/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.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 05:48:19,009 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 05:48:19,012 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 05:48:19,048 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 05:48:19,048 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 05:48:19,051 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 05:48:19,054 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 05:48:19,057 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 05:48:19,058 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 05:48:19,063 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 05:48:19,064 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 05:48:19,066 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 05:48:19,066 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 05:48:19,070 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 05:48:19,071 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 05:48:19,072 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 05:48:19,073 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 05:48:19,074 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 05:48:19,075 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 05:48:19,080 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 05:48:19,081 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 05:48:19,082 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 05:48:19,083 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 05:48:19,084 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 05:48:19,092 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-02 05:48:19,099 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 05:48:19,100 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 05:48:19,100 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 05:48:19,102 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-04-02 05:48:19,132 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 05:48:19,132 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 05:48:19,133 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 05:48:19,133 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 05:48:19,134 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 05:48:19,134 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 05:48:19,134 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 05:48:19,135 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 05:48:19,135 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 05:48:19,135 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 05:48:19,136 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 05:48:19,136 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 05:48:19,136 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 05:48:19,136 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 05:48:19,136 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 05:48:19,136 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 05:48:19,136 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 05:48:19,136 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 05:48:19,136 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 05:48:19,137 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 05:48:19,137 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 05:48:19,137 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 05:48:19,137 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 05:48:19,137 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 05:48:19,137 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 05:48:19,137 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 05:48:19,137 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 05:48:19,138 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 05:48:19,138 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 05:48:19,138 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 05:48:19,138 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 05:48:19,138 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 05:48:19,139 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 05:48:19,139 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 05:48:19,139 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 05:48:19,139 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 05:48:19,382 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 05:48:19,406 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 05:48:19,408 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 05:48:19,409 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 05:48:19,410 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 05:48:19,411 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2023-04-02 05:48:20,556 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 05:48:20,815 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 05:48:20,815 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2023-04-02 05:48:20,838 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad320af69/0639658a71054c1ebf03cb960f955a3e/FLAGc47b1dba7 [2023-04-02 05:48:20,856 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad320af69/0639658a71054c1ebf03cb960f955a3e [2023-04-02 05:48:20,858 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 05:48:20,860 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 05:48:20,862 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 05:48:20,862 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 05:48:20,865 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 05:48:20,866 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 05:48:20" (1/1) ... [2023-04-02 05:48:20,867 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@119387d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:48:20, skipping insertion in model container [2023-04-02 05:48:20,867 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 05:48:20" (1/1) ... [2023-04-02 05:48:20,873 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 05:48:20,923 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 05:48:21,190 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.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[14417,14430] [2023-04-02 05:48:21,251 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 05:48:21,264 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 05:48:21,375 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.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[14417,14430] [2023-04-02 05:48:21,431 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 05:48:21,446 INFO L208 MainTranslator]: Completed translation [2023-04-02 05:48:21,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:48:21 WrapperNode [2023-04-02 05:48:21,451 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 05:48:21,452 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 05:48:21,452 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 05:48:21,452 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 05:48:21,462 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:48:21" (1/1) ... [2023-04-02 05:48:21,462 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:48:21" (1/1) ... [2023-04-02 05:48:21,478 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:48:21" (1/1) ... [2023-04-02 05:48:21,478 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:48:21" (1/1) ... [2023-04-02 05:48:21,517 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:48:21" (1/1) ... [2023-04-02 05:48:21,537 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:48:21" (1/1) ... [2023-04-02 05:48:21,545 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:48:21" (1/1) ... [2023-04-02 05:48:21,555 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:48:21" (1/1) ... [2023-04-02 05:48:21,573 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 05:48:21,574 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 05:48:21,574 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 05:48:21,574 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 05:48:21,575 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:48:21" (1/1) ... [2023-04-02 05:48:21,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 05:48:21,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:48:21,612 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-02 05:48:21,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-02 05:48:21,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 05:48:21,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 05:48:21,662 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 05:48:21,662 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 05:48:21,662 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 05:48:21,662 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 05:48:21,662 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 05:48:21,662 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 05:48:21,663 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 05:48:21,663 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-02 05:48:21,663 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2023-04-02 05:48:21,663 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-02 05:48:21,663 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-02 05:48:21,663 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 05:48:21,663 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-02 05:48:21,663 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-02 05:48:21,663 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-02 05:48:21,663 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-02 05:48:21,664 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-02 05:48:21,664 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-02 05:48:21,664 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-02 05:48:21,664 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 05:48:21,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 05:48:21,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 05:48:21,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 05:48:21,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 05:48:21,664 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 05:48:21,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 05:48:21,784 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 05:48:21,786 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 05:48:22,805 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 05:48:22,823 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 05:48:22,823 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-02 05:48:22,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 05:48:22 BoogieIcfgContainer [2023-04-02 05:48:22,827 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 05:48:22,830 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 05:48:22,830 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 05:48:22,833 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 05:48:22,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 05:48:20" (1/3) ... [2023-04-02 05:48:22,834 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@765f6596 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 05:48:22, skipping insertion in model container [2023-04-02 05:48:22,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:48:21" (2/3) ... [2023-04-02 05:48:22,834 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@765f6596 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 05:48:22, skipping insertion in model container [2023-04-02 05:48:22,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 05:48:22" (3/3) ... [2023-04-02 05:48:22,837 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2023-04-02 05:48:22,856 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 05:48:22,857 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 05:48:22,926 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 05:48:22,931 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;@647c33c1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 05:48:22,932 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 05:48:22,942 INFO L276 IsEmpty]: Start isEmpty. Operand has 325 states, 311 states have (on average 1.7781350482315113) internal successors, (553), 320 states have internal predecessors, (553), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 05:48:22,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-04-02 05:48:22,961 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:48:22,962 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:48:22,963 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:48:22,967 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:48:22,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1736874118, now seen corresponding path program 1 times [2023-04-02 05:48:22,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:48:22,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673081901] [2023-04-02 05:48:22,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:48:22,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:48:23,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:48:23,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:48:23,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:48:23,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:48:23,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:48:23,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673081901] [2023-04-02 05:48:23,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673081901] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:48:23,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:48:23,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 05:48:23,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99250182] [2023-04-02 05:48:23,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:48:23,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 05:48:23,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:48:23,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 05:48:23,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 05:48:23,902 INFO L87 Difference]: Start difference. First operand has 325 states, 311 states have (on average 1.7781350482315113) internal successors, (553), 320 states have internal predecessors, (553), 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 36.75) internal successors, (147), 3 states have internal predecessors, (147), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:48:25,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:48:25,369 INFO L93 Difference]: Finished difference Result 665 states and 1120 transitions. [2023-04-02 05:48:25,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 05:48:25,372 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 3 states have internal predecessors, (147), 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 150 [2023-04-02 05:48:25,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:48:25,384 INFO L225 Difference]: With dead ends: 665 [2023-04-02 05:48:25,385 INFO L226 Difference]: Without dead ends: 510 [2023-04-02 05:48:25,389 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 [2023-04-02 05:48:25,392 INFO L413 NwaCegarLoop]: 525 mSDtfsCounter, 376 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 929 SdHoareTripleChecker+Invalid, 625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-02 05:48:25,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [376 Valid, 929 Invalid, 625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 620 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-02 05:48:25,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2023-04-02 05:48:25,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 508. [2023-04-02 05:48:25,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 504 states have (on average 1.4563492063492063) internal successors, (734), 504 states have internal predecessors, (734), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:48:25,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 737 transitions. [2023-04-02 05:48:25,468 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 737 transitions. Word has length 150 [2023-04-02 05:48:25,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:48:25,468 INFO L495 AbstractCegarLoop]: Abstraction has 508 states and 737 transitions. [2023-04-02 05:48:25,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 3 states have internal predecessors, (147), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:48:25,469 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 737 transitions. [2023-04-02 05:48:25,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-04-02 05:48:25,472 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:48:25,476 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:48:25,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 05:48:25,476 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:48:25,477 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:48:25,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1652659086, now seen corresponding path program 1 times [2023-04-02 05:48:25,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:48:25,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389903625] [2023-04-02 05:48:25,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:48:25,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:48:25,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:48:25,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:48:25,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:48:25,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:48:25,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:48:25,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389903625] [2023-04-02 05:48:25,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389903625] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:48:25,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:48:25,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 05:48:25,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720732236] [2023-04-02 05:48:25,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:48:25,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 05:48:25,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:48:25,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 05:48:25,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 05:48:25,829 INFO L87 Difference]: Start difference. First operand 508 states and 737 transitions. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 3 states have internal predecessors, (147), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:48:26,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:48:26,851 INFO L93 Difference]: Finished difference Result 1064 states and 1574 transitions. [2023-04-02 05:48:26,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 05:48:26,852 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 3 states have internal predecessors, (147), 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 150 [2023-04-02 05:48:26,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:48:26,857 INFO L225 Difference]: With dead ends: 1064 [2023-04-02 05:48:26,857 INFO L226 Difference]: Without dead ends: 876 [2023-04-02 05:48:26,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 05:48:26,860 INFO L413 NwaCegarLoop]: 411 mSDtfsCounter, 267 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 05:48:26,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 716 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 505 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 05:48:26,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2023-04-02 05:48:26,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 874. [2023-04-02 05:48:26,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 874 states, 870 states have (on average 1.4620689655172414) internal successors, (1272), 870 states have internal predecessors, (1272), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:48:26,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 874 states to 874 states and 1275 transitions. [2023-04-02 05:48:26,913 INFO L78 Accepts]: Start accepts. Automaton has 874 states and 1275 transitions. Word has length 150 [2023-04-02 05:48:26,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:48:26,913 INFO L495 AbstractCegarLoop]: Abstraction has 874 states and 1275 transitions. [2023-04-02 05:48:26,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 3 states have internal predecessors, (147), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:48:26,914 INFO L276 IsEmpty]: Start isEmpty. Operand 874 states and 1275 transitions. [2023-04-02 05:48:26,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-04-02 05:48:26,918 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:48:26,918 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:48:26,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 05:48:26,918 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:48:26,919 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:48:26,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1446597260, now seen corresponding path program 1 times [2023-04-02 05:48:26,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:48:26,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842915117] [2023-04-02 05:48:26,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:48:26,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:48:27,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:48:27,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:48:27,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:48:27,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:48:27,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:48:27,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842915117] [2023-04-02 05:48:27,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842915117] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:48:27,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:48:27,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 05:48:27,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466288730] [2023-04-02 05:48:27,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:48:27,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 05:48:27,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:48:27,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 05:48:27,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-02 05:48:27,428 INFO L87 Difference]: Start difference. First operand 874 states and 1275 transitions. Second operand has 5 states, 5 states have (on average 29.4) internal successors, (147), 4 states have internal predecessors, (147), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:48:28,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:48:28,848 INFO L93 Difference]: Finished difference Result 2553 states and 3718 transitions. [2023-04-02 05:48:28,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 05:48:28,849 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.4) internal successors, (147), 4 states have internal predecessors, (147), 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 150 [2023-04-02 05:48:28,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:48:28,856 INFO L225 Difference]: With dead ends: 2553 [2023-04-02 05:48:28,856 INFO L226 Difference]: Without dead ends: 1692 [2023-04-02 05:48:28,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-02 05:48:28,860 INFO L413 NwaCegarLoop]: 756 mSDtfsCounter, 881 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 814 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 881 SdHoareTripleChecker+Valid, 1161 SdHoareTripleChecker+Invalid, 830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-02 05:48:28,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [881 Valid, 1161 Invalid, 830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 814 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-02 05:48:28,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1692 states. [2023-04-02 05:48:28,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1692 to 1690. [2023-04-02 05:48:28,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1690 states, 1686 states have (on average 1.4454329774614472) internal successors, (2437), 1686 states have internal predecessors, (2437), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:48:28,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1690 states to 1690 states and 2440 transitions. [2023-04-02 05:48:28,971 INFO L78 Accepts]: Start accepts. Automaton has 1690 states and 2440 transitions. Word has length 150 [2023-04-02 05:48:28,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:48:28,972 INFO L495 AbstractCegarLoop]: Abstraction has 1690 states and 2440 transitions. [2023-04-02 05:48:28,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.4) internal successors, (147), 4 states have internal predecessors, (147), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:48:28,972 INFO L276 IsEmpty]: Start isEmpty. Operand 1690 states and 2440 transitions. [2023-04-02 05:48:28,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-04-02 05:48:28,975 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:48:28,975 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:48:28,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 05:48:28,976 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:48:28,976 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:48:28,976 INFO L85 PathProgramCache]: Analyzing trace with hash -207084606, now seen corresponding path program 1 times [2023-04-02 05:48:28,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:48:28,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164886172] [2023-04-02 05:48:28,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:48:28,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:48:29,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:48:29,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:48:29,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:48:29,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:48:29,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:48:29,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164886172] [2023-04-02 05:48:29,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164886172] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:48:29,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:48:29,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 05:48:29,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850115120] [2023-04-02 05:48:29,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:48:29,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 05:48:29,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:48:29,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 05:48:29,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 05:48:29,237 INFO L87 Difference]: Start difference. First operand 1690 states and 2440 transitions. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:48:30,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:48:30,332 INFO L93 Difference]: Finished difference Result 5024 states and 7250 transitions. [2023-04-02 05:48:30,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 05:48:30,333 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 3 states have internal predecessors, (148), 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 151 [2023-04-02 05:48:30,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:48:30,346 INFO L225 Difference]: With dead ends: 5024 [2023-04-02 05:48:30,347 INFO L226 Difference]: Without dead ends: 3366 [2023-04-02 05:48:30,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 05:48:30,352 INFO L413 NwaCegarLoop]: 509 mSDtfsCounter, 430 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 430 SdHoareTripleChecker+Valid, 946 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-02 05:48:30,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [430 Valid, 946 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-02 05:48:30,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3366 states. [2023-04-02 05:48:30,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3366 to 1692. [2023-04-02 05:48:30,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1692 states, 1688 states have (on average 1.444905213270142) internal successors, (2439), 1688 states have internal predecessors, (2439), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:48:30,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1692 states to 1692 states and 2442 transitions. [2023-04-02 05:48:30,571 INFO L78 Accepts]: Start accepts. Automaton has 1692 states and 2442 transitions. Word has length 151 [2023-04-02 05:48:30,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:48:30,571 INFO L495 AbstractCegarLoop]: Abstraction has 1692 states and 2442 transitions. [2023-04-02 05:48:30,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:48:30,572 INFO L276 IsEmpty]: Start isEmpty. Operand 1692 states and 2442 transitions. [2023-04-02 05:48:30,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-04-02 05:48:30,575 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:48:30,576 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:48:30,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 05:48:30,576 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:48:30,577 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:48:30,577 INFO L85 PathProgramCache]: Analyzing trace with hash -691346123, now seen corresponding path program 1 times [2023-04-02 05:48:30,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:48:30,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580609524] [2023-04-02 05:48:30,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:48:30,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:48:30,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:48:31,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:48:31,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:48:31,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:48:31,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:48:31,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580609524] [2023-04-02 05:48:31,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580609524] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:48:31,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:48:31,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 05:48:31,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495930476] [2023-04-02 05:48:31,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:48:31,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 05:48:31,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:48:31,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 05:48:31,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-02 05:48:31,078 INFO L87 Difference]: Start difference. First operand 1692 states and 2442 transitions. Second operand has 5 states, 5 states have (on average 29.8) internal successors, (149), 4 states have internal predecessors, (149), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:48:32,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:48:32,747 INFO L93 Difference]: Finished difference Result 4920 states and 7078 transitions. [2023-04-02 05:48:32,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 05:48:32,748 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.8) internal successors, (149), 4 states have internal predecessors, (149), 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 152 [2023-04-02 05:48:32,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:48:32,760 INFO L225 Difference]: With dead ends: 4920 [2023-04-02 05:48:32,761 INFO L226 Difference]: Without dead ends: 3262 [2023-04-02 05:48:32,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-02 05:48:32,768 INFO L413 NwaCegarLoop]: 737 mSDtfsCounter, 865 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 795 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 1142 SdHoareTripleChecker+Invalid, 811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-02 05:48:32,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [865 Valid, 1142 Invalid, 811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 795 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-02 05:48:32,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3262 states. [2023-04-02 05:48:33,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3262 to 3260. [2023-04-02 05:48:33,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3260 states, 3256 states have (on average 1.4265970515970516) internal successors, (4645), 3256 states have internal predecessors, (4645), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:48:33,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3260 states to 3260 states and 4648 transitions. [2023-04-02 05:48:33,086 INFO L78 Accepts]: Start accepts. Automaton has 3260 states and 4648 transitions. Word has length 152 [2023-04-02 05:48:33,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:48:33,086 INFO L495 AbstractCegarLoop]: Abstraction has 3260 states and 4648 transitions. [2023-04-02 05:48:33,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.8) internal successors, (149), 4 states have internal predecessors, (149), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:48:33,086 INFO L276 IsEmpty]: Start isEmpty. Operand 3260 states and 4648 transitions. [2023-04-02 05:48:33,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-04-02 05:48:33,091 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:48:33,091 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:48:33,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-02 05:48:33,091 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:48:33,092 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:48:33,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1040393117, now seen corresponding path program 1 times [2023-04-02 05:48:33,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:48:33,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105099125] [2023-04-02 05:48:33,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:48:33,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:48:33,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:48:33,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:48:33,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:48:33,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:48:33,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:48:33,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105099125] [2023-04-02 05:48:33,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105099125] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:48:33,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:48:33,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 05:48:33,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812194595] [2023-04-02 05:48:33,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:48:33,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 05:48:33,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:48:33,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 05:48:33,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 05:48:33,366 INFO L87 Difference]: Start difference. First operand 3260 states and 4648 transitions. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:48:35,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:48:35,359 INFO L93 Difference]: Finished difference Result 9696 states and 13816 transitions. [2023-04-02 05:48:35,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 05:48:35,360 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 3 states have internal predecessors, (150), 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 153 [2023-04-02 05:48:35,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:48:35,383 INFO L225 Difference]: With dead ends: 9696 [2023-04-02 05:48:35,383 INFO L226 Difference]: Without dead ends: 6484 [2023-04-02 05:48:35,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 05:48:35,393 INFO L413 NwaCegarLoop]: 856 mSDtfsCounter, 416 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 862 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 1293 SdHoareTripleChecker+Invalid, 864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-04-02 05:48:35,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [416 Valid, 1293 Invalid, 864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 862 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-02 05:48:35,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6484 states. [2023-04-02 05:48:35,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6484 to 3264. [2023-04-02 05:48:35,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3264 states, 3260 states have (on average 1.426073619631902) internal successors, (4649), 3260 states have internal predecessors, (4649), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:48:35,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3264 states to 3264 states and 4652 transitions. [2023-04-02 05:48:35,785 INFO L78 Accepts]: Start accepts. Automaton has 3264 states and 4652 transitions. Word has length 153 [2023-04-02 05:48:35,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:48:35,786 INFO L495 AbstractCegarLoop]: Abstraction has 3264 states and 4652 transitions. [2023-04-02 05:48:35,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:48:35,787 INFO L276 IsEmpty]: Start isEmpty. Operand 3264 states and 4652 transitions. [2023-04-02 05:48:35,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-04-02 05:48:35,791 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:48:35,791 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:48:35,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-02 05:48:35,792 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:48:35,792 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:48:35,792 INFO L85 PathProgramCache]: Analyzing trace with hash -321253433, now seen corresponding path program 1 times [2023-04-02 05:48:35,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:48:35,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199092706] [2023-04-02 05:48:35,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:48:35,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:48:35,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:48:36,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:48:36,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:48:36,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:48:36,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:48:36,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199092706] [2023-04-02 05:48:36,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199092706] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:48:36,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:48:36,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 05:48:36,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687249712] [2023-04-02 05:48:36,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:48:36,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 05:48:36,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:48:36,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 05:48:36,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 05:48:36,091 INFO L87 Difference]: Start difference. First operand 3264 states and 4652 transitions. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 3 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) [2023-04-02 05:48:38,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:48:38,016 INFO L93 Difference]: Finished difference Result 8611 states and 12267 transitions. [2023-04-02 05:48:38,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 05:48:38,017 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 3 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 154 [2023-04-02 05:48:38,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:48:38,038 INFO L225 Difference]: With dead ends: 8611 [2023-04-02 05:48:38,038 INFO L226 Difference]: Without dead ends: 5655 [2023-04-02 05:48:38,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 05:48:38,050 INFO L413 NwaCegarLoop]: 810 mSDtfsCounter, 361 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 831 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 1217 SdHoareTripleChecker+Invalid, 843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-02 05:48:38,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 1217 Invalid, 843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 831 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-02 05:48:38,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5655 states. [2023-04-02 05:48:38,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5655 to 5653. [2023-04-02 05:48:38,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5653 states, 5649 states have (on average 1.404496371039122) internal successors, (7934), 5649 states have internal predecessors, (7934), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:48:38,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5653 states to 5653 states and 7937 transitions. [2023-04-02 05:48:38,730 INFO L78 Accepts]: Start accepts. Automaton has 5653 states and 7937 transitions. Word has length 154 [2023-04-02 05:48:38,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:48:38,730 INFO L495 AbstractCegarLoop]: Abstraction has 5653 states and 7937 transitions. [2023-04-02 05:48:38,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 3 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) [2023-04-02 05:48:38,731 INFO L276 IsEmpty]: Start isEmpty. Operand 5653 states and 7937 transitions. [2023-04-02 05:48:38,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-04-02 05:48:38,740 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:48:38,740 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:48:38,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-02 05:48:38,740 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:48:38,741 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:48:38,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1852821532, now seen corresponding path program 1 times [2023-04-02 05:48:38,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:48:38,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193489149] [2023-04-02 05:48:38,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:48:38,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:48:38,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:48:39,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:48:39,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:48:39,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:48:39,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:48:39,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193489149] [2023-04-02 05:48:39,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193489149] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:48:39,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:48:39,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 05:48:39,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100071233] [2023-04-02 05:48:39,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:48:39,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 05:48:39,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:48:39,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 05:48:39,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-02 05:48:39,258 INFO L87 Difference]: Start difference. First operand 5653 states and 7937 transitions. Second operand has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 5 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) [2023-04-02 05:48:41,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:48:41,287 INFO L93 Difference]: Finished difference Result 16287 states and 22828 transitions. [2023-04-02 05:48:41,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 05:48:41,289 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 5 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 154 [2023-04-02 05:48:41,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:48:41,324 INFO L225 Difference]: With dead ends: 16287 [2023-04-02 05:48:41,324 INFO L226 Difference]: Without dead ends: 10675 [2023-04-02 05:48:41,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-02 05:48:41,338 INFO L413 NwaCegarLoop]: 733 mSDtfsCounter, 908 mSDsluCounter, 800 mSDsCounter, 0 mSdLazyCounter, 805 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 908 SdHoareTripleChecker+Valid, 1533 SdHoareTripleChecker+Invalid, 821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-02 05:48:41,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [908 Valid, 1533 Invalid, 821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 805 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-02 05:48:41,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10675 states. [2023-04-02 05:48:42,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10675 to 10673. [2023-04-02 05:48:42,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10673 states, 10669 states have (on average 1.3865404442778142) internal successors, (14793), 10669 states have internal predecessors, (14793), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:48:42,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10673 states to 10673 states and 14796 transitions. [2023-04-02 05:48:42,480 INFO L78 Accepts]: Start accepts. Automaton has 10673 states and 14796 transitions. Word has length 154 [2023-04-02 05:48:42,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:48:42,480 INFO L495 AbstractCegarLoop]: Abstraction has 10673 states and 14796 transitions. [2023-04-02 05:48:42,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 5 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) [2023-04-02 05:48:42,481 INFO L276 IsEmpty]: Start isEmpty. Operand 10673 states and 14796 transitions. [2023-04-02 05:48:42,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-04-02 05:48:42,499 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:48:42,499 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:48:42,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-02 05:48:42,499 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:48:42,500 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:48:42,500 INFO L85 PathProgramCache]: Analyzing trace with hash -756317834, now seen corresponding path program 1 times [2023-04-02 05:48:42,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:48:42,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831075609] [2023-04-02 05:48:42,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:48:42,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:48:42,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:48:42,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:48:42,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:48:42,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:48:42,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:48:42,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831075609] [2023-04-02 05:48:42,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831075609] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:48:42,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:48:42,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 05:48:42,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329710904] [2023-04-02 05:48:42,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:48:42,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 05:48:42,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:48:42,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 05:48:42,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-02 05:48:42,932 INFO L87 Difference]: Start difference. First operand 10673 states and 14796 transitions. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 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) [2023-04-02 05:48:44,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:48:44,938 INFO L93 Difference]: Finished difference Result 21569 states and 29818 transitions. [2023-04-02 05:48:44,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 05:48:44,938 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 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 154 [2023-04-02 05:48:44,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:48:44,962 INFO L225 Difference]: With dead ends: 21569 [2023-04-02 05:48:44,963 INFO L226 Difference]: Without dead ends: 11017 [2023-04-02 05:48:44,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-02 05:48:44,985 INFO L413 NwaCegarLoop]: 719 mSDtfsCounter, 856 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 856 SdHoareTripleChecker+Valid, 1124 SdHoareTripleChecker+Invalid, 790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-02 05:48:44,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [856 Valid, 1124 Invalid, 790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 779 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-02 05:48:44,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11017 states. [2023-04-02 05:48:45,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11017 to 10877. [2023-04-02 05:48:45,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10877 states, 10873 states have (on average 1.381127563689874) internal successors, (15017), 10873 states have internal predecessors, (15017), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:48:46,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10877 states to 10877 states and 15020 transitions. [2023-04-02 05:48:46,019 INFO L78 Accepts]: Start accepts. Automaton has 10877 states and 15020 transitions. Word has length 154 [2023-04-02 05:48:46,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:48:46,019 INFO L495 AbstractCegarLoop]: Abstraction has 10877 states and 15020 transitions. [2023-04-02 05:48:46,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 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) [2023-04-02 05:48:46,020 INFO L276 IsEmpty]: Start isEmpty. Operand 10877 states and 15020 transitions. [2023-04-02 05:48:46,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-04-02 05:48:46,035 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:48:46,035 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:48:46,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-02 05:48:46,035 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:48:46,036 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:48:46,036 INFO L85 PathProgramCache]: Analyzing trace with hash -2053475964, now seen corresponding path program 1 times [2023-04-02 05:48:46,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:48:46,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940916311] [2023-04-02 05:48:46,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:48:46,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:48:46,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:48:46,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:48:46,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:48:46,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:48:46,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:48:46,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940916311] [2023-04-02 05:48:46,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940916311] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:48:46,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:48:46,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 05:48:46,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860435520] [2023-04-02 05:48:46,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:48:46,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 05:48:46,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:48:46,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 05:48:46,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 05:48:46,277 INFO L87 Difference]: Start difference. First operand 10877 states and 15020 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:48:48,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:48:48,813 INFO L93 Difference]: Finished difference Result 31941 states and 44182 transitions. [2023-04-02 05:48:48,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 05:48:48,817 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 3 states have internal predecessors, (152), 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 155 [2023-04-02 05:48:48,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:48:48,864 INFO L225 Difference]: With dead ends: 31941 [2023-04-02 05:48:48,864 INFO L226 Difference]: Without dead ends: 21625 [2023-04-02 05:48:48,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 05:48:48,889 INFO L413 NwaCegarLoop]: 520 mSDtfsCounter, 402 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 957 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 05:48:48,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [402 Valid, 957 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 05:48:48,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21625 states. [2023-04-02 05:48:50,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21625 to 10893. [2023-04-02 05:48:50,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10893 states, 10889 states have (on average 1.3805675452291304) internal successors, (15033), 10889 states have internal predecessors, (15033), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:48:50,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10893 states to 10893 states and 15036 transitions. [2023-04-02 05:48:50,105 INFO L78 Accepts]: Start accepts. Automaton has 10893 states and 15036 transitions. Word has length 155 [2023-04-02 05:48:50,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:48:50,105 INFO L495 AbstractCegarLoop]: Abstraction has 10893 states and 15036 transitions. [2023-04-02 05:48:50,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:48:50,106 INFO L276 IsEmpty]: Start isEmpty. Operand 10893 states and 15036 transitions. [2023-04-02 05:48:50,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-04-02 05:48:50,121 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:48:50,121 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:48:50,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-02 05:48:50,122 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:48:50,122 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:48:50,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1262501321, now seen corresponding path program 1 times [2023-04-02 05:48:50,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:48:50,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950061028] [2023-04-02 05:48:50,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:48:50,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:48:50,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:48:50,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:48:50,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:48:50,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:48:50,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:48:50,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950061028] [2023-04-02 05:48:50,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950061028] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:48:50,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:48:50,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 05:48:50,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024047921] [2023-04-02 05:48:50,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:48:50,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 05:48:50,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:48:50,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 05:48:50,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-02 05:48:50,547 INFO L87 Difference]: Start difference. First operand 10893 states and 15036 transitions. Second operand has 5 states, 5 states have (on average 30.6) internal successors, (153), 4 states have internal predecessors, (153), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:48:52,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:48:52,136 INFO L93 Difference]: Finished difference Result 21772 states and 30054 transitions. [2023-04-02 05:48:52,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 05:48:52,141 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 4 states have internal predecessors, (153), 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 156 [2023-04-02 05:48:52,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:48:52,163 INFO L225 Difference]: With dead ends: 21772 [2023-04-02 05:48:52,164 INFO L226 Difference]: Without dead ends: 10891 [2023-04-02 05:48:52,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-02 05:48:52,187 INFO L413 NwaCegarLoop]: 485 mSDtfsCounter, 65 mSDsluCounter, 881 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1366 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 05:48:52,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 1366 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 05:48:52,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10891 states. [2023-04-02 05:48:53,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10891 to 10891. [2023-04-02 05:48:53,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10891 states, 10887 states have (on average 1.3804537521815008) internal successors, (15029), 10887 states have internal predecessors, (15029), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:48:53,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10891 states to 10891 states and 15032 transitions. [2023-04-02 05:48:53,527 INFO L78 Accepts]: Start accepts. Automaton has 10891 states and 15032 transitions. Word has length 156 [2023-04-02 05:48:53,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:48:53,528 INFO L495 AbstractCegarLoop]: Abstraction has 10891 states and 15032 transitions. [2023-04-02 05:48:53,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 4 states have internal predecessors, (153), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:48:53,528 INFO L276 IsEmpty]: Start isEmpty. Operand 10891 states and 15032 transitions. [2023-04-02 05:48:53,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-04-02 05:48:53,549 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:48:53,549 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:48:53,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-02 05:48:53,549 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:48:53,550 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:48:53,550 INFO L85 PathProgramCache]: Analyzing trace with hash 934693220, now seen corresponding path program 1 times [2023-04-02 05:48:53,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:48:53,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219100642] [2023-04-02 05:48:53,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:48:53,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:48:53,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:48:53,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:48:53,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:48:53,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:48:53,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:48:53,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219100642] [2023-04-02 05:48:53,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219100642] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:48:53,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:48:53,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 05:48:53,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882176736] [2023-04-02 05:48:53,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:48:53,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 05:48:53,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:48:53,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 05:48:53,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 05:48:53,827 INFO L87 Difference]: Start difference. First operand 10891 states and 15032 transitions. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 3 states have internal predecessors, (153), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:48:56,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:48:56,337 INFO L93 Difference]: Finished difference Result 25958 states and 35883 transitions. [2023-04-02 05:48:56,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 05:48:56,338 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 3 states have internal predecessors, (153), 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 156 [2023-04-02 05:48:56,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:48:56,367 INFO L225 Difference]: With dead ends: 25958 [2023-04-02 05:48:56,367 INFO L226 Difference]: Without dead ends: 16170 [2023-04-02 05:48:56,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 05:48:56,386 INFO L413 NwaCegarLoop]: 744 mSDtfsCounter, 367 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 764 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 1142 SdHoareTripleChecker+Invalid, 776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-02 05:48:56,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [367 Valid, 1142 Invalid, 776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 764 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-02 05:48:56,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16170 states. [2023-04-02 05:48:57,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16170 to 16168. [2023-04-02 05:48:58,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16168 states, 16164 states have (on average 1.3573372927493195) internal successors, (21940), 16164 states have internal predecessors, (21940), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:48:58,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16168 states to 16168 states and 21943 transitions. [2023-04-02 05:48:58,044 INFO L78 Accepts]: Start accepts. Automaton has 16168 states and 21943 transitions. Word has length 156 [2023-04-02 05:48:58,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:48:58,044 INFO L495 AbstractCegarLoop]: Abstraction has 16168 states and 21943 transitions. [2023-04-02 05:48:58,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 3 states have internal predecessors, (153), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:48:58,045 INFO L276 IsEmpty]: Start isEmpty. Operand 16168 states and 21943 transitions. [2023-04-02 05:48:58,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-04-02 05:48:58,064 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:48:58,064 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:48:58,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-02 05:48:58,064 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:48:58,064 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:48:58,065 INFO L85 PathProgramCache]: Analyzing trace with hash 577028737, now seen corresponding path program 1 times [2023-04-02 05:48:58,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:48:58,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372894906] [2023-04-02 05:48:58,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:48:58,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:48:58,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:48:58,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:48:58,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:48:58,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:48:58,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:48:58,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372894906] [2023-04-02 05:48:58,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372894906] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:48:58,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:48:58,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 05:48:58,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754660853] [2023-04-02 05:48:58,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:48:58,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 05:48:58,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:48:58,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 05:48:58,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-04-02 05:48:58,680 INFO L87 Difference]: Start difference. First operand 16168 states and 21943 transitions. Second operand has 5 states, 5 states have (on average 31.8) internal successors, (159), 4 states have internal predecessors, (159), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:49:02,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:49:02,293 INFO L93 Difference]: Finished difference Result 37730 states and 52537 transitions. [2023-04-02 05:49:02,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-02 05:49:02,294 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.8) internal successors, (159), 4 states have internal predecessors, (159), 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 162 [2023-04-02 05:49:02,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:49:02,344 INFO L225 Difference]: With dead ends: 37730 [2023-04-02 05:49:02,344 INFO L226 Difference]: Without dead ends: 30052 [2023-04-02 05:49:02,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-04-02 05:49:02,361 INFO L413 NwaCegarLoop]: 458 mSDtfsCounter, 716 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 716 SdHoareTripleChecker+Valid, 860 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 05:49:02,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [716 Valid, 860 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 573 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 05:49:02,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30052 states. [2023-04-02 05:49:05,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30052 to 30050. [2023-04-02 05:49:05,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30050 states, 30046 states have (on average 1.3631764627571057) internal successors, (40958), 30046 states have internal predecessors, (40958), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:49:05,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30050 states to 30050 states and 40961 transitions. [2023-04-02 05:49:05,666 INFO L78 Accepts]: Start accepts. Automaton has 30050 states and 40961 transitions. Word has length 162 [2023-04-02 05:49:05,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:49:05,667 INFO L495 AbstractCegarLoop]: Abstraction has 30050 states and 40961 transitions. [2023-04-02 05:49:05,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.8) internal successors, (159), 4 states have internal predecessors, (159), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:49:05,667 INFO L276 IsEmpty]: Start isEmpty. Operand 30050 states and 40961 transitions. [2023-04-02 05:49:05,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-04-02 05:49:05,704 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:49:05,704 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:49:05,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-02 05:49:05,705 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:49:05,705 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:49:05,705 INFO L85 PathProgramCache]: Analyzing trace with hash 203355550, now seen corresponding path program 1 times [2023-04-02 05:49:05,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:49:05,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671787219] [2023-04-02 05:49:05,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:49:05,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:49:05,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:49:06,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:49:06,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:49:06,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:49:06,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:49:06,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671787219] [2023-04-02 05:49:06,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671787219] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:49:06,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:49:06,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 05:49:06,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499265671] [2023-04-02 05:49:06,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:49:06,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 05:49:06,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:49:06,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 05:49:06,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-02 05:49:06,124 INFO L87 Difference]: Start difference. First operand 30050 states and 40961 transitions. Second operand has 5 states, 5 states have (on average 31.8) internal successors, (159), 4 states have internal predecessors, (159), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:49:12,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:49:12,545 INFO L93 Difference]: Finished difference Result 73861 states and 100489 transitions. [2023-04-02 05:49:12,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 05:49:12,546 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.8) internal successors, (159), 4 states have internal predecessors, (159), 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 162 [2023-04-02 05:49:12,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:49:12,608 INFO L225 Difference]: With dead ends: 73861 [2023-04-02 05:49:12,608 INFO L226 Difference]: Without dead ends: 44133 [2023-04-02 05:49:12,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-02 05:49:12,635 INFO L413 NwaCegarLoop]: 703 mSDtfsCounter, 907 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 760 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 907 SdHoareTripleChecker+Valid, 1100 SdHoareTripleChecker+Invalid, 776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-02 05:49:12,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [907 Valid, 1100 Invalid, 776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 760 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-02 05:49:12,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44133 states. [2023-04-02 05:49:17,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44133 to 44131. [2023-04-02 05:49:17,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44131 states, 44127 states have (on average 1.33979196410361) internal successors, (59121), 44127 states have internal predecessors, (59121), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:49:18,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44131 states to 44131 states and 59124 transitions. [2023-04-02 05:49:18,059 INFO L78 Accepts]: Start accepts. Automaton has 44131 states and 59124 transitions. Word has length 162 [2023-04-02 05:49:18,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:49:18,059 INFO L495 AbstractCegarLoop]: Abstraction has 44131 states and 59124 transitions. [2023-04-02 05:49:18,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.8) internal successors, (159), 4 states have internal predecessors, (159), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:49:18,059 INFO L276 IsEmpty]: Start isEmpty. Operand 44131 states and 59124 transitions. [2023-04-02 05:49:18,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-04-02 05:49:18,093 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:49:18,093 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:49:18,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-04-02 05:49:18,094 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:49:18,094 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:49:18,094 INFO L85 PathProgramCache]: Analyzing trace with hash 179517595, now seen corresponding path program 1 times [2023-04-02 05:49:18,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:49:18,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686448430] [2023-04-02 05:49:18,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:49:18,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:49:18,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:49:18,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:49:18,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:49:18,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:49:18,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:49:18,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686448430] [2023-04-02 05:49:18,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686448430] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:49:18,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:49:18,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 05:49:18,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19705135] [2023-04-02 05:49:18,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:49:18,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 05:49:18,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:49:18,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 05:49:18,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-02 05:49:18,663 INFO L87 Difference]: Start difference. First operand 44131 states and 59124 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:49:24,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:49:24,345 INFO L93 Difference]: Finished difference Result 73067 states and 97986 transitions. [2023-04-02 05:49:24,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 05:49:24,345 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 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 164 [2023-04-02 05:49:24,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:49:24,397 INFO L225 Difference]: With dead ends: 73067 [2023-04-02 05:49:24,397 INFO L226 Difference]: Without dead ends: 39353 [2023-04-02 05:49:24,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-02 05:49:24,434 INFO L413 NwaCegarLoop]: 476 mSDtfsCounter, 53 mSDsluCounter, 874 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 1350 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 05:49:24,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 1350 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 487 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 05:49:24,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39353 states. [2023-04-02 05:49:28,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39353 to 39353. [2023-04-02 05:49:28,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39353 states, 39349 states have (on average 1.3395003684972935) internal successors, (52708), 39349 states have internal predecessors, (52708), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:49:29,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39353 states to 39353 states and 52711 transitions. [2023-04-02 05:49:29,046 INFO L78 Accepts]: Start accepts. Automaton has 39353 states and 52711 transitions. Word has length 164 [2023-04-02 05:49:29,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:49:29,046 INFO L495 AbstractCegarLoop]: Abstraction has 39353 states and 52711 transitions. [2023-04-02 05:49:29,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:49:29,046 INFO L276 IsEmpty]: Start isEmpty. Operand 39353 states and 52711 transitions. [2023-04-02 05:49:29,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2023-04-02 05:49:29,072 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:49:29,073 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:49:29,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-04-02 05:49:29,073 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:49:29,074 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:49:29,074 INFO L85 PathProgramCache]: Analyzing trace with hash -130444393, now seen corresponding path program 1 times [2023-04-02 05:49:29,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:49:29,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288814217] [2023-04-02 05:49:29,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:49:29,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:49:29,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:49:29,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:49:29,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:49:29,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:49:29,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:49:29,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288814217] [2023-04-02 05:49:29,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288814217] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:49:29,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:49:29,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 05:49:29,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726212243] [2023-04-02 05:49:29,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:49:29,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 05:49:29,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:49:29,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 05:49:29,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 05:49:29,320 INFO L87 Difference]: Start difference. First operand 39353 states and 52711 transitions. Second operand has 4 states, 4 states have (on average 41.75) internal successors, (167), 3 states have internal predecessors, (167), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:49:39,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:49:39,247 INFO L93 Difference]: Finished difference Result 108085 states and 145797 transitions. [2023-04-02 05:49:39,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 05:49:39,248 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 3 states have internal predecessors, (167), 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 170 [2023-04-02 05:49:39,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:49:39,364 INFO L225 Difference]: With dead ends: 108085 [2023-04-02 05:49:39,364 INFO L226 Difference]: Without dead ends: 74871 [2023-04-02 05:49:39,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 05:49:39,403 INFO L413 NwaCegarLoop]: 429 mSDtfsCounter, 349 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 734 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 05:49:39,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [349 Valid, 752 Invalid, 745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 734 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 05:49:39,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74871 states. [2023-04-02 05:49:48,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74871 to 74869. [2023-04-02 05:49:48,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74869 states, 74865 states have (on average 1.333493621852668) internal successors, (99832), 74865 states have internal predecessors, (99832), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:49:48,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74869 states to 74869 states and 99835 transitions. [2023-04-02 05:49:48,616 INFO L78 Accepts]: Start accepts. Automaton has 74869 states and 99835 transitions. Word has length 170 [2023-04-02 05:49:48,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:49:48,616 INFO L495 AbstractCegarLoop]: Abstraction has 74869 states and 99835 transitions. [2023-04-02 05:49:48,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 3 states have internal predecessors, (167), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:49:48,617 INFO L276 IsEmpty]: Start isEmpty. Operand 74869 states and 99835 transitions. [2023-04-02 05:49:48,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2023-04-02 05:49:48,685 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:49:48,685 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:49:48,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-04-02 05:49:48,686 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:49:48,686 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:49:48,686 INFO L85 PathProgramCache]: Analyzing trace with hash 2076369389, now seen corresponding path program 1 times [2023-04-02 05:49:48,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:49:48,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799264998] [2023-04-02 05:49:48,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:49:48,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:49:48,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:49:49,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:49:49,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:49:49,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:49:49,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:49:49,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799264998] [2023-04-02 05:49:49,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799264998] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:49:49,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:49:49,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 05:49:49,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949403090] [2023-04-02 05:49:49,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:49:49,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 05:49:49,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:49:49,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 05:49:49,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-02 05:49:49,138 INFO L87 Difference]: Start difference. First operand 74869 states and 99835 transitions. Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:49:57,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:49:57,313 INFO L93 Difference]: Finished difference Result 131462 states and 175314 transitions. [2023-04-02 05:49:57,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 05:49:57,314 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 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 170 [2023-04-02 05:49:57,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:49:57,427 INFO L225 Difference]: With dead ends: 131462 [2023-04-02 05:49:57,427 INFO L226 Difference]: Without dead ends: 56667 [2023-04-02 05:49:57,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-02 05:49:57,487 INFO L413 NwaCegarLoop]: 467 mSDtfsCounter, 43 mSDsluCounter, 867 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 1334 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 05:49:57,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 1334 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 05:49:57,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56667 states. [2023-04-02 05:50:04,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56667 to 56667. [2023-04-02 05:50:04,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56667 states, 56663 states have (on average 1.333603939078411) internal successors, (75566), 56663 states have internal predecessors, (75566), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:50:04,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56667 states to 56667 states and 75569 transitions. [2023-04-02 05:50:04,802 INFO L78 Accepts]: Start accepts. Automaton has 56667 states and 75569 transitions. Word has length 170 [2023-04-02 05:50:04,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:50:04,802 INFO L495 AbstractCegarLoop]: Abstraction has 56667 states and 75569 transitions. [2023-04-02 05:50:04,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:50:04,803 INFO L276 IsEmpty]: Start isEmpty. Operand 56667 states and 75569 transitions. [2023-04-02 05:50:04,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-04-02 05:50:04,839 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:50:04,839 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:50:04,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-04-02 05:50:04,840 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:50:04,840 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:50:04,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1320976705, now seen corresponding path program 1 times [2023-04-02 05:50:04,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:50:04,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311412141] [2023-04-02 05:50:04,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:50:04,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:50:04,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:50:05,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:50:05,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:50:05,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:50:05,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:50:05,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311412141] [2023-04-02 05:50:05,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311412141] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:50:05,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:50:05,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 05:50:05,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479790232] [2023-04-02 05:50:05,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:50:05,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 05:50:05,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:50:05,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 05:50:05,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-02 05:50:05,186 INFO L87 Difference]: Start difference. First operand 56667 states and 75569 transitions. Second operand has 6 states, 6 states have (on average 29.166666666666668) internal successors, (175), 5 states have internal predecessors, (175), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:50:16,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:50:16,440 INFO L93 Difference]: Finished difference Result 89618 states and 124344 transitions. [2023-04-02 05:50:16,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 05:50:16,441 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.166666666666668) internal successors, (175), 5 states have internal predecessors, (175), 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 178 [2023-04-02 05:50:16,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:50:16,590 INFO L225 Difference]: With dead ends: 89618 [2023-04-02 05:50:16,590 INFO L226 Difference]: Without dead ends: 77610 [2023-04-02 05:50:16,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-04-02 05:50:16,621 INFO L413 NwaCegarLoop]: 542 mSDtfsCounter, 939 mSDsluCounter, 908 mSDsCounter, 0 mSdLazyCounter, 692 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 939 SdHoareTripleChecker+Valid, 1450 SdHoareTripleChecker+Invalid, 701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-02 05:50:16,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [939 Valid, 1450 Invalid, 701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 692 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-02 05:50:16,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77610 states. [2023-04-02 05:50:25,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77610 to 65640. [2023-04-02 05:50:25,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65640 states, 65636 states have (on average 1.352078127856664) internal successors, (88745), 65636 states have internal predecessors, (88745), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:50:25,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65640 states to 65640 states and 88748 transitions. [2023-04-02 05:50:25,786 INFO L78 Accepts]: Start accepts. Automaton has 65640 states and 88748 transitions. Word has length 178 [2023-04-02 05:50:25,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:50:25,786 INFO L495 AbstractCegarLoop]: Abstraction has 65640 states and 88748 transitions. [2023-04-02 05:50:25,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.166666666666668) internal successors, (175), 5 states have internal predecessors, (175), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:50:25,787 INFO L276 IsEmpty]: Start isEmpty. Operand 65640 states and 88748 transitions. [2023-04-02 05:50:25,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-04-02 05:50:25,825 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:50:25,825 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:50:25,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-04-02 05:50:25,825 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:50:25,825 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:50:25,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1076759510, now seen corresponding path program 1 times [2023-04-02 05:50:25,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:50:25,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441849163] [2023-04-02 05:50:25,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:50:25,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:50:25,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:50:26,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:50:26,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:50:26,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:50:26,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:50:26,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441849163] [2023-04-02 05:50:26,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441849163] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:50:26,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:50:26,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 05:50:26,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895786945] [2023-04-02 05:50:26,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:50:26,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 05:50:26,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:50:26,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 05:50:26,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 05:50:26,150 INFO L87 Difference]: Start difference. First operand 65640 states and 88748 transitions. Second operand has 6 states, 6 states have (on average 29.166666666666668) internal successors, (175), 5 states have internal predecessors, (175), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:50:44,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:50:44,768 INFO L93 Difference]: Finished difference Result 152433 states and 217229 transitions. [2023-04-02 05:50:44,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 05:50:44,769 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.166666666666668) internal successors, (175), 5 states have internal predecessors, (175), 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 178 [2023-04-02 05:50:44,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:50:45,016 INFO L225 Difference]: With dead ends: 152433 [2023-04-02 05:50:45,016 INFO L226 Difference]: Without dead ends: 118732 [2023-04-02 05:50:45,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-04-02 05:50:45,069 INFO L413 NwaCegarLoop]: 782 mSDtfsCounter, 1155 mSDsluCounter, 1386 mSDsCounter, 0 mSdLazyCounter, 986 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1155 SdHoareTripleChecker+Valid, 2168 SdHoareTripleChecker+Invalid, 1001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 986 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-02 05:50:45,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1155 Valid, 2168 Invalid, 1001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 986 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-02 05:50:45,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118732 states. [2023-04-02 05:50:58,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118732 to 91215. [2023-04-02 05:50:59,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91215 states, 91211 states have (on average 1.3843286445713785) internal successors, (126266), 91211 states have internal predecessors, (126266), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:50:59,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91215 states to 91215 states and 126269 transitions. [2023-04-02 05:50:59,187 INFO L78 Accepts]: Start accepts. Automaton has 91215 states and 126269 transitions. Word has length 178 [2023-04-02 05:50:59,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:50:59,187 INFO L495 AbstractCegarLoop]: Abstraction has 91215 states and 126269 transitions. [2023-04-02 05:50:59,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.166666666666668) internal successors, (175), 5 states have internal predecessors, (175), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 05:50:59,188 INFO L276 IsEmpty]: Start isEmpty. Operand 91215 states and 126269 transitions. [2023-04-02 05:50:59,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-04-02 05:50:59,226 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:50:59,226 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:50:59,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-04-02 05:50:59,227 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:50:59,227 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:50:59,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1217791915, now seen corresponding path program 1 times [2023-04-02 05:50:59,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:50:59,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202155453] [2023-04-02 05:50:59,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:50:59,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:50:59,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:51:00,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:51:00,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:51:00,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:51:00,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:51:00,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202155453] [2023-04-02 05:51:00,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202155453] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:51:00,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:51:00,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-04-02 05:51:00,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174782496] [2023-04-02 05:51:00,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:51:00,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-04-02 05:51:00,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:51:00,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-04-02 05:51:00,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2023-04-02 05:51:00,306 INFO L87 Difference]: Start difference. First operand 91215 states and 126269 transitions. Second operand has 19 states, 18 states have (on average 9.722222222222221) internal successors, (175), 17 states have internal predecessors, (175), 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)