/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 true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/Problem05_label43+token_ring.15.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-18 22:17:47,646 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-18 22:17:47,719 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-18 22:17:47,723 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-18 22:17:47,724 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-18 22:17:47,746 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-18 22:17:47,746 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-18 22:17:47,747 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-18 22:17:47,747 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-18 22:17:47,750 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-18 22:17:47,750 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-18 22:17:47,751 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-18 22:17:47,751 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-18 22:17:47,752 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-18 22:17:47,752 INFO L153 SettingsManager]: * Use SBE=true [2023-12-18 22:17:47,752 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-18 22:17:47,753 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-18 22:17:47,753 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-18 22:17:47,753 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-18 22:17:47,754 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-18 22:17:47,754 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-18 22:17:47,754 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-18 22:17:47,754 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-18 22:17:47,755 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-18 22:17:47,755 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-18 22:17:47,755 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-18 22:17:47,755 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-18 22:17:47,755 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-18 22:17:47,756 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-18 22:17:47,756 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-18 22:17:47,757 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-18 22:17:47,757 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-18 22:17:47,757 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-18 22:17:47,757 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-18 22:17:47,757 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-18 22:17:47,757 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-18 22:17:47,757 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-18 22:17:47,758 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-18 22:17:47,758 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-18 22:17:47,758 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-18 22:17:47,758 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-18 22:17:47,758 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-18 22:17:47,758 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-18 22:17:47,758 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-18 22:17:47,986 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-18 22:17:48,016 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-18 22:17:48,018 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-18 22:17:48,019 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-18 22:17:48,020 INFO L274 PluginConnector]: CDTParser initialized [2023-12-18 22:17:48,021 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label43+token_ring.15.cil.c [2023-12-18 22:17:49,202 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-18 22:17:49,733 INFO L384 CDTParser]: Found 1 translation units. [2023-12-18 22:17:49,734 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label43+token_ring.15.cil.c [2023-12-18 22:17:49,782 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/468a7036e/b0892079e83943fab3cdd8a87ca9450b/FLAGbac4fb219 [2023-12-18 22:17:49,795 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/468a7036e/b0892079e83943fab3cdd8a87ca9450b [2023-12-18 22:17:49,797 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-18 22:17:49,798 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-18 22:17:49,800 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-18 22:17:49,800 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-18 22:17:49,804 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-18 22:17:49,804 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 10:17:49" (1/1) ... [2023-12-18 22:17:49,805 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a2156a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:17:49, skipping insertion in model container [2023-12-18 22:17:49,805 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 10:17:49" (1/1) ... [2023-12-18 22:17:49,983 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-18 22:17:51,219 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label43+token_ring.15.cil.c[381679,381692] [2023-12-18 22:17:51,249 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label43+token_ring.15.cil.c[383339,383352] [2023-12-18 22:17:51,515 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-18 22:17:51,526 INFO L202 MainTranslator]: Completed pre-run [2023-12-18 22:17:52,112 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label43+token_ring.15.cil.c[381679,381692] [2023-12-18 22:17:52,115 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label43+token_ring.15.cil.c[383339,383352] [2023-12-18 22:17:52,145 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-18 22:17:52,189 INFO L206 MainTranslator]: Completed translation [2023-12-18 22:17:52,190 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:17:52 WrapperNode [2023-12-18 22:17:52,190 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-18 22:17:52,191 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-18 22:17:52,191 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-18 22:17:52,191 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-18 22:17:52,196 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:17:52" (1/1) ... [2023-12-18 22:17:52,258 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:17:52" (1/1) ... [2023-12-18 22:17:52,714 INFO L138 Inliner]: procedures = 70, calls = 81, calls flagged for inlining = 47, calls inlined = 47, statements flattened = 13297 [2023-12-18 22:17:52,714 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-18 22:17:52,715 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-18 22:17:52,715 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-18 22:17:52,715 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-18 22:17:52,724 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:17:52" (1/1) ... [2023-12-18 22:17:52,724 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:17:52" (1/1) ... [2023-12-18 22:17:52,775 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:17:52" (1/1) ... [2023-12-18 22:17:52,924 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]. [2023-12-18 22:17:52,925 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:17:52" (1/1) ... [2023-12-18 22:17:52,925 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:17:52" (1/1) ... [2023-12-18 22:17:53,104 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:17:52" (1/1) ... [2023-12-18 22:17:53,133 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:17:52" (1/1) ... [2023-12-18 22:17:53,156 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:17:52" (1/1) ... [2023-12-18 22:17:53,174 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:17:52" (1/1) ... [2023-12-18 22:17:53,343 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-18 22:17:53,347 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-18 22:17:53,348 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-18 22:17:53,348 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-18 22:17:53,349 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:17:52" (1/1) ... [2023-12-18 22:17:53,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-18 22:17:53,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 22:17:53,371 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) [2023-12-18 22:17:53,408 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 [2023-12-18 22:17:53,424 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-18 22:17:53,424 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-12-18 22:17:53,424 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-12-18 22:17:53,425 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-18 22:17:53,425 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-18 22:17:53,425 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-12-18 22:17:53,425 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-12-18 22:17:53,425 INFO L130 BoogieDeclarations]: Found specification of procedure error [2023-12-18 22:17:53,425 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2023-12-18 22:17:53,426 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-12-18 22:17:53,426 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-12-18 22:17:53,426 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-12-18 22:17:53,426 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-12-18 22:17:53,426 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-12-18 22:17:53,426 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-12-18 22:17:53,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-18 22:17:53,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-18 22:17:53,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-18 22:17:53,554 INFO L241 CfgBuilder]: Building ICFG [2023-12-18 22:17:53,555 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-18 22:17:59,746 INFO L282 CfgBuilder]: Performing block encoding [2023-12-18 22:17:59,833 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-18 22:17:59,833 INFO L309 CfgBuilder]: Removed 17 assume(true) statements. [2023-12-18 22:17:59,834 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 10:17:59 BoogieIcfgContainer [2023-12-18 22:17:59,834 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-18 22:17:59,836 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-18 22:17:59,837 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-18 22:17:59,839 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-18 22:17:59,839 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 10:17:49" (1/3) ... [2023-12-18 22:17:59,840 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bf9dd86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 10:17:59, skipping insertion in model container [2023-12-18 22:17:59,840 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:17:52" (2/3) ... [2023-12-18 22:17:59,840 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bf9dd86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 10:17:59, skipping insertion in model container [2023-12-18 22:17:59,840 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 10:17:59" (3/3) ... [2023-12-18 22:17:59,841 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.15.cil.c [2023-12-18 22:17:59,852 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-18 22:17:59,853 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-18 22:17:59,927 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-18 22:17:59,932 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;@2dedb231, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-18 22:17:59,933 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-18 22:17:59,945 INFO L276 IsEmpty]: Start isEmpty. Operand has 2500 states, 2461 states have (on average 1.8748476229175133) internal successors, (4614), 2466 states have internal predecessors, (4614), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2023-12-18 22:17:59,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-18 22:17:59,966 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:17:59,967 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:17:59,968 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:17:59,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:17:59,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1330018896, now seen corresponding path program 1 times [2023-12-18 22:17:59,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:17:59,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782094300] [2023-12-18 22:17:59,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:17:59,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:18:00,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:00,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:18:00,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:00,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-18 22:18:00,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:00,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-18 22:18:00,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:00,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-18 22:18:00,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:00,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-18 22:18:00,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:00,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:18:00,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:18:00,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782094300] [2023-12-18 22:18:00,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782094300] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:18:00,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:18:00,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-18 22:18:00,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613368114] [2023-12-18 22:18:00,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:18:00,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-18 22:18:00,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:18:00,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-18 22:18:00,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-18 22:18:00,539 INFO L87 Difference]: Start difference. First operand has 2500 states, 2461 states have (on average 1.8748476229175133) internal successors, (4614), 2466 states have internal predecessors, (4614), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:18:02,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:18:02,490 INFO L93 Difference]: Finished difference Result 5133 states and 9582 transitions. [2023-12-18 22:18:02,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-18 22:18:02,493 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2023-12-18 22:18:02,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:18:02,518 INFO L225 Difference]: With dead ends: 5133 [2023-12-18 22:18:02,519 INFO L226 Difference]: Without dead ends: 2635 [2023-12-18 22:18:02,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-18 22:18:02,529 INFO L413 NwaCegarLoop]: 4283 mSDtfsCounter, 1058 mSDsluCounter, 12236 mSDsCounter, 0 mSdLazyCounter, 1149 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1083 SdHoareTripleChecker+Valid, 16519 SdHoareTripleChecker+Invalid, 1211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-18 22:18:02,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1083 Valid, 16519 Invalid, 1211 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [62 Valid, 1149 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-18 22:18:02,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2635 states. [2023-12-18 22:18:02,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2635 to 2495. [2023-12-18 22:18:02,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2495 states, 2458 states have (on average 1.8356387306753459) internal successors, (4512), 2461 states have internal predecessors, (4512), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-18 22:18:02,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2495 states to 2495 states and 4568 transitions. [2023-12-18 22:18:02,620 INFO L78 Accepts]: Start accepts. Automaton has 2495 states and 4568 transitions. Word has length 172 [2023-12-18 22:18:02,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:18:02,620 INFO L495 AbstractCegarLoop]: Abstraction has 2495 states and 4568 transitions. [2023-12-18 22:18:02,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:18:02,621 INFO L276 IsEmpty]: Start isEmpty. Operand 2495 states and 4568 transitions. [2023-12-18 22:18:02,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-18 22:18:02,623 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:18:02,623 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:18:02,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-18 22:18:02,624 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:18:02,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:18:02,624 INFO L85 PathProgramCache]: Analyzing trace with hash 831462094, now seen corresponding path program 1 times [2023-12-18 22:18:02,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:18:02,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924119875] [2023-12-18 22:18:02,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:18:02,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:18:02,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:02,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:18:02,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:02,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-18 22:18:02,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:02,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-18 22:18:02,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:02,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-18 22:18:02,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:02,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-18 22:18:02,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:02,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:18:02,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:18:02,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924119875] [2023-12-18 22:18:02,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924119875] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:18:02,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:18:02,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-18 22:18:02,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196569352] [2023-12-18 22:18:02,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:18:02,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-18 22:18:02,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:18:02,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-18 22:18:02,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-18 22:18:02,836 INFO L87 Difference]: Start difference. First operand 2495 states and 4568 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:18:04,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:18:04,989 INFO L93 Difference]: Finished difference Result 2994 states and 5402 transitions. [2023-12-18 22:18:04,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-18 22:18:04,992 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2023-12-18 22:18:04,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:18:05,006 INFO L225 Difference]: With dead ends: 2994 [2023-12-18 22:18:05,006 INFO L226 Difference]: Without dead ends: 2635 [2023-12-18 22:18:05,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-18 22:18:05,011 INFO L413 NwaCegarLoop]: 4279 mSDtfsCounter, 1046 mSDsluCounter, 12227 mSDsCounter, 0 mSdLazyCounter, 1138 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1071 SdHoareTripleChecker+Valid, 16506 SdHoareTripleChecker+Invalid, 1200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-18 22:18:05,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1071 Valid, 16506 Invalid, 1200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1138 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-18 22:18:05,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2635 states. [2023-12-18 22:18:05,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2635 to 2495. [2023-12-18 22:18:05,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2495 states, 2458 states have (on average 1.8352318958502847) internal successors, (4511), 2461 states have internal predecessors, (4511), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-18 22:18:05,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2495 states to 2495 states and 4567 transitions. [2023-12-18 22:18:05,089 INFO L78 Accepts]: Start accepts. Automaton has 2495 states and 4567 transitions. Word has length 172 [2023-12-18 22:18:05,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:18:05,090 INFO L495 AbstractCegarLoop]: Abstraction has 2495 states and 4567 transitions. [2023-12-18 22:18:05,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:18:05,090 INFO L276 IsEmpty]: Start isEmpty. Operand 2495 states and 4567 transitions. [2023-12-18 22:18:05,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-18 22:18:05,092 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:18:05,092 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:18:05,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-18 22:18:05,093 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:18:05,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:18:05,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1694033588, now seen corresponding path program 1 times [2023-12-18 22:18:05,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:18:05,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774116215] [2023-12-18 22:18:05,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:18:05,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:18:05,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:05,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:18:05,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:05,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-18 22:18:05,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:05,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-18 22:18:05,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:05,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-18 22:18:05,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:05,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-18 22:18:05,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:05,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:18:05,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:18:05,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774116215] [2023-12-18 22:18:05,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774116215] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:18:05,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:18:05,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-18 22:18:05,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166595035] [2023-12-18 22:18:05,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:18:05,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-18 22:18:05,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:18:05,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-18 22:18:05,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-18 22:18:05,352 INFO L87 Difference]: Start difference. First operand 2495 states and 4567 transitions. Second operand has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:18:08,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:18:08,370 INFO L93 Difference]: Finished difference Result 3506 states and 6263 transitions. [2023-12-18 22:18:08,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-18 22:18:08,371 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2023-12-18 22:18:08,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:18:08,384 INFO L225 Difference]: With dead ends: 3506 [2023-12-18 22:18:08,384 INFO L226 Difference]: Without dead ends: 3151 [2023-12-18 22:18:08,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-18 22:18:08,389 INFO L413 NwaCegarLoop]: 4245 mSDtfsCounter, 5554 mSDsluCounter, 12730 mSDsCounter, 0 mSdLazyCounter, 2471 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5574 SdHoareTripleChecker+Valid, 16975 SdHoareTripleChecker+Invalid, 2591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 2471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-18 22:18:08,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5574 Valid, 16975 Invalid, 2591 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [120 Valid, 2471 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-18 22:18:08,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3151 states. [2023-12-18 22:18:08,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3151 to 2870. [2023-12-18 22:18:08,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2870 states, 2804 states have (on average 1.8131241084165477) internal successors, (5084), 2808 states have internal predecessors, (5084), 51 states have call successors, (51), 13 states have call predecessors, (51), 13 states have return successors, (52), 49 states have call predecessors, (52), 49 states have call successors, (52) [2023-12-18 22:18:08,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2870 states to 2870 states and 5187 transitions. [2023-12-18 22:18:08,476 INFO L78 Accepts]: Start accepts. Automaton has 2870 states and 5187 transitions. Word has length 172 [2023-12-18 22:18:08,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:18:08,477 INFO L495 AbstractCegarLoop]: Abstraction has 2870 states and 5187 transitions. [2023-12-18 22:18:08,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:18:08,477 INFO L276 IsEmpty]: Start isEmpty. Operand 2870 states and 5187 transitions. [2023-12-18 22:18:08,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-18 22:18:08,480 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:18:08,480 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:18:08,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-18 22:18:08,480 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:18:08,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:18:08,481 INFO L85 PathProgramCache]: Analyzing trace with hash -688928312, now seen corresponding path program 1 times [2023-12-18 22:18:08,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:18:08,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061247349] [2023-12-18 22:18:08,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:18:08,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:18:08,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:08,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:18:08,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:08,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-18 22:18:08,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:08,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-18 22:18:08,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:08,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-18 22:18:08,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:08,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-18 22:18:08,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:08,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:18:08,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:18:08,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061247349] [2023-12-18 22:18:08,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061247349] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:18:08,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:18:08,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:18:08,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201642390] [2023-12-18 22:18:08,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:18:08,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:18:08,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:18:08,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:18:08,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:18:08,810 INFO L87 Difference]: Start difference. First operand 2870 states and 5187 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:18:13,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:18:13,425 INFO L93 Difference]: Finished difference Result 4417 states and 7785 transitions. [2023-12-18 22:18:13,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-18 22:18:13,426 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2023-12-18 22:18:13,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:18:13,439 INFO L225 Difference]: With dead ends: 4417 [2023-12-18 22:18:13,439 INFO L226 Difference]: Without dead ends: 3687 [2023-12-18 22:18:13,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-18 22:18:13,448 INFO L413 NwaCegarLoop]: 4463 mSDtfsCounter, 5601 mSDsluCounter, 17510 mSDsCounter, 0 mSdLazyCounter, 4012 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5621 SdHoareTripleChecker+Valid, 21973 SdHoareTripleChecker+Invalid, 4079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 4012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-18 22:18:13,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5621 Valid, 21973 Invalid, 4079 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [67 Valid, 4012 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-18 22:18:13,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3687 states. [2023-12-18 22:18:13,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3687 to 3216. [2023-12-18 22:18:13,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3216 states, 3121 states have (on average 1.793976289650753) internal successors, (5599), 3126 states have internal predecessors, (5599), 73 states have call successors, (73), 19 states have call predecessors, (73), 20 states have return successors, (76), 72 states have call predecessors, (76), 71 states have call successors, (76) [2023-12-18 22:18:13,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3216 states to 3216 states and 5748 transitions. [2023-12-18 22:18:13,573 INFO L78 Accepts]: Start accepts. Automaton has 3216 states and 5748 transitions. Word has length 172 [2023-12-18 22:18:13,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:18:13,574 INFO L495 AbstractCegarLoop]: Abstraction has 3216 states and 5748 transitions. [2023-12-18 22:18:13,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:18:13,574 INFO L276 IsEmpty]: Start isEmpty. Operand 3216 states and 5748 transitions. [2023-12-18 22:18:13,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-18 22:18:13,576 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:18:13,577 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:18:13,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-18 22:18:13,577 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:18:13,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:18:13,578 INFO L85 PathProgramCache]: Analyzing trace with hash -303065910, now seen corresponding path program 1 times [2023-12-18 22:18:13,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:18:13,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733761213] [2023-12-18 22:18:13,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:18:13,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:18:13,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:13,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:18:13,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:13,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-18 22:18:13,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:13,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-18 22:18:13,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:13,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-18 22:18:13,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:13,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-18 22:18:13,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:13,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:18:13,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:18:13,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733761213] [2023-12-18 22:18:13,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733761213] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:18:13,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:18:13,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:18:13,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25883859] [2023-12-18 22:18:13,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:18:13,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:18:13,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:18:13,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:18:13,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:18:13,931 INFO L87 Difference]: Start difference. First operand 3216 states and 5748 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:18:16,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:18:16,001 INFO L93 Difference]: Finished difference Result 4781 states and 8390 transitions. [2023-12-18 22:18:16,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-18 22:18:16,002 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2023-12-18 22:18:16,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:18:16,018 INFO L225 Difference]: With dead ends: 4781 [2023-12-18 22:18:16,018 INFO L226 Difference]: Without dead ends: 3705 [2023-12-18 22:18:16,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-18 22:18:16,023 INFO L413 NwaCegarLoop]: 4232 mSDtfsCounter, 5289 mSDsluCounter, 12540 mSDsCounter, 0 mSdLazyCounter, 1851 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5310 SdHoareTripleChecker+Valid, 16772 SdHoareTripleChecker+Invalid, 1951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-18 22:18:16,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5310 Valid, 16772 Invalid, 1951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1851 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-18 22:18:16,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3705 states. [2023-12-18 22:18:16,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3705 to 3216. [2023-12-18 22:18:16,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3216 states, 3121 states have (on average 1.7930150592758731) internal successors, (5596), 3126 states have internal predecessors, (5596), 73 states have call successors, (73), 19 states have call predecessors, (73), 20 states have return successors, (76), 72 states have call predecessors, (76), 71 states have call successors, (76) [2023-12-18 22:18:16,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3216 states to 3216 states and 5745 transitions. [2023-12-18 22:18:16,103 INFO L78 Accepts]: Start accepts. Automaton has 3216 states and 5745 transitions. Word has length 172 [2023-12-18 22:18:16,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:18:16,104 INFO L495 AbstractCegarLoop]: Abstraction has 3216 states and 5745 transitions. [2023-12-18 22:18:16,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:18:16,105 INFO L276 IsEmpty]: Start isEmpty. Operand 3216 states and 5745 transitions. [2023-12-18 22:18:16,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-18 22:18:16,106 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:18:16,107 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:18:16,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-18 22:18:16,107 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:18:16,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:18:16,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1628059724, now seen corresponding path program 1 times [2023-12-18 22:18:16,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:18:16,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093878610] [2023-12-18 22:18:16,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:18:16,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:18:16,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:16,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:18:16,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:16,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-18 22:18:16,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:16,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-18 22:18:16,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:16,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-18 22:18:16,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:16,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-18 22:18:16,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:16,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:18:16,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:18:16,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093878610] [2023-12-18 22:18:16,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093878610] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:18:16,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:18:16,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:18:16,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25461188] [2023-12-18 22:18:16,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:18:16,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:18:16,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:18:16,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:18:16,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:18:16,338 INFO L87 Difference]: Start difference. First operand 3216 states and 5745 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:18:18,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:18:18,049 INFO L93 Difference]: Finished difference Result 4777 states and 8373 transitions. [2023-12-18 22:18:18,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-18 22:18:18,049 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2023-12-18 22:18:18,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:18:18,062 INFO L225 Difference]: With dead ends: 4777 [2023-12-18 22:18:18,062 INFO L226 Difference]: Without dead ends: 3701 [2023-12-18 22:18:18,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-18 22:18:18,068 INFO L413 NwaCegarLoop]: 4232 mSDtfsCounter, 5123 mSDsluCounter, 16675 mSDsCounter, 0 mSdLazyCounter, 2035 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5144 SdHoareTripleChecker+Valid, 20907 SdHoareTripleChecker+Invalid, 2106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 2035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-18 22:18:18,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5144 Valid, 20907 Invalid, 2106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 2035 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-18 22:18:18,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3701 states. [2023-12-18 22:18:18,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3701 to 3216. [2023-12-18 22:18:18,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3216 states, 3121 states have (on average 1.7920538289009933) internal successors, (5593), 3126 states have internal predecessors, (5593), 73 states have call successors, (73), 19 states have call predecessors, (73), 20 states have return successors, (76), 72 states have call predecessors, (76), 71 states have call successors, (76) [2023-12-18 22:18:18,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3216 states to 3216 states and 5742 transitions. [2023-12-18 22:18:18,291 INFO L78 Accepts]: Start accepts. Automaton has 3216 states and 5742 transitions. Word has length 172 [2023-12-18 22:18:18,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:18:18,291 INFO L495 AbstractCegarLoop]: Abstraction has 3216 states and 5742 transitions. [2023-12-18 22:18:18,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:18:18,292 INFO L276 IsEmpty]: Start isEmpty. Operand 3216 states and 5742 transitions. [2023-12-18 22:18:18,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-18 22:18:18,294 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:18:18,295 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:18:18,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-18 22:18:18,295 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:18:18,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:18:18,296 INFO L85 PathProgramCache]: Analyzing trace with hash 304880778, now seen corresponding path program 1 times [2023-12-18 22:18:18,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:18:18,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631653689] [2023-12-18 22:18:18,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:18:18,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:18:18,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:18,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:18:18,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:18,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-18 22:18:18,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:18,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-18 22:18:18,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:18,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-18 22:18:18,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:18,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-18 22:18:18,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:18,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:18:18,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:18:18,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631653689] [2023-12-18 22:18:18,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631653689] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:18:18,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:18:18,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:18:18,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179243021] [2023-12-18 22:18:18,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:18:18,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:18:18,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:18:18,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:18:18,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:18:18,541 INFO L87 Difference]: Start difference. First operand 3216 states and 5742 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:18:20,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:18:20,238 INFO L93 Difference]: Finished difference Result 4773 states and 8356 transitions. [2023-12-18 22:18:20,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-18 22:18:20,239 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2023-12-18 22:18:20,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:18:20,263 INFO L225 Difference]: With dead ends: 4773 [2023-12-18 22:18:20,263 INFO L226 Difference]: Without dead ends: 3697 [2023-12-18 22:18:20,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-18 22:18:20,269 INFO L413 NwaCegarLoop]: 4232 mSDtfsCounter, 5121 mSDsluCounter, 16675 mSDsCounter, 0 mSdLazyCounter, 2019 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5142 SdHoareTripleChecker+Valid, 20907 SdHoareTripleChecker+Invalid, 2090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 2019 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-18 22:18:20,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5142 Valid, 20907 Invalid, 2090 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [71 Valid, 2019 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-18 22:18:20,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3697 states. [2023-12-18 22:18:20,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3697 to 3216. [2023-12-18 22:18:20,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3216 states, 3121 states have (on average 1.7910925985261135) internal successors, (5590), 3126 states have internal predecessors, (5590), 73 states have call successors, (73), 19 states have call predecessors, (73), 20 states have return successors, (76), 72 states have call predecessors, (76), 71 states have call successors, (76) [2023-12-18 22:18:20,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3216 states to 3216 states and 5739 transitions. [2023-12-18 22:18:20,359 INFO L78 Accepts]: Start accepts. Automaton has 3216 states and 5739 transitions. Word has length 172 [2023-12-18 22:18:20,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:18:20,359 INFO L495 AbstractCegarLoop]: Abstraction has 3216 states and 5739 transitions. [2023-12-18 22:18:20,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:18:20,359 INFO L276 IsEmpty]: Start isEmpty. Operand 3216 states and 5739 transitions. [2023-12-18 22:18:20,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-18 22:18:20,361 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:18:20,361 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:18:20,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-18 22:18:20,361 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:18:20,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:18:20,362 INFO L85 PathProgramCache]: Analyzing trace with hash -2093107060, now seen corresponding path program 1 times [2023-12-18 22:18:20,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:18:20,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067691064] [2023-12-18 22:18:20,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:18:20,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:18:20,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:20,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:18:20,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:20,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-18 22:18:20,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:20,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-18 22:18:20,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:20,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-18 22:18:20,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:20,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-18 22:18:20,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:20,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:18:20,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:18:20,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067691064] [2023-12-18 22:18:20,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067691064] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:18:20,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:18:20,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:18:20,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590694652] [2023-12-18 22:18:20,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:18:20,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:18:20,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:18:20,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:18:20,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:18:20,616 INFO L87 Difference]: Start difference. First operand 3216 states and 5739 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:18:24,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:18:24,010 INFO L93 Difference]: Finished difference Result 5739 states and 9934 transitions. [2023-12-18 22:18:24,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-18 22:18:24,010 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2023-12-18 22:18:24,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:18:24,033 INFO L225 Difference]: With dead ends: 5739 [2023-12-18 22:18:24,033 INFO L226 Difference]: Without dead ends: 4663 [2023-12-18 22:18:24,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-18 22:18:24,041 INFO L413 NwaCegarLoop]: 4254 mSDtfsCounter, 5686 mSDsluCounter, 16947 mSDsCounter, 0 mSdLazyCounter, 3263 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5706 SdHoareTripleChecker+Valid, 21201 SdHoareTripleChecker+Invalid, 3374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 3263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-18 22:18:24,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5706 Valid, 21201 Invalid, 3374 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [111 Valid, 3263 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-18 22:18:24,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4663 states. [2023-12-18 22:18:24,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4663 to 3921. [2023-12-18 22:18:24,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3921 states, 3768 states have (on average 1.7603503184713376) internal successors, (6633), 3775 states have internal predecessors, (6633), 117 states have call successors, (117), 31 states have call predecessors, (117), 34 states have return successors, (128), 118 states have call predecessors, (128), 115 states have call successors, (128) [2023-12-18 22:18:24,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3921 states to 3921 states and 6878 transitions. [2023-12-18 22:18:24,149 INFO L78 Accepts]: Start accepts. Automaton has 3921 states and 6878 transitions. Word has length 172 [2023-12-18 22:18:24,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:18:24,150 INFO L495 AbstractCegarLoop]: Abstraction has 3921 states and 6878 transitions. [2023-12-18 22:18:24,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:18:24,150 INFO L276 IsEmpty]: Start isEmpty. Operand 3921 states and 6878 transitions. [2023-12-18 22:18:24,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-18 22:18:24,152 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:18:24,153 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:18:24,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-18 22:18:24,153 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:18:24,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:18:24,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1754819510, now seen corresponding path program 1 times [2023-12-18 22:18:24,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:18:24,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538837836] [2023-12-18 22:18:24,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:18:24,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:18:24,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:24,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:18:24,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:24,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-18 22:18:24,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:24,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-18 22:18:24,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:24,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-18 22:18:24,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:24,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-18 22:18:24,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:24,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:18:24,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:18:24,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538837836] [2023-12-18 22:18:24,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538837836] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:18:24,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:18:24,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:18:24,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291279670] [2023-12-18 22:18:24,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:18:24,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:18:24,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:18:24,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:18:24,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:18:24,389 INFO L87 Difference]: Start difference. First operand 3921 states and 6878 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:18:26,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:18:26,445 INFO L93 Difference]: Finished difference Result 6429 states and 11059 transitions. [2023-12-18 22:18:26,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-18 22:18:26,445 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2023-12-18 22:18:26,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:18:26,455 INFO L225 Difference]: With dead ends: 6429 [2023-12-18 22:18:26,456 INFO L226 Difference]: Without dead ends: 4648 [2023-12-18 22:18:26,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-18 22:18:26,462 INFO L413 NwaCegarLoop]: 4232 mSDtfsCounter, 5120 mSDsluCounter, 16675 mSDsCounter, 0 mSdLazyCounter, 1993 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5141 SdHoareTripleChecker+Valid, 20907 SdHoareTripleChecker+Invalid, 2064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1993 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-18 22:18:26,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5141 Valid, 20907 Invalid, 2064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1993 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-18 22:18:26,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4648 states. [2023-12-18 22:18:26,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4648 to 3921. [2023-12-18 22:18:26,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3921 states, 3768 states have (on average 1.7590233545647558) internal successors, (6628), 3775 states have internal predecessors, (6628), 117 states have call successors, (117), 31 states have call predecessors, (117), 34 states have return successors, (128), 118 states have call predecessors, (128), 115 states have call successors, (128) [2023-12-18 22:18:26,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3921 states to 3921 states and 6873 transitions. [2023-12-18 22:18:26,557 INFO L78 Accepts]: Start accepts. Automaton has 3921 states and 6873 transitions. Word has length 172 [2023-12-18 22:18:26,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:18:26,558 INFO L495 AbstractCegarLoop]: Abstraction has 3921 states and 6873 transitions. [2023-12-18 22:18:26,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:18:26,558 INFO L276 IsEmpty]: Start isEmpty. Operand 3921 states and 6873 transitions. [2023-12-18 22:18:26,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-18 22:18:26,560 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:18:26,560 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:18:26,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-18 22:18:26,560 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:18:26,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:18:26,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1328265012, now seen corresponding path program 1 times [2023-12-18 22:18:26,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:18:26,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962177977] [2023-12-18 22:18:26,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:18:26,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:18:26,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:26,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:18:26,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:26,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-18 22:18:26,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:26,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-18 22:18:26,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:26,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-18 22:18:26,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:26,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-18 22:18:26,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:26,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:18:26,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:18:26,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962177977] [2023-12-18 22:18:26,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962177977] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:18:26,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:18:26,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:18:26,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93260158] [2023-12-18 22:18:26,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:18:26,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:18:26,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:18:26,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:18:26,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:18:26,809 INFO L87 Difference]: Start difference. First operand 3921 states and 6873 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:18:30,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:18:30,531 INFO L93 Difference]: Finished difference Result 8298 states and 14097 transitions. [2023-12-18 22:18:30,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-18 22:18:30,532 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2023-12-18 22:18:30,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:18:30,546 INFO L225 Difference]: With dead ends: 8298 [2023-12-18 22:18:30,546 INFO L226 Difference]: Without dead ends: 6517 [2023-12-18 22:18:30,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-18 22:18:30,551 INFO L413 NwaCegarLoop]: 4461 mSDtfsCounter, 5566 mSDsluCounter, 17510 mSDsCounter, 0 mSdLazyCounter, 3878 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5586 SdHoareTripleChecker+Valid, 21971 SdHoareTripleChecker+Invalid, 3947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-18 22:18:30,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5586 Valid, 21971 Invalid, 3947 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [69 Valid, 3878 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-18 22:18:30,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6517 states. [2023-12-18 22:18:30,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6517 to 5331. [2023-12-18 22:18:30,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5331 states, 5062 states have (on average 1.7194784670090872) internal successors, (8704), 5073 states have internal predecessors, (8704), 205 states have call successors, (205), 55 states have call predecessors, (205), 62 states have return successors, (238), 210 states have call predecessors, (238), 203 states have call successors, (238) [2023-12-18 22:18:30,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5331 states to 5331 states and 9147 transitions. [2023-12-18 22:18:30,685 INFO L78 Accepts]: Start accepts. Automaton has 5331 states and 9147 transitions. Word has length 172 [2023-12-18 22:18:30,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:18:30,685 INFO L495 AbstractCegarLoop]: Abstraction has 5331 states and 9147 transitions. [2023-12-18 22:18:30,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:18:30,686 INFO L276 IsEmpty]: Start isEmpty. Operand 5331 states and 9147 transitions. [2023-12-18 22:18:30,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-18 22:18:30,688 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:18:30,688 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:18:30,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-18 22:18:30,688 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:18:30,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:18:30,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1868694518, now seen corresponding path program 1 times [2023-12-18 22:18:30,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:18:30,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095163971] [2023-12-18 22:18:30,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:18:30,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:18:30,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:30,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:18:30,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:30,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-18 22:18:30,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:30,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-18 22:18:30,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:30,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-18 22:18:30,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:30,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-18 22:18:30,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:30,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:18:30,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:18:30,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095163971] [2023-12-18 22:18:30,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095163971] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:18:30,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:18:30,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:18:30,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441734759] [2023-12-18 22:18:30,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:18:30,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:18:30,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:18:30,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:18:30,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:18:30,901 INFO L87 Difference]: Start difference. First operand 5331 states and 9147 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:18:35,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:18:35,515 INFO L93 Difference]: Finished difference Result 13422 states and 22477 transitions. [2023-12-18 22:18:35,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-18 22:18:35,516 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2023-12-18 22:18:35,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:18:35,549 INFO L225 Difference]: With dead ends: 13422 [2023-12-18 22:18:35,550 INFO L226 Difference]: Without dead ends: 10231 [2023-12-18 22:18:35,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-18 22:18:35,565 INFO L413 NwaCegarLoop]: 4461 mSDtfsCounter, 5571 mSDsluCounter, 17510 mSDsCounter, 0 mSdLazyCounter, 3860 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5591 SdHoareTripleChecker+Valid, 21971 SdHoareTripleChecker+Invalid, 3929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-18 22:18:35,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5591 Valid, 21971 Invalid, 3929 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [69 Valid, 3860 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-18 22:18:35,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10231 states. [2023-12-18 22:18:35,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10231 to 8156. [2023-12-18 22:18:35,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8156 states, 7655 states have (on average 1.680209013716525) internal successors, (12862), 7674 states have internal predecessors, (12862), 381 states have call successors, (381), 103 states have call predecessors, (381), 118 states have return successors, (476), 394 states have call predecessors, (476), 379 states have call successors, (476) [2023-12-18 22:18:35,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8156 states to 8156 states and 13719 transitions. [2023-12-18 22:18:35,852 INFO L78 Accepts]: Start accepts. Automaton has 8156 states and 13719 transitions. Word has length 172 [2023-12-18 22:18:35,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:18:35,852 INFO L495 AbstractCegarLoop]: Abstraction has 8156 states and 13719 transitions. [2023-12-18 22:18:35,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:18:35,852 INFO L276 IsEmpty]: Start isEmpty. Operand 8156 states and 13719 transitions. [2023-12-18 22:18:35,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-18 22:18:35,858 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:18:35,858 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:18:35,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-18 22:18:35,859 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:18:35,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:18:35,859 INFO L85 PathProgramCache]: Analyzing trace with hash -2024675060, now seen corresponding path program 1 times [2023-12-18 22:18:35,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:18:35,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083686360] [2023-12-18 22:18:35,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:18:35,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:18:35,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:35,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:18:35,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:36,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-18 22:18:36,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:36,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-18 22:18:36,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:36,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-18 22:18:36,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:36,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-18 22:18:36,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:36,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:18:36,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:18:36,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083686360] [2023-12-18 22:18:36,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083686360] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:18:36,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:18:36,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:18:36,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651636874] [2023-12-18 22:18:36,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:18:36,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:18:36,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:18:36,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:18:36,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:18:36,100 INFO L87 Difference]: Start difference. First operand 8156 states and 13719 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:18:37,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:18:37,936 INFO L93 Difference]: Finished difference Result 16319 states and 27264 transitions. [2023-12-18 22:18:37,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-18 22:18:37,940 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2023-12-18 22:18:37,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:18:37,968 INFO L225 Difference]: With dead ends: 16319 [2023-12-18 22:18:37,969 INFO L226 Difference]: Without dead ends: 10303 [2023-12-18 22:18:37,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-18 22:18:37,986 INFO L413 NwaCegarLoop]: 4232 mSDtfsCounter, 5288 mSDsluCounter, 12540 mSDsCounter, 0 mSdLazyCounter, 1760 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5309 SdHoareTripleChecker+Valid, 16772 SdHoareTripleChecker+Invalid, 1860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-18 22:18:37,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5309 Valid, 16772 Invalid, 1860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1760 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-18 22:18:37,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10303 states. [2023-12-18 22:18:38,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10303 to 8156. [2023-12-18 22:18:38,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8156 states, 7655 states have (on average 1.6779882429784454) internal successors, (12845), 7674 states have internal predecessors, (12845), 381 states have call successors, (381), 103 states have call predecessors, (381), 118 states have return successors, (476), 394 states have call predecessors, (476), 379 states have call successors, (476) [2023-12-18 22:18:38,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8156 states to 8156 states and 13702 transitions. [2023-12-18 22:18:38,242 INFO L78 Accepts]: Start accepts. Automaton has 8156 states and 13702 transitions. Word has length 172 [2023-12-18 22:18:38,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:18:38,243 INFO L495 AbstractCegarLoop]: Abstraction has 8156 states and 13702 transitions. [2023-12-18 22:18:38,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:18:38,244 INFO L276 IsEmpty]: Start isEmpty. Operand 8156 states and 13702 transitions. [2023-12-18 22:18:38,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-18 22:18:38,247 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:18:38,247 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:18:38,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-18 22:18:38,248 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:18:38,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:18:38,248 INFO L85 PathProgramCache]: Analyzing trace with hash 482422414, now seen corresponding path program 1 times [2023-12-18 22:18:38,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:18:38,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116937097] [2023-12-18 22:18:38,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:18:38,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:18:38,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:38,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:18:38,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:38,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-18 22:18:38,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:38,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-18 22:18:38,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:38,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-18 22:18:38,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:38,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-18 22:18:38,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:38,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:18:38,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:18:38,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116937097] [2023-12-18 22:18:38,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116937097] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:18:38,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:18:38,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:18:38,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179005743] [2023-12-18 22:18:38,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:18:38,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:18:38,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:18:38,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:18:38,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:18:38,460 INFO L87 Difference]: Start difference. First operand 8156 states and 13702 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:18:40,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:18:40,364 INFO L93 Difference]: Finished difference Result 16301 states and 27177 transitions. [2023-12-18 22:18:40,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-18 22:18:40,365 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2023-12-18 22:18:40,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:18:40,386 INFO L225 Difference]: With dead ends: 16301 [2023-12-18 22:18:40,386 INFO L226 Difference]: Without dead ends: 10285 [2023-12-18 22:18:40,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-18 22:18:40,399 INFO L413 NwaCegarLoop]: 4232 mSDtfsCounter, 5286 mSDsluCounter, 12540 mSDsCounter, 0 mSdLazyCounter, 1746 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5307 SdHoareTripleChecker+Valid, 16772 SdHoareTripleChecker+Invalid, 1846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-18 22:18:40,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5307 Valid, 16772 Invalid, 1846 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [100 Valid, 1746 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-18 22:18:40,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10285 states. [2023-12-18 22:18:40,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10285 to 8156. [2023-12-18 22:18:40,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8156 states, 7655 states have (on average 1.6757674722403657) internal successors, (12828), 7674 states have internal predecessors, (12828), 381 states have call successors, (381), 103 states have call predecessors, (381), 118 states have return successors, (476), 394 states have call predecessors, (476), 379 states have call successors, (476) [2023-12-18 22:18:40,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8156 states to 8156 states and 13685 transitions. [2023-12-18 22:18:40,637 INFO L78 Accepts]: Start accepts. Automaton has 8156 states and 13685 transitions. Word has length 172 [2023-12-18 22:18:40,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:18:40,637 INFO L495 AbstractCegarLoop]: Abstraction has 8156 states and 13685 transitions. [2023-12-18 22:18:40,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:18:40,638 INFO L276 IsEmpty]: Start isEmpty. Operand 8156 states and 13685 transitions. [2023-12-18 22:18:40,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-18 22:18:40,642 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:18:40,642 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:18:40,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-18 22:18:40,643 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:18:40,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:18:40,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1653460788, now seen corresponding path program 1 times [2023-12-18 22:18:40,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:18:40,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947079041] [2023-12-18 22:18:40,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:18:40,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:18:40,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:40,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:18:40,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:40,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-18 22:18:40,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:40,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-18 22:18:40,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:40,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-18 22:18:40,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:40,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-18 22:18:40,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:40,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:18:40,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:18:40,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947079041] [2023-12-18 22:18:40,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947079041] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:18:40,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:18:40,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:18:40,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676547750] [2023-12-18 22:18:40,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:18:40,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:18:40,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:18:40,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:18:40,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:18:40,860 INFO L87 Difference]: Start difference. First operand 8156 states and 13685 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:18:45,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:18:45,365 INFO L93 Difference]: Finished difference Result 23615 states and 39019 transitions. [2023-12-18 22:18:45,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-18 22:18:45,365 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2023-12-18 22:18:45,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:18:45,449 INFO L225 Difference]: With dead ends: 23615 [2023-12-18 22:18:45,449 INFO L226 Difference]: Without dead ends: 17599 [2023-12-18 22:18:45,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-18 22:18:45,466 INFO L413 NwaCegarLoop]: 4461 mSDtfsCounter, 5552 mSDsluCounter, 17510 mSDsCounter, 0 mSdLazyCounter, 3783 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5572 SdHoareTripleChecker+Valid, 21971 SdHoareTripleChecker+Invalid, 3852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-18 22:18:45,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5572 Valid, 21971 Invalid, 3852 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [69 Valid, 3783 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-18 22:18:45,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17599 states. [2023-12-18 22:18:45,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17599 to 13872. [2023-12-18 22:18:45,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13872 states, 12907 states have (on average 1.642829472379329) internal successors, (21204), 12942 states have internal predecessors, (21204), 733 states have call successors, (733), 199 states have call predecessors, (733), 230 states have return successors, (1006), 762 states have call predecessors, (1006), 731 states have call successors, (1006) [2023-12-18 22:18:45,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13872 states to 13872 states and 22943 transitions. [2023-12-18 22:18:45,890 INFO L78 Accepts]: Start accepts. Automaton has 13872 states and 22943 transitions. Word has length 172 [2023-12-18 22:18:45,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:18:45,890 INFO L495 AbstractCegarLoop]: Abstraction has 13872 states and 22943 transitions. [2023-12-18 22:18:45,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:18:45,891 INFO L276 IsEmpty]: Start isEmpty. Operand 13872 states and 22943 transitions. [2023-12-18 22:18:45,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-18 22:18:45,897 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:18:45,897 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:18:45,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-18 22:18:45,898 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:18:45,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:18:45,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1583812914, now seen corresponding path program 1 times [2023-12-18 22:18:45,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:18:45,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875640686] [2023-12-18 22:18:45,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:18:45,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:18:45,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:45,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:18:45,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:46,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-18 22:18:46,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:46,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-18 22:18:46,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:46,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-18 22:18:46,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:46,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-18 22:18:46,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:46,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:18:46,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:18:46,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875640686] [2023-12-18 22:18:46,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875640686] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:18:46,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:18:46,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:18:46,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688471501] [2023-12-18 22:18:46,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:18:46,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:18:46,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:18:46,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:18:46,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:18:46,116 INFO L87 Difference]: Start difference. First operand 13872 states and 22943 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:18:50,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:18:50,672 INFO L93 Difference]: Finished difference Result 49361 states and 81209 transitions. [2023-12-18 22:18:50,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-18 22:18:50,673 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2023-12-18 22:18:50,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:18:50,757 INFO L225 Difference]: With dead ends: 49361 [2023-12-18 22:18:50,757 INFO L226 Difference]: Without dead ends: 37629 [2023-12-18 22:18:50,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-18 22:18:50,780 INFO L413 NwaCegarLoop]: 4256 mSDtfsCounter, 6118 mSDsluCounter, 16945 mSDsCounter, 0 mSdLazyCounter, 3169 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6152 SdHoareTripleChecker+Valid, 21201 SdHoareTripleChecker+Invalid, 3283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 3169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-18 22:18:50,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6152 Valid, 21201 Invalid, 3283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 3169 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-18 22:18:50,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37629 states. [2023-12-18 22:18:51,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37629 to 25265. [2023-12-18 22:18:51,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25265 states, 23404 states have (on average 1.6218595111946676) internal successors, (37958), 23471 states have internal predecessors, (37958), 1405 states have call successors, (1405), 391 states have call predecessors, (1405), 454 states have return successors, (2196), 1466 states have call predecessors, (2196), 1403 states have call successors, (2196) [2023-12-18 22:18:51,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25265 states to 25265 states and 41559 transitions. [2023-12-18 22:18:51,983 INFO L78 Accepts]: Start accepts. Automaton has 25265 states and 41559 transitions. Word has length 172 [2023-12-18 22:18:51,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:18:51,984 INFO L495 AbstractCegarLoop]: Abstraction has 25265 states and 41559 transitions. [2023-12-18 22:18:51,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:18:51,984 INFO L276 IsEmpty]: Start isEmpty. Operand 25265 states and 41559 transitions. [2023-12-18 22:18:51,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-18 22:18:51,996 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:18:51,996 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:18:51,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-18 22:18:51,996 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:18:51,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:18:51,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1165924212, now seen corresponding path program 1 times [2023-12-18 22:18:51,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:18:51,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245084647] [2023-12-18 22:18:51,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:18:51,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:18:52,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:52,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:18:52,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:52,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-18 22:18:52,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:52,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-18 22:18:52,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:52,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-18 22:18:52,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:52,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-18 22:18:52,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:18:52,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:18:52,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:18:52,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245084647] [2023-12-18 22:18:52,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245084647] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:18:52,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:18:52,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:18:52,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825862698] [2023-12-18 22:18:52,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:18:52,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:18:52,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:18:52,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:18:52,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:18:52,210 INFO L87 Difference]: Start difference. First operand 25265 states and 41559 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:18:58,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:18:58,068 INFO L93 Difference]: Finished difference Result 94704 states and 156191 transitions. [2023-12-18 22:18:58,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-18 22:18:58,069 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2023-12-18 22:18:58,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:18:58,303 INFO L225 Difference]: With dead ends: 94704 [2023-12-18 22:18:58,304 INFO L226 Difference]: Without dead ends: 71579 [2023-12-18 22:18:58,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-18 22:18:58,381 INFO L413 NwaCegarLoop]: 4458 mSDtfsCounter, 5659 mSDsluCounter, 17502 mSDsCounter, 0 mSdLazyCounter, 4479 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5678 SdHoareTripleChecker+Valid, 21960 SdHoareTripleChecker+Invalid, 4550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 4479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-18 22:18:58,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5678 Valid, 21960 Invalid, 4550 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [71 Valid, 4479 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-18 22:18:58,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71579 states. [2023-12-18 22:19:00,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71579 to 47538. [2023-12-18 22:19:00,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47538 states, 43917 states have (on average 1.6083065783181911) internal successors, (70632), 44048 states have internal predecessors, (70632), 2717 states have call successors, (2717), 775 states have call predecessors, (2717), 902 states have return successors, (5030), 2842 states have call predecessors, (5030), 2715 states have call successors, (5030) [2023-12-18 22:19:00,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47538 states to 47538 states and 78379 transitions. [2023-12-18 22:19:00,682 INFO L78 Accepts]: Start accepts. Automaton has 47538 states and 78379 transitions. Word has length 172 [2023-12-18 22:19:00,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:19:00,683 INFO L495 AbstractCegarLoop]: Abstraction has 47538 states and 78379 transitions. [2023-12-18 22:19:00,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:19:00,683 INFO L276 IsEmpty]: Start isEmpty. Operand 47538 states and 78379 transitions. [2023-12-18 22:19:00,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-18 22:19:00,709 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:19:00,709 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:19:00,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-18 22:19:00,710 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:19:00,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:19:00,710 INFO L85 PathProgramCache]: Analyzing trace with hash 233029390, now seen corresponding path program 1 times [2023-12-18 22:19:00,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:19:00,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117328428] [2023-12-18 22:19:00,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:19:00,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:19:00,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:19:00,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:19:00,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:19:01,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-18 22:19:01,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:19:01,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-18 22:19:01,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:19:01,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-18 22:19:01,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:19:01,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-18 22:19:01,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:19:01,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:19:01,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:19:01,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117328428] [2023-12-18 22:19:01,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117328428] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:19:01,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:19:01,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:19:01,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304394888] [2023-12-18 22:19:01,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:19:01,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:19:01,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:19:01,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:19:01,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:19:01,168 INFO L87 Difference]: Start difference. First operand 47538 states and 78379 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:19:08,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:19:08,155 INFO L93 Difference]: Finished difference Result 182959 states and 303749 transitions. [2023-12-18 22:19:08,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-18 22:19:08,156 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2023-12-18 22:19:08,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:19:08,572 INFO L225 Difference]: With dead ends: 182959 [2023-12-18 22:19:08,572 INFO L226 Difference]: Without dead ends: 137561 [2023-12-18 22:19:08,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-18 22:19:08,671 INFO L413 NwaCegarLoop]: 4459 mSDtfsCounter, 5948 mSDsluCounter, 17505 mSDsCounter, 0 mSdLazyCounter, 3734 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5982 SdHoareTripleChecker+Valid, 21964 SdHoareTripleChecker+Invalid, 3806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 3734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-18 22:19:08,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5982 Valid, 21964 Invalid, 3806 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [72 Valid, 3734 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-18 22:19:08,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137561 states. [2023-12-18 22:19:12,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137561 to 92595. [2023-12-18 22:19:12,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92595 states, 85518 states have (on average 1.6020253046142332) internal successors, (137002), 85777 states have internal predecessors, (137002), 5277 states have call successors, (5277), 1543 states have call predecessors, (5277), 1798 states have return successors, (12092), 5530 states have call predecessors, (12092), 5275 states have call successors, (12092) [2023-12-18 22:19:13,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92595 states to 92595 states and 154371 transitions. [2023-12-18 22:19:13,276 INFO L78 Accepts]: Start accepts. Automaton has 92595 states and 154371 transitions. Word has length 172 [2023-12-18 22:19:13,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:19:13,277 INFO L495 AbstractCegarLoop]: Abstraction has 92595 states and 154371 transitions. [2023-12-18 22:19:13,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:19:13,277 INFO L276 IsEmpty]: Start isEmpty. Operand 92595 states and 154371 transitions. [2023-12-18 22:19:13,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-18 22:19:13,574 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:19:13,574 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:19:13,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-18 22:19:13,575 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:19:13,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:19:13,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1384411060, now seen corresponding path program 1 times [2023-12-18 22:19:13,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:19:13,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034153130] [2023-12-18 22:19:13,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:19:13,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:19:13,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:19:13,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:19:13,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:19:13,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-18 22:19:13,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:19:13,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-18 22:19:13,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:19:13,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-18 22:19:13,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:19:13,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-18 22:19:13,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:19:13,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:19:13,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:19:13,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034153130] [2023-12-18 22:19:13,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034153130] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:19:13,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:19:13,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:19:13,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793906573] [2023-12-18 22:19:13,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:19:13,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:19:13,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:19:13,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:19:13,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:19:13,979 INFO L87 Difference]: Start difference. First operand 92595 states and 154371 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:19:24,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:19:24,509 INFO L93 Difference]: Finished difference Result 358958 states and 603931 transitions. [2023-12-18 22:19:24,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-18 22:19:24,510 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2023-12-18 22:19:24,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:19:25,625 INFO L225 Difference]: With dead ends: 358958 [2023-12-18 22:19:25,625 INFO L226 Difference]: Without dead ends: 268503 [2023-12-18 22:19:25,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-18 22:19:25,987 INFO L413 NwaCegarLoop]: 4459 mSDtfsCounter, 5918 mSDsluCounter, 17505 mSDsCounter, 0 mSdLazyCounter, 3716 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5952 SdHoareTripleChecker+Valid, 21964 SdHoareTripleChecker+Invalid, 3788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 3716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-18 22:19:25,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5952 Valid, 21964 Invalid, 3788 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [72 Valid, 3716 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-18 22:19:26,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268503 states. [2023-12-18 22:19:33,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268503 to 182708. [2023-12-18 22:19:34,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182708 states, 168847 states have (on average 1.5990571345656126) internal successors, (269996), 169362 states have internal predecessors, (269996), 10269 states have call successors, (10269), 3079 states have call predecessors, (10269), 3590 states have return successors, (30462), 10778 states have call predecessors, (30462), 10267 states have call successors, (30462) [2023-12-18 22:19:35,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182708 states to 182708 states and 310727 transitions. [2023-12-18 22:19:35,371 INFO L78 Accepts]: Start accepts. Automaton has 182708 states and 310727 transitions. Word has length 172 [2023-12-18 22:19:35,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:19:35,372 INFO L495 AbstractCegarLoop]: Abstraction has 182708 states and 310727 transitions. [2023-12-18 22:19:35,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:19:35,372 INFO L276 IsEmpty]: Start isEmpty. Operand 182708 states and 310727 transitions. [2023-12-18 22:19:35,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-18 22:19:35,436 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:19:35,436 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:19:35,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-18 22:19:35,437 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:19:35,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:19:35,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1020944562, now seen corresponding path program 1 times [2023-12-18 22:19:35,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:19:35,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729638953] [2023-12-18 22:19:35,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:19:35,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:19:35,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:19:35,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:19:35,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:19:35,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-18 22:19:35,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:19:35,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-18 22:19:35,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:19:35,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-18 22:19:35,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:19:35,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-18 22:19:35,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:19:35,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:19:35,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:19:35,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729638953] [2023-12-18 22:19:35,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729638953] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:19:35,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:19:35,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:19:35,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779679217] [2023-12-18 22:19:35,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:19:35,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:19:35,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:19:35,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:19:35,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:19:35,640 INFO L87 Difference]: Start difference. First operand 182708 states and 310727 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:19:54,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:19:54,213 INFO L93 Difference]: Finished difference Result 700459 states and 1204893 transitions. [2023-12-18 22:19:54,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-18 22:19:54,214 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2023-12-18 22:19:54,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:19:56,764 INFO L225 Difference]: With dead ends: 700459 [2023-12-18 22:19:56,764 INFO L226 Difference]: Without dead ends: 519891 [2023-12-18 22:19:57,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-18 22:19:57,473 INFO L413 NwaCegarLoop]: 4459 mSDtfsCounter, 5843 mSDsluCounter, 17505 mSDsCounter, 0 mSdLazyCounter, 3689 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5877 SdHoareTripleChecker+Valid, 21964 SdHoareTripleChecker+Invalid, 3761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 3689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-12-18 22:19:57,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5877 Valid, 21964 Invalid, 3761 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [72 Valid, 3689 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-12-18 22:19:57,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519891 states. [2023-12-18 22:20:14,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519891 to 363446. [2023-12-18 22:20:14,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363446 states, 336273 states have (on average 1.598463153449727) internal successors, (537520), 337300 states have internal predecessors, (537520), 19997 states have call successors, (19997), 6151 states have call predecessors, (19997), 7174 states have return successors, (80068), 21018 states have call predecessors, (80068), 19995 states have call successors, (80068) [2023-12-18 22:20:17,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363446 states to 363446 states and 637585 transitions. [2023-12-18 22:20:17,121 INFO L78 Accepts]: Start accepts. Automaton has 363446 states and 637585 transitions. Word has length 172 [2023-12-18 22:20:17,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 22:20:17,122 INFO L495 AbstractCegarLoop]: Abstraction has 363446 states and 637585 transitions. [2023-12-18 22:20:17,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:20:17,122 INFO L276 IsEmpty]: Start isEmpty. Operand 363446 states and 637585 transitions. [2023-12-18 22:20:17,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-18 22:20:17,435 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 22:20:17,436 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 22:20:17,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-18 22:20:17,436 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 22:20:17,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 22:20:17,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1565817136, now seen corresponding path program 1 times [2023-12-18 22:20:17,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 22:20:17,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360818591] [2023-12-18 22:20:17,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 22:20:17,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 22:20:17,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:20:17,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-18 22:20:17,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:20:17,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-18 22:20:17,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:20:17,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-18 22:20:17,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:20:17,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-18 22:20:17,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:20:17,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-18 22:20:17,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 22:20:17,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 22:20:17,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 22:20:17,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360818591] [2023-12-18 22:20:17,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360818591] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 22:20:17,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 22:20:17,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-18 22:20:17,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105113705] [2023-12-18 22:20:17,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 22:20:17,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 22:20:17,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 22:20:17,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 22:20:17,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-18 22:20:17,753 INFO L87 Difference]: Start difference. First operand 363446 states and 637585 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-18 22:20:51,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 22:20:51,861 INFO L93 Difference]: Finished difference Result 1382955 states and 2457269 transitions. [2023-12-18 22:20:51,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-18 22:20:51,862 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2023-12-18 22:20:51,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 22:20:58,723 INFO L225 Difference]: With dead ends: 1382955 [2023-12-18 22:20:58,723 INFO L226 Difference]: Without dead ends: 1021649 [2023-12-18 22:21:00,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-18 22:21:00,398 INFO L413 NwaCegarLoop]: 4459 mSDtfsCounter, 5613 mSDsluCounter, 17505 mSDsCounter, 0 mSdLazyCounter, 4179 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5632 SdHoareTripleChecker+Valid, 21964 SdHoareTripleChecker+Invalid, 4250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 4179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-12-18 22:21:00,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5632 Valid, 21964 Invalid, 4250 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [71 Valid, 4179 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-12-18 22:21:00,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1021649 states.