./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label44+token_ring.02.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label44+token_ring.02.cil-1.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8d5f2743e51cbbe46f8de63e434497edb332f77d30ade744101224af0fe29fdc --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 05:19:39,795 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 05:19:39,864 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 05:19:39,868 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 05:19:39,869 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 05:19:39,886 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 05:19:39,887 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 05:19:39,887 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 05:19:39,888 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 05:19:39,888 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 05:19:39,889 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 05:19:39,889 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 05:19:39,890 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 05:19:39,890 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 05:19:39,890 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 05:19:39,891 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 05:19:39,891 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 05:19:39,891 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 05:19:39,891 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 05:19:39,891 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 05:19:39,891 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 05:19:39,892 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 05:19:39,892 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 05:19:39,892 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 05:19:39,892 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 05:19:39,892 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 05:19:39,892 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 05:19:39,892 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 05:19:39,892 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 05:19:39,892 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 05:19:39,892 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 05:19:39,893 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 05:19:39,893 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 05:19:39,893 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 05:19:39,893 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 05:19:39,894 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 05:19:39,894 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 05:19:39,894 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 05:19:39,894 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 05:19:39,894 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 05:19:39,894 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 05:19:39,894 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 05:19:39,894 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 05:19:39,894 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 05:19:39,894 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 05:19:39,894 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 05:19:39,894 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 05:19:39,894 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 05:19:39,894 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d5f2743e51cbbe46f8de63e434497edb332f77d30ade744101224af0fe29fdc [2025-01-09 05:19:40,173 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 05:19:40,181 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 05:19:40,183 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 05:19:40,184 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 05:19:40,184 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 05:19:40,185 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label44+token_ring.02.cil-1.c [2025-01-09 05:19:41,675 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f1c08bd63/4cb7083ed43b4a7f8ec7241aeda22f02/FLAG2f2292a3a [2025-01-09 05:19:41,708 ERROR L? ?]: Error during toolchain job processing: java.lang.NullPointerException: Cannot invoke "String.equalsIgnoreCase(String)" because "kindStr" is null at org.eclipse.cdt.internal.core.model.PathEntry.kindFromString(PathEntry.java:80) at org.eclipse.cdt.internal.core.model.DefaultPathEntryStore.decodePathEntry(DefaultPathEntryStore.java:127) at org.eclipse.cdt.internal.core.model.DefaultPathEntryStore.getRawPathEntries(DefaultPathEntryStore.java:97) at org.eclipse.cdt.internal.core.model.PathEntryStoreProxy.getRawPathEntries(PathEntryStoreProxy.java:102) at org.eclipse.cdt.internal.core.model.PathEntryManager.getRawPathEntries(PathEntryManager.java:666) at org.eclipse.cdt.core.model.CoreModel.getRawPathEntries(CoreModel.java:937) at org.eclipse.cdt.core.model.CoreModel.oldIsScannerInformationEmpty(CoreModel.java:1307) at org.eclipse.cdt.core.model.CoreModel.isScannerInformationEmpty(CoreModel.java:1252) at org.eclipse.cdt.internal.core.pdom.indexer.ProjectIndexerInputAdapter.isFileBuildConfigured(ProjectIndexerInputAdapter.java:267) at org.eclipse.cdt.internal.core.pdom.AbstractIndexerTask.isRequiredInIndex(AbstractIndexerTask.java:748) at org.eclipse.cdt.internal.core.pdom.AbstractIndexerTask.extractFiles(AbstractIndexerTask.java:667) at org.eclipse.cdt.internal.core.pdom.AbstractIndexerTask.runTask(AbstractIndexerTask.java:558) at org.eclipse.cdt.internal.core.pdom.indexer.PDOMIndexerTask.run(PDOMIndexerTask.java:164) at org.eclipse.cdt.internal.core.pdom.PDOMIndexerJob.run(PDOMIndexerJob.java:160) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2025-01-09 05:19:42,380 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 05:19:42,381 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label44+token_ring.02.cil-1.c [2025-01-09 05:19:42,439 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f1c08bd63/4cb7083ed43b4a7f8ec7241aeda22f02/FLAG2f2292a3a [2025-01-09 05:19:42,453 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f1c08bd63/4cb7083ed43b4a7f8ec7241aeda22f02 [2025-01-09 05:19:42,456 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 05:19:42,457 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 05:19:42,459 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 05:19:42,459 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 05:19:42,462 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 05:19:42,464 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 05:19:42" (1/1) ... [2025-01-09 05:19:42,465 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@635713e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 05:19:42, skipping insertion in model container [2025-01-09 05:19:42,465 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 05:19:42" (1/1) ... [2025-01-09 05:19:42,612 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 05:19:43,729 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label44+token_ring.02.cil-1.c[377340,377353] [2025-01-09 05:19:43,763 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label44+token_ring.02.cil-1.c[383339,383352] [2025-01-09 05:19:43,911 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 05:19:43,926 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 05:19:44,546 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label44+token_ring.02.cil-1.c[377340,377353] [2025-01-09 05:19:44,554 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label44+token_ring.02.cil-1.c[383339,383352] [2025-01-09 05:19:44,568 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 05:19:44,630 INFO L204 MainTranslator]: Completed translation [2025-01-09 05:19:44,632 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 05:19:44 WrapperNode [2025-01-09 05:19:44,634 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 05:19:44,634 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 05:19:44,635 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 05:19:44,635 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 05:19:44,641 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 05:19:44" (1/1) ... [2025-01-09 05:19:44,728 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 05:19:44" (1/1) ... [2025-01-09 05:19:45,095 INFO L138 Inliner]: procedures = 48, calls = 47, calls flagged for inlining = 26, calls inlined = 26, statements flattened = 12615 [2025-01-09 05:19:45,095 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 05:19:45,095 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 05:19:45,096 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 05:19:45,096 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 05:19:45,148 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 05:19:44" (1/1) ... [2025-01-09 05:19:45,148 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 05:19:44" (1/1) ... [2025-01-09 05:19:45,187 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 05:19:44" (1/1) ... [2025-01-09 05:19:45,265 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-01-09 05:19:45,265 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 05:19:44" (1/1) ... [2025-01-09 05:19:45,265 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 05:19:44" (1/1) ... [2025-01-09 05:19:45,379 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 05:19:44" (1/1) ... [2025-01-09 05:19:45,399 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 05:19:44" (1/1) ... [2025-01-09 05:19:45,458 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 05:19:44" (1/1) ... [2025-01-09 05:19:45,530 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 05:19:44" (1/1) ... [2025-01-09 05:19:45,550 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 05:19:44" (1/1) ... [2025-01-09 05:19:45,595 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 05:19:45,596 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 05:19:45,596 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 05:19:45,596 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 05:19:45,597 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 05:19:44" (1/1) ... [2025-01-09 05:19:45,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 05:19:45,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 05:19:45,628 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-09 05:19:45,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-09 05:19:45,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 05:19:45,653 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2025-01-09 05:19:45,653 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2025-01-09 05:19:45,654 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2025-01-09 05:19:45,654 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2025-01-09 05:19:45,654 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2025-01-09 05:19:45,654 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2025-01-09 05:19:45,654 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2025-01-09 05:19:45,654 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2025-01-09 05:19:45,654 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2025-01-09 05:19:45,654 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2025-01-09 05:19:45,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 05:19:45,655 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2025-01-09 05:19:45,655 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2025-01-09 05:19:45,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 05:19:45,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 05:19:45,738 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 05:19:45,739 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 05:19:52,160 INFO L? ?]: Removed 1695 outVars from TransFormulas that were not future-live. [2025-01-09 05:19:52,161 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 05:19:52,261 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 05:19:52,262 INFO L312 CfgBuilder]: Removed 6 assume(true) statements. [2025-01-09 05:19:52,262 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 05:19:52 BoogieIcfgContainer [2025-01-09 05:19:52,262 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 05:19:52,265 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 05:19:52,265 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 05:19:52,269 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 05:19:52,269 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 05:19:42" (1/3) ... [2025-01-09 05:19:52,270 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b743f51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 05:19:52, skipping insertion in model container [2025-01-09 05:19:52,270 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 05:19:44" (2/3) ... [2025-01-09 05:19:52,270 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b743f51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 05:19:52, skipping insertion in model container [2025-01-09 05:19:52,270 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 05:19:52" (3/3) ... [2025-01-09 05:19:52,271 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem05_label44+token_ring.02.cil-1.c [2025-01-09 05:19:52,292 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 05:19:52,294 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem05_label44+token_ring.02.cil-1.c that has 7 procedures, 2313 locations, 1 initial locations, 6 loop locations, and 2 error locations. [2025-01-09 05:19:52,466 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 05:19:52,482 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@bbbf3ea, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 05:19:52,482 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-01-09 05:19:52,506 INFO L276 IsEmpty]: Start isEmpty. Operand has 2313 states, 2289 states have (on average 1.854521625163827) internal successors, (4245), 2291 states have internal predecessors, (4245), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2025-01-09 05:19:52,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-01-09 05:19:52,524 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 05:19:52,525 INFO L218 NwaCegarLoop]: trace 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] [2025-01-09 05:19:52,526 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 05:19:52,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 05:19:52,535 INFO L85 PathProgramCache]: Analyzing trace with hash 96040820, now seen corresponding path program 1 times [2025-01-09 05:19:52,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 05:19:52,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963315504] [2025-01-09 05:19:52,549 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 05:19:52,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 05:19:52,642 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-01-09 05:19:52,658 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-01-09 05:19:52,658 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 05:19:52,659 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 05:19:52,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 05:19:52,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 05:19:52,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963315504] [2025-01-09 05:19:52,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963315504] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 05:19:52,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 05:19:52,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 05:19:52,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051530538] [2025-01-09 05:19:52,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 05:19:52,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 05:19:52,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 05:19:52,885 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 05:19:52,886 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 05:19:52,895 INFO L87 Difference]: Start difference. First operand has 2313 states, 2289 states have (on average 1.854521625163827) internal successors, (4245), 2291 states have internal predecessors, (4245), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-09 05:19:53,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 05:19:53,307 INFO L93 Difference]: Finished difference Result 4742 states and 8733 transitions. [2025-01-09 05:19:53,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 05:19:53,309 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 66 [2025-01-09 05:19:53,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 05:19:53,340 INFO L225 Difference]: With dead ends: 4742 [2025-01-09 05:19:53,348 INFO L226 Difference]: Without dead ends: 2369 [2025-01-09 05:19:53,364 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-01-09 05:19:53,370 INFO L435 NwaCegarLoop]: 4179 mSDtfsCounter, 4324 mSDsluCounter, 8417 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4334 SdHoareTripleChecker+Valid, 12596 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 05:19:53,371 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4334 Valid, 12596 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 05:19:53,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2369 states. [2025-01-09 05:19:53,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2369 to 2360. [2025-01-09 05:19:53,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2360 states, 2318 states have (on average 1.8347713546160482) internal successors, (4253), 2321 states have internal predecessors, (4253), 27 states have call successors, (27), 12 states have call predecessors, (27), 13 states have return successors, (28), 27 states have call predecessors, (28), 27 states have call successors, (28) [2025-01-09 05:19:53,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2360 states to 2360 states and 4308 transitions. [2025-01-09 05:19:53,540 INFO L78 Accepts]: Start accepts. Automaton has 2360 states and 4308 transitions. Word has length 66 [2025-01-09 05:19:53,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 05:19:53,541 INFO L471 AbstractCegarLoop]: Abstraction has 2360 states and 4308 transitions. [2025-01-09 05:19:53,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-09 05:19:53,541 INFO L276 IsEmpty]: Start isEmpty. Operand 2360 states and 4308 transitions. [2025-01-09 05:19:53,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-01-09 05:19:53,543 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 05:19:53,543 INFO L218 NwaCegarLoop]: trace 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] [2025-01-09 05:19:53,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-09 05:19:53,544 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 05:19:53,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 05:19:53,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1265496840, now seen corresponding path program 1 times [2025-01-09 05:19:53,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 05:19:53,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388320179] [2025-01-09 05:19:53,544 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 05:19:53,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 05:19:53,551 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-01-09 05:19:53,557 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-01-09 05:19:53,557 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 05:19:53,557 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 05:19:53,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 05:19:53,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 05:19:53,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388320179] [2025-01-09 05:19:53,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388320179] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 05:19:53,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 05:19:53,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-09 05:19:53,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206364351] [2025-01-09 05:19:53,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 05:19:53,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 05:19:53,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 05:19:53,775 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 05:19:53,776 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 05:19:53,776 INFO L87 Difference]: Start difference. First operand 2360 states and 4308 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-09 05:19:54,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 05:19:54,524 INFO L93 Difference]: Finished difference Result 2729 states and 4854 transitions. [2025-01-09 05:19:54,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 05:19:54,525 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 66 [2025-01-09 05:19:54,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 05:19:54,536 INFO L225 Difference]: With dead ends: 2729 [2025-01-09 05:19:54,537 INFO L226 Difference]: Without dead ends: 2500 [2025-01-09 05:19:54,539 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-01-09 05:19:54,540 INFO L435 NwaCegarLoop]: 4183 mSDtfsCounter, 4247 mSDsluCounter, 12513 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4257 SdHoareTripleChecker+Valid, 16696 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-01-09 05:19:54,540 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4257 Valid, 16696 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-01-09 05:19:54,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2500 states. [2025-01-09 05:19:54,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2500 to 2467. [2025-01-09 05:19:54,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2467 states, 2407 states have (on average 1.8209389281262982) internal successors, (4383), 2411 states have internal predecessors, (4383), 38 states have call successors, (38), 18 states have call predecessors, (38), 20 states have return successors, (42), 39 states have call predecessors, (42), 38 states have call successors, (42) [2025-01-09 05:19:54,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2467 states to 2467 states and 4463 transitions. [2025-01-09 05:19:54,616 INFO L78 Accepts]: Start accepts. Automaton has 2467 states and 4463 transitions. Word has length 66 [2025-01-09 05:19:54,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 05:19:54,616 INFO L471 AbstractCegarLoop]: Abstraction has 2467 states and 4463 transitions. [2025-01-09 05:19:54,616 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-09 05:19:54,617 INFO L276 IsEmpty]: Start isEmpty. Operand 2467 states and 4463 transitions. [2025-01-09 05:19:54,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-01-09 05:19:54,621 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 05:19:54,621 INFO L218 NwaCegarLoop]: trace 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] [2025-01-09 05:19:54,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 05:19:54,621 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 05:19:54,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 05:19:54,622 INFO L85 PathProgramCache]: Analyzing trace with hash 272843190, now seen corresponding path program 1 times [2025-01-09 05:19:54,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 05:19:54,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791970048] [2025-01-09 05:19:54,622 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 05:19:54,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 05:19:54,634 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-01-09 05:19:54,637 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-01-09 05:19:54,637 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 05:19:54,637 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 05:19:54,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 05:19:54,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 05:19:54,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791970048] [2025-01-09 05:19:54,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791970048] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 05:19:54,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 05:19:54,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-09 05:19:54,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479388582] [2025-01-09 05:19:54,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 05:19:54,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 05:19:54,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 05:19:54,776 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 05:19:54,776 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 05:19:54,777 INFO L87 Difference]: Start difference. First operand 2467 states and 4463 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-09 05:19:55,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 05:19:55,152 INFO L93 Difference]: Finished difference Result 3060 states and 5338 transitions. [2025-01-09 05:19:55,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 05:19:55,153 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 66 [2025-01-09 05:19:55,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 05:19:55,167 INFO L225 Difference]: With dead ends: 3060 [2025-01-09 05:19:55,167 INFO L226 Difference]: Without dead ends: 2724 [2025-01-09 05:19:55,169 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-01-09 05:19:55,169 INFO L435 NwaCegarLoop]: 4100 mSDtfsCounter, 4254 mSDsluCounter, 12329 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4264 SdHoareTripleChecker+Valid, 16429 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 05:19:55,170 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4264 Valid, 16429 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 05:19:55,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2724 states. [2025-01-09 05:19:55,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2724 to 2690. [2025-01-09 05:19:55,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2690 states, 2592 states have (on average 1.7955246913580247) internal successors, (4654), 2600 states have internal predecessors, (4654), 60 states have call successors, (60), 30 states have call predecessors, (60), 36 states have return successors, (76), 63 states have call predecessors, (76), 60 states have call successors, (76) [2025-01-09 05:19:55,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2690 states to 2690 states and 4790 transitions. [2025-01-09 05:19:55,259 INFO L78 Accepts]: Start accepts. Automaton has 2690 states and 4790 transitions. Word has length 66 [2025-01-09 05:19:55,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 05:19:55,259 INFO L471 AbstractCegarLoop]: Abstraction has 2690 states and 4790 transitions. [2025-01-09 05:19:55,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-09 05:19:55,259 INFO L276 IsEmpty]: Start isEmpty. Operand 2690 states and 4790 transitions. [2025-01-09 05:19:55,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-01-09 05:19:55,261 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 05:19:55,261 INFO L218 NwaCegarLoop]: trace 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] [2025-01-09 05:19:55,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-09 05:19:55,261 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 05:19:55,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 05:19:55,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1755742920, now seen corresponding path program 1 times [2025-01-09 05:19:55,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 05:19:55,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717119664] [2025-01-09 05:19:55,262 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 05:19:55,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 05:19:55,269 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-01-09 05:19:55,273 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-01-09 05:19:55,274 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 05:19:55,274 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 05:19:55,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 05:19:55,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 05:19:55,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717119664] [2025-01-09 05:19:55,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717119664] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 05:19:55,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 05:19:55,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-09 05:19:55,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482107257] [2025-01-09 05:19:55,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 05:19:55,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 05:19:55,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 05:19:55,397 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 05:19:55,397 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 05:19:55,397 INFO L87 Difference]: Start difference. First operand 2690 states and 4790 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-09 05:19:55,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 05:19:55,898 INFO L93 Difference]: Finished difference Result 3781 states and 6404 transitions. [2025-01-09 05:19:55,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 05:19:55,898 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 66 [2025-01-09 05:19:55,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 05:19:55,914 INFO L225 Difference]: With dead ends: 3781 [2025-01-09 05:19:55,914 INFO L226 Difference]: Without dead ends: 3222 [2025-01-09 05:19:55,916 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-01-09 05:19:55,917 INFO L435 NwaCegarLoop]: 4169 mSDtfsCounter, 4246 mSDsluCounter, 12468 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4255 SdHoareTripleChecker+Valid, 16637 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 05:19:55,918 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4255 Valid, 16637 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 05:19:55,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3222 states. [2025-01-09 05:19:56,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3222 to 3120. [2025-01-09 05:19:56,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3120 states, 2944 states have (on average 1.7540760869565217) internal successors, (5164), 2966 states have internal predecessors, (5164), 100 states have call successors, (100), 54 states have call predecessors, (100), 74 states have return successors, (164), 107 states have call predecessors, (164), 100 states have call successors, (164) [2025-01-09 05:19:56,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3120 states to 3120 states and 5428 transitions. [2025-01-09 05:19:56,083 INFO L78 Accepts]: Start accepts. Automaton has 3120 states and 5428 transitions. Word has length 66 [2025-01-09 05:19:56,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 05:19:56,083 INFO L471 AbstractCegarLoop]: Abstraction has 3120 states and 5428 transitions. [2025-01-09 05:19:56,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-09 05:19:56,083 INFO L276 IsEmpty]: Start isEmpty. Operand 3120 states and 5428 transitions. [2025-01-09 05:19:56,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-01-09 05:19:56,085 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 05:19:56,085 INFO L218 NwaCegarLoop]: trace 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] [2025-01-09 05:19:56,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-09 05:19:56,086 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 05:19:56,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 05:19:56,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1771261638, now seen corresponding path program 1 times [2025-01-09 05:19:56,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 05:19:56,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174420776] [2025-01-09 05:19:56,087 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 05:19:56,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 05:19:56,094 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-01-09 05:19:56,098 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-01-09 05:19:56,099 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 05:19:56,099 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 05:19:56,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 05:19:56,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 05:19:56,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174420776] [2025-01-09 05:19:56,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174420776] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 05:19:56,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 05:19:56,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-09 05:19:56,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986580659] [2025-01-09 05:19:56,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 05:19:56,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 05:19:56,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 05:19:56,205 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 05:19:56,205 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 05:19:56,205 INFO L87 Difference]: Start difference. First operand 3120 states and 5428 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-09 05:19:56,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 05:19:56,706 INFO L93 Difference]: Finished difference Result 5095 states and 8400 transitions. [2025-01-09 05:19:56,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 05:19:56,707 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 66 [2025-01-09 05:19:56,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 05:19:56,730 INFO L225 Difference]: With dead ends: 5095 [2025-01-09 05:19:56,730 INFO L226 Difference]: Without dead ends: 4106 [2025-01-09 05:19:56,736 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-01-09 05:19:56,738 INFO L435 NwaCegarLoop]: 4167 mSDtfsCounter, 4243 mSDsluCounter, 12462 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4256 SdHoareTripleChecker+Valid, 16629 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 05:19:56,738 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4256 Valid, 16629 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 05:19:56,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4106 states. [2025-01-09 05:19:56,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4106 to 4011. [2025-01-09 05:19:56,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4011 states, 3665 states have (on average 1.6916780354706684) internal successors, (6200), 3733 states have internal predecessors, (6200), 176 states have call successors, (176), 102 states have call predecessors, (176), 168 states have return successors, (432), 191 states have call predecessors, (432), 176 states have call successors, (432) [2025-01-09 05:19:56,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4011 states to 4011 states and 6808 transitions. [2025-01-09 05:19:56,926 INFO L78 Accepts]: Start accepts. Automaton has 4011 states and 6808 transitions. Word has length 66 [2025-01-09 05:19:56,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 05:19:56,927 INFO L471 AbstractCegarLoop]: Abstraction has 4011 states and 6808 transitions. [2025-01-09 05:19:56,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-09 05:19:56,927 INFO L276 IsEmpty]: Start isEmpty. Operand 4011 states and 6808 transitions. [2025-01-09 05:19:56,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-01-09 05:19:56,929 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 05:19:56,929 INFO L218 NwaCegarLoop]: trace 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] [2025-01-09 05:19:56,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-01-09 05:19:56,929 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 05:19:56,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 05:19:56,930 INFO L85 PathProgramCache]: Analyzing trace with hash 167900408, now seen corresponding path program 1 times [2025-01-09 05:19:56,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 05:19:56,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738615063] [2025-01-09 05:19:56,930 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 05:19:56,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 05:19:56,940 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-01-09 05:19:56,946 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-01-09 05:19:56,947 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 05:19:56,947 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 05:19:57,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 05:19:57,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 05:19:57,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738615063] [2025-01-09 05:19:57,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738615063] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 05:19:57,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 05:19:57,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 05:19:57,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822024338] [2025-01-09 05:19:57,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 05:19:57,030 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 05:19:57,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 05:19:57,031 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 05:19:57,031 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 05:19:57,031 INFO L87 Difference]: Start difference. First operand 4011 states and 6808 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-09 05:19:57,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 05:19:57,346 INFO L93 Difference]: Finished difference Result 6910 states and 11255 transitions. [2025-01-09 05:19:57,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 05:19:57,347 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 66 [2025-01-09 05:19:57,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 05:19:57,377 INFO L225 Difference]: With dead ends: 6910 [2025-01-09 05:19:57,378 INFO L226 Difference]: Without dead ends: 5031 [2025-01-09 05:19:57,390 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 05:19:57,391 INFO L435 NwaCegarLoop]: 4287 mSDtfsCounter, 4261 mSDsluCounter, 4228 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4261 SdHoareTripleChecker+Valid, 8515 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 05:19:57,391 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4261 Valid, 8515 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 05:19:57,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5031 states. [2025-01-09 05:19:57,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5031 to 4950. [2025-01-09 05:19:57,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4950 states, 4434 states have (on average 1.6380243572395128) internal successors, (7263), 4531 states have internal predecessors, (7263), 272 states have call successors, (272), 156 states have call predecessors, (272), 242 states have return successors, (585), 278 states have call predecessors, (585), 272 states have call successors, (585) [2025-01-09 05:19:57,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4950 states to 4950 states and 8120 transitions. [2025-01-09 05:19:57,667 INFO L78 Accepts]: Start accepts. Automaton has 4950 states and 8120 transitions. Word has length 66 [2025-01-09 05:19:57,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 05:19:57,667 INFO L471 AbstractCegarLoop]: Abstraction has 4950 states and 8120 transitions. [2025-01-09 05:19:57,667 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-09 05:19:57,667 INFO L276 IsEmpty]: Start isEmpty. Operand 4950 states and 8120 transitions. [2025-01-09 05:19:57,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2025-01-09 05:19:57,676 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 05:19:57,677 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2025-01-09 05:19:57,677 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-01-09 05:19:57,677 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 05:19:57,677 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 05:19:57,677 INFO L85 PathProgramCache]: Analyzing trace with hash 812456580, now seen corresponding path program 1 times [2025-01-09 05:19:57,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 05:19:57,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373803538] [2025-01-09 05:19:57,678 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 05:19:57,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 05:19:57,686 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 107 statements into 1 equivalence classes. [2025-01-09 05:19:57,690 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 107 of 107 statements. [2025-01-09 05:19:57,690 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 05:19:57,690 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 05:19:57,767 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-01-09 05:19:57,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 05:19:57,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373803538] [2025-01-09 05:19:57,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373803538] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 05:19:57,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324952836] [2025-01-09 05:19:57,768 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 05:19:57,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 05:19:57,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 05:19:57,772 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 05:19:57,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-01-09 05:19:57,831 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 107 statements into 1 equivalence classes. [2025-01-09 05:19:57,874 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 107 of 107 statements. [2025-01-09 05:19:57,874 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 05:19:57,874 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 05:19:57,877 INFO L256 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-01-09 05:19:57,883 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 05:19:57,945 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-01-09 05:19:57,945 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 05:19:57,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [324952836] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 05:19:57,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 05:19:57,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2025-01-09 05:19:57,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637860566] [2025-01-09 05:19:57,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 05:19:57,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 05:19:57,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 05:19:57,947 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 05:19:57,947 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 05:19:57,947 INFO L87 Difference]: Start difference. First operand 4950 states and 8120 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-01-09 05:19:58,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 05:19:58,321 INFO L93 Difference]: Finished difference Result 10443 states and 16282 transitions. [2025-01-09 05:19:58,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 05:19:58,322 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 107 [2025-01-09 05:19:58,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 05:19:58,364 INFO L225 Difference]: With dead ends: 10443 [2025-01-09 05:19:58,364 INFO L226 Difference]: Without dead ends: 7625 [2025-01-09 05:19:58,374 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 05:19:58,374 INFO L435 NwaCegarLoop]: 4136 mSDtfsCounter, 4095 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4095 SdHoareTripleChecker+Valid, 4292 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 05:19:58,374 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4095 Valid, 4292 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 05:19:58,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7625 states. [2025-01-09 05:19:58,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7625 to 7597. [2025-01-09 05:19:58,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7597 states, 6605 states have (on average 1.5660862982588948) internal successors, (10344), 6797 states have internal predecessors, (10344), 510 states have call successors, (510), 308 states have call predecessors, (510), 480 states have return successors, (1121), 507 states have call predecessors, (1121), 510 states have call successors, (1121) [2025-01-09 05:19:58,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7597 states to 7597 states and 11975 transitions. [2025-01-09 05:19:58,605 INFO L78 Accepts]: Start accepts. Automaton has 7597 states and 11975 transitions. Word has length 107 [2025-01-09 05:19:58,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 05:19:58,605 INFO L471 AbstractCegarLoop]: Abstraction has 7597 states and 11975 transitions. [2025-01-09 05:19:58,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-01-09 05:19:58,605 INFO L276 IsEmpty]: Start isEmpty. Operand 7597 states and 11975 transitions. [2025-01-09 05:19:58,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2025-01-09 05:19:58,613 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 05:19:58,613 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2025-01-09 05:19:58,620 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-09 05:19:58,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 05:19:58,814 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 05:19:58,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 05:19:58,815 INFO L85 PathProgramCache]: Analyzing trace with hash 18602050, now seen corresponding path program 1 times [2025-01-09 05:19:58,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 05:19:58,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034595294] [2025-01-09 05:19:58,815 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 05:19:58,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 05:19:58,820 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 107 statements into 1 equivalence classes. [2025-01-09 05:19:58,823 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 107 of 107 statements. [2025-01-09 05:19:58,823 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 05:19:58,823 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 05:19:58,873 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-01-09 05:19:58,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 05:19:58,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034595294] [2025-01-09 05:19:58,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034595294] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 05:19:58,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932036820] [2025-01-09 05:19:58,875 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 05:19:58,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 05:19:58,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 05:19:58,880 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 05:19:58,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-01-09 05:19:58,928 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 107 statements into 1 equivalence classes. [2025-01-09 05:19:58,966 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 107 of 107 statements. [2025-01-09 05:19:58,966 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 05:19:58,966 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 05:19:58,968 INFO L256 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-01-09 05:19:58,970 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 05:19:59,000 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-01-09 05:19:59,000 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 05:19:59,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [932036820] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 05:19:59,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 05:19:59,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-01-09 05:19:59,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104119226] [2025-01-09 05:19:59,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 05:19:59,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 05:19:59,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 05:19:59,002 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 05:19:59,002 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 05:19:59,002 INFO L87 Difference]: Start difference. First operand 7597 states and 11975 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-01-09 05:19:59,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 05:19:59,469 INFO L93 Difference]: Finished difference Result 18239 states and 27877 transitions. [2025-01-09 05:19:59,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 05:19:59,469 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 107 [2025-01-09 05:19:59,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 05:19:59,525 INFO L225 Difference]: With dead ends: 18239 [2025-01-09 05:19:59,525 INFO L226 Difference]: Without dead ends: 12775 [2025-01-09 05:19:59,540 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 05:19:59,541 INFO L435 NwaCegarLoop]: 4294 mSDtfsCounter, 153 mSDsluCounter, 4134 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 8428 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 05:19:59,541 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 8428 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 05:19:59,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12775 states. [2025-01-09 05:20:00,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12775 to 12775. [2025-01-09 05:20:00,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12775 states, 10846 states have (on average 1.5038723953531257) internal successors, (16311), 11211 states have internal predecessors, (16311), 975 states have call successors, (975), 608 states have call predecessors, (975), 952 states have return successors, (2348), 987 states have call predecessors, (2348), 975 states have call successors, (2348) [2025-01-09 05:20:00,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12775 states to 12775 states and 19634 transitions. [2025-01-09 05:20:00,074 INFO L78 Accepts]: Start accepts. Automaton has 12775 states and 19634 transitions. Word has length 107 [2025-01-09 05:20:00,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 05:20:00,075 INFO L471 AbstractCegarLoop]: Abstraction has 12775 states and 19634 transitions. [2025-01-09 05:20:00,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-01-09 05:20:00,076 INFO L276 IsEmpty]: Start isEmpty. Operand 12775 states and 19634 transitions. [2025-01-09 05:20:00,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2025-01-09 05:20:00,111 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 05:20:00,111 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2025-01-09 05:20:00,119 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-01-09 05:20:00,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 05:20:00,312 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 05:20:00,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 05:20:00,312 INFO L85 PathProgramCache]: Analyzing trace with hash 67629329, now seen corresponding path program 1 times [2025-01-09 05:20:00,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 05:20:00,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703430908] [2025-01-09 05:20:00,313 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 05:20:00,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 05:20:00,323 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 139 statements into 1 equivalence classes. [2025-01-09 05:20:00,329 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 139 of 139 statements. [2025-01-09 05:20:00,329 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 05:20:00,329 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 05:20:00,402 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2025-01-09 05:20:00,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 05:20:00,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703430908] [2025-01-09 05:20:00,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703430908] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 05:20:00,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285720588] [2025-01-09 05:20:00,403 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 05:20:00,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 05:20:00,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 05:20:00,407 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 05:20:00,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-01-09 05:20:00,483 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 139 statements into 1 equivalence classes. [2025-01-09 05:20:00,537 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 139 of 139 statements. [2025-01-09 05:20:00,537 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 05:20:00,537 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 05:20:00,543 INFO L256 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-01-09 05:20:00,551 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 05:20:00,675 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-01-09 05:20:00,678 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 05:20:00,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1285720588] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 05:20:00,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 05:20:00,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2025-01-09 05:20:00,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968917649] [2025-01-09 05:20:00,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 05:20:00,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 05:20:00,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 05:20:00,680 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 05:20:00,680 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 05:20:00,680 INFO L87 Difference]: Start difference. First operand 12775 states and 19634 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-01-09 05:20:01,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 05:20:01,314 INFO L93 Difference]: Finished difference Result 33619 states and 50647 transitions. [2025-01-09 05:20:01,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 05:20:01,315 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 139 [2025-01-09 05:20:01,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 05:20:01,408 INFO L225 Difference]: With dead ends: 33619 [2025-01-09 05:20:01,408 INFO L226 Difference]: Without dead ends: 22981 [2025-01-09 05:20:01,448 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 05:20:01,450 INFO L435 NwaCegarLoop]: 4144 mSDtfsCounter, 4055 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4055 SdHoareTripleChecker+Valid, 4300 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 05:20:01,451 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4055 Valid, 4300 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 05:20:01,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22981 states. [2025-01-09 05:20:02,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22981 to 22875. [2025-01-09 05:20:02,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22875 states, 19118 states have (on average 1.4589915263102835) internal successors, (27893), 19845 states have internal predecessors, (27893), 1869 states have call successors, (1869), 1198 states have call predecessors, (1869), 1886 states have return successors, (4542), 1863 states have call predecessors, (4542), 1869 states have call successors, (4542) [2025-01-09 05:20:02,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22875 states to 22875 states and 34304 transitions. [2025-01-09 05:20:02,794 INFO L78 Accepts]: Start accepts. Automaton has 22875 states and 34304 transitions. Word has length 139 [2025-01-09 05:20:02,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 05:20:02,795 INFO L471 AbstractCegarLoop]: Abstraction has 22875 states and 34304 transitions. [2025-01-09 05:20:02,795 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-01-09 05:20:02,795 INFO L276 IsEmpty]: Start isEmpty. Operand 22875 states and 34304 transitions. [2025-01-09 05:20:02,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2025-01-09 05:20:02,863 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 05:20:02,864 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2025-01-09 05:20:02,870 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-01-09 05:20:03,064 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 05:20:03,065 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 05:20:03,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 05:20:03,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1591654586, now seen corresponding path program 1 times [2025-01-09 05:20:03,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 05:20:03,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003245402] [2025-01-09 05:20:03,065 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 05:20:03,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 05:20:03,073 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 155 statements into 1 equivalence classes. [2025-01-09 05:20:03,078 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 155 of 155 statements. [2025-01-09 05:20:03,078 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 05:20:03,078 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 05:20:03,138 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2025-01-09 05:20:03,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 05:20:03,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003245402] [2025-01-09 05:20:03,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003245402] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 05:20:03,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696126563] [2025-01-09 05:20:03,138 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 05:20:03,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 05:20:03,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 05:20:03,141 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 05:20:03,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-01-09 05:20:03,188 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 155 statements into 1 equivalence classes. [2025-01-09 05:20:03,227 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 155 of 155 statements. [2025-01-09 05:20:03,227 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 05:20:03,227 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 05:20:03,229 INFO L256 TraceCheckSpWp]: Trace formula consists of 518 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-01-09 05:20:03,232 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 05:20:03,308 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-01-09 05:20:03,308 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 05:20:03,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696126563] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 05:20:03,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 05:20:03,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-01-09 05:20:03,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353759110] [2025-01-09 05:20:03,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 05:20:03,309 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 05:20:03,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 05:20:03,310 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 05:20:03,310 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 05:20:03,310 INFO L87 Difference]: Start difference. First operand 22875 states and 34304 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-01-09 05:20:04,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 05:20:04,321 INFO L93 Difference]: Finished difference Result 46049 states and 70708 transitions. [2025-01-09 05:20:04,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 05:20:04,322 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 155 [2025-01-09 05:20:04,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 05:20:04,578 INFO L225 Difference]: With dead ends: 46049 [2025-01-09 05:20:04,582 INFO L226 Difference]: Without dead ends: 25309 [2025-01-09 05:20:04,702 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 05:20:04,707 INFO L435 NwaCegarLoop]: 4133 mSDtfsCounter, 4074 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4074 SdHoareTripleChecker+Valid, 4167 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 05:20:04,707 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4074 Valid, 4167 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 05:20:04,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25309 states. [2025-01-09 05:20:05,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25309 to 25309. [2025-01-09 05:20:05,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25309 states, 21340 states have (on average 1.405763823805061) internal successors, (29999), 22067 states have internal predecessors, (29999), 1923 states have call successors, (1923), 1356 states have call predecessors, (1923), 2044 states have return successors, (4610), 1917 states have call predecessors, (4610), 1923 states have call successors, (4610) [2025-01-09 05:20:05,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25309 states to 25309 states and 36532 transitions. [2025-01-09 05:20:05,701 INFO L78 Accepts]: Start accepts. Automaton has 25309 states and 36532 transitions. Word has length 155 [2025-01-09 05:20:05,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 05:20:05,702 INFO L471 AbstractCegarLoop]: Abstraction has 25309 states and 36532 transitions. [2025-01-09 05:20:05,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-01-09 05:20:05,702 INFO L276 IsEmpty]: Start isEmpty. Operand 25309 states and 36532 transitions. [2025-01-09 05:20:05,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2025-01-09 05:20:05,756 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 05:20:05,756 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2025-01-09 05:20:05,768 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-01-09 05:20:05,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-01-09 05:20:05,957 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 05:20:05,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 05:20:05,958 INFO L85 PathProgramCache]: Analyzing trace with hash 661628733, now seen corresponding path program 1 times [2025-01-09 05:20:05,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 05:20:05,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022418873] [2025-01-09 05:20:05,958 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 05:20:05,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 05:20:05,966 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 155 statements into 1 equivalence classes. [2025-01-09 05:20:05,970 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 155 of 155 statements. [2025-01-09 05:20:05,970 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 05:20:05,970 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 05:20:06,038 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2025-01-09 05:20:06,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 05:20:06,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022418873] [2025-01-09 05:20:06,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022418873] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 05:20:06,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557802735] [2025-01-09 05:20:06,039 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 05:20:06,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 05:20:06,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 05:20:06,044 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 05:20:06,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-01-09 05:20:06,086 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 155 statements into 1 equivalence classes. [2025-01-09 05:20:06,126 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 155 of 155 statements. [2025-01-09 05:20:06,126 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 05:20:06,127 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 05:20:06,128 INFO L256 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-01-09 05:20:06,130 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 05:20:06,182 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-01-09 05:20:06,184 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 05:20:06,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557802735] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 05:20:06,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 05:20:06,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-01-09 05:20:06,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30283647] [2025-01-09 05:20:06,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 05:20:06,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 05:20:06,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 05:20:06,185 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 05:20:06,185 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 05:20:06,185 INFO L87 Difference]: Start difference. First operand 25309 states and 36532 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-01-09 05:20:06,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 05:20:06,805 INFO L93 Difference]: Finished difference Result 40779 states and 58823 transitions. [2025-01-09 05:20:06,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 05:20:06,806 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 155 [2025-01-09 05:20:06,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 05:20:06,891 INFO L225 Difference]: With dead ends: 40779 [2025-01-09 05:20:06,891 INFO L226 Difference]: Without dead ends: 21961 [2025-01-09 05:20:06,938 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 05:20:06,940 INFO L435 NwaCegarLoop]: 4132 mSDtfsCounter, 4089 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4089 SdHoareTripleChecker+Valid, 4165 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 05:20:06,940 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4089 Valid, 4165 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 05:20:06,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21961 states. [2025-01-09 05:20:08,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21961 to 16593. [2025-01-09 05:20:08,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16593 states, 14324 states have (on average 1.3917201898910918) internal successors, (19935), 14557 states have internal predecessors, (19935), 1183 states have call successors, (1183), 876 states have call predecessors, (1183), 1084 states have return successors, (1942), 1175 states have call predecessors, (1942), 1183 states have call successors, (1942) [2025-01-09 05:20:08,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16593 states to 16593 states and 23060 transitions. [2025-01-09 05:20:08,351 INFO L78 Accepts]: Start accepts. Automaton has 16593 states and 23060 transitions. Word has length 155 [2025-01-09 05:20:08,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 05:20:08,351 INFO L471 AbstractCegarLoop]: Abstraction has 16593 states and 23060 transitions. [2025-01-09 05:20:08,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-01-09 05:20:08,352 INFO L276 IsEmpty]: Start isEmpty. Operand 16593 states and 23060 transitions. [2025-01-09 05:20:08,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2025-01-09 05:20:08,381 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 05:20:08,382 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2025-01-09 05:20:08,390 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-01-09 05:20:08,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-01-09 05:20:08,583 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 05:20:08,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 05:20:08,584 INFO L85 PathProgramCache]: Analyzing trace with hash -764266273, now seen corresponding path program 1 times [2025-01-09 05:20:08,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 05:20:08,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66157138] [2025-01-09 05:20:08,584 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 05:20:08,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 05:20:08,593 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 155 statements into 1 equivalence classes. [2025-01-09 05:20:08,598 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 155 of 155 statements. [2025-01-09 05:20:08,598 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 05:20:08,598 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 05:20:08,670 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2025-01-09 05:20:08,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 05:20:08,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66157138] [2025-01-09 05:20:08,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66157138] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 05:20:08,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [457967792] [2025-01-09 05:20:08,671 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 05:20:08,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 05:20:08,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 05:20:08,673 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 05:20:08,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-01-09 05:20:08,723 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 155 statements into 1 equivalence classes. [2025-01-09 05:20:08,768 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 155 of 155 statements. [2025-01-09 05:20:08,768 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 05:20:08,769 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 05:20:08,771 INFO L256 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-09 05:20:08,773 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 05:20:08,810 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2025-01-09 05:20:08,811 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 05:20:08,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [457967792] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 05:20:08,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 05:20:08,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-01-09 05:20:08,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589279317] [2025-01-09 05:20:08,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 05:20:08,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 05:20:08,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 05:20:08,813 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 05:20:08,813 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 05:20:08,813 INFO L87 Difference]: Start difference. First operand 16593 states and 23060 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2025-01-09 05:20:09,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 05:20:09,548 INFO L93 Difference]: Finished difference Result 27553 states and 37425 transitions. [2025-01-09 05:20:09,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 05:20:09,549 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 155 [2025-01-09 05:20:09,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 05:20:09,620 INFO L225 Difference]: With dead ends: 27553 [2025-01-09 05:20:09,621 INFO L226 Difference]: Without dead ends: 17527 [2025-01-09 05:20:09,647 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 05:20:09,648 INFO L435 NwaCegarLoop]: 4166 mSDtfsCounter, 4083 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4083 SdHoareTripleChecker+Valid, 4326 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 05:20:09,649 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4083 Valid, 4326 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 05:20:09,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17527 states. [2025-01-09 05:20:10,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17527 to 17417. [2025-01-09 05:20:10,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17417 states, 15104 states have (on average 1.3684454449152543) internal successors, (20669), 15337 states have internal predecessors, (20669), 1183 states have call successors, (1183), 920 states have call predecessors, (1183), 1128 states have return successors, (1986), 1175 states have call predecessors, (1986), 1183 states have call successors, (1986) [2025-01-09 05:20:10,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17417 states to 17417 states and 23838 transitions. [2025-01-09 05:20:10,461 INFO L78 Accepts]: Start accepts. Automaton has 17417 states and 23838 transitions. Word has length 155 [2025-01-09 05:20:10,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 05:20:10,462 INFO L471 AbstractCegarLoop]: Abstraction has 17417 states and 23838 transitions. [2025-01-09 05:20:10,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2025-01-09 05:20:10,463 INFO L276 IsEmpty]: Start isEmpty. Operand 17417 states and 23838 transitions. [2025-01-09 05:20:10,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2025-01-09 05:20:10,479 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 05:20:10,480 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2025-01-09 05:20:10,487 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-01-09 05:20:10,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-01-09 05:20:10,685 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 05:20:10,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 05:20:10,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1638009579, now seen corresponding path program 1 times [2025-01-09 05:20:10,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 05:20:10,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929546308] [2025-01-09 05:20:10,687 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 05:20:10,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 05:20:10,698 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 156 statements into 1 equivalence classes. [2025-01-09 05:20:10,701 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 156 of 156 statements. [2025-01-09 05:20:10,703 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 05:20:10,703 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 05:20:10,774 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2025-01-09 05:20:10,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 05:20:10,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929546308] [2025-01-09 05:20:10,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929546308] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 05:20:10,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109411681] [2025-01-09 05:20:10,775 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 05:20:10,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 05:20:10,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 05:20:10,778 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 05:20:10,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-01-09 05:20:10,829 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 156 statements into 1 equivalence classes. [2025-01-09 05:20:10,869 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 156 of 156 statements. [2025-01-09 05:20:10,870 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 05:20:10,870 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 05:20:10,872 INFO L256 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-01-09 05:20:10,874 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 05:20:10,894 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-01-09 05:20:10,894 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 05:20:10,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109411681] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 05:20:10,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 05:20:10,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-01-09 05:20:10,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487354079] [2025-01-09 05:20:10,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 05:20:10,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 05:20:10,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 05:20:10,895 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 05:20:10,895 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 05:20:10,896 INFO L87 Difference]: Start difference. First operand 17417 states and 23838 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2025-01-09 05:20:11,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 05:20:11,630 INFO L93 Difference]: Finished difference Result 45771 states and 61336 transitions. [2025-01-09 05:20:11,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 05:20:11,631 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 156 [2025-01-09 05:20:11,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 05:20:11,729 INFO L225 Difference]: With dead ends: 45771 [2025-01-09 05:20:11,729 INFO L226 Difference]: Without dead ends: 30493 [2025-01-09 05:20:11,764 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 05:20:11,765 INFO L435 NwaCegarLoop]: 4283 mSDtfsCounter, 136 mSDsluCounter, 4128 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 8411 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 05:20:11,765 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 8411 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 05:20:11,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30493 states. [2025-01-09 05:20:13,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30493 to 30491. [2025-01-09 05:20:13,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30491 states, 26108 states have (on average 1.3251493795005362) internal successors, (34597), 26573 states have internal predecessors, (34597), 2245 states have call successors, (2245), 1720 states have call predecessors, (2245), 2136 states have return successors, (4298), 2229 states have call predecessors, (4298), 2245 states have call successors, (4298) [2025-01-09 05:20:13,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30491 states to 30491 states and 41140 transitions. [2025-01-09 05:20:13,451 INFO L78 Accepts]: Start accepts. Automaton has 30491 states and 41140 transitions. Word has length 156 [2025-01-09 05:20:13,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 05:20:13,452 INFO L471 AbstractCegarLoop]: Abstraction has 30491 states and 41140 transitions. [2025-01-09 05:20:13,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2025-01-09 05:20:13,452 INFO L276 IsEmpty]: Start isEmpty. Operand 30491 states and 41140 transitions. [2025-01-09 05:20:13,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2025-01-09 05:20:13,508 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 05:20:13,508 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2025-01-09 05:20:13,520 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-01-09 05:20:13,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 05:20:13,709 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 05:20:13,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 05:20:13,709 INFO L85 PathProgramCache]: Analyzing trace with hash 861617176, now seen corresponding path program 1 times [2025-01-09 05:20:13,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 05:20:13,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602094169] [2025-01-09 05:20:13,709 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 05:20:13,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 05:20:13,723 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 157 statements into 1 equivalence classes. [2025-01-09 05:20:13,727 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 157 of 157 statements. [2025-01-09 05:20:13,727 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 05:20:13,728 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 05:20:13,793 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2025-01-09 05:20:13,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 05:20:13,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602094169] [2025-01-09 05:20:13,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602094169] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 05:20:13,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942927949] [2025-01-09 05:20:13,794 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 05:20:13,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 05:20:13,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 05:20:13,796 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 05:20:13,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-01-09 05:20:13,851 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 157 statements into 1 equivalence classes. [2025-01-09 05:20:13,896 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 157 of 157 statements. [2025-01-09 05:20:13,896 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 05:20:13,896 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 05:20:13,898 INFO L256 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-01-09 05:20:13,901 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 05:20:13,916 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-01-09 05:20:13,916 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 05:20:13,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [942927949] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 05:20:13,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 05:20:13,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-01-09 05:20:13,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996974327] [2025-01-09 05:20:13,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 05:20:13,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 05:20:13,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 05:20:13,918 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 05:20:13,918 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 05:20:13,918 INFO L87 Difference]: Start difference. First operand 30491 states and 41140 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2025-01-09 05:20:16,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 05:20:16,012 INFO L93 Difference]: Finished difference Result 83037 states and 111284 transitions. [2025-01-09 05:20:16,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 05:20:16,017 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 157 [2025-01-09 05:20:16,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 05:20:16,178 INFO L225 Difference]: With dead ends: 83037 [2025-01-09 05:20:16,179 INFO L226 Difference]: Without dead ends: 54693 [2025-01-09 05:20:16,221 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 05:20:16,222 INFO L435 NwaCegarLoop]: 4285 mSDtfsCounter, 145 mSDsluCounter, 4128 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 8413 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 05:20:16,222 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 8413 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 05:20:16,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54693 states. [2025-01-09 05:20:18,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54693 to 54691. [2025-01-09 05:20:18,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54691 states, 46376 states have (on average 1.2917241676729343) internal successors, (59905), 47305 states have internal predecessors, (59905), 4265 states have call successors, (4265), 3216 states have call predecessors, (4265), 4048 states have return successors, (9288), 4233 states have call predecessors, (9288), 4265 states have call successors, (9288) [2025-01-09 05:20:18,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54691 states to 54691 states and 73458 transitions. [2025-01-09 05:20:18,374 INFO L78 Accepts]: Start accepts. Automaton has 54691 states and 73458 transitions. Word has length 157 [2025-01-09 05:20:18,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 05:20:18,374 INFO L471 AbstractCegarLoop]: Abstraction has 54691 states and 73458 transitions. [2025-01-09 05:20:18,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2025-01-09 05:20:18,375 INFO L276 IsEmpty]: Start isEmpty. Operand 54691 states and 73458 transitions. [2025-01-09 05:20:18,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2025-01-09 05:20:18,437 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 05:20:18,437 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2025-01-09 05:20:18,443 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-01-09 05:20:18,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 05:20:18,638 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 05:20:18,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 05:20:18,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1537707638, now seen corresponding path program 1 times [2025-01-09 05:20:18,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 05:20:18,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661558850] [2025-01-09 05:20:18,639 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 05:20:18,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 05:20:18,649 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 157 statements into 1 equivalence classes. [2025-01-09 05:20:18,652 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 157 of 157 statements. [2025-01-09 05:20:18,653 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 05:20:18,653 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 05:20:18,707 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2025-01-09 05:20:18,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 05:20:18,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661558850] [2025-01-09 05:20:18,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661558850] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 05:20:18,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92975325] [2025-01-09 05:20:18,708 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 05:20:18,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 05:20:18,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 05:20:18,711 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 05:20:18,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-01-09 05:20:18,758 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 157 statements into 1 equivalence classes. [2025-01-09 05:20:18,802 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 157 of 157 statements. [2025-01-09 05:20:18,802 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 05:20:18,802 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 05:20:18,804 INFO L256 TraceCheckSpWp]: Trace formula consists of 518 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-09 05:20:18,807 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 05:20:18,843 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2025-01-09 05:20:18,845 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 05:20:18,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [92975325] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 05:20:18,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 05:20:18,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-01-09 05:20:18,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599153247] [2025-01-09 05:20:18,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 05:20:18,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 05:20:18,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 05:20:18,847 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 05:20:18,847 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 05:20:18,847 INFO L87 Difference]: Start difference. First operand 54691 states and 73458 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2025-01-09 05:20:21,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 05:20:21,191 INFO L93 Difference]: Finished difference Result 95807 states and 128124 transitions. [2025-01-09 05:20:21,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 05:20:21,192 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 157 [2025-01-09 05:20:21,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 05:20:21,350 INFO L225 Difference]: With dead ends: 95807 [2025-01-09 05:20:21,351 INFO L226 Difference]: Without dead ends: 55973 [2025-01-09 05:20:21,413 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 05:20:21,414 INFO L435 NwaCegarLoop]: 4154 mSDtfsCounter, 4092 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4092 SdHoareTripleChecker+Valid, 4312 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 05:20:21,414 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4092 Valid, 4312 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 05:20:21,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55973 states. [2025-01-09 05:20:23,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55973 to 54571. [2025-01-09 05:20:23,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54571 states, 46256 states have (on average 1.283401072293324) internal successors, (59365), 47185 states have internal predecessors, (59365), 4265 states have call successors, (4265), 3216 states have call predecessors, (4265), 4048 states have return successors, (9288), 4233 states have call predecessors, (9288), 4265 states have call successors, (9288) [2025-01-09 05:20:23,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54571 states to 54571 states and 72918 transitions. [2025-01-09 05:20:23,426 INFO L78 Accepts]: Start accepts. Automaton has 54571 states and 72918 transitions. Word has length 157 [2025-01-09 05:20:23,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 05:20:23,427 INFO L471 AbstractCegarLoop]: Abstraction has 54571 states and 72918 transitions. [2025-01-09 05:20:23,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2025-01-09 05:20:23,427 INFO L276 IsEmpty]: Start isEmpty. Operand 54571 states and 72918 transitions. [2025-01-09 05:20:23,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2025-01-09 05:20:23,487 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 05:20:23,487 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2025-01-09 05:20:23,494 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-01-09 05:20:23,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 05:20:23,688 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 05:20:23,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 05:20:23,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1395597008, now seen corresponding path program 1 times [2025-01-09 05:20:23,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 05:20:23,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721183774] [2025-01-09 05:20:23,689 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 05:20:23,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 05:20:23,695 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 157 statements into 1 equivalence classes. [2025-01-09 05:20:23,696 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 157 of 157 statements. [2025-01-09 05:20:23,696 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 05:20:23,696 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 05:20:23,714 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2025-01-09 05:20:23,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 05:20:23,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721183774] [2025-01-09 05:20:23,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721183774] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 05:20:23,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 05:20:23,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 05:20:23,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577428151] [2025-01-09 05:20:23,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 05:20:23,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 05:20:23,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 05:20:23,715 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 05:20:23,716 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 05:20:23,716 INFO L87 Difference]: Start difference. First operand 54571 states and 72918 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-01-09 05:20:25,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 05:20:25,117 INFO L93 Difference]: Finished difference Result 94289 states and 124995 transitions. [2025-01-09 05:20:25,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 05:20:25,118 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 157 [2025-01-09 05:20:25,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 05:20:25,316 INFO L225 Difference]: With dead ends: 94289 [2025-01-09 05:20:25,316 INFO L226 Difference]: Without dead ends: 41861 [2025-01-09 05:20:25,613 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 05:20:25,614 INFO L435 NwaCegarLoop]: 4132 mSDtfsCounter, 169 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 8090 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 05:20:25,615 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 8090 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 05:20:25,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41861 states.