Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Modelica_3.2.1_Modelica.Mechanics.MultiBody.Examples.Rotational3DEffects.GyroscopicEffects.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) 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(Modelica.Mechanics.MultiBody.Examples.Rotational3DEffects.GyroscopicEffects,tolerance=1e-08,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Modelica_3.2.1_Modelica.Mechanics.MultiBody.Examples.Rotational3DEffects.GyroscopicEffects") translateModel(Modelica.Mechanics.MultiBody.Examples.Rotational3DEffects.GyroscopicEffects,tolerance=1e-08,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Modelica_3.2.1_Modelica.Mechanics.MultiBody.Examples.Rotational3DEffects.GyroscopicEffects") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.008511/0.008511, allocations: 102.7 kB / 15.73 MB, free: 6.031 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001912/0.001912, allocations: 190.1 kB / 16.67 MB, free: 5.953 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 1.543/1.543, allocations: 205.1 MB / 222.6 MB, free: 4.527 MB / 174.1 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 0.001369/0.001369, allocations: 50.23 kB / 326.5 MB, free: 14.37 MB / 270.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.1073/0.1087, allocations: 46.63 MB / 373.2 MB, free: 1.316 MB / 302.1 MB Notification: Performance of NFInst.instantiate(Modelica.Mechanics.MultiBody.Examples.Rotational3DEffects.GyroscopicEffects): time 0.01965/0.1284, allocations: 17.58 MB / 390.8 MB, free: 15.65 MB / 334.1 MB Notification: Performance of NFInst.instExpressions: time 0.01467/0.1431, allocations: 5.721 MB / 396.5 MB, free: 9.914 MB / 334.1 MB Notification: Performance of NFInst.updateImplicitVariability: time 0.004799/0.148, allocations: 143.5 kB / 396.6 MB, free: 9.773 MB / 334.1 MB Notification: Performance of NFTyping.typeComponents: time 0.01036/0.1584, allocations: 5.214 MB / 401.8 MB, free: 4.543 MB / 334.1 MB Notification: Performance of NFTyping.typeBindings: time 0.009095/0.1675, allocations: 3.147 MB / 405 MB, free: 1.383 MB / 334.1 MB Notification: Performance of NFTyping.typeClassSections: time 0.003418/0.171, allocations: 1.42 MB / 406.4 MB, free: 15.96 MB / 350.1 MB Notification: Performance of NFFlatten.flatten: time 0.0145/0.1855, allocations: 10.07 MB / 416.5 MB, free: 5.863 MB / 350.1 MB Notification: Performance of NFFlatten.resolveConnections: time 0.007646/0.1932, allocations: 6.172 MB / 422.6 MB, free: 15.61 MB / 366.1 MB Notification: Performance of NFEvalConstants.evaluate: time 0.00545/0.1987, allocations: 3.084 MB / 425.7 MB, free: 12.52 MB / 366.1 MB Notification: Performance of NFSimplifyModel.simplify: time 0.007797/0.2066, allocations: 4.066 MB / 429.8 MB, free: 8.441 MB / 366.1 MB Notification: Performance of NFPackage.collectConstants: time 0.002336/0.2089, allocations: 0.582 MB / 430.4 MB, free: 7.859 MB / 366.1 MB Notification: Performance of NFFlatten.collectFunctions: time 0.005303/0.2142, allocations: 1.884 MB / 432.3 MB, free: 5.973 MB / 366.1 MB Notification: Performance of NFScalarize.scalarize: time 0.006141/0.2204, allocations: 3.791 MB / 436.1 MB, free: 2.172 MB / 366.1 MB Notification: Performance of NFVerifyModel.verify: time 0.006957/0.2274, allocations: 4.012 MB / 440.1 MB, free: 14.14 MB / 382.1 MB Notification: Performance of NFConvertDAE.convert: time 0.01465/0.2421, allocations: 12.39 MB / 452.5 MB, free: 1.703 MB / 382.1 MB Notification: Performance of FrontEnd - DAE generated: time 6.533e-06/0.2421, allocations: 0 / 452.5 MB, free: 1.703 MB / 382.1 MB Notification: Performance of FrontEnd: time 1.854e-06/0.2421, allocations: 0 / 452.5 MB, free: 1.703 MB / 382.1 MB Notification: Performance of Transformations before backend: time 0.0004326/0.2425, allocations: 0 / 452.5 MB, free: 1.703 MB / 382.1 MB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 2276 * Number of variables: 2276 Notification: Performance of Generate backend data structure: time 0.3062/0.5488, allocations: 9.513 MB / 462 MB, free: 65.91 MB / 382.1 MB Notification: Performance of prepare preOptimizeDAE: time 5.845e-05/0.5488, allocations: 12.86 kB / 462 MB, free: 65.91 MB / 382.1 MB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.03615/0.585, allocations: 8.712 MB / 470.7 MB, free: 61.91 MB / 382.1 MB Notification: Performance of preOpt evaluateParameters (simulation): time 0.02231/0.6074, allocations: 7.401 MB / 478.1 MB, free: 56.5 MB / 382.1 MB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0004379/0.6079, allocations: 379.5 kB / 478.5 MB, free: 56.18 MB / 382.1 MB Notification: Performance of preOpt expandDerOperator (simulation): time 0.003716/0.6116, allocations: 0.6863 MB / 479.2 MB, free: 55.55 MB / 382.1 MB Notification: Performance of preOpt clockPartitioning (simulation): time 0.04142/0.653, allocations: 17.16 MB / 496.3 MB, free: 37.39 MB / 382.1 MB Notification: Performance of preOpt findStateOrder (simulation): time 0.0005881/0.6537, allocations: 87.23 kB / 496.4 MB, free: 37.3 MB / 382.1 MB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.002746/0.6565, allocations: 239.8 kB / 496.6 MB, free: 37.07 MB / 382.1 MB Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.004411/0.6609, allocations: 2.778 MB / 499.4 MB, free: 34.28 MB / 382.1 MB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.03483/0.6957, allocations: 14.95 MB / 0.5023 GB, free: 19.29 MB / 382.1 MB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.1046/0.8004, allocations: 68.08 MB / 0.5688 GB, free: 13.48 MB / 446.1 MB Notification: Performance of preOpt comSubExp (simulation): time 0.03005/0.8305, allocations: 9.228 MB / 0.5778 GB, free: 4.082 MB / 446.1 MB Notification: Performance of preOpt resolveLoops (simulation): time 0.007067/0.8376, allocations: 4.751 MB / 0.5824 GB, free: 15.32 MB / 462.1 MB Notification: Performance of preOpt evalFunc (simulation): time 0.001911/0.8396, allocations: 1.034 MB / 0.5835 GB, free: 14.12 MB / 462.1 MB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 8.703e-05/0.8397, allocations: 72.44 kB / 0.5835 GB, free: 14.04 MB / 462.1 MB Notification: Performance of pre-optimization done (n=268): time 9.759e-06/0.8397, allocations: 0 / 0.5835 GB, free: 14.04 MB / 462.1 MB Notification: Performance of matching and sorting (n=351): time 0.7106/1.55, allocations: 59.86 MB / 0.642 GB, free: 157.1 MB / 494.1 MB Notification: Performance of inlineWhenForInitialization (initialization): time 0.002237/1.553, allocations: 3.412 MB / 0.6453 GB, free: 153.8 MB / 494.1 MB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.01459/1.567, allocations: 7.51 MB / 0.6526 GB, free: 151.2 MB / 494.1 MB Notification: Performance of collectPreVariables (initialization): time 0.001464/1.569, allocations: 79.94 kB / 0.6527 GB, free: 151.1 MB / 494.1 MB Notification: Performance of collectInitialEqns (initialization): time 0.003983/1.573, allocations: 5.033 MB / 0.6576 GB, free: 147.2 MB / 494.1 MB Notification: Performance of collectInitialBindings (initialization): time 0.002315/1.575, allocations: 1.344 MB / 0.659 GB, free: 146.3 MB / 494.1 MB Notification: Performance of simplifyInitialFunctions (initialization): time 0.003047/1.578, allocations: 2.175 MB / 0.6611 GB, free: 145.3 MB / 494.1 MB Notification: Performance of setup shared object (initialization): time 5.614e-05/1.578, allocations: 312.9 kB / 0.6614 GB, free: 145 MB / 494.1 MB Notification: Performance of preBalanceInitialSystem (initialization): time 0.006848/1.585, allocations: 5.518 MB / 0.6668 GB, free: 143.1 MB / 494.1 MB Notification: Performance of partitionIndependentBlocks (initialization): time 0.009345/1.594, allocations: 10.84 MB / 0.6774 GB, free: 133.9 MB / 494.1 MB Notification: Performance of analyzeInitialSystem (initialization): time 0.01586/1.61, allocations: 17.24 MB / 0.6942 GB, free: 114.5 MB / 494.1 MB Notification: Performance of solveInitialSystemEqSystem (initialization): time 0.0001631/1.61, allocations: 52 kB / 0.6942 GB, free: 114.5 MB / 494.1 MB Notification: Performance of matching and sorting (n=1334) (initialization): time 0.06971/1.68, allocations: 34.84 MB / 0.7283 GB, free: 79.59 MB / 494.1 MB Notification: Performance of prepare postOptimizeDAE: time 9.761e-05/1.68, allocations: 84 kB / 0.7283 GB, free: 79.51 MB / 494.1 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 0.04822/1.729, allocations: 23.69 MB / 0.7515 GB, free: 55.77 MB / 494.1 MB Notification: Performance of postOpt tearingSystem (initialization): time 0.0451/1.774, allocations: 17.85 MB / 0.7689 GB, free: 37.88 MB / 494.1 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.00861/1.782, allocations: 2.398 MB / 0.7712 GB, free: 35.48 MB / 494.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.3805/2.163, allocations: 41.46 MB / 0.8117 GB, free: 155.8 MB / 0.4982 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.01245/2.175, allocations: 0.8138 MB / 0.8125 GB, free: 155.8 MB / 0.4982 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.002984/2.178, allocations: 0.6108 MB / 0.8131 GB, free: 155.8 MB / 0.4982 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 833 * Number of states: 0 () * Number of discrete variables: 63 (rotor1D.cylinderColor[3],rotor1D.cylinderColor[2],rotor1D.cylinderColor[1],bodyCylinder4.color[3],bodyCylinder4.color[2],bodyCylinder4.color[1],bodyCylinder4.body.sphereColor[3],bodyCylinder4.body.sphereColor[2],bodyCylinder4.body.sphereColor[1],fixedTranslation1.color[3],fixedTranslation1.color[2],fixedTranslation1.color[1],fixedRotation2.color[3],fixedRotation2.color[2],fixedRotation2.color[1],bodyCylinder3.color[3],bodyCylinder3.color[2],bodyCylinder3.color[1],bodyCylinder3.body.sphereColor[3],bodyCylinder3.body.sphereColor[2],bodyCylinder3.body.sphereColor[1],spherical2.sphereColor[3],spherical2.sphereColor[2],spherical2.sphereColor[1],fixed.color[3],fixed.color[2],fixed.color[1],bodyCylinder2.color[3],bodyCylinder2.color[2],bodyCylinder2.color[1],bodyCylinder2.body.sphereColor[3],bodyCylinder2.body.sphereColor[2],bodyCylinder2.body.sphereColor[1],fixedTranslation.color[3],fixedTranslation.color[2],fixedTranslation.color[1],revolute.cylinderColor[3],revolute.cylinderColor[2],revolute.cylinderColor[1],fixedRotation1.color[3],fixedRotation1.color[2],fixedRotation1.color[1],bodyCylinder1.color[3],bodyCylinder1.color[2],bodyCylinder1.color[1],bodyCylinder1.body.sphereColor[3],bodyCylinder1.body.sphereColor[2],bodyCylinder1.body.sphereColor[1],spherical1.sphereColor[3],spherical1.sphereColor[2],spherical1.sphereColor[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 (1168): * Single equations (assignments): 1151 * Array equations: 11 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 2 * Torn equation systems: 4 * Mixed (continuous/discrete) equation systems: 0 Notification: Equation system details (not torn): * Constant Jacobian (size): 0 systems * Linear Jacobian (size,density): 2 systems {(4,100.0%), (4,100.0%)} * 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 {(6,39,91.7%), (3,38,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 2 systems {(4,9), (4,9)} Notification: Performance of prepare postOptimizeDAE: time 0.008727/2.187, allocations: 3.437 MB / 0.8165 GB, free: 155.6 MB / 0.4982 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.002317/2.19, allocations: 0.6606 MB / 0.8171 GB, free: 155.6 MB / 0.4982 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.02281/2.212, allocations: 12.87 MB / 0.8297 GB, free: 152.8 MB / 0.4982 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 0.01945/2.232, allocations: 11.55 MB / 0.841 GB, free: 149.3 MB / 0.4982 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 4.363e-05/2.232, allocations: 21.52 kB / 0.841 GB, free: 149.3 MB / 0.4982 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 6.645e-05/2.232, allocations: 18.16 kB / 0.841 GB, free: 149.3 MB / 0.4982 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.04839/2.28, allocations: 27.02 MB / 0.8674 GB, free: 130.9 MB / 0.4982 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 4.986e-05/2.281, allocations: 4 kB / 0.8674 GB, free: 130.9 MB / 0.4982 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.004181/2.285, allocations: 0.7527 MB / 0.8681 GB, free: 130.2 MB / 0.4982 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.01567/2.3, allocations: 5.318 MB / 0.8733 GB, free: 124.9 MB / 0.4982 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.001092/2.302, allocations: 135.8 kB / 0.8735 GB, free: 124.8 MB / 0.4982 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.0313/2.333, allocations: 28.34 MB / 0.9011 GB, free: 96.01 MB / 0.4982 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 0.002036/2.335, allocations: 3.142 MB / 0.9042 GB, free: 92.61 MB / 0.4982 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.03203/2.367, allocations: 19.02 MB / 0.9228 GB, free: 73.82 MB / 0.4982 GB Notification: Performance of postOpt removeConstants (simulation): time 0.006457/2.374, allocations: 1.494 MB / 0.9242 GB, free: 72.55 MB / 0.4982 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.003437/2.377, allocations: 80.98 kB / 0.9243 GB, free: 72.48 MB / 0.4982 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.006365/2.383, allocations: 355.6 kB / 0.9246 GB, free: 72.13 MB / 0.4982 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.001712/2.385, allocations: 286.6 kB / 0.9249 GB, free: 71.86 MB / 0.4982 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.001/2.386, allocations: 143.9 kB / 0.9251 GB, free: 71.71 MB / 0.4982 GB Notification: Performance of sorting global known variables: time 0.009438/2.396, allocations: 4.774 MB / 0.9297 GB, free: 66.98 MB / 0.4982 GB Notification: Performance of sort global known variables: time 4.51e-07/2.396, allocations: 0 / 0.9297 GB, free: 66.98 MB / 0.4982 GB Notification: Performance of remove unused functions: time 0.0138/2.409, allocations: 2.28 MB / 0.9319 GB, free: 64.7 MB / 0.4982 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 11 * Number of states: 16 ($STATESET2.x[3],$STATESET2.x[2],$STATESET2.x[1],bodyCylinder1.body.w_a[1],bodyCylinder1.body.w_a[2],bodyCylinder1.body.w_a[3],revolute.phi,revolute.w,$STATESET1.x[3],$STATESET1.x[2],$STATESET1.x[1],rotor1D.phi,rotor1D.w,rotor1D.rotorWith3DEffects.w_a[1],rotor1D.rotorWith3DEffects.w_a[2],rotor1D.rotorWith3DEffects.w_a[3]) * 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 (245): * Single equations (assignments): 235 * Array equations: 3 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 4 * Torn equation systems: 3 * Mixed (continuous/discrete) equation systems: 0 Notification: Equation system details (not torn): * Constant Jacobian (size): 0 systems * Linear Jacobian (size,density): 2 systems {(4,100.0%), (4,100.0%)} * Non-linear Jacobian (size): 2 systems {4, 4} * Without analytic Jacobian (size): 0 systems Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 3 systems {(6,33,91.7%), (3,33,100.0%), (1,1,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 0 systems Notification: Performance of Backend phase and start with SimCode phase: time 0.001355/2.411, allocations: 234.8 kB / 0.9322 GB, free: 64.47 MB / 0.4982 GB Notification: Performance of simCode: created initialization part: time 0.01936/2.43, allocations: 14.1 MB / 0.9459 GB, free: 50.31 MB / 0.4982 GB Notification: Performance of simCode: created event and clocks part: time 9.508e-06/2.43, allocations: 4.125 kB / 0.9459 GB, free: 50.3 MB / 0.4982 GB Notification: Performance of simCode: created simulation system equations: time 0.007541/2.438, allocations: 5.938 MB / 0.9517 GB, free: 44.26 MB / 0.4982 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.006754/2.445, allocations: 0.977 MB / 0.9527 GB, free: 43.3 MB / 0.4982 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.03071/2.475, allocations: 19.8 MB / 0.972 GB, free: 23.43 MB / 0.4982 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.00606/2.481, allocations: 5.35 MB / 0.9773 GB, free: 18.04 MB / 0.4982 GB Notification: Performance of simCode: alias equations: time 0.006925/2.488, allocations: 3.205 MB / 0.9804 GB, free: 14.83 MB / 0.4982 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.002002/2.49, allocations: 0.5576 MB / 0.9809 GB, free: 14.27 MB / 0.4982 GB Notification: Performance of SimCode: time 1.012e-06/2.49, allocations: 0 / 0.9809 GB, free: 14.27 MB / 0.4982 GB Notification: Performance of Templates: time 0.3921/2.883, allocations: 115.8 MB / 1.094 GB, free: 97.79 MB / 0.5138 GB make -j1 -f Modelica_3.2.1_Modelica.Mechanics.MultiBody.Examples.Rotational3DEffects.GyroscopicEffects.makefile (rm -f Modelica_3.2.1_Modelica.Mechanics.MultiBody.Examples.Rotational3DEffects.GyroscopicEffects.pipe ; mkfifo Modelica_3.2.1_Modelica.Mechanics.MultiBody.Examples.Rotational3DEffects.GyroscopicEffects.pipe ; head -c 1048576 < Modelica_3.2.1_Modelica.Mechanics.MultiBody.Examples.Rotational3DEffects.GyroscopicEffects.pipe >> ../files/Modelica_3.2.1_Modelica.Mechanics.MultiBody.Examples.Rotational3DEffects.GyroscopicEffects.sim & ./Modelica_3.2.1_Modelica.Mechanics.MultiBody.Examples.Rotational3DEffects.GyroscopicEffects -abortSlowSimulation -alarm=480 -lv LOG_STATS > Modelica_3.2.1_Modelica.Mechanics.MultiBody.Examples.Rotational3DEffects.GyroscopicEffects.pipe 2>&1)