/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 14:10:03,700 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 14:10:03,765 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 14:10:03,769 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 14:10:03,769 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 14:10:03,799 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 14:10:03,799 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 14:10:03,800 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 14:10:03,806 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 14:10:03,810 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 14:10:03,810 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 14:10:03,810 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 14:10:03,811 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 14:10:03,812 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 14:10:03,812 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 14:10:03,812 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 14:10:03,812 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 14:10:03,813 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 14:10:03,813 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 14:10:03,813 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 14:10:03,813 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 14:10:03,814 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 14:10:03,814 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 14:10:03,814 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 14:10:03,814 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 14:10:03,814 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 14:10:03,814 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 14:10:03,815 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 14:10:03,815 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 14:10:03,815 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 14:10:03,816 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 14:10:03,816 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 14:10:03,817 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 14:10:03,817 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 14:10:03,817 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 14:10:03,817 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 14:10:03,817 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 14:10:03,817 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 14:10:03,817 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 14:10:03,818 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 14:10:03,818 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 14:10:03,818 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 14:10:03,818 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 14:10:03,818 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 14:10:04,036 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 14:10:04,054 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 14:10:04,056 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 14:10:04,057 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 14:10:04,058 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 14:10:04,058 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c [2023-12-21 14:10:05,360 ERROR L? ?]: Error during toolchain job processing: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.cdt.parser.UltimateCdtExternalSettingsProvider.getSettings(UltimateCdtExternalSettingsProvider.java:67) at org.eclipse.cdt.core.settings.model.extension.CExternalSettingProvider.getSettings(CExternalSettingProvider.java:48) at org.eclipse.cdt.internal.core.settings.model.ExtensionContainerFactory$CExtensionSettingProviderDescriptor.getContainer(ExtensionContainerFactory.java:110) at org.eclipse.cdt.internal.core.settings.model.ExtensionContainerFactory.createContainer(ExtensionContainerFactory.java:186) at org.eclipse.cdt.internal.core.settings.model.CExternalSettingsManager$ContainerDescriptor.(CExternalSettingsManager.java:147) at org.eclipse.cdt.internal.core.settings.model.CExternalSettingsManager.checkExternalSettingsChange(CExternalSettingsManager.java:683) at org.eclipse.cdt.internal.core.settings.model.CExternalSettingsManager.processContainerChange(CExternalSettingsManager.java:501) at org.eclipse.cdt.internal.core.settings.model.CExternalSettingsManager$2.run(CExternalSettingsManager.java:615) at org.eclipse.cdt.internal.core.settings.model.CProjectDescriptionManager$5.run(CProjectDescriptionManager.java:508) at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:2292) at org.eclipse.cdt.internal.core.settings.model.CProjectDescriptionManager.runAtomic(CProjectDescriptionManager.java:504) at org.eclipse.cdt.internal.core.settings.model.CProjectDescriptionManager$4.run(CProjectDescriptionManager.java:484) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-12-21 14:10:05,376 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 14:10:05,643 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 14:10:05,643 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c [2023-12-21 14:10:05,663 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eba1757fb/ed87f41ca5854157b4009c3206e7e011/FLAG4da8dec8e [2023-12-21 14:10:05,674 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eba1757fb/ed87f41ca5854157b4009c3206e7e011 [2023-12-21 14:10:05,676 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 14:10:05,677 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 14:10:05,678 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 14:10:05,678 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 14:10:05,682 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 14:10:05,683 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:10:05" (1/1) ... [2023-12-21 14:10:05,684 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78373d39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:10:05, skipping insertion in model container [2023-12-21 14:10:05,684 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:10:05" (1/1) ... [2023-12-21 14:10:05,740 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 14:10:06,011 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c[11904,11917] [2023-12-21 14:10:06,064 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 14:10:06,078 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 14:10:06,171 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c[11904,11917] [2023-12-21 14:10:06,204 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 14:10:06,220 INFO L206 MainTranslator]: Completed translation [2023-12-21 14:10:06,221 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:10:06 WrapperNode [2023-12-21 14:10:06,221 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 14:10:06,222 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 14:10:06,222 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 14:10:06,222 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 14:10:06,228 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:10:06" (1/1) ... [2023-12-21 14:10:06,250 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:10:06" (1/1) ... [2023-12-21 14:10:06,295 INFO L138 Inliner]: procedures = 25, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1041 [2023-12-21 14:10:06,295 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 14:10:06,296 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 14:10:06,296 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 14:10:06,296 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 14:10:06,306 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:10:06" (1/1) ... [2023-12-21 14:10:06,306 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:10:06" (1/1) ... [2023-12-21 14:10:06,310 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:10:06" (1/1) ... [2023-12-21 14:10:06,334 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]. [2023-12-21 14:10:06,335 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:10:06" (1/1) ... [2023-12-21 14:10:06,335 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:10:06" (1/1) ... [2023-12-21 14:10:06,346 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:10:06" (1/1) ... [2023-12-21 14:10:06,352 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:10:06" (1/1) ... [2023-12-21 14:10:06,355 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:10:06" (1/1) ... [2023-12-21 14:10:06,358 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:10:06" (1/1) ... [2023-12-21 14:10:06,362 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 14:10:06,363 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 14:10:06,363 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 14:10:06,363 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 14:10:06,364 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:10:06" (1/1) ... [2023-12-21 14:10:06,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 14:10:06,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 14:10:06,421 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) [2023-12-21 14:10:06,444 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 [2023-12-21 14:10:06,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 14:10:06,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 14:10:06,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 14:10:06,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 14:10:06,601 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 14:10:06,603 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 14:10:07,366 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 14:10:07,400 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 14:10:07,400 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-21 14:10:07,401 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:10:07 BoogieIcfgContainer [2023-12-21 14:10:07,401 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 14:10:07,407 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 14:10:07,407 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 14:10:07,410 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 14:10:07,410 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 02:10:05" (1/3) ... [2023-12-21 14:10:07,411 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f465fd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:10:07, skipping insertion in model container [2023-12-21 14:10:07,411 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:10:06" (2/3) ... [2023-12-21 14:10:07,413 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f465fd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:10:07, skipping insertion in model container [2023-12-21 14:10:07,413 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:10:07" (3/3) ... [2023-12-21 14:10:07,414 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c [2023-12-21 14:10:07,427 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 14:10:07,427 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 14:10:07,472 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 14:10:07,478 INFO L357 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, mHoare=true, 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;@72418c2a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 14:10:07,479 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 14:10:07,485 INFO L276 IsEmpty]: Start isEmpty. Operand has 252 states, 250 states have (on average 1.684) internal successors, (421), 251 states have internal predecessors, (421), 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) [2023-12-21 14:10:07,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-21 14:10:07,499 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:10:07,499 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:10:07,500 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:10:07,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:10:07,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1115430117, now seen corresponding path program 1 times [2023-12-21 14:10:07,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:10:07,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832519946] [2023-12-21 14:10:07,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:10:07,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:10:07,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:10:08,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:10:08,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:10:08,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832519946] [2023-12-21 14:10:08,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832519946] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:10:08,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:10:08,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:10:08,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617415366] [2023-12-21 14:10:08,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:10:08,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 14:10:08,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:10:08,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 14:10:08,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 14:10:08,058 INFO L87 Difference]: Start difference. First operand has 252 states, 250 states have (on average 1.684) internal successors, (421), 251 states have internal predecessors, (421), 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 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 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) [2023-12-21 14:10:08,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:10:08,235 INFO L93 Difference]: Finished difference Result 465 states and 763 transitions. [2023-12-21 14:10:08,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 14:10:08,238 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 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 90 [2023-12-21 14:10:08,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:10:08,247 INFO L225 Difference]: With dead ends: 465 [2023-12-21 14:10:08,247 INFO L226 Difference]: Without dead ends: 250 [2023-12-21 14:10:08,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:10:08,255 INFO L413 NwaCegarLoop]: 413 mSDtfsCounter, 112 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 1084 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:10:08,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 1084 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:10:08,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2023-12-21 14:10:08,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 250. [2023-12-21 14:10:08,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 249 states have (on average 1.497991967871486) internal successors, (373), 249 states have internal predecessors, (373), 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) [2023-12-21 14:10:08,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 373 transitions. [2023-12-21 14:10:08,296 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 373 transitions. Word has length 90 [2023-12-21 14:10:08,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:10:08,296 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 373 transitions. [2023-12-21 14:10:08,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 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) [2023-12-21 14:10:08,297 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 373 transitions. [2023-12-21 14:10:08,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-12-21 14:10:08,301 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:10:08,301 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:10:08,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 14:10:08,301 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:10:08,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:10:08,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1339121178, now seen corresponding path program 1 times [2023-12-21 14:10:08,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:10:08,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535404108] [2023-12-21 14:10:08,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:10:08,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:10:08,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:10:08,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:10:08,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:10:08,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535404108] [2023-12-21 14:10:08,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535404108] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:10:08,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:10:08,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:10:08,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445824932] [2023-12-21 14:10:08,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:10:08,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:10:08,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:10:08,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:10:08,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:10:08,499 INFO L87 Difference]: Start difference. First operand 250 states and 373 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 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) [2023-12-21 14:10:08,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:10:08,540 INFO L93 Difference]: Finished difference Result 568 states and 879 transitions. [2023-12-21 14:10:08,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:10:08,541 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 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 129 [2023-12-21 14:10:08,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:10:08,546 INFO L225 Difference]: With dead ends: 568 [2023-12-21 14:10:08,546 INFO L226 Difference]: Without dead ends: 367 [2023-12-21 14:10:08,549 INFO L412 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 [2023-12-21 14:10:08,551 INFO L413 NwaCegarLoop]: 457 mSDtfsCounter, 207 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:10:08,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 757 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:10:08,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2023-12-21 14:10:08,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 365. [2023-12-21 14:10:08,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 364 states have (on average 1.5247252747252746) internal successors, (555), 364 states have internal predecessors, (555), 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) [2023-12-21 14:10:08,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 555 transitions. [2023-12-21 14:10:08,576 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 555 transitions. Word has length 129 [2023-12-21 14:10:08,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:10:08,576 INFO L495 AbstractCegarLoop]: Abstraction has 365 states and 555 transitions. [2023-12-21 14:10:08,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 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) [2023-12-21 14:10:08,577 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 555 transitions. [2023-12-21 14:10:08,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-21 14:10:08,579 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:10:08,579 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:10:08,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-21 14:10:08,580 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:10:08,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:10:08,581 INFO L85 PathProgramCache]: Analyzing trace with hash 721130796, now seen corresponding path program 1 times [2023-12-21 14:10:08,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:10:08,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912098935] [2023-12-21 14:10:08,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:10:08,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:10:08,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:10:08,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:10:08,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:10:08,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912098935] [2023-12-21 14:10:08,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912098935] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:10:08,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:10:08,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:10:08,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319653785] [2023-12-21 14:10:08,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:10:08,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:10:08,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:10:08,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:10:08,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:10:08,737 INFO L87 Difference]: Start difference. First operand 365 states and 555 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 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) [2023-12-21 14:10:08,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:10:08,761 INFO L93 Difference]: Finished difference Result 883 states and 1380 transitions. [2023-12-21 14:10:08,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:10:08,762 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 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 131 [2023-12-21 14:10:08,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:10:08,765 INFO L225 Difference]: With dead ends: 883 [2023-12-21 14:10:08,765 INFO L226 Difference]: Without dead ends: 573 [2023-12-21 14:10:08,765 INFO L412 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 [2023-12-21 14:10:08,767 INFO L413 NwaCegarLoop]: 354 mSDtfsCounter, 194 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:10:08,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 642 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:10:08,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2023-12-21 14:10:08,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 571. [2023-12-21 14:10:08,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 570 states have (on average 1.5456140350877192) internal successors, (881), 570 states have internal predecessors, (881), 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) [2023-12-21 14:10:08,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 881 transitions. [2023-12-21 14:10:08,792 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 881 transitions. Word has length 131 [2023-12-21 14:10:08,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:10:08,792 INFO L495 AbstractCegarLoop]: Abstraction has 571 states and 881 transitions. [2023-12-21 14:10:08,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 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) [2023-12-21 14:10:08,793 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 881 transitions. [2023-12-21 14:10:08,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-21 14:10:08,795 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:10:08,795 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:10:08,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-21 14:10:08,795 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:10:08,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:10:08,797 INFO L85 PathProgramCache]: Analyzing trace with hash 2114557193, now seen corresponding path program 1 times [2023-12-21 14:10:08,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:10:08,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686489759] [2023-12-21 14:10:08,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:10:08,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:10:08,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:10:08,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:10:08,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:10:08,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686489759] [2023-12-21 14:10:08,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686489759] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:10:08,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:10:08,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:10:08,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187806859] [2023-12-21 14:10:08,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:10:08,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:10:08,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:10:08,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:10:08,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:10:08,948 INFO L87 Difference]: Start difference. First operand 571 states and 881 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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) [2023-12-21 14:10:08,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:10:08,974 INFO L93 Difference]: Finished difference Result 1443 states and 2268 transitions. [2023-12-21 14:10:08,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:10:08,975 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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 133 [2023-12-21 14:10:08,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:10:08,982 INFO L225 Difference]: With dead ends: 1443 [2023-12-21 14:10:08,982 INFO L226 Difference]: Without dead ends: 933 [2023-12-21 14:10:08,986 INFO L412 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 [2023-12-21 14:10:08,992 INFO L413 NwaCegarLoop]: 409 mSDtfsCounter, 181 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 685 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:10:08,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 685 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:10:08,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 933 states. [2023-12-21 14:10:09,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 933 to 931. [2023-12-21 14:10:09,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 931 states, 930 states have (on average 1.5580645161290323) internal successors, (1449), 930 states have internal predecessors, (1449), 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) [2023-12-21 14:10:09,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 931 states to 931 states and 1449 transitions. [2023-12-21 14:10:09,012 INFO L78 Accepts]: Start accepts. Automaton has 931 states and 1449 transitions. Word has length 133 [2023-12-21 14:10:09,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:10:09,012 INFO L495 AbstractCegarLoop]: Abstraction has 931 states and 1449 transitions. [2023-12-21 14:10:09,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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) [2023-12-21 14:10:09,013 INFO L276 IsEmpty]: Start isEmpty. Operand 931 states and 1449 transitions. [2023-12-21 14:10:09,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-21 14:10:09,015 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:10:09,015 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:10:09,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-21 14:10:09,016 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:10:09,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:10:09,017 INFO L85 PathProgramCache]: Analyzing trace with hash 2083837645, now seen corresponding path program 1 times [2023-12-21 14:10:09,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:10:09,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383948212] [2023-12-21 14:10:09,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:10:09,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:10:09,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:10:09,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:10:09,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:10:09,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383948212] [2023-12-21 14:10:09,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383948212] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:10:09,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:10:09,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:10:09,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683611585] [2023-12-21 14:10:09,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:10:09,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:10:09,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:10:09,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:10:09,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:10:09,126 INFO L87 Difference]: Start difference. First operand 931 states and 1449 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 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) [2023-12-21 14:10:09,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:10:09,157 INFO L93 Difference]: Finished difference Result 2409 states and 3792 transitions. [2023-12-21 14:10:09,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:10:09,158 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 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 135 [2023-12-21 14:10:09,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:10:09,164 INFO L225 Difference]: With dead ends: 2409 [2023-12-21 14:10:09,164 INFO L226 Difference]: Without dead ends: 1545 [2023-12-21 14:10:09,166 INFO L412 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 [2023-12-21 14:10:09,168 INFO L413 NwaCegarLoop]: 385 mSDtfsCounter, 168 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:10:09,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 649 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:10:09,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1545 states. [2023-12-21 14:10:09,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1545 to 1543. [2023-12-21 14:10:09,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1543 states, 1542 states have (on average 1.5622568093385214) internal successors, (2409), 1542 states have internal predecessors, (2409), 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) [2023-12-21 14:10:09,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1543 states to 1543 states and 2409 transitions. [2023-12-21 14:10:09,200 INFO L78 Accepts]: Start accepts. Automaton has 1543 states and 2409 transitions. Word has length 135 [2023-12-21 14:10:09,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:10:09,200 INFO L495 AbstractCegarLoop]: Abstraction has 1543 states and 2409 transitions. [2023-12-21 14:10:09,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 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) [2023-12-21 14:10:09,200 INFO L276 IsEmpty]: Start isEmpty. Operand 1543 states and 2409 transitions. [2023-12-21 14:10:09,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-21 14:10:09,203 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:10:09,204 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:10:09,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-21 14:10:09,204 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:10:09,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:10:09,205 INFO L85 PathProgramCache]: Analyzing trace with hash -188964043, now seen corresponding path program 1 times [2023-12-21 14:10:09,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:10:09,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216584931] [2023-12-21 14:10:09,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:10:09,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:10:09,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:10:09,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:10:09,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:10:09,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216584931] [2023-12-21 14:10:09,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216584931] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:10:09,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:10:09,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:10:09,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640165533] [2023-12-21 14:10:09,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:10:09,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:10:09,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:10:09,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:10:09,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:10:09,316 INFO L87 Difference]: Start difference. First operand 1543 states and 2409 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 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) [2023-12-21 14:10:09,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:10:09,354 INFO L93 Difference]: Finished difference Result 4019 states and 6312 transitions. [2023-12-21 14:10:09,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:10:09,355 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 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 137 [2023-12-21 14:10:09,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:10:09,365 INFO L225 Difference]: With dead ends: 4019 [2023-12-21 14:10:09,366 INFO L226 Difference]: Without dead ends: 2549 [2023-12-21 14:10:09,368 INFO L412 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 [2023-12-21 14:10:09,369 INFO L413 NwaCegarLoop]: 330 mSDtfsCounter, 155 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:10:09,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 582 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:10:09,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2549 states. [2023-12-21 14:10:09,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2549 to 2547. [2023-12-21 14:10:09,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2547 states, 2546 states have (on average 1.558915946582875) internal successors, (3969), 2546 states have internal predecessors, (3969), 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) [2023-12-21 14:10:09,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2547 states to 2547 states and 3969 transitions. [2023-12-21 14:10:09,434 INFO L78 Accepts]: Start accepts. Automaton has 2547 states and 3969 transitions. Word has length 137 [2023-12-21 14:10:09,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:10:09,435 INFO L495 AbstractCegarLoop]: Abstraction has 2547 states and 3969 transitions. [2023-12-21 14:10:09,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 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) [2023-12-21 14:10:09,435 INFO L276 IsEmpty]: Start isEmpty. Operand 2547 states and 3969 transitions. [2023-12-21 14:10:09,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-21 14:10:09,440 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:10:09,441 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:10:09,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-21 14:10:09,441 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:10:09,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:10:09,441 INFO L85 PathProgramCache]: Analyzing trace with hash 838170598, now seen corresponding path program 1 times [2023-12-21 14:10:09,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:10:09,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006942824] [2023-12-21 14:10:09,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:10:09,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:10:09,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:10:09,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:10:09,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:10:09,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006942824] [2023-12-21 14:10:09,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006942824] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:10:09,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:10:09,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:10:09,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859517554] [2023-12-21 14:10:09,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:10:09,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:10:09,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:10:09,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:10:09,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:10:09,586 INFO L87 Difference]: Start difference. First operand 2547 states and 3969 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 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) [2023-12-21 14:10:09,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:10:09,631 INFO L93 Difference]: Finished difference Result 6581 states and 10272 transitions. [2023-12-21 14:10:09,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:10:09,632 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 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 139 [2023-12-21 14:10:09,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:10:09,647 INFO L225 Difference]: With dead ends: 6581 [2023-12-21 14:10:09,647 INFO L226 Difference]: Without dead ends: 4113 [2023-12-21 14:10:09,652 INFO L412 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 [2023-12-21 14:10:09,653 INFO L413 NwaCegarLoop]: 337 mSDtfsCounter, 142 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:10:09,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 577 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:10:09,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4113 states. [2023-12-21 14:10:09,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4113 to 4111. [2023-12-21 14:10:09,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4111 states, 4110 states have (on average 1.5476885644768856) internal successors, (6361), 4110 states have internal predecessors, (6361), 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) [2023-12-21 14:10:09,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4111 states to 4111 states and 6361 transitions. [2023-12-21 14:10:09,749 INFO L78 Accepts]: Start accepts. Automaton has 4111 states and 6361 transitions. Word has length 139 [2023-12-21 14:10:09,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:10:09,750 INFO L495 AbstractCegarLoop]: Abstraction has 4111 states and 6361 transitions. [2023-12-21 14:10:09,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 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) [2023-12-21 14:10:09,750 INFO L276 IsEmpty]: Start isEmpty. Operand 4111 states and 6361 transitions. [2023-12-21 14:10:09,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 14:10:09,758 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:10:09,758 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:10:09,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-21 14:10:09,759 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:10:09,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:10:09,759 INFO L85 PathProgramCache]: Analyzing trace with hash 451860380, now seen corresponding path program 1 times [2023-12-21 14:10:09,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:10:09,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250571720] [2023-12-21 14:10:09,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:10:09,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:10:09,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:10:09,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:10:09,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:10:09,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250571720] [2023-12-21 14:10:09,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250571720] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:10:09,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:10:09,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:10:09,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154895562] [2023-12-21 14:10:09,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:10:09,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 14:10:09,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:10:09,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 14:10:09,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-21 14:10:09,994 INFO L87 Difference]: Start difference. First operand 4111 states and 6361 transitions. Second operand has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 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) [2023-12-21 14:10:10,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:10:10,582 INFO L93 Difference]: Finished difference Result 43368 states and 66790 transitions. [2023-12-21 14:10:10,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-21 14:10:10,583 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 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 141 [2023-12-21 14:10:10,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:10:10,702 INFO L225 Difference]: With dead ends: 43368 [2023-12-21 14:10:10,702 INFO L226 Difference]: Without dead ends: 39342 [2023-12-21 14:10:10,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2023-12-21 14:10:10,722 INFO L413 NwaCegarLoop]: 537 mSDtfsCounter, 2680 mSDsluCounter, 3081 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2680 SdHoareTripleChecker+Valid, 3618 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 14:10:10,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2680 Valid, 3618 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 14:10:10,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39342 states. [2023-12-21 14:10:11,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39342 to 8071. [2023-12-21 14:10:11,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8071 states, 8070 states have (on average 1.5187112763320942) internal successors, (12256), 8070 states have internal predecessors, (12256), 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) [2023-12-21 14:10:11,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8071 states to 8071 states and 12256 transitions. [2023-12-21 14:10:11,252 INFO L78 Accepts]: Start accepts. Automaton has 8071 states and 12256 transitions. Word has length 141 [2023-12-21 14:10:11,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:10:11,253 INFO L495 AbstractCegarLoop]: Abstraction has 8071 states and 12256 transitions. [2023-12-21 14:10:11,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 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) [2023-12-21 14:10:11,253 INFO L276 IsEmpty]: Start isEmpty. Operand 8071 states and 12256 transitions. [2023-12-21 14:10:11,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-21 14:10:11,270 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:10:11,271 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:10:11,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-21 14:10:11,271 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:10:11,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:10:11,272 INFO L85 PathProgramCache]: Analyzing trace with hash -471869955, now seen corresponding path program 1 times [2023-12-21 14:10:11,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:10:11,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199762544] [2023-12-21 14:10:11,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:10:11,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:10:11,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:10:11,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:10:11,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:10:11,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199762544] [2023-12-21 14:10:11,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199762544] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:10:11,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:10:11,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:10:11,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942846667] [2023-12-21 14:10:11,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:10:11,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 14:10:11,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:10:11,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 14:10:11,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-21 14:10:11,736 INFO L87 Difference]: Start difference. First operand 8071 states and 12256 transitions. Second operand has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 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) [2023-12-21 14:10:12,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:10:12,051 INFO L93 Difference]: Finished difference Result 16059 states and 24413 transitions. [2023-12-21 14:10:12,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 14:10:12,052 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 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 145 [2023-12-21 14:10:12,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:10:12,067 INFO L225 Difference]: With dead ends: 16059 [2023-12-21 14:10:12,069 INFO L226 Difference]: Without dead ends: 8073 [2023-12-21 14:10:12,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2023-12-21 14:10:12,083 INFO L413 NwaCegarLoop]: 418 mSDtfsCounter, 1402 mSDsluCounter, 958 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1402 SdHoareTripleChecker+Valid, 1376 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:10:12,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1402 Valid, 1376 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:10:12,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8073 states. [2023-12-21 14:10:12,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8073 to 8071. [2023-12-21 14:10:12,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8071 states, 8070 states have (on average 1.50272614622057) internal successors, (12127), 8070 states have internal predecessors, (12127), 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) [2023-12-21 14:10:12,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8071 states to 8071 states and 12127 transitions. [2023-12-21 14:10:12,263 INFO L78 Accepts]: Start accepts. Automaton has 8071 states and 12127 transitions. Word has length 145 [2023-12-21 14:10:12,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:10:12,263 INFO L495 AbstractCegarLoop]: Abstraction has 8071 states and 12127 transitions. [2023-12-21 14:10:12,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 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) [2023-12-21 14:10:12,264 INFO L276 IsEmpty]: Start isEmpty. Operand 8071 states and 12127 transitions. [2023-12-21 14:10:12,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-21 14:10:12,280 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:10:12,280 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:10:12,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-21 14:10:12,281 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:10:12,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:10:12,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1310245116, now seen corresponding path program 1 times [2023-12-21 14:10:12,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:10:12,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490291348] [2023-12-21 14:10:12,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:10:12,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:10:12,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:10:12,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:10:12,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:10:12,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490291348] [2023-12-21 14:10:12,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490291348] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:10:12,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:10:12,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:10:12,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322238310] [2023-12-21 14:10:12,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:10:12,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:10:12,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:10:12,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:10:12,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:10:12,377 INFO L87 Difference]: Start difference. First operand 8071 states and 12127 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 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) [2023-12-21 14:10:12,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:10:12,448 INFO L93 Difference]: Finished difference Result 18750 states and 28162 transitions. [2023-12-21 14:10:12,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:10:12,449 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 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 145 [2023-12-21 14:10:12,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:10:12,467 INFO L225 Difference]: With dead ends: 18750 [2023-12-21 14:10:12,467 INFO L226 Difference]: Without dead ends: 10762 [2023-12-21 14:10:12,478 INFO L412 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 [2023-12-21 14:10:12,478 INFO L413 NwaCegarLoop]: 499 mSDtfsCounter, 220 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:10:12,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 702 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:10:12,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10762 states. [2023-12-21 14:10:12,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10762 to 10760. [2023-12-21 14:10:12,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10760 states, 10759 states have (on average 1.4812714936332372) internal successors, (15937), 10759 states have internal predecessors, (15937), 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) [2023-12-21 14:10:12,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10760 states to 10760 states and 15937 transitions. [2023-12-21 14:10:12,655 INFO L78 Accepts]: Start accepts. Automaton has 10760 states and 15937 transitions. Word has length 145 [2023-12-21 14:10:12,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:10:12,656 INFO L495 AbstractCegarLoop]: Abstraction has 10760 states and 15937 transitions. [2023-12-21 14:10:12,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 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) [2023-12-21 14:10:12,656 INFO L276 IsEmpty]: Start isEmpty. Operand 10760 states and 15937 transitions. [2023-12-21 14:10:12,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-21 14:10:12,676 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:10:12,676 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:10:12,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-21 14:10:12,676 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:10:12,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:10:12,677 INFO L85 PathProgramCache]: Analyzing trace with hash -358043885, now seen corresponding path program 1 times [2023-12-21 14:10:12,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:10:12,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205181474] [2023-12-21 14:10:12,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:10:12,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:10:12,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:10:12,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:10:12,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:10:12,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205181474] [2023-12-21 14:10:12,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205181474] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:10:12,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:10:12,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:10:12,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504496302] [2023-12-21 14:10:12,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:10:12,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:10:12,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:10:12,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:10:12,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:10:12,757 INFO L87 Difference]: Start difference. First operand 10760 states and 15937 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 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) [2023-12-21 14:10:13,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:10:13,075 INFO L93 Difference]: Finished difference Result 30945 states and 45836 transitions. [2023-12-21 14:10:13,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:10:13,076 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 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 146 [2023-12-21 14:10:13,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:10:13,118 INFO L225 Difference]: With dead ends: 30945 [2023-12-21 14:10:13,119 INFO L226 Difference]: Without dead ends: 21368 [2023-12-21 14:10:13,138 INFO L412 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 [2023-12-21 14:10:13,138 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 219 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 14:10:13,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 390 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 14:10:13,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21368 states. [2023-12-21 14:10:13,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21368 to 21366. [2023-12-21 14:10:13,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21366 states, 21365 states have (on average 1.475263281067166) internal successors, (31519), 21365 states have internal predecessors, (31519), 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) [2023-12-21 14:10:13,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21366 states to 21366 states and 31519 transitions. [2023-12-21 14:10:13,606 INFO L78 Accepts]: Start accepts. Automaton has 21366 states and 31519 transitions. Word has length 146 [2023-12-21 14:10:13,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:10:13,607 INFO L495 AbstractCegarLoop]: Abstraction has 21366 states and 31519 transitions. [2023-12-21 14:10:13,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 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) [2023-12-21 14:10:13,607 INFO L276 IsEmpty]: Start isEmpty. Operand 21366 states and 31519 transitions. [2023-12-21 14:10:13,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-21 14:10:13,651 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:10:13,651 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:10:13,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-21 14:10:13,652 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:10:13,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:10:13,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1860880210, now seen corresponding path program 1 times [2023-12-21 14:10:13,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:10:13,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708125521] [2023-12-21 14:10:13,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:10:13,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:10:13,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:10:13,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:10:13,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:10:13,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708125521] [2023-12-21 14:10:13,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708125521] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:10:13,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:10:13,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:10:13,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068214870] [2023-12-21 14:10:13,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:10:13,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:10:13,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:10:13,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:10:13,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:10:13,821 INFO L87 Difference]: Start difference. First operand 21366 states and 31519 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 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) [2023-12-21 14:10:14,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:10:14,189 INFO L93 Difference]: Finished difference Result 61045 states and 89864 transitions. [2023-12-21 14:10:14,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:10:14,189 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 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 146 [2023-12-21 14:10:14,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:10:14,363 INFO L225 Difference]: With dead ends: 61045 [2023-12-21 14:10:14,363 INFO L226 Difference]: Without dead ends: 42389 [2023-12-21 14:10:14,394 INFO L412 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 [2023-12-21 14:10:14,395 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 201 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 14:10:14,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 402 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 14:10:14,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42389 states. [2023-12-21 14:10:15,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42389 to 42387. [2023-12-21 14:10:15,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42387 states, 42386 states have (on average 1.4667578917567121) internal successors, (62170), 42386 states have internal predecessors, (62170), 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) [2023-12-21 14:10:15,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42387 states to 42387 states and 62170 transitions. [2023-12-21 14:10:15,374 INFO L78 Accepts]: Start accepts. Automaton has 42387 states and 62170 transitions. Word has length 146 [2023-12-21 14:10:15,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:10:15,375 INFO L495 AbstractCegarLoop]: Abstraction has 42387 states and 62170 transitions. [2023-12-21 14:10:15,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 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) [2023-12-21 14:10:15,375 INFO L276 IsEmpty]: Start isEmpty. Operand 42387 states and 62170 transitions. [2023-12-21 14:10:15,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-21 14:10:15,443 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:10:15,443 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:10:15,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-21 14:10:15,443 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:10:15,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:10:15,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1520592105, now seen corresponding path program 1 times [2023-12-21 14:10:15,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:10:15,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274404387] [2023-12-21 14:10:15,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:10:15,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:10:15,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:10:15,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:10:15,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:10:15,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274404387] [2023-12-21 14:10:15,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274404387] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:10:15,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:10:15,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:10:15,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170310881] [2023-12-21 14:10:15,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:10:15,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 14:10:15,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:10:15,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 14:10:15,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-21 14:10:15,765 INFO L87 Difference]: Start difference. First operand 42387 states and 62170 transitions. Second operand has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 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) [2023-12-21 14:10:16,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:10:16,994 INFO L93 Difference]: Finished difference Result 260923 states and 382591 transitions. [2023-12-21 14:10:16,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 14:10:16,994 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 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 146 [2023-12-21 14:10:16,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:10:17,699 INFO L225 Difference]: With dead ends: 260923 [2023-12-21 14:10:17,700 INFO L226 Difference]: Without dead ends: 226873 [2023-12-21 14:10:17,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-21 14:10:17,812 INFO L413 NwaCegarLoop]: 605 mSDtfsCounter, 2142 mSDsluCounter, 1712 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2142 SdHoareTripleChecker+Valid, 2317 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 14:10:17,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2142 Valid, 2317 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 14:10:17,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226873 states. [2023-12-21 14:10:19,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226873 to 78933. [2023-12-21 14:10:19,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78933 states, 78932 states have (on average 1.4596868190341052) internal successors, (115216), 78932 states have internal predecessors, (115216), 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) [2023-12-21 14:10:20,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78933 states to 78933 states and 115216 transitions. [2023-12-21 14:10:20,171 INFO L78 Accepts]: Start accepts. Automaton has 78933 states and 115216 transitions. Word has length 146 [2023-12-21 14:10:20,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:10:20,172 INFO L495 AbstractCegarLoop]: Abstraction has 78933 states and 115216 transitions. [2023-12-21 14:10:20,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 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) [2023-12-21 14:10:20,172 INFO L276 IsEmpty]: Start isEmpty. Operand 78933 states and 115216 transitions. [2023-12-21 14:10:20,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-21 14:10:20,317 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:10:20,317 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:10:20,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-21 14:10:20,317 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:10:20,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:10:20,318 INFO L85 PathProgramCache]: Analyzing trace with hash 448973167, now seen corresponding path program 1 times [2023-12-21 14:10:20,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:10:20,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544453546] [2023-12-21 14:10:20,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:10:20,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:10:20,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:10:20,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:10:20,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:10:20,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544453546] [2023-12-21 14:10:20,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544453546] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:10:20,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:10:20,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:10:20,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286080299] [2023-12-21 14:10:20,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:10:20,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 14:10:20,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:10:20,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 14:10:20,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-21 14:10:20,573 INFO L87 Difference]: Start difference. First operand 78933 states and 115216 transitions. Second operand has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 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) [2023-12-21 14:10:22,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:10:22,133 INFO L93 Difference]: Finished difference Result 296571 states and 434415 transitions. [2023-12-21 14:10:22,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 14:10:22,134 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 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 146 [2023-12-21 14:10:22,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:10:22,726 INFO L225 Difference]: With dead ends: 296571 [2023-12-21 14:10:22,726 INFO L226 Difference]: Without dead ends: 262521 [2023-12-21 14:10:22,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-21 14:10:22,813 INFO L413 NwaCegarLoop]: 489 mSDtfsCounter, 2572 mSDsluCounter, 1649 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2572 SdHoareTripleChecker+Valid, 2138 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:10:22,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2572 Valid, 2138 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:10:23,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262521 states. [2023-12-21 14:10:25,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262521 to 132343. [2023-12-21 14:10:25,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132343 states, 132342 states have (on average 1.454398452494295) internal successors, (192478), 132342 states have internal predecessors, (192478), 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) [2023-12-21 14:10:26,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132343 states to 132343 states and 192478 transitions. [2023-12-21 14:10:26,069 INFO L78 Accepts]: Start accepts. Automaton has 132343 states and 192478 transitions. Word has length 146 [2023-12-21 14:10:26,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:10:26,069 INFO L495 AbstractCegarLoop]: Abstraction has 132343 states and 192478 transitions. [2023-12-21 14:10:26,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 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) [2023-12-21 14:10:26,070 INFO L276 IsEmpty]: Start isEmpty. Operand 132343 states and 192478 transitions. [2023-12-21 14:10:26,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-21 14:10:26,224 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:10:26,224 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:10:26,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-21 14:10:26,225 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:10:26,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:10:26,225 INFO L85 PathProgramCache]: Analyzing trace with hash 475720243, now seen corresponding path program 1 times [2023-12-21 14:10:26,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:10:26,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10481111] [2023-12-21 14:10:26,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:10:26,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:10:26,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:10:26,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:10:26,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:10:26,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10481111] [2023-12-21 14:10:26,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10481111] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:10:26,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:10:26,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:10:26,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228147547] [2023-12-21 14:10:26,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:10:26,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 14:10:26,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:10:26,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 14:10:26,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-21 14:10:26,480 INFO L87 Difference]: Start difference. First operand 132343 states and 192478 transitions. Second operand has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 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) [2023-12-21 14:10:28,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:10:28,086 INFO L93 Difference]: Finished difference Result 331755 states and 485535 transitions. [2023-12-21 14:10:28,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 14:10:28,086 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 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 146 [2023-12-21 14:10:28,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:10:28,562 INFO L225 Difference]: With dead ends: 331755 [2023-12-21 14:10:28,562 INFO L226 Difference]: Without dead ends: 297705 [2023-12-21 14:10:28,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-21 14:10:28,650 INFO L413 NwaCegarLoop]: 457 mSDtfsCounter, 2388 mSDsluCounter, 1924 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2388 SdHoareTripleChecker+Valid, 2381 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 14:10:28,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2388 Valid, 2381 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 14:10:28,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297705 states. [2023-12-21 14:10:31,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297705 to 167567. [2023-12-21 14:10:31,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167567 states, 167566 states have (on average 1.4535526300084742) internal successors, (243566), 167566 states have internal predecessors, (243566), 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) [2023-12-21 14:10:32,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167567 states to 167567 states and 243566 transitions. [2023-12-21 14:10:32,506 INFO L78 Accepts]: Start accepts. Automaton has 167567 states and 243566 transitions. Word has length 146 [2023-12-21 14:10:32,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:10:32,508 INFO L495 AbstractCegarLoop]: Abstraction has 167567 states and 243566 transitions. [2023-12-21 14:10:32,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 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) [2023-12-21 14:10:32,508 INFO L276 IsEmpty]: Start isEmpty. Operand 167567 states and 243566 transitions. [2023-12-21 14:10:32,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-21 14:10:32,653 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:10:32,662 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:10:32,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-21 14:10:32,663 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:10:32,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:10:32,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1049617665, now seen corresponding path program 1 times [2023-12-21 14:10:32,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:10:32,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959679359] [2023-12-21 14:10:32,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:10:32,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:10:32,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:10:32,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:10:32,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:10:32,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959679359] [2023-12-21 14:10:32,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959679359] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:10:32,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:10:32,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:10:32,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981517272] [2023-12-21 14:10:32,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:10:32,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 14:10:32,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:10:32,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 14:10:32,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-21 14:10:32,876 INFO L87 Difference]: Start difference. First operand 167567 states and 243566 transitions. Second operand has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 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) [2023-12-21 14:10:34,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:10:34,743 INFO L93 Difference]: Finished difference Result 366283 states and 535679 transitions. [2023-12-21 14:10:34,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 14:10:34,743 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 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 146 [2023-12-21 14:10:34,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:10:35,267 INFO L225 Difference]: With dead ends: 366283 [2023-12-21 14:10:35,267 INFO L226 Difference]: Without dead ends: 332233 [2023-12-21 14:10:35,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-21 14:10:35,362 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 2128 mSDsluCounter, 2162 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2128 SdHoareTripleChecker+Valid, 2635 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 14:10:35,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2128 Valid, 2635 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 14:10:35,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332233 states. [2023-12-21 14:10:38,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332233 to 203331. [2023-12-21 14:10:38,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203331 states, 203330 states have (on average 1.453568091280185) internal successors, (295554), 203330 states have internal predecessors, (295554), 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) [2023-12-21 14:10:39,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203331 states to 203331 states and 295554 transitions. [2023-12-21 14:10:39,486 INFO L78 Accepts]: Start accepts. Automaton has 203331 states and 295554 transitions. Word has length 146 [2023-12-21 14:10:39,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:10:39,487 INFO L495 AbstractCegarLoop]: Abstraction has 203331 states and 295554 transitions. [2023-12-21 14:10:39,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 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) [2023-12-21 14:10:39,487 INFO L276 IsEmpty]: Start isEmpty. Operand 203331 states and 295554 transitions. [2023-12-21 14:10:39,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-21 14:10:39,640 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:10:39,640 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:10:39,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-21 14:10:39,640 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:10:39,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:10:39,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1439973475, now seen corresponding path program 1 times [2023-12-21 14:10:39,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:10:39,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810247446] [2023-12-21 14:10:39,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:10:39,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:10:39,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:10:39,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:10:39,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:10:39,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810247446] [2023-12-21 14:10:39,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810247446] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:10:39,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:10:39,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:10:39,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993988823] [2023-12-21 14:10:39,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:10:39,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 14:10:39,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:10:39,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 14:10:39,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-21 14:10:39,824 INFO L87 Difference]: Start difference. First operand 203331 states and 295554 transitions. Second operand has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 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) [2023-12-21 14:10:41,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:10:41,746 INFO L93 Difference]: Finished difference Result 402235 states and 587975 transitions. [2023-12-21 14:10:41,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 14:10:41,747 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 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 146 [2023-12-21 14:10:41,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:10:42,297 INFO L225 Difference]: With dead ends: 402235 [2023-12-21 14:10:42,297 INFO L226 Difference]: Without dead ends: 368185 [2023-12-21 14:10:42,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-21 14:10:42,453 INFO L413 NwaCegarLoop]: 498 mSDtfsCounter, 2246 mSDsluCounter, 2325 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2246 SdHoareTripleChecker+Valid, 2823 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 14:10:42,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2246 Valid, 2823 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 14:10:42,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368185 states. [2023-12-21 14:10:46,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368185 to 239477. [2023-12-21 14:10:46,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239477 states, 239476 states have (on average 1.45384088593429) internal successors, (348160), 239476 states have internal predecessors, (348160), 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) [2023-12-21 14:10:46,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239477 states to 239477 states and 348160 transitions. [2023-12-21 14:10:46,802 INFO L78 Accepts]: Start accepts. Automaton has 239477 states and 348160 transitions. Word has length 146 [2023-12-21 14:10:46,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:10:46,803 INFO L495 AbstractCegarLoop]: Abstraction has 239477 states and 348160 transitions. [2023-12-21 14:10:46,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 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) [2023-12-21 14:10:46,803 INFO L276 IsEmpty]: Start isEmpty. Operand 239477 states and 348160 transitions. [2023-12-21 14:10:46,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-21 14:10:46,961 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:10:46,961 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:10:46,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-21 14:10:46,961 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:10:46,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:10:46,961 INFO L85 PathProgramCache]: Analyzing trace with hash -909955183, now seen corresponding path program 1 times [2023-12-21 14:10:46,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:10:46,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848118668] [2023-12-21 14:10:46,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:10:46,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:10:47,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:10:47,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:10:47,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:10:47,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848118668] [2023-12-21 14:10:47,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848118668] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:10:47,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:10:47,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:10:47,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464599700] [2023-12-21 14:10:47,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:10:47,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 14:10:47,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:10:47,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 14:10:47,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-21 14:10:47,648 INFO L87 Difference]: Start difference. First operand 239477 states and 348160 transitions. Second operand has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 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) [2023-12-21 14:10:49,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:10:49,750 INFO L93 Difference]: Finished difference Result 416545 states and 609257 transitions. [2023-12-21 14:10:49,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 14:10:49,750 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 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 146 [2023-12-21 14:10:49,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:10:50,384 INFO L225 Difference]: With dead ends: 416545 [2023-12-21 14:10:50,385 INFO L226 Difference]: Without dead ends: 393503 [2023-12-21 14:10:50,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-21 14:10:50,439 INFO L413 NwaCegarLoop]: 509 mSDtfsCounter, 2244 mSDsluCounter, 2208 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2244 SdHoareTripleChecker+Valid, 2717 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 14:10:50,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2244 Valid, 2717 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 14:10:50,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393503 states. [2023-12-21 14:10:54,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393503 to 264795. [2023-12-21 14:10:54,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264795 states, 264794 states have (on average 1.45562965928231) internal successors, (385442), 264794 states have internal predecessors, (385442), 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) [2023-12-21 14:10:55,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264795 states to 264795 states and 385442 transitions. [2023-12-21 14:10:55,299 INFO L78 Accepts]: Start accepts. Automaton has 264795 states and 385442 transitions. Word has length 146 [2023-12-21 14:10:55,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:10:55,300 INFO L495 AbstractCegarLoop]: Abstraction has 264795 states and 385442 transitions. [2023-12-21 14:10:55,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 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) [2023-12-21 14:10:55,300 INFO L276 IsEmpty]: Start isEmpty. Operand 264795 states and 385442 transitions. [2023-12-21 14:10:55,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-21 14:10:55,488 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:10:55,489 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:10:55,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-21 14:10:55,489 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:10:55,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:10:55,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1783412801, now seen corresponding path program 1 times [2023-12-21 14:10:55,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:10:55,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028042883] [2023-12-21 14:10:55,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:10:55,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:10:55,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:10:55,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:10:55,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:10:55,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028042883] [2023-12-21 14:10:55,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028042883] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:10:55,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:10:55,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:10:55,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112107745] [2023-12-21 14:10:55,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:10:55,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 14:10:55,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:10:55,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 14:10:55,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:10:55,596 INFO L87 Difference]: Start difference. First operand 264795 states and 385442 transitions. Second operand has 5 states, 5 states have (on average 29.6) internal successors, (148), 4 states have internal predecessors, (148), 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) [2023-12-21 14:10:57,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:10:57,570 INFO L93 Difference]: Finished difference Result 529477 states and 770747 transitions. [2023-12-21 14:10:57,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 14:10:57,571 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.6) internal successors, (148), 4 states have internal predecessors, (148), 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 148 [2023-12-21 14:10:57,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:10:57,971 INFO L225 Difference]: With dead ends: 529477 [2023-12-21 14:10:57,972 INFO L226 Difference]: Without dead ends: 264795 [2023-12-21 14:10:58,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 14:10:58,112 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 830 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 830 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:10:58,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [830 Valid, 218 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:10:58,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264795 states. [2023-12-21 14:11:01,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264795 to 264795. [2023-12-21 14:11:01,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264795 states, 264794 states have (on average 1.443136929084496) internal successors, (382134), 264794 states have internal predecessors, (382134), 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) [2023-12-21 14:11:02,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264795 states to 264795 states and 382134 transitions. [2023-12-21 14:11:02,289 INFO L78 Accepts]: Start accepts. Automaton has 264795 states and 382134 transitions. Word has length 148 [2023-12-21 14:11:02,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:11:02,289 INFO L495 AbstractCegarLoop]: Abstraction has 264795 states and 382134 transitions. [2023-12-21 14:11:02,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.6) internal successors, (148), 4 states have internal predecessors, (148), 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) [2023-12-21 14:11:02,290 INFO L276 IsEmpty]: Start isEmpty. Operand 264795 states and 382134 transitions. [2023-12-21 14:11:02,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-21 14:11:02,484 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:11:02,484 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:11:02,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-21 14:11:02,484 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:11:02,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:11:02,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1638601141, now seen corresponding path program 1 times [2023-12-21 14:11:02,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:11:02,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429128338] [2023-12-21 14:11:02,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:11:02,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:11:02,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:11:02,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:11:02,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:11:02,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429128338] [2023-12-21 14:11:02,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429128338] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:11:02,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:11:02,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:11:02,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318049718] [2023-12-21 14:11:02,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:11:02,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 14:11:02,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:11:02,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 14:11:02,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:11:02,585 INFO L87 Difference]: Start difference. First operand 264795 states and 382134 transitions. Second operand has 5 states, 5 states have (on average 29.6) internal successors, (148), 4 states have internal predecessors, (148), 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) [2023-12-21 14:11:04,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:11:04,400 INFO L93 Difference]: Finished difference Result 391461 states and 566349 transitions. [2023-12-21 14:11:04,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 14:11:04,400 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.6) internal successors, (148), 4 states have internal predecessors, (148), 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 148 [2023-12-21 14:11:04,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:11:04,559 INFO L225 Difference]: With dead ends: 391461 [2023-12-21 14:11:04,559 INFO L226 Difference]: Without dead ends: 133116 [2023-12-21 14:11:04,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 14:11:04,622 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 873 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 14:11:04,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [873 Valid, 186 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 14:11:04,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133116 states. [2023-12-21 14:11:05,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133116 to 133116. [2023-12-21 14:11:06,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133116 states, 133115 states have (on average 1.4407542350599105) internal successors, (191786), 133115 states have internal predecessors, (191786), 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) [2023-12-21 14:11:06,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133116 states to 133116 states and 191786 transitions. [2023-12-21 14:11:06,573 INFO L78 Accepts]: Start accepts. Automaton has 133116 states and 191786 transitions. Word has length 148 [2023-12-21 14:11:06,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:11:06,573 INFO L495 AbstractCegarLoop]: Abstraction has 133116 states and 191786 transitions. [2023-12-21 14:11:06,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.6) internal successors, (148), 4 states have internal predecessors, (148), 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) [2023-12-21 14:11:06,573 INFO L276 IsEmpty]: Start isEmpty. Operand 133116 states and 191786 transitions. [2023-12-21 14:11:06,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-21 14:11:06,667 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:11:06,667 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:11:06,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-21 14:11:06,667 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:11:06,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:11:06,668 INFO L85 PathProgramCache]: Analyzing trace with hash 865133077, now seen corresponding path program 1 times [2023-12-21 14:11:06,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:11:06,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600811145] [2023-12-21 14:11:06,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:11:06,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:11:06,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:11:06,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:11:06,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:11:06,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600811145] [2023-12-21 14:11:06,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600811145] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:11:06,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:11:06,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:11:06,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703533145] [2023-12-21 14:11:06,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:11:06,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 14:11:06,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:11:06,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 14:11:06,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:11:06,783 INFO L87 Difference]: Start difference. First operand 133116 states and 191786 transitions. Second operand has 5 states, 5 states have (on average 29.6) internal successors, (148), 4 states have internal predecessors, (148), 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) [2023-12-21 14:11:07,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:11:07,833 INFO L93 Difference]: Finished difference Result 266167 states and 383500 transitions. [2023-12-21 14:11:07,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 14:11:07,834 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.6) internal successors, (148), 4 states have internal predecessors, (148), 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 148 [2023-12-21 14:11:07,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:11:07,997 INFO L225 Difference]: With dead ends: 266167 [2023-12-21 14:11:07,997 INFO L226 Difference]: Without dead ends: 133116 [2023-12-21 14:11:08,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 14:11:08,072 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 838 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 838 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:11:08,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [838 Valid, 202 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:11:08,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133116 states. [2023-12-21 14:11:09,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133116 to 133116. [2023-12-21 14:11:09,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133116 states, 133115 states have (on average 1.4300492055741276) internal successors, (190361), 133115 states have internal predecessors, (190361), 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) [2023-12-21 14:11:10,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133116 states to 133116 states and 190361 transitions. [2023-12-21 14:11:10,022 INFO L78 Accepts]: Start accepts. Automaton has 133116 states and 190361 transitions. Word has length 148 [2023-12-21 14:11:10,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:11:10,022 INFO L495 AbstractCegarLoop]: Abstraction has 133116 states and 190361 transitions. [2023-12-21 14:11:10,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.6) internal successors, (148), 4 states have internal predecessors, (148), 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) [2023-12-21 14:11:10,022 INFO L276 IsEmpty]: Start isEmpty. Operand 133116 states and 190361 transitions. [2023-12-21 14:11:10,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-21 14:11:10,122 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:11:10,123 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:11:10,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-21 14:11:10,123 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:11:10,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:11:10,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1580940875, now seen corresponding path program 1 times [2023-12-21 14:11:10,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:11:10,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861459848] [2023-12-21 14:11:10,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:11:10,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:11:10,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:11:10,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:11:10,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:11:10,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861459848] [2023-12-21 14:11:10,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861459848] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:11:10,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:11:10,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:11:10,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109089596] [2023-12-21 14:11:10,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:11:10,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:11:10,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:11:10,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:11:10,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:11:10,220 INFO L87 Difference]: Start difference. First operand 133116 states and 190361 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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) [2023-12-21 14:11:11,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:11:11,420 INFO L93 Difference]: Finished difference Result 255056 states and 365291 transitions. [2023-12-21 14:11:11,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:11:11,420 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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 148 [2023-12-21 14:11:11,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:11:11,625 INFO L225 Difference]: With dead ends: 255056 [2023-12-21 14:11:11,625 INFO L226 Difference]: Without dead ends: 128372 [2023-12-21 14:11:11,695 INFO L412 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 [2023-12-21 14:11:11,698 INFO L413 NwaCegarLoop]: 319 mSDtfsCounter, 131 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:11:11,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 547 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:11:11,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128372 states. [2023-12-21 14:11:13,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128372 to 128370. [2023-12-21 14:11:13,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128370 states, 128369 states have (on average 1.4212076124297923) internal successors, (182439), 128369 states have internal predecessors, (182439), 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) [2023-12-21 14:11:13,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128370 states to 128370 states and 182439 transitions. [2023-12-21 14:11:13,401 INFO L78 Accepts]: Start accepts. Automaton has 128370 states and 182439 transitions. Word has length 148 [2023-12-21 14:11:13,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:11:13,402 INFO L495 AbstractCegarLoop]: Abstraction has 128370 states and 182439 transitions. [2023-12-21 14:11:13,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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) [2023-12-21 14:11:13,402 INFO L276 IsEmpty]: Start isEmpty. Operand 128370 states and 182439 transitions. [2023-12-21 14:11:13,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-21 14:11:13,462 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:11:13,462 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:11:13,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-21 14:11:13,463 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:11:13,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:11:13,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1274358571, now seen corresponding path program 1 times [2023-12-21 14:11:13,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:11:13,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300390546] [2023-12-21 14:11:13,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:11:13,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:11:13,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:11:14,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:11:14,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:11:14,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300390546] [2023-12-21 14:11:14,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300390546] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:11:14,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:11:14,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:11:14,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759157509] [2023-12-21 14:11:14,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:11:14,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:11:14,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:11:14,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:11:14,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:11:14,030 INFO L87 Difference]: Start difference. First operand 128370 states and 182439 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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) [2023-12-21 14:11:14,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:11:14,467 INFO L93 Difference]: Finished difference Result 189342 states and 269217 transitions. [2023-12-21 14:11:14,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:11:14,468 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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 148 [2023-12-21 14:11:14,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:11:14,541 INFO L225 Difference]: With dead ends: 189342 [2023-12-21 14:11:14,541 INFO L226 Difference]: Without dead ends: 64851 [2023-12-21 14:11:14,616 INFO L412 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 [2023-12-21 14:11:14,616 INFO L413 NwaCegarLoop]: 344 mSDtfsCounter, 140 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:11:14,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 540 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:11:14,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64851 states. [2023-12-21 14:11:15,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64851 to 64849. [2023-12-21 14:11:15,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64849 states, 64848 states have (on average 1.4103133481371823) internal successors, (91456), 64848 states have internal predecessors, (91456), 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) [2023-12-21 14:11:15,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64849 states to 64849 states and 91456 transitions. [2023-12-21 14:11:15,782 INFO L78 Accepts]: Start accepts. Automaton has 64849 states and 91456 transitions. Word has length 148 [2023-12-21 14:11:15,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:11:15,782 INFO L495 AbstractCegarLoop]: Abstraction has 64849 states and 91456 transitions. [2023-12-21 14:11:15,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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) [2023-12-21 14:11:15,782 INFO L276 IsEmpty]: Start isEmpty. Operand 64849 states and 91456 transitions. [2023-12-21 14:11:15,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-21 14:11:15,809 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:11:15,809 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:11:15,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-21 14:11:15,810 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:11:15,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:11:15,810 INFO L85 PathProgramCache]: Analyzing trace with hash 584382467, now seen corresponding path program 1 times [2023-12-21 14:11:15,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:11:15,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581096283] [2023-12-21 14:11:15,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:11:15,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:11:15,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:11:16,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:11:16,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:11:16,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581096283] [2023-12-21 14:11:16,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581096283] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:11:16,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:11:16,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:11:16,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985431272] [2023-12-21 14:11:16,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:11:16,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 14:11:16,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:11:16,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 14:11:16,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-21 14:11:16,253 INFO L87 Difference]: Start difference. First operand 64849 states and 91456 transitions. Second operand has 9 states, 9 states have (on average 16.444444444444443) internal successors, (148), 8 states have internal predecessors, (148), 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) [2023-12-21 14:11:18,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:11:18,650 INFO L93 Difference]: Finished difference Result 477243 states and 674168 transitions. [2023-12-21 14:11:18,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-21 14:11:18,651 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 16.444444444444443) internal successors, (148), 8 states have internal predecessors, (148), 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 148 [2023-12-21 14:11:18,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:11:19,270 INFO L225 Difference]: With dead ends: 477243 [2023-12-21 14:11:19,270 INFO L226 Difference]: Without dead ends: 432505 [2023-12-21 14:11:19,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=168, Invalid=534, Unknown=0, NotChecked=0, Total=702 [2023-12-21 14:11:19,352 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 3279 mSDsluCounter, 1000 mSDsCounter, 0 mSdLazyCounter, 1015 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3279 SdHoareTripleChecker+Valid, 1197 SdHoareTripleChecker+Invalid, 1028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-21 14:11:19,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3279 Valid, 1197 Invalid, 1028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1015 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-21 14:11:19,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432505 states. [2023-12-21 14:11:22,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432505 to 64871. [2023-12-21 14:11:22,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64871 states, 64870 states have (on average 1.4102050254354863) internal successors, (91480), 64870 states have internal predecessors, (91480), 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) [2023-12-21 14:11:22,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64871 states to 64871 states and 91480 transitions. [2023-12-21 14:11:22,298 INFO L78 Accepts]: Start accepts. Automaton has 64871 states and 91480 transitions. Word has length 148 [2023-12-21 14:11:22,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:11:22,299 INFO L495 AbstractCegarLoop]: Abstraction has 64871 states and 91480 transitions. [2023-12-21 14:11:22,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.444444444444443) internal successors, (148), 8 states have internal predecessors, (148), 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) [2023-12-21 14:11:22,299 INFO L276 IsEmpty]: Start isEmpty. Operand 64871 states and 91480 transitions. [2023-12-21 14:11:22,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-21 14:11:22,328 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:11:22,329 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:11:22,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-21 14:11:22,329 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:11:22,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:11:22,329 INFO L85 PathProgramCache]: Analyzing trace with hash 99450767, now seen corresponding path program 1 times [2023-12-21 14:11:22,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:11:22,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852075739] [2023-12-21 14:11:22,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:11:22,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:11:22,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:11:22,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:11:22,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:11:22,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852075739] [2023-12-21 14:11:22,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852075739] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:11:22,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:11:22,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:11:22,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488626751] [2023-12-21 14:11:22,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:11:22,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 14:11:22,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:11:22,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 14:11:22,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-21 14:11:22,879 INFO L87 Difference]: Start difference. First operand 64871 states and 91480 transitions. Second operand has 9 states, 9 states have (on average 16.444444444444443) internal successors, (148), 8 states have internal predecessors, (148), 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) [2023-12-21 14:11:25,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:11:25,434 INFO L93 Difference]: Finished difference Result 572198 states and 805112 transitions. [2023-12-21 14:11:25,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-21 14:11:25,435 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 16.444444444444443) internal successors, (148), 8 states have internal predecessors, (148), 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 148 [2023-12-21 14:11:25,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:11:26,266 INFO L225 Difference]: With dead ends: 572198 [2023-12-21 14:11:26,267 INFO L226 Difference]: Without dead ends: 509604 [2023-12-21 14:11:26,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=201, Invalid=611, Unknown=0, NotChecked=0, Total=812 [2023-12-21 14:11:26,393 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 3365 mSDsluCounter, 1123 mSDsCounter, 0 mSdLazyCounter, 1178 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3365 SdHoareTripleChecker+Valid, 1393 SdHoareTripleChecker+Invalid, 1185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 14:11:26,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3365 Valid, 1393 Invalid, 1185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1178 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 14:11:26,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509604 states. [2023-12-21 14:11:29,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509604 to 65040. [2023-12-21 14:11:29,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65040 states, 65039 states have (on average 1.4099232768031489) internal successors, (91700), 65039 states have internal predecessors, (91700), 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) [2023-12-21 14:11:29,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65040 states to 65040 states and 91700 transitions. [2023-12-21 14:11:29,636 INFO L78 Accepts]: Start accepts. Automaton has 65040 states and 91700 transitions. Word has length 148 [2023-12-21 14:11:29,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:11:29,636 INFO L495 AbstractCegarLoop]: Abstraction has 65040 states and 91700 transitions. [2023-12-21 14:11:29,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.444444444444443) internal successors, (148), 8 states have internal predecessors, (148), 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) [2023-12-21 14:11:29,637 INFO L276 IsEmpty]: Start isEmpty. Operand 65040 states and 91700 transitions. [2023-12-21 14:11:29,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-21 14:11:29,667 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:11:29,667 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:11:29,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-21 14:11:29,667 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:11:29,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:11:29,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1433649206, now seen corresponding path program 1 times [2023-12-21 14:11:29,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:11:29,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017139239] [2023-12-21 14:11:29,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:11:29,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:11:29,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:11:29,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:11:29,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:11:29,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017139239] [2023-12-21 14:11:29,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017139239] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:11:29,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:11:29,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:11:29,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794840070] [2023-12-21 14:11:29,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:11:29,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:11:29,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:11:29,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:11:29,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:11:29,929 INFO L87 Difference]: Start difference. First operand 65040 states and 91700 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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) [2023-12-21 14:11:30,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:11:30,422 INFO L93 Difference]: Finished difference Result 191922 states and 270268 transitions. [2023-12-21 14:11:30,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:11:30,422 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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 148 [2023-12-21 14:11:30,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:11:30,580 INFO L225 Difference]: With dead ends: 191922 [2023-12-21 14:11:30,580 INFO L226 Difference]: Without dead ends: 129316 [2023-12-21 14:11:30,645 INFO L412 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 [2023-12-21 14:11:30,646 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 193 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 14:11:30,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 379 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 14:11:30,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129316 states. [2023-12-21 14:11:32,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129316 to 129314. [2023-12-21 14:11:32,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129314 states, 129313 states have (on average 1.4014677565287326) internal successors, (181228), 129313 states have internal predecessors, (181228), 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) [2023-12-21 14:11:32,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129314 states to 129314 states and 181228 transitions. [2023-12-21 14:11:32,623 INFO L78 Accepts]: Start accepts. Automaton has 129314 states and 181228 transitions. Word has length 148 [2023-12-21 14:11:32,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:11:32,623 INFO L495 AbstractCegarLoop]: Abstraction has 129314 states and 181228 transitions. [2023-12-21 14:11:32,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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) [2023-12-21 14:11:32,623 INFO L276 IsEmpty]: Start isEmpty. Operand 129314 states and 181228 transitions. [2023-12-21 14:11:32,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-21 14:11:32,691 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:11:32,691 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:11:32,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-21 14:11:32,691 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:11:32,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:11:32,692 INFO L85 PathProgramCache]: Analyzing trace with hash -421190053, now seen corresponding path program 1 times [2023-12-21 14:11:32,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:11:32,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030603401] [2023-12-21 14:11:32,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:11:32,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:11:32,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:11:32,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:11:32,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:11:32,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030603401] [2023-12-21 14:11:32,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030603401] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:11:32,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:11:32,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:11:32,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112138157] [2023-12-21 14:11:32,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:11:32,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:11:32,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:11:32,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:11:32,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:11:32,788 INFO L87 Difference]: Start difference. First operand 129314 states and 181228 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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) [2023-12-21 14:11:33,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:11:33,669 INFO L93 Difference]: Finished difference Result 189942 states and 266286 transitions. [2023-12-21 14:11:33,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:11:33,669 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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 148 [2023-12-21 14:11:33,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:11:33,744 INFO L225 Difference]: With dead ends: 189942 [2023-12-21 14:11:33,744 INFO L226 Difference]: Without dead ends: 65384 [2023-12-21 14:11:33,789 INFO L412 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 [2023-12-21 14:11:33,790 INFO L413 NwaCegarLoop]: 306 mSDtfsCounter, 114 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:11:33,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 504 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:11:33,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65384 states. [2023-12-21 14:11:34,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65384 to 65382. [2023-12-21 14:11:34,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65382 states, 65381 states have (on average 1.3899450910815068) internal successors, (90876), 65381 states have internal predecessors, (90876), 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) [2023-12-21 14:11:34,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65382 states to 65382 states and 90876 transitions. [2023-12-21 14:11:34,668 INFO L78 Accepts]: Start accepts. Automaton has 65382 states and 90876 transitions. Word has length 148 [2023-12-21 14:11:34,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:11:34,668 INFO L495 AbstractCegarLoop]: Abstraction has 65382 states and 90876 transitions. [2023-12-21 14:11:34,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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) [2023-12-21 14:11:34,668 INFO L276 IsEmpty]: Start isEmpty. Operand 65382 states and 90876 transitions. [2023-12-21 14:11:34,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-21 14:11:34,698 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:11:34,698 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:11:34,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-21 14:11:34,698 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:11:34,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:11:34,699 INFO L85 PathProgramCache]: Analyzing trace with hash -2080636087, now seen corresponding path program 1 times [2023-12-21 14:11:34,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:11:34,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602928814] [2023-12-21 14:11:34,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:11:34,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:11:34,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:11:35,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:11:35,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:11:35,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602928814] [2023-12-21 14:11:35,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602928814] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:11:35,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:11:35,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:11:35,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770278731] [2023-12-21 14:11:35,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:11:35,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 14:11:35,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:11:35,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 14:11:35,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-21 14:11:35,204 INFO L87 Difference]: Start difference. First operand 65382 states and 90876 transitions. Second operand has 9 states, 9 states have (on average 16.444444444444443) internal successors, (148), 8 states have internal predecessors, (148), 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) [2023-12-21 14:11:37,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:11:37,143 INFO L93 Difference]: Finished difference Result 399487 states and 555289 transitions. [2023-12-21 14:11:37,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-21 14:11:37,144 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 16.444444444444443) internal successors, (148), 8 states have internal predecessors, (148), 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 148 [2023-12-21 14:11:37,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:11:37,598 INFO L225 Difference]: With dead ends: 399487 [2023-12-21 14:11:37,598 INFO L226 Difference]: Without dead ends: 334152 [2023-12-21 14:11:37,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=195, Invalid=561, Unknown=0, NotChecked=0, Total=756 [2023-12-21 14:11:37,975 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 2199 mSDsluCounter, 1016 mSDsCounter, 0 mSdLazyCounter, 1039 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2199 SdHoareTripleChecker+Valid, 1211 SdHoareTripleChecker+Invalid, 1053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 14:11:37,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2199 Valid, 1211 Invalid, 1053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1039 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 14:11:38,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334152 states. [2023-12-21 14:11:40,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334152 to 110634. [2023-12-21 14:11:40,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110634 states, 110633 states have (on average 1.3872895067475346) internal successors, (153480), 110633 states have internal predecessors, (153480), 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) [2023-12-21 14:11:40,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110634 states to 110634 states and 153480 transitions. [2023-12-21 14:11:40,476 INFO L78 Accepts]: Start accepts. Automaton has 110634 states and 153480 transitions. Word has length 148 [2023-12-21 14:11:40,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:11:40,477 INFO L495 AbstractCegarLoop]: Abstraction has 110634 states and 153480 transitions. [2023-12-21 14:11:40,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.444444444444443) internal successors, (148), 8 states have internal predecessors, (148), 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) [2023-12-21 14:11:40,477 INFO L276 IsEmpty]: Start isEmpty. Operand 110634 states and 153480 transitions. [2023-12-21 14:11:40,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-21 14:11:40,522 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:11:40,522 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:11:40,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-21 14:11:40,522 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:11:40,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:11:40,523 INFO L85 PathProgramCache]: Analyzing trace with hash 977496437, now seen corresponding path program 1 times [2023-12-21 14:11:40,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:11:40,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145738626] [2023-12-21 14:11:40,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:11:40,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:11:40,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:11:40,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:11:40,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:11:40,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145738626] [2023-12-21 14:11:40,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145738626] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:11:40,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:11:40,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:11:40,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946678660] [2023-12-21 14:11:40,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:11:40,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:11:40,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:11:40,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:11:40,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:11:40,893 INFO L87 Difference]: Start difference. First operand 110634 states and 153480 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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) [2023-12-21 14:11:41,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:11:41,321 INFO L93 Difference]: Finished difference Result 153358 states and 213242 transitions. [2023-12-21 14:11:41,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:11:41,321 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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 148 [2023-12-21 14:11:41,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:11:41,373 INFO L225 Difference]: With dead ends: 153358 [2023-12-21 14:11:41,373 INFO L226 Difference]: Without dead ends: 48120 [2023-12-21 14:11:41,425 INFO L412 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 [2023-12-21 14:11:41,426 INFO L413 NwaCegarLoop]: 281 mSDtfsCounter, 96 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:11:41,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 476 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:11:41,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48120 states. [2023-12-21 14:11:42,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48120 to 48118. [2023-12-21 14:11:42,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48118 states, 48117 states have (on average 1.388199596816094) internal successors, (66796), 48117 states have internal predecessors, (66796), 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) [2023-12-21 14:11:42,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48118 states to 48118 states and 66796 transitions. [2023-12-21 14:11:42,166 INFO L78 Accepts]: Start accepts. Automaton has 48118 states and 66796 transitions. Word has length 148 [2023-12-21 14:11:42,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:11:42,166 INFO L495 AbstractCegarLoop]: Abstraction has 48118 states and 66796 transitions. [2023-12-21 14:11:42,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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) [2023-12-21 14:11:42,167 INFO L276 IsEmpty]: Start isEmpty. Operand 48118 states and 66796 transitions. [2023-12-21 14:11:42,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-21 14:11:42,186 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:11:42,186 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:11:42,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-21 14:11:42,186 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:11:42,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:11:42,187 INFO L85 PathProgramCache]: Analyzing trace with hash -61772973, now seen corresponding path program 1 times [2023-12-21 14:11:42,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:11:42,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067150097] [2023-12-21 14:11:42,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:11:42,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:11:42,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:11:42,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:11:42,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:11:42,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067150097] [2023-12-21 14:11:42,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067150097] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:11:42,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:11:42,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:11:42,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569663567] [2023-12-21 14:11:42,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:11:42,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:11:42,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:11:42,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:11:42,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:11:42,230 INFO L87 Difference]: Start difference. First operand 48118 states and 66796 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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) [2023-12-21 14:11:42,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:11:42,811 INFO L93 Difference]: Finished difference Result 94652 states and 131813 transitions. [2023-12-21 14:11:42,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:11:42,812 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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 149 [2023-12-21 14:11:42,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:11:42,851 INFO L225 Difference]: With dead ends: 94652 [2023-12-21 14:11:42,852 INFO L226 Difference]: Without dead ends: 47114 [2023-12-21 14:11:42,866 INFO L412 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 [2023-12-21 14:11:42,867 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 177 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:11:42,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 310 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:11:42,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47114 states. [2023-12-21 14:11:43,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47114 to 47114. [2023-12-21 14:11:43,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47114 states, 47113 states have (on average 1.383949228450746) internal successors, (65202), 47113 states have internal predecessors, (65202), 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) [2023-12-21 14:11:43,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47114 states to 47114 states and 65202 transitions. [2023-12-21 14:11:43,499 INFO L78 Accepts]: Start accepts. Automaton has 47114 states and 65202 transitions. Word has length 149 [2023-12-21 14:11:43,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:11:43,500 INFO L495 AbstractCegarLoop]: Abstraction has 47114 states and 65202 transitions. [2023-12-21 14:11:43,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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) [2023-12-21 14:11:43,500 INFO L276 IsEmpty]: Start isEmpty. Operand 47114 states and 65202 transitions. [2023-12-21 14:11:43,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-21 14:11:43,519 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:11:43,519 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:11:43,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-21 14:11:43,519 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:11:43,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:11:43,519 INFO L85 PathProgramCache]: Analyzing trace with hash -377226387, now seen corresponding path program 1 times [2023-12-21 14:11:43,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:11:43,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257538856] [2023-12-21 14:11:43,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:11:43,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:11:43,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:11:43,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:11:43,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:11:43,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257538856] [2023-12-21 14:11:43,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257538856] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:11:43,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:11:43,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:11:43,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025487890] [2023-12-21 14:11:43,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:11:43,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 14:11:43,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:11:43,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 14:11:43,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-21 14:11:43,794 INFO L87 Difference]: Start difference. First operand 47114 states and 65202 transitions. Second operand has 9 states, 9 states have (on average 16.555555555555557) internal successors, (149), 8 states have internal predecessors, (149), 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) [2023-12-21 14:11:45,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:11:45,389 INFO L93 Difference]: Finished difference Result 309896 states and 427300 transitions. [2023-12-21 14:11:45,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-21 14:11:45,390 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 16.555555555555557) internal successors, (149), 8 states have internal predecessors, (149), 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 149 [2023-12-21 14:11:45,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:11:45,800 INFO L225 Difference]: With dead ends: 309896 [2023-12-21 14:11:45,800 INFO L226 Difference]: Without dead ends: 264684 [2023-12-21 14:11:45,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=201, Invalid=611, Unknown=0, NotChecked=0, Total=812 [2023-12-21 14:11:45,859 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 2410 mSDsluCounter, 830 mSDsCounter, 0 mSdLazyCounter, 799 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2410 SdHoareTripleChecker+Valid, 1019 SdHoareTripleChecker+Invalid, 811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 14:11:45,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2410 Valid, 1019 Invalid, 811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 799 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 14:11:46,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264684 states. [2023-12-21 14:11:47,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264684 to 47182. [2023-12-21 14:11:47,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47182 states, 47181 states have (on average 1.3826328394904728) internal successors, (65234), 47181 states have internal predecessors, (65234), 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) [2023-12-21 14:11:47,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47182 states to 47182 states and 65234 transitions. [2023-12-21 14:11:47,509 INFO L78 Accepts]: Start accepts. Automaton has 47182 states and 65234 transitions. Word has length 149 [2023-12-21 14:11:47,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:11:47,510 INFO L495 AbstractCegarLoop]: Abstraction has 47182 states and 65234 transitions. [2023-12-21 14:11:47,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.555555555555557) internal successors, (149), 8 states have internal predecessors, (149), 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) [2023-12-21 14:11:47,510 INFO L276 IsEmpty]: Start isEmpty. Operand 47182 states and 65234 transitions. [2023-12-21 14:11:47,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-21 14:11:47,528 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:11:47,528 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:11:47,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-21 14:11:47,529 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:11:47,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:11:47,529 INFO L85 PathProgramCache]: Analyzing trace with hash 27469799, now seen corresponding path program 1 times [2023-12-21 14:11:47,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:11:47,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35390790] [2023-12-21 14:11:47,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:11:47,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:11:47,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:11:47,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:11:47,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:11:47,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35390790] [2023-12-21 14:11:47,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35390790] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:11:47,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:11:47,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:11:47,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046004141] [2023-12-21 14:11:47,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:11:47,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:11:47,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:11:47,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:11:47,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:11:47,755 INFO L87 Difference]: Start difference. First operand 47182 states and 65234 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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) [2023-12-21 14:11:47,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:11:47,922 INFO L93 Difference]: Finished difference Result 68306 states and 94396 transitions. [2023-12-21 14:11:47,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:11:47,923 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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 149 [2023-12-21 14:11:47,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:11:47,958 INFO L225 Difference]: With dead ends: 68306 [2023-12-21 14:11:47,958 INFO L226 Difference]: Without dead ends: 24720 [2023-12-21 14:11:47,988 INFO L412 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 [2023-12-21 14:11:47,989 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 107 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:11:47,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 446 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:11:48,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24720 states. [2023-12-21 14:11:48,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24720 to 24718. [2023-12-21 14:11:48,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24718 states, 24717 states have (on average 1.3682081158716672) internal successors, (33818), 24717 states have internal predecessors, (33818), 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) [2023-12-21 14:11:48,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24718 states to 24718 states and 33818 transitions. [2023-12-21 14:11:48,278 INFO L78 Accepts]: Start accepts. Automaton has 24718 states and 33818 transitions. Word has length 149 [2023-12-21 14:11:48,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:11:48,279 INFO L495 AbstractCegarLoop]: Abstraction has 24718 states and 33818 transitions. [2023-12-21 14:11:48,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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) [2023-12-21 14:11:48,279 INFO L276 IsEmpty]: Start isEmpty. Operand 24718 states and 33818 transitions. [2023-12-21 14:11:48,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-21 14:11:48,288 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:11:48,288 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:11:48,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-12-21 14:11:48,289 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:11:48,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:11:48,289 INFO L85 PathProgramCache]: Analyzing trace with hash -81776138, now seen corresponding path program 1 times [2023-12-21 14:11:48,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:11:48,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773870079] [2023-12-21 14:11:48,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:11:48,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:11:48,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:11:48,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:11:48,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:11:48,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773870079] [2023-12-21 14:11:48,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773870079] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:11:48,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:11:48,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:11:48,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671040116] [2023-12-21 14:11:48,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:11:48,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 14:11:48,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:11:48,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 14:11:48,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-21 14:11:48,744 INFO L87 Difference]: Start difference. First operand 24718 states and 33818 transitions. Second operand has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 8 states have internal predecessors, (150), 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) [2023-12-21 14:11:50,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:11:50,311 INFO L93 Difference]: Finished difference Result 158446 states and 216529 transitions. [2023-12-21 14:11:50,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-21 14:11:50,312 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 8 states have internal predecessors, (150), 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 150 [2023-12-21 14:11:50,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:11:50,460 INFO L225 Difference]: With dead ends: 158446 [2023-12-21 14:11:50,461 INFO L226 Difference]: Without dead ends: 134956 [2023-12-21 14:11:50,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=201, Invalid=611, Unknown=0, NotChecked=0, Total=812 [2023-12-21 14:11:50,482 INFO L413 NwaCegarLoop]: 329 mSDtfsCounter, 1724 mSDsluCounter, 1350 mSDsCounter, 0 mSdLazyCounter, 1340 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1724 SdHoareTripleChecker+Valid, 1679 SdHoareTripleChecker+Invalid, 1348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 14:11:50,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1724 Valid, 1679 Invalid, 1348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1340 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 14:11:50,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134956 states. [2023-12-21 14:11:51,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134956 to 24528. [2023-12-21 14:11:51,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24528 states, 24527 states have (on average 1.3670240958943205) internal successors, (33529), 24527 states have internal predecessors, (33529), 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) [2023-12-21 14:11:51,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24528 states to 24528 states and 33529 transitions. [2023-12-21 14:11:51,266 INFO L78 Accepts]: Start accepts. Automaton has 24528 states and 33529 transitions. Word has length 150 [2023-12-21 14:11:51,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:11:51,266 INFO L495 AbstractCegarLoop]: Abstraction has 24528 states and 33529 transitions. [2023-12-21 14:11:51,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 8 states have internal predecessors, (150), 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) [2023-12-21 14:11:51,267 INFO L276 IsEmpty]: Start isEmpty. Operand 24528 states and 33529 transitions. [2023-12-21 14:11:51,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-21 14:11:51,277 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:11:51,278 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:11:51,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-12-21 14:11:51,278 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:11:51,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:11:51,280 INFO L85 PathProgramCache]: Analyzing trace with hash 979532622, now seen corresponding path program 1 times [2023-12-21 14:11:51,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:11:51,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649829748] [2023-12-21 14:11:51,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:11:51,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:11:51,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:11:51,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:11:51,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:11:51,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649829748] [2023-12-21 14:11:51,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649829748] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:11:51,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:11:51,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:11:51,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010187236] [2023-12-21 14:11:51,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:11:51,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:11:51,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:11:51,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:11:51,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:11:51,457 INFO L87 Difference]: Start difference. First operand 24528 states and 33529 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 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) [2023-12-21 14:11:51,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:11:51,619 INFO L93 Difference]: Finished difference Result 35092 states and 47991 transitions. [2023-12-21 14:11:51,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:11:51,632 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 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 150 [2023-12-21 14:11:51,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:11:51,646 INFO L225 Difference]: With dead ends: 35092 [2023-12-21 14:11:51,646 INFO L226 Difference]: Without dead ends: 12810 [2023-12-21 14:11:51,662 INFO L412 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 [2023-12-21 14:11:51,662 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 86 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:11:51,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 421 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:11:51,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12810 states. [2023-12-21 14:11:51,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12810 to 12808. [2023-12-21 14:11:51,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12808 states, 12807 states have (on average 1.3508237682517372) internal successors, (17300), 12807 states have internal predecessors, (17300), 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) [2023-12-21 14:11:51,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12808 states to 12808 states and 17300 transitions. [2023-12-21 14:11:51,927 INFO L78 Accepts]: Start accepts. Automaton has 12808 states and 17300 transitions. Word has length 150 [2023-12-21 14:11:51,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:11:51,928 INFO L495 AbstractCegarLoop]: Abstraction has 12808 states and 17300 transitions. [2023-12-21 14:11:51,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 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) [2023-12-21 14:11:51,928 INFO L276 IsEmpty]: Start isEmpty. Operand 12808 states and 17300 transitions. [2023-12-21 14:11:51,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-21 14:11:51,933 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:11:51,933 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:11:51,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-12-21 14:11:51,933 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:11:51,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:11:51,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1426238117, now seen corresponding path program 1 times [2023-12-21 14:11:51,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:11:51,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588126411] [2023-12-21 14:11:51,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:11:51,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:11:51,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:11:52,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:11:52,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:11:52,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588126411] [2023-12-21 14:11:52,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588126411] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:11:52,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:11:52,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-21 14:11:52,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838786107] [2023-12-21 14:11:52,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:11:52,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 14:11:52,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:11:52,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 14:11:52,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-12-21 14:11:52,473 INFO L87 Difference]: Start difference. First operand 12808 states and 17300 transitions. Second operand has 12 states, 12 states have (on average 12.583333333333334) internal successors, (151), 11 states have internal predecessors, (151), 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) [2023-12-21 14:11:54,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:11:54,225 INFO L93 Difference]: Finished difference Result 65450 states and 87702 transitions. [2023-12-21 14:11:54,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-21 14:11:54,226 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 12.583333333333334) internal successors, (151), 11 states have internal predecessors, (151), 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 151 [2023-12-21 14:11:54,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:11:54,286 INFO L225 Difference]: With dead ends: 65450 [2023-12-21 14:11:54,286 INFO L226 Difference]: Without dead ends: 54392 [2023-12-21 14:11:54,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=367, Invalid=1115, Unknown=0, NotChecked=0, Total=1482 [2023-12-21 14:11:54,304 INFO L413 NwaCegarLoop]: 339 mSDtfsCounter, 2509 mSDsluCounter, 1714 mSDsCounter, 0 mSdLazyCounter, 1558 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2509 SdHoareTripleChecker+Valid, 2053 SdHoareTripleChecker+Invalid, 1599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:11:54,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2509 Valid, 2053 Invalid, 1599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1558 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-21 14:11:54,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54392 states. [2023-12-21 14:11:54,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54392 to 13796. [2023-12-21 14:11:54,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13796 states, 13795 states have (on average 1.3409206234142805) internal successors, (18498), 13795 states have internal predecessors, (18498), 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) [2023-12-21 14:11:54,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13796 states to 13796 states and 18498 transitions. [2023-12-21 14:11:54,640 INFO L78 Accepts]: Start accepts. Automaton has 13796 states and 18498 transitions. Word has length 151 [2023-12-21 14:11:54,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:11:54,640 INFO L495 AbstractCegarLoop]: Abstraction has 13796 states and 18498 transitions. [2023-12-21 14:11:54,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.583333333333334) internal successors, (151), 11 states have internal predecessors, (151), 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) [2023-12-21 14:11:54,640 INFO L276 IsEmpty]: Start isEmpty. Operand 13796 states and 18498 transitions. [2023-12-21 14:11:54,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-21 14:11:54,756 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:11:54,757 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:11:54,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-12-21 14:11:54,757 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:11:54,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:11:54,757 INFO L85 PathProgramCache]: Analyzing trace with hash 659243135, now seen corresponding path program 1 times [2023-12-21 14:11:54,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:11:54,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537625821] [2023-12-21 14:11:54,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:11:54,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:11:54,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:11:54,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:11:54,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:11:54,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537625821] [2023-12-21 14:11:54,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537625821] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:11:54,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:11:54,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:11:54,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7264792] [2023-12-21 14:11:54,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:11:54,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:11:54,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:11:54,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:11:54,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:11:54,815 INFO L87 Difference]: Start difference. First operand 13796 states and 18498 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 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) [2023-12-21 14:11:54,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:11:54,943 INFO L93 Difference]: Finished difference Result 25902 states and 34999 transitions. [2023-12-21 14:11:54,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:11:54,944 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 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 151 [2023-12-21 14:11:54,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:11:54,961 INFO L225 Difference]: With dead ends: 25902 [2023-12-21 14:11:54,961 INFO L226 Difference]: Without dead ends: 12954 [2023-12-21 14:11:54,972 INFO L412 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 [2023-12-21 14:11:54,973 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 158 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:11:54,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 253 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:11:54,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12954 states. [2023-12-21 14:11:55,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12954 to 12954. [2023-12-21 14:11:55,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12954 states, 12953 states have (on average 1.3442445765459738) internal successors, (17412), 12953 states have internal predecessors, (17412), 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) [2023-12-21 14:11:55,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12954 states to 12954 states and 17412 transitions. [2023-12-21 14:11:55,129 INFO L78 Accepts]: Start accepts. Automaton has 12954 states and 17412 transitions. Word has length 151 [2023-12-21 14:11:55,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:11:55,129 INFO L495 AbstractCegarLoop]: Abstraction has 12954 states and 17412 transitions. [2023-12-21 14:11:55,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 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) [2023-12-21 14:11:55,129 INFO L276 IsEmpty]: Start isEmpty. Operand 12954 states and 17412 transitions. [2023-12-21 14:11:55,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-21 14:11:55,137 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:11:55,137 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:11:55,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-12-21 14:11:55,137 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:11:55,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:11:55,138 INFO L85 PathProgramCache]: Analyzing trace with hash 421115051, now seen corresponding path program 1 times [2023-12-21 14:11:55,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:11:55,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759799214] [2023-12-21 14:11:55,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:11:55,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:11:55,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:11:55,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:11:55,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:11:55,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759799214] [2023-12-21 14:11:55,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759799214] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:11:55,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:11:55,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:11:55,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631004761] [2023-12-21 14:11:55,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:11:55,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:11:55,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:11:55,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:11:55,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:11:55,185 INFO L87 Difference]: Start difference. First operand 12954 states and 17412 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 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) [2023-12-21 14:11:55,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:11:55,308 INFO L93 Difference]: Finished difference Result 24620 states and 33283 transitions. [2023-12-21 14:11:55,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:11:55,308 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 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 152 [2023-12-21 14:11:55,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:11:55,323 INFO L225 Difference]: With dead ends: 24620 [2023-12-21 14:11:55,324 INFO L226 Difference]: Without dead ends: 12348 [2023-12-21 14:11:55,334 INFO L412 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 [2023-12-21 14:11:55,335 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 162 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:11:55,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 238 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:11:55,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12348 states. [2023-12-21 14:11:55,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12348 to 12348. [2023-12-21 14:11:55,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12348 states, 12347 states have (on average 1.340730541832024) internal successors, (16554), 12347 states have internal predecessors, (16554), 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) [2023-12-21 14:11:55,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12348 states to 12348 states and 16554 transitions. [2023-12-21 14:11:55,475 INFO L78 Accepts]: Start accepts. Automaton has 12348 states and 16554 transitions. Word has length 152 [2023-12-21 14:11:55,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:11:55,476 INFO L495 AbstractCegarLoop]: Abstraction has 12348 states and 16554 transitions. [2023-12-21 14:11:55,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 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) [2023-12-21 14:11:55,476 INFO L276 IsEmpty]: Start isEmpty. Operand 12348 states and 16554 transitions. [2023-12-21 14:11:55,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-21 14:11:55,481 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:11:55,482 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:11:55,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-12-21 14:11:55,482 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:11:55,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:11:55,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1467491497, now seen corresponding path program 1 times [2023-12-21 14:11:55,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:11:55,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924445184] [2023-12-21 14:11:55,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:11:55,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:11:55,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:11:55,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:11:55,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:11:55,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924445184] [2023-12-21 14:11:55,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924445184] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:11:55,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:11:55,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 14:11:55,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243608935] [2023-12-21 14:11:55,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:11:55,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 14:11:55,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:11:55,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 14:11:55,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 14:11:55,864 INFO L87 Difference]: Start difference. First operand 12348 states and 16554 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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) [2023-12-21 14:11:55,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:11:55,926 INFO L93 Difference]: Finished difference Result 22922 states and 30727 transitions. [2023-12-21 14:11:55,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 14:11:55,926 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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 152 [2023-12-21 14:11:55,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:11:55,943 INFO L225 Difference]: With dead ends: 22922 [2023-12-21 14:11:55,943 INFO L226 Difference]: Without dead ends: 12296 [2023-12-21 14:11:55,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 14:11:55,953 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 1 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:11:55,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 752 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:11:55,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12296 states. [2023-12-21 14:11:56,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12296 to 12296. [2023-12-21 14:11:56,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12296 states, 12295 states have (on average 1.3301342008946726) internal successors, (16354), 12295 states have internal predecessors, (16354), 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) [2023-12-21 14:11:56,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12296 states to 12296 states and 16354 transitions. [2023-12-21 14:11:56,102 INFO L78 Accepts]: Start accepts. Automaton has 12296 states and 16354 transitions. Word has length 152 [2023-12-21 14:11:56,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:11:56,102 INFO L495 AbstractCegarLoop]: Abstraction has 12296 states and 16354 transitions. [2023-12-21 14:11:56,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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) [2023-12-21 14:11:56,102 INFO L276 IsEmpty]: Start isEmpty. Operand 12296 states and 16354 transitions. [2023-12-21 14:11:56,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-21 14:11:56,109 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:11:56,109 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:11:56,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-12-21 14:11:56,109 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:11:56,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:11:56,110 INFO L85 PathProgramCache]: Analyzing trace with hash 327882625, now seen corresponding path program 1 times [2023-12-21 14:11:56,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:11:56,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985397117] [2023-12-21 14:11:56,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:11:56,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:11:56,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:11:56,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:11:56,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:11:56,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985397117] [2023-12-21 14:11:56,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985397117] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:11:56,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:11:56,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:11:56,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689501425] [2023-12-21 14:11:56,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:11:56,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 14:11:56,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:11:56,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 14:11:56,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-21 14:11:56,291 INFO L87 Difference]: Start difference. First operand 12296 states and 16354 transitions. Second operand has 8 states, 8 states have (on average 19.25) internal successors, (154), 8 states have internal predecessors, (154), 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) [2023-12-21 14:11:56,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:11:56,501 INFO L93 Difference]: Finished difference Result 20332 states and 27178 transitions. [2023-12-21 14:11:56,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 14:11:56,502 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.25) internal successors, (154), 8 states have internal predecessors, (154), 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 154 [2023-12-21 14:11:56,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:11:56,525 INFO L225 Difference]: With dead ends: 20332 [2023-12-21 14:11:56,525 INFO L226 Difference]: Without dead ends: 18858 [2023-12-21 14:11:56,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2023-12-21 14:11:56,533 INFO L413 NwaCegarLoop]: 466 mSDtfsCounter, 1862 mSDsluCounter, 851 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1862 SdHoareTripleChecker+Valid, 1317 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:11:56,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1862 Valid, 1317 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:11:56,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18858 states. [2023-12-21 14:11:56,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18858 to 18832. [2023-12-21 14:11:56,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18832 states, 18831 states have (on average 1.3350326589134938) internal successors, (25140), 18831 states have internal predecessors, (25140), 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) [2023-12-21 14:11:56,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18832 states to 18832 states and 25140 transitions. [2023-12-21 14:11:56,782 INFO L78 Accepts]: Start accepts. Automaton has 18832 states and 25140 transitions. Word has length 154 [2023-12-21 14:11:56,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:11:56,782 INFO L495 AbstractCegarLoop]: Abstraction has 18832 states and 25140 transitions. [2023-12-21 14:11:56,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.25) internal successors, (154), 8 states have internal predecessors, (154), 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) [2023-12-21 14:11:56,782 INFO L276 IsEmpty]: Start isEmpty. Operand 18832 states and 25140 transitions. [2023-12-21 14:11:56,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-21 14:11:56,789 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:11:56,789 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:11:56,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-12-21 14:11:56,789 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:11:56,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:11:56,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1963786559, now seen corresponding path program 1 times [2023-12-21 14:11:56,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:11:56,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336148101] [2023-12-21 14:11:56,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:11:56,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:11:56,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:11:56,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:11:56,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:11:56,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336148101] [2023-12-21 14:11:56,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336148101] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:11:56,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:11:56,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:11:56,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592536308] [2023-12-21 14:11:56,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:11:56,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 14:11:56,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:11:56,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 14:11:56,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-21 14:11:56,957 INFO L87 Difference]: Start difference. First operand 18832 states and 25140 transitions. Second operand has 8 states, 8 states have (on average 19.25) internal successors, (154), 8 states have internal predecessors, (154), 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) [2023-12-21 14:11:57,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:11:57,170 INFO L93 Difference]: Finished difference Result 36976 states and 49638 transitions. [2023-12-21 14:11:57,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 14:11:57,170 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.25) internal successors, (154), 8 states have internal predecessors, (154), 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 154 [2023-12-21 14:11:57,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:11:57,205 INFO L225 Difference]: With dead ends: 36976 [2023-12-21 14:11:57,205 INFO L226 Difference]: Without dead ends: 29354 [2023-12-21 14:11:57,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2023-12-21 14:11:57,218 INFO L413 NwaCegarLoop]: 432 mSDtfsCounter, 1779 mSDsluCounter, 1128 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1779 SdHoareTripleChecker+Valid, 1560 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:11:57,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1779 Valid, 1560 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:11:57,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29354 states. [2023-12-21 14:11:57,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29354 to 29344. [2023-12-21 14:11:57,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29344 states, 29343 states have (on average 1.338445285076509) internal successors, (39274), 29343 states have internal predecessors, (39274), 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) [2023-12-21 14:11:57,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29344 states to 29344 states and 39274 transitions. [2023-12-21 14:11:57,557 INFO L78 Accepts]: Start accepts. Automaton has 29344 states and 39274 transitions. Word has length 154 [2023-12-21 14:11:57,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:11:57,557 INFO L495 AbstractCegarLoop]: Abstraction has 29344 states and 39274 transitions. [2023-12-21 14:11:57,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.25) internal successors, (154), 8 states have internal predecessors, (154), 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) [2023-12-21 14:11:57,557 INFO L276 IsEmpty]: Start isEmpty. Operand 29344 states and 39274 transitions. [2023-12-21 14:11:57,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-21 14:11:57,565 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:11:57,565 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:11:57,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-12-21 14:11:57,565 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:11:57,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:11:57,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1987881924, now seen corresponding path program 1 times [2023-12-21 14:11:57,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:11:57,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854171783] [2023-12-21 14:11:57,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:11:57,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:11:57,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:11:57,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:11:57,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:11:57,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854171783] [2023-12-21 14:11:57,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854171783] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:11:57,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:11:57,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:11:57,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478843051] [2023-12-21 14:11:57,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:11:57,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 14:11:57,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:11:57,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 14:11:57,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-21 14:11:57,737 INFO L87 Difference]: Start difference. First operand 29344 states and 39274 transitions. Second operand has 8 states, 8 states have (on average 19.25) internal successors, (154), 8 states have internal predecessors, (154), 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) [2023-12-21 14:11:58,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:11:58,017 INFO L93 Difference]: Finished difference Result 58352 states and 78288 transitions. [2023-12-21 14:11:58,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 14:11:58,017 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.25) internal successors, (154), 8 states have internal predecessors, (154), 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 154 [2023-12-21 14:11:58,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:11:58,072 INFO L225 Difference]: With dead ends: 58352 [2023-12-21 14:11:58,072 INFO L226 Difference]: Without dead ends: 40570 [2023-12-21 14:11:58,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2023-12-21 14:11:58,093 INFO L413 NwaCegarLoop]: 543 mSDtfsCounter, 1583 mSDsluCounter, 953 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1583 SdHoareTripleChecker+Valid, 1496 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:11:58,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1583 Valid, 1496 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:11:58,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40570 states. [2023-12-21 14:11:58,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40570 to 34908. [2023-12-21 14:11:58,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34908 states, 34907 states have (on average 1.341335548743805) internal successors, (46822), 34907 states have internal predecessors, (46822), 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) [2023-12-21 14:11:58,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34908 states to 34908 states and 46822 transitions. [2023-12-21 14:11:58,538 INFO L78 Accepts]: Start accepts. Automaton has 34908 states and 46822 transitions. Word has length 154 [2023-12-21 14:11:58,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:11:58,538 INFO L495 AbstractCegarLoop]: Abstraction has 34908 states and 46822 transitions. [2023-12-21 14:11:58,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.25) internal successors, (154), 8 states have internal predecessors, (154), 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) [2023-12-21 14:11:58,538 INFO L276 IsEmpty]: Start isEmpty. Operand 34908 states and 46822 transitions. [2023-12-21 14:11:58,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-21 14:11:58,546 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:11:58,547 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:11:58,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-12-21 14:11:58,547 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:11:58,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:11:58,547 INFO L85 PathProgramCache]: Analyzing trace with hash -921463007, now seen corresponding path program 1 times [2023-12-21 14:11:58,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:11:58,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792310770] [2023-12-21 14:11:58,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:11:58,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:11:58,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:11:58,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:11:58,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:11:58,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792310770] [2023-12-21 14:11:58,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792310770] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:11:58,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:11:58,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:11:58,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131174485] [2023-12-21 14:11:58,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:11:58,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 14:11:58,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:11:58,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 14:11:58,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-21 14:11:58,711 INFO L87 Difference]: Start difference. First operand 34908 states and 46822 transitions. Second operand has 8 states, 8 states have (on average 19.25) internal successors, (154), 8 states have internal predecessors, (154), 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) [2023-12-21 14:11:59,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:11:59,113 INFO L93 Difference]: Finished difference Result 72752 states and 98000 transitions. [2023-12-21 14:11:59,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 14:11:59,114 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.25) internal successors, (154), 8 states have internal predecessors, (154), 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 154 [2023-12-21 14:11:59,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:11:59,171 INFO L225 Difference]: With dead ends: 72752 [2023-12-21 14:11:59,172 INFO L226 Difference]: Without dead ends: 49342 [2023-12-21 14:11:59,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2023-12-21 14:11:59,194 INFO L413 NwaCegarLoop]: 551 mSDtfsCounter, 1510 mSDsluCounter, 1073 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1510 SdHoareTripleChecker+Valid, 1624 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:11:59,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1510 Valid, 1624 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:11:59,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49342 states. [2023-12-21 14:11:59,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49342 to 49332. [2023-12-21 14:11:59,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49332 states, 49331 states have (on average 1.3438608582838378) internal successors, (66294), 49331 states have internal predecessors, (66294), 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) [2023-12-21 14:11:59,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49332 states to 49332 states and 66294 transitions. [2023-12-21 14:11:59,806 INFO L78 Accepts]: Start accepts. Automaton has 49332 states and 66294 transitions. Word has length 154 [2023-12-21 14:11:59,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:11:59,806 INFO L495 AbstractCegarLoop]: Abstraction has 49332 states and 66294 transitions. [2023-12-21 14:11:59,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.25) internal successors, (154), 8 states have internal predecessors, (154), 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) [2023-12-21 14:11:59,807 INFO L276 IsEmpty]: Start isEmpty. Operand 49332 states and 66294 transitions. [2023-12-21 14:11:59,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-21 14:11:59,815 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:11:59,815 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:11:59,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-12-21 14:11:59,815 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:11:59,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:11:59,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1564647580, now seen corresponding path program 1 times [2023-12-21 14:11:59,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:11:59,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837960083] [2023-12-21 14:11:59,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:11:59,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:11:59,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:11:59,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:11:59,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:11:59,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837960083] [2023-12-21 14:11:59,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837960083] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:11:59,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:11:59,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:11:59,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211715542] [2023-12-21 14:11:59,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:11:59,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 14:11:59,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:11:59,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 14:11:59,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-21 14:11:59,990 INFO L87 Difference]: Start difference. First operand 49332 states and 66294 transitions. Second operand has 8 states, 8 states have (on average 19.25) internal successors, (154), 8 states have internal predecessors, (154), 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) [2023-12-21 14:12:00,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:12:00,358 INFO L93 Difference]: Finished difference Result 103136 states and 139074 transitions. [2023-12-21 14:12:00,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 14:12:00,363 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.25) internal successors, (154), 8 states have internal predecessors, (154), 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 154 [2023-12-21 14:12:00,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:12:00,670 INFO L225 Difference]: With dead ends: 103136 [2023-12-21 14:12:00,671 INFO L226 Difference]: Without dead ends: 65478 [2023-12-21 14:12:00,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2023-12-21 14:12:00,703 INFO L413 NwaCegarLoop]: 612 mSDtfsCounter, 1453 mSDsluCounter, 1203 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1453 SdHoareTripleChecker+Valid, 1815 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:12:00,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1453 Valid, 1815 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:12:00,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65478 states. [2023-12-21 14:12:01,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65478 to 65460. [2023-12-21 14:12:01,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65460 states, 65459 states have (on average 1.3462472692830627) internal successors, (88124), 65459 states have internal predecessors, (88124), 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) [2023-12-21 14:12:01,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65460 states to 65460 states and 88124 transitions. [2023-12-21 14:12:01,584 INFO L78 Accepts]: Start accepts. Automaton has 65460 states and 88124 transitions. Word has length 154 [2023-12-21 14:12:01,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:12:01,584 INFO L495 AbstractCegarLoop]: Abstraction has 65460 states and 88124 transitions. [2023-12-21 14:12:01,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.25) internal successors, (154), 8 states have internal predecessors, (154), 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) [2023-12-21 14:12:01,585 INFO L276 IsEmpty]: Start isEmpty. Operand 65460 states and 88124 transitions. [2023-12-21 14:12:01,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-21 14:12:01,595 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:12:01,595 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:12:01,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-12-21 14:12:01,595 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:12:01,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:12:01,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1391043044, now seen corresponding path program 1 times [2023-12-21 14:12:01,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:12:01,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80375438] [2023-12-21 14:12:01,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:12:01,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:12:01,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:12:01,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:12:01,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:12:01,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80375438] [2023-12-21 14:12:01,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80375438] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:12:01,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:12:01,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:12:01,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327935442] [2023-12-21 14:12:01,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:12:01,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 14:12:01,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:12:01,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 14:12:01,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-21 14:12:01,766 INFO L87 Difference]: Start difference. First operand 65460 states and 88124 transitions. Second operand has 8 states, 8 states have (on average 19.25) internal successors, (154), 8 states have internal predecessors, (154), 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) [2023-12-21 14:12:02,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:12:02,560 INFO L93 Difference]: Finished difference Result 155736 states and 210368 transitions. [2023-12-21 14:12:02,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 14:12:02,560 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.25) internal successors, (154), 8 states have internal predecessors, (154), 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 154 [2023-12-21 14:12:02,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:12:02,680 INFO L225 Difference]: With dead ends: 155736 [2023-12-21 14:12:02,681 INFO L226 Difference]: Without dead ends: 102174 [2023-12-21 14:12:02,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2023-12-21 14:12:02,709 INFO L413 NwaCegarLoop]: 424 mSDtfsCounter, 1732 mSDsluCounter, 1023 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1732 SdHoareTripleChecker+Valid, 1447 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:12:02,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1732 Valid, 1447 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:12:02,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102174 states. [2023-12-21 14:12:03,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102174 to 102164. [2023-12-21 14:12:03,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102164 states, 102163 states have (on average 1.3492751779019803) internal successors, (137846), 102163 states have internal predecessors, (137846), 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) [2023-12-21 14:12:04,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102164 states to 102164 states and 137846 transitions. [2023-12-21 14:12:04,059 INFO L78 Accepts]: Start accepts. Automaton has 102164 states and 137846 transitions. Word has length 154 [2023-12-21 14:12:04,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:12:04,059 INFO L495 AbstractCegarLoop]: Abstraction has 102164 states and 137846 transitions. [2023-12-21 14:12:04,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.25) internal successors, (154), 8 states have internal predecessors, (154), 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) [2023-12-21 14:12:04,059 INFO L276 IsEmpty]: Start isEmpty. Operand 102164 states and 137846 transitions. [2023-12-21 14:12:04,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-21 14:12:04,072 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:12:04,072 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:12:04,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-12-21 14:12:04,072 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:12:04,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:12:04,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1047744231, now seen corresponding path program 1 times [2023-12-21 14:12:04,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:12:04,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469641172] [2023-12-21 14:12:04,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:12:04,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:12:04,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:12:04,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:12:04,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:12:04,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469641172] [2023-12-21 14:12:04,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469641172] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:12:04,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:12:04,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:12:04,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765249973] [2023-12-21 14:12:04,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:12:04,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 14:12:04,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:12:04,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 14:12:04,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-21 14:12:04,242 INFO L87 Difference]: Start difference. First operand 102164 states and 137846 transitions. Second operand has 8 states, 8 states have (on average 19.25) internal successors, (154), 8 states have internal predecessors, (154), 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) [2023-12-21 14:12:05,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:12:05,150 INFO L93 Difference]: Finished difference Result 205548 states and 277688 transitions. [2023-12-21 14:12:05,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 14:12:05,151 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.25) internal successors, (154), 8 states have internal predecessors, (154), 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 154 [2023-12-21 14:12:05,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:12:05,292 INFO L225 Difference]: With dead ends: 205548 [2023-12-21 14:12:05,292 INFO L226 Difference]: Without dead ends: 115510 [2023-12-21 14:12:05,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2023-12-21 14:12:05,354 INFO L413 NwaCegarLoop]: 535 mSDtfsCounter, 1583 mSDsluCounter, 1027 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1583 SdHoareTripleChecker+Valid, 1562 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 14:12:05,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1583 Valid, 1562 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 14:12:05,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115510 states. [2023-12-21 14:12:06,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115510 to 110476. [2023-12-21 14:12:07,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110476 states, 110475 states have (on average 1.3498619597193935) internal successors, (149126), 110475 states have internal predecessors, (149126), 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) [2023-12-21 14:12:07,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110476 states to 110476 states and 149126 transitions. [2023-12-21 14:12:07,169 INFO L78 Accepts]: Start accepts. Automaton has 110476 states and 149126 transitions. Word has length 154 [2023-12-21 14:12:07,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:12:07,169 INFO L495 AbstractCegarLoop]: Abstraction has 110476 states and 149126 transitions. [2023-12-21 14:12:07,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.25) internal successors, (154), 8 states have internal predecessors, (154), 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) [2023-12-21 14:12:07,169 INFO L276 IsEmpty]: Start isEmpty. Operand 110476 states and 149126 transitions. [2023-12-21 14:12:07,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-21 14:12:07,180 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:12:07,180 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:12:07,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2023-12-21 14:12:07,181 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:12:07,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:12:07,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1861600700, now seen corresponding path program 1 times [2023-12-21 14:12:07,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:12:07,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105780964] [2023-12-21 14:12:07,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:12:07,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:12:07,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:12:07,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:12:07,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:12:07,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105780964] [2023-12-21 14:12:07,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105780964] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:12:07,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:12:07,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:12:07,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731475786] [2023-12-21 14:12:07,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:12:07,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 14:12:07,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:12:07,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 14:12:07,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-21 14:12:07,340 INFO L87 Difference]: Start difference. First operand 110476 states and 149126 transitions. Second operand has 8 states, 8 states have (on average 19.25) internal successors, (154), 8 states have internal predecessors, (154), 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) [2023-12-21 14:12:08,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:12:08,223 INFO L93 Difference]: Finished difference Result 227732 states and 307912 transitions. [2023-12-21 14:12:08,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 14:12:08,224 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.25) internal successors, (154), 8 states have internal predecessors, (154), 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 154 [2023-12-21 14:12:08,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:12:08,409 INFO L225 Difference]: With dead ends: 227732 [2023-12-21 14:12:08,410 INFO L226 Difference]: Without dead ends: 129206 [2023-12-21 14:12:08,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2023-12-21 14:12:08,475 INFO L413 NwaCegarLoop]: 543 mSDtfsCounter, 1518 mSDsluCounter, 1285 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1518 SdHoareTripleChecker+Valid, 1828 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:12:08,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1518 Valid, 1828 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:12:08,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129206 states. [2023-12-21 14:12:10,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129206 to 129196. [2023-12-21 14:12:10,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129196 states, 129195 states have (on average 1.3497581175742095) internal successors, (174382), 129195 states have internal predecessors, (174382), 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) [2023-12-21 14:12:10,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129196 states to 129196 states and 174382 transitions. [2023-12-21 14:12:10,444 INFO L78 Accepts]: Start accepts. Automaton has 129196 states and 174382 transitions. Word has length 154 [2023-12-21 14:12:10,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:12:10,445 INFO L495 AbstractCegarLoop]: Abstraction has 129196 states and 174382 transitions. [2023-12-21 14:12:10,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.25) internal successors, (154), 8 states have internal predecessors, (154), 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) [2023-12-21 14:12:10,445 INFO L276 IsEmpty]: Start isEmpty. Operand 129196 states and 174382 transitions. [2023-12-21 14:12:10,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-21 14:12:10,453 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:12:10,453 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:12:10,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2023-12-21 14:12:10,454 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:12:10,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:12:10,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1790182023, now seen corresponding path program 1 times [2023-12-21 14:12:10,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:12:10,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467782880] [2023-12-21 14:12:10,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:12:10,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:12:10,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:12:10,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:12:10,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:12:10,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467782880] [2023-12-21 14:12:10,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467782880] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:12:10,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:12:10,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:12:10,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459440573] [2023-12-21 14:12:10,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:12:10,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 14:12:10,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:12:10,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 14:12:10,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-21 14:12:10,620 INFO L87 Difference]: Start difference. First operand 129196 states and 174382 transitions. Second operand has 8 states, 8 states have (on average 19.25) internal successors, (154), 8 states have internal predecessors, (154), 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) [2023-12-21 14:12:11,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:12:11,665 INFO L93 Difference]: Finished difference Result 292012 states and 394858 transitions. [2023-12-21 14:12:11,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 14:12:11,667 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.25) internal successors, (154), 8 states have internal predecessors, (154), 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 154 [2023-12-21 14:12:11,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:12:11,905 INFO L225 Difference]: With dead ends: 292012 [2023-12-21 14:12:11,905 INFO L226 Difference]: Without dead ends: 174678 [2023-12-21 14:12:11,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2023-12-21 14:12:11,987 INFO L413 NwaCegarLoop]: 500 mSDtfsCounter, 1612 mSDsluCounter, 1022 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1612 SdHoareTripleChecker+Valid, 1522 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:12:11,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1612 Valid, 1522 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:12:12,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174678 states. [2023-12-21 14:12:14,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174678 to 174652. [2023-12-21 14:12:14,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174652 states, 174651 states have (on average 1.3511746282586414) internal successors, (235984), 174651 states have internal predecessors, (235984), 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) [2023-12-21 14:12:14,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174652 states to 174652 states and 235984 transitions. [2023-12-21 14:12:14,545 INFO L78 Accepts]: Start accepts. Automaton has 174652 states and 235984 transitions. Word has length 154 [2023-12-21 14:12:14,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:12:14,546 INFO L495 AbstractCegarLoop]: Abstraction has 174652 states and 235984 transitions. [2023-12-21 14:12:14,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.25) internal successors, (154), 8 states have internal predecessors, (154), 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) [2023-12-21 14:12:14,546 INFO L276 IsEmpty]: Start isEmpty. Operand 174652 states and 235984 transitions. [2023-12-21 14:12:14,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-21 14:12:14,556 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:12:14,556 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:12:14,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2023-12-21 14:12:14,557 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:12:14,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:12:14,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1189450656, now seen corresponding path program 1 times [2023-12-21 14:12:14,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:12:14,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119596496] [2023-12-21 14:12:14,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:12:14,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:12:14,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:12:14,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:12:14,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:12:14,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119596496] [2023-12-21 14:12:14,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119596496] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:12:14,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:12:14,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 14:12:14,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772646155] [2023-12-21 14:12:14,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:12:14,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 14:12:14,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:12:14,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 14:12:14,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 14:12:14,605 INFO L87 Difference]: Start difference. First operand 174652 states and 235984 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 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) [2023-12-21 14:12:16,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:12:16,306 INFO L93 Difference]: Finished difference Result 428072 states and 565634 transitions. [2023-12-21 14:12:16,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 14:12:16,307 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 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 154 [2023-12-21 14:12:16,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:12:16,684 INFO L225 Difference]: With dead ends: 428072 [2023-12-21 14:12:16,684 INFO L226 Difference]: Without dead ends: 256186 [2023-12-21 14:12:16,755 INFO L412 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 [2023-12-21 14:12:16,756 INFO L413 NwaCegarLoop]: 293 mSDtfsCounter, 55 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 14:12:16,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 528 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 14:12:16,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256186 states. [2023-12-21 14:12:19,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256186 to 247024. [2023-12-21 14:12:19,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247024 states, 247023 states have (on average 1.2810386077409797) internal successors, (316446), 247023 states have internal predecessors, (316446), 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) [2023-12-21 14:12:21,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247024 states to 247024 states and 316446 transitions. [2023-12-21 14:12:21,218 INFO L78 Accepts]: Start accepts. Automaton has 247024 states and 316446 transitions. Word has length 154 [2023-12-21 14:12:21,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:12:21,218 INFO L495 AbstractCegarLoop]: Abstraction has 247024 states and 316446 transitions. [2023-12-21 14:12:21,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 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) [2023-12-21 14:12:21,219 INFO L276 IsEmpty]: Start isEmpty. Operand 247024 states and 316446 transitions. [2023-12-21 14:12:21,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-21 14:12:21,233 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:12:21,233 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:12:21,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2023-12-21 14:12:21,233 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:12:21,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:12:21,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1793566672, now seen corresponding path program 1 times [2023-12-21 14:12:21,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:12:21,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71189885] [2023-12-21 14:12:21,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:12:21,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:12:21,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:12:21,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:12:21,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:12:21,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71189885] [2023-12-21 14:12:21,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71189885] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:12:21,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:12:21,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:12:21,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230165340] [2023-12-21 14:12:21,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:12:21,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 14:12:21,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:12:21,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 14:12:21,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-21 14:12:21,536 INFO L87 Difference]: Start difference. First operand 247024 states and 316446 transitions. Second operand has 8 states, 8 states have (on average 19.375) internal successors, (155), 8 states have internal predecessors, (155), 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) [2023-12-21 14:12:24,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:12:24,108 INFO L93 Difference]: Finished difference Result 528830 states and 678145 transitions. [2023-12-21 14:12:24,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 14:12:24,112 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.375) internal successors, (155), 8 states have internal predecessors, (155), 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 155 [2023-12-21 14:12:24,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:12:24,768 INFO L225 Difference]: With dead ends: 528830 [2023-12-21 14:12:24,768 INFO L226 Difference]: Without dead ends: 297864 [2023-12-21 14:12:24,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2023-12-21 14:12:24,903 INFO L413 NwaCegarLoop]: 455 mSDtfsCounter, 1651 mSDsluCounter, 1037 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1651 SdHoareTripleChecker+Valid, 1492 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 14:12:24,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1651 Valid, 1492 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 14:12:25,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297864 states. [2023-12-21 14:12:28,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297864 to 297854. [2023-12-21 14:12:28,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297854 states, 297853 states have (on average 1.2814744185890354) internal successors, (381691), 297853 states have internal predecessors, (381691), 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) [2023-12-21 14:12:29,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297854 states to 297854 states and 381691 transitions. [2023-12-21 14:12:29,733 INFO L78 Accepts]: Start accepts. Automaton has 297854 states and 381691 transitions. Word has length 155 [2023-12-21 14:12:29,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:12:29,734 INFO L495 AbstractCegarLoop]: Abstraction has 297854 states and 381691 transitions. [2023-12-21 14:12:29,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.375) internal successors, (155), 8 states have internal predecessors, (155), 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) [2023-12-21 14:12:29,734 INFO L276 IsEmpty]: Start isEmpty. Operand 297854 states and 381691 transitions. [2023-12-21 14:12:29,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-21 14:12:29,761 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:12:29,762 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:12:29,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2023-12-21 14:12:29,762 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:12:29,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:12:29,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1936797677, now seen corresponding path program 1 times [2023-12-21 14:12:29,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:12:29,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220354222] [2023-12-21 14:12:29,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:12:29,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:12:29,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:12:29,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:12:29,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:12:29,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220354222] [2023-12-21 14:12:29,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220354222] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:12:29,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:12:29,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:12:29,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085155584] [2023-12-21 14:12:29,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:12:29,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 14:12:29,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:12:29,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 14:12:29,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-21 14:12:29,922 INFO L87 Difference]: Start difference. First operand 297854 states and 381691 transitions. Second operand has 8 states, 8 states have (on average 19.375) internal successors, (155), 8 states have internal predecessors, (155), 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) [2023-12-21 14:12:32,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:12:32,198 INFO L93 Difference]: Finished difference Result 585870 states and 751491 transitions. [2023-12-21 14:12:32,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 14:12:32,199 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.375) internal successors, (155), 8 states have internal predecessors, (155), 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 155 [2023-12-21 14:12:32,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:12:32,727 INFO L225 Difference]: With dead ends: 585870 [2023-12-21 14:12:32,727 INFO L226 Difference]: Without dead ends: 304092 [2023-12-21 14:12:32,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2023-12-21 14:12:32,881 INFO L413 NwaCegarLoop]: 411 mSDtfsCounter, 1705 mSDsluCounter, 1032 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1705 SdHoareTripleChecker+Valid, 1443 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:12:32,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1705 Valid, 1443 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:12:33,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304092 states. [2023-12-21 14:12:36,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304092 to 293726. [2023-12-21 14:12:36,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293726 states, 293725 states have (on average 1.2815082134649758) internal successors, (376411), 293725 states have internal predecessors, (376411), 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) [2023-12-21 14:12:37,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293726 states to 293726 states and 376411 transitions. [2023-12-21 14:12:37,214 INFO L78 Accepts]: Start accepts. Automaton has 293726 states and 376411 transitions. Word has length 155 [2023-12-21 14:12:37,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:12:37,214 INFO L495 AbstractCegarLoop]: Abstraction has 293726 states and 376411 transitions. [2023-12-21 14:12:37,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.375) internal successors, (155), 8 states have internal predecessors, (155), 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) [2023-12-21 14:12:37,214 INFO L276 IsEmpty]: Start isEmpty. Operand 293726 states and 376411 transitions. [2023-12-21 14:12:37,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-21 14:12:37,224 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:12:37,224 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:12:37,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2023-12-21 14:12:37,224 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:12:37,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:12:37,224 INFO L85 PathProgramCache]: Analyzing trace with hash -115530934, now seen corresponding path program 1 times [2023-12-21 14:12:37,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:12:37,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183980737] [2023-12-21 14:12:37,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:12:37,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:12:37,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:12:37,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:12:37,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:12:37,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183980737] [2023-12-21 14:12:37,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183980737] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:12:37,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:12:37,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:12:37,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668184940] [2023-12-21 14:12:37,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:12:37,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 14:12:37,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:12:37,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 14:12:37,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-21 14:12:37,793 INFO L87 Difference]: Start difference. First operand 293726 states and 376411 transitions. Second operand has 8 states, 8 states have (on average 19.375) internal successors, (155), 8 states have internal predecessors, (155), 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) [2023-12-21 14:12:39,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:12:39,872 INFO L93 Difference]: Finished difference Result 599910 states and 769461 transitions. [2023-12-21 14:12:39,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 14:12:39,888 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.375) internal successors, (155), 8 states have internal predecessors, (155), 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 155 [2023-12-21 14:12:39,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:12:40,463 INFO L225 Difference]: With dead ends: 599910 [2023-12-21 14:12:40,463 INFO L226 Difference]: Without dead ends: 322172 [2023-12-21 14:12:40,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2023-12-21 14:12:40,617 INFO L413 NwaCegarLoop]: 470 mSDtfsCounter, 1658 mSDsluCounter, 1258 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1658 SdHoareTripleChecker+Valid, 1728 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:12:40,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1658 Valid, 1728 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:12:40,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322172 states. [2023-12-21 14:12:44,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322172 to 316510. [2023-12-21 14:12:45,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316510 states, 316509 states have (on average 1.2815528152438003) internal successors, (405623), 316509 states have internal predecessors, (405623), 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) [2023-12-21 14:12:46,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316510 states to 316510 states and 405623 transitions. [2023-12-21 14:12:46,123 INFO L78 Accepts]: Start accepts. Automaton has 316510 states and 405623 transitions. Word has length 155 [2023-12-21 14:12:46,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:12:46,123 INFO L495 AbstractCegarLoop]: Abstraction has 316510 states and 405623 transitions. [2023-12-21 14:12:46,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.375) internal successors, (155), 8 states have internal predecessors, (155), 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) [2023-12-21 14:12:46,124 INFO L276 IsEmpty]: Start isEmpty. Operand 316510 states and 405623 transitions. [2023-12-21 14:12:46,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-21 14:12:46,136 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:12:46,136 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:12:46,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2023-12-21 14:12:46,136 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:12:46,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:12:46,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1983253648, now seen corresponding path program 1 times [2023-12-21 14:12:46,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:12:46,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866958881] [2023-12-21 14:12:46,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:12:46,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:12:46,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:12:46,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:12:46,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:12:46,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866958881] [2023-12-21 14:12:46,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866958881] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:12:46,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:12:46,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:12:46,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522010071] [2023-12-21 14:12:46,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:12:46,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 14:12:46,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:12:46,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 14:12:46,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-21 14:12:46,877 INFO L87 Difference]: Start difference. First operand 316510 states and 405623 transitions. Second operand has 8 states, 8 states have (on average 19.375) internal successors, (155), 8 states have internal predecessors, (155), 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) [2023-12-21 14:12:49,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:12:49,467 INFO L93 Difference]: Finished difference Result 620742 states and 796185 transitions. [2023-12-21 14:12:49,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 14:12:49,468 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.375) internal successors, (155), 8 states have internal predecessors, (155), 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 155 [2023-12-21 14:12:49,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:12:50,009 INFO L225 Difference]: With dead ends: 620742 [2023-12-21 14:12:50,009 INFO L226 Difference]: Without dead ends: 320216 [2023-12-21 14:12:50,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2023-12-21 14:12:50,164 INFO L413 NwaCegarLoop]: 420 mSDtfsCounter, 1696 mSDsluCounter, 1215 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1696 SdHoareTripleChecker+Valid, 1635 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 14:12:50,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1696 Valid, 1635 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 14:12:50,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320216 states. [2023-12-21 14:12:53,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320216 to 320206. [2023-12-21 14:12:53,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320206 states, 320205 states have (on average 1.281863181399416) internal successors, (410459), 320205 states have internal predecessors, (410459), 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) [2023-12-21 14:12:54,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320206 states to 320206 states and 410459 transitions. [2023-12-21 14:12:54,785 INFO L78 Accepts]: Start accepts. Automaton has 320206 states and 410459 transitions. Word has length 155 [2023-12-21 14:12:54,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:12:54,785 INFO L495 AbstractCegarLoop]: Abstraction has 320206 states and 410459 transitions. [2023-12-21 14:12:54,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.375) internal successors, (155), 8 states have internal predecessors, (155), 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) [2023-12-21 14:12:54,786 INFO L276 IsEmpty]: Start isEmpty. Operand 320206 states and 410459 transitions. [2023-12-21 14:12:54,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-21 14:12:54,794 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:12:54,794 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:12:54,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2023-12-21 14:12:54,795 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:12:54,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:12:54,795 INFO L85 PathProgramCache]: Analyzing trace with hash 259385037, now seen corresponding path program 1 times [2023-12-21 14:12:54,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:12:54,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493127606] [2023-12-21 14:12:54,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:12:54,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:12:54,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:12:54,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:12:54,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:12:54,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493127606] [2023-12-21 14:12:54,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493127606] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:12:54,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:12:54,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:12:54,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247074093] [2023-12-21 14:12:54,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:12:54,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 14:12:54,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:12:54,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 14:12:54,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-21 14:12:54,941 INFO L87 Difference]: Start difference. First operand 320206 states and 410459 transitions. Second operand has 8 states, 8 states have (on average 19.375) internal successors, (155), 8 states have internal predecessors, (155), 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) [2023-12-21 14:12:57,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:12:57,214 INFO L93 Difference]: Finished difference Result 642102 states and 823833 transitions. [2023-12-21 14:12:57,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 14:12:57,215 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.375) internal successors, (155), 8 states have internal predecessors, (155), 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 155 [2023-12-21 14:12:57,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:12:57,791 INFO L225 Difference]: With dead ends: 642102 [2023-12-21 14:12:57,792 INFO L226 Difference]: Without dead ends: 337836 [2023-12-21 14:12:57,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2023-12-21 14:12:57,973 INFO L413 NwaCegarLoop]: 531 mSDtfsCounter, 1495 mSDsluCounter, 1105 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1495 SdHoareTripleChecker+Valid, 1636 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:12:57,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1495 Valid, 1636 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:12:58,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337836 states. [2023-12-21 14:13:01,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337836 to 330290. [2023-12-21 14:13:01,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330290 states, 330289 states have (on average 1.2818380266978313) internal successors, (423377), 330289 states have internal predecessors, (423377), 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) [2023-12-21 14:13:02,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330290 states to 330290 states and 423377 transitions. [2023-12-21 14:13:02,942 INFO L78 Accepts]: Start accepts. Automaton has 330290 states and 423377 transitions. Word has length 155 [2023-12-21 14:13:02,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:13:02,942 INFO L495 AbstractCegarLoop]: Abstraction has 330290 states and 423377 transitions. [2023-12-21 14:13:02,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.375) internal successors, (155), 8 states have internal predecessors, (155), 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) [2023-12-21 14:13:02,943 INFO L276 IsEmpty]: Start isEmpty. Operand 330290 states and 423377 transitions. [2023-12-21 14:13:02,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-21 14:13:02,951 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:13:02,951 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:13:02,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2023-12-21 14:13:02,951 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:13:02,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:13:02,951 INFO L85 PathProgramCache]: Analyzing trace with hash 264005392, now seen corresponding path program 1 times [2023-12-21 14:13:02,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:13:02,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377530098] [2023-12-21 14:13:02,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:13:02,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:13:02,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:13:03,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:13:03,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:13:03,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377530098] [2023-12-21 14:13:03,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377530098] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:13:03,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:13:03,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:13:03,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361641461] [2023-12-21 14:13:03,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:13:03,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 14:13:03,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:13:03,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 14:13:03,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-21 14:13:03,072 INFO L87 Difference]: Start difference. First operand 330290 states and 423377 transitions. Second operand has 8 states, 8 states have (on average 19.375) internal successors, (155), 8 states have internal predecessors, (155), 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) [2023-12-21 14:13:06,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:13:06,182 INFO L93 Difference]: Finished difference Result 722230 states and 926539 transitions. [2023-12-21 14:13:06,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 14:13:06,183 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.375) internal successors, (155), 8 states have internal predecessors, (155), 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 155 [2023-12-21 14:13:06,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:13:06,852 INFO L225 Difference]: With dead ends: 722230 [2023-12-21 14:13:06,853 INFO L226 Difference]: Without dead ends: 407792 [2023-12-21 14:13:07,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2023-12-21 14:13:07,000 INFO L413 NwaCegarLoop]: 539 mSDtfsCounter, 1490 mSDsluCounter, 1103 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1490 SdHoareTripleChecker+Valid, 1642 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:13:07,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1490 Valid, 1642 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:13:07,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407792 states. [2023-12-21 14:13:11,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407792 to 407782. [2023-12-21 14:13:11,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407782 states, 407781 states have (on average 1.2822103040602677) internal successors, (522861), 407781 states have internal predecessors, (522861), 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) [2023-12-21 14:13:12,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407782 states to 407782 states and 522861 transitions. [2023-12-21 14:13:12,947 INFO L78 Accepts]: Start accepts. Automaton has 407782 states and 522861 transitions. Word has length 155 [2023-12-21 14:13:12,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:13:12,947 INFO L495 AbstractCegarLoop]: Abstraction has 407782 states and 522861 transitions. [2023-12-21 14:13:12,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.375) internal successors, (155), 8 states have internal predecessors, (155), 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) [2023-12-21 14:13:12,947 INFO L276 IsEmpty]: Start isEmpty. Operand 407782 states and 522861 transitions. [2023-12-21 14:13:12,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-12-21 14:13:12,956 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:13:12,956 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:13:12,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2023-12-21 14:13:12,956 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:13:12,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:13:12,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1092567104, now seen corresponding path program 1 times [2023-12-21 14:13:12,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:13:12,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438887314] [2023-12-21 14:13:12,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:13:12,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:13:12,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:13:13,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:13:13,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:13:13,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438887314] [2023-12-21 14:13:13,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438887314] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:13:13,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:13:13,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:13:13,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283604566] [2023-12-21 14:13:13,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:13:13,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 14:13:13,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:13:13,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 14:13:13,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-21 14:13:13,120 INFO L87 Difference]: Start difference. First operand 407782 states and 522861 transitions. Second operand has 8 states, 8 states have (on average 19.5) internal successors, (156), 8 states have internal predecessors, (156), 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) [2023-12-21 14:13:16,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:13:16,331 INFO L93 Difference]: Finished difference Result 856870 states and 1099439 transitions. [2023-12-21 14:13:16,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 14:13:16,332 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.5) internal successors, (156), 8 states have internal predecessors, (156), 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 156 [2023-12-21 14:13:16,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:13:17,015 INFO L225 Difference]: With dead ends: 856870 [2023-12-21 14:13:17,015 INFO L226 Difference]: Without dead ends: 465008 [2023-12-21 14:13:17,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2023-12-21 14:13:17,126 INFO L413 NwaCegarLoop]: 662 mSDtfsCounter, 1265 mSDsluCounter, 1095 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1265 SdHoareTripleChecker+Valid, 1757 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:13:17,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1265 Valid, 1757 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:13:17,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465008 states. [2023-12-21 14:13:22,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465008 to 460602. [2023-12-21 14:13:22,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460602 states, 460601 states have (on average 1.2823050753254985) internal successors, (590631), 460601 states have internal predecessors, (590631), 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) [2023-12-21 14:13:23,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460602 states to 460602 states and 590631 transitions. [2023-12-21 14:13:23,944 INFO L78 Accepts]: Start accepts. Automaton has 460602 states and 590631 transitions. Word has length 156 [2023-12-21 14:13:23,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:13:23,944 INFO L495 AbstractCegarLoop]: Abstraction has 460602 states and 590631 transitions. [2023-12-21 14:13:23,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.5) internal successors, (156), 8 states have internal predecessors, (156), 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) [2023-12-21 14:13:23,944 INFO L276 IsEmpty]: Start isEmpty. Operand 460602 states and 590631 transitions. [2023-12-21 14:13:23,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-12-21 14:13:23,952 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:13:23,952 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:13:23,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2023-12-21 14:13:23,953 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:13:23,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:13:23,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1087946749, now seen corresponding path program 1 times [2023-12-21 14:13:23,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:13:23,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721630071] [2023-12-21 14:13:23,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:13:23,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:13:23,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:13:24,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:13:24,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:13:24,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721630071] [2023-12-21 14:13:24,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721630071] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:13:24,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:13:24,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:13:24,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012677061] [2023-12-21 14:13:24,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:13:24,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 14:13:24,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:13:24,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 14:13:24,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-21 14:13:24,093 INFO L87 Difference]: Start difference. First operand 460602 states and 590631 transitions. Second operand has 8 states, 8 states have (on average 19.5) internal successors, (156), 8 states have internal predecessors, (156), 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) [2023-12-21 14:13:28,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:13:28,042 INFO L93 Difference]: Finished difference Result 997106 states and 1279609 transitions. [2023-12-21 14:13:28,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 14:13:28,042 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.5) internal successors, (156), 8 states have internal predecessors, (156), 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 156 [2023-12-21 14:13:28,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:13:29,758 INFO L225 Difference]: With dead ends: 997106 [2023-12-21 14:13:29,758 INFO L226 Difference]: Without dead ends: 552288 [2023-12-21 14:13:30,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2023-12-21 14:13:30,009 INFO L413 NwaCegarLoop]: 715 mSDtfsCounter, 1193 mSDsluCounter, 922 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1193 SdHoareTripleChecker+Valid, 1637 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 14:13:30,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1193 Valid, 1637 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 14:13:30,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552288 states. [2023-12-21 14:13:35,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552288 to 551022. [2023-12-21 14:13:35,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551022 states, 551021 states have (on average 1.28275147408175) internal successors, (706823), 551021 states have internal predecessors, (706823), 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) [2023-12-21 14:13:37,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551022 states to 551022 states and 706823 transitions. [2023-12-21 14:13:37,953 INFO L78 Accepts]: Start accepts. Automaton has 551022 states and 706823 transitions. Word has length 156 [2023-12-21 14:13:37,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:13:37,954 INFO L495 AbstractCegarLoop]: Abstraction has 551022 states and 706823 transitions. [2023-12-21 14:13:37,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.5) internal successors, (156), 8 states have internal predecessors, (156), 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) [2023-12-21 14:13:37,954 INFO L276 IsEmpty]: Start isEmpty. Operand 551022 states and 706823 transitions. [2023-12-21 14:13:37,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-12-21 14:13:37,963 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:13:37,963 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:13:37,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2023-12-21 14:13:37,964 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:13:37,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:13:37,964 INFO L85 PathProgramCache]: Analyzing trace with hash 448167968, now seen corresponding path program 1 times [2023-12-21 14:13:37,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:13:37,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275954471] [2023-12-21 14:13:37,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:13:37,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:13:37,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:13:38,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:13:38,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:13:38,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275954471] [2023-12-21 14:13:38,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275954471] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:13:38,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:13:38,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:13:38,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556299154] [2023-12-21 14:13:38,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:13:38,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 14:13:38,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:13:38,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 14:13:38,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-21 14:13:38,107 INFO L87 Difference]: Start difference. First operand 551022 states and 706823 transitions. Second operand has 8 states, 8 states have (on average 19.5) internal successors, (156), 8 states have internal predecessors, (156), 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) [2023-12-21 14:13:41,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:13:41,822 INFO L93 Difference]: Finished difference Result 1130226 states and 1450493 transitions. [2023-12-21 14:13:41,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 14:13:41,823 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.5) internal successors, (156), 8 states have internal predecessors, (156), 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 156 [2023-12-21 14:13:41,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:13:43,133 INFO L225 Difference]: With dead ends: 1130226 [2023-12-21 14:13:43,134 INFO L226 Difference]: Without dead ends: 594920 [2023-12-21 14:13:43,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2023-12-21 14:13:43,403 INFO L413 NwaCegarLoop]: 672 mSDtfsCounter, 1246 mSDsluCounter, 1148 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1246 SdHoareTripleChecker+Valid, 1820 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:13:43,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1246 Valid, 1820 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:13:43,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594920 states. [2023-12-21 14:13:49,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594920 to 594902. [2023-12-21 14:13:50,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594902 states, 594901 states have (on average 1.282914300026391) internal successors, (763207), 594901 states have internal predecessors, (763207), 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) [2023-12-21 14:13:53,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594902 states to 594902 states and 763207 transitions. [2023-12-21 14:13:53,674 INFO L78 Accepts]: Start accepts. Automaton has 594902 states and 763207 transitions. Word has length 156 [2023-12-21 14:13:53,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:13:53,674 INFO L495 AbstractCegarLoop]: Abstraction has 594902 states and 763207 transitions. [2023-12-21 14:13:53,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.5) internal successors, (156), 8 states have internal predecessors, (156), 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) [2023-12-21 14:13:53,675 INFO L276 IsEmpty]: Start isEmpty. Operand 594902 states and 763207 transitions. [2023-12-21 14:13:53,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-12-21 14:13:53,683 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:13:53,684 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:13:53,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2023-12-21 14:13:53,684 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:13:53,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:13:53,684 INFO L85 PathProgramCache]: Analyzing trace with hash 877123424, now seen corresponding path program 1 times [2023-12-21 14:13:53,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:13:53,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229636693] [2023-12-21 14:13:53,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:13:53,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:13:53,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:13:53,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:13:53,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:13:53,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229636693] [2023-12-21 14:13:53,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229636693] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:13:53,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:13:53,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:13:53,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156617245] [2023-12-21 14:13:53,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:13:53,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 14:13:53,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:13:53,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 14:13:53,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-21 14:13:53,919 INFO L87 Difference]: Start difference. First operand 594902 states and 763207 transitions. Second operand has 8 states, 8 states have (on average 19.5) internal successors, (156), 8 states have internal predecessors, (156), 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) [2023-12-21 14:13:59,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:13:59,401 INFO L93 Difference]: Finished difference Result 1298902 states and 1667521 transitions. [2023-12-21 14:13:59,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 14:13:59,402 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.5) internal successors, (156), 8 states have internal predecessors, (156), 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 156 [2023-12-21 14:13:59,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:14:00,626 INFO L225 Difference]: With dead ends: 1298902 [2023-12-21 14:14:00,626 INFO L226 Difference]: Without dead ends: 719616 [2023-12-21 14:14:01,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2023-12-21 14:14:01,335 INFO L413 NwaCegarLoop]: 646 mSDtfsCounter, 1198 mSDsluCounter, 1035 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1198 SdHoareTripleChecker+Valid, 1681 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:14:01,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1198 Valid, 1681 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:14:01,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719616 states. [2023-12-21 14:14:11,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719616 to 711442. [2023-12-21 14:14:11,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 711442 states, 711441 states have (on average 1.2832054942012057) internal successors, (912925), 711441 states have internal predecessors, (912925), 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) [2023-12-21 14:14:14,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 711442 states to 711442 states and 912925 transitions. [2023-12-21 14:14:14,211 INFO L78 Accepts]: Start accepts. Automaton has 711442 states and 912925 transitions. Word has length 156 [2023-12-21 14:14:14,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:14:14,211 INFO L495 AbstractCegarLoop]: Abstraction has 711442 states and 912925 transitions. [2023-12-21 14:14:14,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.5) internal successors, (156), 8 states have internal predecessors, (156), 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) [2023-12-21 14:14:14,211 INFO L276 IsEmpty]: Start isEmpty. Operand 711442 states and 912925 transitions. [2023-12-21 14:14:14,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-12-21 14:14:14,218 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:14:14,218 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:14:14,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2023-12-21 14:14:14,218 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:14:14,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:14:14,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1252039395, now seen corresponding path program 1 times [2023-12-21 14:14:14,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:14:14,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289421893] [2023-12-21 14:14:14,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:14:14,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:14:14,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:14:14,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:14:14,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:14:14,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289421893] [2023-12-21 14:14:14,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289421893] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:14:14,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:14:14,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:14:14,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356101243] [2023-12-21 14:14:14,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:14:14,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 14:14:14,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:14:14,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 14:14:14,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-21 14:14:14,369 INFO L87 Difference]: Start difference. First operand 711442 states and 912925 transitions. Second operand has 8 states, 8 states have (on average 19.5) internal successors, (156), 8 states have internal predecessors, (156), 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) [2023-12-21 14:14:20,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:14:20,307 INFO L93 Difference]: Finished difference Result 1473510 states and 1891803 transitions. [2023-12-21 14:14:20,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 14:14:20,307 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.5) internal successors, (156), 8 states have internal predecessors, (156), 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 156 [2023-12-21 14:14:20,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:14:23,059 INFO L225 Difference]: With dead ends: 1473510 [2023-12-21 14:14:23,059 INFO L226 Difference]: Without dead ends: 777638 [2023-12-21 14:14:23,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2023-12-21 14:14:23,694 INFO L413 NwaCegarLoop]: 653 mSDtfsCounter, 1188 mSDsluCounter, 1506 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1188 SdHoareTripleChecker+Valid, 2159 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:14:23,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1188 Valid, 2159 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:14:24,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777638 states. [2023-12-21 14:14:32,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777638 to 772604. [2023-12-21 14:14:33,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 772604 states, 772603 states have (on average 1.283368042837007) internal successors, (991534), 772603 states have internal predecessors, (991534), 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) [2023-12-21 14:14:36,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772604 states to 772604 states and 991534 transitions. [2023-12-21 14:14:36,015 INFO L78 Accepts]: Start accepts. Automaton has 772604 states and 991534 transitions. Word has length 156 [2023-12-21 14:14:36,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:14:36,015 INFO L495 AbstractCegarLoop]: Abstraction has 772604 states and 991534 transitions. [2023-12-21 14:14:36,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.5) internal successors, (156), 8 states have internal predecessors, (156), 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) [2023-12-21 14:14:36,015 INFO L276 IsEmpty]: Start isEmpty. Operand 772604 states and 991534 transitions. [2023-12-21 14:14:36,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-12-21 14:14:36,024 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:14:36,024 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:14:36,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2023-12-21 14:14:36,024 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:14:36,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:14:36,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1256659750, now seen corresponding path program 1 times [2023-12-21 14:14:36,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:14:36,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740048836] [2023-12-21 14:14:36,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:14:36,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:14:36,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:14:36,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:14:36,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:14:36,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740048836] [2023-12-21 14:14:36,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740048836] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:14:36,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:14:36,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:14:36,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424647708] [2023-12-21 14:14:36,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:14:36,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 14:14:36,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:14:36,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 14:14:36,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-21 14:14:36,195 INFO L87 Difference]: Start difference. First operand 772604 states and 991534 transitions. Second operand has 8 states, 8 states have (on average 19.5) internal successors, (156), 8 states have internal predecessors, (156), 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) [2023-12-21 14:14:43,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 14:14:43,756 INFO L93 Difference]: Finished difference Result 1720840 states and 2209724 transitions. [2023-12-21 14:14:43,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 14:14:43,757 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.5) internal successors, (156), 8 states have internal predecessors, (156), 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 156 [2023-12-21 14:14:43,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 14:14:45,616 INFO L225 Difference]: With dead ends: 1720840 [2023-12-21 14:14:45,616 INFO L226 Difference]: Without dead ends: 963738 [2023-12-21 14:14:46,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2023-12-21 14:14:46,498 INFO L413 NwaCegarLoop]: 653 mSDtfsCounter, 1181 mSDsluCounter, 1092 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1181 SdHoareTripleChecker+Valid, 1745 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 14:14:46,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1181 Valid, 1745 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 14:14:47,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963738 states. [2023-12-21 14:14:57,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963738 to 963728. [2023-12-21 14:14:58,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963728 states, 963727 states have (on average 1.2836456797412545) internal successors, (1237084), 963727 states have internal predecessors, (1237084), 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) [2023-12-21 14:15:04,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963728 states to 963728 states and 1237084 transitions. [2023-12-21 14:15:04,483 INFO L78 Accepts]: Start accepts. Automaton has 963728 states and 1237084 transitions. Word has length 156 [2023-12-21 14:15:04,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 14:15:04,483 INFO L495 AbstractCegarLoop]: Abstraction has 963728 states and 1237084 transitions. [2023-12-21 14:15:04,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.5) internal successors, (156), 8 states have internal predecessors, (156), 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) [2023-12-21 14:15:04,483 INFO L276 IsEmpty]: Start isEmpty. Operand 963728 states and 1237084 transitions. [2023-12-21 14:15:04,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-12-21 14:15:04,496 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 14:15:04,496 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 14:15:04,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2023-12-21 14:15:04,496 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 14:15:04,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 14:15:04,497 INFO L85 PathProgramCache]: Analyzing trace with hash -652067389, now seen corresponding path program 1 times [2023-12-21 14:15:04,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 14:15:04,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843144035] [2023-12-21 14:15:04,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 14:15:04,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 14:15:04,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 14:15:04,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 14:15:04,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 14:15:04,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843144035] [2023-12-21 14:15:04,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843144035] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 14:15:04,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 14:15:04,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 14:15:04,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850329590] [2023-12-21 14:15:04,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 14:15:04,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 14:15:04,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 14:15:04,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 14:15:04,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-21 14:15:04,853 INFO L87 Difference]: Start difference. First operand 963728 states and 1237084 transitions. Second operand has 8 states, 8 states have (on average 19.5) internal successors, (156), 8 states have internal predecessors, (156), 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)