/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/BuchiAutomizerBplInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Termination-32bit-Automizer_Default.epf --buchiautomizer.automaton.type.for.concurrent.programs BUCHI_AUTOMATON -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/clever.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.fs.rabin-petrinet-4c29625-m [2023-10-12 17:12:47,806 INFO L172 SettingsManager]: Resetting all preferences to default values... [2023-10-12 17:12:47,908 INFO L100 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Termination-32bit-Automizer_Default.epf [2023-10-12 17:12:47,944 INFO L114 SettingsManager]: Preferences different from defaults after loading the file: [2023-10-12 17:12:47,945 INFO L135 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-10-12 17:12:47,945 INFO L137 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-10-12 17:12:47,946 INFO L135 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-10-12 17:12:47,946 INFO L137 SettingsManager]: * Create parallel compositions if possible=false [2023-10-12 17:12:47,947 INFO L137 SettingsManager]: * Use SBE=true [2023-10-12 17:12:47,950 INFO L135 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-10-12 17:12:47,950 INFO L137 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-10-12 17:12:47,950 INFO L137 SettingsManager]: * Use old map elimination=false [2023-10-12 17:12:47,950 INFO L137 SettingsManager]: * Use external solver (rank synthesis)=false [2023-10-12 17:12:47,951 INFO L137 SettingsManager]: * Use only trivial implications for array writes=true [2023-10-12 17:12:47,951 INFO L137 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-10-12 17:12:47,952 INFO L135 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-10-12 17:12:47,952 INFO L137 SettingsManager]: * sizeof long=4 [2023-10-12 17:12:47,952 INFO L137 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-10-12 17:12:47,952 INFO L137 SettingsManager]: * Overapproximate operations on floating types=true [2023-10-12 17:12:47,952 INFO L137 SettingsManager]: * sizeof POINTER=4 [2023-10-12 17:12:47,952 INFO L137 SettingsManager]: * Check division by zero=IGNORE [2023-10-12 17:12:47,953 INFO L137 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-10-12 17:12:47,954 INFO L137 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-10-12 17:12:47,954 INFO L137 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-10-12 17:12:47,954 INFO L137 SettingsManager]: * sizeof long double=12 [2023-10-12 17:12:47,954 INFO L137 SettingsManager]: * Check if freed pointer was valid=false [2023-10-12 17:12:47,954 INFO L137 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-10-12 17:12:47,954 INFO L137 SettingsManager]: * Use constant arrays=true [2023-10-12 17:12:47,955 INFO L137 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-10-12 17:12:47,955 INFO L135 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-10-12 17:12:47,955 INFO L137 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-10-12 17:12:47,956 INFO L135 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-10-12 17:12:47,956 INFO L137 SettingsManager]: * Trace refinement strategy=CAMEL [2023-10-12 17:12:47,957 INFO L135 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-10-12 17:12:47,957 INFO L137 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: Automaton type for concurrent programs -> BUCHI_AUTOMATON [2023-10-12 17:12:48,300 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-10-12 17:12:48,321 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-10-12 17:12:48,323 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-10-12 17:12:48,324 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2023-10-12 17:12:48,335 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2023-10-12 17:12:48,336 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/clever.wvr.bpl [2023-10-12 17:12:48,336 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/clever.wvr.bpl' [2023-10-12 17:12:48,369 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-10-12 17:12:48,370 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2023-10-12 17:12:48,371 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-10-12 17:12:48,371 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-10-12 17:12:48,372 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-10-12 17:12:48,387 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "clever.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:12:48" (1/1) ... [2023-10-12 17:12:48,402 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "clever.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:12:48" (1/1) ... [2023-10-12 17:12:48,406 INFO L138 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2023-10-12 17:12:48,407 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-10-12 17:12:48,416 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-10-12 17:12:48,417 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-10-12 17:12:48,417 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-10-12 17:12:48,423 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "clever.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:12:48" (1/1) ... [2023-10-12 17:12:48,423 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "clever.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:12:48" (1/1) ... [2023-10-12 17:12:48,424 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "clever.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:12:48" (1/1) ... [2023-10-12 17:12:48,424 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "clever.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:12:48" (1/1) ... [2023-10-12 17:12:48,442 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "clever.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:12:48" (1/1) ... [2023-10-12 17:12:48,445 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "clever.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:12:48" (1/1) ... [2023-10-12 17:12:48,445 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "clever.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:12:48" (1/1) ... [2023-10-12 17:12:48,446 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "clever.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:12:48" (1/1) ... [2023-10-12 17:12:48,447 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-10-12 17:12:48,448 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-10-12 17:12:48,448 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-10-12 17:12:48,448 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-10-12 17:12:48,449 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "clever.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:12:48" (1/1) ... [2023-10-12 17:12:48,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:12:48,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:12:48,493 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:12:48,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-10-12 17:12:48,541 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2023-10-12 17:12:48,541 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-10-12 17:12:48,541 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-10-12 17:12:48,541 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2023-10-12 17:12:48,541 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-10-12 17:12:48,541 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-10-12 17:12:48,542 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2023-10-12 17:12:48,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-10-12 17:12:48,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-10-12 17:12:48,543 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-10-12 17:12:48,576 INFO L236 CfgBuilder]: Building ICFG [2023-10-12 17:12:48,577 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-10-12 17:12:48,708 INFO L277 CfgBuilder]: Performing block encoding [2023-10-12 17:12:48,712 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-10-12 17:12:48,712 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-10-12 17:12:48,714 INFO L201 PluginConnector]: Adding new model clever.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:12:48 BoogieIcfgContainer [2023-10-12 17:12:48,714 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-10-12 17:12:48,714 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-10-12 17:12:48,714 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-10-12 17:12:48,718 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-10-12 17:12:48,719 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-10-12 17:12:48,719 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "clever.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.10 05:12:48" (1/2) ... [2023-10-12 17:12:48,720 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5939eb07 and model type clever.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 12.10 05:12:48, skipping insertion in model container [2023-10-12 17:12:48,720 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-10-12 17:12:48,720 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "clever.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 05:12:48" (2/2) ... [2023-10-12 17:12:48,721 INFO L332 chiAutomizerObserver]: Analyzing ICFG clever.wvr.bpl [2023-10-12 17:12:48,756 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-10-12 17:12:48,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 30 places, 28 transitions, 72 flow [2023-10-12 17:12:48,788 INFO L124 PetriNetUnfolderBase]: 3/24 cut-off events. [2023-10-12 17:12:48,788 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-10-12 17:12:48,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33 conditions, 24 events. 3/24 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 36 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 17. Up to 2 conditions per place. [2023-10-12 17:12:48,791 INFO L82 GeneralOperation]: Start removeDead. Operand has 30 places, 28 transitions, 72 flow [2023-10-12 17:12:48,793 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 28 places, 24 transitions, 60 flow [2023-10-12 17:12:48,796 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-10-12 17:12:48,810 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 28 places, 24 transitions, 60 flow [2023-10-12 17:12:48,812 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 28 places, 24 transitions, 60 flow [2023-10-12 17:12:48,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 28 places, 24 transitions, 60 flow [2023-10-12 17:12:48,818 INFO L124 PetriNetUnfolderBase]: 3/24 cut-off events. [2023-10-12 17:12:48,818 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-10-12 17:12:48,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33 conditions, 24 events. 3/24 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 36 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 17. Up to 2 conditions per place. [2023-10-12 17:12:48,819 INFO L119 LiptonReduction]: Number of co-enabled transitions 118 [2023-10-12 17:12:48,992 INFO L134 LiptonReduction]: Checked pairs total: 72 [2023-10-12 17:12:48,992 INFO L136 LiptonReduction]: Total number of compositions: 12 [2023-10-12 17:12:49,005 INFO L305 stractBuchiCegarLoop]: Interprodecural is true [2023-10-12 17:12:49,005 INFO L306 stractBuchiCegarLoop]: Hoare is false [2023-10-12 17:12:49,005 INFO L307 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-10-12 17:12:49,005 INFO L308 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-10-12 17:12:49,005 INFO L309 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-10-12 17:12:49,005 INFO L310 stractBuchiCegarLoop]: Difference is false [2023-10-12 17:12:49,005 INFO L311 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-10-12 17:12:49,006 INFO L315 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-10-12 17:12:49,007 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 0 states, but on-demand construction may add more states [2023-10-12 17:12:49,023 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 8 [2023-10-12 17:12:49,023 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-10-12 17:12:49,023 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-10-12 17:12:49,026 INFO L149 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-10-12 17:12:49,027 INFO L150 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-10-12 17:12:49,027 INFO L337 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-10-12 17:12:49,027 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 15 states, but on-demand construction may add more states [2023-10-12 17:12:49,028 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 8 [2023-10-12 17:12:49,028 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-10-12 17:12:49,028 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-10-12 17:12:49,028 INFO L149 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-10-12 17:12:49,028 INFO L150 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-10-12 17:12:49,031 INFO L748 eck$LassoCheckResult]: Stem: 33#[$Ultimate##0]don't care [88] $Ultimate##0-->L44: Formula: (and (= v_i1_14 v_k2_13) (<= 0 v_m_9) (= v_i1_14 v_i2_10) (= v_i1_14 0) (= v_i1_14 v_k1_13)) InVars {m=v_m_9, i1=v_i1_14, i2=v_i2_10, k1=v_k1_13, k2=v_k2_13} OutVars{m=v_m_9, i1=v_i1_14, i2=v_i2_10, k1=v_k1_13, k2=v_k2_13} AuxVars[] AssignedVars[] 36#[L44]don't care [74] L44-->L20: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0] 38#[L44-1, L20]don't care [2023-10-12 17:12:49,031 INFO L750 eck$LassoCheckResult]: Loop: 38#[L44-1, L20]don't care [83] L20-->L22-1: Formula: (and (< v_i1_8 v_n_7) (= v_j1_6 0)) InVars {n=v_n_7, i1=v_i1_8} OutVars{n=v_n_7, i1=v_i1_8, j1=v_j1_6} AuxVars[] AssignedVars[j1] 42#[L44-1, L22-1]don't care [87] L22-1-->L20: Formula: (and (= (+ v_i1_11 1) v_i1_10) (<= v_m_7 v_j1_12)) InVars {m=v_m_7, i1=v_i1_11, j1=v_j1_12} OutVars{m=v_m_7, i1=v_i1_10, j1=v_j1_12} AuxVars[] AssignedVars[i1] 38#[L44-1, L20]don't care [2023-10-12 17:12:49,035 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:12:49,035 INFO L85 PathProgramCache]: Analyzing trace with hash 3763, now seen corresponding path program 1 times [2023-10-12 17:12:49,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:12:49,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469448567] [2023-10-12 17:12:49,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:12:49,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:12:49,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:12:49,129 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:12:49,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:12:49,155 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:12:49,158 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:12:49,158 INFO L85 PathProgramCache]: Analyzing trace with hash 3621, now seen corresponding path program 1 times [2023-10-12 17:12:49,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:12:49,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480381426] [2023-10-12 17:12:49,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:12:49,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:12:49,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:12:49,172 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:12:49,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:12:49,180 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:12:49,181 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:12:49,181 INFO L85 PathProgramCache]: Analyzing trace with hash 3618903, now seen corresponding path program 1 times [2023-10-12 17:12:49,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:12:49,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971017482] [2023-10-12 17:12:49,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:12:49,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:12:49,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:12:49,194 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:12:49,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:12:49,207 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:12:49,258 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:12:49,259 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:12:49,259 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:12:49,259 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:12:49,259 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-10-12 17:12:49,259 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:12:49,259 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:12:49,259 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:12:49,259 INFO L133 ssoRankerPreferences]: Filename of dumped script: clever.wvr.bpl_BEv2_Iteration1_Loop [2023-10-12 17:12:49,259 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:12:49,259 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:12:49,269 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:12:49,279 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:12:49,288 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:12:49,323 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:12:49,324 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-10-12 17:12:49,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:12:49,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:12:49,341 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:12:49,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2023-10-12 17:12:49,346 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:12:49,346 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:12:49,360 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-10-12 17:12:49,360 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {m=0} Honda state: {m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-10-12 17:12:49,369 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2023-10-12 17:12:49,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:12:49,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:12:49,383 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:12:49,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2023-10-12 17:12:49,386 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:12:49,386 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:12:49,409 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2023-10-12 17:12:49,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:12:49,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:12:49,411 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:12:49,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2023-10-12 17:12:49,414 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:12:49,414 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:12:49,524 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-10-12 17:12:49,529 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2023-10-12 17:12:49,529 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:12:49,529 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:12:49,529 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:12:49,529 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:12:49,529 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:12:49,529 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:12:49,529 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:12:49,529 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:12:49,530 INFO L133 ssoRankerPreferences]: Filename of dumped script: clever.wvr.bpl_BEv2_Iteration1_Loop [2023-10-12 17:12:49,530 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:12:49,530 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:12:49,531 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:12:49,538 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:12:49,547 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:12:49,588 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:12:49,591 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:12:49,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:12:49,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:12:49,593 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:12:49,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2023-10-12 17:12:49,596 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-10-12 17:12:49,604 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:12:49,604 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:12:49,604 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:12:49,605 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:12:49,605 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:12:49,606 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:12:49,606 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:12:49,616 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-10-12 17:12:49,621 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2023-10-12 17:12:49,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:12:49,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:12:49,622 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:12:49,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2023-10-12 17:12:49,626 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-10-12 17:12:49,633 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:12:49,633 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:12:49,633 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:12:49,633 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:12:49,633 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:12:49,634 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:12:49,634 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:12:49,649 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:12:49,651 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-10-12 17:12:49,651 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-10-12 17:12:49,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:12:49,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:12:49,654 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:12:49,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2023-10-12 17:12:49,701 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:12:49,702 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-10-12 17:12:49,702 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:12:49,702 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(i1, n) = -1*i1 + 1*n Supporting invariants [] [2023-10-12 17:12:49,708 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2023-10-12 17:12:49,710 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:12:49,731 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:12:49,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:12:49,739 INFO L262 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:12:49,739 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:12:49,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:12:49,748 WARN L260 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2023-10-12 17:12:49,748 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:12:49,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-10-12 17:12:49,776 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-10-12 17:12:49,778 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand currently 15 states, but on-demand construction may add more states Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-10-12 17:12:49,817 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand currently 15 states, but on-demand construction may add more states. Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 38 states and 88 transitions. Complement of second has 7 states. [2023-10-12 17:12:49,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2023-10-12 17:12:49,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-10-12 17:12:49,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2023-10-12 17:12:49,823 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 2 letters. Loop has 2 letters. [2023-10-12 17:12:49,823 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:12:49,823 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 4 letters. Loop has 2 letters. [2023-10-12 17:12:49,824 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:12:49,824 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 2 letters. Loop has 4 letters. [2023-10-12 17:12:49,824 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:12:49,824 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 38 states and 88 transitions. [2023-10-12 17:12:49,826 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 6 [2023-10-12 17:12:49,829 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 38 states to 25 states and 62 transitions. [2023-10-12 17:12:49,830 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2023-10-12 17:12:49,830 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2023-10-12 17:12:49,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 62 transitions. [2023-10-12 17:12:49,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-10-12 17:12:49,830 INFO L219 hiAutomatonCegarLoop]: Abstraction has 25 states and 62 transitions. [2023-10-12 17:12:49,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states and 62 transitions. [2023-10-12 17:12:49,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 19. [2023-10-12 17:12:49,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-10-12 17:12:49,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 49 transitions. [2023-10-12 17:12:49,847 INFO L241 hiAutomatonCegarLoop]: Abstraction has 19 states and 49 transitions. [2023-10-12 17:12:49,847 INFO L430 stractBuchiCegarLoop]: Abstraction has 19 states and 49 transitions. [2023-10-12 17:12:49,847 INFO L337 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-10-12 17:12:49,847 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 49 transitions. [2023-10-12 17:12:49,848 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 6 [2023-10-12 17:12:49,848 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-10-12 17:12:49,848 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-10-12 17:12:49,848 INFO L149 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-10-12 17:12:49,848 INFO L150 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-10-12 17:12:49,848 INFO L748 eck$LassoCheckResult]: Stem: 155#[$Ultimate##0]don't care [88] $Ultimate##0-->L44: Formula: (and (= v_i1_14 v_k2_13) (<= 0 v_m_9) (= v_i1_14 v_i2_10) (= v_i1_14 0) (= v_i1_14 v_k1_13)) InVars {m=v_m_9, i1=v_i1_14, i2=v_i2_10, k1=v_k1_13, k2=v_k2_13} OutVars{m=v_m_9, i1=v_i1_14, i2=v_i2_10, k1=v_k1_13, k2=v_k2_13} AuxVars[] AssignedVars[] 139#[L44]don't care [74] L44-->L20: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0] 141#[L44-1, L20]don't care [83] L20-->L22-1: Formula: (and (< v_i1_8 v_n_7) (= v_j1_6 0)) InVars {n=v_n_7, i1=v_i1_8} OutVars{n=v_n_7, i1=v_i1_8, j1=v_j1_6} AuxVars[] AssignedVars[j1] 167#[L44-1, L22-1]don't care [2023-10-12 17:12:49,848 INFO L750 eck$LassoCheckResult]: Loop: 167#[L44-1, L22-1]don't care [89] L22-1-->L22-1: Formula: (and (= v_j1_14 (+ v_j1_15 1)) (= (+ v_k1_16 1) v_k1_15) (< v_j1_15 v_m_11)) InVars {m=v_m_11, k1=v_k1_16, j1=v_j1_15} OutVars{m=v_m_11, k1=v_k1_15, j1=v_j1_14} AuxVars[] AssignedVars[k1, j1] 167#[L44-1, L22-1]don't care [2023-10-12 17:12:49,849 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:12:49,849 INFO L85 PathProgramCache]: Analyzing trace with hash 116736, now seen corresponding path program 1 times [2023-10-12 17:12:49,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:12:49,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622083535] [2023-10-12 17:12:49,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:12:49,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:12:49,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:12:49,853 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:12:49,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:12:49,856 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:12:49,856 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:12:49,856 INFO L85 PathProgramCache]: Analyzing trace with hash 120, now seen corresponding path program 1 times [2023-10-12 17:12:49,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:12:49,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342517643] [2023-10-12 17:12:49,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:12:49,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:12:49,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:12:49,860 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:12:49,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:12:49,863 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:12:49,863 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:12:49,863 INFO L85 PathProgramCache]: Analyzing trace with hash 3618905, now seen corresponding path program 1 times [2023-10-12 17:12:49,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:12:49,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487667826] [2023-10-12 17:12:49,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:12:49,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:12:49,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:12:49,869 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:12:49,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:12:49,874 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:12:49,888 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:12:49,888 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:12:49,889 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:12:49,889 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:12:49,889 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-10-12 17:12:49,889 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:12:49,889 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:12:49,889 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:12:49,889 INFO L133 ssoRankerPreferences]: Filename of dumped script: clever.wvr.bpl_BEv2_Iteration2_Loop [2023-10-12 17:12:49,889 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:12:49,889 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:12:49,890 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:12:49,894 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:12:49,912 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:12:49,912 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-10-12 17:12:49,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:12:49,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:12:49,913 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:12:49,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2023-10-12 17:12:49,917 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:12:49,917 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:12:49,961 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2023-10-12 17:12:49,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:12:49,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:12:49,977 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:12:49,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2023-10-12 17:12:49,994 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:12:49,994 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:12:50,084 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-10-12 17:12:50,088 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2023-10-12 17:12:50,088 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:12:50,088 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:12:50,088 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:12:50,088 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:12:50,088 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:12:50,088 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:12:50,088 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:12:50,088 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:12:50,089 INFO L133 ssoRankerPreferences]: Filename of dumped script: clever.wvr.bpl_BEv2_Iteration2_Loop [2023-10-12 17:12:50,089 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:12:50,089 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:12:50,089 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:12:50,097 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:12:50,124 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:12:50,125 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:12:50,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:12:50,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:12:50,127 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:12:50,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2023-10-12 17:12:50,163 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-10-12 17:12:50,172 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:12:50,172 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:12:50,173 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:12:50,173 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:12:50,173 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:12:50,174 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:12:50,174 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:12:50,185 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:12:50,188 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-10-12 17:12:50,189 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-10-12 17:12:50,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:12:50,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:12:50,191 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:12:50,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2023-10-12 17:12:50,193 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:12:50,193 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-10-12 17:12:50,193 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:12:50,193 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(m, j1) = 1*m - 1*j1 Supporting invariants [] [2023-10-12 17:12:50,196 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2023-10-12 17:12:50,197 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:12:50,222 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:12:50,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:12:50,228 INFO L262 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:12:50,229 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:12:50,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:12:50,243 WARN L260 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2023-10-12 17:12:50,244 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:12:50,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-10-12 17:12:50,245 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2023-10-12 17:12:50,245 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 49 transitions. cyclomatic complexity: 39 Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-10-12 17:12:50,310 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 49 transitions. cyclomatic complexity: 39. Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 68 states and 162 transitions. Complement of second has 5 states. [2023-10-12 17:12:50,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-10-12 17:12:50,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-10-12 17:12:50,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 20 transitions. [2023-10-12 17:12:50,311 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 20 transitions. Stem has 3 letters. Loop has 1 letters. [2023-10-12 17:12:50,311 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:12:50,311 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 20 transitions. Stem has 4 letters. Loop has 1 letters. [2023-10-12 17:12:50,311 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:12:50,311 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 20 transitions. Stem has 3 letters. Loop has 2 letters. [2023-10-12 17:12:50,311 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:12:50,312 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 68 states and 162 transitions. [2023-10-12 17:12:50,319 INFO L131 ngComponentsAnalysis]: Automaton has 13 accepting balls. 13 [2023-10-12 17:12:50,320 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 68 states to 49 states and 123 transitions. [2023-10-12 17:12:50,320 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2023-10-12 17:12:50,320 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2023-10-12 17:12:50,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 123 transitions. [2023-10-12 17:12:50,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-10-12 17:12:50,320 INFO L219 hiAutomatonCegarLoop]: Abstraction has 49 states and 123 transitions. [2023-10-12 17:12:50,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states and 123 transitions. [2023-10-12 17:12:50,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 33. [2023-10-12 17:12:50,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 33 states have (on average 2.6666666666666665) internal successors, (88), 32 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-10-12 17:12:50,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 88 transitions. [2023-10-12 17:12:50,343 INFO L241 hiAutomatonCegarLoop]: Abstraction has 33 states and 88 transitions. [2023-10-12 17:12:50,343 INFO L430 stractBuchiCegarLoop]: Abstraction has 33 states and 88 transitions. [2023-10-12 17:12:50,343 INFO L337 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-10-12 17:12:50,344 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 33 states and 88 transitions. [2023-10-12 17:12:50,345 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 8 [2023-10-12 17:12:50,345 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-10-12 17:12:50,345 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-10-12 17:12:50,345 INFO L149 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-10-12 17:12:50,346 INFO L150 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-10-12 17:12:50,346 INFO L748 eck$LassoCheckResult]: Stem: 292#[$Ultimate##0]don't care [88] $Ultimate##0-->L44: Formula: (and (= v_i1_14 v_k2_13) (<= 0 v_m_9) (= v_i1_14 v_i2_10) (= v_i1_14 0) (= v_i1_14 v_k1_13)) InVars {m=v_m_9, i1=v_i1_14, i2=v_i2_10, k1=v_k1_13, k2=v_k2_13} OutVars{m=v_m_9, i1=v_i1_14, i2=v_i2_10, k1=v_k1_13, k2=v_k2_13} AuxVars[] AssignedVars[] 276#[L44]don't care [74] L44-->L20: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0] 278#[L44-1, L20]don't care [77] L44-1-->L33: Formula: (and (= 2 v_thread2Thread1of1ForFork1_thidvar1_2) (= 2 v_thread2Thread1of1ForFork1_thidvar0_2)) InVars {} OutVars{thread2Thread1of1ForFork1_thidvar0=v_thread2Thread1of1ForFork1_thidvar0_2, thread2Thread1of1ForFork1_thidvar1=v_thread2Thread1of1ForFork1_thidvar1_2} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_thidvar0, thread2Thread1of1ForFork1_thidvar1] 294#[L20, L33, L45]don't care [2023-10-12 17:12:50,346 INFO L750 eck$LassoCheckResult]: Loop: 294#[L20, L33, L45]don't care [91] L33-->L33: Formula: (and (= v_i2_12 (+ v_i2_13 1)) (= (+ v_m_13 v_k2_16) v_k2_15) (< v_i2_13 v_n_13)) InVars {n=v_n_13, m=v_m_13, i2=v_i2_13, k2=v_k2_16} OutVars{n=v_n_13, m=v_m_13, i2=v_i2_12, k2=v_k2_15} AuxVars[] AssignedVars[i2, k2] 294#[L20, L33, L45]don't care [2023-10-12 17:12:50,346 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:12:50,346 INFO L85 PathProgramCache]: Analyzing trace with hash 116730, now seen corresponding path program 1 times [2023-10-12 17:12:50,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:12:50,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919183510] [2023-10-12 17:12:50,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:12:50,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:12:50,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:12:50,353 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:12:50,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:12:50,362 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:12:50,362 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:12:50,362 INFO L85 PathProgramCache]: Analyzing trace with hash 122, now seen corresponding path program 1 times [2023-10-12 17:12:50,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:12:50,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229823368] [2023-10-12 17:12:50,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:12:50,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:12:50,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:12:50,369 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:12:50,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:12:50,371 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:12:50,371 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:12:50,371 INFO L85 PathProgramCache]: Analyzing trace with hash 3618721, now seen corresponding path program 1 times [2023-10-12 17:12:50,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:12:50,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46602734] [2023-10-12 17:12:50,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:12:50,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:12:50,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:12:50,396 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:12:50,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:12:50,400 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:12:50,429 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:12:50,429 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:12:50,429 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:12:50,429 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:12:50,430 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-10-12 17:12:50,430 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:12:50,430 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:12:50,430 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:12:50,430 INFO L133 ssoRankerPreferences]: Filename of dumped script: clever.wvr.bpl_BEv2_Iteration3_Loop [2023-10-12 17:12:50,430 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:12:50,430 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:12:50,430 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:12:50,433 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:12:50,464 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:12:50,464 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-10-12 17:12:50,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:12:50,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:12:50,465 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:12:50,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2023-10-12 17:12:50,482 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:12:50,483 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:12:50,505 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-10-12 17:12:50,505 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {m=0, k2=0} Honda state: {m=0, k2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-10-12 17:12:50,508 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2023-10-12 17:12:50,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:12:50,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:12:50,537 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:12:50,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2023-10-12 17:12:50,541 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:12:50,541 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:12:50,550 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2023-10-12 17:12:50,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:12:50,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:12:50,554 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:12:50,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2023-10-12 17:12:50,558 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:12:50,558 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:12:50,651 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-10-12 17:12:50,653 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2023-10-12 17:12:50,654 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:12:50,654 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:12:50,654 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:12:50,654 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:12:50,654 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:12:50,654 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:12:50,654 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:12:50,654 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:12:50,654 INFO L133 ssoRankerPreferences]: Filename of dumped script: clever.wvr.bpl_BEv2_Iteration3_Loop [2023-10-12 17:12:50,654 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:12:50,654 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:12:50,655 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:12:50,658 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:12:50,679 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:12:50,679 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:12:50,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:12:50,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:12:50,680 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:12:50,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2023-10-12 17:12:50,683 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-10-12 17:12:50,689 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:12:50,689 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:12:50,689 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:12:50,689 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:12:50,689 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:12:50,690 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:12:50,690 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:12:50,712 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-10-12 17:12:50,717 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2023-10-12 17:12:50,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:12:50,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:12:50,718 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:12:50,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2023-10-12 17:12:50,733 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-10-12 17:12:50,740 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:12:50,740 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:12:50,740 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:12:50,740 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:12:50,740 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:12:50,741 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:12:50,741 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:12:50,755 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:12:50,757 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2023-10-12 17:12:50,757 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-10-12 17:12:50,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:12:50,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:12:50,773 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:12:50,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2023-10-12 17:12:50,774 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:12:50,774 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-10-12 17:12:50,774 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:12:50,774 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(i2, n) = -1*i2 + 1*n Supporting invariants [] [2023-10-12 17:12:50,799 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2023-10-12 17:12:50,800 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:12:50,809 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:12:50,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:12:50,815 INFO L262 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:12:50,815 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:12:50,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:12:50,821 WARN L260 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2023-10-12 17:12:50,821 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:12:50,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-10-12 17:12:50,822 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2023-10-12 17:12:50,822 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 33 states and 88 transitions. cyclomatic complexity: 72 Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-10-12 17:12:50,841 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 33 states and 88 transitions. cyclomatic complexity: 72. Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 69 states and 184 transitions. Complement of second has 4 states. [2023-10-12 17:12:50,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-10-12 17:12:50,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-10-12 17:12:50,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 21 transitions. [2023-10-12 17:12:50,842 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 21 transitions. Stem has 3 letters. Loop has 1 letters. [2023-10-12 17:12:50,843 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:12:50,843 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 21 transitions. Stem has 4 letters. Loop has 1 letters. [2023-10-12 17:12:50,843 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:12:50,843 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 21 transitions. Stem has 3 letters. Loop has 2 letters. [2023-10-12 17:12:50,843 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:12:50,843 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 69 states and 184 transitions. [2023-10-12 17:12:50,845 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 3 [2023-10-12 17:12:50,846 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 69 states to 35 states and 96 transitions. [2023-10-12 17:12:50,846 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2023-10-12 17:12:50,846 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2023-10-12 17:12:50,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 96 transitions. [2023-10-12 17:12:50,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-10-12 17:12:50,846 INFO L219 hiAutomatonCegarLoop]: Abstraction has 35 states and 96 transitions. [2023-10-12 17:12:50,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 96 transitions. [2023-10-12 17:12:50,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2023-10-12 17:12:50,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 32 states have (on average 2.875) internal successors, (92), 31 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-10-12 17:12:50,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 92 transitions. [2023-10-12 17:12:50,849 INFO L241 hiAutomatonCegarLoop]: Abstraction has 32 states and 92 transitions. [2023-10-12 17:12:50,849 INFO L430 stractBuchiCegarLoop]: Abstraction has 32 states and 92 transitions. [2023-10-12 17:12:50,849 INFO L337 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-10-12 17:12:50,849 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 32 states and 92 transitions. [2023-10-12 17:12:50,850 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 3 [2023-10-12 17:12:50,850 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-10-12 17:12:50,850 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-10-12 17:12:50,850 INFO L149 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2023-10-12 17:12:50,850 INFO L150 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-10-12 17:12:50,850 INFO L748 eck$LassoCheckResult]: Stem: 463#[$Ultimate##0]don't care [88] $Ultimate##0-->L44: Formula: (and (= v_i1_14 v_k2_13) (<= 0 v_m_9) (= v_i1_14 v_i2_10) (= v_i1_14 0) (= v_i1_14 v_k1_13)) InVars {m=v_m_9, i1=v_i1_14, i2=v_i2_10, k1=v_k1_13, k2=v_k2_13} OutVars{m=v_m_9, i1=v_i1_14, i2=v_i2_10, k1=v_k1_13, k2=v_k2_13} AuxVars[] AssignedVars[] 441#[L44]don't care [74] L44-->L20: Formula: (= v_thread1Thread1of1ForFork0_thidvar0_2 1) InVars {} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_2} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_thidvar0] 443#[L44-1, L20]don't care [83] L20-->L22-1: Formula: (and (< v_i1_8 v_n_7) (= v_j1_6 0)) InVars {n=v_n_7, i1=v_i1_8} OutVars{n=v_n_7, i1=v_i1_8, j1=v_j1_6} AuxVars[] AssignedVars[j1] 481#[L44-1, L22-1]don't care [87] L22-1-->L20: Formula: (and (= (+ v_i1_11 1) v_i1_10) (<= v_m_7 v_j1_12)) InVars {m=v_m_7, i1=v_i1_11, j1=v_j1_12} OutVars{m=v_m_7, i1=v_i1_10, j1=v_j1_12} AuxVars[] AssignedVars[i1] 483#[L44-1, L20]don't care [83] L20-->L22-1: Formula: (and (< v_i1_8 v_n_7) (= v_j1_6 0)) InVars {n=v_n_7, i1=v_i1_8} OutVars{n=v_n_7, i1=v_i1_8, j1=v_j1_6} AuxVars[] AssignedVars[j1] 477#[L44-1, L22-1]don't care [2023-10-12 17:12:50,851 INFO L750 eck$LassoCheckResult]: Loop: 477#[L44-1, L22-1]don't care [89] L22-1-->L22-1: Formula: (and (= v_j1_14 (+ v_j1_15 1)) (= (+ v_k1_16 1) v_k1_15) (< v_j1_15 v_m_11)) InVars {m=v_m_11, k1=v_k1_16, j1=v_j1_15} OutVars{m=v_m_11, k1=v_k1_15, j1=v_j1_14} AuxVars[] AssignedVars[k1, j1] 477#[L44-1, L22-1]don't care [2023-10-12 17:12:50,851 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:12:50,851 INFO L85 PathProgramCache]: Analyzing trace with hash 112186076, now seen corresponding path program 2 times [2023-10-12 17:12:50,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:12:50,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272845270] [2023-10-12 17:12:50,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:12:50,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:12:50,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:12:50,856 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:12:50,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:12:50,860 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:12:50,861 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:12:50,861 INFO L85 PathProgramCache]: Analyzing trace with hash 120, now seen corresponding path program 2 times [2023-10-12 17:12:50,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:12:50,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603550303] [2023-10-12 17:12:50,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:12:50,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:12:50,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:12:50,863 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-10-12 17:12:50,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-10-12 17:12:50,865 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-10-12 17:12:50,865 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:12:50,866 INFO L85 PathProgramCache]: Analyzing trace with hash -817198851, now seen corresponding path program 1 times [2023-10-12 17:12:50,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-10-12 17:12:50,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187908928] [2023-10-12 17:12:50,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:12:50,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-10-12 17:12:50,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:12:50,962 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-10-12 17:12:50,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-10-12 17:12:50,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187908928] [2023-10-12 17:12:50,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187908928] provided 0 perfect and 1 imperfect interpolant sequences [2023-10-12 17:12:50,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411906893] [2023-10-12 17:12:50,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-10-12 17:12:50,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-10-12 17:12:50,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:12:51,096 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-10-12 17:12:51,098 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-10-12 17:12:51,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:12:51,144 INFO L262 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 4 conjunts are in the unsatisfiable core [2023-10-12 17:12:51,145 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:12:51,204 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-10-12 17:12:51,204 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-10-12 17:12:51,242 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-10-12 17:12:51,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [411906893] provided 0 perfect and 2 imperfect interpolant sequences [2023-10-12 17:12:51,243 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-10-12 17:12:51,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-10-12 17:12:51,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043180957] [2023-10-12 17:12:51,244 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-10-12 17:12:51,262 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:12:51,262 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:12:51,262 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:12:51,262 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:12:51,263 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-10-12 17:12:51,263 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:12:51,263 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:12:51,263 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:12:51,263 INFO L133 ssoRankerPreferences]: Filename of dumped script: clever.wvr.bpl_BEv2_Iteration4_Loop [2023-10-12 17:12:51,263 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:12:51,263 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:12:51,264 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:12:51,267 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:12:51,314 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:12:51,314 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-10-12 17:12:51,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:12:51,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:12:51,317 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:12:51,360 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:12:51,360 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:12:51,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2023-10-12 17:12:51,386 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2023-10-12 17:12:51,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:12:51,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:12:51,388 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:12:51,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2023-10-12 17:12:51,392 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:12:51,392 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:12:51,412 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-10-12 17:12:51,412 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {k1=0} Honda state: {k1=0} Generalized eigenvectors: [{k1=1}, {k1=3}, {k1=-3}] Lambdas: [1, 2, 1] Nus: [0, 1] [2023-10-12 17:12:51,417 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2023-10-12 17:12:51,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:12:51,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:12:51,418 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:12:51,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2023-10-12 17:12:51,434 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-10-12 17:12:51,434 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:12:51,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2023-10-12 17:12:51,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:12:51,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:12:51,445 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:12:51,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2023-10-12 17:12:51,448 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-10-12 17:12:51,448 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-10-12 17:12:51,535 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-10-12 17:12:51,538 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2023-10-12 17:12:51,538 INFO L210 LassoAnalysis]: Preferences: [2023-10-12 17:12:51,539 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-10-12 17:12:51,539 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-10-12 17:12:51,539 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-10-12 17:12:51,539 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-10-12 17:12:51,539 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:12:51,539 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-10-12 17:12:51,539 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-10-12 17:12:51,539 INFO L133 ssoRankerPreferences]: Filename of dumped script: clever.wvr.bpl_BEv2_Iteration4_Loop [2023-10-12 17:12:51,539 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-10-12 17:12:51,539 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-10-12 17:12:51,540 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:12:51,545 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-10-12 17:12:51,572 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-10-12 17:12:51,572 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-10-12 17:12:51,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:12:51,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:12:51,574 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:12:51,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2023-10-12 17:12:51,577 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-10-12 17:12:51,583 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:12:51,583 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:12:51,583 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:12:51,583 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:12:51,583 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:12:51,584 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:12:51,584 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:12:51,591 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-10-12 17:12:51,600 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2023-10-12 17:12:51,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:12:51,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:12:51,602 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:12:51,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2023-10-12 17:12:51,605 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-10-12 17:12:51,612 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-10-12 17:12:51,612 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-10-12 17:12:51,612 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-10-12 17:12:51,612 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-10-12 17:12:51,612 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-10-12 17:12:51,613 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-10-12 17:12:51,613 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-10-12 17:12:51,626 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-10-12 17:12:51,631 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-10-12 17:12:51,631 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-10-12 17:12:51,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-10-12 17:12:51,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-10-12 17:12:51,634 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-10-12 17:12:51,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2023-10-12 17:12:51,636 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-10-12 17:12:51,636 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-10-12 17:12:51,636 INFO L513 LassoAnalysis]: Proved termination. [2023-10-12 17:12:51,636 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(j1, m) = -1*j1 + 1*m Supporting invariants [] [2023-10-12 17:12:51,642 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2023-10-12 17:12:51,643 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-10-12 17:12:51,662 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:12:51,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:12:51,670 INFO L262 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:12:51,670 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:12:51,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:12:51,684 WARN L260 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2023-10-12 17:12:51,684 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:12:51,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-10-12 17:12:51,685 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2023-10-12 17:12:51,685 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 32 states and 92 transitions. cyclomatic complexity: 74 Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-10-12 17:12:51,712 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 32 states and 92 transitions. cyclomatic complexity: 74. Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 57 states and 152 transitions. Complement of second has 5 states. [2023-10-12 17:12:51,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-10-12 17:12:51,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-10-12 17:12:51,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 16 transitions. [2023-10-12 17:12:51,714 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 16 transitions. Stem has 5 letters. Loop has 1 letters. [2023-10-12 17:12:51,714 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:12:51,714 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-10-12 17:12:51,724 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:12:51,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:12:51,733 INFO L262 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:12:51,733 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:12:51,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:12:51,753 WARN L260 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2023-10-12 17:12:51,753 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:12:51,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-10-12 17:12:51,754 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2023-10-12 17:12:51,754 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 32 states and 92 transitions. cyclomatic complexity: 74 Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-10-12 17:12:51,789 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 32 states and 92 transitions. cyclomatic complexity: 74. Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 57 states and 152 transitions. Complement of second has 5 states. [2023-10-12 17:12:51,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-10-12 17:12:51,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-10-12 17:12:51,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 16 transitions. [2023-10-12 17:12:51,791 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 16 transitions. Stem has 5 letters. Loop has 1 letters. [2023-10-12 17:12:51,791 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:12:51,791 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-10-12 17:12:51,800 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-10-12 17:12:51,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:12:51,806 INFO L262 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 2 conjunts are in the unsatisfiable core [2023-10-12 17:12:51,806 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:12:51,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-10-12 17:12:51,815 WARN L260 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2023-10-12 17:12:51,815 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-10-12 17:12:51,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-10-12 17:12:51,816 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2023-10-12 17:12:51,817 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 32 states and 92 transitions. cyclomatic complexity: 74 Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-10-12 17:12:51,844 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 32 states and 92 transitions. cyclomatic complexity: 74. Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 62 states and 161 transitions. Complement of second has 4 states. [2023-10-12 17:12:51,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-10-12 17:12:51,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-10-12 17:12:51,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 19 transitions. [2023-10-12 17:12:51,852 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 19 transitions. Stem has 5 letters. Loop has 1 letters. [2023-10-12 17:12:51,852 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:12:51,852 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 19 transitions. Stem has 6 letters. Loop has 1 letters. [2023-10-12 17:12:51,852 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:12:51,852 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 19 transitions. Stem has 5 letters. Loop has 2 letters. [2023-10-12 17:12:51,852 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-10-12 17:12:51,852 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 62 states and 161 transitions. [2023-10-12 17:12:51,855 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-10-12 17:12:51,855 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 62 states to 0 states and 0 transitions. [2023-10-12 17:12:51,855 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-10-12 17:12:51,855 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-10-12 17:12:51,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-10-12 17:12:51,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-10-12 17:12:51,856 INFO L219 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-10-12 17:12:51,856 INFO L241 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-10-12 17:12:51,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-10-12 17:12:51,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-10-12 17:12:51,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-10-12 17:12:51,858 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-10-12 17:12:51,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-10-12 17:12:51,859 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2023-10-12 17:12:51,859 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2023-10-12 17:12:51,859 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-10-12 17:12:51,860 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2023-10-12 17:12:51,872 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-10-12 17:12:51,872 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-10-12 17:12:51,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-10-12 17:12:51,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-10-12 17:12:51,873 INFO L219 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-10-12 17:12:51,873 INFO L241 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-10-12 17:12:51,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-10-12 17:12:51,874 INFO L430 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-10-12 17:12:51,874 INFO L337 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2023-10-12 17:12:51,874 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2023-10-12 17:12:51,874 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-10-12 17:12:51,874 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2023-10-12 17:12:51,883 INFO L201 PluginConnector]: Adding new model clever.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 12.10 05:12:51 BoogieIcfgContainer [2023-10-12 17:12:51,883 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-10-12 17:12:51,883 INFO L158 Benchmark]: Toolchain (without parser) took 3512.82ms. Allocated memory was 181.4MB in the beginning and 335.5MB in the end (delta: 154.1MB). Free memory was 131.0MB in the beginning and 156.8MB in the end (delta: -25.7MB). Peak memory consumption was 127.2MB. Max. memory is 8.0GB. [2023-10-12 17:12:51,884 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.21ms. Allocated memory is still 181.4MB. Free memory is still 132.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-10-12 17:12:51,884 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.53ms. Allocated memory is still 181.4MB. Free memory was 130.9MB in the beginning and 129.4MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-10-12 17:12:51,884 INFO L158 Benchmark]: Boogie Preprocessor took 30.83ms. Allocated memory is still 181.4MB. Free memory was 129.4MB in the beginning and 128.3MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-10-12 17:12:51,885 INFO L158 Benchmark]: RCFGBuilder took 265.87ms. Allocated memory was 181.4MB in the beginning and 335.5MB in the end (delta: 154.1MB). Free memory was 128.3MB in the beginning and 303.6MB in the end (delta: -175.3MB). Peak memory consumption was 14.4MB. Max. memory is 8.0GB. [2023-10-12 17:12:51,885 INFO L158 Benchmark]: BuchiAutomizer took 3168.29ms. Allocated memory is still 335.5MB. Free memory was 303.6MB in the beginning and 156.8MB in the end (delta: 146.9MB). Peak memory consumption was 146.4MB. Max. memory is 8.0GB. [2023-10-12 17:12:51,886 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.21ms. Allocated memory is still 181.4MB. Free memory is still 132.1MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 35.53ms. Allocated memory is still 181.4MB. Free memory was 130.9MB in the beginning and 129.4MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 30.83ms. Allocated memory is still 181.4MB. Free memory was 129.4MB in the beginning and 128.3MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 265.87ms. Allocated memory was 181.4MB in the beginning and 335.5MB in the end (delta: 154.1MB). Free memory was 128.3MB in the beginning and 303.6MB in the end (delta: -175.3MB). Peak memory consumption was 14.4MB. Max. memory is 8.0GB. * BuchiAutomizer took 3168.29ms. Allocated memory is still 335.5MB. Free memory was 303.6MB in the beginning and 156.8MB in the end (delta: 146.9MB). Peak memory consumption was 146.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (1 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function n + -1 * i1 and consists of 5 locations. One deterministic module has affine ranking function -1 * j1 + m and consists of 3 locations. One deterministic module has affine ranking function -1 * i2 + n and consists of 3 locations. One nondeterministic module has affine ranking function -1 * j1 + m and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 8 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.1s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 2.2s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 25 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 75 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 69 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 129 IncrementalHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 0 mSDtfsCounter, 129 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT3 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital15 mio100 ax100 hnf100 lsp65 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 24ms VariablesStem: 0 VariablesLoop: 1 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 1 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.7s InitialAbstractionConstructionTime: 0.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.2s, 28 PlacesBefore, 17 PlacesAfterwards, 24 TransitionsBefore, 13 TransitionsAfterwards, 118 CoEnabledTransitionPairs, 2 FixpointIterations, 4 TrivialSequentialCompositions, 8 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 12 TotalNumberOfCompositions, 72 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 72, independent: 72, independent conditional: 0, independent unconditional: 72, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 64, independent: 64, independent conditional: 0, independent unconditional: 64, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 64, independent: 64, independent conditional: 0, independent unconditional: 64, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 72, independent: 8, independent conditional: 0, independent unconditional: 8, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 64, unknown conditional: 0, unknown unconditional: 64] , Statistics on independence cache: Total cache size (in pairs): 8, Positive cache size: 8, Positive conditional cache size: 0, Positive unconditional cache size: 8, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 RESULT: Ultimate proved your program to be correct! [2023-10-12 17:12:51,904 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2023-10-12 17:12:52,096 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-10-12 17:12:52,297 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2023-10-12 17:12:52,498 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2023-10-12 17:12:52,698 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2023-10-12 17:12:52,901 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...