Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr IBPSA_latest_IBPSA.Fluid.Movers.Examples.ClosedLoop_y.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 4.0.0+maint.om/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/IBPSA 4.0.0-master/package.mo", uses=false) Using package IBPSA with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/IBPSA 4.0.0-master/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) Running command: translateModel(IBPSA.Fluid.Movers.Examples.ClosedLoop_y,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="IBPSA_latest_IBPSA.Fluid.Movers.Examples.ClosedLoop_y") translateModel(IBPSA.Fluid.Movers.Examples.ClosedLoop_y,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="IBPSA_latest_IBPSA.Fluid.Movers.Examples.ClosedLoop_y") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001521/0.001521, allocations: 101.2 kB / 16.27 MB, free: 5.973 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001621/0.001621, allocations: 188.6 kB / 17.19 MB, free: 5.602 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.356/1.356, allocations: 222.9 MB / 240.9 MB, free: 15.2 MB / 206.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/IBPSA 4.0.0-master/package.mo): time 0.7965/0.7965, allocations: 122.9 MB / 413.9 MB, free: 15.92 MB / 334.1 MB Notification: Performance of FrontEnd - loaded program: time 0.001194/0.001194, allocations: 67.89 kB / 0.4911 GB, free: 7.441 MB / 414.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.4711/0.4723, allocations: 77.91 MB / 0.5672 GB, free: 32.74 MB / 446.1 MB Notification: Performance of NFInst.instantiate(IBPSA.Fluid.Movers.Examples.ClosedLoop_y): time 0.6553/1.128, allocations: 206 MB / 0.7684 GB, free: 1.758 MB / 0.5762 GB Notification: Performance of NFInst.instExpressions: time 0.02402/1.152, allocations: 15.39 MB / 0.7834 GB, free: 1.574 MB / 0.5762 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.003446/1.155, allocations: 57.03 kB / 0.7835 GB, free: 1.574 MB / 0.5762 GB Notification: Performance of NFTyping.typeComponents: time 0.01058/1.166, allocations: 5.66 MB / 0.789 GB, free: 1.512 MB / 0.5762 GB Notification: Performance of NFTyping.typeBindings: time 0.007264/1.173, allocations: 2.587 MB / 0.7915 GB, free: 1.41 MB / 0.5762 GB Notification: Performance of NFTyping.typeClassSections: time 0.004111/1.177, allocations: 1.588 MB / 0.7931 GB, free: 1.383 MB / 0.5762 GB Notification: Performance of NFFlatten.flatten: time 0.01153/1.189, allocations: 9.031 MB / 0.8019 GB, free: 1.359 MB / 0.5762 GB Notification: Performance of NFFlatten.resolveConnections: time 0.002507/1.191, allocations: 1.393 MB / 0.8032 GB, free: 1.203 MB / 0.5762 GB Notification: Performance of NFEvalConstants.evaluate: time 0.004793/1.196, allocations: 2.005 MB / 0.8052 GB, free: 1.18 MB / 0.5762 GB Notification: Performance of NFSimplifyModel.simplify: time 0.002822/1.199, allocations: 1.211 MB / 0.8064 GB, free: 1.176 MB / 0.5762 GB Notification: Performance of NFPackage.collectConstants: time 0.0008489/1.2, allocations: 166.9 kB / 0.8065 GB, free: 1.176 MB / 0.5762 GB Notification: Performance of NFFlatten.collectFunctions: time 0.006552/1.206, allocations: 2.711 MB / 0.8092 GB, free: 1.152 MB / 0.5762 GB Notification: Performance of NFScalarize.scalarize: time 0.001433/1.208, allocations: 0.7306 MB / 0.8099 GB, free: 1.098 MB / 0.5762 GB Notification: Performance of NFVerifyModel.verify: time 0.002298/1.21, allocations: 1.071 MB / 0.8109 GB, free: 0.7852 MB / 0.5762 GB Notification: Performance of NFConvertDAE.convert: time 0.00862/1.219, allocations: 3.881 MB / 0.8147 GB, free: 0 / 0.5762 GB Notification: Performance of FrontEnd - DAE generated: time 8.225e-06/1.219, allocations: 192 / 0.8147 GB, free: 0 / 0.5762 GB Notification: Performance of FrontEnd: time 2.184e-06/1.219, allocations: 0.9375 kB / 0.8147 GB, free: 0 / 0.5762 GB Notification: Performance of Transformations before backend: time 7.307e-05/1.219, allocations: 64 / 0.8147 GB, free: 0 / 0.5762 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 244 * Number of variables: 244 Notification: Performance of Generate backend data structure: time 0.005879/1.225, allocations: 2.544 MB / 0.8172 GB, free: 14.42 MB / 0.5919 GB Notification: Performance of prepare preOptimizeDAE: time 4.34e-05/1.225, allocations: 9.906 kB / 0.8172 GB, free: 14.42 MB / 0.5919 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.004058/1.229, allocations: 0.6208 MB / 0.8178 GB, free: 14.16 MB / 0.5919 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.004774/1.234, allocations: 2.12 MB / 0.8199 GB, free: 13.24 MB / 0.5919 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 9.558e-05/1.234, allocations: 80.75 kB / 0.82 GB, free: 13.23 MB / 0.5919 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.000233/1.234, allocations: 118.6 kB / 0.8201 GB, free: 13.22 MB / 0.5919 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.002311/1.237, allocations: 1.296 MB / 0.8214 GB, free: 12.84 MB / 0.5919 GB Notification: Performance of preOpt findStateOrder (simulation): time 2.588e-05/1.237, allocations: 7.125 kB / 0.8214 GB, free: 12.84 MB / 0.5919 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.000109/1.237, allocations: 39.22 kB / 0.8214 GB, free: 12.84 MB / 0.5919 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 4.56e-05/1.237, allocations: 39.16 kB / 0.8214 GB, free: 12.83 MB / 0.5919 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.002169/1.239, allocations: 1.02 MB / 0.8224 GB, free: 12.66 MB / 0.5919 GB Warning: The model contains alias variables with redundant start and/or conflicting nominal values. It is recommended to resolve the conflicts, because otherwise the system could be hard to solve. To print the conflicting alias sets and the chosen candidates please use -d=aliasConflicts. Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.007888/1.247, allocations: 5.566 MB / 0.8279 GB, free: 8.449 MB / 0.5919 GB Notification: Performance of preOpt comSubExp (simulation): time 0.002475/1.249, allocations: 0.9474 MB / 0.8288 GB, free: 7.973 MB / 0.5919 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.001005/1.25, allocations: 491.4 kB / 0.8293 GB, free: 7.746 MB / 0.5919 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0002/1.251, allocations: 107 kB / 0.8294 GB, free: 7.645 MB / 0.5919 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.001155/1.252, allocations: 0.5783 MB / 0.8299 GB, free: 7.129 MB / 0.5919 GB Notification: Performance of pre-optimization done (n=68): time 3.487e-06/1.252, allocations: 3.188 kB / 0.8299 GB, free: 7.129 MB / 0.5919 GB Notification: Performance of matching and sorting (n=68): time 0.004385/1.256, allocations: 1.482 MB / 0.8314 GB, free: 5.617 MB / 0.5919 GB Notification: Performance of inlineWhenForInitialization (initialization): time 5.069e-05/1.256, allocations: 59.97 kB / 0.8314 GB, free: 5.547 MB / 0.5919 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.003045/1.259, allocations: 1.709 MB / 0.8331 GB, free: 3.84 MB / 0.5919 GB Notification: Performance of collectPreVariables (initialization): time 0.0002256/1.26, allocations: 41.7 kB / 0.8332 GB, free: 3.793 MB / 0.5919 GB Notification: Performance of collectInitialEqns (initialization): time 0.0007848/1.26, allocations: 0.773 MB / 0.8339 GB, free: 3.02 MB / 0.5919 GB Notification: Performance of collectInitialBindings (initialization): time 0.0003343/1.261, allocations: 243.2 kB / 0.8341 GB, free: 2.785 MB / 0.5919 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0004641/1.261, allocations: 290.6 kB / 0.8344 GB, free: 2.496 MB / 0.5919 GB Notification: Performance of setup shared object (initialization): time 0.0001338/1.261, allocations: 361.9 kB / 0.8348 GB, free: 2.137 MB / 0.5919 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.001362/1.263, allocations: 0.7641 MB / 0.8355 GB, free: 1.371 MB / 0.5919 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.001553/1.264, allocations: 1.042 MB / 0.8365 GB, free: 232 kB / 0.5919 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.002618/1.267, allocations: 1.714 MB / 0.8382 GB, free: 14.46 MB / 0.6075 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 6.823e-06/1.267, allocations: 4 kB / 0.8382 GB, free: 14.45 MB / 0.6075 GB Notification: Performance of matching and sorting (n=168) (initialization): time 0.003805/1.271, allocations: 2.128 MB / 0.8403 GB, free: 12.34 MB / 0.6075 GB Notification: Performance of prepare postOptimizeDAE: time 4.824e-05/1.271, allocations: 37.77 kB / 0.8403 GB, free: 12.3 MB / 0.6075 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.511e-05/1.271, allocations: 4 kB / 0.8403 GB, free: 12.29 MB / 0.6075 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0005059/1.271, allocations: 152.8 kB / 0.8405 GB, free: 12.14 MB / 0.6075 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.00117/1.272, allocations: 271.5 kB / 0.8407 GB, free: 11.89 MB / 0.6075 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.0009734/1.273, allocations: 1.24 MB / 0.8419 GB, free: 10.61 MB / 0.6075 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001767/1.275, allocations: 151.3 kB / 0.8421 GB, free: 10.46 MB / 0.6075 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001301/1.275, allocations: 63.98 kB / 0.8421 GB, free: 10.4 MB / 0.6075 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.00202/1.277, allocations: 1.069 MB / 0.8432 GB, free: 9.324 MB / 0.6075 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.001344/1.279, allocations: 0.9435 MB / 0.8441 GB, free: 8.285 MB / 0.6075 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.002403/1.281, allocations: 1.5 MB / 0.8456 GB, free: 6.723 MB / 0.6075 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 6.823e-06/1.281, allocations: 4 kB / 0.8456 GB, free: 6.719 MB / 0.6075 GB Notification: Performance of matching and sorting (n=168) (initialization_lambda0): time 0.003898/1.285, allocations: 1.936 MB / 0.8475 GB, free: 4.801 MB / 0.6075 GB Notification: Performance of prepare postOptimizeDAE: time 4.807e-05/1.285, allocations: 37.7 kB / 0.8475 GB, free: 4.758 MB / 0.6075 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.284e-05/1.285, allocations: 8 kB / 0.8475 GB, free: 4.75 MB / 0.6075 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0006494/1.286, allocations: 176.7 kB / 0.8477 GB, free: 4.574 MB / 0.6075 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.00102/1.287, allocations: 247.5 kB / 0.8479 GB, free: 4.348 MB / 0.6075 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.005259/1.292, allocations: 3.402 MB / 0.8512 GB, free: 0.75 MB / 0.6075 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001737/1.294, allocations: 115.7 kB / 0.8513 GB, free: 0.6367 MB / 0.6075 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0002268/1.294, allocations: 55.98 kB / 0.8514 GB, free: 0.582 MB / 0.6075 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 24 * Number of states: 0 () * Number of discrete variables: 6 (y.count,$PRE.y.count,y.T_start,$PRE.y.T_start,$whenCondition1,conPID.I.trigger_internal) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (129): * Single equations (assignments): 124 * Array equations: 1 * Algorithm blocks: 1 * Record equations: 1 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 1 * Torn equation systems: 1 * 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 {1} * Without analytic Jacobian (size): 0 systems 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 prepare postOptimizeDAE: time 0.0004565/1.295, allocations: 250.4 kB / 0.8516 GB, free: 356 kB / 0.6075 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0005038/1.295, allocations: 165.8 kB / 0.8518 GB, free: 188 kB / 0.6075 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.002876/1.298, allocations: 1.118 MB / 0.8529 GB, free: 15.05 MB / 0.6231 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 8.105e-06/1.298, allocations: 8 kB / 0.8529 GB, free: 15.05 MB / 0.6231 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 3.857e-06/1.298, allocations: 0 / 0.8529 GB, free: 15.05 MB / 0.6231 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.002066/1.3, allocations: 0.9891 MB / 0.8539 GB, free: 14.03 MB / 0.6231 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.00516/1.305, allocations: 2.529 MB / 0.8563 GB, free: 11.46 MB / 0.6231 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 4.879e-06/1.305, allocations: 0 / 0.8563 GB, free: 11.46 MB / 0.6231 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0009437/1.306, allocations: 174.3 kB / 0.8565 GB, free: 11.3 MB / 0.6231 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0002884/1.307, allocations: 96.3 kB / 0.8566 GB, free: 11.2 MB / 0.6231 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 7.422e-05/1.307, allocations: 19.98 kB / 0.8566 GB, free: 11.18 MB / 0.6231 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.0007648/1.307, allocations: 1.216 MB / 0.8578 GB, free: 9.922 MB / 0.6231 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 3.757e-06/1.307, allocations: 4.031 kB / 0.8578 GB, free: 9.918 MB / 0.6231 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.003513/1.311, allocations: 1.664 MB / 0.8594 GB, free: 8.227 MB / 0.6231 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0007855/1.312, allocations: 330.8 kB / 0.8597 GB, free: 7.883 MB / 0.6231 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0003983/1.312, allocations: 28.11 kB / 0.8598 GB, free: 7.855 MB / 0.6231 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.00108/1.313, allocations: 47.95 kB / 0.8598 GB, free: 7.809 MB / 0.6231 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001353/1.313, allocations: 51.59 kB / 0.8599 GB, free: 7.762 MB / 0.6231 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 8.069e-05/1.313, allocations: 27.98 kB / 0.8599 GB, free: 7.734 MB / 0.6231 GB Notification: Performance of sorting global known variables: time 0.002189/1.316, allocations: 1.151 MB / 0.861 GB, free: 6.594 MB / 0.6231 GB Notification: Performance of sort global known variables: time 3.31e-07/1.316, allocations: 0 / 0.861 GB, free: 6.594 MB / 0.6231 GB Notification: Performance of remove unused functions: time 0.003008/1.319, allocations: 0.9631 MB / 0.862 GB, free: 5.629 MB / 0.6231 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 5 * Number of states: 6 (fan.vol.dynBal.medium.Xi[1],fan.vol.dynBal.U,fan.vol.dynBal.m,fan.filter.s[1],fan.filter.s[2],conPID.I.y) * Number of discrete variables: 3 ($whenCondition1,y.T_start,y.count) * Number of discrete states: 1 (y.count) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (65): * Single equations (assignments): 61 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 2 * If-equations: 0 * Equation systems (not torn): 1 * Torn equation systems: 1 * 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 {1} * Without analytic Jacobian (size): 0 systems 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 {(1,5)} Notification: Performance of Backend phase and start with SimCode phase: time 0.001624/1.32, allocations: 0.5616 MB / 0.8625 GB, free: 5.102 MB / 0.6231 GB Notification: Performance of simCode: created initialization part: time 0.005331/1.326, allocations: 2.634 MB / 0.8651 GB, free: 2.484 MB / 0.6231 GB Notification: Performance of simCode: created event and clocks part: time 4.408e-06/1.326, allocations: 0 / 0.8651 GB, free: 2.484 MB / 0.6231 GB Notification: Performance of simCode: created simulation system equations: time 0.001147/1.327, allocations: 487.1 kB / 0.8655 GB, free: 2.027 MB / 0.6231 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.003939/1.331, allocations: 0.8729 MB / 0.8664 GB, free: 1.203 MB / 0.6231 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.005733/1.337, allocations: 3.211 MB / 0.8695 GB, free: 13.96 MB / 0.6387 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.001277/1.338, allocations: 1.459 MB / 0.871 GB, free: 12.47 MB / 0.6387 GB Notification: Performance of simCode: alias equations: time 0.00209/1.34, allocations: 469.8 kB / 0.8714 GB, free: 12 MB / 0.6387 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.000436/1.34, allocations: 127.4 kB / 0.8715 GB, free: 11.88 MB / 0.6387 GB Notification: Performance of SimCode: time 6.41e-07/1.34, allocations: 0 / 0.8715 GB, free: 11.88 MB / 0.6387 GB Notification: Performance of Templates: time 0.0677/1.408, allocations: 37.87 MB / 0.9085 GB, free: 6.562 MB / 0.67 GB make -j1 -f IBPSA_latest_IBPSA.Fluid.Movers.Examples.ClosedLoop_y.makefile (rm -f IBPSA_latest_IBPSA.Fluid.Movers.Examples.ClosedLoop_y.pipe ; mkfifo IBPSA_latest_IBPSA.Fluid.Movers.Examples.ClosedLoop_y.pipe ; head -c 1048576 < IBPSA_latest_IBPSA.Fluid.Movers.Examples.ClosedLoop_y.pipe >> ../files/IBPSA_latest_IBPSA.Fluid.Movers.Examples.ClosedLoop_y.sim & ./IBPSA_latest_IBPSA.Fluid.Movers.Examples.ClosedLoop_y -abortSlowSimulation -alarm=480 -lv LOG_STATS > IBPSA_latest_IBPSA.Fluid.Movers.Examples.ClosedLoop_y.pipe 2>&1)