/root/.sdkman/candidates/java/current/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Termination-32bit-Automizer_Default.epf --buchiautomizer.automaton.type.for.concurrent.programs BUCHI_AUTOMATON -tc ../../../trunk/examples/toolchains/BuchiAutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-name-comparator-subst.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-?-9ecb849-m [2024-02-09 23:13:35,979 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-09 23:13:36,049 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Termination-32bit-Automizer_Default.epf [2024-02-09 23:13:36,055 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-09 23:13:36,055 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-09 23:13:36,056 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.Only consider context switches at boundaries of atomic blocks [2024-02-09 23:13:36,082 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-09 23:13:36,083 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-09 23:13:36,083 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-09 23:13:36,084 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-09 23:13:36,084 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-09 23:13:36,084 INFO L153 SettingsManager]: * Use SBE=true [2024-02-09 23:13:36,084 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-02-09 23:13:36,087 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-02-09 23:13:36,087 INFO L153 SettingsManager]: * Use old map elimination=false [2024-02-09 23:13:36,088 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-02-09 23:13:36,088 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-02-09 23:13:36,088 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-02-09 23:13:36,088 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-09 23:13:36,089 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-02-09 23:13:36,089 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-09 23:13:36,089 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-09 23:13:36,090 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-09 23:13:36,090 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-09 23:13:36,090 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-02-09 23:13:36,090 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-02-09 23:13:36,090 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-02-09 23:13:36,090 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-02-09 23:13:36,091 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-09 23:13:36,091 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-09 23:13:36,091 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-02-09 23:13:36,092 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-09 23:13:36,092 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-09 23:13:36,092 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-09 23:13:36,092 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-09 23:13:36,092 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-09 23:13:36,092 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-09 23:13:36,093 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-02-09 23:13:36,093 INFO L153 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: Automaton type for concurrent programs -> BUCHI_AUTOMATON [2024-02-09 23:13:36,368 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-09 23:13:36,392 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-09 23:13:36,394 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-09 23:13:36,395 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-09 23:13:36,396 INFO L274 PluginConnector]: CDTParser initialized [2024-02-09 23:13:36,397 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-name-comparator-subst.wvr.c [2024-02-09 23:13:37,416 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-09 23:13:37,596 INFO L384 CDTParser]: Found 1 translation units. [2024-02-09 23:13:37,597 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-name-comparator-subst.wvr.c [2024-02-09 23:13:37,602 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dddf86783/5a8dfe3d66fb48c88e642c46e7d210a9/FLAG87d8660f5 [2024-02-09 23:13:37,612 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dddf86783/5a8dfe3d66fb48c88e642c46e7d210a9 [2024-02-09 23:13:37,614 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-09 23:13:37,614 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-09 23:13:37,616 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-09 23:13:37,616 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-09 23:13:37,620 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-09 23:13:37,620 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.02 11:13:37" (1/1) ... [2024-02-09 23:13:37,621 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@efeb249 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 11:13:37, skipping insertion in model container [2024-02-09 23:13:37,621 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.02 11:13:37" (1/1) ... [2024-02-09 23:13:37,640 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-02-09 23:13:37,769 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-09 23:13:37,781 INFO L202 MainTranslator]: Completed pre-run [2024-02-09 23:13:37,803 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-09 23:13:37,815 INFO L206 MainTranslator]: Completed translation [2024-02-09 23:13:37,815 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 11:13:37 WrapperNode [2024-02-09 23:13:37,815 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-09 23:13:37,816 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-09 23:13:37,816 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-09 23:13:37,816 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-09 23:13:37,823 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 11:13:37" (1/1) ... [2024-02-09 23:13:37,830 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 11:13:37" (1/1) ... [2024-02-09 23:13:37,851 INFO L138 Inliner]: procedures = 26, calls = 45, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 299 [2024-02-09 23:13:37,852 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-09 23:13:37,852 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-09 23:13:37,853 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-09 23:13:37,853 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-09 23:13:37,859 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 11:13:37" (1/1) ... [2024-02-09 23:13:37,860 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 11:13:37" (1/1) ... [2024-02-09 23:13:37,862 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 11:13:37" (1/1) ... [2024-02-09 23:13:37,863 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 11:13:37" (1/1) ... [2024-02-09 23:13:37,874 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 11:13:37" (1/1) ... [2024-02-09 23:13:37,877 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 11:13:37" (1/1) ... [2024-02-09 23:13:37,879 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 11:13:37" (1/1) ... [2024-02-09 23:13:37,880 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 11:13:37" (1/1) ... [2024-02-09 23:13:37,882 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-09 23:13:37,883 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-09 23:13:37,883 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-09 23:13:37,883 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-09 23:13:37,884 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 11:13:37" (1/1) ... [2024-02-09 23:13:37,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-02-09 23:13:37,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-09 23:13:37,923 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) [2024-02-09 23:13:37,935 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 [2024-02-09 23:13:37,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-09 23:13:37,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-09 23:13:37,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-02-09 23:13:37,965 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-02-09 23:13:37,965 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-02-09 23:13:37,965 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-02-09 23:13:37,966 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-02-09 23:13:37,966 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-02-09 23:13:37,966 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-02-09 23:13:37,966 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-02-09 23:13:37,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-02-09 23:13:37,966 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-02-09 23:13:37,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-09 23:13:37,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-09 23:13:37,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-09 23:13:37,967 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-09 23:13:38,054 INFO L236 CfgBuilder]: Building ICFG [2024-02-09 23:13:38,056 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-09 23:13:38,469 INFO L277 CfgBuilder]: Performing block encoding [2024-02-09 23:13:38,480 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-09 23:13:38,480 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2024-02-09 23:13:38,483 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.02 11:13:38 BoogieIcfgContainer [2024-02-09 23:13:38,483 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-09 23:13:38,483 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-02-09 23:13:38,483 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-02-09 23:13:38,486 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-02-09 23:13:38,487 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-02-09 23:13:38,487 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 09.02 11:13:37" (1/3) ... [2024-02-09 23:13:38,488 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4021f388 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 09.02 11:13:38, skipping insertion in model container [2024-02-09 23:13:38,488 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-02-09 23:13:38,488 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 11:13:37" (2/3) ... [2024-02-09 23:13:38,488 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4021f388 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 09.02 11:13:38, skipping insertion in model container [2024-02-09 23:13:38,488 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-02-09 23:13:38,489 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.02 11:13:38" (3/3) ... [2024-02-09 23:13:38,490 INFO L332 chiAutomizerObserver]: Analyzing ICFG chl-name-comparator-subst.wvr.c [2024-02-09 23:13:38,595 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-02-09 23:13:38,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 358 places, 377 transitions, 775 flow [2024-02-09 23:13:38,753 INFO L124 PetriNetUnfolderBase]: 26/371 cut-off events. [2024-02-09 23:13:38,753 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-02-09 23:13:38,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 384 conditions, 371 events. 26/371 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 901 event pairs, 0 based on Foata normal form. 0/345 useless extension candidates. Maximal degree in co-relation 271. Up to 2 conditions per place. [2024-02-09 23:13:38,764 INFO L82 GeneralOperation]: Start removeDead. Operand has 358 places, 377 transitions, 775 flow [2024-02-09 23:13:38,783 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 355 places, 371 transitions, 760 flow [2024-02-09 23:13:38,794 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2024-02-09 23:13:38,794 INFO L304 stractBuchiCegarLoop]: Hoare is false [2024-02-09 23:13:38,794 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-02-09 23:13:38,794 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-02-09 23:13:38,794 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-02-09 23:13:38,794 INFO L308 stractBuchiCegarLoop]: Difference is false [2024-02-09 23:13:38,794 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-02-09 23:13:38,794 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-02-09 23:13:38,796 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 0 states, but on-demand construction may add more states [2024-02-09 23:14:46,514 INFO L131 ngComponentsAnalysis]: Automaton has 24575 accepting balls. 727467 [2024-02-09 23:14:46,514 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-02-09 23:14:46,515 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-02-09 23:14:46,539 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-09 23:14:46,539 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2024-02-09 23:14:46,539 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-02-09 23:14:46,539 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 1086150 states, but on-demand construction may add more states