./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-52.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed 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/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-52.i -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 860048a24abd15d6568a41ffd17ac25bbefe747caeaf9a3976a4e57ac9819130 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 11:30:01,029 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 11:30:01,079 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 11:30:01,085 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 11:30:01,088 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 11:30:01,110 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 11:30:01,111 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 11:30:01,112 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 11:30:01,112 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 11:30:01,112 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 11:30:01,113 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 11:30:01,113 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 11:30:01,113 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 11:30:01,113 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 11:30:01,114 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 11:30:01,114 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 11:30:01,114 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 11:30:01,114 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 11:30:01,114 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 11:30:01,114 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 11:30:01,114 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 11:30:01,115 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 11:30:01,115 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 11:30:01,115 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 11:30:01,115 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 11:30:01,115 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 11:30:01,115 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 11:30:01,115 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 11:30:01,115 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 11:30:01,115 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 11:30:01,115 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 11:30:01,116 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 11:30:01,116 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 11:30:01,116 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 11:30:01,116 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 11:30:01,116 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 11:30:01,116 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 11:30:01,116 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 11:30:01,116 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 11:30:01,116 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 11:30:01,116 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 11:30:01,116 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 11:30:01,116 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 11:30:01,117 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 -> 860048a24abd15d6568a41ffd17ac25bbefe747caeaf9a3976a4e57ac9819130 [2025-03-08 11:30:01,359 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 11:30:01,368 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 11:30:01,370 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 11:30:01,372 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 11:30:01,372 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 11:30:01,374 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-52.i [2025-03-08 11:30:02,553 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84ea007b1/76ede0991576403496096b22eaf0979e/FLAG836234336 [2025-03-08 11:30:02,566 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) [2025-03-08 11:30:02,790 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 11:30:02,794 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-52.i [2025-03-08 11:30:02,804 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84ea007b1/76ede0991576403496096b22eaf0979e/FLAG836234336 [2025-03-08 11:30:02,818 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84ea007b1/76ede0991576403496096b22eaf0979e [2025-03-08 11:30:02,820 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 11:30:02,822 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 11:30:02,824 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 11:30:02,825 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 11:30:02,828 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 11:30:02,830 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 11:30:02" (1/1) ... [2025-03-08 11:30:02,831 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61afd14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 11:30:02, skipping insertion in model container [2025-03-08 11:30:02,831 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 11:30:02" (1/1) ... [2025-03-08 11:30:02,852 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 11:30:02,964 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/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-52.i[915,928] [2025-03-08 11:30:03,021 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 11:30:03,033 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 11:30:03,040 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/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-50_file-52.i[915,928] [2025-03-08 11:30:03,061 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 11:30:03,075 INFO L204 MainTranslator]: Completed translation [2025-03-08 11:30:03,076 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 11:30:03 WrapperNode [2025-03-08 11:30:03,076 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 11:30:03,077 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 11:30:03,077 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 11:30:03,077 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 11:30:03,082 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 11:30:03" (1/1) ... [2025-03-08 11:30:03,089 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 11:30:03" (1/1) ... [2025-03-08 11:30:03,113 INFO L138 Inliner]: procedures = 26, calls = 47, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 244 [2025-03-08 11:30:03,114 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 11:30:03,114 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 11:30:03,114 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 11:30:03,114 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 11:30:03,122 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 11:30:03" (1/1) ... [2025-03-08 11:30:03,123 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 11:30:03" (1/1) ... [2025-03-08 11:30:03,130 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 11:30:03" (1/1) ... [2025-03-08 11:30:03,149 