Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr Buildings_8_Buildings.Controls.OBC.CDL.Logical.Validation.Toggle.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.Toggle,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_8_Buildings.Controls.OBC.CDL.Logical.Validation.Toggle") translateModel(Buildings.Controls.OBC.CDL.Logical.Validation.Toggle,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_8_Buildings.Controls.OBC.CDL.Logical.Validation.Toggle") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001202/0.001202, allocations: 91.84 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 0.01072/0.01073, allocations: 169.6 kB / 16.26 MB, free: 6.676 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 1.764/1.764, 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 1.852/1.852, allocations: 292.7 MB / 0.5502 GB, free: 14.47 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 0.000579/0.000579, allocations: 17.5 kB / 0.6743 GB, free: 25.84 MB / 0.5294 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.3316/0.3322, allocations: 116.3 MB / 0.7879 GB, free: 11.56 MB / 0.6075 GB Notification: Performance of NFInst.instantiate(Buildings.Controls.OBC.CDL.Logical.Validation.Toggle): time 0.001371/0.3337, allocations: 0.495 MB / 0.7884 GB, free: 11.07 MB / 0.6075 GB Notification: Performance of NFInst.instExpressions: time 0.002069/0.3358, allocations: 1.351 MB / 0.7897 GB, free: 9.699 MB / 0.6075 GB Notification: Performance of NFInst.updateImplicitVariability: time 5.795e-05/0.3358, allocations: 4 kB / 0.7897 GB, free: 9.695 MB / 0.6075 GB Notification: Performance of NFTyping.typeComponents: time 2.761e-05/0.3359, allocations: 7.922 kB / 0.7897 GB, free: 9.688 MB / 0.6075 GB Notification: Performance of NFTyping.typeBindings: time 9.909e-05/0.336, allocations: 11.92 kB / 0.7897 GB, free: 9.676 MB / 0.6075 GB Notification: Performance of NFTyping.typeClassSections: time 0.0007889/0.3368, allocations: 283.1 kB / 0.79 GB, free: 9.402 MB / 0.6075 GB Notification: Performance of NFFlatten.flatten: time 0.0003404/0.3371, allocations: 335.5 kB / 0.7903 GB, free: 9.074 MB / 0.6075 GB Notification: Performance of NFFlatten.resolveConnections: time 0.0002046/0.3373, allocations: 48.88 kB / 0.7904 GB, free: 9.023 MB / 0.6075 GB Notification: Performance of NFEvalConstants.evaluate: time 0.000168/0.3375, allocations: 135.7 kB / 0.7905 GB, free: 8.891 MB / 0.6075 GB Notification: Performance of NFSimplifyModel.simplify: time 0.00018/0.3377, allocations: 115.6 kB / 0.7906 GB, free: 8.777 MB / 0.6075 GB Notification: Performance of NFPackage.collectConstants: time 4.663e-05/0.3377, allocations: 16 kB / 0.7906 GB, free: 8.762 MB / 0.6075 GB Notification: Performance of NFFlatten.collectFunctions: time 0.0001047/0.3379, allocations: 31.98 kB / 0.7906 GB, free: 8.73 MB / 0.6075 GB Notification: Performance of NFScalarize.scalarize: time 6.257e-05/0.3379, allocations: 47.86 kB / 0.7907 GB, free: 8.684 MB / 0.6075 GB Notification: Performance of NFVerifyModel.verify: time 0.0001629/0.3381, allocations: 149.2 kB / 0.7908 GB, free: 8.531 MB / 0.6075 GB Notification: Performance of NFConvertDAE.convert: time 0.0003766/0.3385, allocations: 315.3 kB / 0.7911 GB, free: 8.223 MB / 0.6075 GB Notification: Performance of FrontEnd - DAE generated: time 6.683e-06/0.3385, allocations: 4 kB / 0.7911 GB, free: 8.219 MB / 0.6075 GB Notification: Performance of FrontEnd: time 1.964e-06/0.3385, allocations: 0 / 0.7911 GB, free: 8.219 MB / 0.6075 GB Notification: Performance of Transformations before backend: time 7.684e-06/0.3385, allocations: 0 / 0.7911 GB, free: 8.219 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 0.0007964/0.3393, allocations: 490.5 kB / 0.7916 GB, free: 7.68 MB / 0.6075 GB Notification: Performance of prepare preOptimizeDAE: time 5.624e-05/0.3394, allocations: 8.031 kB / 0.7916 GB, free: 7.672 MB / 0.6075 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0001012/0.3395, allocations: 28.83 kB / 0.7916 GB, free: 7.645 MB / 0.6075 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.0006808/0.3402, allocations: 267.1 kB / 0.7919 GB, free: 7.348 MB / 0.6075 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 5.079e-05/0.3402, allocations: 20.36 kB / 0.7919 GB, free: 7.328 MB / 0.6075 GB Notification: Performance of preOpt expandDerOperator (simulation): time 7.153e-05/0.3403, allocations: 36.36 kB / 0.7919 GB, free: 7.293 MB / 0.6075 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.0004254/0.3408, allocations: 229.6 kB / 0.7922 GB, free: 7.066 MB / 0.6075 GB Notification: Performance of preOpt findStateOrder (simulation): time 9.778e-06/0.3408, allocations: 0 / 0.7922 GB, free: 7.066 MB / 0.6075 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 4.014e-05/0.3408, allocations: 15.97 kB / 0.7922 GB, free: 7.051 MB / 0.6075 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 8.816e-06/0.3408, allocations: 4 kB / 0.7922 GB, free: 7.047 MB / 0.6075 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0002296/0.3411, allocations: 95.94 kB / 0.7923 GB, free: 6.953 MB / 0.6075 GB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.0008767/0.342, allocations: 0.5625 MB / 0.7928 GB, free: 6.34 MB / 0.6075 GB Notification: Performance of preOpt comSubExp (simulation): time 0.0004625/0.3424, allocations: 254.6 kB / 0.7931 GB, free: 6.082 MB / 0.6075 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0001828/0.3426, allocations: 112.8 kB / 0.7932 GB, free: 5.969 MB / 0.6075 GB Notification: Performance of preOpt evalFunc (simulation): time 1.433e-05/0.3426, allocations: 4 kB / 0.7932 GB, free: 5.965 MB / 0.6075 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.0008107/0.3435, allocations: 0.5414 MB / 0.7937 GB, free: 5.41 MB / 0.6075 GB Notification: Performance of pre-optimization done (n=44): time 1.523e-06/0.3435, allocations: 4 kB / 0.7937 GB, free: 5.406 MB / 0.6075 GB Notification: Performance of matching and sorting (n=44): time 0.0009503/0.3444, allocations: 0.5557 MB / 0.7943 GB, free: 4.844 MB / 0.6075 GB Notification: Performance of inlineWhenForInitialization (initialization): time 6.711e-05/0.3445, allocations: 75.23 kB / 0.7943 GB, free: 4.758 MB / 0.6075 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0001314/0.3446, allocations: 156.3 kB / 0.7945 GB, free: 4.598 MB / 0.6075 GB Notification: Performance of collectPreVariables (initialization): time 8.047e-05/0.3447, allocations: 57.69 kB / 0.7945 GB, free: 4.535 MB / 0.6075 GB Notification: Performance of collectInitialEqns (initialization): time 0.0001148/0.3449, allocations: 108.9 kB / 0.7946 GB, free: 4.422 MB / 0.6075 GB Notification: Performance of collectInitialBindings (initialization): time 0.0001069/0.345, allocations: 106.8 kB / 0.7947 GB, free: 4.316 MB / 0.6075 GB Notification: Performance of simplifyInitialFunctions (initialization): time 9.433e-05/0.3451, allocations: 65.67 kB / 0.7948 GB, free: 4.246 MB / 0.6075 GB Notification: Performance of setup shared object (initialization): time 0.0001704/0.3453, allocations: 338.8 kB / 0.7951 GB, free: 3.906 MB / 0.6075 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0003309/0.3456, allocations: 185.1 kB / 0.7953 GB, free: 3.727 MB / 0.6075 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0004105/0.346, allocations: 289.8 kB / 0.7956 GB, free: 3.402 MB / 0.6075 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0004796/0.3465, allocations: 369.1 kB / 0.7959 GB, free: 2.988 MB / 0.6075 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 5.43e-06/0.3465, allocations: 4 kB / 0.7959 GB, free: 2.984 MB / 0.6075 GB Notification: Performance of matching and sorting (n=74) (initialization): time 0.0008592/0.3474, allocations: 0.5682 MB / 0.7965 GB, free: 2.395 MB / 0.6075 GB Notification: Performance of prepare postOptimizeDAE: time 6.316e-05/0.3474, allocations: 63.78 kB / 0.7965 GB, free: 2.32 MB / 0.6075 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.035e-05/0.3475, allocations: 8 kB / 0.7966 GB, free: 2.312 MB / 0.6075 GB Notification: Performance of postOpt tearingSystem (initialization): time 2.094e-05/0.3475, allocations: 11.92 kB / 0.7966 GB, free: 2.301 MB / 0.6075 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 7.623e-05/0.3476, allocations: 31.84 kB / 0.7966 GB, free: 2.27 MB / 0.6075 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 1.376e-05/0.3476, allocations: 7.938 kB / 0.7966 GB, free: 2.262 MB / 0.6075 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0003955/0.348, allocations: 99.62 kB / 0.7967 GB, free: 2.164 MB / 0.6075 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 4.981e-05/0.348, allocations: 28 kB / 0.7967 GB, free: 2.137 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 ($PRE.falCleTruIni.clr,$PRE.falCleFalIni.clr,$PRE.truCleTruIni.clr,$PRE.truCleFalIni.clr,$PRE.swiCleInp.clr,$PRE.swiCleInp1.clr,$whenCondition27,$whenCondition28,$whenCondition25,$whenCondition26,fal.y,tru.y,falCleTruIni.clr,falCleFalIni.clr,truCleTruIni.clr,truCleFalIni.clr,togInp.y,$PRE.togInp.y,cleInp.y,$PRE.cleInp.y,swiCleInp1.y,$PRE.swiCleInp1.y,swiCleInp1.clr,swiCleInp1.u,$PRE.swiCleInp1.u,swiCleInp.y,$PRE.swiCleInp.y,swiCleInp.clr,swiCleInp.u,$PRE.swiCleInp.u,truCleFalIni.y,$PRE.truCleFalIni.y,truCleFalIni.u,$PRE.truCleFalIni.u,truCleTruIni.y,$PRE.truCleTruIni.y,truCleTruIni.u,$PRE.truCleTruIni.u,falCleFalIni.y,$PRE.falCleFalIni.y,falCleFalIni.u,$PRE.falCleFalIni.u,falCleTruIni.y,$PRE.falCleTruIni.y,falCleTruIni.u,$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 0.0001841/0.3482, allocations: 174.9 kB / 0.7969 GB, free: 1.953 MB / 0.6075 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 4.432e-05/0.3483, allocations: 35.7 kB / 0.7969 GB, free: 1.918 MB / 0.6075 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.0001082/0.3484, allocations: 34.31 kB / 0.797 GB, free: 1.887 MB / 0.6075 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 7.524e-06/0.3484, allocations: 7.938 kB / 0.797 GB, free: 1.879 MB / 0.6075 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 8.236e-06/0.3484, allocations: 0 / 0.797 GB, free: 1.879 MB / 0.6075 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 6.422e-06/0.3484, allocations: 3.984 kB / 0.797 GB, free: 1.875 MB / 0.6075 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.001117/0.3496, allocations: 0.8781 MB / 0.7978 GB, free: 0.9414 MB / 0.6075 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 3.436e-06/0.3496, allocations: 4 kB / 0.7978 GB, free: 0.9375 MB / 0.6075 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 3.971e-05/0.3496, allocations: 11.94 kB / 0.7978 GB, free: 0.9258 MB / 0.6075 GB Notification: Performance of postOpt tearingSystem (simulation): time 2.545e-06/0.3496, allocations: 0 / 0.7978 GB, free: 0.9258 MB / 0.6075 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 3.991e-05/0.3497, allocations: 27.95 kB / 0.7979 GB, free: 0.8984 MB / 0.6075 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 4.929e-06/0.3497, allocations: 0 / 0.7979 GB, free: 0.8984 MB / 0.6075 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 3.246e-06/0.3497, allocations: 7.875 kB / 0.7979 GB, free: 0.8906 MB / 0.6075 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.0006571/0.3504, allocations: 0.5303 MB / 0.7984 GB, free: 352 kB / 0.6075 GB Notification: Performance of postOpt removeConstants (simulation): time 5.227e-05/0.3504, allocations: 104.8 kB / 0.7985 GB, free: 228 kB / 0.6075 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 7.02e-05/0.3505, allocations: 23.98 kB / 0.7985 GB, free: 204 kB / 0.6075 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 9.392e-05/0.3506, allocations: 11.98 kB / 0.7985 GB, free: 192 kB / 0.6075 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001591/0.3508, allocations: 63.91 kB / 0.7986 GB, free: 128 kB / 0.6075 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 4.506e-05/0.3508, allocations: 39.95 kB / 0.7986 GB, free: 88 kB / 0.6075 GB Notification: Performance of sorting global known variables: time 8.026e-05/0.3509, allocations: 102.4 kB / 0.7987 GB, free: 15.99 MB / 0.6231 GB Notification: Performance of sort global known variables: time 1.3e-07/0.3509, allocations: 0 / 0.7987 GB, free: 15.99 MB / 0.6231 GB Notification: Performance of remove unused functions: time 0.0003735/0.3513, allocations: 95.98 kB / 0.7988 GB, free: 15.89 MB / 0.6231 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 (swiCleInp1.clr,swiCleInp.clr,$whenCondition27,$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,falCleFalIni.u,falCleFalIni.y,truCleTruIni.u,truCleTruIni.y,truCleFalIni.u,truCleFalIni.y,swiCleInp.u,swiCleInp.y,swiCleInp1.u,swiCleInp1.y,cleInp.y,togInp.y) * Number of discrete states: 12 (falCleFalIni.u,falCleFalIni.y,falCleTruIni.u,falCleTruIni.y,truCleTruIni.u,truCleTruIni.y,truCleFalIni.u,truCleFalIni.y,swiCleInp1.u,swiCleInp1.y,swiCleInp.u,swiCleInp.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 0.0002782/0.3516, allocations: 155.2 kB / 0.799 GB, free: 15.73 MB / 0.6231 GB Notification: Performance of simCode: created initialization part: time 0.0008026/0.3524, allocations: 0.5648 MB / 0.7995 GB, free: 15.15 MB / 0.6231 GB Notification: Performance of simCode: created event and clocks part: time 2.234e-06/0.3524, allocations: 0.75 kB / 0.7995 GB, free: 15.15 MB / 0.6231 GB Notification: Performance of simCode: created simulation system equations: time 0.0003216/0.3527, allocations: 251.8 kB / 0.7998 GB, free: 14.9 MB / 0.6231 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.0003812/0.3531, allocations: 51.84 kB / 0.7998 GB, free: 14.85 MB / 0.6231 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.0008404/0.354, allocations: 481.4 kB / 0.8003 GB, free: 14.35 MB / 0.6231 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0003423/0.3543, allocations: 0.7335 MB / 0.801 GB, free: 13.59 MB / 0.6231 GB Notification: Performance of simCode: alias equations: time 0.0001114/0.3544, allocations: 38.95 kB / 0.801 GB, free: 13.56 MB / 0.6231 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0001287/0.3546, allocations: 47.41 kB / 0.8011 GB, free: 13.51 MB / 0.6231 GB Notification: Performance of SimCode: time 2.7e-07/0.3546, allocations: 0 / 0.8011 GB, free: 13.51 MB / 0.6231 GB Notification: Performance of Templates: time 0.008482/0.3631, allocations: 4.63 MB / 0.8056 GB, free: 8.918 MB / 0.6231 GB make -j1 -f Buildings_8_Buildings.Controls.OBC.CDL.Logical.Validation.Toggle.makefile Environment - environmentSimulation: (rm -f Buildings_8_Buildings.Controls.OBC.CDL.Logical.Validation.Toggle.pipe ; mkfifo Buildings_8_Buildings.Controls.OBC.CDL.Logical.Validation.Toggle.pipe ; head -c 1048576 < Buildings_8_Buildings.Controls.OBC.CDL.Logical.Validation.Toggle.pipe >> ../files/Buildings_8_Buildings.Controls.OBC.CDL.Logical.Validation.Toggle.sim & ./Buildings_8_Buildings.Controls.OBC.CDL.Logical.Validation.Toggle -abortSlowSimulation -alarm=480 -lv LOG_STATS > Buildings_8_Buildings.Controls.OBC.CDL.Logical.Validation.Toggle.pipe 2>&1) Environment - environmentSimulation: