Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr ModelicaTest_4.1.0-beta.om_ModelicaTest.MultiBody.Sensors.CutForceAndTorque1.conf.json loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices trunk/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex trunk/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica trunk/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaTest 4.1.0-beta.om/package.mo", uses=false) Using package ModelicaTest with version 4.1.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaTest 4.1.0-beta.om/package.mo) Using package Modelica with version trunk (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica trunk/package.mo) Using package Complex with version trunk (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex trunk/package.mo) Using package ModelicaServices with version trunk (/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices trunk/package.mo) Running command: "" <> buildModelFMU(ModelicaTest.MultiBody.Sensors.CutForceAndTorque1,fileNamePrefix="ModelicaTest_4_1_0-beta_om_ModelicaTest_MultiBody_Sensors_CutForceAndTorque1",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(ModelicaTest.MultiBody.Sensors.CutForceAndTorque1,fileNamePrefix="ModelicaTest_4_1_0-beta_om_ModelicaTest_MultiBody_Sensors_CutForceAndTorque1",fmuType="me",version="2.0",platforms={"static"}) Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices trunk/package.mo): time 0.001342/0.001342, allocations: 103.9 kB / 17.63 MB, free: 5.523 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex trunk/package.mo): time 0.001411/0.001411, allocations: 210.4 kB / 18.58 MB, free: 4.578 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica trunk/package.mo): time 1.46/1.46, allocations: 227.4 MB / 246.8 MB, free: 10.59 MB / 206.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaTest 4.1.0-beta.om/package.mo): time 0.2529/0.2529, allocations: 46.11 MB / 344.2 MB, free: 11.59 MB / 286.1 MB Warning: Requested package Modelica of version 4.1.0, but this package was already loaded with version trunk. OpenModelica cannot reason about compatibility between the two packages since they are not semantic versions. Notification: Performance of FrontEnd - loaded program: time 0.00248/0.00248, allocations: 72.78 kB / 417.8 MB, free: 19.65 MB / 302.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.1194/0.1219, allocations: 62.45 MB / 480.2 MB, free: 5.168 MB / 350.1 MB Notification: Performance of NFInst.instantiate(ModelicaTest.MultiBody.Sensors.CutForceAndTorque1): time 0.01994/0.1419, allocations: 16.28 MB / 496.5 MB, free: 4.816 MB / 366.1 MB Notification: Performance of NFInst.instExpressions: time 0.01191/0.1538, allocations: 5.388 MB / 0.4901 GB, free: 15.41 MB / 382.1 MB Notification: Performance of NFInst.updateImplicitVariability: time 0.002628/0.1565, allocations: 127.6 kB / 0.4902 GB, free: 15.29 MB / 382.1 MB Notification: Performance of NFTyping.typeComponents: time 0.01449/0.171, allocations: 7.454 MB / 0.4975 GB, free: 7.809 MB / 382.1 MB Notification: Performance of NFTyping.typeBindings: time 0.009191/0.1803, allocations: 2.921 MB / 0.5004 GB, free: 4.879 MB / 382.1 MB Notification: Performance of NFTyping.typeClassSections: time 0.00517/0.1855, allocations: 1.708 MB / 0.502 GB, free: 3.168 MB / 382.1 MB Notification: Performance of NFFlatten.flatten: time 0.2284/0.4139, allocations: 8.401 MB / 0.5102 GB, free: 11.72 MB / 382.1 MB Notification: Performance of NFFlatten.resolveConnections: time 0.01258/0.4266, allocations: 8.907 MB / 0.5189 GB, free: 10.52 MB / 382.1 MB Notification: Performance of NFEvalConstants.evaluate: time 0.007789/0.4344, allocations: 3.393 MB / 0.5222 GB, free: 10.29 MB / 382.1 MB Notification: Performance of NFSimplifyModel.simplify: time 0.007791/0.4422, allocations: 4.358 MB / 0.5265 GB, free: 9.434 MB / 382.1 MB Notification: Performance of NFPackage.collectConstants: time 0.003045/0.4453, allocations: 0.7069 MB / 0.5272 GB, free: 9.43 MB / 382.1 MB Notification: Performance of NFFlatten.collectFunctions: time 0.004602/0.4499, allocations: 1.521 MB / 0.5287 GB, free: 9.277 MB / 382.1 MB Notification: Performance of NFScalarize.scalarize: time 0.005842/0.4558, allocations: 4.015 MB / 0.5326 GB, free: 7.867 MB / 382.1 MB Notification: Performance of NFVerifyModel.verify: time 0.007353/0.4632, allocations: 4.484 MB / 0.537 GB, free: 4.742 MB / 382.1 MB Notification: Performance of NFConvertDAE.convert: time 0.01674/0.48, allocations: 13.21 MB / 0.5499 GB, free: 10.56 MB / 398.1 MB Notification: Performance of FrontEnd - DAE generated: time 8.777e-06/0.48, allocations: 4 kB / 0.5499 GB, free: 10.56 MB / 398.1 MB Notification: Performance of FrontEnd: time 1.603e-06/0.48, allocations: 0 / 0.5499 GB, free: 10.56 MB / 398.1 MB Notification: Performance of Transformations before backend: time 0.0005216/0.4806, allocations: 0 / 0.5499 GB, free: 10.56 MB / 398.1 MB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 2873 * Number of variables: 2873 Notification: Performance of Generate backend data structure: time 0.0263/0.5069, allocations: 9.61 MB / 0.5593 GB, free: 1.039 MB / 398.1 MB Notification: Performance of prepare preOptimizeDAE: time 5.487e-05/0.507, allocations: 8.031 kB / 0.5593 GB, free: 1.031 MB / 398.1 MB Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.004941/0.5119, allocations: 1.368 MB / 0.5606 GB, free: 15.71 MB / 414.1 MB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0134/0.5254, allocations: 2.636 MB / 0.5632 GB, free: 13.07 MB / 414.1 MB Notification: Performance of preOpt evaluateParameters (simulation): time 0.01384/0.5393, allocations: 5.705 MB / 0.5688 GB, free: 7.633 MB / 414.1 MB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0006865/0.54, allocations: 0.4953 MB / 0.5692 GB, free: 7.195 MB / 414.1 MB Notification: Performance of preOpt expandDerOperator (simulation): time 0.002749/0.5428, allocations: 0.6486 MB / 0.5699 GB, free: 6.609 MB / 414.1 MB Notification: Performance of preOpt clockPartitioning (simulation): time 0.04605/0.5888, allocations: 19.6 MB / 0.589 GB, free: 2.156 MB / 430.1 MB Notification: Performance of preOpt findStateOrder (simulation): time 0.0005083/0.5894, allocations: 74.2 kB / 0.5891 GB, free: 2.117 MB / 430.1 MB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.002798/0.5922, allocations: 310 kB / 0.5894 GB, free: 1.875 MB / 430.1 MB Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.005498/0.5977, allocations: 3.306 MB / 0.5926 GB, free: 14.61 MB / 446.1 MB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.03762/0.6354, allocations: 15 MB / 0.6073 GB, free: 15.9 MB / 462.1 MB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.1204/0.7558, allocations: 71.53 MB / 0.6771 GB, free: 7.543 MB / 0.5137 GB Notification: Performance of preOpt comSubExp (simulation): time 0.02074/0.7766, allocations: 6.392 MB / 0.6833 GB, free: 1.008 MB / 0.5137 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.004113/0.7808, allocations: 2.363 MB / 0.6857 GB, free: 14.64 MB / 0.5294 GB Notification: Performance of preOpt evalFunc (simulation): time 0.02302/0.8038, allocations: 10.8 MB / 0.6962 GB, free: 3.438 MB / 0.5294 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 7.632e-05/0.8039, allocations: 59.62 kB / 0.6963 GB, free: 3.371 MB / 0.5294 GB Notification: Performance of pre-optimization done (n=212): time 5.912e-06/0.804, allocations: 0 / 0.6963 GB, free: 3.371 MB / 0.5294 GB Notification: Performance of matching and sorting (n=236): time 0.05078/0.8547, allocations: 16.47 MB / 0.7123 GB, free: 2.918 MB / 0.545 GB Notification: Performance of inlineWhenForInitialization (initialization): time 0.000111/0.8549, allocations: 157.5 kB / 0.7125 GB, free: 2.734 MB / 0.545 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.43/1.285, allocations: 6.652 MB / 0.719 GB, free: 186.1 MB / 0.545 GB Notification: Performance of collectPreVariables (initialization): time 0.000397/1.285, allocations: 61.27 kB / 0.719 GB, free: 186 MB / 0.545 GB Notification: Performance of collectInitialEqns (initialization): time 0.004927/1.29, allocations: 5.654 MB / 0.7246 GB, free: 182.6 MB / 0.545 GB Notification: Performance of collectInitialBindings (initialization): time 0.001242/1.292, allocations: 0.9275 MB / 0.7255 GB, free: 181.9 MB / 0.545 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.002561/1.294, allocations: 1.801 MB / 0.7272 GB, free: 181.1 MB / 0.545 GB Notification: Performance of setup shared object (initialization): time 5.643e-05/1.294, allocations: 301.8 kB / 0.7275 GB, free: 180.8 MB / 0.545 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.004567/1.299, allocations: 2.506 MB / 0.73 GB, free: 180 MB / 0.545 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.007674/1.306, allocations: 8.198 MB / 0.738 GB, free: 171.6 MB / 0.545 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0138/1.32, allocations: 11.68 MB / 0.7494 GB, free: 161 MB / 0.545 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 0.0003423/1.321, allocations: 59 kB / 0.7494 GB, free: 161 MB / 0.545 GB Notification: Performance of matching and sorting (n=1177) (initialization): time 0.01785/1.339, allocations: 10.33 MB / 0.7595 GB, free: 157.1 MB / 0.545 GB Notification: Performance of prepare postOptimizeDAE: time 0.000114/1.339, allocations: 96.28 kB / 0.7596 GB, free: 157.1 MB / 0.545 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 0.0001902/1.339, allocations: 202.8 kB / 0.7598 GB, free: 157.1 MB / 0.545 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0001883/1.339, allocations: 265.9 kB / 0.7601 GB, free: 157.1 MB / 0.545 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.005525/1.345, allocations: 2.051 MB / 0.7621 GB, free: 156.8 MB / 0.545 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.0002323/1.345, allocations: 397.5 kB / 0.7624 GB, free: 156.7 MB / 0.545 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.005986/1.351, allocations: 436.2 kB / 0.7629 GB, free: 156.6 MB / 0.545 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0007346/1.352, allocations: 0.5474 MB / 0.7634 GB, free: 156.5 MB / 0.545 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 923 * Number of states: 0 () * Number of discrete variables: 88 (cutForce2b.torqueArrow.twoHeadedArrow,cutForce2b.torqueArrow.headAtOrigin,cutForce2b.forceArrow.twoHeadedArrow,cutForce2b.forceArrow.headAtOrigin,cutForce2a.torqueArrow.twoHeadedArrow,cutForce2a.torqueArrow.headAtOrigin,cutForce2a.forceArrow.twoHeadedArrow,cutForce2a.forceArrow.headAtOrigin,cutForce1b.torqueArrow.twoHeadedArrow,cutForce1b.torqueArrow.headAtOrigin,cutForce1b.forceArrow.twoHeadedArrow,cutForce1b.forceArrow.headAtOrigin,cutForce1a.torqueArrow.twoHeadedArrow,cutForce1a.torqueArrow.headAtOrigin,cutForce1a.forceArrow.twoHeadedArrow,cutForce1a.forceArrow.headAtOrigin,body2b.sphereColor[3],body2b.sphereColor[2],body2b.sphereColor[1],body2a.sphereColor[3],body2a.sphereColor[2],body2a.sphereColor[1],body1b.sphereColor[3],body1b.sphereColor[2],body1b.sphereColor[1],body1a.sphereColor[3],body1a.sphereColor[2],body1a.sphereColor[1],rotate2b.color[3],rotate2b.color[2],rotate2b.color[1],rotate2a.color[3],rotate2a.color[2],rotate2a.color[1],rotate1b.color[3],rotate1b.color[2],rotate1b.color[1],rotate1a.color[3],rotate1a.color[2],rotate1a.color[1],translate2b.color[3],translate2b.color[2],translate2b.color[1],translate2a.color[3],translate2a.color[2],translate2a.color[1],translate1b.color[3],translate1b.color[2],translate1b.color[1],translate1a.color[3],translate1a.color[2],translate1a.color[1],cutForce2b.torqueColor[3],cutForce2b.torqueColor[2],cutForce2b.torqueColor[1],cutForce2b.forceColor[3],cutForce2b.forceColor[2],cutForce2b.forceColor[1],cutForce2a.torqueColor[3],cutForce2a.torqueColor[2],cutForce2a.torqueColor[1],cutForce2a.forceColor[3],cutForce2a.forceColor[2],cutForce2a.forceColor[1],cutForce1b.torqueColor[3],cutForce1b.torqueColor[2],cutForce1b.torqueColor[1],cutForce1b.forceColor[3],cutForce1b.forceColor[2],cutForce1b.forceColor[1],cutForce1a.torqueColor[3],cutForce1a.torqueColor[2],cutForce1a.torqueColor[1],cutForce1a.forceColor[3],cutForce1a.forceColor[2],cutForce1a.forceColor[1],world.gravityArrowColor[3],world.gravityArrowColor[2],world.gravityArrowColor[1],world.axisColor_x[3],world.axisColor_x[2],world.axisColor_x[1],world.groundColor[3],world.groundColor[2],world.groundColor[1],world.gravitySphereColor[3],world.gravitySphereColor[2],world.gravitySphereColor[1]) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (1113): * Single equations (assignments): 1102 * Array equations: 11 * Algorithm blocks: 0 * 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 0.005137/1.357, allocations: 3.731 MB / 0.767 GB, free: 154.8 MB / 0.545 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.000944/1.358, allocations: 0.5602 MB / 0.7676 GB, free: 154.5 MB / 0.545 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.00105/1.359, allocations: 0.6837 MB / 0.7683 GB, free: 154.2 MB / 0.545 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 2.854e-05/1.359, allocations: 31.97 kB / 0.7683 GB, free: 154.2 MB / 0.545 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 1.033e-05/1.359, allocations: 3.094 kB / 0.7683 GB, free: 154.2 MB / 0.545 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 1.475e-05/1.359, allocations: 11.39 kB / 0.7683 GB, free: 154.2 MB / 0.545 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.03266/1.392, allocations: 21.94 MB / 0.7897 GB, free: 134.3 MB / 0.545 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 0.0001309/1.392, allocations: 49 kB / 0.7898 GB, free: 134.2 MB / 0.545 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.001506/1.393, allocations: 462.6 kB / 0.7902 GB, free: 133.8 MB / 0.545 GB Notification: Performance of postOpt tearingSystem (simulation): time 4.451e-05/1.393, allocations: 67.98 kB / 0.7903 GB, free: 133.7 MB / 0.545 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0002296/1.394, allocations: 99.98 kB / 0.7904 GB, free: 133.6 MB / 0.545 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 4.219e-05/1.394, allocations: 87.66 kB / 0.7905 GB, free: 133.5 MB / 0.545 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 2.724e-05/1.394, allocations: 75.62 kB / 0.7905 GB, free: 133.5 MB / 0.545 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.004417/1.398, allocations: 4.624 MB / 0.795 GB, free: 128.1 MB / 0.545 GB Notification: Performance of postOpt removeConstants (simulation): time 0.001655/1.4, allocations: 0.6497 MB / 0.7957 GB, free: 127.5 MB / 0.545 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.001396/1.401, allocations: 108 kB / 0.7958 GB, free: 127.4 MB / 0.545 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.002853/1.404, allocations: 133.7 kB / 0.7959 GB, free: 127.2 MB / 0.545 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0003088/1.404, allocations: 318.5 kB / 0.7962 GB, free: 126.9 MB / 0.545 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0001618/1.404, allocations: 132 kB / 0.7963 GB, free: 126.8 MB / 0.545 GB Notification: Performance of sorting global known variables: time 0.00575/1.41, allocations: 4.136 MB / 0.8004 GB, free: 122.7 MB / 0.545 GB Notification: Performance of sort global known variables: time 4.51e-07/1.41, allocations: 4 kB / 0.8004 GB, free: 122.7 MB / 0.545 GB Notification: Performance of remove unused functions: time 0.008107/1.418, allocations: 1.458 MB / 0.8018 GB, free: 121.2 MB / 0.545 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 209 * Number of states: 0 () * Number of discrete variables: 0 () * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (236): * Single equations (assignments): 233 * Array equations: 3 * Algorithm blocks: 0 * 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 Backend phase and start with SimCode phase: time 0.004943/1.423, allocations: 5.346 MB / 0.807 GB, free: 115.2 MB / 0.545 GB Notification: Performance of simCode: created initialization part: time 0.008587/1.432, allocations: 6.011 MB / 0.8129 GB, free: 109.2 MB / 0.545 GB Notification: Performance of simCode: created event and clocks part: time 3.619e-05/1.432, allocations: 8 kB / 0.8129 GB, free: 109.2 MB / 0.545 GB Notification: Performance of simCode: created simulation system equations: time 0.001658/1.434, allocations: 1.346 MB / 0.8142 GB, free: 107.9 MB / 0.545 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.005723/1.439, allocations: 0.9724 MB / 0.8152 GB, free: 107 MB / 0.545 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.1071/1.547, allocations: 86.67 MB / 0.8998 GB, free: 6.496 MB / 0.545 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.00932/1.556, allocations: 5.708 MB / 0.9054 GB, free: 0.75 MB / 0.545 GB Notification: Performance of simCode: alias equations: time 0.008566/1.565, allocations: 2.701 MB / 0.908 GB, free: 14.04 MB / 0.5607 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.007334/1.572, allocations: 3.78 MB / 0.9117 GB, free: 10.25 MB / 0.5607 GB Notification: Performance of SimCode: time 8.11e-07/1.572, allocations: 0 / 0.9117 GB, free: 10.25 MB / 0.5607 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.4299/2.002, allocations: 105.3 MB / 1.015 GB, free: 122.9 MB / 0.5607 GB Notification: Performance of buildModelFMU: Generate platform static: time 11.09/13.1, allocations: 4.688 kB / 1.015 GB, free: 122.9 MB / 0.5607 GB (rm -f ModelicaTest_4.1.0-beta.om_ModelicaTest.MultiBody.Sensors.CutForceAndTorque1.pipe ; mkfifo ModelicaTest_4.1.0-beta.om_ModelicaTest.MultiBody.Sensors.CutForceAndTorque1.pipe ; head -c 1048576 < ModelicaTest_4.1.0-beta.om_ModelicaTest.MultiBody.Sensors.CutForceAndTorque1.pipe >> ../files/ModelicaTest_4.1.0-beta.om_ModelicaTest.MultiBody.Sensors.CutForceAndTorque1.sim & /home/hudson/saved_omc/OMSimulator/install/bin/OMSimulator -r=ModelicaTest_4.1.0-beta.om_ModelicaTest.MultiBody.Sensors.CutForceAndTorque1_res.mat --tempDir=temp_ModelicaTest_4_1_0-beta_om_ModelicaTest_MultiBody_Sensors_CutForceAndTorque1_fmu --startTime=0 --stopTime=1.1 --timeout=50 --tolerance=1e-06 ModelicaTest_4_1_0-beta_om_ModelicaTest_MultiBody_Sensors_CutForceAndTorque1.fmu > ModelicaTest_4.1.0-beta.om_ModelicaTest.MultiBody.Sensors.CutForceAndTorque1.pipe 2>&1)