Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr Buildings_8_Buildings.HeatTransfer.Windows.BaseClasses.Examples.Overhang.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.HeatTransfer.Windows.BaseClasses.Examples.Overhang,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_8_Buildings.HeatTransfer.Windows.BaseClasses.Examples.Overhang") translateModel(Buildings.HeatTransfer.Windows.BaseClasses.Examples.Overhang,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_8_Buildings.HeatTransfer.Windows.BaseClasses.Examples.Overhang") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001728/0.001728, allocations: 105.1 kB / 16.29 MB, free: 6.105 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001432/0.001432, allocations: 187.3 kB / 17.22 MB, free: 5.723 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 1.397/1.397, allocations: 205.1 MB / 223.1 MB, free: 12.32 MB / 190.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.1.4-maint.8.1.x/package.mo): time 1.782/1.782, allocations: 292.3 MB / 0.5495 GB, free: 17.37 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 0.00138/0.00138, allocations: 67.91 kB / 0.6722 GB, free: 6.566 MB / 0.545 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.188/0.1894, allocations: 114.6 MB / 0.7841 GB, free: 3.898 MB / 0.6544 GB Notification: Performance of NFInst.instantiate(Buildings.HeatTransfer.Windows.BaseClasses.Examples.Overhang): time 0.3361/0.5256, allocations: 4.785 MB / 0.7887 GB, free: 46.1 MB / 0.6544 GB Notification: Performance of NFInst.instExpressions: time 0.1571/0.6827, allocations: 151.2 MB / 0.9364 GB, free: 14.62 MB / 0.7325 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.0008894/0.6836, allocations: 19.88 kB / 0.9364 GB, free: 14.61 MB / 0.7325 GB Notification: Performance of NFTyping.typeComponents: time 0.0006201/0.6843, allocations: 182.3 kB / 0.9366 GB, free: 14.43 MB / 0.7325 GB [/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/Utilities/Strings.mo:216:3-259:11:writable] Warning: Pure function 'Modelica.Utilities.Strings.find' contains a call to impure function 'Modelica.Utilities.Strings.length'. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.1.4-maint.8.1.x/BoundaryConditions/WeatherData/BaseClasses/getHeaderElementTMY3.mo:2:1-105:25:writable] Warning: Pure function 'Buildings.BoundaryConditions.WeatherData.BaseClasses.getHeaderElementTMY3' contains a call to impure function 'Modelica.Utilities.Streams.readLine'. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.1.4-maint.8.1.x/BoundaryConditions/WeatherData/BaseClasses/getLongitudeTMY3.mo:2:1-48:21:writable] Warning: Pure function 'Buildings.BoundaryConditions.WeatherData.BaseClasses.getLongitudeTMY3' contains a call to impure function 'Buildings.BoundaryConditions.WeatherData.BaseClasses.getHeaderElementTMY3'. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.1.4-maint.8.1.x/BoundaryConditions/WeatherData/BaseClasses/getLatitudeTMY3.mo:2:1-48:20:writable] Warning: Pure function 'Buildings.BoundaryConditions.WeatherData.BaseClasses.getLatitudeTMY3' contains a call to impure function 'Buildings.BoundaryConditions.WeatherData.BaseClasses.getHeaderElementTMY3'. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.1.4-maint.8.1.x/BoundaryConditions/WeatherData/BaseClasses/getTimeZoneTMY3.mo:2:1-47:20:writable] Warning: Pure function 'Buildings.BoundaryConditions.WeatherData.BaseClasses.getTimeZoneTMY3' contains a call to impure function 'Buildings.BoundaryConditions.WeatherData.BaseClasses.getHeaderElementTMY3'. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/Utilities/Strings.mo:139:3-175:14:writable] Warning: Pure function 'Modelica.Utilities.Strings.isEmpty' contains a call to impure function 'Modelica.Utilities.Strings.Advanced.skipWhiteSpace'. Notification: Performance of NFTyping.typeBindings: time 0.001731/0.686, allocations: 491.9 kB / 0.937 GB, free: 13.95 MB / 0.7325 GB Notification: Performance of NFTyping.typeClassSections: time 0.002261/0.6883, allocations: 0.9278 MB / 0.9379 GB, free: 13.03 MB / 0.7325 GB Notification: Performance of NFFlatten.flatten: time 0.001758/0.6901, allocations: 1.617 MB / 0.9395 GB, free: 11.41 MB / 0.7325 GB Notification: Performance of NFFlatten.resolveConnections: time 0.001185/0.6913, allocations: 0.8271 MB / 0.9403 GB, free: 10.56 MB / 0.7325 GB Notification: Performance of NFEvalConstants.evaluate: time 0.0009791/0.6923, allocations: 0.6268 MB / 0.9409 GB, free: 9.93 MB / 0.7325 GB Notification: Performance of NFSimplifyModel.simplify: time 0.000776/0.6931, allocations: 0.673 MB / 0.9416 GB, free: 9.254 MB / 0.7325 GB Notification: Performance of NFPackage.collectConstants: time 0.0002099/0.6933, allocations: 152 kB / 0.9417 GB, free: 9.105 MB / 0.7325 GB Notification: Performance of NFFlatten.collectFunctions: time 0.001105/0.6944, allocations: 0.566 MB / 0.9423 GB, free: 8.539 MB / 0.7325 GB Notification: Performance of NFScalarize.scalarize: time 0.0003517/0.6948, allocations: 402.8 kB / 0.9427 GB, free: 8.145 MB / 0.7325 GB Notification: Performance of NFVerifyModel.verify: time 0.0006024/0.6954, allocations: 0.6857 MB / 0.9434 GB, free: 7.457 MB / 0.7325 GB Notification: Performance of NFConvertDAE.convert: time 0.002183/0.6976, allocations: 1.99 MB / 0.9453 GB, free: 5.461 MB / 0.7325 GB Notification: Performance of FrontEnd - DAE generated: time 8.476e-06/0.6976, allocations: 8 kB / 0.9453 GB, free: 5.453 MB / 0.7325 GB Notification: Performance of FrontEnd: time 1.683e-06/0.6976, allocations: 0 / 0.9453 GB, free: 5.453 MB / 0.7325 GB Notification: Performance of Transformations before backend: time 2.398e-05/0.6976, allocations: 0 / 0.9453 GB, free: 5.453 MB / 0.7325 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 289 * Number of variables: 289 Notification: Performance of Generate backend data structure: time 0.003236/0.7009, allocations: 1.667 MB / 0.9469 GB, free: 3.734 MB / 0.7325 GB Notification: Performance of prepare preOptimizeDAE: time 3.709e-05/0.7009, allocations: 8.031 kB / 0.9469 GB, free: 3.727 MB / 0.7325 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.09866/0.7996, allocations: 15.35 MB / 0.9619 GB, free: 4.348 MB / 0.7481 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.002291/0.8019, allocations: 1.16 MB / 0.9631 GB, free: 3.145 MB / 0.7481 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0001192/0.8021, allocations: 86.28 kB / 0.9632 GB, free: 3.059 MB / 0.7481 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0003936/0.8025, allocations: 116 kB / 0.9633 GB, free: 2.945 MB / 0.7481 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.03263/0.8351, allocations: 7.565 MB / 0.9706 GB, free: 11.3 MB / 0.7637 GB Notification: Performance of preOpt findStateOrder (simulation): time 2.772e-05/0.8352, allocations: 7.938 kB / 0.9707 GB, free: 11.3 MB / 0.7637 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0002892/0.8355, allocations: 51.98 kB / 0.9707 GB, free: 11.25 MB / 0.7637 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 2.616e-05/0.8355, allocations: 31.98 kB / 0.9707 GB, free: 11.21 MB / 0.7637 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.06211/0.8976, allocations: 13.49 MB / 0.9839 GB, free: 13.7 MB / 0.7794 GB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.03793/0.9356, allocations: 8.806 MB / 0.9925 GB, free: 4.816 MB / 0.7794 GB Notification: Performance of preOpt comSubExp (simulation): time 0.03662/0.9722, allocations: 7.79 MB / 1 GB, free: 13.01 MB / 0.795 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.02982/1.002, allocations: 6.162 MB / 1.006 GB, free: 6.84 MB / 0.795 GB Notification: Performance of preOpt evalFunc (simulation): time 0.000589/1.003, allocations: 0.5944 MB / 1.007 GB, free: 6.113 MB / 0.795 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.02993/1.033, allocations: 6.667 MB / 1.013 GB, free: 15.42 MB / 0.8106 GB Notification: Performance of pre-optimization done (n=101): time 7.193e-06/1.033, allocations: 0 / 1.013 GB, free: 15.42 MB / 0.8106 GB Notification: Performance of matching and sorting (n=101): time 0.08744/1.12, allocations: 18.02 MB / 1.031 GB, free: 13.35 MB / 0.8262 GB Notification: Performance of inlineWhenForInitialization (initialization): time 0.0001093/1.12, allocations: 196.9 kB / 1.031 GB, free: 13.11 MB / 0.8262 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0009978/1.121, allocations: 0.6919 MB / 1.032 GB, free: 12.41 MB / 0.8262 GB Notification: Performance of collectPreVariables (initialization): time 0.0004896/1.122, allocations: 49.7 kB / 1.032 GB, free: 12.36 MB / 0.8262 GB Notification: Performance of collectInitialEqns (initialization): time 0.0004074/1.122, allocations: 460.3 kB / 1.032 GB, free: 11.9 MB / 0.8262 GB Notification: Performance of collectInitialBindings (initialization): time 0.0006255/1.123, allocations: 335.2 kB / 1.032 GB, free: 11.57 MB / 0.8262 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.001132/1.124, allocations: 346.1 kB / 1.033 GB, free: 11.22 MB / 0.8262 GB Notification: Performance of setup shared object (initialization): time 0.0001734/1.124, allocations: 398.7 kB / 1.033 GB, free: 10.82 MB / 0.8262 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.02909/1.153, allocations: 6.275 MB / 1.039 GB, free: 4.539 MB / 0.8262 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.02948/1.183, allocations: 6.399 MB / 1.046 GB, free: 14.11 MB / 0.8419 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.05392/1.237, allocations: 10.84 MB / 1.056 GB, free: 3.246 MB / 0.8419 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 9.157e-06/1.237, allocations: 5.344 kB / 1.056 GB, free: 3.242 MB / 0.8419 GB Notification: Performance of matching and sorting (n=125) (initialization): time 0.05887/1.296, allocations: 12.15 MB / 1.068 GB, free: 7.066 MB / 0.8575 GB Notification: Performance of prepare postOptimizeDAE: time 2.281e-05/1.296, allocations: 4 kB / 1.068 GB, free: 7.062 MB / 0.8575 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.085e-05/1.296, allocations: 4 kB / 1.068 GB, free: 7.059 MB / 0.8575 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0005828/1.296, allocations: 84.86 kB / 1.068 GB, free: 6.973 MB / 0.8575 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0169/1.313, allocations: 2.648 MB / 1.071 GB, free: 4.32 MB / 0.8575 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.002198/1.316, allocations: 1.639 MB / 1.072 GB, free: 2.539 MB / 0.8575 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.01597/1.332, allocations: 2.433 MB / 1.075 GB, free: 104 kB / 0.8575 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0006977/1.332, allocations: 103.8 kB / 1.075 GB, free: 0 / 0.8575 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 4 * Number of states: 0 () * Number of discrete variables: 8 (weaDat.conTim.canRepeatWeatherFile,weaDat.conTimMin.canRepeatWeatherFile,weaDat.conTim.tNext,$PRE.weaDat.conTim.tNext,weaDat.conTimMin.tNext,$PRE.weaDat.conTimMin.tNext,$whenCondition1,$whenCondition2) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (123): * Single equations (assignments): 122 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 1 * 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): 1 system {(1,2)} Notification: Performance of prepare postOptimizeDAE: time 0.001547/1.334, allocations: 295.7 kB / 1.075 GB, free: 15.7 MB / 0.8731 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0007797/1.335, allocations: 102.8 kB / 1.075 GB, free: 15.6 MB / 0.8731 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.06109/1.396, allocations: 12.52 MB / 1.087 GB, free: 3.059 MB / 0.8731 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 3.098e-05/1.396, allocations: 12 kB / 1.087 GB, free: 3.047 MB / 0.8731 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 7.324e-06/1.396, allocations: 0 / 1.087 GB, free: 3.047 MB / 0.8731 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 4.09e-05/1.396, allocations: 3.984 kB / 1.087 GB, free: 3.043 MB / 0.8731 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.06504/1.461, allocations: 14.6 MB / 1.102 GB, free: 4.363 MB / 0.8887 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 1.879e-05/1.461, allocations: 7.875 kB / 1.102 GB, free: 4.355 MB / 0.8887 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.01651/1.477, allocations: 2.64 MB / 1.104 GB, free: 1.711 MB / 0.8887 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.000462/1.478, allocations: 76.78 kB / 1.104 GB, free: 1.633 MB / 0.8887 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0005494/1.479, allocations: 87.81 kB / 1.104 GB, free: 1.547 MB / 0.8887 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.001982/1.481, allocations: 1.661 MB / 1.106 GB, free: 15.74 MB / 0.9044 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.744e-06/1.481, allocations: 0 / 1.106 GB, free: 15.74 MB / 0.9044 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.06502/1.546, allocations: 12.01 MB / 1.118 GB, free: 3.699 MB / 0.9044 GB Notification: Performance of postOpt removeConstants (simulation): time 0.002214/1.548, allocations: 0.6512 MB / 1.118 GB, free: 3.027 MB / 0.9044 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0008567/1.549, allocations: 24 kB / 1.118 GB, free: 3.004 MB / 0.9044 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.01767/1.566, allocations: 2.387 MB / 1.121 GB, free: 0.6133 MB / 0.9044 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0002599/1.567, allocations: 84.88 kB / 1.121 GB, free: 0.5312 MB / 0.9044 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0004381/1.567, allocations: 99.81 kB / 1.121 GB, free: 444 kB / 0.9044 GB Notification: Performance of sorting global known variables: time 0.0007568/1.568, allocations: 0.4969 MB / 1.121 GB, free: 15.94 MB / 0.92 GB Notification: Performance of sort global known variables: time 2.3e-07/1.568, allocations: 0 / 1.121 GB, free: 15.94 MB / 0.92 GB Notification: Performance of remove unused functions: time 0.001821/1.57, allocations: 0.6475 MB / 1.122 GB, free: 15.29 MB / 0.92 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 1 * Number of states: 0 () * Number of discrete variables: 4 ($whenCondition2,$whenCondition1,weaDat.conTimMin.tNext,weaDat.conTim.tNext) * Number of discrete states: 2 (weaDat.conTim.tNext,weaDat.conTimMin.tNext) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (121): * Single equations (assignments): 118 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 2 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 1 * 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): 1 system {(1,3)} Notification: Performance of Backend phase and start with SimCode phase: time 0.00158/1.571, allocations: 0.6184 MB / 1.123 GB, free: 14.91 MB / 0.92 GB Notification: Performance of simCode: created initialization part: time 0.05969/1.631, allocations: 12.79 MB / 1.135 GB, free: 2.086 MB / 0.92 GB Notification: Performance of simCode: created event and clocks part: time 5.33e-06/1.631, allocations: 3.938 kB / 1.135 GB, free: 2.082 MB / 0.92 GB Notification: Performance of simCode: created simulation system equations: time 0.3292/1.96, allocations: 6.446 MB / 1.141 GB, free: 311.8 MB / 0.92 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.00167/1.962, allocations: 311.2 kB / 1.142 GB, free: 311.8 MB / 0.92 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.03419/1.996, allocations: 7.889 MB / 1.149 GB, free: 311.1 MB / 0.92 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0006949/1.997, allocations: 1.119 MB / 1.151 GB, free: 310.4 MB / 0.92 GB Notification: Performance of simCode: alias equations: time 0.003267/2, allocations: 0.7167 MB / 1.151 GB, free: 310.2 MB / 0.92 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.00168/2.002, allocations: 241 kB / 1.151 GB, free: 310.2 MB / 0.92 GB Notification: Performance of SimCode: time 8.22e-07/2.002, allocations: 1.25 kB / 1.151 GB, free: 310.2 MB / 0.92 GB Notification: Performance of Templates: time 0.0593/2.061, allocations: 36.31 MB / 1.187 GB, free: 298 MB / 0.92 GB make -j1 -f Buildings_8_Buildings.HeatTransfer.Windows.BaseClasses.Examples.Overhang.makefile (rm -f Buildings_8_Buildings.HeatTransfer.Windows.BaseClasses.Examples.Overhang.pipe ; mkfifo Buildings_8_Buildings.HeatTransfer.Windows.BaseClasses.Examples.Overhang.pipe ; head -c 1048576 < Buildings_8_Buildings.HeatTransfer.Windows.BaseClasses.Examples.Overhang.pipe >> ../files/Buildings_8_Buildings.HeatTransfer.Windows.BaseClasses.Examples.Overhang.sim & ./Buildings_8_Buildings.HeatTransfer.Windows.BaseClasses.Examples.Overhang -abortSlowSimulation -alarm=480 -s cvode -lv LOG_STATS > Buildings_8_Buildings.HeatTransfer.Windows.BaseClasses.Examples.Overhang.pipe 2>&1)