./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-5.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47329ae0-e2bd-438c-9638-bba91b3bb716/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47329ae0-e2bd-438c-9638-bba91b3bb716/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47329ae0-e2bd-438c-9638-bba91b3bb716/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47329ae0-e2bd-438c-9638-bba91b3bb716/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-5.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47329ae0-e2bd-438c-9638-bba91b3bb716/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47329ae0-e2bd-438c-9638-bba91b3bb716/bin/uautomizer-verify-84ZbGMXZE1 --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 ca2f933d67faf408af35a2606c62cae5d484e0ad1d571925efee98edf8420268 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 15:45:11,658 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 15:45:11,717 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47329ae0-e2bd-438c-9638-bba91b3bb716/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 15:45:11,722 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 15:45:11,722 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 15:45:11,745 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 15:45:11,745 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 15:45:11,745 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 15:45:11,746 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 15:45:11,746 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 15:45:11,746 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 15:45:11,746 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 15:45:11,746 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 15:45:11,746 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 15:45:11,747 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 15:45:11,747 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 15:45:11,747 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 15:45:11,747 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 15:45:11,747 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 15:45:11,747 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 15:45:11,747 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 15:45:11,747 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 15:45:11,747 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 15:45:11,747 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 15:45:11,748 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 15:45:11,748 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 15:45:11,748 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 15:45:11,748 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 15:45:11,748 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 15:45:11,748 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 15:45:11,748 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 15:45:11,748 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 15:45:11,748 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 15:45:11,748 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 15:45:11,748 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 15:45:11,749 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 15:45:11,749 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 15:45:11,749 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 15:45:11,749 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 15:45:11,749 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 15:45:11,749 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 15:45:11,749 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 15:45:11,749 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 15:45:11,749 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 15:45:11,749 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 15:45:11,749 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 15:45:11,750 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 15:45:11,750 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 15:45:11,750 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 -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47329ae0-e2bd-438c-9638-bba91b3bb716/bin/uautomizer-verify-84ZbGMXZE1 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 -> ca2f933d67faf408af35a2606c62cae5d484e0ad1d571925efee98edf8420268 [2024-12-02 15:45:11,977 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 15:45:11,985 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 15:45:11,988 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 15:45:11,989 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 15:45:11,989 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 15:45:11,990 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47329ae0-e2bd-438c-9638-bba91b3bb716/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-5.i [2024-12-02 15:45:14,718 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47329ae0-e2bd-438c-9638-bba91b3bb716/bin/uautomizer-verify-84ZbGMXZE1/data/89de19be2/10e8cd0f14c34dcfa01c653780402419/FLAGc382fb9a9 [2024-12-02 15:45:14,735 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) [2024-12-02 15:45:14,940 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 15:45:14,941 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47329ae0-e2bd-438c-9638-bba91b3bb716/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-5.i [2024-12-02 15:45:14,949 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47329ae0-e2bd-438c-9638-bba91b3bb716/bin/uautomizer-verify-84ZbGMXZE1/data/89de19be2/10e8cd0f14c34dcfa01c653780402419/FLAGc382fb9a9 [2024-12-02 15:45:15,291 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47329ae0-e2bd-438c-9638-bba91b3bb716/bin/uautomizer-verify-84ZbGMXZE1/data/89de19be2/10e8cd0f14c34dcfa01c653780402419 [2024-12-02 15:45:15,292 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 15:45:15,293 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 15:45:15,294 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 15:45:15,294 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 15:45:15,297 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 15:45:15,298 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:45:15" (1/1) ... [2024-12-02 15:45:15,298 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16ef0782 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:45:15, skipping insertion in model container [2024-12-02 15:45:15,299 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:45:15" (1/1) ... [2024-12-02 15:45:15,315 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 15:45:15,435 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47329ae0-e2bd-438c-9638-bba91b3bb716/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-5.i[915,928] [2024-12-02 15:45:15,493 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 15:45:15,501 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 15:45:15,508 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47329ae0-e2bd-438c-9638-bba91b3bb716/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-5.i[915,928] [2024-12-02 15:45:15,542 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 15:45:15,559 INFO L204 MainTranslator]: Completed translation [2024-12-02 15:45:15,560 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:45:15 WrapperNode [2024-12-02 15:45:15,560 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 15:45:15,561 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 15:45:15,561 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 15:45:15,561 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 15:45:15,567 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:45:15" (1/1) ... [2024-12-02 15:45:15,579 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:45:15" (1/1) ... [2024-12-02 15:45:15,613 INFO L138 Inliner]: procedures = 26, calls = 158, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 417 [2024-12-02 15:45:15,613 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 15:45:15,613 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 15:45:15,613 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 15:45:15,614 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 15:45:15,620 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:45:15" (1/1) ... [2024-12-02 15:45:15,620 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:45:15" (1/1) ... [2024-12-02 15:45:15,623 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:45:15" (1/1) ... [2024-12-02 15:45:15,641 INFO L175 MemorySlicer]: Split 122 memory accesses to 6 slices as follows [2, 6, 3, 28, 59, 24]. 48 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 1, 1, 6, 4, 3]. The 17 writes are split as follows [0, 1, 1, 6, 6, 3]. [2024-12-02 15:45:15,642 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:45:15" (1/1) ... [2024-12-02 15:45:15,642 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:45:15" (1/1) ... [2024-12-02 15:45:15,658 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:45:15" (1/1) ... [2024-12-02 15:45:15,660 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:45:15" (1/1) ... [2024-12-02 15:45:15,664 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:45:15" (1/1) ... [2024-12-02 15:45:15,666 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:45:15" (1/1) ... [2024-12-02 15:45:15,668 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:45:15" (1/1) ... [2024-12-02 15:45:15,672 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 15:45:15,673 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 15:45:15,673 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 15:45:15,673 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 15:45:15,674 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:45:15" (1/1) ... [2024-12-02 15:45:15,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 15:45:15,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47329ae0-e2bd-438c-9638-bba91b3bb716/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:45:15,702 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47329ae0-e2bd-438c-9638-bba91b3bb716/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 15:45:15,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47329ae0-e2bd-438c-9638-bba91b3bb716/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 15:45:15,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 15:45:15,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 15:45:15,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-02 15:45:15,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-12-02 15:45:15,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-12-02 15:45:15,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-12-02 15:45:15,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-12-02 15:45:15,723 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 15:45:15,723 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 15:45:15,723 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-12-02 15:45:15,723 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-12-02 15:45:15,723 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-12-02 15:45:15,723 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-12-02 15:45:15,723 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 15:45:15,723 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 15:45:15,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 15:45:15,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 15:45:15,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-02 15:45:15,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-12-02 15:45:15,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-12-02 15:45:15,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-12-02 15:45:15,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 15:45:15,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 15:45:15,818 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 15:45:15,820 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 15:45:16,210 INFO L? ?]: Removed 94 outVars from TransFormulas that were not future-live. [2024-12-02 15:45:16,210 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 15:45:16,220 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 15:45:16,220 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 15:45:16,220 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:45:16 BoogieIcfgContainer [2024-12-02 15:45:16,220 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 15:45:16,222 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 15:45:16,222 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 15:45:16,226 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 15:45:16,226 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:45:15" (1/3) ... [2024-12-02 15:45:16,227 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39c1bd80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:45:16, skipping insertion in model container [2024-12-02 15:45:16,227 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:45:15" (2/3) ... [2024-12-02 15:45:16,227 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39c1bd80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:45:16, skipping insertion in model container [2024-12-02 15:45:16,227 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:45:16" (3/3) ... [2024-12-02 15:45:16,228 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-a_file-5.i [2024-12-02 15:45:16,239 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 15:45:16,240 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_variablewrapping_wrapper-a_file-5.i that has 2 procedures, 96 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 15:45:16,285 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 15:45:16,296 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;@5b9e7778, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 15:45:16,296 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 15:45:16,299 INFO L276 IsEmpty]: Start isEmpty. Operand has 96 states, 73 states have (on average 1.3287671232876712) internal successors, (97), 74 states have internal predecessors, (97), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-12-02 15:45:16,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-12-02 15:45:16,310 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:45:16,310 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:45:16,311 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:45:16,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:45:16,315 INFO L85 PathProgramCache]: Analyzing trace with hash 779273670, now seen corresponding path program 1 times [2024-12-02 15:45:16,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:45:16,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67713838] [2024-12-02 15:45:16,330 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:16,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:45:16,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:16,600 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2024-12-02 15:45:16,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:45:16,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67713838] [2024-12-02 15:45:16,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67713838] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:45:16,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [988487437] [2024-12-02 15:45:16,602 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:16,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:45:16,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47329ae0-e2bd-438c-9638-bba91b3bb716/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:45:16,604 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47329ae0-e2bd-438c-9638-bba91b3bb716/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:45:16,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47329ae0-e2bd-438c-9638-bba91b3bb716/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 15:45:16,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:16,801 INFO L256 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 15:45:16,809 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:45:16,830 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2024-12-02 15:45:16,830 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 15:45:16,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [988487437] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:45:16,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 15:45:16,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-12-02 15:45:16,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107243574] [2024-12-02 15:45:16,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:45:16,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 15:45:16,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:45:16,850 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 15:45:16,850 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 15:45:16,852 INFO L87 Difference]: Start difference. First operand has 96 states, 73 states have (on average 1.3287671232876712) internal successors, (97), 74 states have internal predecessors, (97), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2024-12-02 15:45:16,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:45:16,877 INFO L93 Difference]: Finished difference Result 185 states and 288 transitions. [2024-12-02 15:45:16,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 15:45:16,879 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) Word has length 148 [2024-12-02 15:45:16,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:45:16,884 INFO L225 Difference]: With dead ends: 185 [2024-12-02 15:45:16,885 INFO L226 Difference]: Without dead ends: 92 [2024-12-02 15:45:16,888 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 15:45:16,890 INFO L435 NwaCegarLoop]: 130 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:45:16,891 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:45:16,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-12-02 15:45:16,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2024-12-02 15:45:16,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 70 states have (on average 1.2857142857142858) internal successors, (90), 70 states have internal predecessors, (90), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-12-02 15:45:16,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 130 transitions. [2024-12-02 15:45:16,924 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 130 transitions. Word has length 148 [2024-12-02 15:45:16,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:45:16,924 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 130 transitions. [2024-12-02 15:45:16,924 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2024-12-02 15:45:16,925 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 130 transitions. [2024-12-02 15:45:16,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-12-02 15:45:16,928 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:45:16,928 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:45:16,934 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47329ae0-e2bd-438c-9638-bba91b3bb716/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 15:45:17,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47329ae0-e2bd-438c-9638-bba91b3bb716/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-12-02 15:45:17,129 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:45:17,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:45:17,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1856104722, now seen corresponding path program 1 times [2024-12-02 15:45:17,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:45:17,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508508160] [2024-12-02 15:45:17,129 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:17,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:45:17,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:17,543 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2024-12-02 15:45:17,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:45:17,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508508160] [2024-12-02 15:45:17,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508508160] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:45:17,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456485139] [2024-12-02 15:45:17,544 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:17,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:45:17,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47329ae0-e2bd-438c-9638-bba91b3bb716/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:45:17,546 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47329ae0-e2bd-438c-9638-bba91b3bb716/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:45:17,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47329ae0-e2bd-438c-9638-bba91b3bb716/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 15:45:17,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:17,719 INFO L256 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 15:45:17,724 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:45:17,768 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 15:45:17,768 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 15:45:17,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [456485139] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:45:17,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 15:45:17,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-12-02 15:45:17,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298422148] [2024-12-02 15:45:17,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:45:17,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 15:45:17,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:45:17,770 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 15:45:17,770 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 15:45:17,770 INFO L87 Difference]: Start difference. First operand 92 states and 130 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 15:45:17,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:45:17,825 INFO L93 Difference]: Finished difference Result 184 states and 261 transitions. [2024-12-02 15:45:17,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 15:45:17,826 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 148 [2024-12-02 15:45:17,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:45:17,827 INFO L225 Difference]: With dead ends: 184 [2024-12-02 15:45:17,828 INFO L226 Difference]: Without dead ends: 95 [2024-12-02 15:45:17,828 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 15:45:17,829 INFO L435 NwaCegarLoop]: 127 mSDtfsCounter, 1 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:45:17,829 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 370 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:45:17,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-12-02 15:45:17,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 94. [2024-12-02 15:45:17,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 72 states have (on average 1.2777777777777777) internal successors, (92), 72 states have internal predecessors, (92), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-12-02 15:45:17,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 132 transitions. [2024-12-02 15:45:17,840 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 132 transitions. Word has length 148 [2024-12-02 15:45:17,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:45:17,841 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 132 transitions. [2024-12-02 15:45:17,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 15:45:17,842 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 132 transitions. [2024-12-02 15:45:17,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-12-02 15:45:17,844 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:45:17,844 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:45:17,853 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47329ae0-e2bd-438c-9638-bba91b3bb716/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 15:45:18,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47329ae0-e2bd-438c-9638-bba91b3bb716/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:45:18,044 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:45:18,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:45:18,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1176046352, now seen corresponding path program 1 times [2024-12-02 15:45:18,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:45:18,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545139146] [2024-12-02 15:45:18,045 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:18,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:45:18,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:18,247 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2024-12-02 15:45:18,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:45:18,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545139146] [2024-12-02 15:45:18,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545139146] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:45:18,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353166196] [2024-12-02 15:45:18,247 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:18,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:45:18,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47329ae0-e2bd-438c-9638-bba91b3bb716/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:45:18,249 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47329ae0-e2bd-438c-9638-bba91b3bb716/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:45:18,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47329ae0-e2bd-438c-9638-bba91b3bb716/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 15:45:18,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:18,432 INFO L256 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 15:45:18,435 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:45:18,465 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 15:45:18,465 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 15:45:18,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [353166196] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:45:18,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 15:45:18,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-12-02 15:45:18,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779114201] [2024-12-02 15:45:18,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:45:18,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 15:45:18,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:45:18,467 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 15:45:18,467 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 15:45:18,467 INFO L87 Difference]: Start difference. First operand 94 states and 132 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 15:45:18,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:45:18,503 INFO L93 Difference]: Finished difference Result 188 states and 265 transitions. [2024-12-02 15:45:18,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 15:45:18,504 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 148 [2024-12-02 15:45:18,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:45:18,506 INFO L225 Difference]: With dead ends: 188 [2024-12-02 15:45:18,506 INFO L226 Difference]: Without dead ends: 97 [2024-12-02 15:45:18,507 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 15:45:18,508 INFO L435 NwaCegarLoop]: 127 mSDtfsCounter, 1 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:45:18,508 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 371 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:45:18,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-12-02 15:45:18,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 96. [2024-12-02 15:45:18,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 74 states have (on average 1.2702702702702702) internal successors, (94), 74 states have internal predecessors, (94), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-12-02 15:45:18,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 134 transitions. [2024-12-02 15:45:18,518 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 134 transitions. Word has length 148 [2024-12-02 15:45:18,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:45:18,519 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 134 transitions. [2024-12-02 15:45:18,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 15:45:18,519 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 134 transitions. [2024-12-02 15:45:18,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-12-02 15:45:18,521 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:45:18,521 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:45:18,528 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47329ae0-e2bd-438c-9638-bba91b3bb716/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 15:45:18,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47329ae0-e2bd-438c-9638-bba91b3bb716/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:45:18,722 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:45:18,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:45:18,723 INFO L85 PathProgramCache]: Analyzing trace with hash 598961010, now seen corresponding path program 1 times [2024-12-02 15:45:18,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:45:18,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779865988] [2024-12-02 15:45:18,723 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:18,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:45:18,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:18,952 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2024-12-02 15:45:18,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:45:18,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779865988] [2024-12-02 15:45:18,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779865988] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:45:18,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [940076622] [2024-12-02 15:45:18,953 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:18,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:45:18,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47329ae0-e2bd-438c-9638-bba91b3bb716/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:45:18,955 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47329ae0-e2bd-438c-9638-bba91b3bb716/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:45:18,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47329ae0-e2bd-438c-9638-bba91b3bb716/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 15:45:19,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:19,134 INFO L256 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 15:45:19,138 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:45:19,166 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 15:45:19,166 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 15:45:19,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [940076622] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:45:19,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 15:45:19,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-12-02 15:45:19,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393053066] [2024-12-02 15:45:19,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:45:19,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 15:45:19,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:45:19,168 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 15:45:19,168 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 15:45:19,168 INFO L87 Difference]: Start difference. First operand 96 states and 134 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 15:45:19,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:45:19,192 INFO L93 Difference]: Finished difference Result 192 states and 269 transitions. [2024-12-02 15:45:19,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 15:45:19,193 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 148 [2024-12-02 15:45:19,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:45:19,194 INFO L225 Difference]: With dead ends: 192 [2024-12-02 15:45:19,195 INFO L226 Difference]: Without dead ends: 99 [2024-12-02 15:45:19,195 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 15:45:19,196 INFO L435 NwaCegarLoop]: 127 mSDtfsCounter, 1 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:45:19,196 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 373 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:45:19,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-12-02 15:45:19,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 98. [2024-12-02 15:45:19,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 76 states have (on average 1.263157894736842) internal successors, (96), 76 states have internal predecessors, (96), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-12-02 15:45:19,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 136 transitions. [2024-12-02 15:45:19,203 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 136 transitions. Word has length 148 [2024-12-02 15:45:19,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:45:19,204 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 136 transitions. [2024-12-02 15:45:19,204 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 15:45:19,204 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 136 transitions. [2024-12-02 15:45:19,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-12-02 15:45:19,206 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:45:19,206 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:45:19,215 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47329ae0-e2bd-438c-9638-bba91b3bb716/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 15:45:19,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47329ae0-e2bd-438c-9638-bba91b3bb716/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:45:19,407 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:45:19,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:45:19,407 INFO L85 PathProgramCache]: Analyzing trace with hash 600808052, now seen corresponding path program 1 times [2024-12-02 15:45:19,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:45:19,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555082223] [2024-12-02 15:45:19,407 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:19,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:45:19,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:19,621 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2024-12-02 15:45:19,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:45:19,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555082223] [2024-12-02 15:45:19,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555082223] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:45:19,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995551219] [2024-12-02 15:45:19,621 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:19,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:45:19,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47329ae0-e2bd-438c-9638-bba91b3bb716/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:45:19,623 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47329ae0-e2bd-438c-9638-bba91b3bb716/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:45:19,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47329ae0-e2bd-438c-9638-bba91b3bb716/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 15:45:19,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:19,805 INFO L256 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 15:45:19,810 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:45:19,841 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 15:45:19,841 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 15:45:19,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995551219] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:45:19,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 15:45:19,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2024-12-02 15:45:19,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963114408] [2024-12-02 15:45:19,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:45:19,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 15:45:19,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:45:19,843 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 15:45:19,843 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-02 15:45:19,843 INFO L87 Difference]: Start difference. First operand 98 states and 136 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 15:45:19,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:45:19,870 INFO L93 Difference]: Finished difference Result 195 states and 272 transitions. [2024-12-02 15:45:19,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 15:45:19,871 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 148 [2024-12-02 15:45:19,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:45:19,873 INFO L225 Difference]: With dead ends: 195 [2024-12-02 15:45:19,873 INFO L226 Difference]: Without dead ends: 100 [2024-12-02 15:45:19,873 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-02 15:45:19,874 INFO L435 NwaCegarLoop]: 128 mSDtfsCounter, 0 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:45:19,874 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 373 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:45:19,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-12-02 15:45:19,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2024-12-02 15:45:19,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 78 states have (on average 1.2564102564102564) internal successors, (98), 78 states have internal predecessors, (98), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-12-02 15:45:19,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 138 transitions. [2024-12-02 15:45:19,883 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 138 transitions. Word has length 148 [2024-12-02 15:45:19,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:45:19,884 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 138 transitions. [2024-12-02 15:45:19,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 15:45:19,884 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 138 transitions. [2024-12-02 15:45:19,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-12-02 15:45:19,886 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:45:19,886 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:45:19,896 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47329ae0-e2bd-438c-9638-bba91b3bb716/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 15:45:20,087 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47329ae0-e2bd-438c-9638-bba91b3bb716/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:45:20,087 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:45:20,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:45:20,088 INFO L85 PathProgramCache]: Analyzing trace with hash -104984721, now seen corresponding path program 1 times [2024-12-02 15:45:20,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:45:20,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245591702] [2024-12-02 15:45:20,088 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:20,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:45:20,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:20,374 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 15:45:20,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:45:20,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245591702] [2024-12-02 15:45:20,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245591702] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:45:20,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:45:20,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:45:20,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448909522] [2024-12-02 15:45:20,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:45:20,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:45:20,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:45:20,376 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:45:20,376 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:45:20,376 INFO L87 Difference]: Start difference. First operand 100 states and 138 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 15:45:20,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:45:20,443 INFO L93 Difference]: Finished difference Result 197 states and 273 transitions. [2024-12-02 15:45:20,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:45:20,444 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 150 [2024-12-02 15:45:20,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:45:20,445 INFO L225 Difference]: With dead ends: 197 [2024-12-02 15:45:20,445 INFO L226 Difference]: Without dead ends: 100 [2024-12-02 15:45:20,445 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 [2024-12-02 15:45:20,446 INFO L435 NwaCegarLoop]: 128 mSDtfsCounter, 0 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:45:20,446 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 225 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:45:20,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-12-02 15:45:20,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2024-12-02 15:45:20,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 78 states have (on average 1.2435897435897436) internal successors, (97), 78 states have internal predecessors, (97), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-12-02 15:45:20,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 137 transitions. [2024-12-02 15:45:20,454 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 137 transitions. Word has length 150 [2024-12-02 15:45:20,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:45:20,455 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 137 transitions. [2024-12-02 15:45:20,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 15:45:20,455 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 137 transitions. [2024-12-02 15:45:20,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-12-02 15:45:20,457 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:45:20,457 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:45:20,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 15:45:20,457 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:45:20,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:45:20,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1126053075, now seen corresponding path program 1 times [2024-12-02 15:45:20,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:45:20,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118987476] [2024-12-02 15:45:20,458 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:20,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:45:20,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:20,781 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 15:45:20,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:45:20,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118987476] [2024-12-02 15:45:20,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118987476] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:45:20,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:45:20,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:45:20,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988483569] [2024-12-02 15:45:20,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:45:20,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:45:20,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:45:20,782 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:45:20,783 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:45:20,783 INFO L87 Difference]: Start difference. First operand 100 states and 137 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 15:45:20,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:45:20,798 INFO L93 Difference]: Finished difference Result 197 states and 271 transitions. [2024-12-02 15:45:20,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:45:20,799 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 150 [2024-12-02 15:45:20,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:45:20,801 INFO L225 Difference]: With dead ends: 197 [2024-12-02 15:45:20,801 INFO L226 Difference]: Without dead ends: 100 [2024-12-02 15:45:20,801 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 [2024-12-02 15:45:20,802 INFO L435 NwaCegarLoop]: 127 mSDtfsCounter, 0 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:45:20,802 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 251 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:45:20,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-12-02 15:45:20,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2024-12-02 15:45:20,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 78 states have (on average 1.2307692307692308) internal successors, (96), 78 states have internal predecessors, (96), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-12-02 15:45:20,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 136 transitions. [2024-12-02 15:45:20,810 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 136 transitions. Word has length 150 [2024-12-02 15:45:20,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:45:20,810 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 136 transitions. [2024-12-02 15:45:20,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 15:45:20,810 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 136 transitions. [2024-12-02 15:45:20,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-12-02 15:45:20,812 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:45:20,812 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:45:20,812 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 15:45:20,813 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:45:20,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:45:20,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1163211282, now seen corresponding path program 1 times [2024-12-02 15:45:20,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:45:20,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147098069] [2024-12-02 15:45:20,813 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:20,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:45:20,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:21,001 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 15:45:21,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:45:21,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147098069] [2024-12-02 15:45:21,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147098069] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:45:21,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:45:21,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:45:21,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685399696] [2024-12-02 15:45:21,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:45:21,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:45:21,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:45:21,003 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:45:21,003 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:45:21,003 INFO L87 Difference]: Start difference. First operand 100 states and 136 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 15:45:21,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:45:21,066 INFO L93 Difference]: Finished difference Result 197 states and 269 transitions. [2024-12-02 15:45:21,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:45:21,067 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 152 [2024-12-02 15:45:21,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:45:21,068 INFO L225 Difference]: With dead ends: 197 [2024-12-02 15:45:21,068 INFO L226 Difference]: Without dead ends: 100 [2024-12-02 15:45:21,069 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 [2024-12-02 15:45:21,069 INFO L435 NwaCegarLoop]: 126 mSDtfsCounter, 0 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:45:21,069 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 222 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:45:21,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-12-02 15:45:21,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2024-12-02 15:45:21,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 78 states have (on average 1.2179487179487178) internal successors, (95), 78 states have internal predecessors, (95), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-12-02 15:45:21,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 135 transitions. [2024-12-02 15:45:21,075 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 135 transitions. Word has length 152 [2024-12-02 15:45:21,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:45:21,076 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 135 transitions. [2024-12-02 15:45:21,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 15:45:21,076 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 135 transitions. [2024-12-02 15:45:21,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-12-02 15:45:21,077 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:45:21,077 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:45:21,077 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 15:45:21,078 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:45:21,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:45:21,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1585913108, now seen corresponding path program 1 times [2024-12-02 15:45:21,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:45:21,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729061707] [2024-12-02 15:45:21,078 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:21,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:45:21,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:22,584 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 15:45:22,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:45:22,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729061707] [2024-12-02 15:45:22,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729061707] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:45:22,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:45:22,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 15:45:22,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531800083] [2024-12-02 15:45:22,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:45:22,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 15:45:22,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:45:22,586 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 15:45:22,586 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-12-02 15:45:22,586 INFO L87 Difference]: Start difference. First operand 100 states and 135 transitions. Second operand has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 9 states have internal predecessors, (55), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 15:45:23,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:45:23,334 INFO L93 Difference]: Finished difference Result 352 states and 481 transitions. [2024-12-02 15:45:23,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 15:45:23,335 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 9 states have internal predecessors, (55), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 152 [2024-12-02 15:45:23,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:45:23,336 INFO L225 Difference]: With dead ends: 352 [2024-12-02 15:45:23,337 INFO L226 Difference]: Without dead ends: 255 [2024-12-02 15:45:23,337 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2024-12-02 15:45:23,338 INFO L435 NwaCegarLoop]: 150 mSDtfsCounter, 179 mSDsluCounter, 685 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 835 SdHoareTripleChecker+Invalid, 616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 15:45:23,338 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 835 Invalid, 616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 608 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 15:45:23,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2024-12-02 15:45:23,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 191. [2024-12-02 15:45:23,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 148 states have (on average 1.2094594594594594) internal successors, (179), 148 states have internal predecessors, (179), 40 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-12-02 15:45:23,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 259 transitions. [2024-12-02 15:45:23,356 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 259 transitions. Word has length 152 [2024-12-02 15:45:23,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:45:23,357 INFO L471 AbstractCegarLoop]: Abstraction has 191 states and 259 transitions. [2024-12-02 15:45:23,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 9 states have internal predecessors, (55), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 15:45:23,357 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 259 transitions. [2024-12-02 15:45:23,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-12-02 15:45:23,359 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:45:23,359 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:45:23,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 15:45:23,359 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:45:23,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:45:23,360 INFO L85 PathProgramCache]: Analyzing trace with hash 2129939654, now seen corresponding path program 1 times [2024-12-02 15:45:23,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:45:23,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102264431] [2024-12-02 15:45:23,360 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:23,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:45:23,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:23,583 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2024-12-02 15:45:23,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:45:23,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102264431] [2024-12-02 15:45:23,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102264431] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:45:23,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672180791] [2024-12-02 15:45:23,583 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:23,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:45:23,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47329ae0-e2bd-438c-9638-bba91b3bb716/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:45:23,585 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47329ae0-e2bd-438c-9638-bba91b3bb716/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:45:23,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47329ae0-e2bd-438c-9638-bba91b3bb716/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 15:45:23,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:23,767 INFO L256 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 15:45:23,772 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:45:23,796 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 15:45:23,796 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 15:45:23,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672180791] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:45:23,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 15:45:23,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2024-12-02 15:45:23,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278523878] [2024-12-02 15:45:23,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:45:23,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 15:45:23,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:45:23,798 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 15:45:23,798 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-12-02 15:45:23,798 INFO L87 Difference]: Start difference. First operand 191 states and 259 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 15:45:23,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:45:23,838 INFO L93 Difference]: Finished difference Result 385 states and 523 transitions. [2024-12-02 15:45:23,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 15:45:23,838 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 152 [2024-12-02 15:45:23,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:45:23,841 INFO L225 Difference]: With dead ends: 385 [2024-12-02 15:45:23,841 INFO L226 Difference]: Without dead ends: 197 [2024-12-02 15:45:23,842 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-12-02 15:45:23,842 INFO L435 NwaCegarLoop]: 124 mSDtfsCounter, 0 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:45:23,843 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 479 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:45:23,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2024-12-02 15:45:23,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2024-12-02 15:45:23,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 154 states have (on average 1.2012987012987013) internal successors, (185), 154 states have internal predecessors, (185), 40 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-12-02 15:45:23,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 265 transitions. [2024-12-02 15:45:23,863 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 265 transitions. Word has length 152 [2024-12-02 15:45:23,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:45:23,864 INFO L471 AbstractCegarLoop]: Abstraction has 197 states and 265 transitions. [2024-12-02 15:45:23,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 15:45:23,864 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 265 transitions. [2024-12-02 15:45:23,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-12-02 15:45:23,866 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:45:23,866 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:45:23,875 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47329ae0-e2bd-438c-9638-bba91b3bb716/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 15:45:24,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47329ae0-e2bd-438c-9638-bba91b3bb716/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-12-02 15:45:24,066 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:45:24,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:45:24,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1295740087, now seen corresponding path program 1 times [2024-12-02 15:45:24,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:45:24,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134193427] [2024-12-02 15:45:24,067 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:24,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:45:24,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:25,558 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 15:45:25,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:45:25,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134193427] [2024-12-02 15:45:25,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134193427] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:45:25,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:45:25,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 15:45:25,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721424383] [2024-12-02 15:45:25,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:45:25,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 15:45:25,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:45:25,559 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 15:45:25,559 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-12-02 15:45:25,560 INFO L87 Difference]: Start difference. First operand 197 states and 265 transitions. Second operand has 10 states, 9 states have (on average 6.222222222222222) internal successors, (56), 10 states have internal predecessors, (56), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2024-12-02 15:45:25,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:45:25,913 INFO L93 Difference]: Finished difference Result 363 states and 492 transitions. [2024-12-02 15:45:25,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-12-02 15:45:25,913 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.222222222222222) internal successors, (56), 10 states have internal predecessors, (56), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) Word has length 153 [2024-12-02 15:45:25,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:45:25,915 INFO L225 Difference]: With dead ends: 363 [2024-12-02 15:45:25,916 INFO L226 Difference]: Without dead ends: 263 [2024-12-02 15:45:25,916 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2024-12-02 15:45:25,917 INFO L435 NwaCegarLoop]: 182 mSDtfsCounter, 116 mSDsluCounter, 1062 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 1244 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 15:45:25,917 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 1244 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 15:45:25,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2024-12-02 15:45:25,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 101. [2024-12-02 15:45:25,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 79 states have (on average 1.2025316455696202) internal successors, (95), 79 states have internal predecessors, (95), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-12-02 15:45:25,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 135 transitions. [2024-12-02 15:45:25,931 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 135 transitions. Word has length 153 [2024-12-02 15:45:25,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:45:25,932 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 135 transitions. [2024-12-02 15:45:25,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.222222222222222) internal successors, (56), 10 states have internal predecessors, (56), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2024-12-02 15:45:25,932 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 135 transitions. [2024-12-02 15:45:25,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-12-02 15:45:25,934 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:45:25,934 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:45:25,934 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 15:45:25,934 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:45:25,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:45:25,935 INFO L85 PathProgramCache]: Analyzing trace with hash 482934228, now seen corresponding path program 1 times [2024-12-02 15:45:25,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:45:25,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113396383] [2024-12-02 15:45:25,935 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:25,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:45:25,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:26,246 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 15:45:26,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:45:26,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113396383] [2024-12-02 15:45:26,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113396383] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:45:26,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:45:26,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 15:45:26,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307087759] [2024-12-02 15:45:26,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:45:26,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 15:45:26,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:45:26,247 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 15:45:26,247 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 15:45:26,247 INFO L87 Difference]: Start difference. First operand 101 states and 135 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 15:45:26,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:45:26,323 INFO L93 Difference]: Finished difference Result 199 states and 267 transitions. [2024-12-02 15:45:26,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 15:45:26,324 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 154 [2024-12-02 15:45:26,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:45:26,325 INFO L225 Difference]: With dead ends: 199 [2024-12-02 15:45:26,325 INFO L226 Difference]: Without dead ends: 101 [2024-12-02 15:45:26,325 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 15:45:26,326 INFO L435 NwaCegarLoop]: 123 mSDtfsCounter, 0 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:45:26,326 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 324 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:45:26,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-12-02 15:45:26,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2024-12-02 15:45:26,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 79 states have (on average 1.1898734177215189) internal successors, (94), 79 states have internal predecessors, (94), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-12-02 15:45:26,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 134 transitions. [2024-12-02 15:45:26,335 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 134 transitions. Word has length 154 [2024-12-02 15:45:26,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:45:26,335 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 134 transitions. [2024-12-02 15:45:26,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 15:45:26,336 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 134 transitions. [2024-12-02 15:45:26,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-12-02 15:45:26,337 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:45:26,338 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:45:26,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 15:45:26,338 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:45:26,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:45:26,338 INFO L85 PathProgramCache]: Analyzing trace with hash -2027570099, now seen corresponding path program 1 times [2024-12-02 15:45:26,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:45:26,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897973430] [2024-12-02 15:45:26,339 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:26,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:45:26,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:26,700 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 15:45:26,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:45:26,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897973430] [2024-12-02 15:45:26,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897973430] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:45:26,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:45:26,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 15:45:26,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158478891] [2024-12-02 15:45:26,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:45:26,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 15:45:26,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:45:26,702 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 15:45:26,702 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-02 15:45:26,702 INFO L87 Difference]: Start difference. First operand 101 states and 134 transitions. Second operand has 6 states, 5 states have (on average 11.8) internal successors, (59), 6 states have internal predecessors, (59), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2024-12-02 15:45:26,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:45:26,754 INFO L93 Difference]: Finished difference Result 240 states and 314 transitions. [2024-12-02 15:45:26,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 15:45:26,754 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.8) internal successors, (59), 6 states have internal predecessors, (59), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) Word has length 156 [2024-12-02 15:45:26,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:45:26,756 INFO L225 Difference]: With dead ends: 240 [2024-12-02 15:45:26,756 INFO L226 Difference]: Without dead ends: 142 [2024-12-02 15:45:26,756 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-12-02 15:45:26,757 INFO L435 NwaCegarLoop]: 120 mSDtfsCounter, 66 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:45:26,757 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 463 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:45:26,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-12-02 15:45:26,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 117. [2024-12-02 15:45:26,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 95 states have (on average 1.1789473684210525) internal successors, (112), 95 states have internal predecessors, (112), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-12-02 15:45:26,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 152 transitions. [2024-12-02 15:45:26,766 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 152 transitions. Word has length 156 [2024-12-02 15:45:26,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:45:26,767 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 152 transitions. [2024-12-02 15:45:26,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.8) internal successors, (59), 6 states have internal predecessors, (59), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2024-12-02 15:45:26,767 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 152 transitions. [2024-12-02 15:45:26,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-12-02 15:45:26,768 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:45:26,768 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:45:26,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 15:45:26,768 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:45:26,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:45:26,769 INFO L85 PathProgramCache]: Analyzing trace with hash 119101899, now seen corresponding path program 1 times [2024-12-02 15:45:26,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:45:26,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190109316] [2024-12-02 15:45:26,769 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:26,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:45:26,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:27,398 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 15:45:27,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:45:27,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190109316] [2024-12-02 15:45:27,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190109316] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:45:27,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:45:27,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 15:45:27,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530523108] [2024-12-02 15:45:27,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:45:27,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 15:45:27,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:45:27,400 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 15:45:27,400 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 15:45:27,400 INFO L87 Difference]: Start difference. First operand 117 states and 152 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 15:45:27,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:45:27,625 INFO L93 Difference]: Finished difference Result 144 states and 186 transitions. [2024-12-02 15:45:27,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 15:45:27,626 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 156 [2024-12-02 15:45:27,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:45:27,627 INFO L225 Difference]: With dead ends: 144 [2024-12-02 15:45:27,627 INFO L226 Difference]: Without dead ends: 142 [2024-12-02 15:45:27,627 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-12-02 15:45:27,628 INFO L435 NwaCegarLoop]: 129 mSDtfsCounter, 50 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 664 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 15:45:27,628 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 664 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 15:45:27,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-12-02 15:45:27,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 141. [2024-12-02 15:45:27,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 110 states have (on average 1.1545454545454545) internal successors, (127), 111 states have internal predecessors, (127), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2024-12-02 15:45:27,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 183 transitions. [2024-12-02 15:45:27,641 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 183 transitions. Word has length 156 [2024-12-02 15:45:27,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:45:27,641 INFO L471 AbstractCegarLoop]: Abstraction has 141 states and 183 transitions. [2024-12-02 15:45:27,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 15:45:27,642 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 183 transitions. [2024-12-02 15:45:27,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-12-02 15:45:27,642 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:45:27,643 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:45:27,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 15:45:27,643 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:45:27,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:45:27,643 INFO L85 PathProgramCache]: Analyzing trace with hash 120948941, now seen corresponding path program 1 times [2024-12-02 15:45:27,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:45:27,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007832837] [2024-12-02 15:45:27,643 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:27,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:45:27,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:28,046 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 15:45:28,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:45:28,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007832837] [2024-12-02 15:45:28,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007832837] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:45:28,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:45:28,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 15:45:28,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938686372] [2024-12-02 15:45:28,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:45:28,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 15:45:28,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:45:28,048 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 15:45:28,048 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 15:45:28,048 INFO L87 Difference]: Start difference. First operand 141 states and 183 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 15:45:28,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:45:28,241 INFO L93 Difference]: Finished difference Result 304 states and 396 transitions. [2024-12-02 15:45:28,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 15:45:28,241 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 156 [2024-12-02 15:45:28,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:45:28,243 INFO L225 Difference]: With dead ends: 304 [2024-12-02 15:45:28,243 INFO L226 Difference]: Without dead ends: 183 [2024-12-02 15:45:28,243 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-12-02 15:45:28,244 INFO L435 NwaCegarLoop]: 168 mSDtfsCounter, 97 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:45:28,244 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 555 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:45:28,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2024-12-02 15:45:28,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 169. [2024-12-02 15:45:28,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 125 states have (on average 1.128) internal successors, (141), 126 states have internal predecessors, (141), 40 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (40), 39 states have call predecessors, (40), 40 states have call successors, (40) [2024-12-02 15:45:28,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 221 transitions. [2024-12-02 15:45:28,266 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 221 transitions. Word has length 156 [2024-12-02 15:45:28,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:45:28,267 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 221 transitions. [2024-12-02 15:45:28,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 15:45:28,267 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 221 transitions. [2024-12-02 15:45:28,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-12-02 15:45:28,268 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:45:28,268 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:45:28,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 15:45:28,268 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:45:28,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:45:28,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1895956303, now seen corresponding path program 1 times [2024-12-02 15:45:28,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:45:28,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277396129] [2024-12-02 15:45:28,269 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:28,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:45:28,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:28,577 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 15:45:28,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:45:28,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277396129] [2024-12-02 15:45:28,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277396129] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:45:28,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:45:28,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 15:45:28,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906162892] [2024-12-02 15:45:28,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:45:28,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 15:45:28,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:45:28,579 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 15:45:28,579 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 15:45:28,579 INFO L87 Difference]: Start difference. First operand 169 states and 221 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 15:45:28,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:45:28,631 INFO L93 Difference]: Finished difference Result 313 states and 405 transitions. [2024-12-02 15:45:28,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 15:45:28,632 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 156 [2024-12-02 15:45:28,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:45:28,633 INFO L225 Difference]: With dead ends: 313 [2024-12-02 15:45:28,633 INFO L226 Difference]: Without dead ends: 192 [2024-12-02 15:45:28,634 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-12-02 15:45:28,634 INFO L435 NwaCegarLoop]: 204 mSDtfsCounter, 109 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 686 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:45:28,635 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 686 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:45:28,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2024-12-02 15:45:28,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 169. [2024-12-02 15:45:28,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 125 states have (on average 1.12) internal successors, (140), 126 states have internal predecessors, (140), 40 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (40), 39 states have call predecessors, (40), 40 states have call successors, (40) [2024-12-02 15:45:28,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 220 transitions. [2024-12-02 15:45:28,655 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 220 transitions. Word has length 156 [2024-12-02 15:45:28,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:45:28,655 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 220 transitions. [2024-12-02 15:45:28,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 15:45:28,656 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 220 transitions. [2024-12-02 15:45:28,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-12-02 15:45:28,656 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:45:28,657 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:45:28,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-02 15:45:28,657 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:45:28,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:45:28,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1718952623, now seen corresponding path program 1 times [2024-12-02 15:45:28,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:45:28,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620302780] [2024-12-02 15:45:28,658 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:28,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:45:28,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:28,812 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2024-12-02 15:45:28,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:45:28,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620302780] [2024-12-02 15:45:28,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620302780] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:45:28,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2026428253] [2024-12-02 15:45:28,812 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:28,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:45:28,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47329ae0-e2bd-438c-9638-bba91b3bb716/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:45:28,814 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47329ae0-e2bd-438c-9638-bba91b3bb716/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:45:28,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47329ae0-e2bd-438c-9638-bba91b3bb716/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 15:45:29,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:29,006 INFO L256 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 15:45:29,009 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:45:29,028 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 15:45:29,028 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 15:45:29,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2026428253] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:45:29,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 15:45:29,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2024-12-02 15:45:29,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804305941] [2024-12-02 15:45:29,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:45:29,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 15:45:29,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:45:29,029 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 15:45:29,029 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-12-02 15:45:29,030 INFO L87 Difference]: Start difference. First operand 169 states and 220 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 15:45:29,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:45:29,060 INFO L93 Difference]: Finished difference Result 293 states and 377 transitions. [2024-12-02 15:45:29,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 15:45:29,061 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 156 [2024-12-02 15:45:29,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:45:29,063 INFO L225 Difference]: With dead ends: 293 [2024-12-02 15:45:29,063 INFO L226 Difference]: Without dead ends: 172 [2024-12-02 15:45:29,063 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-12-02 15:45:29,064 INFO L435 NwaCegarLoop]: 122 mSDtfsCounter, 0 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:45:29,064 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 472 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:45:29,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2024-12-02 15:45:29,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2024-12-02 15:45:29,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 128 states have (on average 1.1171875) internal successors, (143), 129 states have internal predecessors, (143), 40 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (40), 39 states have call predecessors, (40), 40 states have call successors, (40) [2024-12-02 15:45:29,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 223 transitions. [2024-12-02 15:45:29,081 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 223 transitions. Word has length 156 [2024-12-02 15:45:29,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:45:29,082 INFO L471 AbstractCegarLoop]: Abstraction has 172 states and 223 transitions. [2024-12-02 15:45:29,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 15:45:29,082 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 223 transitions. [2024-12-02 15:45:29,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-12-02 15:45:29,083 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:45:29,083 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:45:29,093 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47329ae0-e2bd-438c-9638-bba91b3bb716/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 15:45:29,284 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47329ae0-e2bd-438c-9638-bba91b3bb716/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-12-02 15:45:29,284 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:45:29,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:45:29,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1578336880, now seen corresponding path program 1 times [2024-12-02 15:45:29,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:45:29,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519409716] [2024-12-02 15:45:29,284 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:29,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:45:29,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:29,929 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 15:45:29,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:45:29,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519409716] [2024-12-02 15:45:29,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519409716] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:45:29,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:45:29,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 15:45:29,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699099675] [2024-12-02 15:45:29,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:45:29,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 15:45:29,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:45:29,930 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 15:45:29,930 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-12-02 15:45:29,931 INFO L87 Difference]: Start difference. First operand 172 states and 223 transitions. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 15:45:30,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:45:30,224 INFO L93 Difference]: Finished difference Result 351 states and 445 transitions. [2024-12-02 15:45:30,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 15:45:30,225 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 157 [2024-12-02 15:45:30,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:45:30,227 INFO L225 Difference]: With dead ends: 351 [2024-12-02 15:45:30,227 INFO L226 Difference]: Without dead ends: 227 [2024-12-02 15:45:30,227 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-12-02 15:45:30,228 INFO L435 NwaCegarLoop]: 171 mSDtfsCounter, 68 mSDsluCounter, 995 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 1166 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 15:45:30,228 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 1166 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 15:45:30,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2024-12-02 15:45:30,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 173. [2024-12-02 15:45:30,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 129 states have (on average 1.1162790697674418) internal successors, (144), 130 states have internal predecessors, (144), 40 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (40), 39 states have call predecessors, (40), 40 states have call successors, (40) [2024-12-02 15:45:30,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 224 transitions. [2024-12-02 15:45:30,248 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 224 transitions. Word has length 157 [2024-12-02 15:45:30,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:45:30,249 INFO L471 AbstractCegarLoop]: Abstraction has 173 states and 224 transitions. [2024-12-02 15:45:30,249 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 15:45:30,249 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 224 transitions. [2024-12-02 15:45:30,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-12-02 15:45:30,250 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:45:30,250 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:45:30,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-12-02 15:45:30,250 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:45:30,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:45:30,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1917553494, now seen corresponding path program 1 times [2024-12-02 15:45:30,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:45:30,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543368061] [2024-12-02 15:45:30,251 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:30,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:45:30,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-12-02 15:45:30,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1810562903] [2024-12-02 15:45:30,405 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:30,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:45:30,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47329ae0-e2bd-438c-9638-bba91b3bb716/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:45:30,407 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47329ae0-e2bd-438c-9638-bba91b3bb716/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:45:30,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47329ae0-e2bd-438c-9638-bba91b3bb716/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 15:45:30,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:30,682 INFO L256 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-12-02 15:45:30,687 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:45:30,932 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 15:45:30,933 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 25 [2024-12-02 15:45:30,988 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 15:45:30,988 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 25 [2024-12-02 15:45:31,054 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 15:45:31,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 16 [2024-12-02 15:45:31,685 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 42 proven. 376 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2024-12-02 15:45:31,685 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:45:32,232 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 15:45:32,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:45:32,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543368061] [2024-12-02 15:45:32,233 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-12-02 15:45:32,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1810562903] [2024-12-02 15:45:32,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1810562903] provided 1 perfect and 1 imperfect interpolant sequences [2024-12-02 15:45:32,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 15:45:32,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 14 [2024-12-02 15:45:32,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551573693] [2024-12-02 15:45:32,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:45:32,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 15:45:32,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:45:32,235 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 15:45:32,235 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2024-12-02 15:45:32,235 INFO L87 Difference]: Start difference. First operand 173 states and 224 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 15:45:33,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:45:33,085 INFO L93 Difference]: Finished difference Result 382 states and 476 transitions. [2024-12-02 15:45:33,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 15:45:33,086 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 158 [2024-12-02 15:45:33,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:45:33,088 INFO L225 Difference]: With dead ends: 382 [2024-12-02 15:45:33,088 INFO L226 Difference]: Without dead ends: 257 [2024-12-02 15:45:33,089 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2024-12-02 15:45:33,089 INFO L435 NwaCegarLoop]: 109 mSDtfsCounter, 96 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 15:45:33,089 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 307 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 15:45:33,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2024-12-02 15:45:33,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 164. [2024-12-02 15:45:33,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 141 states have (on average 1.1347517730496455) internal successors, (160), 141 states have internal predecessors, (160), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-12-02 15:45:33,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 200 transitions. [2024-12-02 15:45:33,106 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 200 transitions. Word has length 158 [2024-12-02 15:45:33,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:45:33,107 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 200 transitions. [2024-12-02 15:45:33,107 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 15:45:33,107 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 200 transitions. [2024-12-02 15:45:33,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-12-02 15:45:33,108 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:45:33,108 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:45:33,119 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47329ae0-e2bd-438c-9638-bba91b3bb716/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 15:45:33,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47329ae0-e2bd-438c-9638-bba91b3bb716/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:45:33,309 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:45:33,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:45:33,309 INFO L85 PathProgramCache]: Analyzing trace with hash 869317995, now seen corresponding path program 1 times [2024-12-02 15:45:33,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:45:33,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217970373] [2024-12-02 15:45:33,310 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:33,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:45:33,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:34,081 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 15:45:34,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:45:34,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217970373] [2024-12-02 15:45:34,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217970373] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:45:34,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:45:34,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 15:45:34,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070556277] [2024-12-02 15:45:34,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:45:34,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 15:45:34,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:45:34,082 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 15:45:34,082 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 15:45:34,083 INFO L87 Difference]: Start difference. First operand 164 states and 200 transitions. Second operand has 8 states, 6 states have (on average 10.333333333333334) internal successors, (62), 8 states have internal predecessors, (62), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 3 states have call successors, (20) [2024-12-02 15:45:34,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:45:34,268 INFO L93 Difference]: Finished difference Result 391 states and 472 transitions. [2024-12-02 15:45:34,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 15:45:34,268 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 10.333333333333334) internal successors, (62), 8 states have internal predecessors, (62), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 3 states have call successors, (20) Word has length 159 [2024-12-02 15:45:34,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:45:34,270 INFO L225 Difference]: With dead ends: 391 [2024-12-02 15:45:34,270 INFO L226 Difference]: Without dead ends: 230 [2024-12-02 15:45:34,270 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-12-02 15:45:34,271 INFO L435 NwaCegarLoop]: 152 mSDtfsCounter, 45 mSDsluCounter, 772 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 924 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:45:34,271 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 924 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:45:34,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2024-12-02 15:45:34,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 194. [2024-12-02 15:45:34,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 171 states have (on average 1.1345029239766082) internal successors, (194), 171 states have internal predecessors, (194), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-12-02 15:45:34,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 234 transitions. [2024-12-02 15:45:34,281 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 234 transitions. Word has length 159 [2024-12-02 15:45:34,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:45:34,282 INFO L471 AbstractCegarLoop]: Abstraction has 194 states and 234 transitions. [2024-12-02 15:45:34,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 10.333333333333334) internal successors, (62), 8 states have internal predecessors, (62), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 3 states have call successors, (20) [2024-12-02 15:45:34,282 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 234 transitions. [2024-12-02 15:45:34,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-12-02 15:45:34,282 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:45:34,283 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:45:34,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-12-02 15:45:34,283 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:45:34,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:45:34,283 INFO L85 PathProgramCache]: Analyzing trace with hash 826392251, now seen corresponding path program 1 times [2024-12-02 15:45:34,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:45:34,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954909987] [2024-12-02 15:45:34,283 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:34,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:45:34,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:35,682 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 15:45:35,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:45:35,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954909987] [2024-12-02 15:45:35,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954909987] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:45:35,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:45:35,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-12-02 15:45:35,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566150268] [2024-12-02 15:45:35,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:45:35,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 15:45:35,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:45:35,683 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 15:45:35,683 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-12-02 15:45:35,684 INFO L87 Difference]: Start difference. First operand 194 states and 234 transitions. Second operand has 14 states, 12 states have (on average 5.25) internal successors, (63), 14 states have internal predecessors, (63), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 3 states have call successors, (20) [2024-12-02 15:45:36,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:45:36,709 INFO L93 Difference]: Finished difference Result 582 states and 703 transitions. [2024-12-02 15:45:36,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-12-02 15:45:36,709 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 5.25) internal successors, (63), 14 states have internal predecessors, (63), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 3 states have call successors, (20) Word has length 160 [2024-12-02 15:45:36,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:45:36,711 INFO L225 Difference]: With dead ends: 582 [2024-12-02 15:45:36,711 INFO L226 Difference]: Without dead ends: 391 [2024-12-02 15:45:36,712 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2024-12-02 15:45:36,712 INFO L435 NwaCegarLoop]: 141 mSDtfsCounter, 142 mSDsluCounter, 944 mSDsCounter, 0 mSdLazyCounter, 1139 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1085 SdHoareTripleChecker+Invalid, 1145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 15:45:36,712 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 1085 Invalid, 1145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1139 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 15:45:36,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2024-12-02 15:45:36,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 381. [2024-12-02 15:45:36,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 321 states have (on average 1.1059190031152648) internal successors, (355), 322 states have internal predecessors, (355), 53 states have call successors, (53), 6 states have call predecessors, (53), 6 states have return successors, (53), 52 states have call predecessors, (53), 53 states have call successors, (53) [2024-12-02 15:45:36,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 461 transitions. [2024-12-02 15:45:36,736 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 461 transitions. Word has length 160 [2024-12-02 15:45:36,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:45:36,736 INFO L471 AbstractCegarLoop]: Abstraction has 381 states and 461 transitions. [2024-12-02 15:45:36,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 5.25) internal successors, (63), 14 states have internal predecessors, (63), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 3 states have call successors, (20) [2024-12-02 15:45:36,736 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 461 transitions. [2024-12-02 15:45:36,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-12-02 15:45:36,737 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:45:36,737 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:45:36,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-12-02 15:45:36,737 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:45:36,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:45:36,738 INFO L85 PathProgramCache]: Analyzing trace with hash 239586237, now seen corresponding path program 1 times [2024-12-02 15:45:36,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:45:36,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836261282] [2024-12-02 15:45:36,738 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:36,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:45:36,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:37,419 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 15:45:37,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:45:37,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836261282] [2024-12-02 15:45:37,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836261282] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:45:37,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:45:37,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 15:45:37,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147911133] [2024-12-02 15:45:37,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:45:37,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 15:45:37,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:45:37,421 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 15:45:37,421 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 15:45:37,421 INFO L87 Difference]: Start difference. First operand 381 states and 461 transitions. Second operand has 8 states, 5 states have (on average 12.6) internal successors, (63), 8 states have internal predecessors, (63), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 4 states have call successors, (20) [2024-12-02 15:45:37,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:45:37,771 INFO L93 Difference]: Finished difference Result 880 states and 1062 transitions. [2024-12-02 15:45:37,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 15:45:37,772 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 5 states have (on average 12.6) internal successors, (63), 8 states have internal predecessors, (63), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 4 states have call successors, (20) Word has length 160 [2024-12-02 15:45:37,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:45:37,775 INFO L225 Difference]: With dead ends: 880 [2024-12-02 15:45:37,775 INFO L226 Difference]: Without dead ends: 502 [2024-12-02 15:45:37,776 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-12-02 15:45:37,778 INFO L435 NwaCegarLoop]: 206 mSDtfsCounter, 80 mSDsluCounter, 895 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 1101 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 15:45:37,778 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 1101 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 15:45:37,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2024-12-02 15:45:37,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 498. [2024-12-02 15:45:37,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 416 states have (on average 1.09375) internal successors, (455), 418 states have internal predecessors, (455), 72 states have call successors, (72), 9 states have call predecessors, (72), 9 states have return successors, (72), 70 states have call predecessors, (72), 72 states have call successors, (72) [2024-12-02 15:45:37,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 599 transitions. [2024-12-02 15:45:37,813 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 599 transitions. Word has length 160 [2024-12-02 15:45:37,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:45:37,813 INFO L471 AbstractCegarLoop]: Abstraction has 498 states and 599 transitions. [2024-12-02 15:45:37,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 5 states have (on average 12.6) internal successors, (63), 8 states have internal predecessors, (63), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 4 states have call successors, (20) [2024-12-02 15:45:37,813 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 599 transitions. [2024-12-02 15:45:37,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-12-02 15:45:37,814 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:45:37,814 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:45:37,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-12-02 15:45:37,814 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:45:37,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:45:37,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1527992125, now seen corresponding path program 1 times [2024-12-02 15:45:37,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:45:37,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758820203] [2024-12-02 15:45:37,815 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:37,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:45:37,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:38,665 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 15:45:38,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:45:38,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758820203] [2024-12-02 15:45:38,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758820203] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:45:38,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:45:38,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 15:45:38,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504992710] [2024-12-02 15:45:38,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:45:38,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 15:45:38,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:45:38,667 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 15:45:38,667 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 15:45:38,667 INFO L87 Difference]: Start difference. First operand 498 states and 599 transitions. Second operand has 8 states, 5 states have (on average 12.6) internal successors, (63), 8 states have internal predecessors, (63), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 4 states have call successors, (20) [2024-12-02 15:45:39,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:45:39,025 INFO L93 Difference]: Finished difference Result 1110 states and 1340 transitions. [2024-12-02 15:45:39,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 15:45:39,025 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 5 states have (on average 12.6) internal successors, (63), 8 states have internal predecessors, (63), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 4 states have call successors, (20) Word has length 160 [2024-12-02 15:45:39,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:45:39,029 INFO L225 Difference]: With dead ends: 1110 [2024-12-02 15:45:39,029 INFO L226 Difference]: Without dead ends: 615 [2024-12-02 15:45:39,031 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-12-02 15:45:39,031 INFO L435 NwaCegarLoop]: 151 mSDtfsCounter, 82 mSDsluCounter, 621 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 15:45:39,031 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 772 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 15:45:39,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2024-12-02 15:45:39,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 546. [2024-12-02 15:45:39,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 446 states have (on average 1.0807174887892377) internal successors, (482), 449 states have internal predecessors, (482), 88 states have call successors, (88), 11 states have call predecessors, (88), 11 states have return successors, (88), 85 states have call predecessors, (88), 88 states have call successors, (88) [2024-12-02 15:45:39,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 658 transitions. [2024-12-02 15:45:39,113 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 658 transitions. Word has length 160 [2024-12-02 15:45:39,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:45:39,113 INFO L471 AbstractCegarLoop]: Abstraction has 546 states and 658 transitions. [2024-12-02 15:45:39,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 5 states have (on average 12.6) internal successors, (63), 8 states have internal predecessors, (63), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 4 states have call successors, (20) [2024-12-02 15:45:39,114 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 658 transitions. [2024-12-02 15:45:39,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-12-02 15:45:39,115 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:45:39,115 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:45:39,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-12-02 15:45:39,115 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:45:39,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:45:39,116 INFO L85 PathProgramCache]: Analyzing trace with hash 941186111, now seen corresponding path program 1 times [2024-12-02 15:45:39,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:45:39,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426000152] [2024-12-02 15:45:39,116 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:39,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:45:39,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:40,910 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 15:45:40,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:45:40,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426000152] [2024-12-02 15:45:40,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426000152] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:45:40,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:45:40,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-12-02 15:45:40,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604089918] [2024-12-02 15:45:40,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:45:40,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 15:45:40,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:45:40,912 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 15:45:40,912 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-12-02 15:45:40,912 INFO L87 Difference]: Start difference. First operand 546 states and 658 transitions. Second operand has 14 states, 12 states have (on average 5.25) internal successors, (63), 14 states have internal predecessors, (63), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 3 states have call successors, (20) [2024-12-02 15:45:42,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:45:42,079 INFO L93 Difference]: Finished difference Result 1123 states and 1359 transitions. [2024-12-02 15:45:42,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-12-02 15:45:42,080 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 5.25) internal successors, (63), 14 states have internal predecessors, (63), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 3 states have call successors, (20) Word has length 160 [2024-12-02 15:45:42,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:45:42,083 INFO L225 Difference]: With dead ends: 1123 [2024-12-02 15:45:42,083 INFO L226 Difference]: Without dead ends: 580 [2024-12-02 15:45:42,085 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=75, Invalid=387, Unknown=0, NotChecked=0, Total=462 [2024-12-02 15:45:42,085 INFO L435 NwaCegarLoop]: 144 mSDtfsCounter, 115 mSDsluCounter, 909 mSDsCounter, 0 mSdLazyCounter, 1037 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 1053 SdHoareTripleChecker+Invalid, 1043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-12-02 15:45:42,086 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 1053 Invalid, 1043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1037 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-12-02 15:45:42,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2024-12-02 15:45:42,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 571. [2024-12-02 15:45:42,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 456 states have (on average 1.0745614035087718) internal successors, (490), 460 states have internal predecessors, (490), 101 states have call successors, (101), 13 states have call predecessors, (101), 13 states have return successors, (101), 97 states have call predecessors, (101), 101 states have call successors, (101) [2024-12-02 15:45:42,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 692 transitions. [2024-12-02 15:45:42,204 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 692 transitions. Word has length 160 [2024-12-02 15:45:42,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:45:42,204 INFO L471 AbstractCegarLoop]: Abstraction has 571 states and 692 transitions. [2024-12-02 15:45:42,204 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 5.25) internal successors, (63), 14 states have internal predecessors, (63), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 3 states have call successors, (20) [2024-12-02 15:45:42,204 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 692 transitions. [2024-12-02 15:45:42,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-12-02 15:45:42,205 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:45:42,206 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:45:42,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-12-02 15:45:42,206 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:45:42,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:45:42,206 INFO L85 PathProgramCache]: Analyzing trace with hash -34453229, now seen corresponding path program 1 times [2024-12-02 15:45:42,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:45:42,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477728331] [2024-12-02 15:45:42,207 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:42,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:45:42,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:42,441 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 15:45:42,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:45:42,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477728331] [2024-12-02 15:45:42,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477728331] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:45:42,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:45:42,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 15:45:42,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447366660] [2024-12-02 15:45:42,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:45:42,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 15:45:42,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:45:42,443 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 15:45:42,443 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-02 15:45:42,443 INFO L87 Difference]: Start difference. First operand 571 states and 692 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-12-02 15:45:42,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:45:42,826 INFO L93 Difference]: Finished difference Result 1297 states and 1548 transitions. [2024-12-02 15:45:42,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 15:45:42,827 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 160 [2024-12-02 15:45:42,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:45:42,831 INFO L225 Difference]: With dead ends: 1297 [2024-12-02 15:45:42,831 INFO L226 Difference]: Without dead ends: 992 [2024-12-02 15:45:42,832 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2024-12-02 15:45:42,833 INFO L435 NwaCegarLoop]: 96 mSDtfsCounter, 225 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 15:45:42,833 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 455 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 15:45:42,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 992 states. [2024-12-02 15:45:42,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 992 to 765. [2024-12-02 15:45:42,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 765 states, 621 states have (on average 1.0821256038647342) internal successors, (672), 624 states have internal predecessors, (672), 128 states have call successors, (128), 15 states have call predecessors, (128), 15 states have return successors, (128), 125 states have call predecessors, (128), 128 states have call successors, (128) [2024-12-02 15:45:42,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 928 transitions. [2024-12-02 15:45:42,900 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 928 transitions. Word has length 160 [2024-12-02 15:45:42,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:45:42,900 INFO L471 AbstractCegarLoop]: Abstraction has 765 states and 928 transitions. [2024-12-02 15:45:42,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-12-02 15:45:42,900 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 928 transitions. [2024-12-02 15:45:42,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-12-02 15:45:42,902 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:45:42,902 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:45:42,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-12-02 15:45:42,902 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:45:42,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:45:42,902 INFO L85 PathProgramCache]: Analyzing trace with hash -780761969, now seen corresponding path program 1 times [2024-12-02 15:45:42,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:45:42,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918929712] [2024-12-02 15:45:42,903 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:42,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:45:42,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:43,569 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 15:45:43,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:45:43,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918929712] [2024-12-02 15:45:43,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918929712] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:45:43,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:45:43,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 15:45:43,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452977467] [2024-12-02 15:45:43,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:45:43,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 15:45:43,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:45:43,571 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 15:45:43,571 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-12-02 15:45:43,571 INFO L87 Difference]: Start difference. First operand 765 states and 928 transitions. Second operand has 10 states, 9 states have (on average 7.0) internal successors, (63), 10 states have internal predecessors, (63), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2024-12-02 15:45:43,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:45:43,885 INFO L93 Difference]: Finished difference Result 1340 states and 1618 transitions. [2024-12-02 15:45:43,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-12-02 15:45:43,886 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.0) internal successors, (63), 10 states have internal predecessors, (63), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) Word has length 160 [2024-12-02 15:45:43,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:45:43,889 INFO L225 Difference]: With dead ends: 1340 [2024-12-02 15:45:43,889 INFO L226 Difference]: Without dead ends: 875 [2024-12-02 15:45:43,890 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-12-02 15:45:43,890 INFO L435 NwaCegarLoop]: 163 mSDtfsCounter, 62 mSDsluCounter, 1104 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 1267 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 15:45:43,890 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 1267 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 15:45:43,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2024-12-02 15:45:43,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 729. [2024-12-02 15:45:43,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 729 states, 585 states have (on average 1.0769230769230769) internal successors, (630), 588 states have internal predecessors, (630), 128 states have call successors, (128), 15 states have call predecessors, (128), 15 states have return successors, (128), 125 states have call predecessors, (128), 128 states have call successors, (128) [2024-12-02 15:45:43,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 886 transitions. [2024-12-02 15:45:43,955 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 886 transitions. Word has length 160 [2024-12-02 15:45:43,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:45:43,955 INFO L471 AbstractCegarLoop]: Abstraction has 729 states and 886 transitions. [2024-12-02 15:45:43,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.0) internal successors, (63), 10 states have internal predecessors, (63), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2024-12-02 15:45:43,955 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 886 transitions. [2024-12-02 15:45:43,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-12-02 15:45:43,956 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:45:43,957 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:45:43,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-12-02 15:45:43,957 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:45:43,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:45:43,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1312179362, now seen corresponding path program 1 times [2024-12-02 15:45:43,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:45:43,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226278350] [2024-12-02 15:45:43,957 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:43,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:45:43,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:45:44,226 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 15:45:44,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:45:44,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226278350] [2024-12-02 15:45:44,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226278350] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:45:44,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:45:44,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 15:45:44,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628726732] [2024-12-02 15:45:44,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:45:44,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 15:45:44,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:45:44,228 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 15:45:44,228 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 15:45:44,228 INFO L87 Difference]: Start difference. First operand 729 states and 886 transitions. Second operand has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2024-12-02 15:45:44,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:45:44,333 INFO L93 Difference]: Finished difference Result 1228 states and 1475 transitions. [2024-12-02 15:45:44,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 15:45:44,334 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) Word has length 161 [2024-12-02 15:45:44,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:45:44,337 INFO L225 Difference]: With dead ends: 1228 [2024-12-02 15:45:44,337 INFO L226 Difference]: Without dead ends: 799 [2024-12-02 15:45:44,338 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-12-02 15:45:44,338 INFO L435 NwaCegarLoop]: 157 mSDtfsCounter, 38 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 707 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:45:44,338 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 707 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:45:44,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2024-12-02 15:45:44,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 729. [2024-12-02 15:45:44,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 729 states, 585 states have (on average 1.0598290598290598) internal successors, (620), 588 states have internal predecessors, (620), 128 states have call successors, (128), 15 states have call predecessors, (128), 15 states have return successors, (128), 125 states have call predecessors, (128), 128 states have call successors, (128) [2024-12-02 15:45:44,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 876 transitions. [2024-12-02 15:45:44,409 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 876 transitions. Word has length 161 [2024-12-02 15:45:44,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:45:44,409 INFO L471 AbstractCegarLoop]: Abstraction has 729 states and 876 transitions. [2024-12-02 15:45:44,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2024-12-02 15:45:44,409 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 876 transitions. [2024-12-02 15:45:44,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-12-02 15:45:44,410 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:45:44,410 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:45:44,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-12-02 15:45:44,410 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:45:44,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:45:44,410 INFO L85 PathProgramCache]: Analyzing trace with hash 807872812, now seen corresponding path program 1 times [2024-12-02 15:45:44,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:45:44,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472875660] [2024-12-02 15:45:44,411 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:45:44,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:45:44,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:56:49,574 WARN L286 SmtUtils]: Spent 16.15s on a formula simplification that was a NOOP. DAG size: 27 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 15:57:17,980 WARN L286 SmtUtils]: Spent 7.61s on a formula simplification that was a NOOP. DAG size: 27 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 15:57:33,824 WARN L286 SmtUtils]: Spent 7.84s on a formula simplification that was a NOOP. DAG size: 27 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 15:57:59,702 WARN L286 SmtUtils]: Spent 6.12s on a formula simplification that was a NOOP. DAG size: 27 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 15:58:25,086 WARN L286 SmtUtils]: Spent 6.28s on a formula simplification that was a NOOP. DAG size: 27 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 15:58:37,764 WARN L286 SmtUtils]: Spent 8.04s on a formula simplification that was a NOOP. DAG size: 27 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 15:58:54,532 WARN L286 SmtUtils]: Spent 9.12s on a formula simplification that was a NOOP. DAG size: 38 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 15:59:06,715 WARN L286 SmtUtils]: Spent 12.17s on a formula simplification that was a NOOP. DAG size: 27 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 15:59:34,297 WARN L286 SmtUtils]: Spent 11.48s on a formula simplification that was a NOOP. DAG size: 27 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 15:59:50,461 WARN L286 SmtUtils]: Spent 16.15s on a formula simplification that was a NOOP. DAG size: 27 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)