./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem18_label08.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem18_label08.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c626e4c9f6513844bf7d51bb173012ea230226871c7268fdff12ea42500a40a8 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-16 15:22:08,861 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 15:22:08,899 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-16 15:22:08,903 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 15:22:08,903 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 15:22:08,918 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 15:22:08,919 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 15:22:08,920 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 15:22:08,920 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 15:22:08,920 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 15:22:08,921 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 15:22:08,921 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 15:22:08,921 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 15:22:08,922 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 15:22:08,922 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 15:22:08,922 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 15:22:08,922 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 15:22:08,922 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-16 15:22:08,922 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-16 15:22:08,922 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-16 15:22:08,922 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 15:22:08,922 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 15:22:08,922 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 15:22:08,923 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 15:22:08,923 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-16 15:22:08,923 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 15:22:08,923 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 15:22:08,923 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 15:22:08,923 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 15:22:08,923 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 15:22:08,923 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 15:22:08,923 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 15:22:08,923 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 15:22:08,924 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 15:22:08,924 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 15:22:08,924 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 15:22:08,924 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 15:22:08,924 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-16 15:22:08,924 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-16 15:22:08,924 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 15:22:08,924 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 15:22:08,924 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 15:22:08,924 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 15:22:08,924 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c626e4c9f6513844bf7d51bb173012ea230226871c7268fdff12ea42500a40a8 [2025-03-16 15:22:09,147 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 15:22:09,153 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 15:22:09,154 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 15:22:09,155 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 15:22:09,156 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 15:22:09,157 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem18_label08.c [2025-03-16 15:22:10,267 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/593cd571c/835da1f3c9b44b75890a24394c887abe/FLAGddda3446c [2025-03-16 15:22:10,287 ERROR L? ?]: Error during toolchain job processing: java.lang.NullPointerException: Cannot invoke "String.equalsIgnoreCase(String)" because "kindStr" is null at org.eclipse.cdt.internal.core.model.PathEntry.kindFromString(PathEntry.java:80) at org.eclipse.cdt.internal.core.model.DefaultPathEntryStore.decodePathEntry(DefaultPathEntryStore.java:127) at org.eclipse.cdt.internal.core.model.DefaultPathEntryStore.getRawPathEntries(DefaultPathEntryStore.java:97) at org.eclipse.cdt.internal.core.model.PathEntryStoreProxy.getRawPathEntries(PathEntryStoreProxy.java:102) at org.eclipse.cdt.internal.core.model.PathEntryManager.getRawPathEntries(PathEntryManager.java:666) at org.eclipse.cdt.core.model.CoreModel.getRawPathEntries(CoreModel.java:937) at org.eclipse.cdt.core.model.CoreModel.oldIsScannerInformationEmpty(CoreModel.java:1307) at org.eclipse.cdt.core.model.CoreModel.isScannerInformationEmpty(CoreModel.java:1252) at org.eclipse.cdt.internal.core.pdom.indexer.ProjectIndexerInputAdapter.isFileBuildConfigured(ProjectIndexerInputAdapter.java:267) at org.eclipse.cdt.internal.core.pdom.AbstractIndexerTask.isRequiredInIndex(AbstractIndexerTask.java:748) at org.eclipse.cdt.internal.core.pdom.AbstractIndexerTask.extractFiles(AbstractIndexerTask.java:667) at org.eclipse.cdt.internal.core.pdom.AbstractIndexerTask.runTask(AbstractIndexerTask.java:558) at org.eclipse.cdt.internal.core.pdom.indexer.PDOMIndexerTask.run(PDOMIndexerTask.java:164) at org.eclipse.cdt.internal.core.pdom.PDOMIndexerJob.run(PDOMIndexerJob.java:160) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2025-03-16 15:22:10,669 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 15:22:10,670 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem18_label08.c [2025-03-16 15:22:10,695 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/593cd571c/835da1f3c9b44b75890a24394c887abe/FLAGddda3446c [2025-03-16 15:22:10,709 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/593cd571c/835da1f3c9b44b75890a24394c887abe [2025-03-16 15:22:10,712 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 15:22:10,713 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 15:22:10,714 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 15:22:10,715 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 15:22:10,717 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 15:22:10,718 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 03:22:10" (1/1) ... [2025-03-16 15:22:10,718 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cb18559 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:22:10, skipping insertion in model container [2025-03-16 15:22:10,718 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 03:22:10" (1/1) ... [2025-03-16 15:22:10,775 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 15:22:10,895 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem18_label08.c[2490,2503] [2025-03-16 15:22:11,250 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 15:22:11,258 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 15:22:11,270 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem18_label08.c[2490,2503] [2025-03-16 15:22:11,453 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 15:22:11,473 INFO L204 MainTranslator]: Completed translation [2025-03-16 15:22:11,473 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:22:11 WrapperNode [2025-03-16 15:22:11,474 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 15:22:11,475 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 15:22:11,475 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 15:22:11,475 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 15:22:11,481 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:22:11" (1/1) ... [2025-03-16 15:22:11,511 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:22:11" (1/1) ... [2025-03-16 15:22:11,660 INFO L138 Inliner]: procedures = 16, calls = 10, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 4132 [2025-03-16 15:22:11,661 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 15:22:11,661 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 15:22:11,661 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 15:22:11,661 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 15:22:11,667 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:22:11" (1/1) ... [2025-03-16 15:22:11,668 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:22:11" (1/1) ... [2025-03-16 15:22:11,694 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:22:11" (1/1) ... [2025-03-16 15:22:11,775 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-16 15:22:11,775 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:22:11" (1/1) ... [2025-03-16 15:22:11,775 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:22:11" (1/1) ... [2025-03-16 15:22:11,826 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:22:11" (1/1) ... [2025-03-16 15:22:11,836 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:22:11" (1/1) ... [2025-03-16 15:22:11,849 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:22:11" (1/1) ... [2025-03-16 15:22:11,860 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:22:11" (1/1) ... [2025-03-16 15:22:11,879 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 15:22:11,880 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 15:22:11,881 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 15:22:11,881 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 15:22:11,882 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:22:11" (1/1) ... [2025-03-16 15:22:11,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 15:22:11,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 15:22:11,909 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-16 15:22:11,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-16 15:22:11,931 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 15:22:11,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-16 15:22:11,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 15:22:11,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 15:22:12,016 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 15:22:12,018 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 15:22:14,685 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1647: havoc calculate_output_#t~ret8#1; [2025-03-16 15:22:14,686 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L3060: havoc calculate_output2_#t~ret9#1; [2025-03-16 15:22:14,799 INFO L? ?]: Removed 639 outVars from TransFormulas that were not future-live. [2025-03-16 15:22:14,799 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 15:22:14,816 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 15:22:14,816 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 15:22:14,816 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 03:22:14 BoogieIcfgContainer [2025-03-16 15:22:14,816 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 15:22:14,818 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 15:22:14,818 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 15:22:14,821 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 15:22:14,821 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 03:22:10" (1/3) ... [2025-03-16 15:22:14,822 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48c97a91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 03:22:14, skipping insertion in model container [2025-03-16 15:22:14,822 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 03:22:11" (2/3) ... [2025-03-16 15:22:14,822 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48c97a91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 03:22:14, skipping insertion in model container [2025-03-16 15:22:14,822 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 03:22:14" (3/3) ... [2025-03-16 15:22:14,823 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem18_label08.c [2025-03-16 15:22:14,836 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 15:22:14,837 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem18_label08.c that has 1 procedures, 696 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-16 15:22:14,898 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 15:22:14,908 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;@6d82e9db, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 15:22:14,908 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-16 15:22:14,914 INFO L276 IsEmpty]: Start isEmpty. Operand has 696 states, 694 states have (on average 1.9913544668587897) internal successors, (1382), 695 states have internal predecessors, (1382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:22:14,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-03-16 15:22:14,918 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:22:14,919 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:22:14,919 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:22:14,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:22:14,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1115187512, now seen corresponding path program 1 times [2025-03-16 15:22:14,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:22:14,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019708136] [2025-03-16 15:22:14,928 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:22:14,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:22:14,973 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-16 15:22:14,983 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-16 15:22:14,984 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:22:14,984 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:22:15,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 15:22:15,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:22:15,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019708136] [2025-03-16 15:22:15,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019708136] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:22:15,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 15:22:15,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-16 15:22:15,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283460776] [2025-03-16 15:22:15,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:22:15,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-16 15:22:15,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:22:15,040 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-16 15:22:15,041 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-16 15:22:15,044 INFO L87 Difference]: Start difference. First operand has 696 states, 694 states have (on average 1.9913544668587897) internal successors, (1382), 695 states have internal predecessors, (1382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:22:15,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:22:15,102 INFO L93 Difference]: Finished difference Result 1391 states and 2763 transitions. [2025-03-16 15:22:15,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-16 15:22:15,107 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2025-03-16 15:22:15,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:22:15,115 INFO L225 Difference]: With dead ends: 1391 [2025-03-16 15:22:15,115 INFO L226 Difference]: Without dead ends: 693 [2025-03-16 15:22:15,119 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-16 15:22:15,124 INFO L435 NwaCegarLoop]: 1320 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, 1320 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 [2025-03-16 15:22:15,124 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1320 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 15:22:15,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2025-03-16 15:22:15,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 693. [2025-03-16 15:22:15,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 693 states, 692 states have (on average 1.903179190751445) internal successors, (1317), 692 states have internal predecessors, (1317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:22:15,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1317 transitions. [2025-03-16 15:22:15,171 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1317 transitions. Word has length 20 [2025-03-16 15:22:15,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:22:15,171 INFO L471 AbstractCegarLoop]: Abstraction has 693 states and 1317 transitions. [2025-03-16 15:22:15,171 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:22:15,171 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1317 transitions. [2025-03-16 15:22:15,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-03-16 15:22:15,172 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:22:15,172 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:22:15,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-16 15:22:15,172 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:22:15,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:22:15,173 INFO L85 PathProgramCache]: Analyzing trace with hash -704873493, now seen corresponding path program 1 times [2025-03-16 15:22:15,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:22:15,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667402001] [2025-03-16 15:22:15,173 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:22:15,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:22:15,178 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-16 15:22:15,193 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-16 15:22:15,197 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:22:15,197 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:22:15,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 15:22:15,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:22:15,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667402001] [2025-03-16 15:22:15,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667402001] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:22:15,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 15:22:15,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-16 15:22:15,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469443353] [2025-03-16 15:22:15,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:22:15,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 15:22:15,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:22:15,271 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 15:22:15,271 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:22:15,271 INFO L87 Difference]: Start difference. First operand 693 states and 1317 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:22:17,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:22:17,651 INFO L93 Difference]: Finished difference Result 2075 states and 3948 transitions. [2025-03-16 15:22:17,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 15:22:17,652 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2025-03-16 15:22:17,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:22:17,657 INFO L225 Difference]: With dead ends: 2075 [2025-03-16 15:22:17,657 INFO L226 Difference]: Without dead ends: 1383 [2025-03-16 15:22:17,658 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:22:17,658 INFO L435 NwaCegarLoop]: 243 mSDtfsCounter, 699 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1958 mSolverCounterSat, 907 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 699 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 2865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 907 IncrementalHoareTripleChecker+Valid, 1958 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2025-03-16 15:22:17,658 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [699 Valid, 249 Invalid, 2865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [907 Valid, 1958 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2025-03-16 15:22:17,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1383 states. [2025-03-16 15:22:17,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1383 to 1383. [2025-03-16 15:22:17,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1383 states, 1382 states have (on average 1.7344428364688858) internal successors, (2397), 1382 states have internal predecessors, (2397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:22:17,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1383 states to 1383 states and 2397 transitions. [2025-03-16 15:22:17,713 INFO L78 Accepts]: Start accepts. Automaton has 1383 states and 2397 transitions. Word has length 20 [2025-03-16 15:22:17,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:22:17,713 INFO L471 AbstractCegarLoop]: Abstraction has 1383 states and 2397 transitions. [2025-03-16 15:22:17,713 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:22:17,713 INFO L276 IsEmpty]: Start isEmpty. Operand 1383 states and 2397 transitions. [2025-03-16 15:22:17,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2025-03-16 15:22:17,714 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:22:17,715 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:22:17,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-16 15:22:17,715 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:22:17,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:22:17,719 INFO L85 PathProgramCache]: Analyzing trace with hash 261368804, now seen corresponding path program 1 times [2025-03-16 15:22:17,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:22:17,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903044596] [2025-03-16 15:22:17,719 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:22:17,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:22:17,732 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 89 statements into 1 equivalence classes. [2025-03-16 15:22:17,753 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 89 of 89 statements. [2025-03-16 15:22:17,754 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:22:17,754 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:22:17,885 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 15:22:17,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:22:17,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903044596] [2025-03-16 15:22:17,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903044596] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:22:17,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 15:22:17,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-16 15:22:17,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228538577] [2025-03-16 15:22:17,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:22:17,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 15:22:17,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:22:17,886 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 15:22:17,886 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:22:17,886 INFO L87 Difference]: Start difference. First operand 1383 states and 2397 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:22:20,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:22:20,075 INFO L93 Difference]: Finished difference Result 4145 states and 7188 transitions. [2025-03-16 15:22:20,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 15:22:20,076 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2025-03-16 15:22:20,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:22:20,084 INFO L225 Difference]: With dead ends: 4145 [2025-03-16 15:22:20,084 INFO L226 Difference]: Without dead ends: 2763 [2025-03-16 15:22:20,086 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:22:20,087 INFO L435 NwaCegarLoop]: 567 mSDtfsCounter, 676 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1710 mSolverCounterSat, 918 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 676 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 2628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 918 IncrementalHoareTripleChecker+Valid, 1710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2025-03-16 15:22:20,087 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [676 Valid, 572 Invalid, 2628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [918 Valid, 1710 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2025-03-16 15:22:20,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2763 states. [2025-03-16 15:22:20,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2763 to 2763. [2025-03-16 15:22:20,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2763 states, 2762 states have (on average 1.4308472121650977) internal successors, (3952), 2762 states have internal predecessors, (3952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:22:20,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2763 states to 2763 states and 3952 transitions. [2025-03-16 15:22:20,130 INFO L78 Accepts]: Start accepts. Automaton has 2763 states and 3952 transitions. Word has length 89 [2025-03-16 15:22:20,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:22:20,131 INFO L471 AbstractCegarLoop]: Abstraction has 2763 states and 3952 transitions. [2025-03-16 15:22:20,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:22:20,131 INFO L276 IsEmpty]: Start isEmpty. Operand 2763 states and 3952 transitions. [2025-03-16 15:22:20,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2025-03-16 15:22:20,133 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:22:20,133 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:22:20,133 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-16 15:22:20,134 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:22:20,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:22:20,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1713869324, now seen corresponding path program 1 times [2025-03-16 15:22:20,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:22:20,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804676402] [2025-03-16 15:22:20,137 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:22:20,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:22:20,152 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 105 statements into 1 equivalence classes. [2025-03-16 15:22:20,164 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 105 of 105 statements. [2025-03-16 15:22:20,164 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:22:20,164 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:22:20,381 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 15:22:20,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:22:20,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804676402] [2025-03-16 15:22:20,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804676402] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:22:20,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 15:22:20,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-16 15:22:20,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437233830] [2025-03-16 15:22:20,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:22:20,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 15:22:20,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:22:20,382 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 15:22:20,382 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:22:20,382 INFO L87 Difference]: Start difference. First operand 2763 states and 3952 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:22:22,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:22:22,450 INFO L93 Difference]: Finished difference Result 8285 states and 11853 transitions. [2025-03-16 15:22:22,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 15:22:22,453 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2025-03-16 15:22:22,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:22:22,477 INFO L225 Difference]: With dead ends: 8285 [2025-03-16 15:22:22,478 INFO L226 Difference]: Without dead ends: 5523 [2025-03-16 15:22:22,481 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:22:22,482 INFO L435 NwaCegarLoop]: 428 mSDtfsCounter, 689 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1993 mSolverCounterSat, 673 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 689 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 2666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 673 IncrementalHoareTripleChecker+Valid, 1993 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2025-03-16 15:22:22,482 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [689 Valid, 434 Invalid, 2666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [673 Valid, 1993 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2025-03-16 15:22:22,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5523 states. [2025-03-16 15:22:22,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5523 to 5523. [2025-03-16 15:22:22,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5523 states, 5522 states have (on average 1.2817819630568634) internal successors, (7078), 5522 states have internal predecessors, (7078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:22:22,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5523 states to 5523 states and 7078 transitions. [2025-03-16 15:22:22,552 INFO L78 Accepts]: Start accepts. Automaton has 5523 states and 7078 transitions. Word has length 105 [2025-03-16 15:22:22,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:22:22,553 INFO L471 AbstractCegarLoop]: Abstraction has 5523 states and 7078 transitions. [2025-03-16 15:22:22,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:22:22,553 INFO L276 IsEmpty]: Start isEmpty. Operand 5523 states and 7078 transitions. [2025-03-16 15:22:22,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2025-03-16 15:22:22,555 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:22:22,555 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:22:22,555 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-16 15:22:22,555 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:22:22,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:22:22,556 INFO L85 PathProgramCache]: Analyzing trace with hash -11681674, now seen corresponding path program 1 times [2025-03-16 15:22:22,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:22:22,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437748907] [2025-03-16 15:22:22,556 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:22:22,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:22:22,577 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 207 statements into 1 equivalence classes. [2025-03-16 15:22:22,587 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 207 of 207 statements. [2025-03-16 15:22:22,587 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:22:22,588 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:22:23,056 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-03-16 15:22:23,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:22:23,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437748907] [2025-03-16 15:22:23,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437748907] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:22:23,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 15:22:23,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 15:22:23,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826095801] [2025-03-16 15:22:23,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:22:23,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 15:22:23,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:22:23,059 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 15:22:23,059 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 15:22:23,059 INFO L87 Difference]: Start difference. First operand 5523 states and 7078 transitions. Second operand has 4 states, 4 states have (on average 47.25) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:22:25,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:22:25,662 INFO L93 Difference]: Finished difference Result 15185 states and 18703 transitions. [2025-03-16 15:22:25,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 15:22:25,662 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.25) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 207 [2025-03-16 15:22:25,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:22:25,683 INFO L225 Difference]: With dead ends: 15185 [2025-03-16 15:22:25,683 INFO L226 Difference]: Without dead ends: 9663 [2025-03-16 15:22:25,707 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-16 15:22:25,708 INFO L435 NwaCegarLoop]: 629 mSDtfsCounter, 1872 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 4378 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1872 SdHoareTripleChecker+Valid, 646 SdHoareTripleChecker+Invalid, 4483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 4378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2025-03-16 15:22:25,708 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1872 Valid, 646 Invalid, 4483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 4378 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2025-03-16 15:22:25,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9663 states. [2025-03-16 15:22:25,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9663 to 8283. [2025-03-16 15:22:25,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8283 states, 8282 states have (on average 1.215406906544313) internal successors, (10066), 8282 states have internal predecessors, (10066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:22:25,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8283 states to 8283 states and 10066 transitions. [2025-03-16 15:22:25,804 INFO L78 Accepts]: Start accepts. Automaton has 8283 states and 10066 transitions. Word has length 207 [2025-03-16 15:22:25,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:22:25,804 INFO L471 AbstractCegarLoop]: Abstraction has 8283 states and 10066 transitions. [2025-03-16 15:22:25,805 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.25) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:22:25,805 INFO L276 IsEmpty]: Start isEmpty. Operand 8283 states and 10066 transitions. [2025-03-16 15:22:25,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2025-03-16 15:22:25,808 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:22:25,808 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:22:25,808 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-16 15:22:25,809 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:22:25,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:22:25,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1363655400, now seen corresponding path program 1 times [2025-03-16 15:22:25,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:22:25,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974090968] [2025-03-16 15:22:25,810 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:22:25,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:22:25,839 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 389 statements into 1 equivalence classes. [2025-03-16 15:22:25,854 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 389 of 389 statements. [2025-03-16 15:22:25,855 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:22:25,855 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:22:26,237 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 273 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2025-03-16 15:22:26,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:22:26,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974090968] [2025-03-16 15:22:26,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974090968] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:22:26,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 15:22:26,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 15:22:26,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803444495] [2025-03-16 15:22:26,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:22:26,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 15:22:26,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:22:26,239 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 15:22:26,239 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-16 15:22:26,239 INFO L87 Difference]: Start difference. First operand 8283 states and 10066 transitions. Second operand has 4 states, 4 states have (on average 88.5) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:22:28,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:22:28,222 INFO L93 Difference]: Finished difference Result 18688 states and 22308 transitions. [2025-03-16 15:22:28,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 15:22:28,222 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 88.5) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 389 [2025-03-16 15:22:28,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:22:28,249 INFO L225 Difference]: With dead ends: 18688 [2025-03-16 15:22:28,252 INFO L226 Difference]: Without dead ends: 10353 [2025-03-16 15:22:28,257 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-16 15:22:28,257 INFO L435 NwaCegarLoop]: 623 mSDtfsCounter, 513 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 3037 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 3239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 3037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-03-16 15:22:28,259 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [513 Valid, 635 Invalid, 3239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 3037 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2025-03-16 15:22:28,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10353 states. [2025-03-16 15:22:28,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10353 to 10353. [2025-03-16 15:22:28,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10353 states, 10352 states have (on average 1.1352395672333848) internal successors, (11752), 10352 states have internal predecessors, (11752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:22:28,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10353 states to 10353 states and 11752 transitions. [2025-03-16 15:22:28,390 INFO L78 Accepts]: Start accepts. Automaton has 10353 states and 11752 transitions. Word has length 389 [2025-03-16 15:22:28,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:22:28,390 INFO L471 AbstractCegarLoop]: Abstraction has 10353 states and 11752 transitions. [2025-03-16 15:22:28,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 88.5) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:22:28,390 INFO L276 IsEmpty]: Start isEmpty. Operand 10353 states and 11752 transitions. [2025-03-16 15:22:28,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 835 [2025-03-16 15:22:28,401 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:22:28,402 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:22:28,402 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-16 15:22:28,402 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:22:28,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:22:28,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1756133043, now seen corresponding path program 1 times [2025-03-16 15:22:28,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:22:28,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225257245] [2025-03-16 15:22:28,403 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:22:28,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:22:28,450 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 834 statements into 1 equivalence classes. [2025-03-16 15:22:28,520 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 834 of 834 statements. [2025-03-16 15:22:28,520 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:22:28,520 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:22:28,972 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2025-03-16 15:22:28,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:22:28,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225257245] [2025-03-16 15:22:28,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225257245] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:22:28,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 15:22:28,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 15:22:28,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907030037] [2025-03-16 15:22:28,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:22:28,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 15:22:28,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:22:28,974 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 15:22:28,974 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:22:28,977 INFO L87 Difference]: Start difference. First operand 10353 states and 11752 transitions. Second operand has 3 states, 3 states have (on average 179.33333333333334) internal successors, (538), 3 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:22:30,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:22:30,742 INFO L93 Difference]: Finished difference Result 24845 states and 28498 transitions. [2025-03-16 15:22:30,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 15:22:30,743 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 179.33333333333334) internal successors, (538), 3 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 834 [2025-03-16 15:22:30,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:22:30,763 INFO L225 Difference]: With dead ends: 24845 [2025-03-16 15:22:30,764 INFO L226 Difference]: Without dead ends: 14493 [2025-03-16 15:22:30,770 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:22:30,771 INFO L435 NwaCegarLoop]: 312 mSDtfsCounter, 680 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1928 mSolverCounterSat, 512 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 680 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 2440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 512 IncrementalHoareTripleChecker+Valid, 1928 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-03-16 15:22:30,771 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [680 Valid, 318 Invalid, 2440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [512 Valid, 1928 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-03-16 15:22:30,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14493 states. [2025-03-16 15:22:30,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14493 to 13803. [2025-03-16 15:22:30,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13803 states, 13802 states have (on average 1.1514273293725548) internal successors, (15892), 13802 states have internal predecessors, (15892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:22:30,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13803 states to 13803 states and 15892 transitions. [2025-03-16 15:22:30,893 INFO L78 Accepts]: Start accepts. Automaton has 13803 states and 15892 transitions. Word has length 834 [2025-03-16 15:22:30,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:22:30,893 INFO L471 AbstractCegarLoop]: Abstraction has 13803 states and 15892 transitions. [2025-03-16 15:22:30,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 179.33333333333334) internal successors, (538), 3 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:22:30,894 INFO L276 IsEmpty]: Start isEmpty. Operand 13803 states and 15892 transitions. [2025-03-16 15:22:30,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 920 [2025-03-16 15:22:30,910 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:22:30,910 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:22:30,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-16 15:22:30,912 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:22:30,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:22:30,912 INFO L85 PathProgramCache]: Analyzing trace with hash 2145641540, now seen corresponding path program 1 times [2025-03-16 15:22:30,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:22:30,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339395427] [2025-03-16 15:22:30,913 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:22:30,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:22:30,970 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 919 statements into 1 equivalence classes. [2025-03-16 15:22:31,042 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 919 of 919 statements. [2025-03-16 15:22:31,043 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:22:31,043 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:22:31,568 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 467 trivial. 0 not checked. [2025-03-16 15:22:31,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:22:31,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339395427] [2025-03-16 15:22:31,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339395427] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:22:31,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 15:22:31,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-16 15:22:31,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251906584] [2025-03-16 15:22:31,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:22:31,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 15:22:31,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:22:31,570 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 15:22:31,570 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:22:31,571 INFO L87 Difference]: Start difference. First operand 13803 states and 15892 transitions. Second operand has 3 states, 3 states have (on average 179.33333333333334) internal successors, (538), 2 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:22:33,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:22:33,245 INFO L93 Difference]: Finished difference Result 34505 states and 40336 transitions. [2025-03-16 15:22:33,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 15:22:33,245 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 179.33333333333334) internal successors, (538), 2 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 919 [2025-03-16 15:22:33,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:22:33,267 INFO L225 Difference]: With dead ends: 34505 [2025-03-16 15:22:33,267 INFO L226 Difference]: Without dead ends: 20703 [2025-03-16 15:22:33,277 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:22:33,278 INFO L435 NwaCegarLoop]: 76 mSDtfsCounter, 247 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1794 mSolverCounterSat, 758 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 2552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 758 IncrementalHoareTripleChecker+Valid, 1794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-03-16 15:22:33,278 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 81 Invalid, 2552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [758 Valid, 1794 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-03-16 15:22:33,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20703 states. [2025-03-16 15:22:33,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20703 to 20703. [2025-03-16 15:22:33,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20703 states, 20702 states have (on average 1.167761568930538) internal successors, (24175), 20702 states have internal predecessors, (24175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:22:33,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20703 states to 20703 states and 24175 transitions. [2025-03-16 15:22:33,452 INFO L78 Accepts]: Start accepts. Automaton has 20703 states and 24175 transitions. Word has length 919 [2025-03-16 15:22:33,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:22:33,453 INFO L471 AbstractCegarLoop]: Abstraction has 20703 states and 24175 transitions. [2025-03-16 15:22:33,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 179.33333333333334) internal successors, (538), 2 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:22:33,455 INFO L276 IsEmpty]: Start isEmpty. Operand 20703 states and 24175 transitions. [2025-03-16 15:22:33,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 921 [2025-03-16 15:22:33,509 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:22:33,509 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:22:33,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-16 15:22:33,510 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:22:33,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:22:33,510 INFO L85 PathProgramCache]: Analyzing trace with hash -795470191, now seen corresponding path program 1 times [2025-03-16 15:22:33,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:22:33,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928218947] [2025-03-16 15:22:33,511 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:22:33,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:22:33,565 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 920 statements into 1 equivalence classes. [2025-03-16 15:22:33,599 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 920 of 920 statements. [2025-03-16 15:22:33,600 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:22:33,600 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:22:33,981 INFO L134 CoverageAnalysis]: Checked inductivity of 525 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 469 trivial. 0 not checked. [2025-03-16 15:22:33,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:22:33,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928218947] [2025-03-16 15:22:33,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928218947] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:22:33,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 15:22:33,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 15:22:33,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841813799] [2025-03-16 15:22:33,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:22:33,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 15:22:33,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:22:33,984 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 15:22:33,984 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:22:33,985 INFO L87 Difference]: Start difference. First operand 20703 states and 24175 transitions. Second operand has 3 states, 3 states have (on average 179.33333333333334) internal successors, (538), 3 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:22:35,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:22:35,595 INFO L93 Difference]: Finished difference Result 40715 states and 47655 transitions. [2025-03-16 15:22:35,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 15:22:35,596 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 179.33333333333334) internal successors, (538), 3 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 920 [2025-03-16 15:22:35,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:22:35,629 INFO L225 Difference]: With dead ends: 40715 [2025-03-16 15:22:35,629 INFO L226 Difference]: Without dead ends: 20013 [2025-03-16 15:22:35,645 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:22:35,646 INFO L435 NwaCegarLoop]: 1083 mSDtfsCounter, 675 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1882 mSolverCounterSat, 400 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 675 SdHoareTripleChecker+Valid, 1089 SdHoareTripleChecker+Invalid, 2282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 400 IncrementalHoareTripleChecker+Valid, 1882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-03-16 15:22:35,646 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [675 Valid, 1089 Invalid, 2282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [400 Valid, 1882 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-03-16 15:22:35,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20013 states. [2025-03-16 15:22:35,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20013 to 20013. [2025-03-16 15:22:35,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20013 states, 20012 states have (on average 1.10893463921647) internal successors, (22192), 20012 states have internal predecessors, (22192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:22:35,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20013 states to 20013 states and 22192 transitions. [2025-03-16 15:22:35,865 INFO L78 Accepts]: Start accepts. Automaton has 20013 states and 22192 transitions. Word has length 920 [2025-03-16 15:22:35,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:22:35,866 INFO L471 AbstractCegarLoop]: Abstraction has 20013 states and 22192 transitions. [2025-03-16 15:22:35,866 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 179.33333333333334) internal successors, (538), 3 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:22:35,866 INFO L276 IsEmpty]: Start isEmpty. Operand 20013 states and 22192 transitions. [2025-03-16 15:22:35,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 974 [2025-03-16 15:22:35,872 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:22:35,873 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:22:35,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-16 15:22:35,873 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:22:35,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:22:35,877 INFO L85 PathProgramCache]: Analyzing trace with hash -942786293, now seen corresponding path program 1 times [2025-03-16 15:22:35,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:22:35,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665711583] [2025-03-16 15:22:35,877 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:22:35,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:22:35,928 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 973 statements into 1 equivalence classes. [2025-03-16 15:22:35,958 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 973 of 973 statements. [2025-03-16 15:22:35,958 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:22:35,958 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:22:36,679 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 583 trivial. 0 not checked. [2025-03-16 15:22:36,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:22:36,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665711583] [2025-03-16 15:22:36,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665711583] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 15:22:36,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56795429] [2025-03-16 15:22:36,680 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:22:36,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 15:22:36,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 15:22:36,682 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 15:22:36,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-16 15:22:36,760 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 973 statements into 1 equivalence classes. [2025-03-16 15:22:36,871 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 973 of 973 statements. [2025-03-16 15:22:36,872 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:22:36,872 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:22:36,875 INFO L256 TraceCheckSpWp]: Trace formula consists of 1112 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-16 15:22:36,895 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 15:22:37,843 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 631 trivial. 0 not checked. [2025-03-16 15:22:37,843 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 15:22:37,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [56795429] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:22:37,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 15:22:37,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2025-03-16 15:22:37,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930644834] [2025-03-16 15:22:37,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:22:37,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 15:22:37,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:22:37,845 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 15:22:37,845 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-16 15:22:37,845 INFO L87 Difference]: Start difference. First operand 20013 states and 22192 transitions. Second operand has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 2 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:22:39,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:22:39,301 INFO L93 Difference]: Finished difference Result 50375 states and 56467 transitions. [2025-03-16 15:22:39,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 15:22:39,301 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 2 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 973 [2025-03-16 15:22:39,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:22:39,337 INFO L225 Difference]: With dead ends: 50375 [2025-03-16 15:22:39,337 INFO L226 Difference]: Without dead ends: 30363 [2025-03-16 15:22:39,352 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 975 GetRequests, 972 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-16 15:22:39,353 INFO L435 NwaCegarLoop]: 355 mSDtfsCounter, 183 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1979 mSolverCounterSat, 366 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 2345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 366 IncrementalHoareTripleChecker+Valid, 1979 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-03-16 15:22:39,354 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 361 Invalid, 2345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [366 Valid, 1979 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-03-16 15:22:39,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30363 states. [2025-03-16 15:22:39,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30363 to 26223. [2025-03-16 15:22:39,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26223 states, 26222 states have (on average 1.104416139119823) internal successors, (28960), 26222 states have internal predecessors, (28960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:22:39,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26223 states to 26223 states and 28960 transitions. [2025-03-16 15:22:39,622 INFO L78 Accepts]: Start accepts. Automaton has 26223 states and 28960 transitions. Word has length 973 [2025-03-16 15:22:39,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:22:39,623 INFO L471 AbstractCegarLoop]: Abstraction has 26223 states and 28960 transitions. [2025-03-16 15:22:39,623 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 2 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:22:39,623 INFO L276 IsEmpty]: Start isEmpty. Operand 26223 states and 28960 transitions. [2025-03-16 15:22:39,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1006 [2025-03-16 15:22:39,629 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:22:39,629 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:22:39,637 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-16 15:22:39,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-03-16 15:22:39,831 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:22:39,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:22:39,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1512871130, now seen corresponding path program 1 times [2025-03-16 15:22:39,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:22:39,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075747645] [2025-03-16 15:22:39,832 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:22:39,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:22:39,875 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1005 statements into 1 equivalence classes. [2025-03-16 15:22:39,902 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1005 of 1005 statements. [2025-03-16 15:22:39,903 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:22:39,903 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:22:40,799 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 723 trivial. 0 not checked. [2025-03-16 15:22:40,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:22:40,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075747645] [2025-03-16 15:22:40,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075747645] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:22:40,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 15:22:40,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 15:22:40,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947272218] [2025-03-16 15:22:40,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:22:40,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 15:22:40,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:22:40,802 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 15:22:40,802 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:22:40,802 INFO L87 Difference]: Start difference. First operand 26223 states and 28960 transitions. Second operand has 3 states, 3 states have (on average 179.66666666666666) internal successors, (539), 3 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:22:42,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:22:42,184 INFO L93 Difference]: Finished difference Result 52445 states and 57919 transitions. [2025-03-16 15:22:42,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 15:22:42,185 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 179.66666666666666) internal successors, (539), 3 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1005 [2025-03-16 15:22:42,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:22:42,212 INFO L225 Difference]: With dead ends: 52445 [2025-03-16 15:22:42,212 INFO L226 Difference]: Without dead ends: 26223 [2025-03-16 15:22:42,230 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:22:42,230 INFO L435 NwaCegarLoop]: 772 mSDtfsCounter, 776 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1974 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 776 SdHoareTripleChecker+Valid, 778 SdHoareTripleChecker+Invalid, 2165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 1974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-03-16 15:22:42,230 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [776 Valid, 778 Invalid, 2165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 1974 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-03-16 15:22:42,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26223 states. [2025-03-16 15:22:42,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26223 to 25533. [2025-03-16 15:22:42,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25533 states, 25532 states have (on average 1.0884380385398715) internal successors, (27790), 25532 states have internal predecessors, (27790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:22:42,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25533 states to 25533 states and 27790 transitions. [2025-03-16 15:22:42,556 INFO L78 Accepts]: Start accepts. Automaton has 25533 states and 27790 transitions. Word has length 1005 [2025-03-16 15:22:42,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:22:42,557 INFO L471 AbstractCegarLoop]: Abstraction has 25533 states and 27790 transitions. [2025-03-16 15:22:42,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 179.66666666666666) internal successors, (539), 3 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:22:42,557 INFO L276 IsEmpty]: Start isEmpty. Operand 25533 states and 27790 transitions. [2025-03-16 15:22:42,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1037 [2025-03-16 15:22:42,576 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:22:42,580 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:22:42,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-16 15:22:42,581 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:22:42,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:22:42,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1312215142, now seen corresponding path program 1 times [2025-03-16 15:22:42,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:22:42,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801135449] [2025-03-16 15:22:42,582 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:22:42,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:22:42,716 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1036 statements into 1 equivalence classes. [2025-03-16 15:22:42,781 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1036 of 1036 statements. [2025-03-16 15:22:42,782 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:22:42,782 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:22:43,430 INFO L134 CoverageAnalysis]: Checked inductivity of 859 backedges. 543 proven. 0 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2025-03-16 15:22:43,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:22:43,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801135449] [2025-03-16 15:22:43,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801135449] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:22:43,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 15:22:43,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 15:22:43,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81992199] [2025-03-16 15:22:43,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:22:43,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 15:22:43,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:22:43,433 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 15:22:43,433 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:22:43,433 INFO L87 Difference]: Start difference. First operand 25533 states and 27790 transitions. Second operand has 3 states, 3 states have (on average 240.66666666666666) internal successors, (722), 3 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:22:44,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:22:44,838 INFO L93 Difference]: Finished difference Result 52445 states and 56982 transitions. [2025-03-16 15:22:44,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 15:22:44,838 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 240.66666666666666) internal successors, (722), 3 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1036 [2025-03-16 15:22:44,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:22:44,864 INFO L225 Difference]: With dead ends: 52445 [2025-03-16 15:22:44,864 INFO L226 Difference]: Without dead ends: 26913 [2025-03-16 15:22:44,878 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:22:44,879 INFO L435 NwaCegarLoop]: 973 mSDtfsCounter, 575 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1955 mSolverCounterSat, 263 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 575 SdHoareTripleChecker+Valid, 979 SdHoareTripleChecker+Invalid, 2218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 263 IncrementalHoareTripleChecker+Valid, 1955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-03-16 15:22:44,879 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [575 Valid, 979 Invalid, 2218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [263 Valid, 1955 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-03-16 15:22:44,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26913 states. [2025-03-16 15:22:45,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26913 to 26913. [2025-03-16 15:22:45,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26913 states, 26912 states have (on average 1.0698944708680143) internal successors, (28793), 26912 states have internal predecessors, (28793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:22:45,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26913 states to 26913 states and 28793 transitions. [2025-03-16 15:22:45,074 INFO L78 Accepts]: Start accepts. Automaton has 26913 states and 28793 transitions. Word has length 1036 [2025-03-16 15:22:45,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:22:45,074 INFO L471 AbstractCegarLoop]: Abstraction has 26913 states and 28793 transitions. [2025-03-16 15:22:45,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 240.66666666666666) internal successors, (722), 3 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:22:45,074 INFO L276 IsEmpty]: Start isEmpty. Operand 26913 states and 28793 transitions. [2025-03-16 15:22:45,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1090 [2025-03-16 15:22:45,081 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:22:45,082 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:22:45,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-16 15:22:45,082 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:22:45,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:22:45,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1724843359, now seen corresponding path program 1 times [2025-03-16 15:22:45,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:22:45,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698094808] [2025-03-16 15:22:45,083 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:22:45,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:22:45,131 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1089 statements into 1 equivalence classes. [2025-03-16 15:22:45,162 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1089 of 1089 statements. [2025-03-16 15:22:45,162 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:22:45,162 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:22:45,585 INFO L134 CoverageAnalysis]: Checked inductivity of 1152 backedges. 429 proven. 0 refuted. 0 times theorem prover too weak. 723 trivial. 0 not checked. [2025-03-16 15:22:45,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:22:45,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698094808] [2025-03-16 15:22:45,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698094808] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:22:45,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 15:22:45,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 15:22:45,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906562229] [2025-03-16 15:22:45,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:22:45,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 15:22:45,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:22:45,588 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 15:22:45,588 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:22:45,588 INFO L87 Difference]: Start difference. First operand 26913 states and 28793 transitions. Second operand has 3 states, 3 states have (on average 207.66666666666666) internal successors, (623), 3 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:22:46,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:22:46,994 INFO L93 Difference]: Finished difference Result 60725 states and 65776 transitions. [2025-03-16 15:22:46,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 15:22:46,994 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 207.66666666666666) internal successors, (623), 3 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1089 [2025-03-16 15:22:46,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:22:47,026 INFO L225 Difference]: With dead ends: 60725 [2025-03-16 15:22:47,026 INFO L226 Difference]: Without dead ends: 33813 [2025-03-16 15:22:47,042 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:22:47,043 INFO L435 NwaCegarLoop]: 924 mSDtfsCounter, 645 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1975 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 645 SdHoareTripleChecker+Valid, 930 SdHoareTripleChecker+Invalid, 2190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 1975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-03-16 15:22:47,043 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [645 Valid, 930 Invalid, 2190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [215 Valid, 1975 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-03-16 15:22:47,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33813 states. [2025-03-16 15:22:47,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33813 to 33813. [2025-03-16 15:22:47,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33813 states, 33812 states have (on average 1.07609724358216) internal successors, (36385), 33812 states have internal predecessors, (36385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:22:47,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33813 states to 33813 states and 36385 transitions. [2025-03-16 15:22:47,287 INFO L78 Accepts]: Start accepts. Automaton has 33813 states and 36385 transitions. Word has length 1089 [2025-03-16 15:22:47,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:22:47,287 INFO L471 AbstractCegarLoop]: Abstraction has 33813 states and 36385 transitions. [2025-03-16 15:22:47,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 207.66666666666666) internal successors, (623), 3 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:22:47,288 INFO L276 IsEmpty]: Start isEmpty. Operand 33813 states and 36385 transitions. [2025-03-16 15:22:47,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1096 [2025-03-16 15:22:47,346 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:22:47,346 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:22:47,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-16 15:22:47,347 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:22:47,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:22:47,347 INFO L85 PathProgramCache]: Analyzing trace with hash -944086642, now seen corresponding path program 1 times [2025-03-16 15:22:47,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:22:47,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154402556] [2025-03-16 15:22:47,348 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:22:47,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:22:47,394 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1095 statements into 1 equivalence classes. [2025-03-16 15:22:47,422 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1095 of 1095 statements. [2025-03-16 15:22:47,422 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:22:47,422 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:22:47,881 INFO L134 CoverageAnalysis]: Checked inductivity of 1167 backedges. 444 proven. 0 refuted. 0 times theorem prover too weak. 723 trivial. 0 not checked. [2025-03-16 15:22:47,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:22:47,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154402556] [2025-03-16 15:22:47,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154402556] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:22:47,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 15:22:47,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 15:22:47,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797494686] [2025-03-16 15:22:47,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:22:47,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 15:22:47,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:22:47,885 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 15:22:47,885 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:22:47,886 INFO L87 Difference]: Start difference. First operand 33813 states and 36385 transitions. Second operand has 3 states, 3 states have (on average 209.66666666666666) internal successors, (629), 3 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:22:49,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:22:49,428 INFO L93 Difference]: Finished difference Result 77285 states and 83995 transitions. [2025-03-16 15:22:49,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 15:22:49,429 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 209.66666666666666) internal successors, (629), 3 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1095 [2025-03-16 15:22:49,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:22:49,468 INFO L225 Difference]: With dead ends: 77285 [2025-03-16 15:22:49,468 INFO L226 Difference]: Without dead ends: 40713 [2025-03-16 15:22:49,491 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:22:49,491 INFO L435 NwaCegarLoop]: 1113 mSDtfsCounter, 603 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1886 mSolverCounterSat, 362 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 603 SdHoareTripleChecker+Valid, 1119 SdHoareTripleChecker+Invalid, 2248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 362 IncrementalHoareTripleChecker+Valid, 1886 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-03-16 15:22:49,491 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [603 Valid, 1119 Invalid, 2248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [362 Valid, 1886 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-03-16 15:22:49,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40713 states. [2025-03-16 15:22:49,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40713 to 40713. [2025-03-16 15:22:49,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40713 states, 40712 states have (on average 1.0702495578699156) internal successors, (43572), 40712 states have internal predecessors, (43572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:22:49,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40713 states to 40713 states and 43572 transitions. [2025-03-16 15:22:49,812 INFO L78 Accepts]: Start accepts. Automaton has 40713 states and 43572 transitions. Word has length 1095 [2025-03-16 15:22:49,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:22:49,813 INFO L471 AbstractCegarLoop]: Abstraction has 40713 states and 43572 transitions. [2025-03-16 15:22:49,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 209.66666666666666) internal successors, (629), 3 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:22:49,813 INFO L276 IsEmpty]: Start isEmpty. Operand 40713 states and 43572 transitions. [2025-03-16 15:22:49,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1114 [2025-03-16 15:22:49,821 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:22:49,821 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:22:49,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-16 15:22:49,821 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:22:49,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:22:49,822 INFO L85 PathProgramCache]: Analyzing trace with hash -330705901, now seen corresponding path program 1 times [2025-03-16 15:22:49,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:22:49,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225064474] [2025-03-16 15:22:49,822 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:22:49,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:22:49,870 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1113 statements into 1 equivalence classes. [2025-03-16 15:22:49,896 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1113 of 1113 statements. [2025-03-16 15:22:49,896 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:22:49,896 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:22:50,263 INFO L134 CoverageAnalysis]: Checked inductivity of 1164 backedges. 605 proven. 0 refuted. 0 times theorem prover too weak. 559 trivial. 0 not checked. [2025-03-16 15:22:50,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:22:50,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225064474] [2025-03-16 15:22:50,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225064474] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:22:50,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 15:22:50,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 15:22:50,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285958749] [2025-03-16 15:22:50,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:22:50,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 15:22:50,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:22:50,264 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 15:22:50,264 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:22:50,265 INFO L87 Difference]: Start difference. First operand 40713 states and 43572 transitions. Second operand has 3 states, 3 states have (on average 224.66666666666666) internal successors, (674), 3 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:22:51,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:22:51,861 INFO L93 Difference]: Finished difference Result 91085 states and 98345 transitions. [2025-03-16 15:22:51,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 15:22:51,861 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 224.66666666666666) internal successors, (674), 3 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1113 [2025-03-16 15:22:51,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:22:51,906 INFO L225 Difference]: With dead ends: 91085 [2025-03-16 15:22:51,906 INFO L226 Difference]: Without dead ends: 47613 [2025-03-16 15:22:51,924 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:22:51,924 INFO L435 NwaCegarLoop]: 1051 mSDtfsCounter, 652 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1676 mSolverCounterSat, 512 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 652 SdHoareTripleChecker+Valid, 1056 SdHoareTripleChecker+Invalid, 2188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 512 IncrementalHoareTripleChecker+Valid, 1676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-03-16 15:22:51,924 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [652 Valid, 1056 Invalid, 2188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [512 Valid, 1676 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-03-16 15:22:51,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47613 states. [2025-03-16 15:22:52,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47613 to 46233. [2025-03-16 15:22:52,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46233 states, 46232 states have (on average 1.0417459768125974) internal successors, (48162), 46232 states have internal predecessors, (48162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:22:52,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46233 states to 46233 states and 48162 transitions. [2025-03-16 15:22:52,252 INFO L78 Accepts]: Start accepts. Automaton has 46233 states and 48162 transitions. Word has length 1113 [2025-03-16 15:22:52,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:22:52,252 INFO L471 AbstractCegarLoop]: Abstraction has 46233 states and 48162 transitions. [2025-03-16 15:22:52,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 224.66666666666666) internal successors, (674), 3 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:22:52,252 INFO L276 IsEmpty]: Start isEmpty. Operand 46233 states and 48162 transitions. [2025-03-16 15:22:52,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1269 [2025-03-16 15:22:52,325 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:22:52,325 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:22:52,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-16 15:22:52,326 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:22:52,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:22:52,326 INFO L85 PathProgramCache]: Analyzing trace with hash -492575531, now seen corresponding path program 1 times [2025-03-16 15:22:52,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:22:52,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400966430] [2025-03-16 15:22:52,327 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:22:52,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:22:52,381 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1268 statements into 1 equivalence classes. [2025-03-16 15:22:52,424 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1268 of 1268 statements. [2025-03-16 15:22:52,424 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:22:52,424 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:22:52,779 INFO L134 CoverageAnalysis]: Checked inductivity of 1808 backedges. 703 proven. 0 refuted. 0 times theorem prover too weak. 1105 trivial. 0 not checked. [2025-03-16 15:22:52,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:22:52,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400966430] [2025-03-16 15:22:52,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400966430] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:22:52,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 15:22:52,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 15:22:52,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171455778] [2025-03-16 15:22:52,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:22:52,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 15:22:52,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:22:52,780 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 15:22:52,780 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:22:52,780 INFO L87 Difference]: Start difference. First operand 46233 states and 48162 transitions. Second operand has 3 states, 3 states have (on average 232.33333333333334) internal successors, (697), 3 states have internal predecessors, (697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:22:54,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:22:54,315 INFO L93 Difference]: Finished difference Result 110405 states and 115546 transitions. [2025-03-16 15:22:54,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 15:22:54,316 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 232.33333333333334) internal successors, (697), 3 states have internal predecessors, (697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1268 [2025-03-16 15:22:54,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:22:54,402 INFO L225 Difference]: With dead ends: 110405 [2025-03-16 15:22:54,402 INFO L226 Difference]: Without dead ends: 64863 [2025-03-16 15:22:54,422 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:22:54,423 INFO L435 NwaCegarLoop]: 107 mSDtfsCounter, 574 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1685 mSolverCounterSat, 366 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 574 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 2051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 366 IncrementalHoareTripleChecker+Valid, 1685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-03-16 15:22:54,424 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [574 Valid, 112 Invalid, 2051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [366 Valid, 1685 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-03-16 15:22:54,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64863 states. [2025-03-16 15:22:54,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64863 to 64863. [2025-03-16 15:22:54,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64863 states, 64862 states have (on average 1.0454965927661806) internal successors, (67813), 64862 states have internal predecessors, (67813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:22:55,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64863 states to 64863 states and 67813 transitions. [2025-03-16 15:22:55,066 INFO L78 Accepts]: Start accepts. Automaton has 64863 states and 67813 transitions. Word has length 1268 [2025-03-16 15:22:55,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:22:55,067 INFO L471 AbstractCegarLoop]: Abstraction has 64863 states and 67813 transitions. [2025-03-16 15:22:55,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 232.33333333333334) internal successors, (697), 3 states have internal predecessors, (697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:22:55,067 INFO L276 IsEmpty]: Start isEmpty. Operand 64863 states and 67813 transitions. [2025-03-16 15:22:55,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1356 [2025-03-16 15:22:55,086 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:22:55,086 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:22:55,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-16 15:22:55,086 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:22:55,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:22:55,087 INFO L85 PathProgramCache]: Analyzing trace with hash 769397002, now seen corresponding path program 1 times [2025-03-16 15:22:55,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:22:55,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660613925] [2025-03-16 15:22:55,087 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:22:55,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:22:55,139 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1355 statements into 1 equivalence classes. [2025-03-16 15:22:55,174 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1355 of 1355 statements. [2025-03-16 15:22:55,175 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:22:55,175 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:22:55,942 INFO L134 CoverageAnalysis]: Checked inductivity of 2255 backedges. 619 proven. 0 refuted. 0 times theorem prover too weak. 1636 trivial. 0 not checked. [2025-03-16 15:22:55,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:22:55,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660613925] [2025-03-16 15:22:55,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660613925] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:22:55,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 15:22:55,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 15:22:55,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882101855] [2025-03-16 15:22:55,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:22:55,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 15:22:55,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:22:55,944 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 15:22:55,944 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:22:55,944 INFO L87 Difference]: Start difference. First operand 64863 states and 67813 transitions. Second operand has 3 states, 3 states have (on average 208.33333333333334) internal successors, (625), 3 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:22:57,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:22:57,323 INFO L93 Difference]: Finished difference Result 140075 states and 146693 transitions. [2025-03-16 15:22:57,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 15:22:57,323 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 208.33333333333334) internal successors, (625), 3 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1355 [2025-03-16 15:22:57,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:22:57,395 INFO L225 Difference]: With dead ends: 140075 [2025-03-16 15:22:57,395 INFO L226 Difference]: Without dead ends: 75213 [2025-03-16 15:22:57,427 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:22:57,428 INFO L435 NwaCegarLoop]: 261 mSDtfsCounter, 612 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1741 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 612 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 1922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 1741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-03-16 15:22:57,428 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [612 Valid, 267 Invalid, 1922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 1741 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-03-16 15:22:57,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75213 states. [2025-03-16 15:22:57,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75213 to 65553. [2025-03-16 15:22:58,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65553 states, 65552 states have (on average 1.0449871857456676) internal successors, (68501), 65552 states have internal predecessors, (68501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:22:58,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65553 states to 65553 states and 68501 transitions. [2025-03-16 15:22:58,074 INFO L78 Accepts]: Start accepts. Automaton has 65553 states and 68501 transitions. Word has length 1355 [2025-03-16 15:22:58,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:22:58,074 INFO L471 AbstractCegarLoop]: Abstraction has 65553 states and 68501 transitions. [2025-03-16 15:22:58,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 208.33333333333334) internal successors, (625), 3 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:22:58,074 INFO L276 IsEmpty]: Start isEmpty. Operand 65553 states and 68501 transitions. [2025-03-16 15:22:58,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1403 [2025-03-16 15:22:58,096 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:22:58,097 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:22:58,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-16 15:22:58,097 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:22:58,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:22:58,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1345993778, now seen corresponding path program 1 times [2025-03-16 15:22:58,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:22:58,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175931401] [2025-03-16 15:22:58,098 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:22:58,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:22:58,157 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1402 statements into 1 equivalence classes. [2025-03-16 15:22:58,195 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1402 of 1402 statements. [2025-03-16 15:22:58,196 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:22:58,196 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:22:59,935 INFO L134 CoverageAnalysis]: Checked inductivity of 2037 backedges. 534 proven. 0 refuted. 0 times theorem prover too weak. 1503 trivial. 0 not checked. [2025-03-16 15:22:59,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:22:59,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175931401] [2025-03-16 15:22:59,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175931401] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:22:59,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 15:22:59,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 15:22:59,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948683064] [2025-03-16 15:22:59,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:22:59,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 15:22:59,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:22:59,937 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 15:22:59,937 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:22:59,937 INFO L87 Difference]: Start difference. First operand 65553 states and 68501 transitions. Second operand has 3 states, 3 states have (on average 208.33333333333334) internal successors, (625), 3 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:23:01,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:23:01,216 INFO L93 Difference]: Finished difference Result 131795 states and 137714 transitions. [2025-03-16 15:23:01,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 15:23:01,217 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 208.33333333333334) internal successors, (625), 3 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1402 [2025-03-16 15:23:01,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:23:01,283 INFO L225 Difference]: With dead ends: 131795 [2025-03-16 15:23:01,283 INFO L226 Difference]: Without dead ends: 66933 [2025-03-16 15:23:01,320 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:23:01,321 INFO L435 NwaCegarLoop]: 753 mSDtfsCounter, 644 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1665 mSolverCounterSat, 243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 644 SdHoareTripleChecker+Valid, 758 SdHoareTripleChecker+Invalid, 1908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 1665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-03-16 15:23:01,321 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [644 Valid, 758 Invalid, 1908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [243 Valid, 1665 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-03-16 15:23:01,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66933 states. [2025-03-16 15:23:01,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66933 to 64173. [2025-03-16 15:23:01,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64173 states, 64172 states have (on average 1.042308171788319) internal successors, (66887), 64172 states have internal predecessors, (66887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:23:01,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64173 states to 64173 states and 66887 transitions. [2025-03-16 15:23:01,886 INFO L78 Accepts]: Start accepts. Automaton has 64173 states and 66887 transitions. Word has length 1402 [2025-03-16 15:23:01,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:23:01,887 INFO L471 AbstractCegarLoop]: Abstraction has 64173 states and 66887 transitions. [2025-03-16 15:23:01,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 208.33333333333334) internal successors, (625), 3 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:23:01,887 INFO L276 IsEmpty]: Start isEmpty. Operand 64173 states and 66887 transitions. [2025-03-16 15:23:01,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1415 [2025-03-16 15:23:01,921 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:23:01,922 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:23:01,922 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-16 15:23:01,922 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:23:01,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:23:01,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1616587206, now seen corresponding path program 1 times [2025-03-16 15:23:01,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:23:01,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638972076] [2025-03-16 15:23:01,923 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:23:01,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:23:02,011 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1414 statements into 1 equivalence classes. [2025-03-16 15:23:02,158 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1414 of 1414 statements. [2025-03-16 15:23:02,158 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:23:02,158 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:23:02,866 INFO L134 CoverageAnalysis]: Checked inductivity of 2160 backedges. 1497 proven. 0 refuted. 0 times theorem prover too weak. 663 trivial. 0 not checked. [2025-03-16 15:23:02,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:23:02,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638972076] [2025-03-16 15:23:02,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638972076] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:23:02,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 15:23:02,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 15:23:02,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476504991] [2025-03-16 15:23:02,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:23:02,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 15:23:02,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:23:02,868 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 15:23:02,868 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:23:02,868 INFO L87 Difference]: Start difference. First operand 64173 states and 66887 transitions. Second operand has 3 states, 3 states have (on average 292.3333333333333) internal successors, (877), 3 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:23:04,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:23:04,329 INFO L93 Difference]: Finished difference Result 138005 states and 144012 transitions. [2025-03-16 15:23:04,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 15:23:04,329 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 292.3333333333333) internal successors, (877), 3 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1414 [2025-03-16 15:23:04,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:23:04,392 INFO L225 Difference]: With dead ends: 138005 [2025-03-16 15:23:04,393 INFO L226 Difference]: Without dead ends: 74523 [2025-03-16 15:23:04,418 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:23:04,418 INFO L435 NwaCegarLoop]: 267 mSDtfsCounter, 586 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1792 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 586 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 1889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-03-16 15:23:04,419 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [586 Valid, 273 Invalid, 1889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1792 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-03-16 15:23:04,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74523 states. [2025-03-16 15:23:04,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74523 to 73143. [2025-03-16 15:23:04,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73143 states, 73142 states have (on average 1.0406196166361326) internal successors, (76113), 73142 states have internal predecessors, (76113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:23:05,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73143 states to 73143 states and 76113 transitions. [2025-03-16 15:23:05,001 INFO L78 Accepts]: Start accepts. Automaton has 73143 states and 76113 transitions. Word has length 1414 [2025-03-16 15:23:05,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:23:05,001 INFO L471 AbstractCegarLoop]: Abstraction has 73143 states and 76113 transitions. [2025-03-16 15:23:05,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 292.3333333333333) internal successors, (877), 3 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:23:05,002 INFO L276 IsEmpty]: Start isEmpty. Operand 73143 states and 76113 transitions. [2025-03-16 15:23:05,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1468 [2025-03-16 15:23:05,024 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:23:05,025 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:23:05,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-03-16 15:23:05,025 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:23:05,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:23:05,026 INFO L85 PathProgramCache]: Analyzing trace with hash 698464254, now seen corresponding path program 1 times [2025-03-16 15:23:05,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:23:05,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127903777] [2025-03-16 15:23:05,026 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:23:05,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:23:05,084 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1467 statements into 1 equivalence classes. [2025-03-16 15:23:05,119 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1467 of 1467 statements. [2025-03-16 15:23:05,119 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:23:05,119 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:23:06,902 INFO L134 CoverageAnalysis]: Checked inductivity of 2588 backedges. 1114 proven. 1199 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2025-03-16 15:23:06,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:23:06,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127903777] [2025-03-16 15:23:06,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127903777] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 15:23:06,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152753810] [2025-03-16 15:23:06,903 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:23:06,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 15:23:06,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 15:23:06,905 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 15:23:06,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-16 15:23:07,036 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1467 statements into 1 equivalence classes. [2025-03-16 15:23:07,214 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1467 of 1467 statements. [2025-03-16 15:23:07,214 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:23:07,214 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:23:07,218 INFO L256 TraceCheckSpWp]: Trace formula consists of 1707 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-16 15:23:07,236 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 15:23:07,418 INFO L134 CoverageAnalysis]: Checked inductivity of 2588 backedges. 1188 proven. 0 refuted. 0 times theorem prover too weak. 1400 trivial. 0 not checked. [2025-03-16 15:23:07,419 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 15:23:07,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1152753810] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:23:07,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 15:23:07,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2025-03-16 15:23:07,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612871858] [2025-03-16 15:23:07,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:23:07,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 15:23:07,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:23:07,422 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 15:23:07,422 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2025-03-16 15:23:07,422 INFO L87 Difference]: Start difference. First operand 73143 states and 76113 transitions. Second operand has 3 states, 3 states have (on average 246.66666666666666) internal successors, (740), 3 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:23:08,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:23:08,967 INFO L93 Difference]: Finished difference Result 145595 states and 151534 transitions. [2025-03-16 15:23:08,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 15:23:08,967 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 246.66666666666666) internal successors, (740), 3 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1467 [2025-03-16 15:23:08,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:23:09,044 INFO L225 Difference]: With dead ends: 145595 [2025-03-16 15:23:09,044 INFO L226 Difference]: Without dead ends: 73143 [2025-03-16 15:23:09,087 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1474 GetRequests, 1467 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2025-03-16 15:23:09,088 INFO L435 NwaCegarLoop]: 880 mSDtfsCounter, 623 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1609 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 623 SdHoareTripleChecker+Valid, 886 SdHoareTripleChecker+Invalid, 1808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 1609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-03-16 15:23:09,088 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [623 Valid, 886 Invalid, 1808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 1609 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-03-16 15:23:09,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73143 states. [2025-03-16 15:23:09,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73143 to 71073. [2025-03-16 15:23:09,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71073 states, 71072 states have (on average 1.0280701260693381) internal successors, (73067), 71072 states have internal predecessors, (73067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:23:09,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71073 states to 71073 states and 73067 transitions. [2025-03-16 15:23:09,967 INFO L78 Accepts]: Start accepts. Automaton has 71073 states and 73067 transitions. Word has length 1467 [2025-03-16 15:23:09,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:23:09,968 INFO L471 AbstractCegarLoop]: Abstraction has 71073 states and 73067 transitions. [2025-03-16 15:23:09,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 246.66666666666666) internal successors, (740), 3 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:23:09,969 INFO L276 IsEmpty]: Start isEmpty. Operand 71073 states and 73067 transitions. [2025-03-16 15:23:09,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1473 [2025-03-16 15:23:09,996 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:23:09,996 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:23:10,004 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-16 15:23:10,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2025-03-16 15:23:10,197 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:23:10,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:23:10,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1321163080, now seen corresponding path program 1 times [2025-03-16 15:23:10,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:23:10,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644228523] [2025-03-16 15:23:10,198 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:23:10,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:23:10,255 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1472 statements into 1 equivalence classes. [2025-03-16 15:23:10,291 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1472 of 1472 statements. [2025-03-16 15:23:10,292 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:23:10,292 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:23:10,807 INFO L134 CoverageAnalysis]: Checked inductivity of 2947 backedges. 151 proven. 0 refuted. 0 times theorem prover too weak. 2796 trivial. 0 not checked. [2025-03-16 15:23:10,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:23:10,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644228523] [2025-03-16 15:23:10,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644228523] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:23:10,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 15:23:10,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 15:23:10,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428371224] [2025-03-16 15:23:10,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:23:10,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 15:23:10,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:23:10,808 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 15:23:10,808 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:23:10,809 INFO L87 Difference]: Start difference. First operand 71073 states and 73067 transitions. Second operand has 3 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:23:12,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:23:12,245 INFO L93 Difference]: Finished difference Result 153875 states and 158344 transitions. [2025-03-16 15:23:12,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 15:23:12,245 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1472 [2025-03-16 15:23:12,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:23:12,328 INFO L225 Difference]: With dead ends: 153875 [2025-03-16 15:23:12,328 INFO L226 Difference]: Without dead ends: 82113 [2025-03-16 15:23:12,368 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:23:12,369 INFO L435 NwaCegarLoop]: 940 mSDtfsCounter, 673 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1769 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 673 SdHoareTripleChecker+Valid, 946 SdHoareTripleChecker+Invalid, 1990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 1769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-03-16 15:23:12,369 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [673 Valid, 946 Invalid, 1990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [221 Valid, 1769 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-03-16 15:23:12,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82113 states. [2025-03-16 15:23:12,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82113 to 79353. [2025-03-16 15:23:12,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79353 states, 79352 states have (on average 1.026338340558524) internal successors, (81442), 79352 states have internal predecessors, (81442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:23:12,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79353 states to 79353 states and 81442 transitions. [2025-03-16 15:23:12,998 INFO L78 Accepts]: Start accepts. Automaton has 79353 states and 81442 transitions. Word has length 1472 [2025-03-16 15:23:12,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:23:12,999 INFO L471 AbstractCegarLoop]: Abstraction has 79353 states and 81442 transitions. [2025-03-16 15:23:12,999 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:23:12,999 INFO L276 IsEmpty]: Start isEmpty. Operand 79353 states and 81442 transitions. [2025-03-16 15:23:13,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1554 [2025-03-16 15:23:13,029 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:23:13,030 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:23:13,030 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-03-16 15:23:13,030 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:23:13,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:23:13,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1748394675, now seen corresponding path program 1 times [2025-03-16 15:23:13,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:23:13,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875863586] [2025-03-16 15:23:13,031 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:23:13,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:23:13,093 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1553 statements into 1 equivalence classes. [2025-03-16 15:23:13,131 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1553 of 1553 statements. [2025-03-16 15:23:13,131 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:23:13,131 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:23:14,515 INFO L134 CoverageAnalysis]: Checked inductivity of 2395 backedges. 619 proven. 1011 refuted. 0 times theorem prover too weak. 765 trivial. 0 not checked. [2025-03-16 15:23:14,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:23:14,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875863586] [2025-03-16 15:23:14,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875863586] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 15:23:14,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933831343] [2025-03-16 15:23:14,515 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:23:14,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 15:23:14,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 15:23:14,517 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 15:23:14,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-16 15:23:14,613 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1553 statements into 1 equivalence classes. [2025-03-16 15:23:14,768 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1553 of 1553 statements. [2025-03-16 15:23:14,768 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:23:14,768 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:23:14,773 INFO L256 TraceCheckSpWp]: Trace formula consists of 1774 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-16 15:23:14,781 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 15:23:14,929 INFO L134 CoverageAnalysis]: Checked inductivity of 2395 backedges. 775 proven. 0 refuted. 0 times theorem prover too weak. 1620 trivial. 0 not checked. [2025-03-16 15:23:14,929 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 15:23:14,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933831343] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:23:14,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 15:23:14,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2025-03-16 15:23:14,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096689949] [2025-03-16 15:23:14,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:23:14,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 15:23:14,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:23:14,931 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 15:23:14,931 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-03-16 15:23:14,931 INFO L87 Difference]: Start difference. First operand 79353 states and 81442 transitions. Second operand has 3 states, 3 states have (on average 232.66666666666666) internal successors, (698), 3 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:23:16,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:23:16,302 INFO L93 Difference]: Finished difference Result 158015 states and 162192 transitions. [2025-03-16 15:23:16,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 15:23:16,302 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 232.66666666666666) internal successors, (698), 3 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1553 [2025-03-16 15:23:16,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:23:16,550 INFO L225 Difference]: With dead ends: 158015 [2025-03-16 15:23:16,550 INFO L226 Difference]: Without dead ends: 79353 [2025-03-16 15:23:16,568 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1558 GetRequests, 1553 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-03-16 15:23:16,569 INFO L435 NwaCegarLoop]: 133 mSDtfsCounter, 562 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1671 mSolverCounterSat, 236 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 562 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 1907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 236 IncrementalHoareTripleChecker+Valid, 1671 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-03-16 15:23:16,569 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [562 Valid, 139 Invalid, 1907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [236 Valid, 1671 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-03-16 15:23:16,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79353 states. [2025-03-16 15:23:17,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79353 to 79353. [2025-03-16 15:23:17,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79353 states, 79352 states have (on average 1.0185124508519003) internal successors, (80821), 79352 states have internal predecessors, (80821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:23:17,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79353 states to 79353 states and 80821 transitions. [2025-03-16 15:23:17,170 INFO L78 Accepts]: Start accepts. Automaton has 79353 states and 80821 transitions. Word has length 1553 [2025-03-16 15:23:17,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:23:17,171 INFO L471 AbstractCegarLoop]: Abstraction has 79353 states and 80821 transitions. [2025-03-16 15:23:17,171 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 232.66666666666666) internal successors, (698), 3 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:23:17,171 INFO L276 IsEmpty]: Start isEmpty. Operand 79353 states and 80821 transitions. [2025-03-16 15:23:17,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1724 [2025-03-16 15:23:17,207 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:23:17,208 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:23:17,215 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-16 15:23:17,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 15:23:17,408 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:23:17,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:23:17,409 INFO L85 PathProgramCache]: Analyzing trace with hash -747297116, now seen corresponding path program 1 times [2025-03-16 15:23:17,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:23:17,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612568571] [2025-03-16 15:23:17,409 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:23:17,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:23:17,478 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1723 statements into 1 equivalence classes. [2025-03-16 15:23:17,532 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1723 of 1723 statements. [2025-03-16 15:23:17,532 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:23:17,532 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:23:18,327 INFO L134 CoverageAnalysis]: Checked inductivity of 2461 backedges. 1780 proven. 0 refuted. 0 times theorem prover too weak. 681 trivial. 0 not checked. [2025-03-16 15:23:18,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:23:18,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612568571] [2025-03-16 15:23:18,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612568571] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:23:18,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 15:23:18,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 15:23:18,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772326860] [2025-03-16 15:23:18,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:23:18,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 15:23:18,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:23:18,329 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 15:23:18,329 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:23:18,329 INFO L87 Difference]: Start difference. First operand 79353 states and 80821 transitions. Second operand has 3 states, 3 states have (on average 389.6666666666667) internal successors, (1169), 3 states have internal predecessors, (1169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:23:19,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:23:19,863 INFO L93 Difference]: Finished difference Result 177335 states and 180653 transitions. [2025-03-16 15:23:19,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 15:23:19,863 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 389.6666666666667) internal successors, (1169), 3 states have internal predecessors, (1169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1723 [2025-03-16 15:23:19,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:23:19,964 INFO L225 Difference]: With dead ends: 177335 [2025-03-16 15:23:19,964 INFO L226 Difference]: Without dead ends: 98673 [2025-03-16 15:23:20,013 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 15:23:20,013 INFO L435 NwaCegarLoop]: 216 mSDtfsCounter, 614 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1747 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 614 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 1958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 1747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-03-16 15:23:20,013 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [614 Valid, 221 Invalid, 1958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 1747 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-03-16 15:23:20,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98673 states. [2025-03-16 15:23:20,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98673 to 97293. [2025-03-16 15:23:20,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97293 states, 97292 states have (on average 1.0175040085515767) internal successors, (98995), 97292 states have internal predecessors, (98995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:23:21,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97293 states to 97293 states and 98995 transitions. [2025-03-16 15:23:21,056 INFO L78 Accepts]: Start accepts. Automaton has 97293 states and 98995 transitions. Word has length 1723 [2025-03-16 15:23:21,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:23:21,057 INFO L471 AbstractCegarLoop]: Abstraction has 97293 states and 98995 transitions. [2025-03-16 15:23:21,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 389.6666666666667) internal successors, (1169), 3 states have internal predecessors, (1169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:23:21,057 INFO L276 IsEmpty]: Start isEmpty. Operand 97293 states and 98995 transitions. [2025-03-16 15:23:21,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1956 [2025-03-16 15:23:21,112 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:23:21,113 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:23:21,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2025-03-16 15:23:21,113 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:23:21,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:23:21,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1346786703, now seen corresponding path program 1 times [2025-03-16 15:23:21,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:23:21,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841606293] [2025-03-16 15:23:21,114 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:23:21,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:23:21,185 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1955 statements into 1 equivalence classes. [2025-03-16 15:23:21,215 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1955 of 1955 statements. [2025-03-16 15:23:21,215 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:23:21,215 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 15:23:23,020 INFO L134 CoverageAnalysis]: Checked inductivity of 3498 backedges. 2408 proven. 0 refuted. 0 times theorem prover too weak. 1090 trivial. 0 not checked. [2025-03-16 15:23:23,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 15:23:23,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841606293] [2025-03-16 15:23:23,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841606293] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 15:23:23,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 15:23:23,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 15:23:23,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783219813] [2025-03-16 15:23:23,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 15:23:23,021 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 15:23:23,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 15:23:23,022 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 15:23:23,022 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-16 15:23:23,022 INFO L87 Difference]: Start difference. First operand 97293 states and 98995 transitions. Second operand has 4 states, 4 states have (on average 266.0) internal successors, (1064), 3 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:23:25,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 15:23:25,131 INFO L93 Difference]: Finished difference Result 197345 states and 200774 transitions. [2025-03-16 15:23:25,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 15:23:25,131 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 266.0) internal successors, (1064), 3 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1955 [2025-03-16 15:23:25,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 15:23:25,261 INFO L225 Difference]: With dead ends: 197345 [2025-03-16 15:23:25,261 INFO L226 Difference]: Without dead ends: 100053 [2025-03-16 15:23:25,319 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-16 15:23:25,320 INFO L435 NwaCegarLoop]: 54 mSDtfsCounter, 801 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 2662 mSolverCounterSat, 238 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 801 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 2900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 238 IncrementalHoareTripleChecker+Valid, 2662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-03-16 15:23:25,320 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [801 Valid, 65 Invalid, 2900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [238 Valid, 2662 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-03-16 15:23:25,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100053 states. [2025-03-16 15:23:26,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100053 to 97983. [2025-03-16 15:23:26,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97983 states, 97982 states have (on average 1.0171562123655364) internal successors, (99663), 97982 states have internal predecessors, (99663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:23:26,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97983 states to 97983 states and 99663 transitions. [2025-03-16 15:23:26,523 INFO L78 Accepts]: Start accepts. Automaton has 97983 states and 99663 transitions. Word has length 1955 [2025-03-16 15:23:26,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 15:23:26,523 INFO L471 AbstractCegarLoop]: Abstraction has 97983 states and 99663 transitions. [2025-03-16 15:23:26,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 266.0) internal successors, (1064), 3 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 15:23:26,523 INFO L276 IsEmpty]: Start isEmpty. Operand 97983 states and 99663 transitions. [2025-03-16 15:23:26,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2025 [2025-03-16 15:23:26,585 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 15:23:26,585 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 15:23:26,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2025-03-16 15:23:26,586 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 15:23:26,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 15:23:26,587 INFO L85 PathProgramCache]: Analyzing trace with hash -94997219, now seen corresponding path program 1 times [2025-03-16 15:23:26,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 15:23:26,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260675614] [2025-03-16 15:23:26,588 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 15:23:26,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 15:23:26,670 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2024 statements into 1 equivalence classes. [2025-03-16 15:23:26,827 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2024 of 2024 statements. [2025-03-16 15:23:26,827 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 15:23:26,827 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat