/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/systemc/token_ring.05.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 01:05:55,642 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 01:05:55,644 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 01:05:55,690 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 01:05:55,691 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 01:05:55,691 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 01:05:55,692 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 01:05:55,693 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 01:05:55,694 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 01:05:55,695 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 01:05:55,695 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 01:05:55,696 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 01:05:55,696 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 01:05:55,697 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 01:05:55,697 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 01:05:55,698 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 01:05:55,699 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 01:05:55,700 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 01:05:55,701 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 01:05:55,702 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 01:05:55,703 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 01:05:55,703 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 01:05:55,704 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 01:05:55,705 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 01:05:55,706 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 01:05:55,706 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 01:05:55,707 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 01:05:55,707 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 01:05:55,707 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 01:05:55,708 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2022-01-10 01:05:55,711 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 01:05:55,711 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 01:05:55,712 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 01:05:55,713 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf [2022-01-10 01:05:55,726 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 01:05:55,726 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 01:05:55,726 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 01:05:55,726 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 01:05:55,727 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 01:05:55,727 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 01:05:55,727 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 01:05:55,727 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 01:05:55,727 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 01:05:55,728 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 01:05:55,728 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 01:05:55,728 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 01:05:55,728 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 01:05:55,728 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 01:05:55,728 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 01:05:55,728 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 01:05:55,728 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 01:05:55,729 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 01:05:55,729 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 01:05:55,729 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 01:05:55,729 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 01:05:55,729 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 01:05:55,729 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 01:05:55,729 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 01:05:55,729 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 01:05:55,729 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 01:05:55,730 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 01:05:55,730 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 01:05:55,730 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 01:05:55,730 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 01:05:55,730 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 01:05:55,884 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 01:05:55,902 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 01:05:55,903 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 01:05:55,904 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 01:05:55,907 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 01:05:55,908 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/token_ring.05.cil-2.c [2022-01-10 01:05:55,961 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b859d8f9c/c236601d18924e9f9eedc17a50f1c823/FLAG7061337d2 [2022-01-10 01:05:56,344 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 01:05:56,345 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.05.cil-2.c [2022-01-10 01:05:56,360 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b859d8f9c/c236601d18924e9f9eedc17a50f1c823/FLAG7061337d2 [2022-01-10 01:05:56,371 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b859d8f9c/c236601d18924e9f9eedc17a50f1c823 [2022-01-10 01:05:56,374 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 01:05:56,376 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 01:05:56,379 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 01:05:56,379 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 01:05:56,382 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 01:05:56,382 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:05:56" (1/1) ... [2022-01-10 01:05:56,383 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4eedfb48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:05:56, skipping insertion in model container [2022-01-10 01:05:56,383 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:05:56" (1/1) ... [2022-01-10 01:05:56,387 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 01:05:56,430 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 01:05:56,562 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.05.cil-2.c[671,684] [2022-01-10 01:05:56,610 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 01:05:56,620 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 01:05:56,627 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.05.cil-2.c[671,684] [2022-01-10 01:05:56,659 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 01:05:56,669 INFO L208 MainTranslator]: Completed translation [2022-01-10 01:05:56,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:05:56 WrapperNode [2022-01-10 01:05:56,670 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 01:05:56,671 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 01:05:56,671 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 01:05:56,671 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 01:05:56,676 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:05:56" (1/1) ... [2022-01-10 01:05:56,684 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:05:56" (1/1) ... [2022-01-10 01:05:56,723 INFO L137 Inliner]: procedures = 38, calls = 47, calls flagged for inlining = 21, calls inlined = 21, statements flattened = 452 [2022-01-10 01:05:56,724 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 01:05:56,724 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 01:05:56,724 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 01:05:56,724 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 01:05:56,730 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:05:56" (1/1) ... [2022-01-10 01:05:56,730 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:05:56" (1/1) ... [2022-01-10 01:05:56,732 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:05:56" (1/1) ... [2022-01-10 01:05:56,733 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:05:56" (1/1) ... [2022-01-10 01:05:56,738 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:05:56" (1/1) ... [2022-01-10 01:05:56,743 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:05:56" (1/1) ... [2022-01-10 01:05:56,745 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:05:56" (1/1) ... [2022-01-10 01:05:56,747 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 01:05:56,748 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 01:05:56,748 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 01:05:56,748 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 01:05:56,749 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:05:56" (1/1) ... [2022-01-10 01:05:56,757 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 01:05:56,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 01:05:56,789 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) [2022-01-10 01:05:56,798 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 [2022-01-10 01:05:56,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 01:05:56,821 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-01-10 01:05:56,821 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-01-10 01:05:56,821 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-01-10 01:05:56,821 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-01-10 01:05:56,821 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-01-10 01:05:56,822 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-01-10 01:05:56,822 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-01-10 01:05:56,822 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-01-10 01:05:56,822 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-01-10 01:05:56,822 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-01-10 01:05:56,822 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-01-10 01:05:56,822 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-01-10 01:05:56,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-10 01:05:56,822 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-01-10 01:05:56,822 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-01-10 01:05:56,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 01:05:56,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 01:05:56,880 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 01:05:56,881 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 01:05:57,200 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 01:05:57,206 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 01:05:57,206 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2022-01-10 01:05:57,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:05:57 BoogieIcfgContainer [2022-01-10 01:05:57,208 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 01:05:57,209 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 01:05:57,209 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 01:05:57,211 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 01:05:57,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 01:05:56" (1/3) ... [2022-01-10 01:05:57,212 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@591f88b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:05:57, skipping insertion in model container [2022-01-10 01:05:57,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:05:56" (2/3) ... [2022-01-10 01:05:57,212 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@591f88b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:05:57, skipping insertion in model container [2022-01-10 01:05:57,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:05:57" (3/3) ... [2022-01-10 01:05:57,213 INFO L111 eAbstractionObserver]: Analyzing ICFG token_ring.05.cil-2.c [2022-01-10 01:05:57,217 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 01:05:57,217 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 01:05:57,248 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 01:05:57,253 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 01:05:57,253 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 01:05:57,268 INFO L276 IsEmpty]: Start isEmpty. Operand has 215 states, 185 states have (on average 1.6324324324324324) internal successors, (302), 189 states have internal predecessors, (302), 21 states have call successors, (21), 7 states have call predecessors, (21), 7 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2022-01-10 01:05:57,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-10 01:05:57,275 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:05:57,275 INFO L514 BasicCegarLoop]: 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] [2022-01-10 01:05:57,276 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:05:57,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:05:57,279 INFO L85 PathProgramCache]: Analyzing trace with hash 2097421190, now seen corresponding path program 1 times [2022-01-10 01:05:57,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:05:57,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146975183] [2022-01-10 01:05:57,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:05:57,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:05:57,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:05:57,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 01:05:57,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:05:57,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-01-10 01:05:57,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:05:57,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-01-10 01:05:57,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:05:57,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-01-10 01:05:57,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:05:57,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-01-10 01:05:57,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:05:57,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:05:57,584 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:05:57,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146975183] [2022-01-10 01:05:57,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146975183] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:05:57,585 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:05:57,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 01:05:57,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922974791] [2022-01-10 01:05:57,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:05:57,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 01:05:57,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:05:57,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 01:05:57,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 01:05:57,612 INFO L87 Difference]: Start difference. First operand has 215 states, 185 states have (on average 1.6324324324324324) internal successors, (302), 189 states have internal predecessors, (302), 21 states have call successors, (21), 7 states have call predecessors, (21), 7 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:05:58,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:05:58,776 INFO L93 Difference]: Finished difference Result 749 states and 1221 transitions. [2022-01-10 01:05:58,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 01:05:58,779 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-01-10 01:05:58,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:05:58,790 INFO L225 Difference]: With dead ends: 749 [2022-01-10 01:05:58,790 INFO L226 Difference]: Without dead ends: 539 [2022-01-10 01:05:58,793 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-01-10 01:05:58,796 INFO L933 BasicCegarLoop]: 379 mSDtfsCounter, 769 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 998 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 781 SdHoareTripleChecker+Valid, 950 SdHoareTripleChecker+Invalid, 1094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 01:05:58,796 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [781 Valid, 950 Invalid, 1094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 998 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 01:05:58,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2022-01-10 01:05:58,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 408. [2022-01-10 01:05:58,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 359 states have (on average 1.5571030640668524) internal successors, (559), 362 states have internal predecessors, (559), 35 states have call successors, (35), 13 states have call predecessors, (35), 13 states have return successors, (36), 33 states have call predecessors, (36), 33 states have call successors, (36) [2022-01-10 01:05:58,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 630 transitions. [2022-01-10 01:05:58,887 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 630 transitions. Word has length 101 [2022-01-10 01:05:58,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:05:58,888 INFO L470 AbstractCegarLoop]: Abstraction has 408 states and 630 transitions. [2022-01-10 01:05:58,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:05:58,889 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 630 transitions. [2022-01-10 01:05:58,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-10 01:05:58,895 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:05:58,895 INFO L514 BasicCegarLoop]: 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] [2022-01-10 01:05:58,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 01:05:58,897 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:05:58,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:05:58,898 INFO L85 PathProgramCache]: Analyzing trace with hash 413606018, now seen corresponding path program 1 times [2022-01-10 01:05:58,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:05:58,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326992957] [2022-01-10 01:05:58,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:05:58,898 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:05:58,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:05:58,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 01:05:58,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:05:58,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-01-10 01:05:58,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:05:58,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-01-10 01:05:58,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:05:59,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-01-10 01:05:59,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:05:59,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-01-10 01:05:59,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:05:59,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:05:59,030 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:05:59,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326992957] [2022-01-10 01:05:59,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326992957] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:05:59,031 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:05:59,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:05:59,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243504584] [2022-01-10 01:05:59,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:05:59,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:05:59,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:05:59,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:05:59,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:05:59,033 INFO L87 Difference]: Start difference. First operand 408 states and 630 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:06:00,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:06:00,239 INFO L93 Difference]: Finished difference Result 1203 states and 1882 transitions. [2022-01-10 01:06:00,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 01:06:00,240 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-01-10 01:06:00,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:06:00,244 INFO L225 Difference]: With dead ends: 1203 [2022-01-10 01:06:00,244 INFO L226 Difference]: Without dead ends: 808 [2022-01-10 01:06:00,246 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-01-10 01:06:00,247 INFO L933 BasicCegarLoop]: 530 mSDtfsCounter, 764 mSDsluCounter, 1062 mSDsCounter, 0 mSdLazyCounter, 1557 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 776 SdHoareTripleChecker+Valid, 1592 SdHoareTripleChecker+Invalid, 1622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 01:06:00,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [776 Valid, 1592 Invalid, 1622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1557 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 01:06:00,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2022-01-10 01:06:00,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 594. [2022-01-10 01:06:00,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 524 states have (on average 1.549618320610687) internal successors, (812), 528 states have internal predecessors, (812), 49 states have call successors, (49), 19 states have call predecessors, (49), 20 states have return successors, (52), 48 states have call predecessors, (52), 47 states have call successors, (52) [2022-01-10 01:06:00,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 913 transitions. [2022-01-10 01:06:00,281 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 913 transitions. Word has length 101 [2022-01-10 01:06:00,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:06:00,281 INFO L470 AbstractCegarLoop]: Abstraction has 594 states and 913 transitions. [2022-01-10 01:06:00,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:06:00,282 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 913 transitions. [2022-01-10 01:06:00,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-10 01:06:00,284 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:06:00,285 INFO L514 BasicCegarLoop]: 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] [2022-01-10 01:06:00,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 01:06:00,286 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:06:00,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:06:00,286 INFO L85 PathProgramCache]: Analyzing trace with hash -2004878460, now seen corresponding path program 1 times [2022-01-10 01:06:00,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:06:00,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340009414] [2022-01-10 01:06:00,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:06:00,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:06:00,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:06:00,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 01:06:00,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:06:00,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-01-10 01:06:00,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:06:00,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-01-10 01:06:00,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:06:00,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-01-10 01:06:00,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:06:00,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-01-10 01:06:00,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:06:00,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:06:00,446 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:06:00,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340009414] [2022-01-10 01:06:00,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340009414] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:06:00,447 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:06:00,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:06:00,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536264520] [2022-01-10 01:06:00,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:06:00,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:06:00,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:06:00,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:06:00,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:06:00,449 INFO L87 Difference]: Start difference. First operand 594 states and 913 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:06:01,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:06:01,629 INFO L93 Difference]: Finished difference Result 1892 states and 2953 transitions. [2022-01-10 01:06:01,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 01:06:01,630 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-01-10 01:06:01,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:06:01,636 INFO L225 Difference]: With dead ends: 1892 [2022-01-10 01:06:01,636 INFO L226 Difference]: Without dead ends: 1311 [2022-01-10 01:06:01,638 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-01-10 01:06:01,639 INFO L933 BasicCegarLoop]: 522 mSDtfsCounter, 761 mSDsluCounter, 1062 mSDsCounter, 0 mSdLazyCounter, 1559 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 773 SdHoareTripleChecker+Valid, 1584 SdHoareTripleChecker+Invalid, 1627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 01:06:01,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [773 Valid, 1584 Invalid, 1627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1559 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 01:06:01,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1311 states. [2022-01-10 01:06:01,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1311 to 967. [2022-01-10 01:06:01,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 967 states, 855 states have (on average 1.5426900584795322) internal successors, (1319), 861 states have internal predecessors, (1319), 77 states have call successors, (77), 31 states have call predecessors, (77), 34 states have return successors, (88), 78 states have call predecessors, (88), 75 states have call successors, (88) [2022-01-10 01:06:01,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 967 states to 967 states and 1484 transitions. [2022-01-10 01:06:01,703 INFO L78 Accepts]: Start accepts. Automaton has 967 states and 1484 transitions. Word has length 101 [2022-01-10 01:06:01,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:06:01,704 INFO L470 AbstractCegarLoop]: Abstraction has 967 states and 1484 transitions. [2022-01-10 01:06:01,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:06:01,704 INFO L276 IsEmpty]: Start isEmpty. Operand 967 states and 1484 transitions. [2022-01-10 01:06:01,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-10 01:06:01,705 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:06:01,705 INFO L514 BasicCegarLoop]: 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] [2022-01-10 01:06:01,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 01:06:01,705 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:06:01,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:06:01,706 INFO L85 PathProgramCache]: Analyzing trace with hash 410957890, now seen corresponding path program 1 times [2022-01-10 01:06:01,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:06:01,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575108921] [2022-01-10 01:06:01,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:06:01,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:06:01,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:06:01,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 01:06:01,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:06:01,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-01-10 01:06:01,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:06:01,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-01-10 01:06:01,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:06:01,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-01-10 01:06:01,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:06:01,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-01-10 01:06:01,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:06:01,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:06:01,809 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:06:01,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575108921] [2022-01-10 01:06:01,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575108921] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:06:01,809 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:06:01,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:06:01,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064488788] [2022-01-10 01:06:01,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:06:01,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:06:01,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:06:01,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:06:01,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:06:01,812 INFO L87 Difference]: Start difference. First operand 967 states and 1484 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:06:02,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:06:02,955 INFO L93 Difference]: Finished difference Result 3221 states and 5012 transitions. [2022-01-10 01:06:02,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 01:06:02,955 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-01-10 01:06:02,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:06:02,963 INFO L225 Difference]: With dead ends: 3221 [2022-01-10 01:06:02,963 INFO L226 Difference]: Without dead ends: 2267 [2022-01-10 01:06:02,966 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-01-10 01:06:02,966 INFO L933 BasicCegarLoop]: 518 mSDtfsCounter, 757 mSDsluCounter, 1062 mSDsCounter, 0 mSdLazyCounter, 1554 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 769 SdHoareTripleChecker+Valid, 1580 SdHoareTripleChecker+Invalid, 1622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 01:06:02,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [769 Valid, 1580 Invalid, 1622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1554 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 01:06:02,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2267 states. [2022-01-10 01:06:03,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2267 to 1714. [2022-01-10 01:06:03,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1714 states, 1518 states have (on average 1.5368906455862978) internal successors, (2333), 1528 states have internal predecessors, (2333), 133 states have call successors, (133), 55 states have call predecessors, (133), 62 states have return successors, (166), 138 states have call predecessors, (166), 131 states have call successors, (166) [2022-01-10 01:06:03,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1714 states to 1714 states and 2632 transitions. [2022-01-10 01:06:03,028 INFO L78 Accepts]: Start accepts. Automaton has 1714 states and 2632 transitions. Word has length 101 [2022-01-10 01:06:03,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:06:03,028 INFO L470 AbstractCegarLoop]: Abstraction has 1714 states and 2632 transitions. [2022-01-10 01:06:03,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:06:03,029 INFO L276 IsEmpty]: Start isEmpty. Operand 1714 states and 2632 transitions. [2022-01-10 01:06:03,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-10 01:06:03,030 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:06:03,030 INFO L514 BasicCegarLoop]: 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] [2022-01-10 01:06:03,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 01:06:03,030 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:06:03,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:06:03,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1735814084, now seen corresponding path program 1 times [2022-01-10 01:06:03,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:06:03,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705913248] [2022-01-10 01:06:03,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:06:03,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:06:03,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:06:03,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 01:06:03,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:06:03,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-01-10 01:06:03,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:06:03,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-01-10 01:06:03,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:06:03,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-01-10 01:06:03,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:06:03,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-01-10 01:06:03,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:06:03,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:06:03,124 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:06:03,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705913248] [2022-01-10 01:06:03,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705913248] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:06:03,124 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:06:03,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:06:03,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962749651] [2022-01-10 01:06:03,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:06:03,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:06:03,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:06:03,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:06:03,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:06:03,125 INFO L87 Difference]: Start difference. First operand 1714 states and 2632 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:06:04,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:06:04,268 INFO L93 Difference]: Finished difference Result 5878 states and 9146 transitions. [2022-01-10 01:06:04,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 01:06:04,269 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-01-10 01:06:04,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:06:04,285 INFO L225 Difference]: With dead ends: 5878 [2022-01-10 01:06:04,286 INFO L226 Difference]: Without dead ends: 4177 [2022-01-10 01:06:04,290 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-01-10 01:06:04,292 INFO L933 BasicCegarLoop]: 512 mSDtfsCounter, 756 mSDsluCounter, 1062 mSDsCounter, 0 mSdLazyCounter, 1546 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 768 SdHoareTripleChecker+Valid, 1574 SdHoareTripleChecker+Invalid, 1617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 01:06:04,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [768 Valid, 1574 Invalid, 1617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1546 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 01:06:04,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4177 states. [2022-01-10 01:06:04,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4177 to 3213. [2022-01-10 01:06:04,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3213 states, 2849 states have (on average 1.5328185328185329) internal successors, (4367), 2867 states have internal predecessors, (4367), 245 states have call successors, (245), 103 states have call predecessors, (245), 118 states have return successors, (340), 258 states have call predecessors, (340), 243 states have call successors, (340) [2022-01-10 01:06:04,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3213 states to 3213 states and 4952 transitions. [2022-01-10 01:06:04,437 INFO L78 Accepts]: Start accepts. Automaton has 3213 states and 4952 transitions. Word has length 101 [2022-01-10 01:06:04,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:06:04,437 INFO L470 AbstractCegarLoop]: Abstraction has 3213 states and 4952 transitions. [2022-01-10 01:06:04,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:06:04,438 INFO L276 IsEmpty]: Start isEmpty. Operand 3213 states and 4952 transitions. [2022-01-10 01:06:04,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-10 01:06:04,439 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:06:04,440 INFO L514 BasicCegarLoop]: 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] [2022-01-10 01:06:04,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 01:06:04,440 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:06:04,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:06:04,440 INFO L85 PathProgramCache]: Analyzing trace with hash -992395262, now seen corresponding path program 1 times [2022-01-10 01:06:04,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:06:04,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124009330] [2022-01-10 01:06:04,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:06:04,441 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:06:04,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:06:04,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 01:06:04,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:06:04,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-01-10 01:06:04,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:06:04,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-01-10 01:06:04,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:06:04,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-01-10 01:06:04,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:06:04,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-01-10 01:06:04,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:06:04,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:06:04,504 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:06:04,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124009330] [2022-01-10 01:06:04,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124009330] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:06:04,504 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:06:04,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:06:04,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607201978] [2022-01-10 01:06:04,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:06:04,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:06:04,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:06:04,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:06:04,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:06:04,505 INFO L87 Difference]: Start difference. First operand 3213 states and 4952 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:06:05,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:06:05,885 INFO L93 Difference]: Finished difference Result 12440 states and 19334 transitions. [2022-01-10 01:06:05,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 01:06:05,885 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-01-10 01:06:05,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:06:05,922 INFO L225 Difference]: With dead ends: 12440 [2022-01-10 01:06:05,922 INFO L226 Difference]: Without dead ends: 9240 [2022-01-10 01:06:05,934 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-01-10 01:06:05,934 INFO L933 BasicCegarLoop]: 374 mSDtfsCounter, 1023 mSDsluCounter, 706 mSDsCounter, 0 mSdLazyCounter, 1352 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1041 SdHoareTripleChecker+Valid, 1080 SdHoareTripleChecker+Invalid, 1453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 01:06:05,935 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1041 Valid, 1080 Invalid, 1453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1352 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 01:06:05,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9240 states. [2022-01-10 01:06:06,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9240 to 6193. [2022-01-10 01:06:06,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6193 states, 5509 states have (on average 1.534761299691414) internal successors, (8455), 5543 states have internal predecessors, (8455), 453 states have call successors, (453), 199 states have call predecessors, (453), 230 states have return successors, (726), 482 states have call predecessors, (726), 451 states have call successors, (726) [2022-01-10 01:06:06,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6193 states to 6193 states and 9634 transitions. [2022-01-10 01:06:06,231 INFO L78 Accepts]: Start accepts. Automaton has 6193 states and 9634 transitions. Word has length 101 [2022-01-10 01:06:06,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:06:06,232 INFO L470 AbstractCegarLoop]: Abstraction has 6193 states and 9634 transitions. [2022-01-10 01:06:06,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:06:06,232 INFO L276 IsEmpty]: Start isEmpty. Operand 6193 states and 9634 transitions. [2022-01-10 01:06:06,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-10 01:06:06,239 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:06:06,239 INFO L514 BasicCegarLoop]: 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] [2022-01-10 01:06:06,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 01:06:06,239 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:06:06,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:06:06,240 INFO L85 PathProgramCache]: Analyzing trace with hash -2134897728, now seen corresponding path program 1 times [2022-01-10 01:06:06,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:06:06,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729308420] [2022-01-10 01:06:06,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:06:06,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:06:06,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:06:06,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 01:06:06,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:06:06,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-01-10 01:06:06,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:06:06,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-01-10 01:06:06,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:06:06,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-01-10 01:06:06,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:06:06,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-01-10 01:06:06,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:06:06,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:06:06,329 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:06:06,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729308420] [2022-01-10 01:06:06,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729308420] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:06:06,330 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:06:06,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:06:06,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835045697] [2022-01-10 01:06:06,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:06:06,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:06:06,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:06:06,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:06:06,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:06:06,331 INFO L87 Difference]: Start difference. First operand 6193 states and 9634 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:06:08,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:06:08,185 INFO L93 Difference]: Finished difference Result 23806 states and 37274 transitions. [2022-01-10 01:06:08,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 01:06:08,186 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-01-10 01:06:08,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:06:08,267 INFO L225 Difference]: With dead ends: 23806 [2022-01-10 01:06:08,267 INFO L226 Difference]: Without dead ends: 17626 [2022-01-10 01:06:08,290 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-01-10 01:06:08,291 INFO L933 BasicCegarLoop]: 572 mSDtfsCounter, 792 mSDsluCounter, 1051 mSDsCounter, 0 mSdLazyCounter, 1744 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 803 SdHoareTripleChecker+Valid, 1623 SdHoareTripleChecker+Invalid, 1818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:06:08,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [803 Valid, 1623 Invalid, 1818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1744 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-10 01:06:08,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17626 states. [2022-01-10 01:06:08,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17626 to 11814. [2022-01-10 01:06:08,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11814 states, 10506 states have (on average 1.529126213592233) internal successors, (16065), 10572 states have internal predecessors, (16065), 853 states have call successors, (853), 391 states have call predecessors, (853), 454 states have return successors, (1644), 914 states have call predecessors, (1644), 851 states have call successors, (1644) [2022-01-10 01:06:08,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11814 states to 11814 states and 18562 transitions. [2022-01-10 01:06:08,829 INFO L78 Accepts]: Start accepts. Automaton has 11814 states and 18562 transitions. Word has length 101 [2022-01-10 01:06:08,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:06:08,831 INFO L470 AbstractCegarLoop]: Abstraction has 11814 states and 18562 transitions. [2022-01-10 01:06:08,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:06:08,831 INFO L276 IsEmpty]: Start isEmpty. Operand 11814 states and 18562 transitions. [2022-01-10 01:06:08,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-10 01:06:08,840 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:06:08,840 INFO L514 BasicCegarLoop]: 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] [2022-01-10 01:06:08,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 01:06:08,840 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:06:08,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:06:08,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1894657982, now seen corresponding path program 1 times [2022-01-10 01:06:08,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:06:08,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025370181] [2022-01-10 01:06:08,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:06:08,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:06:08,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:06:08,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 01:06:08,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:06:08,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-01-10 01:06:08,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:06:08,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-01-10 01:06:08,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:06:08,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-01-10 01:06:08,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:06:08,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-01-10 01:06:08,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:06:08,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:06:08,923 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:06:08,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025370181] [2022-01-10 01:06:08,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025370181] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:06:08,923 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:06:08,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:06:08,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306239775] [2022-01-10 01:06:08,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:06:08,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:06:08,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:06:08,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:06:08,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:06:08,924 INFO L87 Difference]: Start difference. First operand 11814 states and 18562 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:06:11,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:06:11,380 INFO L93 Difference]: Finished difference Result 44985 states and 71096 transitions. [2022-01-10 01:06:11,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 01:06:11,380 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-01-10 01:06:11,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:06:11,509 INFO L225 Difference]: With dead ends: 44985 [2022-01-10 01:06:11,510 INFO L226 Difference]: Without dead ends: 33184 [2022-01-10 01:06:11,552 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-01-10 01:06:11,553 INFO L933 BasicCegarLoop]: 492 mSDtfsCounter, 884 mSDsluCounter, 1054 mSDsCounter, 0 mSdLazyCounter, 1503 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 902 SdHoareTripleChecker+Valid, 1546 SdHoareTripleChecker+Invalid, 1580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:06:11,553 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [902 Valid, 1546 Invalid, 1580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1503 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-10 01:06:11,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33184 states. [2022-01-10 01:06:12,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33184 to 23343. [2022-01-10 01:06:12,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23343 states, 20819 states have (on average 1.5318218934627024) internal successors, (31891), 20949 states have internal predecessors, (31891), 1621 states have call successors, (1621), 775 states have call predecessors, (1621), 902 states have return successors, (3934), 1746 states have call predecessors, (3934), 1619 states have call successors, (3934) [2022-01-10 01:06:12,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23343 states to 23343 states and 37446 transitions. [2022-01-10 01:06:12,821 INFO L78 Accepts]: Start accepts. Automaton has 23343 states and 37446 transitions. Word has length 101 [2022-01-10 01:06:12,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:06:12,822 INFO L470 AbstractCegarLoop]: Abstraction has 23343 states and 37446 transitions. [2022-01-10 01:06:12,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:06:12,822 INFO L276 IsEmpty]: Start isEmpty. Operand 23343 states and 37446 transitions. [2022-01-10 01:06:12,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-10 01:06:12,835 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:06:12,835 INFO L514 BasicCegarLoop]: 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] [2022-01-10 01:06:12,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 01:06:12,835 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:06:12,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:06:12,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1055624320, now seen corresponding path program 1 times [2022-01-10 01:06:12,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:06:12,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403232613] [2022-01-10 01:06:12,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:06:12,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:06:12,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:06:12,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 01:06:12,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:06:12,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-01-10 01:06:12,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:06:12,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-01-10 01:06:12,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:06:12,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-01-10 01:06:12,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:06:12,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-01-10 01:06:12,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:06:12,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:06:12,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:06:12,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403232613] [2022-01-10 01:06:12,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403232613] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:06:12,917 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:06:12,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:06:12,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519047020] [2022-01-10 01:06:12,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:06:12,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:06:12,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:06:12,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:06:12,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:06:12,918 INFO L87 Difference]: Start difference. First operand 23343 states and 37446 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:06:16,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:06:16,794 INFO L93 Difference]: Finished difference Result 87056 states and 140462 transitions. [2022-01-10 01:06:16,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 01:06:16,794 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-01-10 01:06:16,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:06:17,138 INFO L225 Difference]: With dead ends: 87056 [2022-01-10 01:06:17,139 INFO L226 Difference]: Without dead ends: 63726 [2022-01-10 01:06:17,195 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-01-10 01:06:17,197 INFO L933 BasicCegarLoop]: 487 mSDtfsCounter, 844 mSDsluCounter, 1054 mSDsCounter, 0 mSdLazyCounter, 1495 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 862 SdHoareTripleChecker+Valid, 1541 SdHoareTripleChecker+Invalid, 1572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 01:06:17,197 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [862 Valid, 1541 Invalid, 1572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1495 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 01:06:17,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63726 states. [2022-01-10 01:06:19,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63726 to 46336. [2022-01-10 01:06:19,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46336 states, 41444 states have (on average 1.5347215519737476) internal successors, (63605), 41702 states have internal predecessors, (63605), 3093 states have call successors, (3093), 1543 states have call predecessors, (3093), 1798 states have return successors, (9908), 3346 states have call predecessors, (9908), 3091 states have call successors, (9908) [2022-01-10 01:06:19,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46336 states to 46336 states and 76606 transitions. [2022-01-10 01:06:19,819 INFO L78 Accepts]: Start accepts. Automaton has 46336 states and 76606 transitions. Word has length 101 [2022-01-10 01:06:19,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:06:19,819 INFO L470 AbstractCegarLoop]: Abstraction has 46336 states and 76606 transitions. [2022-01-10 01:06:19,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:06:19,819 INFO L276 IsEmpty]: Start isEmpty. Operand 46336 states and 76606 transitions. [2022-01-10 01:06:19,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-10 01:06:19,846 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:06:19,846 INFO L514 BasicCegarLoop]: 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] [2022-01-10 01:06:19,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 01:06:19,847 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:06:19,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:06:19,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1028558718, now seen corresponding path program 1 times [2022-01-10 01:06:19,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:06:19,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781811828] [2022-01-10 01:06:19,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:06:19,849 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:06:19,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:06:19,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 01:06:19,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:06:19,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-01-10 01:06:19,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:06:19,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-01-10 01:06:19,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:06:19,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-01-10 01:06:19,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:06:19,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-01-10 01:06:19,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:06:19,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:06:19,931 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:06:19,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781811828] [2022-01-10 01:06:19,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781811828] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:06:19,931 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:06:19,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:06:19,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965947897] [2022-01-10 01:06:19,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:06:19,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:06:19,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:06:19,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:06:19,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:06:19,932 INFO L87 Difference]: Start difference. First operand 46336 states and 76606 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:06:26,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:06:26,353 INFO L93 Difference]: Finished difference Result 168831 states and 281252 transitions. [2022-01-10 01:06:26,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 01:06:26,353 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-01-10 01:06:26,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:06:26,988 INFO L225 Difference]: With dead ends: 168831 [2022-01-10 01:06:26,988 INFO L226 Difference]: Without dead ends: 122508 [2022-01-10 01:06:27,232 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-01-10 01:06:27,232 INFO L933 BasicCegarLoop]: 510 mSDtfsCounter, 760 mSDsluCounter, 1054 mSDsCounter, 0 mSdLazyCounter, 1616 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 771 SdHoareTripleChecker+Valid, 1564 SdHoareTripleChecker+Invalid, 1690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 01:06:27,233 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [771 Valid, 1564 Invalid, 1690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1616 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 01:06:27,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122508 states. [2022-01-10 01:06:31,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122508 to 92193. [2022-01-10 01:06:31,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92193 states, 82693 states have (on average 1.537723870218761) internal successors, (127159), 83207 states have internal predecessors, (127159), 5909 states have call successors, (5909), 3079 states have call predecessors, (5909), 3590 states have return successors, (26102), 6418 states have call predecessors, (26102), 5907 states have call successors, (26102) [2022-01-10 01:06:32,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92193 states to 92193 states and 159170 transitions. [2022-01-10 01:06:32,194 INFO L78 Accepts]: Start accepts. Automaton has 92193 states and 159170 transitions. Word has length 101 [2022-01-10 01:06:32,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:06:32,194 INFO L470 AbstractCegarLoop]: Abstraction has 92193 states and 159170 transitions. [2022-01-10 01:06:32,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:06:32,194 INFO L276 IsEmpty]: Start isEmpty. Operand 92193 states and 159170 transitions. [2022-01-10 01:06:32,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-10 01:06:32,255 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:06:32,255 INFO L514 BasicCegarLoop]: 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] [2022-01-10 01:06:32,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 01:06:32,256 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:06:32,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:06:32,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1189071680, now seen corresponding path program 1 times [2022-01-10 01:06:32,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:06:32,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284293024] [2022-01-10 01:06:32,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:06:32,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:06:32,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:06:32,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 01:06:32,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:06:32,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-01-10 01:06:32,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:06:32,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-01-10 01:06:32,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:06:32,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-01-10 01:06:32,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:06:32,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-01-10 01:06:32,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:06:32,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:06:32,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:06:32,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284293024] [2022-01-10 01:06:32,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284293024] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:06:32,331 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:06:32,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:06:32,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368665752] [2022-01-10 01:06:32,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:06:32,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:06:32,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:06:32,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:06:32,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:06:32,333 INFO L87 Difference]: Start difference. First operand 92193 states and 159170 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:06:44,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:06:44,053 INFO L93 Difference]: Finished difference Result 327502 states and 572634 transitions. [2022-01-10 01:06:44,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 01:06:44,054 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2022-01-10 01:06:44,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:06:45,208 INFO L225 Difference]: With dead ends: 327502 [2022-01-10 01:06:45,208 INFO L226 Difference]: Without dead ends: 235322 [2022-01-10 01:06:45,513 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-01-10 01:06:45,513 INFO L933 BasicCegarLoop]: 471 mSDtfsCounter, 764 mSDsluCounter, 1039 mSDsCounter, 0 mSdLazyCounter, 1468 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 782 SdHoareTripleChecker+Valid, 1510 SdHoareTripleChecker+Invalid, 1549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 01:06:45,513 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [782 Valid, 1510 Invalid, 1549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1468 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 01:06:45,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235322 states. [2022-01-10 01:06:54,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235322 to 183602. [2022-01-10 01:06:55,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183602 states, 165174 states have (on average 1.5408296705292601) internal successors, (254505), 166200 states have internal predecessors, (254505), 11269 states have call successors, (11269), 6135 states have call predecessors, (11269), 7158 states have return successors, (71340), 12290 states have call predecessors, (71340), 11267 states have call successors, (71340) [2022-01-10 01:06:56,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183602 states to 183602 states and 337114 transitions. [2022-01-10 01:06:56,053 INFO L78 Accepts]: Start accepts. Automaton has 183602 states and 337114 transitions. Word has length 101 [2022-01-10 01:06:56,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:06:56,053 INFO L470 AbstractCegarLoop]: Abstraction has 183602 states and 337114 transitions. [2022-01-10 01:06:56,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:06:56,054 INFO L276 IsEmpty]: Start isEmpty. Operand 183602 states and 337114 transitions. [2022-01-10 01:06:56,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-10 01:06:56,171 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:06:56,171 INFO L514 BasicCegarLoop]: 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] [2022-01-10 01:06:56,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 01:06:56,172 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:06:56,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:06:56,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1371791166, now seen corresponding path program 1 times [2022-01-10 01:06:56,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:06:56,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393388935] [2022-01-10 01:06:56,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:06:56,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:06:56,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:06:56,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 01:06:56,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:06:56,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-01-10 01:06:56,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:06:56,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-01-10 01:06:56,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:06:56,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-01-10 01:06:56,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:06:56,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-01-10 01:06:56,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:06:56,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:06:56,234 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:06:56,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393388935] [2022-01-10 01:06:56,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393388935] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:06:56,235 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:06:56,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 01:06:56,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074368319] [2022-01-10 01:06:56,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:06:56,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 01:06:56,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:06:56,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 01:06:56,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 01:06:56,236 INFO L87 Difference]: Start difference. First operand 183602 states and 337114 transitions. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)