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]. [2025-03-08 11:30:03,150 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 11:30:03" (1/1) ... [2025-03-08 11:30:03,150 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 11:30:03" (1/1) ... [2025-03-08 11:30:03,155 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 11:30:03" (1/1) ... [2025-03-08 11:30:03,156 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 11:30:03" (1/1) ... [2025-03-08 11:30:03,157 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 11:30:03" (1/1) ... [2025-03-08 11:30:03,158 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 11:30:03" (1/1) ... [2025-03-08 11:30:03,160 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 11:30:03,164 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 11:30:03,164 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 11:30:03,164 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 11:30:03,165 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 11:30:03" (1/1) ... [2025-03-08 11:30:03,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 11:30:03,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 11:30:03,193 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) [2025-03-08 11:30:03,195 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 [2025-03-08 11:30:03,213 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 11:30:03,213 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-08 11:30:03,213 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-08 11:30:03,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 11:30:03,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 11:30:03,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 11:30:03,289 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 11:30:03,291 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 11:30:03,680 INFO L? ?]: Removed 22 outVars from TransFormulas that were not future-live. [2025-03-08 11:30:03,680 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 11:30:03,698 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 11:30:03,699 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 11:30:03,700 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 11:30:03 BoogieIcfgContainer [2025-03-08 11:30:03,700 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 11:30:03,701 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 11:30:03,701 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 11:30:03,705 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 11:30:03,705 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 11:30:02" (1/3) ... [2025-03-08 11:30:03,706 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24dd187e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 11:30:03, skipping insertion in model container [2025-03-08 11:30:03,706 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 11:30:03" (2/3) ... [2025-03-08 11:30:03,706 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24dd187e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 11:30:03, skipping insertion in model container [2025-03-08 11:30:03,706 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 11:30:03" (3/3) ... [2025-03-08 11:30:03,707 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-50_file-52.i [2025-03-08 11:30:03,717 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 11:30:03,719 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodesize_ps-cn-50_file-52.i that has 2 procedures, 105 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-08 11:30:03,771 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 11:30:03,781 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;@7a8827c2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 11:30:03,782 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 11:30:03,786 INFO L276 IsEmpty]: Start isEmpty. Operand has 105 states, 68 states have (on average 1.411764705882353) internal successors, (96), 69 states have internal predecessors, (96), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2025-03-08 11:30:03,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2025-03-08 11:30:03,797 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 11:30:03,797 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 11:30:03,798 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 11:30:03,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 11:30:03,803 INFO L85 PathProgramCache]: Analyzing trace with hash -102125173, now seen corresponding path program 1 times [2025-03-08 11:30:03,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 11:30:03,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445384530] [2025-03-08 11:30:03,810 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 11:30:03,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 11:30:03,892 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 219 statements into 1 equivalence classes. [2025-03-08 11:30:03,923 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 219 of 219 statements. [2025-03-08 11:30:03,923 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 11:30:03,923 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 11:30:04,123 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 2178 trivial. 0 not checked. [2025-03-08 11:30:04,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 11:30:04,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445384530] [2025-03-08 11:30:04,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445384530] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 11:30:04,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333692895] [2025-03-08 11:30:04,125 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 11:30:04,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 11:30:04,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 11:30:04,127 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) [2025-03-08 11:30:04,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-08 11:30:04,214 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 219 statements into 1 equivalence classes. [2025-03-08 11:30:04,298 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 219 of 219 statements. [2025-03-08 11:30:04,298 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 11:30:04,298 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 11:30:04,301 INFO L256 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-08 11:30:04,310 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 11:30:04,336 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 2178 trivial. 0 not checked. [2025-03-08 11:30:04,336 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 11:30:04,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333692895] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 11:30:04,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 11:30:04,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-08 11:30:04,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355575823] [2025-03-08 11:30:04,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 11:30:04,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-08 11:30:04,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 11:30:04,360 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-08 11:30:04,360 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 11:30:04,363 INFO L87 Difference]: Start difference. First operand has 105 states, 68 states have (on average 1.411764705882353) internal successors, (96), 69 states have internal predecessors, (96), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 2 states have call successors, (34) [2025-03-08 11:30:04,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 11:30:04,398 INFO L93 Difference]: Finished difference Result 204 states and 357 transitions. [2025-03-08 11:30:04,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-08 11:30:04,400 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 2 states have call successors, (34) Word has length 219 [2025-03-08 11:30:04,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 11:30:04,405 INFO L225 Difference]: With dead ends: 204 [2025-03-08 11:30:04,405 INFO L226 Difference]: Without dead ends: 102 [2025-03-08 11:30:04,408 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 11:30:04,409 INFO L435 NwaCegarLoop]: 156 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 11:30:04,410 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 156 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 11:30:04,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2025-03-08 11:30:04,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2025-03-08 11:30:04,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 66 states have (on average 1.378787878787879) internal successors, (91), 66 states have internal predecessors, (91), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2025-03-08 11:30:04,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 159 transitions. [2025-03-08 11:30:04,445 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 159 transitions. Word has length 219 [2025-03-08 11:30:04,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 11:30:04,446 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 159 transitions. [2025-03-08 11:30:04,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 2 states have call successors, (34) [2025-03-08 11:30:04,447 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 159 transitions. [2025-03-08 11:30:04,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2025-03-08 11:30:04,449 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 11:30:04,449 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 11:30:04,458 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-08 11:30:04,650 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,SelfDestructingSolverStorable0 [2025-03-08 11:30:04,650 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 11:30:04,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 11:30:04,651 INFO L85 PathProgramCache]: Analyzing trace with hash 690554509, now seen corresponding path program 1 times [2025-03-08 11:30:04,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 11:30:04,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612862523] [2025-03-08 11:30:04,651 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 11:30:04,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 11:30:04,669 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 219 statements into 1 equivalence classes. [2025-03-08 11:30:04,771 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 219 of 219 statements. [2025-03-08 11:30:04,773 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 11:30:04,773 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 11:30:05,319 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2025-03-08 11:30:05,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 11:30:05,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612862523] [2025-03-08 11:30:05,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612862523] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 11:30:05,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 11:30:05,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 11:30:05,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268085547] [2025-03-08 11:30:05,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 11:30:05,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 11:30:05,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 11:30:05,324 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 11:30:05,324 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 11:30:05,325 INFO L87 Difference]: Start difference. First operand 102 states and 159 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2025-03-08 11:30:05,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 11:30:05,552 INFO L93 Difference]: Finished difference Result 272 states and 425 transitions. [2025-03-08 11:30:05,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 11:30:05,553 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 219 [2025-03-08 11:30:05,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 11:30:05,556 INFO L225 Difference]: With dead ends: 272 [2025-03-08 11:30:05,556 INFO L226 Difference]: Without dead ends: 173 [2025-03-08 11:30:05,557 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 11:30:05,558 INFO L435 NwaCegarLoop]: 204 mSDtfsCounter, 107 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 633 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 11:30:05,558 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 633 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 11:30:05,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2025-03-08 11:30:05,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 170. [2025-03-08 11:30:05,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 117 states have (on average 1.4188034188034189) internal successors, (166), 118 states have internal predecessors, (166), 50 states have call successors, (50), 2 states have call predecessors, (50), 2 states have return successors, (50), 49 states have call predecessors, (50), 50 states have call successors, (50) [2025-03-08 11:30:05,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 266 transitions. [2025-03-08 11:30:05,583 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 266 transitions. Word has length 219 [2025-03-08 11:30:05,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 11:30:05,583 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 266 transitions. [2025-03-08 11:30:05,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2025-03-08 11:30:05,583 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 266 transitions. [2025-03-08 11:30:05,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2025-03-08 11:30:05,587 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 11:30:05,588 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 11:30:05,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 11:30:05,588 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 11:30:05,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 