/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_floodmax.4.2.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 01:43:17,473 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 01:43:17,474 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 01:43:17,494 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-03-31 01:43:17,500 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 01:43:17,500 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 01:43:17,501 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 01:43:17,502 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 01:43:17,502 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 01:43:17,503 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 01:43:17,504 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 01:43:17,505 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 01:43:17,506 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 01:43:17,506 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 01:43:17,507 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 01:43:17,508 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 01:43:17,510 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-03-31 01:43:17,514 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 01:43:17,515 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 01:43:17,515 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 01:43:17,516 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 [2023-03-31 01:43:17,529 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 01:43:17,529 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 01:43:17,529 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 01:43:17,529 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 01:43:17,530 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 01:43:17,530 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 01:43:17,530 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-31 01:43:17,530 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-31 01:43:17,530 INFO L138 SettingsManager]: * Use SBE=true [2023-03-31 01:43:17,531 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 01:43:17,531 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 01:43:17,531 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 01:43:17,531 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 01:43:17,531 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 01:43:17,531 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 01:43:17,531 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 01:43:17,531 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 01:43:17,532 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 01:43:17,532 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 01:43:17,532 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 01:43:17,532 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 01:43:17,532 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 01:43:17,532 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-31 01:43:17,532 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 01:43:17,532 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 01:43:17,533 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 01:43:17,533 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 01:43:17,533 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 01:43:17,533 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-31 01:43:17,533 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 01:43:17,533 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-31 01:43:17,533 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 01:43:17,533 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-31 01:43:17,533 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-31 01:43:17,534 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-31 01:43:17,534 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-31 01:43:17,660 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 01:43:17,673 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 01:43:17,675 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 01:43:17,676 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 01:43:17,676 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 01:43:17,677 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2023-03-31 01:43:18,701 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 01:43:18,999 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 01:43:18,999 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2023-03-31 01:43:19,007 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce8c6c743/e8ad2c7bb66e4c98bf04965ccafa0697/FLAG572ed5b26 [2023-03-31 01:43:19,024 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce8c6c743/e8ad2c7bb66e4c98bf04965ccafa0697 [2023-03-31 01:43:19,026 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 01:43:19,028 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 01:43:19,031 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 01:43:19,031 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 01:43:19,034 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 01:43:19,035 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 01:43:19" (1/1) ... [2023-03-31 01:43:19,036 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fbca683 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:43:19, skipping insertion in model container [2023-03-31 01:43:19,036 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 01:43:19" (1/1) ... [2023-03-31 01:43:19,040 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 01:43:19,087 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 01:43:19,268 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_floodmax.4.2.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c[12834,12847] [2023-03-31 01:43:19,333 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 01:43:19,360 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 01:43:19,410 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_floodmax.4.2.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c[12834,12847] [2023-03-31 01:43:19,443 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 01:43:19,456 INFO L208 MainTranslator]: Completed translation [2023-03-31 01:43:19,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:43:19 WrapperNode [2023-03-31 01:43:19,457 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 01:43:19,458 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 01:43:19,458 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 01:43:19,458 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 01:43:19,472 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:43:19" (1/1) ... [2023-03-31 01:43:19,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:43:19" (1/1) ... [2023-03-31 01:43:19,484 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:43:19" (1/1) ... [2023-03-31 01:43:19,484 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:43:19" (1/1) ... [2023-03-31 01:43:19,503 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:43:19" (1/1) ... [2023-03-31 01:43:19,514 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:43:19" (1/1) ... [2023-03-31 01:43:19,520 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:43:19" (1/1) ... [2023-03-31 01:43:19,524 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:43:19" (1/1) ... [2023-03-31 01:43:19,530 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 01:43:19,530 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 01:43:19,530 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 01:43:19,531 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 01:43:19,531 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:43:19" (1/1) ... [2023-03-31 01:43:19,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 01:43:19,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 01:43:19,569 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) [2023-03-31 01:43:19,587 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 [2023-03-31 01:43:19,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 01:43:19,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 01:43:19,618 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 01:43:19,618 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-03-31 01:43:19,618 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 01:43:19,618 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 01:43:19,618 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 01:43:19,618 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 01:43:19,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 01:43:19,618 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-03-31 01:43:19,618 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-03-31 01:43:19,619 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-03-31 01:43:19,619 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-03-31 01:43:19,619 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-03-31 01:43:19,619 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-03-31 01:43:19,619 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-03-31 01:43:19,619 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-03-31 01:43:19,619 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-03-31 01:43:19,619 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-03-31 01:43:19,619 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-03-31 01:43:19,620 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-03-31 01:43:19,620 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 01:43:19,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 01:43:19,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 01:43:19,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 01:43:19,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 01:43:19,620 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 01:43:19,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 01:43:19,772 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 01:43:19,774 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 01:43:20,498 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 01:43:20,504 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 01:43:20,504 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-03-31 01:43:20,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 01:43:20 BoogieIcfgContainer [2023-03-31 01:43:20,506 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 01:43:20,507 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 01:43:20,507 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 01:43:20,509 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 01:43:20,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 01:43:19" (1/3) ... [2023-03-31 01:43:20,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@454322a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 01:43:20, skipping insertion in model container [2023-03-31 01:43:20,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:43:19" (2/3) ... [2023-03-31 01:43:20,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@454322a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 01:43:20, skipping insertion in model container [2023-03-31 01:43:20,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 01:43:20" (3/3) ... [2023-03-31 01:43:20,511 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.2.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2023-03-31 01:43:20,522 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 01:43:20,522 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 01:43:20,556 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 01:43:20,561 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;@599f9ebb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-31 01:43:20,561 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 01:43:20,565 INFO L276 IsEmpty]: Start isEmpty. Operand has 331 states, 318 states have (on average 1.8018867924528301) internal successors, (573), 326 states have internal predecessors, (573), 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) [2023-03-31 01:43:20,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-03-31 01:43:20,576 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:43:20,576 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] [2023-03-31 01:43:20,577 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:43:20,580 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:43:20,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1268756873, now seen corresponding path program 1 times [2023-03-31 01:43:20,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:43:20,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100941118] [2023-03-31 01:43:20,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:43:20,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:43:20,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:43:21,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:43:21,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:43:21,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:43:21,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:43:21,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100941118] [2023-03-31 01:43:21,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100941118] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:43:21,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:43:21,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:43:21,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277723862] [2023-03-31 01:43:21,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:43:21,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:43:21,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:43:21,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:43:21,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:43:21,379 INFO L87 Difference]: Start difference. First operand has 331 states, 318 states have (on average 1.8018867924528301) internal successors, (573), 326 states have internal predecessors, (573), 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 28.0) internal successors, (112), 3 states have internal predecessors, (112), 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) [2023-03-31 01:43:22,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:43:22,910 INFO L93 Difference]: Finished difference Result 594 states and 998 transitions. [2023-03-31 01:43:22,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:43:22,912 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 3 states have internal predecessors, (112), 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 115 [2023-03-31 01:43:22,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:43:22,929 INFO L225 Difference]: With dead ends: 594 [2023-03-31 01:43:22,929 INFO L226 Difference]: Without dead ends: 435 [2023-03-31 01:43:22,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:43:22,937 INFO L413 NwaCegarLoop]: 576 mSDtfsCounter, 226 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 601 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 1072 SdHoareTripleChecker+Invalid, 607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-03-31 01:43:22,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 1072 Invalid, 607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 601 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-03-31 01:43:22,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2023-03-31 01:43:22,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 433. [2023-03-31 01:43:22,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 429 states have (on average 1.634032634032634) internal successors, (701), 429 states have internal predecessors, (701), 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) [2023-03-31 01:43:22,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 704 transitions. [2023-03-31 01:43:22,987 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 704 transitions. Word has length 115 [2023-03-31 01:43:22,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:43:22,987 INFO L495 AbstractCegarLoop]: Abstraction has 433 states and 704 transitions. [2023-03-31 01:43:22,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 3 states have internal predecessors, (112), 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) [2023-03-31 01:43:22,988 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 704 transitions. [2023-03-31 01:43:22,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-03-31 01:43:22,990 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:43:22,990 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] [2023-03-31 01:43:22,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 01:43:22,991 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:43:22,991 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:43:22,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1173486992, now seen corresponding path program 1 times [2023-03-31 01:43:22,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:43:22,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240570949] [2023-03-31 01:43:22,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:43:22,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:43:23,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:43:23,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:43:23,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:43:23,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:43:23,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:43:23,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240570949] [2023-03-31 01:43:23,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240570949] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:43:23,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:43:23,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:43:23,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319110513] [2023-03-31 01:43:23,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:43:23,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:43:23,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:43:23,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:43:23,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:43:23,379 INFO L87 Difference]: Start difference. First operand 433 states and 704 transitions. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 3 states have internal predecessors, (115), 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) [2023-03-31 01:43:24,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:43:24,510 INFO L93 Difference]: Finished difference Result 895 states and 1452 transitions. [2023-03-31 01:43:24,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:43:24,510 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 3 states have internal predecessors, (115), 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 118 [2023-03-31 01:43:24,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:43:24,515 INFO L225 Difference]: With dead ends: 895 [2023-03-31 01:43:24,515 INFO L226 Difference]: Without dead ends: 655 [2023-03-31 01:43:24,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:43:24,527 INFO L413 NwaCegarLoop]: 516 mSDtfsCounter, 183 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 995 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-03-31 01:43:24,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 995 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-03-31 01:43:24,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655 states. [2023-03-31 01:43:24,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655 to 653. [2023-03-31 01:43:24,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 653 states, 649 states have (on average 1.62557781201849) internal successors, (1055), 649 states have internal predecessors, (1055), 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) [2023-03-31 01:43:24,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 1058 transitions. [2023-03-31 01:43:24,573 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 1058 transitions. Word has length 118 [2023-03-31 01:43:24,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:43:24,574 INFO L495 AbstractCegarLoop]: Abstraction has 653 states and 1058 transitions. [2023-03-31 01:43:24,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 3 states have internal predecessors, (115), 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) [2023-03-31 01:43:24,574 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 1058 transitions. [2023-03-31 01:43:24,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-03-31 01:43:24,583 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:43:24,584 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] [2023-03-31 01:43:24,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 01:43:24,584 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:43:24,587 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:43:24,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1386080177, now seen corresponding path program 1 times [2023-03-31 01:43:24,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:43:24,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612488102] [2023-03-31 01:43:24,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:43:24,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:43:24,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:43:24,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:43:24,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:43:24,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:43:24,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:43:24,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612488102] [2023-03-31 01:43:24,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612488102] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:43:24,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:43:24,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:43:24,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381613943] [2023-03-31 01:43:24,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:43:24,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:43:24,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:43:24,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:43:24,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:43:24,985 INFO L87 Difference]: Start difference. First operand 653 states and 1058 transitions. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 3 states have internal predecessors, (118), 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) [2023-03-31 01:43:26,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:43:26,314 INFO L93 Difference]: Finished difference Result 1537 states and 2480 transitions. [2023-03-31 01:43:26,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:43:26,314 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 3 states have internal predecessors, (118), 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 121 [2023-03-31 01:43:26,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:43:26,318 INFO L225 Difference]: With dead ends: 1537 [2023-03-31 01:43:26,318 INFO L226 Difference]: Without dead ends: 1077 [2023-03-31 01:43:26,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:43:26,320 INFO L413 NwaCegarLoop]: 586 mSDtfsCounter, 177 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 1066 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-03-31 01:43:26,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 1066 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 597 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-03-31 01:43:26,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1077 states. [2023-03-31 01:43:26,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1077 to 1075. [2023-03-31 01:43:26,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1075 states, 1071 states have (on average 1.6125116713352008) internal successors, (1727), 1071 states have internal predecessors, (1727), 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) [2023-03-31 01:43:26,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 1730 transitions. [2023-03-31 01:43:26,355 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 1730 transitions. Word has length 121 [2023-03-31 01:43:26,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:43:26,355 INFO L495 AbstractCegarLoop]: Abstraction has 1075 states and 1730 transitions. [2023-03-31 01:43:26,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 3 states have internal predecessors, (118), 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) [2023-03-31 01:43:26,356 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 1730 transitions. [2023-03-31 01:43:26,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-03-31 01:43:26,357 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:43:26,357 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] [2023-03-31 01:43:26,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-31 01:43:26,357 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:43:26,358 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:43:26,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1332699236, now seen corresponding path program 1 times [2023-03-31 01:43:26,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:43:26,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107482456] [2023-03-31 01:43:26,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:43:26,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:43:26,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:43:26,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:43:26,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:43:26,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:43:26,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:43:26,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107482456] [2023-03-31 01:43:26,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107482456] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:43:26,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:43:26,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:43:26,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587881973] [2023-03-31 01:43:26,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:43:26,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:43:26,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:43:26,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:43:26,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:43:26,758 INFO L87 Difference]: Start difference. First operand 1075 states and 1730 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 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) [2023-03-31 01:43:28,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:43:28,158 INFO L93 Difference]: Finished difference Result 1977 states and 3188 transitions. [2023-03-31 01:43:28,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:43:28,158 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 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 124 [2023-03-31 01:43:28,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:43:28,163 INFO L225 Difference]: With dead ends: 1977 [2023-03-31 01:43:28,163 INFO L226 Difference]: Without dead ends: 1517 [2023-03-31 01:43:28,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:43:28,169 INFO L413 NwaCegarLoop]: 587 mSDtfsCounter, 178 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 593 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 1070 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-03-31 01:43:28,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 1070 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 593 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-03-31 01:43:28,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1517 states. [2023-03-31 01:43:28,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1517 to 1515. [2023-03-31 01:43:28,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1515 states, 1511 states have (on average 1.6088682991396426) internal successors, (2431), 1511 states have internal predecessors, (2431), 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) [2023-03-31 01:43:28,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1515 states to 1515 states and 2434 transitions. [2023-03-31 01:43:28,227 INFO L78 Accepts]: Start accepts. Automaton has 1515 states and 2434 transitions. Word has length 124 [2023-03-31 01:43:28,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:43:28,228 INFO L495 AbstractCegarLoop]: Abstraction has 1515 states and 2434 transitions. [2023-03-31 01:43:28,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 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) [2023-03-31 01:43:28,228 INFO L276 IsEmpty]: Start isEmpty. Operand 1515 states and 2434 transitions. [2023-03-31 01:43:28,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-03-31 01:43:28,229 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:43:28,229 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] [2023-03-31 01:43:28,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-03-31 01:43:28,229 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:43:28,230 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:43:28,230 INFO L85 PathProgramCache]: Analyzing trace with hash 196919210, now seen corresponding path program 1 times [2023-03-31 01:43:28,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:43:28,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556623889] [2023-03-31 01:43:28,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:43:28,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:43:28,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:43:28,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:43:28,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:43:28,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:43:28,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:43:28,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556623889] [2023-03-31 01:43:28,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556623889] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:43:28,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:43:28,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:43:28,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660024430] [2023-03-31 01:43:28,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:43:28,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:43:28,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:43:28,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:43:28,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:43:28,608 INFO L87 Difference]: Start difference. First operand 1515 states and 2434 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 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) [2023-03-31 01:43:29,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:43:29,852 INFO L93 Difference]: Finished difference Result 3879 states and 6192 transitions. [2023-03-31 01:43:29,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:43:29,853 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 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 124 [2023-03-31 01:43:29,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:43:29,860 INFO L225 Difference]: With dead ends: 3879 [2023-03-31 01:43:29,860 INFO L226 Difference]: Without dead ends: 2643 [2023-03-31 01:43:29,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:43:29,863 INFO L413 NwaCegarLoop]: 517 mSDtfsCounter, 171 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 998 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-03-31 01:43:29,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 998 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-03-31 01:43:29,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2643 states. [2023-03-31 01:43:29,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2643 to 2641. [2023-03-31 01:43:29,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2641 states, 2637 states have (on average 1.590822904816079) internal successors, (4195), 2637 states have internal predecessors, (4195), 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) [2023-03-31 01:43:29,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2641 states to 2641 states and 4198 transitions. [2023-03-31 01:43:29,988 INFO L78 Accepts]: Start accepts. Automaton has 2641 states and 4198 transitions. Word has length 124 [2023-03-31 01:43:29,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:43:29,988 INFO L495 AbstractCegarLoop]: Abstraction has 2641 states and 4198 transitions. [2023-03-31 01:43:29,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 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) [2023-03-31 01:43:29,988 INFO L276 IsEmpty]: Start isEmpty. Operand 2641 states and 4198 transitions. [2023-03-31 01:43:29,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-03-31 01:43:29,990 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:43:29,990 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] [2023-03-31 01:43:29,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-03-31 01:43:29,990 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:43:29,991 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:43:29,991 INFO L85 PathProgramCache]: Analyzing trace with hash -675213547, now seen corresponding path program 1 times [2023-03-31 01:43:29,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:43:29,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546298942] [2023-03-31 01:43:29,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:43:29,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:43:30,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:43:30,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:43:30,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:43:30,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:43:30,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:43:30,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546298942] [2023-03-31 01:43:30,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546298942] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:43:30,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:43:30,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-03-31 01:43:30,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421922782] [2023-03-31 01:43:30,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:43:30,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-03-31 01:43:30,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:43:30,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-03-31 01:43:30,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-03-31 01:43:30,468 INFO L87 Difference]: Start difference. First operand 2641 states and 4198 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 6 states have internal predecessors, (124), 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) [2023-03-31 01:43:32,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:43:32,436 INFO L93 Difference]: Finished difference Result 14257 states and 22814 transitions. [2023-03-31 01:43:32,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-03-31 01:43:32,437 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 6 states have internal predecessors, (124), 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 127 [2023-03-31 01:43:32,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:43:32,477 INFO L225 Difference]: With dead ends: 14257 [2023-03-31 01:43:32,477 INFO L226 Difference]: Without dead ends: 11857 [2023-03-31 01:43:32,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-03-31 01:43:32,486 INFO L413 NwaCegarLoop]: 555 mSDtfsCounter, 1905 mSDsluCounter, 3645 mSDsCounter, 0 mSdLazyCounter, 680 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1905 SdHoareTripleChecker+Valid, 4200 SdHoareTripleChecker+Invalid, 698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-03-31 01:43:32,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1905 Valid, 4200 Invalid, 698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 680 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-03-31 01:43:32,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11857 states. [2023-03-31 01:43:32,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11857 to 4823. [2023-03-31 01:43:32,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4823 states, 4819 states have (on average 1.5978418759078648) internal successors, (7700), 4819 states have internal predecessors, (7700), 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) [2023-03-31 01:43:32,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4823 states to 4823 states and 7703 transitions. [2023-03-31 01:43:32,942 INFO L78 Accepts]: Start accepts. Automaton has 4823 states and 7703 transitions. Word has length 127 [2023-03-31 01:43:32,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:43:32,943 INFO L495 AbstractCegarLoop]: Abstraction has 4823 states and 7703 transitions. [2023-03-31 01:43:32,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 6 states have internal predecessors, (124), 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) [2023-03-31 01:43:32,943 INFO L276 IsEmpty]: Start isEmpty. Operand 4823 states and 7703 transitions. [2023-03-31 01:43:32,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-03-31 01:43:32,945 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:43:32,945 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] [2023-03-31 01:43:32,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-03-31 01:43:32,945 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:43:32,945 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:43:32,945 INFO L85 PathProgramCache]: Analyzing trace with hash 477048230, now seen corresponding path program 1 times [2023-03-31 01:43:32,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:43:32,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086937431] [2023-03-31 01:43:32,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:43:32,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:43:32,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:43:33,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:43:33,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:43:33,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:43:33,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:43:33,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086937431] [2023-03-31 01:43:33,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086937431] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:43:33,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:43:33,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 01:43:33,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921094142] [2023-03-31 01:43:33,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:43:33,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-31 01:43:33,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:43:33,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-31 01:43:33,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:43:33,387 INFO L87 Difference]: Start difference. First operand 4823 states and 7703 transitions. Second operand has 5 states, 5 states have (on average 25.0) internal successors, (125), 4 states have internal predecessors, (125), 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) [2023-03-31 01:43:35,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:43:35,117 INFO L93 Difference]: Finished difference Result 14093 states and 22575 transitions. [2023-03-31 01:43:35,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-03-31 01:43:35,118 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 4 states have internal predecessors, (125), 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 128 [2023-03-31 01:43:35,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:43:35,150 INFO L225 Difference]: With dead ends: 14093 [2023-03-31 01:43:35,151 INFO L226 Difference]: Without dead ends: 9581 [2023-03-31 01:43:35,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-03-31 01:43:35,158 INFO L413 NwaCegarLoop]: 536 mSDtfsCounter, 599 mSDsluCounter, 1190 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 599 SdHoareTripleChecker+Valid, 1726 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-03-31 01:43:35,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [599 Valid, 1726 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-03-31 01:43:35,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9581 states. [2023-03-31 01:43:35,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9581 to 7181. [2023-03-31 01:43:35,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7181 states, 7177 states have (on average 1.5962101156472064) internal successors, (11456), 7177 states have internal predecessors, (11456), 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) [2023-03-31 01:43:35,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7181 states to 7181 states and 11459 transitions. [2023-03-31 01:43:35,705 INFO L78 Accepts]: Start accepts. Automaton has 7181 states and 11459 transitions. Word has length 128 [2023-03-31 01:43:35,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:43:35,705 INFO L495 AbstractCegarLoop]: Abstraction has 7181 states and 11459 transitions. [2023-03-31 01:43:35,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 4 states have internal predecessors, (125), 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) [2023-03-31 01:43:35,706 INFO L276 IsEmpty]: Start isEmpty. Operand 7181 states and 11459 transitions. [2023-03-31 01:43:35,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-03-31 01:43:35,707 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:43:35,708 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] [2023-03-31 01:43:35,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-03-31 01:43:35,708 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:43:35,708 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:43:35,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1858225642, now seen corresponding path program 1 times [2023-03-31 01:43:35,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:43:35,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804297927] [2023-03-31 01:43:35,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:43:35,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:43:35,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:43:36,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:43:36,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:43:36,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:43:36,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:43:36,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804297927] [2023-03-31 01:43:36,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804297927] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:43:36,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:43:36,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:43:36,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876359653] [2023-03-31 01:43:36,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:43:36,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:43:36,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:43:36,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:43:36,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:43:36,056 INFO L87 Difference]: Start difference. First operand 7181 states and 11459 transitions. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 3 states have internal predecessors, (125), 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) [2023-03-31 01:43:37,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:43:37,845 INFO L93 Difference]: Finished difference Result 13761 states and 21977 transitions. [2023-03-31 01:43:37,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:43:37,846 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 3 states have internal predecessors, (125), 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 128 [2023-03-31 01:43:37,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:43:37,863 INFO L225 Difference]: With dead ends: 13761 [2023-03-31 01:43:37,863 INFO L226 Difference]: Without dead ends: 10093 [2023-03-31 01:43:37,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:43:37,869 INFO L413 NwaCegarLoop]: 560 mSDtfsCounter, 172 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 1044 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-03-31 01:43:37,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 1044 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-03-31 01:43:37,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10093 states. [2023-03-31 01:43:38,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10093 to 10091. [2023-03-31 01:43:38,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10091 states, 10087 states have (on average 1.5877862595419847) internal successors, (16016), 10087 states have internal predecessors, (16016), 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) [2023-03-31 01:43:38,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10091 states to 10091 states and 16019 transitions. [2023-03-31 01:43:38,607 INFO L78 Accepts]: Start accepts. Automaton has 10091 states and 16019 transitions. Word has length 128 [2023-03-31 01:43:38,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:43:38,607 INFO L495 AbstractCegarLoop]: Abstraction has 10091 states and 16019 transitions. [2023-03-31 01:43:38,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 3 states have internal predecessors, (125), 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) [2023-03-31 01:43:38,608 INFO L276 IsEmpty]: Start isEmpty. Operand 10091 states and 16019 transitions. [2023-03-31 01:43:38,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-03-31 01:43:38,610 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:43:38,610 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] [2023-03-31 01:43:38,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-03-31 01:43:38,610 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:43:38,611 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:43:38,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1019110838, now seen corresponding path program 1 times [2023-03-31 01:43:38,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:43:38,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969746040] [2023-03-31 01:43:38,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:43:38,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:43:38,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:43:38,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:43:38,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:43:38,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:43:38,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:43:38,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969746040] [2023-03-31 01:43:38,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969746040] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:43:38,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:43:38,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:43:38,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138984433] [2023-03-31 01:43:38,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:43:38,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:43:38,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:43:38,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:43:38,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:43:38,939 INFO L87 Difference]: Start difference. First operand 10091 states and 16019 transitions. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 3 states have internal predecessors, (125), 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) [2023-03-31 01:43:41,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:43:41,003 INFO L93 Difference]: Finished difference Result 18915 states and 30079 transitions. [2023-03-31 01:43:41,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:43:41,003 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 3 states have internal predecessors, (125), 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 128 [2023-03-31 01:43:41,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:43:41,032 INFO L225 Difference]: With dead ends: 18915 [2023-03-31 01:43:41,032 INFO L226 Difference]: Without dead ends: 13649 [2023-03-31 01:43:41,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:43:41,043 INFO L413 NwaCegarLoop]: 632 mSDtfsCounter, 184 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 1114 SdHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-03-31 01:43:41,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 1114 Invalid, 642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-03-31 01:43:41,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13649 states. [2023-03-31 01:43:42,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13649 to 13647. [2023-03-31 01:43:42,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13647 states, 13643 states have (on average 1.5803708861687311) internal successors, (21561), 13643 states have internal predecessors, (21561), 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) [2023-03-31 01:43:42,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13647 states to 13647 states and 21564 transitions. [2023-03-31 01:43:42,180 INFO L78 Accepts]: Start accepts. Automaton has 13647 states and 21564 transitions. Word has length 128 [2023-03-31 01:43:42,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:43:42,181 INFO L495 AbstractCegarLoop]: Abstraction has 13647 states and 21564 transitions. [2023-03-31 01:43:42,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 3 states have internal predecessors, (125), 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) [2023-03-31 01:43:42,181 INFO L276 IsEmpty]: Start isEmpty. Operand 13647 states and 21564 transitions. [2023-03-31 01:43:42,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-03-31 01:43:42,182 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:43:42,182 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] [2023-03-31 01:43:42,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-03-31 01:43:42,183 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:43:42,183 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:43:42,183 INFO L85 PathProgramCache]: Analyzing trace with hash 638785338, now seen corresponding path program 1 times [2023-03-31 01:43:42,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:43:42,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386715008] [2023-03-31 01:43:42,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:43:42,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:43:42,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:43:42,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:43:42,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:43:42,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:43:42,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:43:42,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386715008] [2023-03-31 01:43:42,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386715008] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:43:42,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:43:42,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:43:42,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514728742] [2023-03-31 01:43:42,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:43:42,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:43:42,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:43:42,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:43:42,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:43:42,560 INFO L87 Difference]: Start difference. First operand 13647 states and 21564 transitions. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 3 states have internal predecessors, (125), 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) [2023-03-31 01:43:45,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:43:45,225 INFO L93 Difference]: Finished difference Result 29632 states and 46800 transitions. [2023-03-31 01:43:45,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:43:45,225 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 3 states have internal predecessors, (125), 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 128 [2023-03-31 01:43:45,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:43:45,258 INFO L225 Difference]: With dead ends: 29632 [2023-03-31 01:43:45,258 INFO L226 Difference]: Without dead ends: 20153 [2023-03-31 01:43:45,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:43:45,272 INFO L413 NwaCegarLoop]: 672 mSDtfsCounter, 190 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 1153 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-03-31 01:43:45,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 1153 Invalid, 682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 678 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-03-31 01:43:45,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20153 states. [2023-03-31 01:43:46,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20153 to 20151. [2023-03-31 01:43:46,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20151 states, 20147 states have (on average 1.5677272050429345) internal successors, (31585), 20147 states have internal predecessors, (31585), 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) [2023-03-31 01:43:46,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20151 states to 20151 states and 31588 transitions. [2023-03-31 01:43:46,979 INFO L78 Accepts]: Start accepts. Automaton has 20151 states and 31588 transitions. Word has length 128 [2023-03-31 01:43:46,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:43:46,979 INFO L495 AbstractCegarLoop]: Abstraction has 20151 states and 31588 transitions. [2023-03-31 01:43:46,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 3 states have internal predecessors, (125), 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) [2023-03-31 01:43:46,980 INFO L276 IsEmpty]: Start isEmpty. Operand 20151 states and 31588 transitions. [2023-03-31 01:43:46,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-03-31 01:43:46,981 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:43:46,981 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:43:46,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-03-31 01:43:46,981 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:43:46,981 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:43:46,981 INFO L85 PathProgramCache]: Analyzing trace with hash 244865680, now seen corresponding path program 1 times [2023-03-31 01:43:46,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:43:46,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097341411] [2023-03-31 01:43:46,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:43:46,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:43:47,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:43:47,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:43:47,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:43:47,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:43:47,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:43:47,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097341411] [2023-03-31 01:43:47,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097341411] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:43:47,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:43:47,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-03-31 01:43:47,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428312109] [2023-03-31 01:43:47,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:43:47,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 01:43:47,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:43:47,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 01:43:47,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 01:43:47,721 INFO L87 Difference]: Start difference. First operand 20151 states and 31588 transitions. Second operand has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 5 states have internal predecessors, (134), 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) [2023-03-31 01:43:51,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:43:51,156 INFO L93 Difference]: Finished difference Result 33503 states and 52183 transitions. [2023-03-31 01:43:51,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 01:43:51,157 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 5 states have internal predecessors, (134), 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 137 [2023-03-31 01:43:51,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:43:51,229 INFO L225 Difference]: With dead ends: 33503 [2023-03-31 01:43:51,229 INFO L226 Difference]: Without dead ends: 33501 [2023-03-31 01:43:51,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-03-31 01:43:51,242 INFO L413 NwaCegarLoop]: 641 mSDtfsCounter, 391 mSDsluCounter, 1676 mSDsCounter, 0 mSdLazyCounter, 671 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 2317 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 671 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-03-31 01:43:51,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [391 Valid, 2317 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 671 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-03-31 01:43:51,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33501 states. [2023-03-31 01:43:53,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33501 to 20471. [2023-03-31 01:43:53,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20471 states, 20467 states have (on average 1.5548932427810622) internal successors, (31824), 20467 states have internal predecessors, (31824), 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) [2023-03-31 01:43:53,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20471 states to 20471 states and 31827 transitions. [2023-03-31 01:43:53,396 INFO L78 Accepts]: Start accepts. Automaton has 20471 states and 31827 transitions. Word has length 137 [2023-03-31 01:43:53,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:43:53,396 INFO L495 AbstractCegarLoop]: Abstraction has 20471 states and 31827 transitions. [2023-03-31 01:43:53,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 5 states have internal predecessors, (134), 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) [2023-03-31 01:43:53,396 INFO L276 IsEmpty]: Start isEmpty. Operand 20471 states and 31827 transitions. [2023-03-31 01:43:53,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-03-31 01:43:53,406 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:43:53,406 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-03-31 01:43:53,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-03-31 01:43:53,406 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:43:53,407 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:43:53,407 INFO L85 PathProgramCache]: Analyzing trace with hash 139752640, now seen corresponding path program 1 times [2023-03-31 01:43:53,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:43:53,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220623654] [2023-03-31 01:43:53,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:43:53,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:43:53,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:43:53,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:43:53,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:43:53,859 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-03-31 01:43:53,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:43:53,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220623654] [2023-03-31 01:43:53,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220623654] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:43:53,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:43:53,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-03-31 01:43:53,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219908436] [2023-03-31 01:43:53,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:43:53,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-03-31 01:43:53,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:43:53,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-03-31 01:43:53,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-03-31 01:43:53,861 INFO L87 Difference]: Start difference. First operand 20471 states and 31827 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 6 states have internal predecessors, (151), 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) [2023-03-31 01:44:00,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:44:00,457 INFO L93 Difference]: Finished difference Result 71244 states and 110949 transitions. [2023-03-31 01:44:00,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-03-31 01:44:00,458 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 6 states have internal predecessors, (151), 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 167 [2023-03-31 01:44:00,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:44:00,636 INFO L225 Difference]: With dead ends: 71244 [2023-03-31 01:44:00,637 INFO L226 Difference]: Without dead ends: 57838 [2023-03-31 01:44:00,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-03-31 01:44:00,672 INFO L413 NwaCegarLoop]: 723 mSDtfsCounter, 1341 mSDsluCounter, 2153 mSDsCounter, 0 mSdLazyCounter, 823 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1341 SdHoareTripleChecker+Valid, 2876 SdHoareTripleChecker+Invalid, 833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-03-31 01:44:00,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1341 Valid, 2876 Invalid, 833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 823 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-03-31 01:44:00,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57838 states. [2023-03-31 01:44:04,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57838 to 34943. [2023-03-31 01:44:04,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34943 states, 34939 states have (on average 1.5516757777841381) internal successors, (54214), 34939 states have internal predecessors, (54214), 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) [2023-03-31 01:44:04,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34943 states to 34943 states and 54217 transitions. [2023-03-31 01:44:04,850 INFO L78 Accepts]: Start accepts. Automaton has 34943 states and 54217 transitions. Word has length 167 [2023-03-31 01:44:04,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:44:04,850 INFO L495 AbstractCegarLoop]: Abstraction has 34943 states and 54217 transitions. [2023-03-31 01:44:04,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 6 states have internal predecessors, (151), 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) [2023-03-31 01:44:04,851 INFO L276 IsEmpty]: Start isEmpty. Operand 34943 states and 54217 transitions. [2023-03-31 01:44:04,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-03-31 01:44:04,855 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:44:04,855 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:44:04,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-03-31 01:44:04,855 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:44:04,856 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:44:04,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1953169854, now seen corresponding path program 1 times [2023-03-31 01:44:04,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:44:04,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127515137] [2023-03-31 01:44:04,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:44:04,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:44:04,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:44:05,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:44:05,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:44:05,365 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-03-31 01:44:05,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:44:05,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127515137] [2023-03-31 01:44:05,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127515137] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:44:05,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:44:05,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-03-31 01:44:05,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941428954] [2023-03-31 01:44:05,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:44:05,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-03-31 01:44:05,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:44:05,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-03-31 01:44:05,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-03-31 01:44:05,367 INFO L87 Difference]: Start difference. First operand 34943 states and 54217 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 6 states have internal predecessors, (151), 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) [2023-03-31 01:44:13,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:44:13,941 INFO L93 Difference]: Finished difference Result 78868 states and 122817 transitions. [2023-03-31 01:44:13,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-03-31 01:44:13,942 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 6 states have internal predecessors, (151), 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 167 [2023-03-31 01:44:13,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:44:14,058 INFO L225 Difference]: With dead ends: 78868 [2023-03-31 01:44:14,059 INFO L226 Difference]: Without dead ends: 65462 [2023-03-31 01:44:14,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-03-31 01:44:14,093 INFO L413 NwaCegarLoop]: 723 mSDtfsCounter, 1218 mSDsluCounter, 2274 mSDsCounter, 0 mSdLazyCounter, 830 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1218 SdHoareTripleChecker+Valid, 2997 SdHoareTripleChecker+Invalid, 840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-03-31 01:44:14,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1218 Valid, 2997 Invalid, 840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 830 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-03-31 01:44:14,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65462 states. [2023-03-31 01:44:20,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65462 to 52865. [2023-03-31 01:44:20,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52865 states, 52861 states have (on average 1.5508976371994476) internal successors, (81982), 52861 states have internal predecessors, (81982), 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) [2023-03-31 01:44:20,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52865 states to 52865 states and 81985 transitions. [2023-03-31 01:44:20,222 INFO L78 Accepts]: Start accepts. Automaton has 52865 states and 81985 transitions. Word has length 167 [2023-03-31 01:44:20,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:44:20,222 INFO L495 AbstractCegarLoop]: Abstraction has 52865 states and 81985 transitions. [2023-03-31 01:44:20,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 6 states have internal predecessors, (151), 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) [2023-03-31 01:44:20,222 INFO L276 IsEmpty]: Start isEmpty. Operand 52865 states and 81985 transitions. [2023-03-31 01:44:20,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-03-31 01:44:20,226 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:44:20,226 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-03-31 01:44:20,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-03-31 01:44:20,226 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:44:20,226 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:44:20,226 INFO L85 PathProgramCache]: Analyzing trace with hash 835646716, now seen corresponding path program 1 times [2023-03-31 01:44:20,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:44:20,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717964027] [2023-03-31 01:44:20,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:44:20,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:44:20,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat