Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr IDEAS_IDEAS.Fluid.HeatExchangers.RadiantSlab.Examples.EmbeddedPipeExample.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 4.0.0+maint.om/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 3.0.0/package.mo", uses=false) Using package IDEAS with version 3.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 3.0.0/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 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(IDEAS.Fluid.HeatExchangers.RadiantSlab.Examples.EmbeddedPipeExample,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="IDEAS_IDEAS.Fluid.HeatExchangers.RadiantSlab.Examples.EmbeddedPipeExample") translateModel(IDEAS.Fluid.HeatExchangers.RadiantSlab.Examples.EmbeddedPipeExample,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="IDEAS_IDEAS.Fluid.HeatExchangers.RadiantSlab.Examples.EmbeddedPipeExample") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001167/0.001167, allocations: 107.3 kB / 16.41 MB, free: 6.406 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001052/0.001052, allocations: 191.4 kB / 17.34 MB, free: 5.695 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.317/1.317, allocations: 222.9 MB / 241 MB, free: 15.07 MB / 206.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 3.0.0/package.mo): time 0.7946/0.7946, allocations: 132.2 MB / 423.4 MB, free: 6.578 MB / 334.1 MB Notification: Performance of FrontEnd - loaded program: time 0.001227/0.001227, allocations: 67.78 kB / 0.582 GB, free: 23.95 MB / 446.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.1548/0.156, allocations: 80.21 MB / 0.6603 GB, free: 10.39 MB / 0.4981 GB Notification: Performance of NFInst.instantiate(IDEAS.Fluid.HeatExchangers.RadiantSlab.Examples.EmbeddedPipeExample): time 0.03388/0.19, allocations: 31.29 MB / 0.6909 GB, free: 10.98 MB / 0.5294 GB Notification: Performance of NFInst.instExpressions: time 0.01283/0.2028, allocations: 8.509 MB / 0.6992 GB, free: 2.445 MB / 0.5294 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.001635/0.2045, allocations: 47.75 kB / 0.6992 GB, free: 2.398 MB / 0.5294 GB Notification: Performance of NFTyping.typeComponents: time 0.001684/0.2062, allocations: 476.8 kB / 0.6997 GB, free: 1.93 MB / 0.5294 GB Notification: Performance of NFTyping.typeBindings: time 0.004507/0.2108, allocations: 1.458 MB / 0.7011 GB, free: 476 kB / 0.5294 GB Notification: Performance of NFTyping.typeClassSections: time 0.003217/0.214, allocations: 1.117 MB / 0.7022 GB, free: 15.36 MB / 0.545 GB Notification: Performance of NFFlatten.flatten: time 0.005125/0.2192, allocations: 3.692 MB / 0.7058 GB, free: 11.66 MB / 0.545 GB Notification: Performance of NFFlatten.resolveConnections: time 0.002297/0.2215, allocations: 1.494 MB / 0.7073 GB, free: 10.13 MB / 0.545 GB Notification: Performance of NFEvalConstants.evaluate: time 0.003442/0.2249, allocations: 1.394 MB / 0.7086 GB, free: 8.742 MB / 0.545 GB Notification: Performance of NFSimplifyModel.simplify: time 0.002017/0.227, allocations: 1.042 MB / 0.7097 GB, free: 7.695 MB / 0.545 GB Notification: Performance of NFPackage.collectConstants: time 0.0004813/0.2275, allocations: 136 kB / 0.7098 GB, free: 7.562 MB / 0.545 GB Notification: Performance of NFFlatten.collectFunctions: time 0.002945/0.2304, allocations: 1.236 MB / 0.711 GB, free: 6.324 MB / 0.545 GB Notification: Performance of NFScalarize.scalarize: time 0.0005581/0.231, allocations: 370.7 kB / 0.7113 GB, free: 5.961 MB / 0.545 GB Notification: Performance of NFVerifyModel.verify: time 0.001491/0.2325, allocations: 0.7776 MB / 0.7121 GB, free: 5.18 MB / 0.545 GB Notification: Performance of NFConvertDAE.convert: time 0.004726/0.2372, allocations: 2.559 MB / 0.7146 GB, free: 2.613 MB / 0.545 GB Notification: Performance of FrontEnd - DAE generated: time 6.071e-06/0.2373, allocations: 0 / 0.7146 GB, free: 2.613 MB / 0.545 GB Notification: Performance of FrontEnd: time 2.375e-06/0.2373, allocations: 0 / 0.7146 GB, free: 2.613 MB / 0.545 GB Notification: Performance of Transformations before backend: time 8.271e-05/0.2374, allocations: 0 / 0.7146 GB, free: 2.613 MB / 0.545 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 212 * Number of variables: 212 Notification: Performance of Generate backend data structure: time 0.005396/0.2428, allocations: 1.926 MB / 0.7165 GB, free: 0.625 MB / 0.545 GB Notification: Performance of prepare preOptimizeDAE: time 5.278e-05/0.2429, allocations: 12.03 kB / 0.7165 GB, free: 0.6133 MB / 0.545 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0008347/0.2437, allocations: 162.5 kB / 0.7166 GB, free: 464 kB / 0.545 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.003352/0.2471, allocations: 1.394 MB / 0.718 GB, free: 15 MB / 0.5606 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 6.5e-05/0.2472, allocations: 62 kB / 0.7181 GB, free: 14.94 MB / 0.5606 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.000243/0.2474, allocations: 87.94 kB / 0.7182 GB, free: 14.86 MB / 0.5606 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.002448/0.2499, allocations: 1.198 MB / 0.7193 GB, free: 13.61 MB / 0.5606 GB Notification: Performance of preOpt findStateOrder (simulation): time 4.227e-05/0.2499, allocations: 4 kB / 0.7193 GB, free: 13.6 MB / 0.5606 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0001161/0.25, allocations: 32 kB / 0.7194 GB, free: 13.57 MB / 0.5606 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 4.813e-05/0.2501, allocations: 41.92 kB / 0.7194 GB, free: 13.53 MB / 0.5606 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.001828/0.2519, allocations: 0.9093 MB / 0.7203 GB, free: 12.62 MB / 0.5606 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 0.006987/0.2589, allocations: 5.199 MB / 0.7254 GB, free: 7.059 MB / 0.5606 GB Notification: Performance of preOpt comSubExp (simulation): time 0.001624/0.2606, allocations: 0.688 MB / 0.726 GB, free: 6.367 MB / 0.5606 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.000618/0.2612, allocations: 339.2 kB / 0.7264 GB, free: 6.031 MB / 0.5606 GB Notification: Performance of preOpt evalFunc (simulation): time 0.001522/0.2627, allocations: 1.417 MB / 0.7277 GB, free: 4.301 MB / 0.5606 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.0008652/0.2636, allocations: 407.4 kB / 0.7281 GB, free: 3.891 MB / 0.5606 GB Notification: Performance of pre-optimization done (n=56): time 3.447e-06/0.2636, allocations: 4 kB / 0.7281 GB, free: 3.887 MB / 0.5606 GB Notification: Performance of matching and sorting (n=56): time 0.002935/0.2666, allocations: 1.192 MB / 0.7293 GB, free: 2.648 MB / 0.5606 GB Notification: Performance of inlineWhenForInitialization (initialization): time 6.126e-05/0.2667, allocations: 67.95 kB / 0.7294 GB, free: 2.57 MB / 0.5606 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.002112/0.2688, allocations: 1.056 MB / 0.7304 GB, free: 1.496 MB / 0.5606 GB Notification: Performance of collectPreVariables (initialization): time 0.0001288/0.2689, allocations: 41.7 kB / 0.7304 GB, free: 1.449 MB / 0.5606 GB Notification: Performance of collectInitialEqns (initialization): time 0.0007512/0.2697, allocations: 0.5619 MB / 0.731 GB, free: 0.8789 MB / 0.5606 GB Notification: Performance of collectInitialBindings (initialization): time 0.0003368/0.27, allocations: 205.1 kB / 0.7312 GB, free: 0.6758 MB / 0.5606 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0002707/0.2703, allocations: 134.2 kB / 0.7313 GB, free: 0.5391 MB / 0.5606 GB Notification: Performance of setup shared object (initialization): time 0.0001556/0.2705, allocations: 330 kB / 0.7316 GB, free: 216 kB / 0.5606 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0006482/0.2711, allocations: 287.3 kB / 0.7319 GB, free: 15.93 MB / 0.5762 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0007396/0.2719, allocations: 450.1 kB / 0.7323 GB, free: 15.43 MB / 0.5762 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.00137/0.2733, allocations: 0.7576 MB / 0.7331 GB, free: 14.61 MB / 0.5762 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 7.024e-06/0.2733, allocations: 0 / 0.7331 GB, free: 14.61 MB / 0.5762 GB Notification: Performance of matching and sorting (n=80) (initialization): time 0.002088/0.2754, allocations: 0.9577 MB / 0.734 GB, free: 13.62 MB / 0.5762 GB Notification: Performance of prepare postOptimizeDAE: time 4.474e-05/0.2754, allocations: 41.64 kB / 0.734 GB, free: 13.58 MB / 0.5762 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.303e-05/0.2755, allocations: 4 kB / 0.734 GB, free: 13.57 MB / 0.5762 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0003155/0.2758, allocations: 69.67 kB / 0.7341 GB, free: 13.5 MB / 0.5762 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0005855/0.2764, allocations: 160.1 kB / 0.7343 GB, free: 13.34 MB / 0.5762 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.002509/0.2789, allocations: 3.11 MB / 0.7373 GB, free: 9.938 MB / 0.5762 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.000908/0.2798, allocations: 91.38 kB / 0.7374 GB, free: 9.848 MB / 0.5762 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 7.631e-05/0.2799, allocations: 24 kB / 0.7374 GB, free: 9.824 MB / 0.5762 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.001079/0.281, allocations: 0.6377 MB / 0.738 GB, free: 9.184 MB / 0.5762 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.000685/0.2817, allocations: 444.1 kB / 0.7385 GB, free: 8.691 MB / 0.5762 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.001258/0.283, allocations: 0.7537 MB / 0.7392 GB, free: 7.879 MB / 0.5762 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 3.206e-06/0.283, allocations: 4 kB / 0.7392 GB, free: 7.875 MB / 0.5762 GB Notification: Performance of matching and sorting (n=80) (initialization_lambda0): time 0.001918/0.2849, allocations: 0.95 MB / 0.7401 GB, free: 6.902 MB / 0.5762 GB Notification: Performance of prepare postOptimizeDAE: time 3.387e-05/0.2849, allocations: 37.69 kB / 0.7402 GB, free: 6.859 MB / 0.5762 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 7.043e-06/0.285, allocations: 7.938 kB / 0.7402 GB, free: 6.852 MB / 0.5762 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0002221/0.2852, allocations: 69.67 kB / 0.7402 GB, free: 6.777 MB / 0.5762 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0005527/0.2857, allocations: 143.8 kB / 0.7404 GB, free: 6.637 MB / 0.5762 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.002338/0.2881, allocations: 3.114 MB / 0.7434 GB, free: 3.238 MB / 0.5762 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0009475/0.2891, allocations: 95.52 kB / 0.7435 GB, free: 3.145 MB / 0.5762 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 7.563e-05/0.2891, allocations: 35.92 kB / 0.7435 GB, free: 3.109 MB / 0.5762 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 18 * Number of states: 0 () * Number of discrete variables: 5 (trapezoid.count,$PRE.trapezoid.count,trapezoid.T_start,$PRE.trapezoid.T_start,$whenCondition1) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (75): * Single equations (assignments): 72 * Array equations: 0 * Algorithm blocks: 1 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 2 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 2 systems {(1,2,100.0%), (1,2,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 0 systems Notification: Performance of prepare postOptimizeDAE: time 0.0002676/0.2894, allocations: 220.3 kB / 0.7437 GB, free: 2.887 MB / 0.5762 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0003283/0.2898, allocations: 110.7 kB / 0.7439 GB, free: 2.777 MB / 0.5762 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.002014/0.2918, allocations: 0.9493 MB / 0.7448 GB, free: 1.824 MB / 0.5762 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.313e-05/0.2918, allocations: 4 kB / 0.7448 GB, free: 1.82 MB / 0.5762 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 6.683e-06/0.2918, allocations: 8 kB / 0.7448 GB, free: 1.812 MB / 0.5762 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.001346/0.2932, allocations: 0.7922 MB / 0.7456 GB, free: 0.9844 MB / 0.5762 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.4257/0.7189, allocations: 2.126 MB / 0.7476 GB, free: 82.2 MB / 0.5762 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 7.404e-06/0.719, allocations: 3.281 kB / 0.7476 GB, free: 82.2 MB / 0.5762 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0005681/0.7196, allocations: 113.6 kB / 0.7478 GB, free: 82.2 MB / 0.5762 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0001895/0.7198, allocations: 58.16 kB / 0.7478 GB, free: 82.18 MB / 0.5762 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 4.751e-05/0.7198, allocations: 17.7 kB / 0.7478 GB, free: 82.18 MB / 0.5762 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.001724/0.7215, allocations: 2.944 MB / 0.7507 GB, free: 79.52 MB / 0.5762 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 3.988e-06/0.7216, allocations: 3.797 kB / 0.7507 GB, free: 79.52 MB / 0.5762 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.002643/0.7242, allocations: 1.335 MB / 0.752 GB, free: 79.35 MB / 0.5762 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0004813/0.7247, allocations: 284.8 kB / 0.7523 GB, free: 79.25 MB / 0.5762 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001465/0.7249, allocations: 25.5 kB / 0.7523 GB, free: 79.25 MB / 0.5762 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.000703/0.7256, allocations: 48.36 kB / 0.7523 GB, free: 79.25 MB / 0.5762 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001593/0.7257, allocations: 50.53 kB / 0.7524 GB, free: 79.25 MB / 0.5762 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 6.913e-05/0.7258, allocations: 30.69 kB / 0.7524 GB, free: 79.25 MB / 0.5762 GB Notification: Performance of sorting global known variables: time 0.001151/0.727, allocations: 0.7503 MB / 0.7532 GB, free: 79.01 MB / 0.5762 GB Notification: Performance of sort global known variables: time 2.3e-07/0.727, allocations: 0 / 0.7532 GB, free: 79.01 MB / 0.5762 GB Notification: Performance of remove unused functions: time 0.001992/0.729, allocations: 0.6969 MB / 0.7538 GB, free: 78.96 MB / 0.5762 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 4 * Number of states: 3 (embeddedPipe.vol[1].dynBal.U,embeddedPipe.vol[2].dynBal.U,senTem.T) * Number of discrete variables: 3 ($whenCondition1,trapezoid.T_start,trapezoid.count) * Number of discrete states: 1 (trapezoid.count) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (59): * Single equations (assignments): 50 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 5 * When equations: 2 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 2 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 2 systems {(1,2,100.0%), (1,2,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 0 systems Notification: Performance of Backend phase and start with SimCode phase: time 0.001006/0.73, allocations: 405.6 kB / 0.7542 GB, free: 78.86 MB / 0.5762 GB Notification: Performance of simCode: created initialization part: time 0.003278/0.7333, allocations: 1.675 MB / 0.7559 GB, free: 77.96 MB / 0.5762 GB Notification: Performance of simCode: created event and clocks part: time 6.622e-06/0.7333, allocations: 0.9375 kB / 0.7559 GB, free: 77.96 MB / 0.5762 GB Notification: Performance of simCode: created simulation system equations: time 0.001028/0.7343, allocations: 0.5837 MB / 0.7564 GB, free: 77.62 MB / 0.5762 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.002942/0.7373, allocations: 0.5722 MB / 0.757 GB, free: 77.52 MB / 0.5762 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.005295/0.7426, allocations: 2.466 MB / 0.7594 GB, free: 76.41 MB / 0.5762 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0009522/0.7436, allocations: 1.272 MB / 0.7606 GB, free: 75.62 MB / 0.5762 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0003287/0.7439, allocations: 100.6 kB / 0.7607 GB, free: 75.61 MB / 0.5762 GB Notification: Performance of SimCode: time 6.21e-07/0.7439, allocations: 0 / 0.7607 GB, free: 75.61 MB / 0.5762 GB Notification: Performance of Templates: time 0.04158/0.7855, allocations: 34.33 MB / 0.7943 GB, free: 54.34 MB / 0.5762 GB make -j1 -f IDEAS_IDEAS.Fluid.HeatExchangers.RadiantSlab.Examples.EmbeddedPipeExample.makefile (rm -f IDEAS_IDEAS.Fluid.HeatExchangers.RadiantSlab.Examples.EmbeddedPipeExample.pipe ; mkfifo IDEAS_IDEAS.Fluid.HeatExchangers.RadiantSlab.Examples.EmbeddedPipeExample.pipe ; head -c 1048576 < IDEAS_IDEAS.Fluid.HeatExchangers.RadiantSlab.Examples.EmbeddedPipeExample.pipe >> ../files/IDEAS_IDEAS.Fluid.HeatExchangers.RadiantSlab.Examples.EmbeddedPipeExample.sim & ./IDEAS_IDEAS.Fluid.HeatExchangers.RadiantSlab.Examples.EmbeddedPipeExample -abortSlowSimulation -alarm=480 -lv LOG_STATS > IDEAS_IDEAS.Fluid.HeatExchangers.RadiantSlab.Examples.EmbeddedPipeExample.pipe 2>&1)