11:30:05,589 INFO L85 PathProgramCache]: Analyzing trace with hash 623547756, now seen corresponding path program 1 times [2025-03-08 11:30:05,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 11:30:05,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170529964] [2025-03-08 11:30:05,589 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 11:30:05,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 11:30:05,609 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 219 statements into 1 equivalence classes. [2025-03-08 11:30:05,691 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 219 of 219 statements. [2025-03-08 11:30:05,691 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 11:30:05,691 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 11:30:05,855 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2025-03-08 11:30:05,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 11:30:05,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170529964] [2025-03-08 11:30:05,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170529964] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 11:30:05,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 11:30:05,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 11:30:05,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363500999] [2025-03-08 11:30:05,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 11:30:05,857 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 11:30:05,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 11:30:05,859 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 11:30:05,859 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 11:30:05,859 INFO L87 Difference]: Start difference. First operand 170 states and 266 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2025-03-08 11:30:05,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 11:30:05,919 INFO L93 Difference]: Finished difference Result 470 states and 737 transitions. [2025-03-08 11:30:05,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 11:30:05,920 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 219 [2025-03-08 11:30:05,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 11:30:05,926 INFO L225 Difference]: With dead ends: 470 [2025-03-08 11:30:05,926 INFO L226 Difference]: Without dead ends: 303 [2025-03-08 11:30:05,927 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 [2025-03-08 11:30:05,928 INFO L435 NwaCegarLoop]: 203 mSDtfsCounter, 99 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 11:30:05,930 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 349 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 11:30:05,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2025-03-08 11:30:05,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 300. [2025-03-08 11:30:05,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 211 states have (on average 1.4312796208530805) internal successors, (302), 214 states have internal predecessors, (302), 84 states have call successors, (84), 4 states have call predecessors, (84), 4 states have return successors, (84), 81 states have call predecessors, (84), 84 states have call successors, (84) [2025-03-08 11:30:05,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 470 transitions. [2025-03-08 11:30:05,977 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 470 transitions. Word has length 219 [2025-03-08 11:30:05,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 11:30:05,979 INFO L471 AbstractCegarLoop]: Abstraction has 300 states and 470 transitions. [2025-03-08 11:30:05,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2025-03-08 11:30:05,979 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 470 transitions. [2025-03-08 11:30:05,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2025-03-08 11:30:05,984 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 11:30:05,984 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 11:30:05,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 11:30:05,985 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 11:30:05,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 11:30:05,985 INFO L85 PathProgramCache]: Analyzing trace with hash -962897540, now seen corresponding path program 1 times [2025-03-08 11:30:05,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 11:30:05,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926864997] [2025-03-08 11:30:05,985 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 11:30:05,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 11:30:06,000 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 220 statements into 1 equivalence classes. [2025-03-08 11:30:06,117 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 220 of 220 statements. [2025-03-08 11:30:06,117 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 11:30:06,117 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 11:30:12,116 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2025-03-08 11:30:12,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 11:30:12,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926864997] [2025-03-08 11:30:12,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926864997] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 11:30:12,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 11:30:12,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2025-03-08 11:30:12,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279573494] [2025-03-08 11:30:12,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 11:30:12,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-03-08 11:30:12,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 11:30:12,118 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-03-08 11:30:12,119 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2025-03-08 11:30:12,119 INFO L87 Difference]: Start difference. First operand 300 states and 470 transitions. Second operand has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 18 states have internal predecessors, (53), 4 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 3 states have call predecessors, (34), 4 states have call successors, (34) [2025-03-08 11:30:15,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 11:30:15,656 INFO L93 Difference]: Finished difference Result 787 states and 1187 transitions. [2025-03-08 11:30:15,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-03-08 11:30:15,657 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 18 states have internal predecessors, (53), 4 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 3 states have call predecessors, (34), 4 states have call successors, (34) Word has length 220 [2025-03-08 11:30:15,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 11:30:15,661 INFO L225 Difference]: With dead ends: 787 [2025-03-08 11:30:15,661 INFO L226 Difference]: Without dead ends: 785 [2025-03-08 11:30:15,662 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=360, Invalid=1046, Unknown=0, NotChecked=0, Total=1406 [2025-03-08 11:30:15,663 INFO L435 