Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr IBPSA_latest_IBPSA.Fluid.Examples.ResistanceVolumeFlowReversal.conf.json 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/IBPSA 4.0.0-master/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/ModelicaServices 4.0.0+maint.om/package.mo", uses=false) 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 Modelica with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo) Using package IBPSA with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/IBPSA 4.0.0-master/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) Running command: translateModel(IBPSA.Fluid.Examples.ResistanceVolumeFlowReversal,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="IBPSA_latest_IBPSA.Fluid.Examples.ResistanceVolumeFlowReversal") translateModel(IBPSA.Fluid.Examples.ResistanceVolumeFlowReversal,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="IBPSA_latest_IBPSA.Fluid.Examples.ResistanceVolumeFlowReversal") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001148/0.001148, allocations: 182.7 kB / 16.63 MB, free: 5.117 MB / 13.93 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/IBPSA 4.0.0-master/package.mo): time 0.4638/0.4638, allocations: 87.51 MB / 104.9 MB, free: 13.02 MB / 90.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.411/1.411, allocations: 222.9 MB / 349.1 MB, free: 2.73 MB / 282.7 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001038/0.001038, allocations: 100.2 kB / 420 MB, free: 8.469 MB / 314.7 MB Notification: Performance of FrontEnd - loaded program: time 0.001012/0.001012, allocations: 63.84 kB / 0.4891 GB, free: 7.688 MB / 394.7 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.3918/0.3929, allocations: 70.06 MB / 0.5575 GB, free: 44.71 MB / 410.7 MB Notification: Performance of NFInst.instantiate(IBPSA.Fluid.Examples.ResistanceVolumeFlowReversal): time 0.06912/0.462, allocations: 80.01 MB / 0.6356 GB, free: 12.91 MB / 458.7 MB Notification: Performance of NFInst.instExpressions: time 0.03279/0.4949, allocations: 19.34 MB / 0.6545 GB, free: 9.527 MB / 474.7 MB Notification: Performance of NFInst.updateImplicitVariability: time 0.008136/0.5031, allocations: 99.31 kB / 0.6546 GB, free: 9.43 MB / 474.7 MB Notification: Performance of NFTyping.typeComponents: time 0.005627/0.5089, allocations: 0.9814 MB / 0.6555 GB, free: 8.445 MB / 474.7 MB Notification: Performance of NFTyping.typeBindings: time 0.01006/0.519, allocations: 2.589 MB / 0.6581 GB, free: 5.848 MB / 474.7 MB Notification: Performance of NFTyping.typeClassSections: time 0.007899/0.527, allocations: 2.168 MB / 0.6602 GB, free: 3.695 MB / 474.7 MB Notification: Performance of NFFlatten.flatten: time 0.02674/0.5537, allocations: 20.86 MB / 0.6806 GB, free: 14.79 MB / 0.4948 GB Notification: Performance of NFFlatten.resolveConnections: time 0.01193/0.5657, allocations: 6.155 MB / 0.6866 GB, free: 8.535 MB / 0.4948 GB Notification: Performance of NFEvalConstants.evaluate: time 0.01512/0.5809, allocations: 4.879 MB / 0.6913 GB, free: 3.637 MB / 0.4948 GB Notification: Performance of NFSimplifyModel.simplify: time 0.01041/0.5913, allocations: 5.03 MB / 0.6963 GB, free: 14.59 MB / 0.5105 GB Notification: Performance of NFPackage.collectConstants: time 0.002662/0.5941, allocations: 316 kB / 0.6966 GB, free: 14.28 MB / 0.5105 GB Notification: Performance of NFFlatten.collectFunctions: time 0.00811/0.6022, allocations: 1.553 MB / 0.6981 GB, free: 12.72 MB / 0.5105 GB Notification: Performance of NFScalarize.scalarize: time 0.003991/0.6062, allocations: 1.354 MB / 0.6994 GB, free: 11.36 MB / 0.5105 GB Notification: Performance of NFVerifyModel.verify: time 0.01006/0.6163, allocations: 2.993 MB / 0.7023 GB, free: 8.355 MB / 0.5105 GB Notification: Performance of NFConvertDAE.convert: time 0.4219/1.038, allocations: 8.75 MB / 0.7109 GB, free: 40.62 MB / 0.5105 GB Notification: Performance of FrontEnd - DAE generated: time 9.468e-06/1.038, allocations: 0 / 0.7109 GB, free: 40.62 MB / 0.5105 GB Notification: Performance of FrontEnd: time 2.926e-06/1.038, allocations: 4.547 kB / 0.7109 GB, free: 40.62 MB / 0.5105 GB Notification: Performance of Transformations before backend: time 0.0004303/1.039, allocations: 0.5625 kB / 0.7109 GB, free: 40.62 MB / 0.5105 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 834 * Number of variables: 834 Notification: Performance of Generate backend data structure: time 0.02031/1.059, allocations: 6.489 MB / 0.7172 GB, free: 38.25 MB / 0.5105 GB Notification: Performance of prepare preOptimizeDAE: time 4.739e-05/1.059, allocations: 9 kB / 0.7172 GB, free: 38.25 MB / 0.5105 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.005501/1.065, allocations: 0.9046 MB / 0.7181 GB, free: 37.95 MB / 0.5105 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.01398/1.079, allocations: 5.31 MB / 0.7233 GB, free: 36.99 MB / 0.5105 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0004852/1.079, allocations: 256.4 kB / 0.7235 GB, free: 36.98 MB / 0.5105 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.00224/1.081, allocations: 341.6 kB / 0.7238 GB, free: 36.98 MB / 0.5105 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.01653/1.098, allocations: 5.732 MB / 0.7294 GB, free: 36.3 MB / 0.5105 GB Notification: Performance of preOpt findStateOrder (simulation): time 8.575e-05/1.098, allocations: 10.84 kB / 0.7295 GB, free: 36.3 MB / 0.5105 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0006165/1.099, allocations: 144 kB / 0.7296 GB, free: 36.3 MB / 0.5105 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.0001212/1.099, allocations: 115 kB / 0.7297 GB, free: 36.29 MB / 0.5105 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0107/1.11, allocations: 5.575 MB / 0.7351 GB, free: 36.26 MB / 0.5105 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 0.0364/1.146, allocations: 23.8 MB / 0.7584 GB, free: 25.27 MB / 0.5105 GB Notification: Performance of preOpt comSubExp (simulation): time 0.004216/1.15, allocations: 2.792 MB / 0.7611 GB, free: 24.86 MB / 0.5105 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.00258/1.153, allocations: 1.914 MB / 0.763 GB, free: 24.54 MB / 0.5105 GB Notification: Performance of preOpt evalFunc (simulation): time 0.01248/1.165, allocations: 7.082 MB / 0.7699 GB, free: 20.85 MB / 0.5105 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.002837/1.168, allocations: 1.944 MB / 0.7718 GB, free: 20.14 MB / 0.5105 GB Notification: Performance of preOpt simplifyInStream (simulation): time 0.004724/1.173, allocations: 1.195 MB / 0.773 GB, free: 19.05 MB / 0.5105 GB Notification: Performance of pre-optimization done (n=156): time 1.33e-05/1.173, allocations: 0 / 0.773 GB, free: 19.05 MB / 0.5105 GB Notification: Performance of matching and sorting (n=156): time 0.02069/1.194, allocations: 7.415 MB / 0.7802 GB, free: 13.36 MB / 0.5105 GB Notification: Performance of inlineWhenForInitialization (initialization): time 4.711e-05/1.194, allocations: 76.7 kB / 0.7803 GB, free: 13.27 MB / 0.5105 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.008834/1.203, allocations: 4.894 MB / 0.7851 GB, free: 8.395 MB / 0.5105 GB Notification: Performance of collectPreVariables (initialization): time 0.0007285/1.203, allocations: 65.7 kB / 0.7851 GB, free: 8.324 MB / 0.5105 GB Notification: Performance of collectInitialEqns (initialization): time 0.002458/1.206, allocations: 2.46 MB / 0.7875 GB, free: 5.855 MB / 0.5105 GB Notification: Performance of collectInitialBindings (initialization): time 0.001313/1.207, allocations: 0.5507 MB / 0.7881 GB, free: 5.309 MB / 0.5105 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.001835/1.209, allocations: 0.6022 MB / 0.7887 GB, free: 4.699 MB / 0.5105 GB Notification: Performance of setup shared object (initialization): time 6.188e-05/1.209, allocations: 308.1 kB / 0.7889 GB, free: 4.398 MB / 0.5105 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.002829/1.212, allocations: 1.703 MB / 0.7906 GB, free: 2.688 MB / 0.5105 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.003512/1.216, allocations: 2.879 MB / 0.7934 GB, free: 15.28 MB / 0.5261 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.007167/1.223, allocations: 4.612 MB / 0.7979 GB, free: 10.33 MB / 0.5261 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 3.332e-05/1.223, allocations: 8 kB / 0.7979 GB, free: 10.32 MB / 0.5261 GB Notification: Performance of matching and sorting (n=336) (initialization): time 0.01301/1.236, allocations: 6.096 MB / 0.8039 GB, free: 4.422 MB / 0.5261 GB Notification: Performance of prepare postOptimizeDAE: time 8.085e-05/1.236, allocations: 51.73 kB / 0.8039 GB, free: 4.367 MB / 0.5261 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 7.063e-05/1.236, allocations: 35.98 kB / 0.804 GB, free: 4.332 MB / 0.5261 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.07152/1.308, allocations: 12.02 MB / 0.8157 GB, free: 8.391 MB / 0.5417 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.003051/1.311, allocations: 0.6707 MB / 0.8164 GB, free: 7.762 MB / 0.5417 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.008497/1.319, allocations: 5.032 MB / 0.8213 GB, free: 2.68 MB / 0.5417 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.00569/1.325, allocations: 332 kB / 0.8216 GB, free: 2.355 MB / 0.5417 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0006424/1.326, allocations: 163.9 kB / 0.8218 GB, free: 2.195 MB / 0.5417 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.005661/1.331, allocations: 2.95 MB / 0.8246 GB, free: 15.24 MB / 0.5573 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.003637/1.335, allocations: 2.818 MB / 0.8274 GB, free: 11.89 MB / 0.5573 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.006116/1.341, allocations: 4.468 MB / 0.8317 GB, free: 7.094 MB / 0.5573 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 2.888e-05/1.341, allocations: 19.92 kB / 0.8318 GB, free: 7.074 MB / 0.5573 GB Notification: Performance of matching and sorting (n=336) (initialization_lambda0): time 0.01169/1.353, allocations: 5.788 MB / 0.8374 GB, free: 1.469 MB / 0.5573 GB Notification: Performance of prepare postOptimizeDAE: time 6.359e-05/1.353, allocations: 49.69 kB / 0.8375 GB, free: 1.414 MB / 0.5573 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 5.961e-05/1.353, allocations: 36 kB / 0.8375 GB, free: 1.379 MB / 0.5573 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.07202/1.425, allocations: 11.81 MB / 0.849 GB, free: 5.66 MB / 0.573 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.003158/1.428, allocations: 0.6542 MB / 0.8497 GB, free: 5.043 MB / 0.573 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.01311/1.441, allocations: 8.018 MB / 0.8575 GB, free: 12.75 MB / 0.5886 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.007435/1.449, allocations: 340.5 kB / 0.8578 GB, free: 12.42 MB / 0.5886 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.001179/1.45, allocations: 159.9 kB / 0.858 GB, free: 12.27 MB / 0.5886 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 149 * Number of states: 0 () * Number of discrete variables: 7 (pulse.count,$PRE.pulse.count,pulse.T_start,$PRE.pulse.T_start,$whenCondition1,nRes.y,allowFlowReversal.y) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (285): * Single equations (assignments): 280 * Array equations: 1 * Algorithm blocks: 1 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 3 * 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): 3 systems {(11,13), (10,11), (2,5)} Notification: Performance of prepare postOptimizeDAE: time 0.002001/1.452, allocations: 380.5 kB / 0.8583 GB, free: 11.93 MB / 0.5886 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.002265/1.454, allocations: 462.3 kB / 0.8588 GB, free: 11.47 MB / 0.5886 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.01061/1.465, allocations: 4.855 MB / 0.8635 GB, free: 6.629 MB / 0.5886 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 4.967e-05/1.465, allocations: 23.92 kB / 0.8635 GB, free: 6.605 MB / 0.5886 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 9.016e-06/1.465, allocations: 0 / 0.8635 GB, free: 6.605 MB / 0.5886 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.02026/1.485, allocations: 6.914 MB / 0.8703 GB, free: 15.48 MB / 0.6042 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 postOpt removeSimpleEquations (simulation): time 0.03922/1.525, allocations: 13.01 MB / 0.883 GB, free: 2.438 MB / 0.6042 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 2.466e-05/1.525, allocations: 4 kB / 0.883 GB, free: 2.434 MB / 0.6042 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.002532/1.527, allocations: 364.2 kB / 0.8834 GB, free: 2.09 MB / 0.6042 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.06942/1.597, allocations: 12.03 MB / 0.8951 GB, free: 6.129 MB / 0.6198 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0005924/1.597, allocations: 43.97 kB / 0.8951 GB, free: 6.086 MB / 0.6198 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.007125/1.604, allocations: 4.321 MB / 0.8994 GB, free: 1.691 MB / 0.6198 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 4.278e-06/1.604, allocations: 0 / 0.8994 GB, free: 1.691 MB / 0.6198 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.9833/2.588, allocations: 148.9 MB / 1.045 GB, free: 204.3 MB / 0.6667 GB Notification: Performance of postOpt removeConstants (simulation): time 0.003938/2.592, allocations: 0.9944 MB / 1.046 GB, free: 203.5 MB / 0.6667 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.001795/2.594, allocations: 31.83 kB / 1.046 GB, free: 203.5 MB / 0.6667 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.004515/2.598, allocations: 267.5 kB / 1.046 GB, free: 203.3 MB / 0.6667 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0004603/2.599, allocations: 112.8 kB / 1.046 GB, free: 203.1 MB / 0.6667 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0004003/2.599, allocations: 79.92 kB / 1.046 GB, free: 203.1 MB / 0.6667 GB Notification: Performance of sorting global known variables: time 0.005887/2.605, allocations: 3.354 MB / 1.049 GB, free: 199.7 MB / 0.6667 GB Notification: Performance of sort global known variables: time 2.7e-07/2.605, allocations: 0 / 1.049 GB, free: 199.7 MB / 0.6667 GB Notification: Performance of remove unused functions: time 0.01963/2.625, allocations: 4.515 MB / 1.054 GB, free: 195.5 MB / 0.6667 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 3 * Number of states: 4 (pump.vol.dynBal.U,hea.outCon.T,val.filter.s[1],val.filter.s[2]) * Number of discrete variables: 3 ($whenCondition1,pulse.T_start,pulse.count) * Number of discrete states: 1 (pulse.count) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (128): * Single equations (assignments): 119 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 4 * When equations: 2 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 3 * 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): 3 systems {(10,3), (2,5), (10,11)} Notification: Performance of Backend phase and start with SimCode phase: time 0.002021/2.627, allocations: 0.6149 MB / 1.054 GB, free: 195 MB / 0.6667 GB Notification: Performance of simCode: created initialization part: time 0.01514/2.642, allocations: 7.51 MB / 1.062 GB, free: 187.4 MB / 0.6667 GB Notification: Performance of simCode: created event and clocks part: time 8.096e-06/2.642, allocations: 4 kB / 1.062 GB, free: 187.4 MB / 0.6667 GB Notification: Performance of simCode: created simulation system equations: time 0.005377/2.647, allocations: 2.488 MB / 1.064 GB, free: 185 MB / 0.6667 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.01472/2.662, allocations: 2.732 MB / 1.067 GB, free: 182.3 MB / 0.6667 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.02505/2.687, allocations: 13.64 MB / 1.08 GB, free: 168.6 MB / 0.6667 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.003245/2.69, allocations: 3.308 MB / 1.083 GB, free: 165.2 MB / 0.6667 GB Notification: Performance of simCode: alias equations: time 0.005911/2.696, allocations: 1.747 MB / 1.085 GB, free: 163.5 MB / 0.6667 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.001291/2.698, allocations: 363.2 kB / 1.086 GB, free: 163.1 MB / 0.6667 GB Notification: Performance of SimCode: time 1.032e-06/2.698, allocations: 4 kB / 1.086 GB, free: 163.1 MB / 0.6667 GB Notification: Performance of Templates: time 0.1852/2.883, allocations: 147.3 MB / 1.229 GB, free: 16.59 MB / 0.6667 GB make -j1 -f IBPSA_latest_IBPSA.Fluid.Examples.ResistanceVolumeFlowReversal.makefile (rm -f IBPSA_latest_IBPSA.Fluid.Examples.ResistanceVolumeFlowReversal.pipe ; mkfifo IBPSA_latest_IBPSA.Fluid.Examples.ResistanceVolumeFlowReversal.pipe ; head -c 1048576 < IBPSA_latest_IBPSA.Fluid.Examples.ResistanceVolumeFlowReversal.pipe >> ../files/IBPSA_latest_IBPSA.Fluid.Examples.ResistanceVolumeFlowReversal.sim & ./IBPSA_latest_IBPSA.Fluid.Examples.ResistanceVolumeFlowReversal -abortSlowSimulation -alarm=480 -lv LOG_STATS > IBPSA_latest_IBPSA.Fluid.Examples.ResistanceVolumeFlowReversal.pipe 2>&1)