Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr Buildings_maint.7.0.x_Buildings.Experimental.DistrictHeatingCooling.Plants.Validation.Plant_T_ClosedLoop.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 7.0.3-maint.7.0.x/package.mo", uses=false) Using package Buildings with version 7.0.3 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 7.0.3-maint.7.0.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.Experimental.DistrictHeatingCooling.Plants.Validation.Plant_T_ClosedLoop,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_maint.7.0.x_Buildings.Experimental.DistrictHeatingCooling.Plants.Validation.Plant_T_ClosedLoop") translateModel(Buildings.Experimental.DistrictHeatingCooling.Plants.Validation.Plant_T_ClosedLoop,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_maint.7.0.x_Buildings.Experimental.DistrictHeatingCooling.Plants.Validation.Plant_T_ClosedLoop") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.0006867/0.0006867, allocations: 98.03 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 0.003948/0.003948, allocations: 168.5 kB / 16.26 MB, free: 6.652 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 1.145/1.145, allocations: 205.4 MB / 222.5 MB, free: 5.551 MB / 174.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 7.0.3-maint.7.0.x/package.mo): time 1.303/1.303, allocations: 252 MB / 0.5105 GB, free: 4.629 MB / 414.1 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 0.000429/0.0004289, allocations: 20 kB / 0.6249 GB, free: 0.6992 MB / 0.5137 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.3637/0.3641, allocations: 106.3 MB / 0.7287 GB, free: 11.25 MB / 0.545 GB Notification: Performance of NFInst.instantiate(Buildings.Experimental.DistrictHeatingCooling.Plants.Validation.Plant_T_ClosedLoop): time 0.04636/0.4105, allocations: 61.25 MB / 0.7885 GB, free: 13.79 MB / 0.6075 GB Notification: Performance of NFInst.instExpressions: time 0.02289/0.4334, allocations: 19.41 MB / 0.8075 GB, free: 10.34 MB / 0.6231 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.002388/0.4359, allocations: 79.44 kB / 0.8076 GB, free: 10.26 MB / 0.6231 GB Notification: Performance of NFTyping.typeComponents: time 0.00289/0.4388, allocations: 1.053 MB / 0.8086 GB, free: 9.203 MB / 0.6231 GB Notification: Performance of NFTyping.typeBindings: time 0.005942/0.4447, allocations: 2.515 MB / 0.8111 GB, free: 6.68 MB / 0.6231 GB Notification: Performance of NFTyping.typeClassSections: time 0.006856/0.4516, allocations: 3.143 MB / 0.8141 GB, free: 3.555 MB / 0.6231 GB Notification: Performance of NFFlatten.flatten: time 0.006593/0.4582, allocations: 6.645 MB / 0.8206 GB, free: 12.89 MB / 0.6387 GB Notification: Performance of NFFlatten.resolveConnections: time 0.001848/0.4601, allocations: 1.446 MB / 0.822 GB, free: 11.41 MB / 0.6387 GB Notification: Performance of NFEvalConstants.evaluate: time 0.002841/0.4629, allocations: 1.793 MB / 0.8238 GB, free: 9.613 MB / 0.6387 GB Notification: Performance of NFSimplifyModel.simplify: time 0.001481/0.4644, allocations: 1.442 MB / 0.8252 GB, free: 8.164 MB / 0.6387 GB Notification: Performance of NFPackage.collectConstants: time 0.0001498/0.4646, allocations: 76 kB / 0.8253 GB, free: 8.09 MB / 0.6387 GB Notification: Performance of NFFlatten.collectFunctions: time 0.003116/0.4677, allocations: 1.961 MB / 0.8272 GB, free: 6.125 MB / 0.6387 GB Notification: Performance of NFScalarize.scalarize: time 0.0003776/0.4681, allocations: 446 kB / 0.8276 GB, free: 5.688 MB / 0.6387 GB Notification: Performance of NFVerifyModel.verify: time 0.0008513/0.4689, allocations: 1.035 MB / 0.8286 GB, free: 4.641 MB / 0.6387 GB Notification: Performance of NFConvertDAE.convert: time 0.003598/0.4725, allocations: 3.66 MB / 0.8322 GB, free: 0.9688 MB / 0.6387 GB Notification: Performance of FrontEnd - DAE generated: time 3.226e-06/0.4726, allocations: 0 / 0.8322 GB, free: 0.9688 MB / 0.6387 GB Notification: Performance of FrontEnd: time 1.343e-06/0.4726, allocations: 0 / 0.8322 GB, free: 0.9688 MB / 0.6387 GB Notification: Performance of Transformations before backend: time 1.62e-05/0.4726, allocations: 0 / 0.8322 GB, free: 0.9688 MB / 0.6387 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 301 * Number of variables: 301 Notification: Performance of Generate backend data structure: time 0.00347/0.4761, allocations: 2.261 MB / 0.8344 GB, free: 14.64 MB / 0.6544 GB Notification: Performance of prepare preOptimizeDAE: time 3.221e-05/0.4761, allocations: 8.031 kB / 0.8344 GB, free: 14.63 MB / 0.6544 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.003464/0.4796, allocations: 0.7664 MB / 0.8351 GB, free: 13.86 MB / 0.6544 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.002592/0.4822, allocations: 1.817 MB / 0.8369 GB, free: 12 MB / 0.6544 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0003496/0.4825, allocations: 166.5 kB / 0.8371 GB, free: 11.83 MB / 0.6544 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001932/0.4827, allocations: 128 kB / 0.8372 GB, free: 11.71 MB / 0.6544 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.002885/0.4856, allocations: 1.676 MB / 0.8388 GB, free: 9.91 MB / 0.6544 GB Notification: Performance of preOpt findStateOrder (simulation): time 2.757e-05/0.4857, allocations: 7.922 kB / 0.8388 GB, free: 9.902 MB / 0.6544 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0001187/0.4858, allocations: 59.94 kB / 0.8389 GB, free: 9.844 MB / 0.6544 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 3.406e-05/0.4858, allocations: 28 kB / 0.8389 GB, free: 9.816 MB / 0.6544 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.003342/0.4892, allocations: 1.507 MB / 0.8404 GB, free: 8.301 MB / 0.6544 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 0.009565/0.4988, allocations: 8.858 MB / 0.8491 GB, free: 14.8 MB / 0.67 GB Notification: Performance of preOpt comSubExp (simulation): time 0.00465/0.5034, allocations: 1.489 MB / 0.8505 GB, free: 13.31 MB / 0.67 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.001382/0.5048, allocations: 0.6036 MB / 0.8511 GB, free: 12.7 MB / 0.67 GB Notification: Performance of preOpt evalFunc (simulation): time 0.003684/0.5085, allocations: 2.86 MB / 0.8539 GB, free: 9.578 MB / 0.67 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.001511/0.51, allocations: 0.6588 MB / 0.8545 GB, free: 8.91 MB / 0.67 GB Notification: Performance of preOpt simplifyInStream (simulation): time 0.0005549/0.5106, allocations: 179 kB / 0.8547 GB, free: 8.734 MB / 0.67 GB Notification: Performance of pre-optimization done (n=66): time 2.345e-06/0.5106, allocations: 0 / 0.8547 GB, free: 8.734 MB / 0.67 GB Notification: Performance of matching and sorting (n=66): time 0.004253/0.5149, allocations: 1.683 MB / 0.8563 GB, free: 7.043 MB / 0.67 GB Notification: Performance of inlineWhenForInitialization (initialization): time 5.513e-05/0.5149, allocations: 137.1 kB / 0.8565 GB, free: 6.879 MB / 0.67 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.001728/0.5167, allocations: 1.592 MB / 0.858 GB, free: 5.242 MB / 0.67 GB Notification: Performance of collectPreVariables (initialization): time 8.194e-05/0.5168, allocations: 45.7 kB / 0.8581 GB, free: 5.191 MB / 0.67 GB Notification: Performance of collectInitialEqns (initialization): time 0.0006213/0.5174, allocations: 0.9001 MB / 0.859 GB, free: 4.281 MB / 0.67 GB Notification: Performance of collectInitialBindings (initialization): time 0.0001692/0.5176, allocations: 232.7 kB / 0.8592 GB, free: 4.051 MB / 0.67 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0001228/0.5177, allocations: 97.66 kB / 0.8593 GB, free: 3.949 MB / 0.67 GB Notification: Performance of setup shared object (initialization): time 9.531e-05/0.5178, allocations: 345.9 kB / 0.8596 GB, free: 3.605 MB / 0.67 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.001437/0.5192, allocations: 0.5803 MB / 0.8602 GB, free: 3.023 MB / 0.67 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.001659/0.5209, allocations: 1.049 MB / 0.8612 GB, free: 1.766 MB / 0.67 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.002874/0.5238, allocations: 1.532 MB / 0.8627 GB, free: 60 kB / 0.67 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 5.26e-06/0.5238, allocations: 0 / 0.8627 GB, free: 60 kB / 0.67 GB Notification: Performance of matching and sorting (n=135) (initialization): time 0.003485/0.5273, allocations: 1.75 MB / 0.8644 GB, free: 14.29 MB / 0.6856 GB Notification: Performance of prepare postOptimizeDAE: time 0.0002232/0.5275, allocations: 488 kB / 0.8649 GB, free: 13.64 MB / 0.6856 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 2.148e-05/0.5276, allocations: 15.98 kB / 0.8649 GB, free: 13.62 MB / 0.6856 GB Notification: Performance of postOpt tearingSystem (initialization): time 2.186e-05/0.5276, allocations: 20 kB / 0.8649 GB, free: 13.6 MB / 0.6856 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.00124/0.5288, allocations: 331.5 kB / 0.8652 GB, free: 13.28 MB / 0.6856 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 2.214e-05/0.5289, allocations: 31.86 kB / 0.8652 GB, free: 13.25 MB / 0.6856 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001399/0.5303, allocations: 192.5 kB / 0.8654 GB, free: 13.06 MB / 0.6856 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 9.51e-05/0.5304, allocations: 63.97 kB / 0.8655 GB, free: 13 MB / 0.6856 GB Notification: Performance of prepare postOptimizeDAE: time 5.741e-06/0.5304, allocations: 4 kB / 0.8655 GB, free: 12.99 MB / 0.6856 GB Notification: Performance of postOpt replaceHomotopyWithSimplified (initialization): time 0.003234/0.5336, allocations: 1.528 MB / 0.867 GB, free: 11.46 MB / 0.6856 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.589e-05/0.5337, allocations: 12 kB / 0.867 GB, free: 11.45 MB / 0.6856 GB Notification: Performance of postOpt tearingSystem (initialization): time 1.431e-05/0.5337, allocations: 16.09 kB / 0.867 GB, free: 11.43 MB / 0.6856 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0012/0.5349, allocations: 343.8 kB / 0.8673 GB, free: 11.09 MB / 0.6856 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 1.821e-05/0.5349, allocations: 27.86 kB / 0.8674 GB, free: 11.07 MB / 0.6856 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001301/0.5362, allocations: 202.9 kB / 0.8676 GB, free: 10.87 MB / 0.6856 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 8.622e-05/0.5363, allocations: 59.97 kB / 0.8676 GB, free: 10.81 MB / 0.6856 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 55 * Number of states: 0 () * Number of discrete variables: 7 (pulse.count,$PRE.pulse.count,pulse.T_start,$PRE.pulse.T_start,$whenCondition1,EHea.local_reset,ECoo.local_reset) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (131): * Single equations (assignments): 127 * Array equations: 2 * Algorithm blocks: 1 * Record equations: 1 * 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 0.0006479/0.537, allocations: 0.4928 MB / 0.8681 GB, free: 10.31 MB / 0.6856 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0001758/0.5372, allocations: 181.7 kB / 0.8683 GB, free: 10.13 MB / 0.6856 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.003439/0.5406, allocations: 1.511 MB / 0.8697 GB, free: 8.621 MB / 0.6856 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.544e-05/0.5406, allocations: 15.92 kB / 0.8698 GB, free: 8.605 MB / 0.6856 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 4.509e-06/0.5406, allocations: 4 kB / 0.8698 GB, free: 8.602 MB / 0.6856 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.002825/0.5435, allocations: 1.391 MB / 0.8711 GB, free: 7.145 MB / 0.6856 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 0.005533/0.549, allocations: 3.117 MB / 0.8742 GB, free: 3.941 MB / 0.6856 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 4.588e-06/0.549, allocations: 4.062 kB / 0.8742 GB, free: 3.938 MB / 0.6856 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.001036/0.5501, allocations: 223.7 kB / 0.8744 GB, free: 3.719 MB / 0.6856 GB Notification: Performance of postOpt tearingSystem (simulation): time 9.958e-06/0.5501, allocations: 8 kB / 0.8744 GB, free: 3.711 MB / 0.6856 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 6.22e-05/0.5502, allocations: 23.98 kB / 0.8744 GB, free: 3.688 MB / 0.6856 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 4.739e-06/0.5502, allocations: 4 kB / 0.8744 GB, free: 3.684 MB / 0.6856 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.212e-06/0.5502, allocations: 0 / 0.8744 GB, free: 3.684 MB / 0.6856 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.004533/0.5547, allocations: 2.19 MB / 0.8766 GB, free: 1.465 MB / 0.6856 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0004934/0.5552, allocations: 374.6 kB / 0.8769 GB, free: 1.078 MB / 0.6856 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0002004/0.5554, allocations: 23.98 kB / 0.8769 GB, free: 1.055 MB / 0.6856 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.001238/0.5567, allocations: 175.8 kB / 0.8771 GB, free: 0.8828 MB / 0.6856 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001022/0.5568, allocations: 48.58 kB / 0.8771 GB, free: 0.8359 MB / 0.6856 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 7.025e-05/0.5569, allocations: 35.97 kB / 0.8772 GB, free: 0.8008 MB / 0.6856 GB Notification: Performance of sorting global known variables: time 0.00133/0.5582, allocations: 1.067 MB / 0.8782 GB, free: 15.71 MB / 0.7012 GB Notification: Performance of sort global known variables: time 3.01e-07/0.5582, allocations: 4 kB / 0.8782 GB, free: 15.71 MB / 0.7012 GB Notification: Performance of remove unused functions: time 0.002549/0.5608, allocations: 0.9706 MB / 0.8792 GB, free: 14.73 MB / 0.7012 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 3 * Number of states: 7 (pla.coo.outCon.T,pla.hea.outCon.T,vol.dynBal.U,pum.filter.x[1],pum.filter.x[2],ECoo.y,EHea.y) * Number of discrete variables: 3 ($whenCondition1,pulse.T_start,pulse.count) * Number of discrete states: 1 (pulse.count) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (76): * Single equations (assignments): 67 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 7 * When equations: 2 * 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 0.001086/0.5619, allocations: 0.5558 MB / 0.8797 GB, free: 14.18 MB / 0.7012 GB Notification: Performance of simCode: created initialization part: time 0.005012/0.5669, allocations: 2.325 MB / 0.882 GB, free: 11.82 MB / 0.7012 GB Notification: Performance of simCode: created event and clocks part: time 4.459e-06/0.5669, allocations: 4 kB / 0.882 GB, free: 11.82 MB / 0.7012 GB Notification: Performance of simCode: created simulation system equations: time 0.001447/0.5684, allocations: 0.6325 MB / 0.8826 GB, free: 11.19 MB / 0.7012 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.0033/0.5717, allocations: 0.7858 MB / 0.8834 GB, free: 10.41 MB / 0.7012 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.009155/0.5808, allocations: 4.63 MB / 0.8879 GB, free: 5.738 MB / 0.7012 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0008634/0.5817, allocations: 1.373 MB / 0.8892 GB, free: 4.332 MB / 0.7012 GB Notification: Performance of simCode: alias equations: time 0.001778/0.5835, allocations: 445.5 kB / 0.8897 GB, free: 3.91 MB / 0.7012 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0003992/0.5839, allocations: 155.4 kB / 0.8898 GB, free: 3.758 MB / 0.7012 GB Notification: Performance of SimCode: time 4.91e-07/0.5839, allocations: 0 / 0.8898 GB, free: 3.758 MB / 0.7012 GB Notification: Performance of Templates: time 0.3375/0.9214, allocations: 34.95 MB / 0.9239 GB, free: 164.1 MB / 0.7169 GB make -j1 -f Buildings_maint.7.0.x_Buildings.Experimental.DistrictHeatingCooling.Plants.Validation.Plant_T_ClosedLoop.makefile Environment - environmentSimulation: (rm -f Buildings_maint.7.0.x_Buildings.Experimental.DistrictHeatingCooling.Plants.Validation.Plant_T_ClosedLoop.pipe ; mkfifo Buildings_maint.7.0.x_Buildings.Experimental.DistrictHeatingCooling.Plants.Validation.Plant_T_ClosedLoop.pipe ; head -c 1048576 < Buildings_maint.7.0.x_Buildings.Experimental.DistrictHeatingCooling.Plants.Validation.Plant_T_ClosedLoop.pipe >> ../files/Buildings_maint.7.0.x_Buildings.Experimental.DistrictHeatingCooling.Plants.Validation.Plant_T_ClosedLoop.sim & ./Buildings_maint.7.0.x_Buildings.Experimental.DistrictHeatingCooling.Plants.Validation.Plant_T_ClosedLoop -abortSlowSimulation -alarm=480 -lv LOG_STATS > Buildings_maint.7.0.x_Buildings.Experimental.DistrictHeatingCooling.Plants.Validation.Plant_T_ClosedLoop.pipe 2>&1) Environment - environmentSimulation: