Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr PhotoVoltaics_TGM_PhotoVoltaics_TGM.TGM_Trina_Analytical_20160808.conf.json loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/PhotoVoltaics 2.0.0/package.mo", uses=false) 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/PhotoVoltaics_TGM 2.0.0/package.mo", uses=false) Using package PhotoVoltaics_TGM with version 2.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/PhotoVoltaics_TGM 2.0.0/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) Using package PhotoVoltaics with version 2.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/PhotoVoltaics 2.0.0/package.mo) Running command: "" <> buildModelFMU(PhotoVoltaics_TGM.TGM_Trina_Analytical_20160808,fileNamePrefix="PhotoVoltaics_TGM_PhotoVoltaics_TGM_TGM_Trina_Analytical_20160808",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(PhotoVoltaics_TGM.TGM_Trina_Analytical_20160808,fileNamePrefix="PhotoVoltaics_TGM_PhotoVoltaics_TGM_TGM_Trina_Analytical_20160808",fmuType="me",version="2.0",platforms={"static"}) Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/PhotoVoltaics 2.0.0/package.mo): time 0.02725/0.02725, allocations: 5.393 MB / 20.89 MB, free: 1.359 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.005828/0.005828, allocations: 100.6 kB / 22.88 MB, free: 0.7656 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001081/0.001081, allocations: 185.9 kB / 24.99 MB, free: 140 kB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.252/1.252, allocations: 222.9 MB / 249.9 MB, free: 8.48 MB / 206.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/PhotoVoltaics_TGM 2.0.0/package.mo): time 0.009053/0.009053, allocations: 2.312 MB / 303.5 MB, free: 6.543 MB / 238.1 MB Warning: Ignoring unknown experiment annotation option: __Dymola_Algorithm = "Rkfix4" Notification: Performance of FrontEnd - loaded program: time 0.001698/0.001698, allocations: 99.84 kB / 367.3 MB, free: 6.762 MB / 302.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.1638/0.1655, allocations: 51.21 MB / 418.5 MB, free: 26.39 MB / 302.1 MB Notification: Performance of NFInst.instantiate(PhotoVoltaics_TGM.TGM_Trina_Analytical_20160808): time 0.00549/0.1711, allocations: 6.753 MB / 425.2 MB, free: 19.61 MB / 302.1 MB Notification: Performance of NFInst.instExpressions: time 0.003599/0.1747, allocations: 3.138 MB / 428.4 MB, free: 16.46 MB / 302.1 MB Notification: Performance of NFInst.updateImplicitVariability: time 0.0004805/0.1752, allocations: 19.94 kB / 428.4 MB, free: 16.44 MB / 302.1 MB Notification: Performance of NFTyping.typeComponents: time 0.001912/0.1771, allocations: 1.103 MB / 429.5 MB, free: 15.34 MB / 302.1 MB Notification: Performance of NFTyping.typeBindings: time 0.001307/0.1784, allocations: 0.8389 MB / 430.3 MB, free: 14.49 MB / 302.1 MB Notification: Performance of NFTyping.typeClassSections: time 0.001148/0.1796, allocations: 0.5357 MB / 430.9 MB, free: 13.96 MB / 302.1 MB Notification: Performance of NFFlatten.flatten: time 0.0007887/0.1804, allocations: 1.371 MB / 432.2 MB, free: 12.59 MB / 302.1 MB Notification: Performance of NFFlatten.resolveConnections: time 0.0009633/0.1813, allocations: 1.032 MB / 433.3 MB, free: 11.53 MB / 302.1 MB Notification: Performance of NFEvalConstants.evaluate: time 0.0003758/0.1817, allocations: 0.5605 MB / 433.8 MB, free: 10.96 MB / 302.1 MB Notification: Performance of NFSimplifyModel.simplify: time 0.0005407/0.1823, allocations: 0.7082 MB / 434.5 MB, free: 10.25 MB / 302.1 MB Notification: Performance of NFPackage.collectConstants: time 0.0001354/0.1824, allocations: 144 kB / 434.7 MB, free: 10.11 MB / 302.1 MB Notification: Performance of NFFlatten.collectFunctions: time 0.0005697/0.183, allocations: 439.7 kB / 435.1 MB, free: 9.684 MB / 302.1 MB Notification: Performance of NFScalarize.scalarize: time 0.0001346/0.1831, allocations: 294.9 kB / 435.4 MB, free: 9.395 MB / 302.1 MB Notification: Performance of NFVerifyModel.verify: time 0.0003426/0.1835, allocations: 0.6298 MB / 436 MB, free: 8.762 MB / 302.1 MB Notification: Performance of NFConvertDAE.convert: time 0.001057/0.1846, allocations: 1.721 MB / 437.8 MB, free: 7.035 MB / 302.1 MB Notification: Performance of FrontEnd - DAE generated: time 3.467e-06/0.1846, allocations: 0 / 437.8 MB, free: 7.035 MB / 302.1 MB Notification: Performance of FrontEnd: time 1.142e-06/0.1846, allocations: 0 / 437.8 MB, free: 7.035 MB / 302.1 MB Notification: Performance of Transformations before backend: time 1.139e-05/0.1846, allocations: 4 kB / 437.8 MB, free: 7.031 MB / 302.1 MB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 270 * Number of variables: 270 Notification: Performance of Generate backend data structure: time 0.003321/0.1879, allocations: 1.769 MB / 439.5 MB, free: 5.191 MB / 302.1 MB Notification: Performance of prepare preOptimizeDAE: time 3.22e-05/0.188, allocations: 12.03 kB / 439.5 MB, free: 5.18 MB / 302.1 MB Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.0001409/0.1881, allocations: 168.8 kB / 439.7 MB, free: 5.004 MB / 302.1 MB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.001937/0.19, allocations: 367.2 kB / 440.1 MB, free: 4.645 MB / 302.1 MB Notification: Performance of preOpt evaluateParameters (simulation): time 0.00132/0.1914, allocations: 0.756 MB / 440.8 MB, free: 3.844 MB / 302.1 MB Notification: Performance of preOpt simplifyIfEquations (simulation): time 4.872e-05/0.1914, allocations: 78.06 kB / 440.9 MB, free: 3.766 MB / 302.1 MB Notification: Performance of preOpt expandDerOperator (simulation): time 0.000128/0.1916, allocations: 111.9 kB / 441 MB, free: 3.656 MB / 302.1 MB Notification: Performance of preOpt clockPartitioning (simulation): time 0.001629/0.1932, allocations: 1.176 MB / 442.2 MB, free: 2.422 MB / 302.1 MB Notification: Performance of preOpt findStateOrder (simulation): time 2.501e-05/0.1932, allocations: 3.938 kB / 442.2 MB, free: 2.418 MB / 302.1 MB Notification: Performance of preOpt replaceEdgeChange (simulation): time 9.243e-05/0.1933, allocations: 51.98 kB / 442.2 MB, free: 2.367 MB / 302.1 MB Notification: Performance of preOpt inlineArrayEqn (simulation): time 1.407e-05/0.1934, allocations: 24 kB / 442.3 MB, free: 2.344 MB / 302.1 MB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.00178/0.1951, allocations: 1.038 MB / 443.3 MB, free: 1.305 MB / 302.1 MB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.005468/0.2006, allocations: 4.407 MB / 447.7 MB, free: 12.7 MB / 318.1 MB Notification: Performance of preOpt comSubExp (simulation): time 0.002795/0.2034, allocations: 1.772 MB / 449.5 MB, free: 10.71 MB / 318.1 MB Notification: Performance of preOpt resolveLoops (simulation): time 0.0007289/0.2042, allocations: 362.1 kB / 449.8 MB, free: 10.36 MB / 318.1 MB Notification: Performance of preOpt evalFunc (simulation): time 0.0001425/0.2043, allocations: 170.8 kB / 450 MB, free: 10.16 MB / 318.1 MB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.0008904/0.2052, allocations: 0.5591 MB / 450.6 MB, free: 9.559 MB / 318.1 MB Notification: Performance of pre-optimization done (n=79): time 2.074e-06/0.2053, allocations: 0 / 450.6 MB, free: 9.559 MB / 318.1 MB Notification: Performance of matching and sorting (n=79): time 0.005792/0.211, allocations: 1.702 MB / 452.3 MB, free: 7.809 MB / 318.1 MB Notification: Performance of inlineWhenForInitialization (initialization): time 0.0001177/0.2112, allocations: 285.7 kB / 452.5 MB, free: 7.469 MB / 318.1 MB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0006047/0.2118, allocations: 0.5536 MB / 453.1 MB, free: 6.906 MB / 318.1 MB Notification: Performance of collectPreVariables (initialization): time 5.326e-05/0.2119, allocations: 41.7 kB / 453.1 MB, free: 6.859 MB / 318.1 MB Notification: Performance of collectInitialEqns (initialization): time 0.0002888/0.2121, allocations: 490.7 kB / 453.6 MB, free: 6.371 MB / 318.1 MB Notification: Performance of collectInitialBindings (initialization): time 0.0001878/0.2123, allocations: 256.4 kB / 453.9 MB, free: 6.117 MB / 318.1 MB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0002913/0.2126, allocations: 210.7 kB / 454.1 MB, free: 5.902 MB / 318.1 MB Notification: Performance of setup shared object (initialization): time 0.0001469/0.2128, allocations: 386.8 kB / 454.4 MB, free: 5.516 MB / 318.1 MB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0007198/0.2135, allocations: 326.4 kB / 454.8 MB, free: 5.199 MB / 318.1 MB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0008614/0.2144, allocations: 0.5682 MB / 455.3 MB, free: 4.535 MB / 318.1 MB Notification: It was not possible to check the given initialization system for consistency symbolically, because the relevant equations are part of an algebraic loop. This is not supported yet. Notification: Performance of analyzeInitialSystem (initialization): time 0.01678/0.2312, allocations: 3.634 MB / 459 MB, free: 0.7344 MB / 318.1 MB Notification: Performance of solveInitialSystemEqSystem (initialization): time 8.666e-06/0.2312, allocations: 3.938 kB / 459 MB, free: 0.7305 MB / 318.1 MB Notification: Performance of matching and sorting (n=133) (initialization): time 0.002417/0.2336, allocations: 1.209 MB / 460.2 MB, free: 15.49 MB / 334.1 MB Notification: Performance of prepare postOptimizeDAE: time 5.99e-05/0.2337, allocations: 91.92 kB / 460.3 MB, free: 15.38 MB / 334.1 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.143e-05/0.2337, allocations: 8 kB / 460.3 MB, free: 15.38 MB / 334.1 MB Notification: Performance of postOpt tearingSystem (initialization): time 0.0004281/0.2342, allocations: 85.03 kB / 460.4 MB, free: 15.29 MB / 334.1 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001063/0.2352, allocations: 255.5 kB / 460.6 MB, free: 15.04 MB / 334.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.001364/0.2366, allocations: 1.582 MB / 462.2 MB, free: 13.31 MB / 334.1 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0008398/0.2375, allocations: 115 kB / 462.3 MB, free: 13.2 MB / 334.1 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 7.662e-05/0.2376, allocations: 51.97 kB / 462.3 MB, free: 13.15 MB / 334.1 MB Warning: The initial conditions are over specified. The following 1 initial equations are redundant, so they are removed from the initialization system: $PRE.irradiance.daysOfYear = PhotoVoltaics.Functions.dayOfTheYear(31, 12, irradiance.startYear). Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 32 * Number of states: 0 () * Number of discrete variables: 27 (writeCSV.firstTrigger,$PRE.writeCSV.firstTrigger,irradiance.year,$PRE.irradiance.year,mpTracker.signv,$PRE.mpTracker.signv,mpTracker.firstTrigger,$PRE.mpTracker.firstTrigger,mpTracker.counter,$PRE.mpTracker.counter,writeCSV.sampleTrigger,$whenCondition4,mpTracker.sampleTrigger,$whenCondition1,irradiance.localDays,irradiance.daysOfYear,$PRE.irradiance.daysOfYear,irradiance.dayOfYear,$PRE.irradiance.dayOfYear,irradiance.startDayOfYear,$PRE.irradiance.startDayOfYear,mpTracker.vRef,$PRE.mpTracker.vRef,$whenCondition3,$whenCondition2,integrator.local_reset,converter.integrator.local_reset) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (129): * Single equations (assignments): 125 * Array equations: 0 * Algorithm blocks: 3 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 1 * Torn equation systems: 0 * Mixed (continuous/discrete) equation systems: 0 Notification: Equation system details (not torn): * Constant Jacobian (size): 0 systems * Linear Jacobian (size,density): 0 systems * Non-linear Jacobian (size): 1 system {2} * Without analytic Jacobian (size): 0 systems Notification: Performance of prepare postOptimizeDAE: time 0.0004888/0.238, allocations: 387.9 kB / 462.7 MB, free: 12.74 MB / 334.1 MB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0001437/0.2382, allocations: 83 kB / 462.8 MB, free: 12.66 MB / 334.1 MB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.00248/0.2407, allocations: 1.257 MB / 464.1 MB, free: 11.37 MB / 334.1 MB Notification: Performance of postOpt inlineArrayEqn (simulation): time 8.496e-06/0.2407, allocations: 8 kB / 464.1 MB, free: 11.36 MB / 334.1 MB Notification: Performance of postOpt constantLinearSystem (simulation): time 2.434e-06/0.2407, allocations: 0 / 464.1 MB, free: 11.36 MB / 334.1 MB Notification: Performance of postOpt simplifysemiLinear (simulation): time 1.019e-05/0.2407, allocations: 3.984 kB / 464.1 MB, free: 11.36 MB / 334.1 MB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.006195/0.2469, allocations: 2.555 MB / 466.6 MB, free: 8.715 MB / 334.1 MB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 4.599e-06/0.2469, allocations: 4.031 kB / 466.6 MB, free: 8.711 MB / 334.1 MB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0005741/0.2475, allocations: 135.8 kB / 466.8 MB, free: 8.578 MB / 334.1 MB Notification: Performance of postOpt tearingSystem (simulation): time 0.0007591/0.2483, allocations: 326.2 kB / 467.1 MB, free: 8.25 MB / 334.1 MB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 6.387e-05/0.2484, allocations: 35.97 kB / 467.1 MB, free: 8.215 MB / 334.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.001218/0.2496, allocations: 0.8896 MB / 468 MB, free: 7.293 MB / 334.1 MB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.803e-06/0.2496, allocations: 0 / 468 MB, free: 7.293 MB / 334.1 MB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.005466/0.2551, allocations: 1.923 MB / 469.9 MB, free: 5.324 MB / 334.1 MB Notification: Performance of postOpt removeConstants (simulation): time 0.0002972/0.2554, allocations: 235.8 kB / 470.2 MB, free: 5.074 MB / 334.1 MB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.000132/0.2555, allocations: 28 kB / 470.2 MB, free: 5.047 MB / 334.1 MB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0006477/0.2562, allocations: 55.95 kB / 470.2 MB, free: 4.992 MB / 334.1 MB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001209/0.2563, allocations: 56.52 kB / 470.3 MB, free: 4.938 MB / 334.1 MB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 6.344e-05/0.2564, allocations: 39.97 kB / 470.3 MB, free: 4.898 MB / 334.1 MB Notification: Performance of sorting global known variables: time 0.0004301/0.2568, allocations: 394.8 kB / 470.7 MB, free: 4.512 MB / 334.1 MB Notification: Performance of sort global known variables: time 1.71e-07/0.2568, allocations: 4 kB / 470.7 MB, free: 4.508 MB / 334.1 MB Notification: Performance of remove unused functions: time 0.000873/0.2577, allocations: 343 kB / 471.1 MB, free: 4.172 MB / 334.1 MB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 3 * Number of states: 3 (converter.integrator.y,integrator.y,voltageSource.pin_p.reference.gamma) * Number of discrete variables: 16 ($whenCondition1,$whenCondition2,$whenCondition3,$whenCondition4,mpTracker.firstTrigger,mpTracker.sampleTrigger,mpTracker.counter,mpTracker.signv,mpTracker.vRef,irradiance.startDayOfYear,irradiance.dayOfYear,irradiance.daysOfYear,irradiance.year,irradiance.localDays,writeCSV.sampleTrigger,writeCSV.firstTrigger) * Number of discrete states: 16 (irradiance.daysOfYear,irradiance.year,irradiance.startDayOfYear,$whenCondition3,irradiance.dayOfYear,$whenCondition2,mpTracker.signv,mpTracker.vRef,mpTracker.firstTrigger,mpTracker.counter,$whenCondition1,mpTracker.sampleTrigger,mpTracker.power,writeCSV.firstTrigger,$whenCondition4,writeCSV.sampleTrigger) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (80): * Single equations (assignments): 77 * Array equations: 0 * Algorithm blocks: 2 * 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 {(1,4)} Notification: Performance of Backend phase and start with SimCode phase: time 0.006193/0.2639, allocations: 2.718 MB / 473.8 MB, free: 1.473 MB / 334.1 MB Notification: Performance of simCode: created initialization part: time 0.002411/0.2663, allocations: 1.193 MB / 475 MB, free: 232 kB / 334.1 MB Notification: Performance of simCode: created event and clocks part: time 2.364e-06/0.2664, allocations: 3.938 kB / 475 MB, free: 228 kB / 334.1 MB Notification: Performance of simCode: created simulation system equations: time 0.001001/0.2674, allocations: 0.663 MB / 475.6 MB, free: 15.52 MB / 350.1 MB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.0007224/0.2681, allocations: 134.2 kB / 475.8 MB, free: 15.39 MB / 350.1 MB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.01039/0.2785, allocations: 7.363 MB / 483.1 MB, free: 7.711 MB / 350.1 MB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.000508/0.279, allocations: 1.014 MB / 484.2 MB, free: 6.664 MB / 350.1 MB Notification: Performance of simCode: alias equations: time 0.000497/0.2795, allocations: 122.4 kB / 484.3 MB, free: 6.539 MB / 350.1 MB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0004939/0.28, allocations: 411.2 kB / 484.7 MB, free: 6.137 MB / 350.1 MB Notification: Performance of SimCode: time 3.51e-07/0.28, allocations: 0 / 484.7 MB, free: 6.137 MB / 350.1 MB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.04112/0.3212, allocations: 20.49 MB / 0.4933 GB, free: 1.852 MB / 366.1 MB Notification: Performance of buildModelFMU: Generate platform static: time 10.38/10.71, allocations: 8.062 kB / 0.4933 GB, free: 1.844 MB / 366.1 MB (rm -f PhotoVoltaics_TGM_PhotoVoltaics_TGM.TGM_Trina_Analytical_20160808.pipe ; mkfifo PhotoVoltaics_TGM_PhotoVoltaics_TGM.TGM_Trina_Analytical_20160808.pipe ; head -c 1048576 < PhotoVoltaics_TGM_PhotoVoltaics_TGM.TGM_Trina_Analytical_20160808.pipe >> ../files/PhotoVoltaics_TGM_PhotoVoltaics_TGM.TGM_Trina_Analytical_20160808.sim & python3 -m fmpy simulate --output-file PhotoVoltaics_TGM_PhotoVoltaics_TGM.TGM_Trina_Analytical_20160808_res.csv --start-time 0 --stop-time 86400 --timeout 50 --relative-tolerance 1e-08 --interface-type ModelExchange --solver CVode --output-interval 60 PhotoVoltaics_TGM_PhotoVoltaics_TGM_TGM_Trina_Analytical_20160808.fmu > PhotoVoltaics_TGM_PhotoVoltaics_TGM.TGM_Trina_Analytical_20160808.pipe 2>&1)