Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr OpenIPSL_dev_OpenIPSL.Examples.Tutorial.Example_3.Example_3.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/Modelica 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/OpenIPSL 3.1.0-master/package.mo", uses=false) Using package OpenIPSL with version 3.1.0-dev (/home/hudson/saved_omc/libraries/.openmodelica/libraries/OpenIPSL 3.1.0-master/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 Modelica with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 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(OpenIPSL.Examples.Tutorial.Example_3.Example_3,tolerance=1e-06,outputFormat="empty",numberOfIntervals=40000,variableFilter="",fileNamePrefix="OpenIPSL_dev_OpenIPSL.Examples.Tutorial.Example_3.Example_3") translateModel(OpenIPSL.Examples.Tutorial.Example_3.Example_3,tolerance=1e-06,outputFormat="empty",numberOfIntervals=40000,variableFilter="",fileNamePrefix="OpenIPSL_dev_OpenIPSL.Examples.Tutorial.Example_3.Example_3") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001323/0.001323, allocations: 115.3 kB / 15.34 MB, free: 0.5156 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.328/1.328, allocations: 222.9 MB / 239 MB, free: 4.699 MB / 190.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001393/0.001393, allocations: 188.5 kB / 289.3 MB, free: 2.441 MB / 238.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/OpenIPSL 3.1.0-master/package.mo): time 0.5399/0.5399, allocations: 91.88 MB / 431.3 MB, free: 9.355 MB / 302.1 MB Notification: Performance of FrontEnd - loaded program: time 0.002839/0.002839, allocations: 83.86 kB / 0.5014 GB, free: 8.008 MB / 382.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.3647/0.3675, allocations: 71.27 MB / 0.571 GB, free: 36.68 MB / 430.1 MB Notification: Performance of NFInst.instantiate(OpenIPSL.Examples.Tutorial.Example_3.Example_3): time 0.009668/0.3772, allocations: 14.06 MB / 0.5847 GB, free: 27.44 MB / 430.1 MB Notification: Performance of NFInst.instExpressions: time 0.007486/0.3848, allocations: 3.723 MB / 0.5883 GB, free: 24.75 MB / 430.1 MB Notification: Performance of NFInst.updateImplicitVariability: time 0.003583/0.3884, allocations: 33.53 kB / 0.5884 GB, free: 24.75 MB / 430.1 MB Notification: Performance of NFTyping.typeComponents: time 0.002183/0.3906, allocations: 391.3 kB / 0.5888 GB, free: 24.59 MB / 430.1 MB Notification: Performance of NFTyping.typeBindings: time 0.00514/0.3958, allocations: 1.244 MB / 0.59 GB, free: 23.75 MB / 430.1 MB Notification: Performance of NFTyping.typeClassSections: time 0.003035/0.3988, allocations: 1.254 MB / 0.5912 GB, free: 23 MB / 430.1 MB Notification: Performance of NFFlatten.flatten: time 0.006151/0.405, allocations: 4.088 MB / 0.5952 GB, free: 20.88 MB / 430.1 MB Notification: Performance of NFFlatten.resolveConnections: time 0.001525/0.4065, allocations: 0.9362 MB / 0.5961 GB, free: 20.38 MB / 430.1 MB Notification: Performance of NFEvalConstants.evaluate: time 0.002512/0.4091, allocations: 1.595 MB / 0.5977 GB, free: 19.54 MB / 430.1 MB Notification: Performance of NFSimplifyModel.simplify: time 0.002039/0.4111, allocations: 1.933 MB / 0.5995 GB, free: 18.56 MB / 430.1 MB Notification: Performance of NFPackage.collectConstants: time 0.0007097/0.4119, allocations: 363.6 kB / 0.5999 GB, free: 18.56 MB / 430.1 MB Notification: Performance of NFFlatten.collectFunctions: time 0.001082/0.4129, allocations: 0.5034 MB / 0.6004 GB, free: 18.52 MB / 430.1 MB Notification: Performance of NFScalarize.scalarize: time 0.0005294/0.4135, allocations: 0.8273 MB / 0.6012 GB, free: 17.94 MB / 430.1 MB Notification: Performance of NFVerifyModel.verify: time 0.00135/0.4148, allocations: 1.701 MB / 0.6029 GB, free: 16.75 MB / 430.1 MB Notification: Performance of NFConvertDAE.convert: time 0.00437/0.4192, allocations: 4.48 MB / 0.6072 GB, free: 14.84 MB / 430.1 MB Notification: Performance of FrontEnd - DAE generated: time 6.462e-06/0.4192, allocations: 0 / 0.6072 GB, free: 14.84 MB / 430.1 MB Notification: Performance of FrontEnd: time 2.905e-06/0.4193, allocations: 0.7031 kB / 0.6072 GB, free: 14.84 MB / 430.1 MB Notification: Performance of Transformations before backend: time 0.0001426/0.4194, allocations: 0 / 0.6072 GB, free: 14.84 MB / 430.1 MB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 463 * Number of variables: 463 Notification: Performance of Generate backend data structure: time 0.01945/0.4389, allocations: 5.365 MB / 0.6125 GB, free: 12.3 MB / 430.1 MB Notification: Performance of prepare preOptimizeDAE: time 5.466e-05/0.4389, allocations: 10.39 kB / 0.6125 GB, free: 12.3 MB / 430.1 MB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.01118/0.4501, allocations: 1.618 MB / 0.6141 GB, free: 11.94 MB / 430.1 MB Notification: Performance of preOpt evaluateParameters (simulation): time 0.004485/0.4546, allocations: 2.021 MB / 0.616 GB, free: 10.7 MB / 430.1 MB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0003906/0.455, allocations: 464.6 kB / 0.6165 GB, free: 10.32 MB / 430.1 MB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0004284/0.4555, allocations: 198.8 kB / 0.6167 GB, free: 10.25 MB / 430.1 MB Notification: Performance of preOpt clockPartitioning (simulation): time 0.004743/0.4602, allocations: 2.425 MB / 0.619 GB, free: 9.301 MB / 430.1 MB Notification: Performance of preOpt findStateOrder (simulation): time 3.821e-05/0.4603, allocations: 1.062 kB / 0.619 GB, free: 9.301 MB / 430.1 MB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0002032/0.4605, allocations: 71.61 kB / 0.6191 GB, free: 9.246 MB / 430.1 MB Notification: Performance of preOpt inlineArrayEqn (simulation): time 3.214e-05/0.4605, allocations: 45.17 kB / 0.6191 GB, free: 9.246 MB / 430.1 MB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.004498/0.465, allocations: 2.239 MB / 0.6213 GB, free: 8.441 MB / 430.1 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 0.01668/0.4817, allocations: 9.279 MB / 0.6304 GB, free: 1.348 MB / 430.1 MB Notification: Performance of preOpt comSubExp (simulation): time 0.01004/0.4918, allocations: 4.407 MB / 0.6347 GB, free: 12.71 MB / 446.1 MB Notification: Performance of preOpt resolveLoops (simulation): time 0.002918/0.4947, allocations: 1.566 MB / 0.6362 GB, free: 11.13 MB / 446.1 MB Notification: Performance of preOpt evalFunc (simulation): time 0.0002029/0.495, allocations: 37.97 kB / 0.6363 GB, free: 11.09 MB / 446.1 MB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.003338/0.4983, allocations: 1.805 MB / 0.638 GB, free: 9.266 MB / 446.1 MB Notification: Performance of pre-optimization done (n=242): time 4.127e-06/0.4983, allocations: 0 / 0.638 GB, free: 9.266 MB / 446.1 MB Notification: Performance of matching and sorting (n=242): time 0.07016/0.5685, allocations: 16.55 MB / 0.6542 GB, free: 8.578 MB / 462.1 MB Notification: Performance of inlineWhenForInitialization (initialization): time 0.0001209/0.5686, allocations: 231.6 kB / 0.6544 GB, free: 8.301 MB / 462.1 MB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.004361/0.573, allocations: 2.515 MB / 0.6569 GB, free: 5.77 MB / 462.1 MB Notification: Performance of collectPreVariables (initialization): time 0.000836/0.5739, allocations: 77.69 kB / 0.6569 GB, free: 5.688 MB / 462.1 MB Notification: Performance of collectInitialEqns (initialization): time 0.0009061/0.5748, allocations: 1.118 MB / 0.658 GB, free: 4.559 MB / 462.1 MB Notification: Performance of collectInitialBindings (initialization): time 0.001066/0.5759, allocations: 0.8589 MB / 0.6589 GB, free: 3.688 MB / 462.1 MB Notification: Performance of simplifyInitialFunctions (initialization): time 0.001029/0.5769, allocations: 0.5853 MB / 0.6594 GB, free: 3.094 MB / 462.1 MB Notification: Performance of setup shared object (initialization): time 8.346e-05/0.577, allocations: 305.1 kB / 0.6597 GB, free: 2.793 MB / 462.1 MB Notification: Performance of preBalanceInitialSystem (initialization): time 0.003104/0.5801, allocations: 1.607 MB / 0.6613 GB, free: 1.184 MB / 462.1 MB Notification: Performance of partitionIndependentBlocks (initialization): time 0.003346/0.5834, allocations: 1.942 MB / 0.6632 GB, free: 15.17 MB / 478.1 MB Notification: Performance of analyzeInitialSystem (initialization): time 0.04569/0.6291, allocations: 11.26 MB / 0.6742 GB, free: 3.66 MB / 478.1 MB Notification: Performance of solveInitialSystemEqSystem (initialization): time 1.134e-05/0.6292, allocations: 0 / 0.6742 GB, free: 3.66 MB / 478.1 MB Notification: Performance of matching and sorting (n=422) (initialization): time 0.02289/0.6521, allocations: 7.499 MB / 0.6815 GB, free: 12.07 MB / 494.1 MB Notification: Performance of prepare postOptimizeDAE: time 0.0001442/0.6523, allocations: 170.2 kB / 0.6817 GB, free: 11.87 MB / 494.1 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.798e-05/0.6523, allocations: 4 kB / 0.6817 GB, free: 11.86 MB / 494.1 MB Notification: Performance of postOpt tearingSystem (initialization): time 0.01088/0.6632, allocations: 2.827 MB / 0.6844 GB, free: 9.012 MB / 494.1 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.003817/0.667, allocations: 0.6514 MB / 0.6851 GB, free: 8.359 MB / 494.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.03605/0.7031, allocations: 19.2 MB / 0.7038 GB, free: 4.453 MB / 0.4981 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.004814/0.708, allocations: 413.2 kB / 0.7042 GB, free: 4.047 MB / 0.4981 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0004911/0.7085, allocations: 116 kB / 0.7043 GB, free: 3.934 MB / 0.4981 GB Warning: Assuming fixed start value for the following 9 variables: gen3.gen.w:VARIABLE(flow=false start = 1.0 fixed = true ) "Rotor speed [pu]" type: Real gen2.gen.w:VARIABLE(flow=false start = 1.0 fixed = true ) "Rotor speed [pu]" type: Real gen1.gen.w:VARIABLE(flow=false start = 1.0 fixed = true ) "Rotor speed [pu]" type: Real gen1.gen.delta:VARIABLE(flow=false start = gen1.gen.delta0 unit = "rad" fixed = true ) "Rotor angle" type: Real gen1.gen.e1q:VARIABLE(start = gen1.gen.e1q0 unit = "1" fixed = true ) "q-axis transient voltage" type: Real gen1.gen.e1d:VARIABLE(start = gen1.gen.e1d0 unit = "1" fixed = true ) "d-axis transient voltage" type: Real gen1.AVR.firstOrder2.y:VARIABLE(flow=false start = gen1.AVR.firstOrder2.y_start fixed = true ) "Connector of Real output signal" type: Real gen2.gen.delta:VARIABLE(flow=false start = gen2.gen.delta0 unit = "rad" fixed = true ) "Rotor angle" type: Real gen2.gen.e1q:VARIABLE(start = gen2.gen.e1q0 unit = "1" fixed = true ) "q-axis transient voltage" type: Real Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 22 * Number of states: 0 () * Number of discrete variables: 6 ($whenCondition2,$whenCondition1,$whenCondition4,$whenCondition3,$whenCondition6,$whenCondition5) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (351): * Single equations (assignments): 338 * Array equations: 0 * Algorithm blocks: 6 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 2 * Torn equation systems: 5 * Mixed (continuous/discrete) equation systems: 0 Notification: Equation system details (not torn): * Constant Jacobian (size): 0 systems * Linear Jacobian (size,density): 2 systems {(2,100.0%), (2,100.0%)} * Non-linear Jacobian (size): 0 systems * Without analytic Jacobian (size): 0 systems Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 2 systems {(1,1,100.0%), (1,1,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 3 systems {(4,2), (29,30), (1,4)} Notification: Performance of prepare postOptimizeDAE: time 0.001438/0.7099, allocations: 0.61 MB / 0.7049 GB, free: 3.301 MB / 0.4981 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0007919/0.7107, allocations: 308.2 kB / 0.7052 GB, free: 2.996 MB / 0.4981 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.02343/0.7342, allocations: 7.38 MB / 0.7124 GB, free: 11.56 MB / 0.5137 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 3.164e-05/0.7342, allocations: 31.94 kB / 0.7125 GB, free: 11.53 MB / 0.5137 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 5.851e-06/0.7342, allocations: 0 / 0.7125 GB, free: 11.53 MB / 0.5137 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 6.459e-05/0.7343, allocations: 11.95 kB / 0.7125 GB, free: 11.52 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 0.02988/0.7642, allocations: 11.57 MB / 0.7238 GB, free: 15.68 MB / 0.5294 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 3.194e-05/0.7643, allocations: 8.078 kB / 0.7238 GB, free: 15.67 MB / 0.5294 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.001888/0.7662, allocations: 243.7 kB / 0.724 GB, free: 15.43 MB / 0.5294 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.01254/0.7787, allocations: 3.432 MB / 0.7274 GB, free: 11.99 MB / 0.5294 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0006546/0.7794, allocations: 59.92 kB / 0.7274 GB, free: 11.93 MB / 0.5294 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.04192/0.8213, allocations: 20.9 MB / 0.7478 GB, free: 6.434 MB / 0.545 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 2.955e-06/0.8214, allocations: 0 / 0.7478 GB, free: 6.434 MB / 0.545 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.02695/0.8483, allocations: 9.208 MB / 0.7568 GB, free: 13.15 MB / 0.5606 GB Notification: Performance of postOpt removeConstants (simulation): time 0.001392/0.8497, allocations: 448.6 kB / 0.7572 GB, free: 12.69 MB / 0.5606 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0007401/0.8505, allocations: 52 kB / 0.7573 GB, free: 12.64 MB / 0.5606 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.002587/0.8531, allocations: 223.7 kB / 0.7575 GB, free: 12.42 MB / 0.5606 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.001292/0.8544, allocations: 382.5 kB / 0.7579 GB, free: 12.05 MB / 0.5606 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.000189/0.8546, allocations: 63.98 kB / 0.7579 GB, free: 11.98 MB / 0.5606 GB Notification: Performance of sorting global known variables: time 0.002673/0.8573, allocations: 1.681 MB / 0.7596 GB, free: 10.3 MB / 0.5606 GB Notification: Performance of sort global known variables: time 1.9e-07/0.8573, allocations: 0 / 0.7596 GB, free: 10.3 MB / 0.5606 GB Notification: Performance of remove unused functions: time 0.003117/0.8604, allocations: 1.022 MB / 0.7606 GB, free: 9.277 MB / 0.5606 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 4 * Number of states: 24 (gen1.gen.delta,gen1.gen.w,gen1.gen.e1q,gen1.gen.e1d,gen1.AVR.ExcitationSystem.x_scaled[1],gen1.AVR.derivativeBlock.x,gen1.AVR.firstOrder2.y,gen1.AVR.simpleLagLim.state,gen2.gen.delta,gen2.gen.w,gen2.gen.e1q,gen2.gen.e1d,gen2.AVR.ExcitationSystem.x_scaled[1],gen2.AVR.derivativeBlock.x,gen2.AVR.firstOrder2.y,gen2.AVR.simpleLagLim.state,gen3.gen.delta,gen3.gen.w,gen3.gen.e1q,gen3.gen.e1d,gen3.AVR.ExcitationSystem.x_scaled[1],gen3.AVR.derivativeBlock.x,gen3.AVR.firstOrder2.y,gen3.AVR.simpleLagLim.state) * Number of discrete variables: 6 ($whenCondition5,$whenCondition6,$whenCondition3,$whenCondition4,$whenCondition1,$whenCondition2) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (148): * Single equations (assignments): 141 * Array equations: 0 * Algorithm blocks: 3 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 4 * 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): 4 systems {(41,45), (1,6), (1,6), (1,6)} Notification: Performance of Backend phase and start with SimCode phase: time 0.0003982/0.8608, allocations: 177.2 kB / 0.7607 GB, free: 9.094 MB / 0.5606 GB Notification: Performance of simCode: created initialization part: time 0.01502/0.8758, allocations: 5.98 MB / 0.7666 GB, free: 2.938 MB / 0.5606 GB Notification: Performance of simCode: created event and clocks part: time 1.032e-05/0.8759, allocations: 4 kB / 0.7666 GB, free: 2.934 MB / 0.5606 GB Notification: Performance of simCode: created simulation system equations: time 0.2206/1.096, allocations: 3.633 MB / 0.7701 GB, free: 164.3 MB / 0.5606 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.003226/1.1, allocations: 295.3 kB / 0.7704 GB, free: 164.3 MB / 0.5606 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.01027/1.11, allocations: 6.571 MB / 0.7768 GB, free: 161.3 MB / 0.5606 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.001115/1.111, allocations: 1.783 MB / 0.7786 GB, free: 160.5 MB / 0.5606 GB Notification: Performance of simCode: alias equations: time 0.001424/1.113, allocations: 283.6 kB / 0.7788 GB, free: 160.4 MB / 0.5606 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0006538/1.113, allocations: 175.3 kB / 0.779 GB, free: 160.4 MB / 0.5606 GB Notification: Performance of SimCode: time 6.31e-07/1.113, allocations: 0 / 0.779 GB, free: 160.4 MB / 0.5606 GB Notification: Performance of Templates: time 0.08521/1.199, allocations: 54.82 MB / 0.8325 GB, free: 132.3 MB / 0.5606 GB make -j1 -f OpenIPSL_dev_OpenIPSL.Examples.Tutorial.Example_3.Example_3.makefile (rm -f OpenIPSL_dev_OpenIPSL.Examples.Tutorial.Example_3.Example_3.pipe ; mkfifo OpenIPSL_dev_OpenIPSL.Examples.Tutorial.Example_3.Example_3.pipe ; head -c 1048576 < OpenIPSL_dev_OpenIPSL.Examples.Tutorial.Example_3.Example_3.pipe >> ../files/OpenIPSL_dev_OpenIPSL.Examples.Tutorial.Example_3.Example_3.sim & ./OpenIPSL_dev_OpenIPSL.Examples.Tutorial.Example_3.Example_3 -abortSlowSimulation -alarm=480 -lv LOG_STATS > OpenIPSL_dev_OpenIPSL.Examples.Tutorial.Example_3.Example_3.pipe 2>&1)