Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr OpenHydraulics_OpenHydraulics.Circuits.OpenCenter_tandem.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/OpenHydraulics 1.0.0-master/package.mo", uses=false) Using package OpenHydraulics with version 1.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/OpenHydraulics 1.0.0-master/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(OpenHydraulics.Circuits.OpenCenter_tandem,tolerance=1e-08,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="OpenHydraulics_OpenHydraulics.Circuits.OpenCenter_tandem") translateModel(OpenHydraulics.Circuits.OpenCenter_tandem,tolerance=1e-08,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="OpenHydraulics_OpenHydraulics.Circuits.OpenCenter_tandem") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001713/0.001713, allocations: 116.1 kB / 16.42 MB, free: 6.496 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001995/0.001994, allocations: 187.9 kB / 17.35 MB, free: 5.762 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 1.703/1.703, allocations: 205.1 MB / 223.2 MB, free: 12.23 MB / 190.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/OpenHydraulics 1.0.0-master/package.mo): time 0.05852/0.05852, allocations: 11.84 MB / 282.4 MB, free: 220 kB / 222.1 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: OpenHydraulics requested package Modelica of version 3.2. Modelica 3.2.3 is used instead which states that it is fully compatible without conversion script needed. Notification: Performance of FrontEnd - loaded program: time 0.001674/0.001674, allocations: 68.83 kB / 393 MB, free: 45.38 MB / 318.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.1062/0.1079, allocations: 49.23 MB / 442.2 MB, free: 2.098 MB / 318.1 MB Notification: Performance of NFInst.instantiate(OpenHydraulics.Circuits.OpenCenter_tandem): time 0.02258/0.1305, allocations: 23.26 MB / 465.5 MB, free: 10.75 MB / 350.1 MB Notification: Performance of NFInst.instExpressions: time 0.01901/0.1495, allocations: 9.318 MB / 474.8 MB, free: 1.406 MB / 350.1 MB Notification: Performance of NFInst.updateImplicitVariability: time 0.005864/0.1554, allocations: 87.62 kB / 474.9 MB, free: 1.32 MB / 350.1 MB Notification: Performance of NFTyping.typeComponents: time 0.004797/0.1604, allocations: 1.666 MB / 476.6 MB, free: 15.64 MB / 366.1 MB [/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 0.01114/0.1715, allocations: 3.239 MB / 479.8 MB, free: 12.38 MB / 366.1 MB Notification: Performance of NFTyping.typeClassSections: time 0.009894/0.1814, allocations: 3.538 MB / 483.3 MB, free: 8.879 MB / 366.1 MB Notification: Performance of NFFlatten.flatten: time 0.01482/0.1963, allocations: 10.07 MB / 493.4 MB, free: 14.77 MB / 382.1 MB Notification: Performance of NFFlatten.resolveConnections: time 0.005755/0.2021, allocations: 2.87 MB / 496.3 MB, free: 11.82 MB / 382.1 MB Notification: Performance of NFEvalConstants.evaluate: time 0.006681/0.2088, allocations: 3.468 MB / 499.7 MB, free: 8.34 MB / 382.1 MB Notification: Performance of NFSimplifyModel.simplify: time 0.007108/0.2159, allocations: 3.933 MB / 0.4919 GB, free: 4.391 MB / 382.1 MB Notification: Performance of NFPackage.collectConstants: time 0.002767/0.2187, allocations: 0.7227 MB / 0.4926 GB, free: 3.668 MB / 382.1 MB Notification: Performance of NFFlatten.collectFunctions: time 0.003976/0.2227, allocations: 0.992 MB / 0.4935 GB, free: 2.676 MB / 382.1 MB Notification: Performance of NFScalarize.scalarize: time 0.003072/0.2258, allocations: 1.931 MB / 0.4954 GB, free: 0.7383 MB / 382.1 MB Notification: Performance of NFVerifyModel.verify: time 0.007931/0.2337, allocations: 4.027 MB / 0.4994 GB, free: 12.69 MB / 398.1 MB Notification: Performance of NFConvertDAE.convert: time 0.01608/0.2498, allocations: 10.38 MB / 0.5095 GB, free: 2.285 MB / 398.1 MB Notification: Performance of FrontEnd - DAE generated: time 9.659e-06/0.2499, allocations: 3.984 kB / 0.5095 GB, free: 2.281 MB / 398.1 MB Notification: Performance of FrontEnd: time 1.653e-06/0.2499, allocations: 4 kB / 0.5095 GB, free: 2.277 MB / 398.1 MB Notification: Performance of Transformations before backend: time 0.000446/0.2504, allocations: 0 / 0.5095 GB, free: 2.277 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: 1226 * Number of variables: 1226 Notification: Performance of Generate backend data structure: time 0.02127/0.2717, allocations: 7.681 MB / 0.517 GB, free: 10.41 MB / 414.1 MB Notification: Performance of prepare preOptimizeDAE: time 5.656e-05/0.2717, allocations: 11.89 kB / 0.517 GB, free: 10.4 MB / 414.1 MB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.003245/0.275, allocations: 0.7885 MB / 0.5178 GB, free: 9.602 MB / 414.1 MB Notification: Performance of preOpt evaluateParameters (simulation): time 0.0105/0.2855, allocations: 4.168 MB / 0.5219 GB, free: 5.359 MB / 414.1 MB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0008266/0.2864, allocations: 0.5891 MB / 0.5224 GB, free: 4.719 MB / 414.1 MB Notification: Performance of preOpt expandDerOperator (simulation): time 0.002033/0.2884, allocations: 491.8 kB / 0.5229 GB, free: 4.238 MB / 414.1 MB Notification: Performance of preOpt clockPartitioning (simulation): time 0.2918/0.5803, allocations: 5.594 MB / 0.5284 GB, free: 78.75 MB / 414.1 MB Notification: Performance of preOpt findStateOrder (simulation): time 0.0002313/0.5806, allocations: 10.3 kB / 0.5284 GB, free: 78.75 MB / 414.1 MB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0007211/0.5813, allocations: 199.9 kB / 0.5286 GB, free: 78.75 MB / 414.1 MB Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.0001205/0.5814, allocations: 115.1 kB / 0.5287 GB, free: 78.75 MB / 414.1 MB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.01299/0.5944, allocations: 5.142 MB / 0.5337 GB, free: 77.07 MB / 414.1 MB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.04773/0.6422, allocations: 28.98 MB / 0.562 GB, free: 52.35 MB / 414.1 MB Notification: Performance of preOpt comSubExp (simulation): time 0.008946/0.6512, allocations: 5.476 MB / 0.5673 GB, free: 48.86 MB / 414.1 MB Notification: Performance of preOpt resolveLoops (simulation): time 0.004899/0.6562, allocations: 2.222 MB / 0.5695 GB, free: 47.71 MB / 414.1 MB Notification: Performance of preOpt evalFunc (simulation): time 0.0005108/0.6567, allocations: 196.3 kB / 0.5697 GB, free: 47.59 MB / 414.1 MB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.005413/0.6621, allocations: 2.448 MB / 0.5721 GB, free: 46.05 MB / 414.1 MB Notification: Performance of pre-optimization done (n=449): time 1.106e-05/0.6622, allocations: 0 / 0.5721 GB, free: 46.05 MB / 414.1 MB Notification: Performance of matching and sorting (n=501): time 0.05164/0.7138, allocations: 20.05 MB / 0.5917 GB, free: 27.41 MB / 414.1 MB Notification: Performance of inlineWhenForInitialization (initialization): time 0.0001558/0.714, allocations: 0.5181 MB / 0.5922 GB, free: 26.78 MB / 414.1 MB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.01124/0.7253, allocations: 5.799 MB / 0.5978 GB, free: 20.96 MB / 414.1 MB Notification: Performance of collectPreVariables (initialization): time 0.00115/0.7265, allocations: 117.7 kB / 0.598 GB, free: 20.84 MB / 414.1 MB Notification: Performance of collectInitialEqns (initialization): time 0.002866/0.7294, allocations: 2.689 MB / 0.6006 GB, free: 18.14 MB / 414.1 MB Notification: Performance of collectInitialBindings (initialization): time 0.002352/0.7317, allocations: 1.668 MB / 0.6022 GB, free: 16.49 MB / 414.1 MB Notification: Performance of simplifyInitialFunctions (initialization): time 0.003186/0.735, allocations: 0.8363 MB / 0.603 GB, free: 15.64 MB / 414.1 MB Notification: Performance of setup shared object (initialization): time 5.934e-05/0.735, allocations: 301.1 kB / 0.6033 GB, free: 15.34 MB / 414.1 MB Notification: Performance of preBalanceInitialSystem (initialization): time 0.004596/0.7396, allocations: 1.908 MB / 0.6052 GB, free: 13.42 MB / 414.1 MB Notification: Performance of partitionIndependentBlocks (initialization): time 0.004688/0.7444, allocations: 2.505 MB / 0.6076 GB, free: 10.64 MB / 414.1 MB Notification: Performance of analyzeInitialSystem (initialization): time 0.03369/0.7781, allocations: 11.44 MB / 0.6188 GB, free: 14.46 MB / 430.1 MB Notification: Performance of solveInitialSystemEqSystem (initialization): time 3.042e-05/0.7781, allocations: 4 kB / 0.6188 GB, free: 14.46 MB / 430.1 MB Notification: Performance of matching and sorting (n=620) (initialization): time 0.01667/0.7948, allocations: 6.454 MB / 0.6251 GB, free: 7.703 MB / 430.1 MB Notification: Performance of prepare postOptimizeDAE: time 0.0002697/0.7951, allocations: 425.5 kB / 0.6255 GB, free: 7.195 MB / 430.1 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 5.868e-05/0.7952, allocations: 16 kB / 0.6255 GB, free: 7.18 MB / 430.1 MB Notification: Performance of postOpt tearingSystem (initialization): time 0.001032/0.7963, allocations: 458.4 kB / 0.626 GB, free: 6.711 MB / 430.1 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.005392/0.8017, allocations: 1.053 MB / 0.627 GB, free: 5.656 MB / 430.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.01364/0.8153, allocations: 14.5 MB / 0.6412 GB, free: 6.066 MB / 446.1 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.005591/0.821, allocations: 195.7 kB / 0.6413 GB, free: 5.875 MB / 446.1 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.001367/0.8224, allocations: 208 kB / 0.6415 GB, free: 5.672 MB / 446.1 MB Warning: Assuming fixed start value for the following 17 variables: constantSpeed.phi:VARIABLE(unit = "rad" fixed = true ) "Angle of flange with respect to support (= flange.phi - support.phi)" type: Real reliefValve.valvePosition:VARIABLE(start = 0.0 fixed = true ) "Normalized valve position (between 0 and 1)" type: Real doubleActingCylinder.cushionHead.reliefValve.valvePosition:VARIABLE(start = 0.0 fixed = true ) "Normalized valve position (between 0 and 1)" type: Real doubleActingCylinder.cushionRod.reliefValve.valvePosition:VARIABLE(start = 0.0 fixed = true ) "Normalized valve position (between 0 and 1)" type: Real doubleActingCylinder.damper.v_rel:VARIABLE(start = 0.0 unit = "m/s" fixed = true stateSelect=StateSelect.prefer ) "Relative velocity (= der(s_rel))" type: Real doubleActingCylinder.leakage_Head2Env.port_b.p:VARIABLE(flow=false min = 0.0 start = doubleActingCylinder.cushionHead.reliefValve.variableRestriction.p_init unit = "Pa" fixed = true nominal = 1e5 stateSelect=StateSelect.prefer ) "Pressure in the connection point" type: Real doubleActingCylinder.leakage_Rod2Env.port_b.p:VARIABLE(flow=false min = 0.0 start = doubleActingCylinder.cushionRod.reliefValve.variableRestriction.p_init unit = "Pa" fixed = true nominal = 1e5 stateSelect=StateSelect.prefer ) "Pressure in the connection point" type: Real doubleActingCylinder1.cushionHead.reliefValve.valvePosition:VARIABLE(start = 0.0 fixed = true ) "Normalized valve position (between 0 and 1)" type: Real doubleActingCylinder1.cushionRod.reliefValve.valvePosition:VARIABLE(start = 0.0 fixed = true ) "Normalized valve position (between 0 and 1)" type: Real doubleActingCylinder1.damper.v_rel:VARIABLE(start = 0.0 unit = "m/s" fixed = true stateSelect=StateSelect.prefer ) "Relative velocity (= der(s_rel))" type: Real doubleActingCylinder1.leakage_Head2Env.port_b.p:VARIABLE(flow=false min = 0.0 start = doubleActingCylinder1.cushionHead.reliefValve.variableRestriction.p_init unit = "Pa" fixed = true nominal = 1e5 stateSelect=StateSelect.prefer ) "Pressure in the connection point" type: Real doubleActingCylinder1.leakage_Rod2Env.port_b.p:VARIABLE(flow=false min = 0.0 start = doubleActingCylinder1.cushionRod.reliefValve.variableRestriction.p_init unit = "Pa" fixed = true nominal = 1e5 stateSelect=StateSelect.prefer ) "Pressure in the connection point" type: Real valve4_3posOCtandem1.P2T.port_a.p:VARIABLE(flow=false min = 0.0 start = constantDisplacementPump.fluidPower2MechRot.p_init unit = "Pa" fixed = true nominal = 1e5 stateSelect=StateSelect.prefer ) "Pressure in the connection point" type: Real doubleActingCylinder1.cushionRod.flowFraction:VARIABLE(fixed = true protected = true ) "fraction of flow allowed by cushion" type: Real doubleActingCylinder1.cushionHead.flowFraction:VARIABLE(fixed = true protected = true ) "fraction of flow allowed by cushion" type: Real doubleActingCylinder.cushionRod.flowFraction:VARIABLE(fixed = true protected = true ) "fraction of flow allowed by cushion" type: Real doubleActingCylinder.cushionHead.flowFraction:VARIABLE(fixed = true protected = true ) "fraction of flow allowed by cushion" type: Real Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 80 * Number of states: 0 () * Number of discrete variables: 39 (valve4_3posOCtandem1.P2T.data.zetaLaminarKnown,valve4_3posOCtandem1.A2T.data.zetaLaminarKnown,valve4_3posOCtandem1.P2B.data.zetaLaminarKnown,valve4_3posOCtandem1.B2T.data.zetaLaminarKnown,valve4_3posOCtandem1.P2A.data.zetaLaminarKnown,doubleActingCylinder1.cushionRod.reliefValve.variableRestriction.data.zetaLaminarKnown,doubleActingCylinder1.cushionRod.cushionRestriction.data.zetaLaminarKnown,doubleActingCylinder1.cushionHead.reliefValve.variableRestriction.data.zetaLaminarKnown,doubleActingCylinder1.cushionHead.cushionRestriction.data.zetaLaminarKnown,valve4_3posOCtandem.P2T.data.zetaLaminarKnown,valve4_3posOCtandem.A2T.data.zetaLaminarKnown,valve4_3posOCtandem.P2B.data.zetaLaminarKnown,valve4_3posOCtandem.B2T.data.zetaLaminarKnown,valve4_3posOCtandem.P2A.data.zetaLaminarKnown,doubleActingCylinder.cushionRod.reliefValve.variableRestriction.data.zetaLaminarKnown,doubleActingCylinder.cushionRod.cushionRestriction.data.zetaLaminarKnown,doubleActingCylinder.cushionHead.reliefValve.variableRestriction.data.zetaLaminarKnown,doubleActingCylinder.cushionHead.cushionRestriction.data.zetaLaminarKnown,reliefValve.variableRestriction.data.zetaLaminarKnown,constantDisplacementPump.mechanicalPumpLosses.free,doubleActingCylinder1.cylinderChamberRod.empty,doubleActingCylinder1.cylinderChamberHead.empty,constantDisplacementPump.mechanicalPumpLosses.mode,$PRE.constantDisplacementPump.mechanicalPumpLosses.mode,constantDisplacementPump.mechanicalPumpLosses.locked,constantDisplacementPump.mechanicalPumpLosses.startBackward,$PRE.constantDisplacementPump.mechanicalPumpLosses.startBackward,constantDisplacementPump.mechanicalPumpLosses.startForward,$PRE.constantDisplacementPump.mechanicalPumpLosses.startForward,doubleActingCylinder.cylinderChamberRod.empty,doubleActingCylinder.cylinderChamberHead.empty,$whenCondition8,$whenCondition7,$whenCondition6,$whenCondition5,$whenCondition1,$whenCondition2,$whenCondition3,$whenCondition4) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (586): * Single equations (assignments): 563 * Array equations: 0 * Algorithm blocks: 15 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 8 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 7 systems {(1,6,100.0%), (1,7,100.0%), (1,3,100.0%), (1,3,100.0%), (1,6,100.0%), (1,3,100.0%), (1,3,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 1 system {(1,3)} Notification: Performance of prepare postOptimizeDAE: time 0.005767/0.8282, allocations: 2.05 MB / 0.6435 GB, free: 3.539 MB / 446.1 MB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.002522/0.8307, allocations: 0.6208 MB / 0.6441 GB, free: 2.914 MB / 446.1 MB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.01805/0.8488, allocations: 6.628 MB / 0.6506 GB, free: 11.98 MB / 462.1 MB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.0001275/0.849, allocations: 31.83 kB / 0.6506 GB, free: 11.95 MB / 462.1 MB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 1.695e-05/0.849, allocations: 3.984 kB / 0.6507 GB, free: 11.94 MB / 462.1 MB Notification: Performance of postOpt removeConstants (simulation): time 0.004508/0.8535, allocations: 1.239 MB / 0.6519 GB, free: 10.68 MB / 462.1 MB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.002409/0.8559, allocations: 115.9 kB / 0.652 GB, free: 10.56 MB / 462.1 MB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.004261/0.8602, allocations: 191.9 kB / 0.6522 GB, free: 10.38 MB / 462.1 MB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.001233/0.8615, allocations: 391.8 kB / 0.6525 GB, free: 9.988 MB / 462.1 MB Notification: Performance of postOpt createDAEmodeBDAE (simulation): time 0.01732/0.8788, allocations: 6.738 MB / 0.6591 GB, free: 2.961 MB / 462.1 MB Notification: Performance of postOpt symbolicJacobianDAE (simulation): time 0.01889/0.8978, allocations: 8.39 MB / 0.6673 GB, free: 10.33 MB / 478.1 MB Notification: Performance of postOpt setEvaluationStage (simulation): time 0.004849/0.9027, allocations: 2.357 MB / 0.6696 GB, free: 7.941 MB / 478.1 MB Notification: Performance of sorting global known variables: time 0.008892/0.9116, allocations: 3.997 MB / 0.6735 GB, free: 3.945 MB / 478.1 MB Notification: Performance of Backend: time 1.714e-06/0.9116, allocations: 0 / 0.6735 GB, free: 3.945 MB / 478.1 MB Notification: Performance of simCode: created initialization part: time 0.01555/0.9272, allocations: 5.481 MB / 0.6789 GB, free: 14.34 MB / 494.1 MB Notification: Invalid unit expression 'N/ (m/s)'. Notification: Performance of SimCode: time 0.03289/0.9601, allocations: 13.81 MB / 0.6923 GB, free: 328 kB / 494.1 MB Notification: Performance of Templates: time 0.4014/1.362, allocations: 91.42 MB / 0.7816 GB, free: 141.7 MB / 0.5137 GB make -j1 -f OpenHydraulics_OpenHydraulics.Circuits.OpenCenter_tandem.makefile (rm -f OpenHydraulics_OpenHydraulics.Circuits.OpenCenter_tandem.pipe ; mkfifo OpenHydraulics_OpenHydraulics.Circuits.OpenCenter_tandem.pipe ; head -c 1048576 < OpenHydraulics_OpenHydraulics.Circuits.OpenCenter_tandem.pipe >> ../files/OpenHydraulics_OpenHydraulics.Circuits.OpenCenter_tandem.sim & ./OpenHydraulics_OpenHydraulics.Circuits.OpenCenter_tandem -abortSlowSimulation -alarm=480 -lv LOG_STATS > OpenHydraulics_OpenHydraulics.Circuits.OpenCenter_tandem.pipe 2>&1)