allocations: 216.8 kB / 0.7921 GB, free: 7.125 MB / 0.6075 GB Notification: Performance of preOpt findStateOrder (simulation): time 1.386e-05/0.2718, allocations: 3.938 kB / 0.7921 GB, free: 7.121 MB / 0.6075 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 3.454e-05/0.2719, allocations: 11.98 kB / 0.7921 GB, free: 7.109 MB / 0.6075 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 8.886e-06/0.2719, allocations: 4 kB / 0.7921 GB, free: 7.105 MB / 0.6075 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0001967/0.2721, allocations: 95.94 kB / 0.7922 GB, free: 7.012 MB / 0.6075 GB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.0009399/0.2731, allocations: 0.5703 MB / 0.7928 GB, free: 6.391 MB / 0.6075 GB Notification: Performance of preOpt comSubExp (simulation): time 0.0005081/0.2736, allocations: 250.6 kB / 0.793 GB, free: 6.137 MB / 0.6075 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0002064/0.2738, allocations: 124.8 kB / 0.7931 GB, free: 6.012 MB / 0.6075 GB Notification: Performance of preOpt evalFunc (simulation): time 2.319e-05/0.2738, allocations: 12.02 kB / 0.7932 GB, free: 6 MB / 0.6075 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.0007943/0.2746, allocations: 494.4 kB / 0.7936 GB, free: 5.504 MB / 0.6075 GB Notification: Performance of pre-optimization done (n=44): time 1.593e-06/0.2746, allocations: 0 / 0.7936 GB, free: 5.504 MB / 0.6075 GB Notification: Performance of matching and sorting (n=44): time 0.001134/0.2758, allocations: 0.5636 MB / 0.7942 GB, free: 4.934 MB / 0.6075 GB Notification: Performance of inlineWhenForInitialization (initialization): time 0.0001013/0.2759, allocations: 71.3 kB / 0.7942 GB, free: 4.852 MB / 0.6075 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0002116/0.2761, allocations: 156.5 kB / 0.7944 GB, free: 4.691 MB / 0.6075 GB Notification: Performance of collectPreVariables (initialization): time 9.848e-05/0.2762, allocations: 57.69 kB / 0.7945 GB, free: 4.629 MB / 0.6075 GB Notification: Performance of collectInitialEqns (initialization): time 0.0001428/0.2764, allocations: 112.9 kB / 0.7946 GB, free: 4.512 MB / 0.6075 GB Notification: Performance of collectInitialBindings (initialization): time 0.0001104/0.2765, allocations: 98.84 kB / 0.7947 GB, free: 4.414 MB / 0.6075 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0001207/0.2766, allocations: 69.67 kB / 0.7947 GB, free: 4.34 MB / 0.6075 GB Notification: Performance of setup shared object (initialization): time 0.0001969/0.2768, allocations: 338.8 kB / 0.795 GB, free: 4 MB / 0.6075 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0003198/0.2771, allocations: 173.1 kB / 0.7952 GB, free: 3.832 MB / 0.6075 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0004197/0.2776, allocations: 289.7 kB / 0.7955 GB, free: 3.508 MB / 0.6075 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0004937/0.2781, allocations: 369.1 kB / 0.7958 GB, free: 3.094 MB / 0.6075 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 3.327e-06/0.2781, allocations: 0 / 0.7958 GB, free: 3.094 MB / 0.6075 GB Notification: Performance of matching and sorting (n=74) (initialization): time 0.0008527/0.2789, allocations: 0.5526 MB / 0.7964 GB, free: 2.52 MB / 0.6075 GB Notification: Performance of prepare postOptimizeDAE: time 6.299e-05/0.279, allocations: 67.77 kB / 0.7964 GB, free: 2.441 MB / 0.6075 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 9.397e-06/0.279, allocations: 4 kB / 0.7964 GB, free: 2.438 MB / 0.6075 GB Notification: Performance of postOpt tearingSystem (initialization): time 1.875e-05/0.2791, allocations: 8 kB / 0.7965 GB, free: 2.43 MB / 0.6075 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 7.732e-05/0.2791, allocations: 31.8 kB / 0.7965 GB, free: 2.398 MB / 0.6075 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 1.538e-05/0.2792, allocations: 11.92 kB / 0.7965 GB, free: 2.387 MB / 0.6075 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0004379/0.2796, allocations: 99.62 kB / 0.7966 GB, free: 2.289 MB / 0.6075 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 5.072e-05/0.2797, allocations: 31.98 kB / 0.7966 GB, free: 2.258 MB / 0.6075 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 13 * Number of states: 0 () * Number of discrete variables: 70 ($PRE.falCleTruIni.y,$PRE.truCleTruIni.y,$PRE.falCleFalIni.y,$PRE.truCleFalIni.y,$PRE.swiCleInp.y,$PRE.swiCleInp1.y,$whenCondition27,$whenCondition28,$whenCondition25,$whenCondition26,tru.y,fal.y,truCleTruIni.clr,$PRE.truCleTruIni.clr,truCleFalIni.clr,$PRE.truCleFalIni.clr,falCleTruIni.clr,$PRE.falCleTruIni.clr,falCleFalIni.clr,$PRE.falCleFalIni.clr,latInp.y,$PRE.latInp.y,cleInp.y,$PRE.cleInp.y,swiCleInp1.y,swiCleInp1.clr,$PRE.swiCleInp1.clr,swiCleInp1.u,$PRE.swiCleInp1.u,swiCleInp.y,swiCleInp.clr,$PRE.swiCleInp.clr,swiCleInp.u,$PRE.swiCleInp.u,truCleFalIni.y,truCleFalIni.u,$PRE.truCleFalIni.u,falCleFalIni.y,falCleFalIni.u,$PRE.falCleFalIni.u,truCleTruIni.y,truCleTruIni.u,$PRE.truCleTruIni.u,falCleTruIni.y,falCleTruIni.u,$PRE.falCleTruIni.u,$whenCondition4,$whenCondition3,$whenCondition2,$whenCondition1,$whenCondition8,$whenCondition7,$whenCondition6,$whenCondition5,$whenCondition12,$whenCondition11,$whenCondition10,$whenCondition9,$whenCondition16,$whenCondition15,$whenCondition14,$whenCondition13,$whenCondition20,$whenCondition19,$whenCondition18,$whenCondition17,$whenCondition24,$whenCondition23,$whenCondition22,$whenCondition21) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (70): * Single equations (assignments): 68 * Array equations: 0 * Algorithm blocks: 2 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 0 * Mixed (continuous/discrete) equation systems: 0 Notification: Performance of prepare postOptimizeDAE: time 0.000206/0.2799, allocations: 174.9 kB / 0.7968 GB, free: 2.074 MB / 0.6075 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 5.027e-05/0.2799, allocations: 27.72 kB / 0.7968 GB, free: 2.047 MB / 0.6075 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 9.48e-05/0.28, allocations: 38.31 kB / 0.7969 GB, free: 2.012 MB / 0.6075 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 9.939e-06/0.2801, allocations: 7.938 kB / 0.7969 GB, free: 2.004 MB / 0.6075 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 1.055e-05/0.2801, allocations: 3.984 kB / 0.7969 GB, free: 2 MB / 0.6075 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 5.05e-06/0.2801, allocations: 0 / 0.7969 GB, free: 2 MB / 0.6075 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.001086/0.2812, allocations: 0.8354 MB / 0.7977 GB, free: 1.109 MB / 0.6075 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 3.496e-06/0.2812, allocations: 0 / 0.7977 GB, free: 1.109 MB / 0.6075 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 4.774e-05/0.2812, allocations: 15.92 kB / 0.7977 GB, free: 1.094 MB / 0.6075 GB Notification: Performance of postOpt tearingSystem (simulation): time 4.849e-06/0.2813, allocations: 3.938 kB / 0.7977 GB, free: 1.09 MB / 0.6075 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 3.995e-05/0.2813, allocations: 23.97 kB / 0.7977 GB, free: 1.066 MB / 0.6075 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 4.218e-06/0.2813, allocations: 0 / 0.7977 GB, free: 1.066 MB / 0.6075 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 3.286e-06/0.2813, allocations: 7.922 kB / 0.7977 GB, free: 1.059 MB / 0.6075 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.0008385/0.2822, allocations: 0.5458 MB / 0.7983 GB, free: 0.4961 MB / 0.6075 GB Notification: Performance of postOpt removeConstants (simulation): time 6.632e-05/0.2822, allocations: 96.8 kB / 0.7984 GB, free: 392 kB / 0.6075 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 7.334e-05/0.2823, allocations: 19.98 kB / 0.7984 GB, free: 372 kB / 0.6075 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 9.696e-05/0.2824, allocations: 11.98 kB / 0.7984 GB, free: 360 kB / 0.6075 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001518/0.2826, allocations: 55.92 kB / 0.7984 GB, free: 304 kB / 0.6075 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 4.448e-05/0.2826, allocations: 31.97 kB / 0.7985 GB, free: 272 kB / 0.6075 GB Notification: Performance of sorting global known variables: time 9.024e-05/0.2827, allocations: 103.2 kB / 0.7986 GB, free: 168 kB / 0.6075 GB Notification: Performance of sort global known variables: time 1.1e-07/0.2827, allocations: 0 / 0.7986 GB, free: 168 kB / 0.6075 GB Notification: Performance of remove unused functions: time 0.0004404/0.2832, allocations: 91.98 kB / 0.7987 GB, free: 76 kB / 0.6075 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 1 * Number of states: 0 () * Number of discrete variables: 44 ($whenCondition27,$whenCondition28,$whenCondition25,$whenCondition26,$whenCondition21,$whenCondition22,$whenCondition23,$whenCondition24,$whenCondition17,$whenCondition18,$whenCondition19,$whenCondition20,$whenCondition13,$whenCondition14,$whenCondition15,$whenCondition16,$whenCondition9,$whenCondition10,$whenCondition11,$whenCondition12,$whenCondition5,$whenCondition6,$whenCondition7,$whenCondition8,$whenCondition1,$whenCondition2,$whenCondition3,$whenCondition4,falCleTruIni.u,falCleTruIni.y,truCleTruIni.u,truCleTruIni.y,falCleFalIni.u,falCleFalIni.y,truCleFalIni.u,truCleFalIni.y,swiCleInp.u,swiCleInp.clr,swiCleInp.y,swiCleInp1.u,swiCleInp1.clr,swiCleInp1.y,cleInp.y,latInp.y) * Number of discrete states: 14 (falCleFalIni.u,falCleTruIni.u,truCleTruIni.u,truCleFalIni.u,swiCleInp1.u,swiCleInp1.clr,swiCleInp.u,swiCleInp.clr,swiCleInp1.y,swiCleInp.y,truCleFalIni.y,falCleFalIni.y,truCleTruIni.y,falCleTruIni.y) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (44): * Single equations (assignments): 36 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 8 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 0 * Mixed (continuous/discrete) equation systems: 0 Notification: Performance of Backend phase and start with SimCode phase: time 0.0002826/0.2835, allocations: 151.2 kB / 0.7988 GB, free: 15.91 MB / 0.6231 GB Notification: Performance of simCode: created initialization part: time 0.0007937/0.2843, allocations: 0.5453 MB / 0.7993 GB, free: 15.35 MB / 0.6231 GB Notification: Performance of simCode: created event and clocks part: time 2.675e-06/0.2843, allocations: 0.75 kB / 0.7993 GB, free: 15.35 MB / 0.6231 GB Notification: Performance of simCode: created simulation system equations: time 0.0003251/0.2846, allocations: 267.7 kB / 0.7996 GB, free: 15.09 MB / 0.6231 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.0003863/0.285, allocations: 39.09 kB / 0.7996 GB, free: 15.05 MB / 0.6231 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.0008631/0.2859, allocations: 488.4 kB / 0.8001 GB, free: 14.55 MB / 0.6231 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0002962/0.2862, allocations: 0.7412 MB / 0.8008 GB, free: 13.79 MB / 0.6231 GB Notification: Performance of simCode: alias equations: time 0.000109/0.2863, allocations: 38.95 kB / 0.8009 GB, free: 13.75 MB / 0.6231 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0001027/0.2864, allocations: 35.42 kB / 0.8009 GB, free: 13.71 MB / 0.6231 GB Notification: Performance of SimCode: time 7.72e-07/0.2864, allocations: 0 / 0.8009 GB, free: 13.71 MB / 0.6231 GB Notification: Performance of Templates: time 0.008476/0.2949, allocations: 4.175 MB / 0.805 GB, free: 9.559 MB / 0.6231 GB make -j1 -f Buildings_8_Buildings.Controls.OBC.CDL.Logical.Validation.Latch.makefile Environment - environmentSimulation: (rm -f Buildings_8_Buildings.Controls.OBC.CDL.Logical.Validation.Latch.pipe ; mkfifo Buildings_8_Buildings.Controls.OBC.CDL.Logical.Validation.Latch.pipe ; head -c 1048576 < Buildings_8_Buildings.Controls.OBC.CDL.Logical.Validation.Latch.pipe >> ../files/Buildings_8_Buildings.Controls.OBC.CDL.Logical.Validation.Latch.sim & ./Buildings_8_Buildings.Controls.OBC.CDL.Logical.Validation.Latch -abortSlowSimulation -alarm=480 -lv LOG_STATS > Buildings_8_Buildings.Controls.OBC.CDL.Logical.Validation.Latch.pipe 2>&1) Environment - environmentSimulation: