/usr/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 -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 07:00:17,416 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 07:00:17,418 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 07:00:17,453 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-02 07:00:17,471 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 07:00:17,473 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 07:00:17,473 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 07:00:17,474 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 07:00:17,475 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 07:00:17,475 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 07:00:17,477 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 07:00:17,481 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 07:00:17,482 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 07:00:17,483 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 07:00:17,483 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 07:00:17,484 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 07:00:17,491 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-02 07:00:17,497 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 07:00:17,498 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 07:00:17,499 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 07:00:17,500 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-04-02 07:00:17,525 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 07:00:17,525 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 07:00:17,525 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 07:00:17,525 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 07:00:17,527 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 07:00:17,527 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 07:00:17,527 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 07:00:17,527 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 07:00:17,527 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 07:00:17,527 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 07:00:17,528 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 07:00:17,528 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 07:00:17,528 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 07:00:17,528 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 07:00:17,528 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 07:00:17,528 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 07:00:17,529 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 07:00:17,529 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 07:00:17,529 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 07:00:17,529 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 07:00:17,529 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 07:00:17,529 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 07:00:17,529 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 07:00:17,529 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 07:00:17,529 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 07:00:17,529 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 07:00:17,530 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 07:00:17,530 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 07:00:17,530 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 07:00:17,530 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 07:00:17,530 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 07:00:17,530 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 07:00:17,530 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 07:00:17,530 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 07:00:17,531 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 07:00:17,531 INFO L138 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 07:00:17,741 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 07:00:17,778 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 07:00:17,780 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 07:00:17,781 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 07:00:17,781 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 07:00:17,782 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2023-04-02 07:00:19,016 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 07:00:19,247 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 07:00:19,248 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2023-04-02 07:00:19,264 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1914c208/ede3f07ef03c43c39d227c7eb6b76a17/FLAGc6ce79b3a [2023-04-02 07:00:19,292 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1914c208/ede3f07ef03c43c39d227c7eb6b76a17 [2023-04-02 07:00:19,294 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 07:00:19,295 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 07:00:19,297 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 07:00:19,297 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 07:00:19,300 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 07:00:19,300 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 07:00:19" (1/1) ... [2023-04-02 07:00:19,301 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59a9315f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 07:00:19, skipping insertion in model container [2023-04-02 07:00:19,301 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 07:00:19" (1/1) ... [2023-04-02 07:00:19,306 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 07:00:19,381 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 07:00:19,706 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c[22673,22686] [2023-04-02 07:00:19,800 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 07:00:19,812 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 07:00:19,868 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c[22673,22686] [2023-04-02 07:00:19,935 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 07:00:19,966 INFO L208 MainTranslator]: Completed translation [2023-04-02 07:00:19,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 07:00:19 WrapperNode [2023-04-02 07:00:19,967 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 07:00:19,967 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 07:00:19,968 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 07:00:19,968 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 07:00:19,981 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 07:00:19" (1/1) ... [2023-04-02 07:00:19,982 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 07:00:19" (1/1) ... [2023-04-02 07:00:20,014 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 07:00:19" (1/1) ... [2023-04-02 07:00:20,015 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 07:00:19" (1/1) ... [2023-04-02 07:00:20,079 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 07:00:19" (1/1) ... [2023-04-02 07:00:20,103 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 07:00:19" (1/1) ... [2023-04-02 07:00:20,115 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 07:00:19" (1/1) ... [2023-04-02 07:00:20,125 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 07:00:19" (1/1) ... [2023-04-02 07:00:20,145 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 07:00:20,146 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 07:00:20,146 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 07:00:20,146 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 07:00:20,146 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 07:00:19" (1/1) ... [2023-04-02 07:00:20,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 07:00:20,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 07:00:20,178 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-02 07:00:20,211 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-02 07:00:20,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 07:00:20,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 07:00:20,234 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 07:00:20,234 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 07:00:20,235 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 07:00:20,235 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 07:00:20,235 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 07:00:20,235 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 07:00:20,235 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 07:00:20,235 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-02 07:00:20,235 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-02 07:00:20,235 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-02 07:00:20,235 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 07:00:20,235 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-02 07:00:20,235 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-02 07:00:20,235 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-02 07:00:20,235 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-02 07:00:20,235 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-02 07:00:20,235 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-02 07:00:20,235 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2023-04-02 07:00:20,236 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-02 07:00:20,236 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-02 07:00:20,236 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 07:00:20,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 07:00:20,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 07:00:20,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 07:00:20,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 07:00:20,236 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 07:00:20,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 07:00:20,466 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 07:00:20,470 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 07:00:21,661 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 07:00:21,671 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 07:00:21,671 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-02 07:00:21,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 07:00:21 BoogieIcfgContainer [2023-04-02 07:00:21,673 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 07:00:21,675 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 07:00:21,675 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 07:00:21,678 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 07:00:21,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 07:00:19" (1/3) ... [2023-04-02 07:00:21,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71f9fdf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 07:00:21, skipping insertion in model container [2023-04-02 07:00:21,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 07:00:19" (2/3) ... [2023-04-02 07:00:21,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71f9fdf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 07:00:21, skipping insertion in model container [2023-04-02 07:00:21,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 07:00:21" (3/3) ... [2023-04-02 07:00:21,680 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2023-04-02 07:00:21,694 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 07:00:21,694 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 07:00:21,740 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 07:00:21,745 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=LoopsAndPotentialCycles, 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;@2b1990c9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 07:00:21,745 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 07:00:21,752 INFO L276 IsEmpty]: Start isEmpty. Operand has 763 states, 749 states have (on average 1.8317757009345794) internal successors, (1372), 758 states have internal predecessors, (1372), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 07:00:21,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2023-04-02 07:00:21,769 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 07:00:21,770 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 07:00:21,771 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 07:00:21,774 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 07:00:21,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1811357682, now seen corresponding path program 1 times [2023-04-02 07:00:21,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 07:00:21,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558304959] [2023-04-02 07:00:21,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 07:00:21,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 07:00:22,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:00:23,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 07:00:23,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:00:23,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 07:00:23,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 07:00:23,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558304959] [2023-04-02 07:00:23,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558304959] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 07:00:23,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 07:00:23,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 07:00:23,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612519138] [2023-04-02 07:00:23,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 07:00:23,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 07:00:23,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 07:00:23,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 07:00:23,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 07:00:23,304 INFO L87 Difference]: Start difference. First operand has 763 states, 749 states have (on average 1.8317757009345794) internal successors, (1372), 758 states have internal predecessors, (1372), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 4 states have (on average 48.5) internal successors, (194), 3 states have internal predecessors, (194), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:00:26,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 07:00:26,895 INFO L93 Difference]: Finished difference Result 1209 states and 2106 transitions. [2023-04-02 07:00:26,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 07:00:26,897 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 48.5) internal successors, (194), 3 states have internal predecessors, (194), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 197 [2023-04-02 07:00:26,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 07:00:26,919 INFO L225 Difference]: With dead ends: 1209 [2023-04-02 07:00:26,919 INFO L226 Difference]: Without dead ends: 955 [2023-04-02 07:00:26,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 07:00:26,926 INFO L413 NwaCegarLoop]: 1375 mSDtfsCounter, 376 mSDsluCounter, 1299 mSDsCounter, 0 mSdLazyCounter, 1400 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 2674 SdHoareTripleChecker+Invalid, 1406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-04-02 07:00:26,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [376 Valid, 2674 Invalid, 1406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1400 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-04-02 07:00:26,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 955 states. [2023-04-02 07:00:27,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 955 to 953. [2023-04-02 07:00:27,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 953 states, 949 states have (on average 1.7355110642781875) internal successors, (1647), 949 states have internal predecessors, (1647), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:00:27,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 953 states to 953 states and 1650 transitions. [2023-04-02 07:00:27,009 INFO L78 Accepts]: Start accepts. Automaton has 953 states and 1650 transitions. Word has length 197 [2023-04-02 07:00:27,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 07:00:27,012 INFO L495 AbstractCegarLoop]: Abstraction has 953 states and 1650 transitions. [2023-04-02 07:00:27,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.5) internal successors, (194), 3 states have internal predecessors, (194), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:00:27,013 INFO L276 IsEmpty]: Start isEmpty. Operand 953 states and 1650 transitions. [2023-04-02 07:00:27,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2023-04-02 07:00:27,021 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 07:00:27,022 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 07:00:27,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 07:00:27,022 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 07:00:27,023 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 07:00:27,023 INFO L85 PathProgramCache]: Analyzing trace with hash 2145842579, now seen corresponding path program 1 times [2023-04-02 07:00:27,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 07:00:27,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063589590] [2023-04-02 07:00:27,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 07:00:27,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 07:00:27,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:00:27,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 07:00:27,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:00:27,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 07:00:27,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 07:00:27,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063589590] [2023-04-02 07:00:27,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063589590] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 07:00:27,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 07:00:27,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 07:00:27,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651232306] [2023-04-02 07:00:27,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 07:00:27,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 07:00:27,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 07:00:27,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 07:00:27,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 07:00:27,897 INFO L87 Difference]: Start difference. First operand 953 states and 1650 transitions. Second operand has 4 states, 4 states have (on average 49.5) internal successors, (198), 3 states have internal predecessors, (198), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:00:31,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 07:00:31,097 INFO L93 Difference]: Finished difference Result 1771 states and 3002 transitions. [2023-04-02 07:00:31,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 07:00:31,097 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 49.5) internal successors, (198), 3 states have internal predecessors, (198), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 201 [2023-04-02 07:00:31,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 07:00:31,102 INFO L225 Difference]: With dead ends: 1771 [2023-04-02 07:00:31,102 INFO L226 Difference]: Without dead ends: 1350 [2023-04-02 07:00:31,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 07:00:31,105 INFO L413 NwaCegarLoop]: 1311 mSDtfsCounter, 332 mSDsluCounter, 1276 mSDsCounter, 0 mSdLazyCounter, 1322 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 2587 SdHoareTripleChecker+Invalid, 1324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-04-02 07:00:31,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 2587 Invalid, 1324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1322 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-04-02 07:00:31,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1350 states. [2023-04-02 07:00:31,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1350 to 1348. [2023-04-02 07:00:31,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1348 states, 1344 states have (on average 1.7098214285714286) internal successors, (2298), 1344 states have internal predecessors, (2298), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:00:31,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1348 states to 1348 states and 2301 transitions. [2023-04-02 07:00:31,137 INFO L78 Accepts]: Start accepts. Automaton has 1348 states and 2301 transitions. Word has length 201 [2023-04-02 07:00:31,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 07:00:31,137 INFO L495 AbstractCegarLoop]: Abstraction has 1348 states and 2301 transitions. [2023-04-02 07:00:31,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.5) internal successors, (198), 3 states have internal predecessors, (198), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:00:31,138 INFO L276 IsEmpty]: Start isEmpty. Operand 1348 states and 2301 transitions. [2023-04-02 07:00:31,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2023-04-02 07:00:31,140 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 07:00:31,140 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 07:00:31,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 07:00:31,141 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 07:00:31,141 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 07:00:31,141 INFO L85 PathProgramCache]: Analyzing trace with hash -205945448, now seen corresponding path program 1 times [2023-04-02 07:00:31,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 07:00:31,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842957917] [2023-04-02 07:00:31,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 07:00:31,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 07:00:31,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:00:31,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 07:00:31,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:00:31,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 07:00:31,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 07:00:31,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842957917] [2023-04-02 07:00:31,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842957917] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 07:00:31,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 07:00:31,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 07:00:31,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331147209] [2023-04-02 07:00:31,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 07:00:31,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 07:00:31,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 07:00:31,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 07:00:31,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 07:00:31,882 INFO L87 Difference]: Start difference. First operand 1348 states and 2301 transitions. Second operand has 4 states, 4 states have (on average 50.5) internal successors, (202), 3 states have internal predecessors, (202), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:00:35,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 07:00:35,116 INFO L93 Difference]: Finished difference Result 2932 states and 4911 transitions. [2023-04-02 07:00:35,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 07:00:35,116 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 50.5) internal successors, (202), 3 states have internal predecessors, (202), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 205 [2023-04-02 07:00:35,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 07:00:35,124 INFO L225 Difference]: With dead ends: 2932 [2023-04-02 07:00:35,124 INFO L226 Difference]: Without dead ends: 2116 [2023-04-02 07:00:35,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 07:00:35,131 INFO L413 NwaCegarLoop]: 1311 mSDtfsCounter, 324 mSDsluCounter, 1277 mSDsCounter, 0 mSdLazyCounter, 1322 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 2588 SdHoareTripleChecker+Invalid, 1324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-04-02 07:00:35,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 2588 Invalid, 1324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1322 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-04-02 07:00:35,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2116 states. [2023-04-02 07:00:35,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2116 to 2114. [2023-04-02 07:00:35,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2114 states, 2110 states have (on average 1.6843601895734597) internal successors, (3554), 2110 states have internal predecessors, (3554), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:00:35,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2114 states to 2114 states and 3557 transitions. [2023-04-02 07:00:35,206 INFO L78 Accepts]: Start accepts. Automaton has 2114 states and 3557 transitions. Word has length 205 [2023-04-02 07:00:35,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 07:00:35,206 INFO L495 AbstractCegarLoop]: Abstraction has 2114 states and 3557 transitions. [2023-04-02 07:00:35,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.5) internal successors, (202), 3 states have internal predecessors, (202), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:00:35,207 INFO L276 IsEmpty]: Start isEmpty. Operand 2114 states and 3557 transitions. [2023-04-02 07:00:35,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2023-04-02 07:00:35,210 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 07:00:35,210 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 07:00:35,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 07:00:35,210 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 07:00:35,211 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 07:00:35,211 INFO L85 PathProgramCache]: Analyzing trace with hash 464481053, now seen corresponding path program 1 times [2023-04-02 07:00:35,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 07:00:35,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768933764] [2023-04-02 07:00:35,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 07:00:35,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 07:00:35,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:00:35,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 07:00:35,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:00:35,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 07:00:35,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 07:00:35,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768933764] [2023-04-02 07:00:35,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768933764] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 07:00:35,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 07:00:35,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 07:00:35,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046128653] [2023-04-02 07:00:35,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 07:00:35,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 07:00:35,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 07:00:35,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 07:00:35,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 07:00:35,874 INFO L87 Difference]: Start difference. First operand 2114 states and 3557 transitions. Second operand has 4 states, 4 states have (on average 51.5) internal successors, (206), 3 states have internal predecessors, (206), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:00:39,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 07:00:39,174 INFO L93 Difference]: Finished difference Result 5182 states and 8591 transitions. [2023-04-02 07:00:39,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 07:00:39,175 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 51.5) internal successors, (206), 3 states have internal predecessors, (206), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 209 [2023-04-02 07:00:39,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 07:00:39,185 INFO L225 Difference]: With dead ends: 5182 [2023-04-02 07:00:39,185 INFO L226 Difference]: Without dead ends: 3600 [2023-04-02 07:00:39,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 07:00:39,196 INFO L413 NwaCegarLoop]: 1311 mSDtfsCounter, 316 mSDsluCounter, 1278 mSDsCounter, 0 mSdLazyCounter, 1322 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 2589 SdHoareTripleChecker+Invalid, 1324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-04-02 07:00:39,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 2589 Invalid, 1324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1322 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-04-02 07:00:39,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3600 states. [2023-04-02 07:00:39,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3600 to 3598. [2023-04-02 07:00:39,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3598 states, 3594 states have (on average 1.6622148024485253) internal successors, (5974), 3594 states have internal predecessors, (5974), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:00:39,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3598 states to 3598 states and 5977 transitions. [2023-04-02 07:00:39,300 INFO L78 Accepts]: Start accepts. Automaton has 3598 states and 5977 transitions. Word has length 209 [2023-04-02 07:00:39,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 07:00:39,301 INFO L495 AbstractCegarLoop]: Abstraction has 3598 states and 5977 transitions. [2023-04-02 07:00:39,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.5) internal successors, (206), 3 states have internal predecessors, (206), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:00:39,301 INFO L276 IsEmpty]: Start isEmpty. Operand 3598 states and 5977 transitions. [2023-04-02 07:00:39,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2023-04-02 07:00:39,305 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 07:00:39,305 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 07:00:39,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 07:00:39,305 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 07:00:39,305 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 07:00:39,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1717371170, now seen corresponding path program 1 times [2023-04-02 07:00:39,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 07:00:39,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833803268] [2023-04-02 07:00:39,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 07:00:39,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 07:00:39,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:00:40,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 07:00:40,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:00:40,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 07:00:40,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 07:00:40,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833803268] [2023-04-02 07:00:40,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833803268] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 07:00:40,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 07:00:40,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 07:00:40,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016460619] [2023-04-02 07:00:40,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 07:00:40,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 07:00:40,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 07:00:40,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 07:00:40,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 07:00:40,102 INFO L87 Difference]: Start difference. First operand 3598 states and 5977 transitions. Second operand has 4 states, 4 states have (on average 52.5) internal successors, (210), 3 states have internal predecessors, (210), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:00:43,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 07:00:43,409 INFO L93 Difference]: Finished difference Result 9538 states and 15675 transitions. [2023-04-02 07:00:43,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 07:00:43,410 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 52.5) internal successors, (210), 3 states have internal predecessors, (210), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 213 [2023-04-02 07:00:43,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 07:00:43,470 INFO L225 Difference]: With dead ends: 9538 [2023-04-02 07:00:43,470 INFO L226 Difference]: Without dead ends: 6472 [2023-04-02 07:00:43,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 07:00:43,476 INFO L413 NwaCegarLoop]: 1311 mSDtfsCounter, 308 mSDsluCounter, 1279 mSDsCounter, 0 mSdLazyCounter, 1322 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 2590 SdHoareTripleChecker+Invalid, 1324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-04-02 07:00:43,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 2590 Invalid, 1324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1322 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-04-02 07:00:43,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6472 states. [2023-04-02 07:00:43,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6472 to 6470. [2023-04-02 07:00:43,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6470 states, 6466 states have (on average 1.6439839158676153) internal successors, (10630), 6466 states have internal predecessors, (10630), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:00:43,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6470 states to 6470 states and 10633 transitions. [2023-04-02 07:00:43,667 INFO L78 Accepts]: Start accepts. Automaton has 6470 states and 10633 transitions. Word has length 213 [2023-04-02 07:00:43,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 07:00:43,668 INFO L495 AbstractCegarLoop]: Abstraction has 6470 states and 10633 transitions. [2023-04-02 07:00:43,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.5) internal successors, (210), 3 states have internal predecessors, (210), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:00:43,668 INFO L276 IsEmpty]: Start isEmpty. Operand 6470 states and 10633 transitions. [2023-04-02 07:00:43,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2023-04-02 07:00:43,672 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 07:00:43,672 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 07:00:43,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-02 07:00:43,672 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 07:00:43,673 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 07:00:43,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1841552729, now seen corresponding path program 1 times [2023-04-02 07:00:43,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 07:00:43,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411468280] [2023-04-02 07:00:43,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 07:00:43,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 07:00:43,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:00:44,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 07:00:44,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:00:44,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 07:00:44,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 07:00:44,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411468280] [2023-04-02 07:00:44,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411468280] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 07:00:44,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 07:00:44,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-02 07:00:44,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478190194] [2023-04-02 07:00:44,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 07:00:44,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 07:00:44,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 07:00:44,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 07:00:44,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-02 07:00:44,396 INFO L87 Difference]: Start difference. First operand 6470 states and 10633 transitions. Second operand has 8 states, 8 states have (on average 26.75) internal successors, (214), 7 states have internal predecessors, (214), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:00:49,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 07:00:49,417 INFO L93 Difference]: Finished difference Result 39890 states and 65475 transitions. [2023-04-02 07:00:49,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-02 07:00:49,418 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 26.75) internal successors, (214), 7 states have internal predecessors, (214), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 217 [2023-04-02 07:00:49,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 07:00:49,512 INFO L225 Difference]: With dead ends: 39890 [2023-04-02 07:00:49,512 INFO L226 Difference]: Without dead ends: 33896 [2023-04-02 07:00:49,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2023-04-02 07:00:49,531 INFO L413 NwaCegarLoop]: 1319 mSDtfsCounter, 3581 mSDsluCounter, 13371 mSDsCounter, 0 mSdLazyCounter, 1587 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3581 SdHoareTripleChecker+Valid, 14690 SdHoareTripleChecker+Invalid, 1606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-04-02 07:00:49,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3581 Valid, 14690 Invalid, 1606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1587 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-04-02 07:00:49,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33896 states. [2023-04-02 07:00:50,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33896 to 12069. [2023-04-02 07:00:50,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12069 states, 12065 states have (on average 1.6441773725652715) internal successors, (19837), 12065 states have internal predecessors, (19837), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:00:50,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12069 states to 12069 states and 19840 transitions. [2023-04-02 07:00:50,416 INFO L78 Accepts]: Start accepts. Automaton has 12069 states and 19840 transitions. Word has length 217 [2023-04-02 07:00:50,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 07:00:50,416 INFO L495 AbstractCegarLoop]: Abstraction has 12069 states and 19840 transitions. [2023-04-02 07:00:50,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 26.75) internal successors, (214), 7 states have internal predecessors, (214), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:00:50,417 INFO L276 IsEmpty]: Start isEmpty. Operand 12069 states and 19840 transitions. [2023-04-02 07:00:50,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2023-04-02 07:00:50,425 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 07:00:50,425 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 07:00:50,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-02 07:00:50,425 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 07:00:50,431 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 07:00:50,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1324285798, now seen corresponding path program 1 times [2023-04-02 07:00:50,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 07:00:50,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980584543] [2023-04-02 07:00:50,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 07:00:50,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 07:00:50,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:00:51,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 07:00:51,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:00:51,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 07:00:51,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 07:00:51,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980584543] [2023-04-02 07:00:51,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980584543] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 07:00:51,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 07:00:51,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 07:00:51,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80367266] [2023-04-02 07:00:51,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 07:00:51,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 07:00:51,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 07:00:51,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 07:00:51,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-02 07:00:51,323 INFO L87 Difference]: Start difference. First operand 12069 states and 19840 transitions. Second operand has 5 states, 5 states have (on average 43.0) internal successors, (215), 4 states have internal predecessors, (215), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:00:55,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 07:00:55,989 INFO L93 Difference]: Finished difference Result 35500 states and 58288 transitions. [2023-04-02 07:00:55,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-02 07:00:55,989 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 43.0) internal successors, (215), 4 states have internal predecessors, (215), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 218 [2023-04-02 07:00:55,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 07:00:56,037 INFO L225 Difference]: With dead ends: 35500 [2023-04-02 07:00:56,038 INFO L226 Difference]: Without dead ends: 23963 [2023-04-02 07:00:56,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-02 07:00:56,061 INFO L413 NwaCegarLoop]: 1319 mSDtfsCounter, 1058 mSDsluCounter, 2641 mSDsCounter, 0 mSdLazyCounter, 1355 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1058 SdHoareTripleChecker+Valid, 3960 SdHoareTripleChecker+Invalid, 1362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-04-02 07:00:56,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1058 Valid, 3960 Invalid, 1362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1355 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-04-02 07:00:56,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23963 states. [2023-04-02 07:00:57,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23963 to 17968. [2023-04-02 07:00:57,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17968 states, 17964 states have (on average 1.640892896904921) internal successors, (29477), 17964 states have internal predecessors, (29477), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:00:57,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17968 states to 17968 states and 29480 transitions. [2023-04-02 07:00:57,296 INFO L78 Accepts]: Start accepts. Automaton has 17968 states and 29480 transitions. Word has length 218 [2023-04-02 07:00:57,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 07:00:57,296 INFO L495 AbstractCegarLoop]: Abstraction has 17968 states and 29480 transitions. [2023-04-02 07:00:57,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.0) internal successors, (215), 4 states have internal predecessors, (215), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:00:57,296 INFO L276 IsEmpty]: Start isEmpty. Operand 17968 states and 29480 transitions. [2023-04-02 07:00:57,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2023-04-02 07:00:57,305 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 07:00:57,305 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 07:00:57,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-02 07:00:57,305 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 07:00:57,306 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 07:00:57,306 INFO L85 PathProgramCache]: Analyzing trace with hash -16407119, now seen corresponding path program 1 times [2023-04-02 07:00:57,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 07:00:57,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060984172] [2023-04-02 07:00:57,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 07:00:57,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 07:00:57,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:00:57,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 07:00:57,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:00:57,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 07:00:57,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 07:00:57,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060984172] [2023-04-02 07:00:57,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060984172] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 07:00:57,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 07:00:57,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 07:00:57,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306090076] [2023-04-02 07:00:57,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 07:00:57,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 07:00:57,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 07:00:57,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 07:00:57,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 07:00:57,983 INFO L87 Difference]: Start difference. First operand 17968 states and 29480 transitions. Second operand has 4 states, 4 states have (on average 54.0) internal successors, (216), 3 states have internal predecessors, (216), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:01:03,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 07:01:03,667 INFO L93 Difference]: Finished difference Result 39663 states and 64920 transitions. [2023-04-02 07:01:03,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 07:01:03,668 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 54.0) internal successors, (216), 3 states have internal predecessors, (216), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 219 [2023-04-02 07:01:03,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 07:01:03,720 INFO L225 Difference]: With dead ends: 39663 [2023-04-02 07:01:03,721 INFO L226 Difference]: Without dead ends: 27635 [2023-04-02 07:01:03,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 07:01:03,741 INFO L413 NwaCegarLoop]: 1602 mSDtfsCounter, 341 mSDsluCounter, 1254 mSDsCounter, 0 mSdLazyCounter, 1608 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 2856 SdHoareTripleChecker+Invalid, 1612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-04-02 07:01:03,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [341 Valid, 2856 Invalid, 1612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1608 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-04-02 07:01:03,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27635 states. [2023-04-02 07:01:05,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27635 to 27633. [2023-04-02 07:01:05,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27633 states, 27629 states have (on average 1.632958123710594) internal successors, (45117), 27629 states have internal predecessors, (45117), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:01:05,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27633 states to 27633 states and 45120 transitions. [2023-04-02 07:01:05,631 INFO L78 Accepts]: Start accepts. Automaton has 27633 states and 45120 transitions. Word has length 219 [2023-04-02 07:01:05,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 07:01:05,631 INFO L495 AbstractCegarLoop]: Abstraction has 27633 states and 45120 transitions. [2023-04-02 07:01:05,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.0) internal successors, (216), 3 states have internal predecessors, (216), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:01:05,632 INFO L276 IsEmpty]: Start isEmpty. Operand 27633 states and 45120 transitions. [2023-04-02 07:01:05,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2023-04-02 07:01:05,635 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 07:01:05,635 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 07:01:05,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-02 07:01:05,636 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 07:01:05,636 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 07:01:05,636 INFO L85 PathProgramCache]: Analyzing trace with hash -39649593, now seen corresponding path program 1 times [2023-04-02 07:01:05,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 07:01:05,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355955285] [2023-04-02 07:01:05,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 07:01:05,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 07:01:05,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:01:06,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 07:01:06,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:01:06,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 07:01:06,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 07:01:06,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355955285] [2023-04-02 07:01:06,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355955285] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 07:01:06,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 07:01:06,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 07:01:06,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194795816] [2023-04-02 07:01:06,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 07:01:06,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 07:01:06,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 07:01:06,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 07:01:06,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 07:01:06,461 INFO L87 Difference]: Start difference. First operand 27633 states and 45120 transitions. Second operand has 4 states, 4 states have (on average 54.0) internal successors, (216), 3 states have internal predecessors, (216), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:01:12,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 07:01:12,824 INFO L93 Difference]: Finished difference Result 53121 states and 86671 transitions. [2023-04-02 07:01:12,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 07:01:12,825 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 54.0) internal successors, (216), 3 states have internal predecessors, (216), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 219 [2023-04-02 07:01:12,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 07:01:12,900 INFO L225 Difference]: With dead ends: 53121 [2023-04-02 07:01:12,900 INFO L226 Difference]: Without dead ends: 38871 [2023-04-02 07:01:12,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 07:01:12,941 INFO L413 NwaCegarLoop]: 1563 mSDtfsCounter, 333 mSDsluCounter, 1255 mSDsCounter, 0 mSdLazyCounter, 1569 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 2818 SdHoareTripleChecker+Invalid, 1573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-04-02 07:01:12,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [333 Valid, 2818 Invalid, 1573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1569 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-04-02 07:01:12,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38871 states. [2023-04-02 07:01:15,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38871 to 38869. [2023-04-02 07:01:15,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38869 states, 38865 states have (on average 1.6269908658175736) internal successors, (63233), 38865 states have internal predecessors, (63233), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:01:15,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38869 states to 38869 states and 63236 transitions. [2023-04-02 07:01:15,976 INFO L78 Accepts]: Start accepts. Automaton has 38869 states and 63236 transitions. Word has length 219 [2023-04-02 07:01:15,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 07:01:15,976 INFO L495 AbstractCegarLoop]: Abstraction has 38869 states and 63236 transitions. [2023-04-02 07:01:15,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.0) internal successors, (216), 3 states have internal predecessors, (216), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:01:15,977 INFO L276 IsEmpty]: Start isEmpty. Operand 38869 states and 63236 transitions. [2023-04-02 07:01:15,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2023-04-02 07:01:15,979 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 07:01:15,980 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 07:01:15,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-02 07:01:15,980 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 07:01:15,980 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 07:01:15,980 INFO L85 PathProgramCache]: Analyzing trace with hash 742424925, now seen corresponding path program 1 times [2023-04-02 07:01:15,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 07:01:15,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100556133] [2023-04-02 07:01:15,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 07:01:15,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 07:01:16,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:01:16,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 07:01:16,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:01:16,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 07:01:16,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 07:01:16,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100556133] [2023-04-02 07:01:16,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100556133] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 07:01:16,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 07:01:16,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 07:01:16,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294204272] [2023-04-02 07:01:16,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 07:01:16,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 07:01:16,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 07:01:16,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 07:01:16,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 07:01:16,706 INFO L87 Difference]: Start difference. First operand 38869 states and 63236 transitions. Second operand has 4 states, 4 states have (on average 54.0) internal successors, (216), 3 states have internal predecessors, (216), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:01:24,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 07:01:24,281 INFO L93 Difference]: Finished difference Result 74525 states and 121179 transitions. [2023-04-02 07:01:24,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 07:01:24,282 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 54.0) internal successors, (216), 3 states have internal predecessors, (216), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 219 [2023-04-02 07:01:24,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 07:01:24,394 INFO L225 Difference]: With dead ends: 74525 [2023-04-02 07:01:24,395 INFO L226 Difference]: Without dead ends: 54431 [2023-04-02 07:01:24,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 07:01:24,429 INFO L413 NwaCegarLoop]: 1519 mSDtfsCounter, 325 mSDsluCounter, 1256 mSDsCounter, 0 mSdLazyCounter, 1525 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 2775 SdHoareTripleChecker+Invalid, 1529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-04-02 07:01:24,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 2775 Invalid, 1529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1525 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-04-02 07:01:24,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54431 states. [2023-04-02 07:01:28,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54431 to 54429. [2023-04-02 07:01:28,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54429 states, 54425 states have (on average 1.620670647680294) internal successors, (88205), 54425 states have internal predecessors, (88205), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:01:28,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54429 states to 54429 states and 88208 transitions. [2023-04-02 07:01:28,897 INFO L78 Accepts]: Start accepts. Automaton has 54429 states and 88208 transitions. Word has length 219 [2023-04-02 07:01:28,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 07:01:28,897 INFO L495 AbstractCegarLoop]: Abstraction has 54429 states and 88208 transitions. [2023-04-02 07:01:28,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.0) internal successors, (216), 3 states have internal predecessors, (216), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:01:28,898 INFO L276 IsEmpty]: Start isEmpty. Operand 54429 states and 88208 transitions. [2023-04-02 07:01:28,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2023-04-02 07:01:28,900 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 07:01:28,900 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 07:01:28,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-02 07:01:28,903 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 07:01:28,903 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 07:01:28,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1240781453, now seen corresponding path program 1 times [2023-04-02 07:01:28,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 07:01:28,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182226218] [2023-04-02 07:01:28,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 07:01:28,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 07:01:28,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:01:29,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 07:01:29,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:01:29,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 07:01:29,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 07:01:29,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182226218] [2023-04-02 07:01:29,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182226218] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 07:01:29,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 07:01:29,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 07:01:29,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082610017] [2023-04-02 07:01:29,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 07:01:29,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 07:01:29,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 07:01:29,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 07:01:29,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 07:01:29,768 INFO L87 Difference]: Start difference. First operand 54429 states and 88208 transitions. Second operand has 4 states, 4 states have (on average 54.0) internal successors, (216), 3 states have internal predecessors, (216), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:01:39,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 07:01:39,318 INFO L93 Difference]: Finished difference Result 104057 states and 168559 transitions. [2023-04-02 07:01:39,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 07:01:39,319 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 54.0) internal successors, (216), 3 states have internal predecessors, (216), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 219 [2023-04-02 07:01:39,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 07:01:39,462 INFO L225 Difference]: With dead ends: 104057 [2023-04-02 07:01:39,462 INFO L226 Difference]: Without dead ends: 75837 [2023-04-02 07:01:39,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 07:01:39,501 INFO L413 NwaCegarLoop]: 1475 mSDtfsCounter, 317 mSDsluCounter, 1257 mSDsCounter, 0 mSdLazyCounter, 1481 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 2732 SdHoareTripleChecker+Invalid, 1485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-04-02 07:01:39,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [317 Valid, 2732 Invalid, 1485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1481 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-04-02 07:01:39,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75837 states. [2023-04-02 07:01:45,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75837 to 75835. [2023-04-02 07:01:45,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75835 states, 75831 states have (on average 1.6137331698118185) internal successors, (122371), 75831 states have internal predecessors, (122371), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:01:45,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75835 states to 75835 states and 122374 transitions. [2023-04-02 07:01:45,602 INFO L78 Accepts]: Start accepts. Automaton has 75835 states and 122374 transitions. Word has length 219 [2023-04-02 07:01:45,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 07:01:45,603 INFO L495 AbstractCegarLoop]: Abstraction has 75835 states and 122374 transitions. [2023-04-02 07:01:45,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.0) internal successors, (216), 3 states have internal predecessors, (216), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:01:45,603 INFO L276 IsEmpty]: Start isEmpty. Operand 75835 states and 122374 transitions. [2023-04-02 07:01:45,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2023-04-02 07:01:45,617 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 07:01:45,617 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 07:01:45,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-02 07:01:45,618 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 07:01:45,618 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 07:01:45,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1722811145, now seen corresponding path program 1 times [2023-04-02 07:01:45,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 07:01:45,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614079213] [2023-04-02 07:01:45,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 07:01:45,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 07:01:45,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:01:46,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 07:01:46,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:01:46,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 07:01:46,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 07:01:46,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614079213] [2023-04-02 07:01:46,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614079213] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 07:01:46,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 07:01:46,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 07:01:46,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430523938] [2023-04-02 07:01:46,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 07:01:46,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 07:01:46,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 07:01:46,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 07:01:46,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 07:01:46,287 INFO L87 Difference]: Start difference. First operand 75835 states and 122374 transitions. Second operand has 4 states, 4 states have (on average 54.0) internal successors, (216), 3 states have internal predecessors, (216), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:01:57,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 07:01:57,974 INFO L93 Difference]: Finished difference Result 144501 states and 233067 transitions. [2023-04-02 07:01:57,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 07:01:57,975 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 54.0) internal successors, (216), 3 states have internal predecessors, (216), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 219 [2023-04-02 07:01:57,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 07:01:58,229 INFO L225 Difference]: With dead ends: 144501 [2023-04-02 07:01:58,229 INFO L226 Difference]: Without dead ends: 105052 [2023-04-02 07:01:58,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 07:01:58,443 INFO L413 NwaCegarLoop]: 1431 mSDtfsCounter, 309 mSDsluCounter, 1258 mSDsCounter, 0 mSdLazyCounter, 1437 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 2689 SdHoareTripleChecker+Invalid, 1441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-04-02 07:01:58,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 2689 Invalid, 1441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1437 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-04-02 07:01:58,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105052 states. [2023-04-02 07:02:07,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105052 to 105050. [2023-04-02 07:02:07,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105050 states, 105046 states have (on average 1.6058964644060698) internal successors, (168693), 105046 states have internal predecessors, (168693), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:02:07,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105050 states to 105050 states and 168696 transitions. [2023-04-02 07:02:07,752 INFO L78 Accepts]: Start accepts. Automaton has 105050 states and 168696 transitions. Word has length 219 [2023-04-02 07:02:07,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 07:02:07,753 INFO L495 AbstractCegarLoop]: Abstraction has 105050 states and 168696 transitions. [2023-04-02 07:02:07,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.0) internal successors, (216), 3 states have internal predecessors, (216), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:02:07,754 INFO L276 IsEmpty]: Start isEmpty. Operand 105050 states and 168696 transitions. [2023-04-02 07:02:07,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2023-04-02 07:02:07,770 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 07:02:07,770 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 07:02:07,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-02 07:02:07,770 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 07:02:07,771 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 07:02:07,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1926135307, now seen corresponding path program 1 times [2023-04-02 07:02:07,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 07:02:07,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841274842] [2023-04-02 07:02:07,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 07:02:07,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 07:02:07,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:02:09,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 07:02:09,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:02:09,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 07:02:09,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 07:02:09,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841274842] [2023-04-02 07:02:09,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841274842] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 07:02:09,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 07:02:09,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 07:02:09,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127038103] [2023-04-02 07:02:09,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 07:02:09,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 07:02:09,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 07:02:09,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 07:02:09,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 07:02:09,173 INFO L87 Difference]: Start difference. First operand 105050 states and 168696 transitions. Second operand has 6 states, 6 states have (on average 37.5) internal successors, (225), 5 states have internal predecessors, (225), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:02:27,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 07:02:27,163 INFO L93 Difference]: Finished difference Result 173730 states and 277691 transitions. [2023-04-02 07:02:27,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 07:02:27,164 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 37.5) internal successors, (225), 5 states have internal predecessors, (225), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 228 [2023-04-02 07:02:27,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 07:02:27,701 INFO L225 Difference]: With dead ends: 173730 [2023-04-02 07:02:27,701 INFO L226 Difference]: Without dead ends: 173728 [2023-04-02 07:02:27,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-04-02 07:02:27,751 INFO L413 NwaCegarLoop]: 1549 mSDtfsCounter, 702 mSDsluCounter, 4175 mSDsCounter, 0 mSdLazyCounter, 1579 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 5724 SdHoareTripleChecker+Invalid, 1580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-04-02 07:02:27,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [702 Valid, 5724 Invalid, 1580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1579 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-04-02 07:02:27,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173728 states. [2023-04-02 07:02:38,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173728 to 106018. [2023-04-02 07:02:38,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106018 states, 106014 states have (on average 1.5980719527609561) internal successors, (169418), 106014 states have internal predecessors, (169418), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:02:39,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106018 states to 106018 states and 169421 transitions. [2023-04-02 07:02:39,188 INFO L78 Accepts]: Start accepts. Automaton has 106018 states and 169421 transitions. Word has length 228 [2023-04-02 07:02:39,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 07:02:39,189 INFO L495 AbstractCegarLoop]: Abstraction has 106018 states and 169421 transitions. [2023-04-02 07:02:39,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 37.5) internal successors, (225), 5 states have internal predecessors, (225), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:02:39,189 INFO L276 IsEmpty]: Start isEmpty. Operand 106018 states and 169421 transitions. [2023-04-02 07:02:39,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2023-04-02 07:02:39,199 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 07:02:39,199 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 07:02:39,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-02 07:02:39,204 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 07:02:39,204 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 07:02:39,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1521387430, now seen corresponding path program 1 times [2023-04-02 07:02:39,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 07:02:39,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170552624] [2023-04-02 07:02:39,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 07:02:39,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 07:02:39,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:02:40,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 07:02:40,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:02:40,087 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-02 07:02:40,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 07:02:40,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170552624] [2023-04-02 07:02:40,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170552624] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 07:02:40,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 07:02:40,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-02 07:02:40,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305780839] [2023-04-02 07:02:40,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 07:02:40,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 07:02:40,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 07:02:40,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 07:02:40,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-04-02 07:02:40,089 INFO L87 Difference]: Start difference. First operand 106018 states and 169421 transitions. Second operand has 8 states, 8 states have (on average 33.75) internal successors, (270), 7 states have internal predecessors, (270), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:03:25,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 07:03:25,804 INFO L93 Difference]: Finished difference Result 416082 states and 665175 transitions. [2023-04-02 07:03:25,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 07:03:25,805 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 33.75) internal successors, (270), 7 states have internal predecessors, (270), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 274 [2023-04-02 07:03:25,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 07:03:26,801 INFO L225 Difference]: With dead ends: 416082 [2023-04-02 07:03:26,802 INFO L226 Difference]: Without dead ends: 373528 [2023-04-02 07:03:26,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-04-02 07:03:26,936 INFO L413 NwaCegarLoop]: 1676 mSDtfsCounter, 2872 mSDsluCounter, 8415 mSDsCounter, 0 mSdLazyCounter, 1850 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2872 SdHoareTripleChecker+Valid, 10091 SdHoareTripleChecker+Invalid, 1863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-04-02 07:03:26,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2872 Valid, 10091 Invalid, 1863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1850 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-04-02 07:03:27,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373528 states.