NwaCegarLoop]: 131 mSDtfsCounter, 343 mSDsluCounter, 1118 mSDsCounter, 0 mSdLazyCounter, 896 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 1249 SdHoareTripleChecker+Invalid, 1056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-03-08 11:30:15,663 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [343 Valid, 1249 Invalid, 1056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 896 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-03-08 11:30:15,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2025-03-08 11:30:15,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 545. [2025-03-08 11:30:15,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 420 states have (on average 1.480952380952381) internal successors, (622), 423 states have internal predecessors, (622), 118 states have call successors, (118), 6 states have call predecessors, (118), 6 states have return successors, (118), 115 states have call predecessors, (118), 118 states have call successors, (118) [2025-03-08 11:30:15,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 858 transitions. [2025-03-08 11:30:15,710 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 858 transitions. Word has length 220 [2025-03-08 11:30:15,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 11:30:15,710 INFO L471 AbstractCegarLoop]: Abstraction has 545 states and 858 transitions. [2025-03-08 11:30:15,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 18 states have internal predecessors, (53), 4 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 3 states have call predecessors, (34), 4 states have call successors, (34) [2025-03-08 11:30:15,711 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 858 transitions. [2025-03-08 11:30:15,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2025-03-08 11:30:15,713 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 11:30:15,713 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 11:30:15,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 11:30:15,713 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 11:30:15,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 11:30:15,714 INFO L85 PathProgramCache]: Analyzing trace with hash -833814821, now seen corresponding path program 1 times [2025-03-08 11:30:15,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 11:30:15,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414815023] [2025-03-08 11:30:15,714 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 11:30:15,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 11:30:15,727 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 220 statements into 1 equivalence classes. [2025-03-08 11:30:15,744 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 220 of 220 statements. [2025-03-08 11:30:15,744 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 11:30:15,744 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 11:30:15,887 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2025-03-08 11:30:15,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 11:30:15,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414815023] [2025-03-08 11:30:15,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414815023] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 11:30:15,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 11:30:15,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 11:30:15,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820456456] [2025-03-08 11:30:15,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 11:30:15,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 11:30:15,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 11:30:15,889 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 11:30:15,889 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 11:30:15,890 INFO L87 Difference]: Start difference. First operand 545 states and 858 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2025-03-08 11:30:16,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 11:30:16,070 INFO L93 Difference]: Finished difference Result 1271 states and 1988 transitions. [2025-03-08 11:30:16,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 11:30:16,070 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 220 [2025-03-08 11:30:16,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 11:30:16,075 INFO L225 Difference]: With dead ends: 1271 [2025-03-08 11:30:16,075 INFO L226 Difference]: Without dead ends: 914 [2025-03-08 11:30:16,076 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-08 11:30:16,076 INFO L435 NwaCegarLoop]: 288 mSDtfsCounter, 172 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 11:30:16,076 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 631 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 11:30:16,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 914 states. [2025-03-08 11:30:16,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 914 to 557. [2025-03-08 11:30:16,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 432 states have (on average 1.4675925925925926) internal successors, (634), 435 states have internal predecessors, (634), 118 states have call successors, (118), 6 states have call predecessors, (118), 6 states have return successors, (118), 115 states have call predecessors, (118), 118 states have call successors, (118) [2025-03-08 11:30:16,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 870 transitions. [2025-03-08 11:30:16,118 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 870 transitions. Word has length 220 [2025-03-08 11:30:16,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 11:30:16,119 INFO L471 AbstractCegarLoop]: Abstraction has 557 states and 870 transitions. [2025-03-08 11:30:16,119 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2025-03-08 11:30:16,119 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 870 transitions. [2025-03-08 11:30:16,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2025-03-08 11:30:16,123 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 11:30:16,123 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 11:30:16,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-08 11:30:16,123 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 11:30:16,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 11:30:16,124 INFO L85 PathProgramCache]: Analyzing trace with hash -998135109, now seen corresponding path program 1 times [2025-03-08 11:30:16,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 11:30:16,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252338363] [2025-03-08 11:30:16,124 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 11:30:16,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 11:30:16,135 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 220 statements into 1 equivalence classes. [2025-03-08 11:30:16,206 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 220 of 220 statements. [2025-03-08 11:30:16,207 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 11:30:16,207 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat