/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/seq-mthreaded/pals_lcr.7_overflow.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 01:16:08,551 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 01:16:08,552 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 01:16:08,612 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 01:16:08,612 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 01:16:08,615 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 01:16:08,617 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 01:16:08,620 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 01:16:08,621 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 01:16:08,624 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 01:16:08,625 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 01:16:08,626 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 01:16:08,626 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 01:16:08,628 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 01:16:08,628 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 01:16:08,629 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 01:16:08,630 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 01:16:08,630 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 01:16:08,633 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 01:16:08,637 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 01:16:08,638 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 01:16:08,639 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 01:16:08,640 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 01:16:08,640 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 01:16:08,645 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 01:16:08,645 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 01:16:08,646 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 01:16:08,646 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 01:16:08,647 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 01:16:08,647 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 01:16:08,647 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 01:16:08,648 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 01:16:08,649 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 01:16:08,649 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 01:16:08,650 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 01:16:08,650 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 01:16:08,651 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 01:16:08,651 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 01:16:08,651 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 01:16:08,652 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 01:16:08,652 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 01:16:08,653 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 01:16:08,675 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 01:16:08,675 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 01:16:08,676 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 01:16:08,676 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 01:16:08,676 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 01:16:08,677 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 01:16:08,677 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 01:16:08,677 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 01:16:08,677 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 01:16:08,677 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 01:16:08,678 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 01:16:08,678 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 01:16:08,678 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 01:16:08,678 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 01:16:08,678 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 01:16:08,678 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 01:16:08,678 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 01:16:08,678 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 01:16:08,678 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 01:16:08,679 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 01:16:08,679 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 01:16:08,679 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 01:16:08,679 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 01:16:08,679 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 01:16:08,679 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 01:16:08,679 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 01:16:08,679 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 01:16:08,679 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 01:16:08,679 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 01:16:08,679 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 01:16:08,680 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 01:16:08,833 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 01:16:08,869 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 01:16:08,872 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 01:16:08,873 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 01:16:08,873 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 01:16:08,874 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr.7_overflow.ufo.UNBOUNDED.pals.c [2022-01-10 01:16:08,914 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f144cf6b/0f583bf0fd074afb9840ae9b2e277a28/FLAG59bb46420 [2022-01-10 01:16:09,372 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 01:16:09,373 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr.7_overflow.ufo.UNBOUNDED.pals.c [2022-01-10 01:16:09,383 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f144cf6b/0f583bf0fd074afb9840ae9b2e277a28/FLAG59bb46420 [2022-01-10 01:16:09,712 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f144cf6b/0f583bf0fd074afb9840ae9b2e277a28 [2022-01-10 01:16:09,714 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 01:16:09,715 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 01:16:09,718 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 01:16:09,718 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 01:16:09,721 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 01:16:09,721 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:16:09" (1/1) ... [2022-01-10 01:16:09,722 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75846ced and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:09, skipping insertion in model container [2022-01-10 01:16:09,722 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:16:09" (1/1) ... [2022-01-10 01:16:09,727 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 01:16:09,762 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 01:16:09,969 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr.7_overflow.ufo.UNBOUNDED.pals.c[20121,20134] [2022-01-10 01:16:09,971 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 01:16:09,977 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 01:16:10,011 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr.7_overflow.ufo.UNBOUNDED.pals.c[20121,20134] [2022-01-10 01:16:10,011 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 01:16:10,021 INFO L208 MainTranslator]: Completed translation [2022-01-10 01:16:10,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:10 WrapperNode [2022-01-10 01:16:10,022 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 01:16:10,022 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 01:16:10,022 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 01:16:10,023 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 01:16:10,027 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:10" (1/1) ... [2022-01-10 01:16:10,035 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:10" (1/1) ... [2022-01-10 01:16:10,065 INFO L137 Inliner]: procedures = 27, calls = 18, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 449 [2022-01-10 01:16:10,065 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 01:16:10,066 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 01:16:10,066 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 01:16:10,066 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 01:16:10,071 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:10" (1/1) ... [2022-01-10 01:16:10,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:10" (1/1) ... [2022-01-10 01:16:10,082 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:10" (1/1) ... [2022-01-10 01:16:10,082 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:10" (1/1) ... [2022-01-10 01:16:10,087 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:10" (1/1) ... [2022-01-10 01:16:10,091 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:10" (1/1) ... [2022-01-10 01:16:10,093 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:10" (1/1) ... [2022-01-10 01:16:10,105 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 01:16:10,106 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 01:16:10,106 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 01:16:10,106 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 01:16:10,107 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:10" (1/1) ... [2022-01-10 01:16:10,112 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 01:16:10,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 01:16:10,135 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 01:16:10,136 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 01:16:10,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 01:16:10,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-10 01:16:10,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 01:16:10,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 01:16:10,286 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 01:16:10,287 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 01:16:10,709 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 01:16:10,715 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 01:16:10,715 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 01:16:10,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:16:10 BoogieIcfgContainer [2022-01-10 01:16:10,716 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 01:16:10,717 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 01:16:10,718 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 01:16:10,721 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 01:16:10,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 01:16:09" (1/3) ... [2022-01-10 01:16:10,722 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f1c640f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:16:10, skipping insertion in model container [2022-01-10 01:16:10,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:10" (2/3) ... [2022-01-10 01:16:10,722 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f1c640f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:16:10, skipping insertion in model container [2022-01-10 01:16:10,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:16:10" (3/3) ... [2022-01-10 01:16:10,723 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.7_overflow.ufo.UNBOUNDED.pals.c [2022-01-10 01:16:10,726 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 01:16:10,726 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 01:16:10,760 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 01:16:10,764 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 01:16:10,764 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 01:16:10,779 INFO L276 IsEmpty]: Start isEmpty. Operand has 128 states, 126 states have (on average 1.753968253968254) internal successors, (221), 127 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:16:10,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-01-10 01:16:10,784 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:16:10,784 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] [2022-01-10 01:16:10,785 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:16:10,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:16:10,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1781508813, now seen corresponding path program 1 times [2022-01-10 01:16:10,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:16:10,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421130728] [2022-01-10 01:16:10,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:16:10,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:16:10,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:16:10,943 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 01:16:10,943 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:16:10,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421130728] [2022-01-10 01:16:10,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421130728] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:16:10,944 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:16:10,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 01:16:10,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486153265] [2022-01-10 01:16:10,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:16:10,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 01:16:10,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:16:10,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 01:16:10,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 01:16:10,977 INFO L87 Difference]: Start difference. First operand has 128 states, 126 states have (on average 1.753968253968254) internal successors, (221), 127 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:16:11,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:16:11,010 INFO L93 Difference]: Finished difference Result 197 states and 333 transitions. [2022-01-10 01:16:11,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 01:16:11,013 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2022-01-10 01:16:11,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:16:11,023 INFO L225 Difference]: With dead ends: 197 [2022-01-10 01:16:11,024 INFO L226 Difference]: Without dead ends: 124 [2022-01-10 01:16:11,026 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 01:16:11,030 INFO L933 BasicCegarLoop]: 214 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:16:11,031 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:16:11,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-01-10 01:16:11,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2022-01-10 01:16:11,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 123 states have (on average 1.7398373983739837) internal successors, (214), 123 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:16:11,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 214 transitions. [2022-01-10 01:16:11,074 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 214 transitions. Word has length 41 [2022-01-10 01:16:11,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:16:11,075 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 214 transitions. [2022-01-10 01:16:11,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:16:11,075 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 214 transitions. [2022-01-10 01:16:11,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-01-10 01:16:11,077 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:16:11,078 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] [2022-01-10 01:16:11,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 01:16:11,078 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:16:11,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:16:11,080 INFO L85 PathProgramCache]: Analyzing trace with hash 2119091697, now seen corresponding path program 1 times [2022-01-10 01:16:11,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:16:11,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004731006] [2022-01-10 01:16:11,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:16:11,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:16:11,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:16:11,170 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 01:16:11,170 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:16:11,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004731006] [2022-01-10 01:16:11,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004731006] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:16:11,171 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:16:11,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 01:16:11,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927566824] [2022-01-10 01:16:11,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:16:11,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 01:16:11,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:16:11,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 01:16:11,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:16:11,173 INFO L87 Difference]: Start difference. First operand 124 states and 214 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:16:11,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:16:11,242 INFO L93 Difference]: Finished difference Result 196 states and 326 transitions. [2022-01-10 01:16:11,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 01:16:11,243 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2022-01-10 01:16:11,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:16:11,244 INFO L225 Difference]: With dead ends: 196 [2022-01-10 01:16:11,244 INFO L226 Difference]: Without dead ends: 124 [2022-01-10 01:16:11,244 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:16:11,245 INFO L933 BasicCegarLoop]: 212 mSDtfsCounter, 3 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 795 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:16:11,245 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 795 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:16:11,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-01-10 01:16:11,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2022-01-10 01:16:11,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 123 states have (on average 1.3333333333333333) internal successors, (164), 123 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:16:11,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 164 transitions. [2022-01-10 01:16:11,250 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 164 transitions. Word has length 41 [2022-01-10 01:16:11,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:16:11,251 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 164 transitions. [2022-01-10 01:16:11,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:16:11,251 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 164 transitions. [2022-01-10 01:16:11,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 01:16:11,252 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:16:11,252 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] [2022-01-10 01:16:11,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 01:16:11,253 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:16:11,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:16:11,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1557003755, now seen corresponding path program 1 times [2022-01-10 01:16:11,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:16:11,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839620839] [2022-01-10 01:16:11,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:16:11,254 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:16:11,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:16:11,333 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 01:16:11,333 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:16:11,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839620839] [2022-01-10 01:16:11,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839620839] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:16:11,334 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:16:11,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:16:11,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912166613] [2022-01-10 01:16:11,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:16:11,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:16:11,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:16:11,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:16:11,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:16:11,335 INFO L87 Difference]: Start difference. First operand 124 states and 164 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:16:11,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:16:11,350 INFO L93 Difference]: Finished difference Result 254 states and 370 transitions. [2022-01-10 01:16:11,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:16:11,351 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2022-01-10 01:16:11,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:16:11,352 INFO L225 Difference]: With dead ends: 254 [2022-01-10 01:16:11,352 INFO L226 Difference]: Without dead ends: 186 [2022-01-10 01:16:11,352 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:16:11,353 INFO L933 BasicCegarLoop]: 258 mSDtfsCounter, 98 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:16:11,353 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 364 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:16:11,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2022-01-10 01:16:11,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 184. [2022-01-10 01:16:11,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 183 states have (on average 1.4207650273224044) internal successors, (260), 183 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:16:11,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 260 transitions. [2022-01-10 01:16:11,362 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 260 transitions. Word has length 90 [2022-01-10 01:16:11,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:16:11,362 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 260 transitions. [2022-01-10 01:16:11,363 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:16:11,363 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 260 transitions. [2022-01-10 01:16:11,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 01:16:11,363 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:16:11,364 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] [2022-01-10 01:16:11,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 01:16:11,364 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:16:11,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:16:11,364 INFO L85 PathProgramCache]: Analyzing trace with hash -309494901, now seen corresponding path program 1 times [2022-01-10 01:16:11,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:16:11,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761912671] [2022-01-10 01:16:11,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:16:11,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:16:11,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:16:11,442 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 01:16:11,442 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:16:11,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761912671] [2022-01-10 01:16:11,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761912671] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:16:11,443 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:16:11,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:16:11,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14940498] [2022-01-10 01:16:11,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:16:11,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:16:11,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:16:11,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:16:11,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:16:11,444 INFO L87 Difference]: Start difference. First operand 184 states and 260 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:16:11,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:16:11,462 INFO L93 Difference]: Finished difference Result 428 states and 648 transitions. [2022-01-10 01:16:11,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:16:11,463 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2022-01-10 01:16:11,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:16:11,464 INFO L225 Difference]: With dead ends: 428 [2022-01-10 01:16:11,464 INFO L226 Difference]: Without dead ends: 300 [2022-01-10 01:16:11,465 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:16:11,466 INFO L933 BasicCegarLoop]: 253 mSDtfsCounter, 94 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:16:11,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 363 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:16:11,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2022-01-10 01:16:11,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 298. [2022-01-10 01:16:11,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 297 states have (on average 1.4848484848484849) internal successors, (441), 297 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:16:11,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 441 transitions. [2022-01-10 01:16:11,479 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 441 transitions. Word has length 90 [2022-01-10 01:16:11,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:16:11,482 INFO L470 AbstractCegarLoop]: Abstraction has 298 states and 441 transitions. [2022-01-10 01:16:11,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:16:11,482 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 441 transitions. [2022-01-10 01:16:11,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 01:16:11,514 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:16:11,514 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] [2022-01-10 01:16:11,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 01:16:11,514 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:16:11,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:16:11,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1050927103, now seen corresponding path program 1 times [2022-01-10 01:16:11,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:16:11,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260630582] [2022-01-10 01:16:11,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:16:11,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:16:11,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:16:11,616 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 01:16:11,617 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:16:11,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260630582] [2022-01-10 01:16:11,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260630582] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:16:11,617 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:16:11,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:16:11,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53079624] [2022-01-10 01:16:11,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:16:11,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:16:11,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:16:11,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:16:11,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:16:11,620 INFO L87 Difference]: Start difference. First operand 298 states and 441 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:16:11,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:16:11,647 INFO L93 Difference]: Finished difference Result 758 states and 1171 transitions. [2022-01-10 01:16:11,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:16:11,647 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2022-01-10 01:16:11,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:16:11,649 INFO L225 Difference]: With dead ends: 758 [2022-01-10 01:16:11,649 INFO L226 Difference]: Without dead ends: 516 [2022-01-10 01:16:11,652 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:16:11,657 INFO L933 BasicCegarLoop]: 248 mSDtfsCounter, 90 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:16:11,657 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 362 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:16:11,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2022-01-10 01:16:11,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 514. [2022-01-10 01:16:11,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 514 states, 513 states have (on average 1.5224171539961013) internal successors, (781), 513 states have internal predecessors, (781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:16:11,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 781 transitions. [2022-01-10 01:16:11,686 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 781 transitions. Word has length 90 [2022-01-10 01:16:11,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:16:11,686 INFO L470 AbstractCegarLoop]: Abstraction has 514 states and 781 transitions. [2022-01-10 01:16:11,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:16:11,687 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 781 transitions. [2022-01-10 01:16:11,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 01:16:11,691 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:16:11,691 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] [2022-01-10 01:16:11,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 01:16:11,692 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:16:11,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:16:11,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1796509833, now seen corresponding path program 1 times [2022-01-10 01:16:11,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:16:11,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861983763] [2022-01-10 01:16:11,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:16:11,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:16:11,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:16:11,777 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 01:16:11,778 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:16:11,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861983763] [2022-01-10 01:16:11,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861983763] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:16:11,778 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:16:11,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:16:11,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154544819] [2022-01-10 01:16:11,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:16:11,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:16:11,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:16:11,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:16:11,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:16:11,781 INFO L87 Difference]: Start difference. First operand 514 states and 781 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:16:11,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:16:11,812 INFO L93 Difference]: Finished difference Result 1382 states and 2151 transitions. [2022-01-10 01:16:11,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:16:11,812 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2022-01-10 01:16:11,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:16:11,817 INFO L225 Difference]: With dead ends: 1382 [2022-01-10 01:16:11,817 INFO L226 Difference]: Without dead ends: 924 [2022-01-10 01:16:11,818 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:16:11,830 INFO L933 BasicCegarLoop]: 243 mSDtfsCounter, 86 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:16:11,832 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 361 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:16:11,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2022-01-10 01:16:11,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 922. [2022-01-10 01:16:11,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 922 states, 921 states have (on average 1.5385450597176982) internal successors, (1417), 921 states have internal predecessors, (1417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:16:11,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 922 states to 922 states and 1417 transitions. [2022-01-10 01:16:11,867 INFO L78 Accepts]: Start accepts. Automaton has 922 states and 1417 transitions. Word has length 90 [2022-01-10 01:16:11,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:16:11,868 INFO L470 AbstractCegarLoop]: Abstraction has 922 states and 1417 transitions. [2022-01-10 01:16:11,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:16:11,868 INFO L276 IsEmpty]: Start isEmpty. Operand 922 states and 1417 transitions. [2022-01-10 01:16:11,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 01:16:11,870 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:16:11,870 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] [2022-01-10 01:16:11,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 01:16:11,870 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:16:11,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:16:11,872 INFO L85 PathProgramCache]: Analyzing trace with hash -259221845, now seen corresponding path program 1 times [2022-01-10 01:16:11,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:16:11,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765089676] [2022-01-10 01:16:11,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:16:11,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:16:11,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:16:11,937 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 01:16:11,937 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:16:11,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765089676] [2022-01-10 01:16:11,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765089676] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:16:11,938 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:16:11,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:16:11,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50752516] [2022-01-10 01:16:11,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:16:11,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:16:11,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:16:11,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:16:11,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:16:11,939 INFO L87 Difference]: Start difference. First operand 922 states and 1417 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:16:11,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:16:11,990 INFO L93 Difference]: Finished difference Result 2558 states and 3979 transitions. [2022-01-10 01:16:11,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:16:11,991 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2022-01-10 01:16:11,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:16:11,996 INFO L225 Difference]: With dead ends: 2558 [2022-01-10 01:16:11,996 INFO L226 Difference]: Without dead ends: 1692 [2022-01-10 01:16:11,999 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:16:12,001 INFO L933 BasicCegarLoop]: 238 mSDtfsCounter, 82 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:16:12,001 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 360 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:16:12,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1692 states. [2022-01-10 01:16:12,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1692 to 1690. [2022-01-10 01:16:12,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1690 states, 1689 states have (on average 1.5399644760213145) internal successors, (2601), 1689 states have internal predecessors, (2601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:16:12,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1690 states to 1690 states and 2601 transitions. [2022-01-10 01:16:12,050 INFO L78 Accepts]: Start accepts. Automaton has 1690 states and 2601 transitions. Word has length 90 [2022-01-10 01:16:12,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:16:12,050 INFO L470 AbstractCegarLoop]: Abstraction has 1690 states and 2601 transitions. [2022-01-10 01:16:12,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:16:12,050 INFO L276 IsEmpty]: Start isEmpty. Operand 1690 states and 2601 transitions. [2022-01-10 01:16:12,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 01:16:12,051 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:16:12,051 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] [2022-01-10 01:16:12,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 01:16:12,051 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:16:12,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:16:12,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1420392415, now seen corresponding path program 1 times [2022-01-10 01:16:12,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:16:12,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434519108] [2022-01-10 01:16:12,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:16:12,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:16:12,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:16:12,095 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 01:16:12,095 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:16:12,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434519108] [2022-01-10 01:16:12,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434519108] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:16:12,096 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:16:12,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:16:12,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500340004] [2022-01-10 01:16:12,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:16:12,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:16:12,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:16:12,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:16:12,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:16:12,097 INFO L87 Difference]: Start difference. First operand 1690 states and 2601 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:16:12,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:16:12,193 INFO L93 Difference]: Finished difference Result 4766 states and 7371 transitions. [2022-01-10 01:16:12,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:16:12,194 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2022-01-10 01:16:12,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:16:12,202 INFO L225 Difference]: With dead ends: 4766 [2022-01-10 01:16:12,202 INFO L226 Difference]: Without dead ends: 3132 [2022-01-10 01:16:12,204 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:16:12,204 INFO L933 BasicCegarLoop]: 233 mSDtfsCounter, 78 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:16:12,205 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 359 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:16:12,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3132 states. [2022-01-10 01:16:12,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3132 to 3130. [2022-01-10 01:16:12,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3130 states, 3129 states have (on average 1.531799296899968) internal successors, (4793), 3129 states have internal predecessors, (4793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:16:12,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3130 states to 3130 states and 4793 transitions. [2022-01-10 01:16:12,298 INFO L78 Accepts]: Start accepts. Automaton has 3130 states and 4793 transitions. Word has length 90 [2022-01-10 01:16:12,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:16:12,298 INFO L470 AbstractCegarLoop]: Abstraction has 3130 states and 4793 transitions. [2022-01-10 01:16:12,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:16:12,299 INFO L276 IsEmpty]: Start isEmpty. Operand 3130 states and 4793 transitions. [2022-01-10 01:16:12,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 01:16:12,299 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:16:12,299 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] [2022-01-10 01:16:12,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 01:16:12,300 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:16:12,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:16:12,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1758185557, now seen corresponding path program 1 times [2022-01-10 01:16:12,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:16:12,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231872731] [2022-01-10 01:16:12,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:16:12,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:16:12,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:16:12,367 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 01:16:12,368 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:16:12,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231872731] [2022-01-10 01:16:12,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231872731] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:16:12,368 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:16:12,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:16:12,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562197924] [2022-01-10 01:16:12,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:16:12,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:16:12,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:16:12,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:16:12,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:16:12,370 INFO L87 Difference]: Start difference. First operand 3130 states and 4793 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:16:12,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:16:12,549 INFO L93 Difference]: Finished difference Result 8894 states and 13627 transitions. [2022-01-10 01:16:12,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:16:12,550 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2022-01-10 01:16:12,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:16:12,567 INFO L225 Difference]: With dead ends: 8894 [2022-01-10 01:16:12,567 INFO L226 Difference]: Without dead ends: 5820 [2022-01-10 01:16:12,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:16:12,575 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 74 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:16:12,575 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 358 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:16:12,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5820 states. [2022-01-10 01:16:12,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5820 to 5818. [2022-01-10 01:16:12,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5818 states, 5817 states have (on average 1.5171050369606327) internal successors, (8825), 5817 states have internal predecessors, (8825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:16:12,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5818 states to 5818 states and 8825 transitions. [2022-01-10 01:16:12,835 INFO L78 Accepts]: Start accepts. Automaton has 5818 states and 8825 transitions. Word has length 90 [2022-01-10 01:16:12,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:16:12,835 INFO L470 AbstractCegarLoop]: Abstraction has 5818 states and 8825 transitions. [2022-01-10 01:16:12,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:16:12,835 INFO L276 IsEmpty]: Start isEmpty. Operand 5818 states and 8825 transitions. [2022-01-10 01:16:12,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 01:16:12,836 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:16:12,836 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] [2022-01-10 01:16:12,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 01:16:12,836 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:16:12,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:16:12,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1318796341, now seen corresponding path program 1 times [2022-01-10 01:16:12,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:16:12,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071799325] [2022-01-10 01:16:12,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:16:12,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:16:12,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:16:12,912 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 01:16:12,913 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:16:12,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071799325] [2022-01-10 01:16:12,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071799325] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:16:12,913 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:16:12,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 01:16:12,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770456462] [2022-01-10 01:16:12,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:16:12,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 01:16:12,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:16:12,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 01:16:12,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-10 01:16:12,914 INFO L87 Difference]: Start difference. First operand 5818 states and 8825 transitions. Second operand has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:16:15,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:16:15,615 INFO L93 Difference]: Finished difference Result 86486 states and 131591 transitions. [2022-01-10 01:16:15,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 01:16:15,617 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2022-01-10 01:16:15,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:16:15,809 INFO L225 Difference]: With dead ends: 86486 [2022-01-10 01:16:15,809 INFO L226 Difference]: Without dead ends: 80724 [2022-01-10 01:16:15,843 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2022-01-10 01:16:15,844 INFO L933 BasicCegarLoop]: 158 mSDtfsCounter, 3049 mSDsluCounter, 1641 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3049 SdHoareTripleChecker+Valid, 1799 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:16:15,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3049 Valid, 1799 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:16:15,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80724 states. [2022-01-10 01:16:17,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80724 to 11578. [2022-01-10 01:16:17,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11578 states, 11577 states have (on average 1.4975382223373932) internal successors, (17337), 11577 states have internal predecessors, (17337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:16:17,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11578 states to 11578 states and 17337 transitions. [2022-01-10 01:16:17,175 INFO L78 Accepts]: Start accepts. Automaton has 11578 states and 17337 transitions. Word has length 90 [2022-01-10 01:16:17,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:16:17,175 INFO L470 AbstractCegarLoop]: Abstraction has 11578 states and 17337 transitions. [2022-01-10 01:16:17,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:16:17,175 INFO L276 IsEmpty]: Start isEmpty. Operand 11578 states and 17337 transitions. [2022-01-10 01:16:17,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-01-10 01:16:17,176 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:16:17,176 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] [2022-01-10 01:16:17,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 01:16:17,176 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:16:17,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:16:17,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1697127869, now seen corresponding path program 1 times [2022-01-10 01:16:17,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:16:17,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213381491] [2022-01-10 01:16:17,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:16:17,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:16:17,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:16:17,402 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 01:16:17,403 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:16:17,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213381491] [2022-01-10 01:16:17,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213381491] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:16:17,403 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:16:17,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 01:16:17,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465764255] [2022-01-10 01:16:17,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:16:17,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 01:16:17,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:16:17,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 01:16:17,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-01-10 01:16:17,404 INFO L87 Difference]: Start difference. First operand 11578 states and 17337 transitions. Second operand has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 9 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:16:18,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:16:18,429 INFO L93 Difference]: Finished difference Result 23102 states and 34619 transitions. [2022-01-10 01:16:18,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 01:16:18,429 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 9 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-01-10 01:16:18,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:16:18,449 INFO L225 Difference]: With dead ends: 23102 [2022-01-10 01:16:18,449 INFO L226 Difference]: Without dead ends: 11580 [2022-01-10 01:16:18,458 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2022-01-10 01:16:18,459 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 883 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 883 SdHoareTripleChecker+Valid, 785 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:16:18,459 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [883 Valid, 785 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:16:18,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11580 states. [2022-01-10 01:16:19,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11580 to 11578. [2022-01-10 01:16:19,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11578 states, 11577 states have (on average 1.4864818173965622) internal successors, (17209), 11577 states have internal predecessors, (17209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:16:19,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11578 states to 11578 states and 17209 transitions. [2022-01-10 01:16:19,132 INFO L78 Accepts]: Start accepts. Automaton has 11578 states and 17209 transitions. Word has length 92 [2022-01-10 01:16:19,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:16:19,132 INFO L470 AbstractCegarLoop]: Abstraction has 11578 states and 17209 transitions. [2022-01-10 01:16:19,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 9 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:16:19,133 INFO L276 IsEmpty]: Start isEmpty. Operand 11578 states and 17209 transitions. [2022-01-10 01:16:19,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-01-10 01:16:19,133 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:16:19,133 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] [2022-01-10 01:16:19,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 01:16:19,135 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:16:19,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:16:19,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1763621381, now seen corresponding path program 1 times [2022-01-10 01:16:19,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:16:19,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736445929] [2022-01-10 01:16:19,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:16:19,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:16:19,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:16:19,178 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 01:16:19,178 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:16:19,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736445929] [2022-01-10 01:16:19,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736445929] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:16:19,179 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:16:19,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:16:19,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957729893] [2022-01-10 01:16:19,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:16:19,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:16:19,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:16:19,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:16:19,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:16:19,180 INFO L87 Difference]: Start difference. First operand 11578 states and 17209 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:16:20,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:16:20,169 INFO L93 Difference]: Finished difference Result 28544 states and 42429 transitions. [2022-01-10 01:16:20,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:16:20,169 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-01-10 01:16:20,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:16:20,190 INFO L225 Difference]: With dead ends: 28544 [2022-01-10 01:16:20,190 INFO L226 Difference]: Without dead ends: 17022 [2022-01-10 01:16:20,212 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:16:20,213 INFO L933 BasicCegarLoop]: 211 mSDtfsCounter, 66 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:16:20,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 314 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:16:20,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17022 states. [2022-01-10 01:16:21,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17022 to 17020. [2022-01-10 01:16:21,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17020 states, 17019 states have (on average 1.473823373876256) internal successors, (25083), 17019 states have internal predecessors, (25083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:16:21,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17020 states to 17020 states and 25083 transitions. [2022-01-10 01:16:21,410 INFO L78 Accepts]: Start accepts. Automaton has 17020 states and 25083 transitions. Word has length 92 [2022-01-10 01:16:21,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:16:21,410 INFO L470 AbstractCegarLoop]: Abstraction has 17020 states and 25083 transitions. [2022-01-10 01:16:21,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:16:21,411 INFO L276 IsEmpty]: Start isEmpty. Operand 17020 states and 25083 transitions. [2022-01-10 01:16:21,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-01-10 01:16:21,411 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:16:21,411 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] [2022-01-10 01:16:21,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 01:16:21,412 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:16:21,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:16:21,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1486079254, now seen corresponding path program 1 times [2022-01-10 01:16:21,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:16:21,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123616111] [2022-01-10 01:16:21,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:16:21,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:16:21,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:16:21,481 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 01:16:21,482 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:16:21,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123616111] [2022-01-10 01:16:21,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123616111] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:16:21,482 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:16:21,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 01:16:21,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194655782] [2022-01-10 01:16:21,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:16:21,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 01:16:21,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:16:21,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 01:16:21,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 01:16:21,483 INFO L87 Difference]: Start difference. First operand 17020 states and 25083 transitions. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:16:22,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:16:22,664 INFO L93 Difference]: Finished difference Result 33982 states and 50108 transitions. [2022-01-10 01:16:22,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 01:16:22,665 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2022-01-10 01:16:22,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:16:22,688 INFO L225 Difference]: With dead ends: 33982 [2022-01-10 01:16:22,688 INFO L226 Difference]: Without dead ends: 17020 [2022-01-10 01:16:22,701 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-01-10 01:16:22,701 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 448 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:16:22,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [448 Valid, 209 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:16:22,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17020 states. [2022-01-10 01:16:23,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17020 to 17020. [2022-01-10 01:16:23,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17020 states, 17019 states have (on average 1.4625418649744404) internal successors, (24891), 17019 states have internal predecessors, (24891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:16:23,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17020 states to 17020 states and 24891 transitions. [2022-01-10 01:16:23,705 INFO L78 Accepts]: Start accepts. Automaton has 17020 states and 24891 transitions. Word has length 93 [2022-01-10 01:16:23,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:16:23,705 INFO L470 AbstractCegarLoop]: Abstraction has 17020 states and 24891 transitions. [2022-01-10 01:16:23,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:16:23,706 INFO L276 IsEmpty]: Start isEmpty. Operand 17020 states and 24891 transitions. [2022-01-10 01:16:23,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-01-10 01:16:23,706 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:16:23,706 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] [2022-01-10 01:16:23,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 01:16:23,706 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:16:23,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:16:23,707 INFO L85 PathProgramCache]: Analyzing trace with hash 202864488, now seen corresponding path program 1 times [2022-01-10 01:16:23,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:16:23,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691882327] [2022-01-10 01:16:23,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:16:23,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:16:23,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:16:23,748 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 01:16:23,749 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:16:23,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691882327] [2022-01-10 01:16:23,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691882327] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:16:23,749 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:16:23,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 01:16:23,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204310361] [2022-01-10 01:16:23,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:16:23,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 01:16:23,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:16:23,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 01:16:23,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 01:16:23,750 INFO L87 Difference]: Start difference. First operand 17020 states and 24891 transitions. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:16:24,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:16:24,886 INFO L93 Difference]: Finished difference Result 33982 states and 49724 transitions. [2022-01-10 01:16:24,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 01:16:24,887 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2022-01-10 01:16:24,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:16:24,905 INFO L225 Difference]: With dead ends: 33982 [2022-01-10 01:16:24,905 INFO L226 Difference]: Without dead ends: 17020 [2022-01-10 01:16:24,918 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-01-10 01:16:24,919 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 557 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 557 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:16:24,919 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [557 Valid, 195 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:16:24,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17020 states. [2022-01-10 01:16:26,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17020 to 17020. [2022-01-10 01:16:26,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17020 states, 17019 states have (on average 1.4512603560726247) internal successors, (24699), 17019 states have internal predecessors, (24699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:16:26,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17020 states to 17020 states and 24699 transitions. [2022-01-10 01:16:26,208 INFO L78 Accepts]: Start accepts. Automaton has 17020 states and 24699 transitions. Word has length 93 [2022-01-10 01:16:26,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:16:26,209 INFO L470 AbstractCegarLoop]: Abstraction has 17020 states and 24699 transitions. [2022-01-10 01:16:26,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:16:26,209 INFO L276 IsEmpty]: Start isEmpty. Operand 17020 states and 24699 transitions. [2022-01-10 01:16:26,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-01-10 01:16:26,209 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:16:26,210 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] [2022-01-10 01:16:26,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 01:16:26,210 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:16:26,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:16:26,210 INFO L85 PathProgramCache]: Analyzing trace with hash 2008302822, now seen corresponding path program 1 times [2022-01-10 01:16:26,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:16:26,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612858581] [2022-01-10 01:16:26,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:16:26,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:16:26,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:16:26,253 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 01:16:26,253 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:16:26,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612858581] [2022-01-10 01:16:26,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612858581] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:16:26,253 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:16:26,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 01:16:26,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980044312] [2022-01-10 01:16:26,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:16:26,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 01:16:26,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:16:26,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 01:16:26,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:16:26,254 INFO L87 Difference]: Start difference. First operand 17020 states and 24699 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:16:28,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:16:28,332 INFO L93 Difference]: Finished difference Result 31519 states and 45297 transitions. [2022-01-10 01:16:28,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 01:16:28,332 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2022-01-10 01:16:28,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:16:28,369 INFO L225 Difference]: With dead ends: 31519 [2022-01-10 01:16:28,369 INFO L226 Difference]: Without dead ends: 31517 [2022-01-10 01:16:28,376 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 01:16:28,376 INFO L933 BasicCegarLoop]: 197 mSDtfsCounter, 289 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 676 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:16:28,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [289 Valid, 676 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:16:28,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31517 states. [2022-01-10 01:16:29,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31517 to 17788. [2022-01-10 01:16:29,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17788 states, 17787 states have (on average 1.4281778827233373) internal successors, (25403), 17787 states have internal predecessors, (25403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:16:29,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17788 states to 17788 states and 25403 transitions. [2022-01-10 01:16:29,829 INFO L78 Accepts]: Start accepts. Automaton has 17788 states and 25403 transitions. Word has length 93 [2022-01-10 01:16:29,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:16:29,829 INFO L470 AbstractCegarLoop]: Abstraction has 17788 states and 25403 transitions. [2022-01-10 01:16:29,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:16:29,829 INFO L276 IsEmpty]: Start isEmpty. Operand 17788 states and 25403 transitions. [2022-01-10 01:16:29,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-01-10 01:16:29,840 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:16:29,840 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:16:29,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 01:16:29,840 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:16:29,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:16:29,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1787662099, now seen corresponding path program 1 times [2022-01-10 01:16:29,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:16:29,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045178429] [2022-01-10 01:16:29,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:16:29,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:16:29,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:16:29,910 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-10 01:16:29,911 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:16:29,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045178429] [2022-01-10 01:16:29,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045178429] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:16:29,911 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:16:29,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 01:16:29,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462514781] [2022-01-10 01:16:29,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:16:29,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 01:16:29,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:16:29,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 01:16:29,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 01:16:29,912 INFO L87 Difference]: Start difference. First operand 17788 states and 25403 transitions. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:16:38,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:16:38,820 INFO L93 Difference]: Finished difference Result 145356 states and 207555 transitions. [2022-01-10 01:16:38,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 01:16:38,821 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2022-01-10 01:16:38,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:16:39,007 INFO L225 Difference]: With dead ends: 145356 [2022-01-10 01:16:39,007 INFO L226 Difference]: Without dead ends: 127626 [2022-01-10 01:16:39,048 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-01-10 01:16:39,048 INFO L933 BasicCegarLoop]: 258 mSDtfsCounter, 2142 mSDsluCounter, 953 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2142 SdHoareTripleChecker+Valid, 1211 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:16:39,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2142 Valid, 1211 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:16:39,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127626 states. [2022-01-10 01:16:42,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127626 to 35516. [2022-01-10 01:16:42,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35516 states, 35515 states have (on average 1.4234830353371815) internal successors, (50555), 35515 states have internal predecessors, (50555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:16:42,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35516 states to 35516 states and 50555 transitions. [2022-01-10 01:16:42,873 INFO L78 Accepts]: Start accepts. Automaton has 35516 states and 50555 transitions. Word has length 129 [2022-01-10 01:16:42,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:16:42,874 INFO L470 AbstractCegarLoop]: Abstraction has 35516 states and 50555 transitions. [2022-01-10 01:16:42,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:16:42,874 INFO L276 IsEmpty]: Start isEmpty. Operand 35516 states and 50555 transitions. [2022-01-10 01:16:42,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-01-10 01:16:42,884 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:16:42,885 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:16:42,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 01:16:42,885 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:16:42,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:16:42,885 INFO L85 PathProgramCache]: Analyzing trace with hash 18879283, now seen corresponding path program 1 times [2022-01-10 01:16:42,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:16:42,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644382985] [2022-01-10 01:16:42,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:16:42,886 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:16:42,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:16:43,017 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-10 01:16:43,017 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:16:43,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644382985] [2022-01-10 01:16:43,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644382985] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:16:43,018 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:16:43,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 01:16:43,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778755701] [2022-01-10 01:16:43,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:16:43,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 01:16:43,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:16:43,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 01:16:43,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 01:16:43,019 INFO L87 Difference]: Start difference. First operand 35516 states and 50555 transitions. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:16:54,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:16:54,269 INFO L93 Difference]: Finished difference Result 163084 states and 232707 transitions. [2022-01-10 01:16:54,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 01:16:54,272 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2022-01-10 01:16:54,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:16:54,496 INFO L225 Difference]: With dead ends: 163084 [2022-01-10 01:16:54,496 INFO L226 Difference]: Without dead ends: 145354 [2022-01-10 01:16:54,547 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-01-10 01:16:54,548 INFO L933 BasicCegarLoop]: 258 mSDtfsCounter, 1893 mSDsluCounter, 1005 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1893 SdHoareTripleChecker+Valid, 1263 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:16:54,549 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1893 Valid, 1263 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:16:54,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145354 states. [2022-01-10 01:17:00,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145354 to 62140. [2022-01-10 01:17:00,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62140 states, 62139 states have (on average 1.4181592880477638) internal successors, (88123), 62139 states have internal predecessors, (88123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:17:01,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62140 states to 62140 states and 88123 transitions. [2022-01-10 01:17:01,021 INFO L78 Accepts]: Start accepts. Automaton has 62140 states and 88123 transitions. Word has length 129 [2022-01-10 01:17:01,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:17:01,022 INFO L470 AbstractCegarLoop]: Abstraction has 62140 states and 88123 transitions. [2022-01-10 01:17:01,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:17:01,022 INFO L276 IsEmpty]: Start isEmpty. Operand 62140 states and 88123 transitions. [2022-01-10 01:17:01,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-01-10 01:17:01,054 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:17:01,054 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:17:01,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 01:17:01,054 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:17:01,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:17:01,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1150519123, now seen corresponding path program 1 times [2022-01-10 01:17:01,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:17:01,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020425814] [2022-01-10 01:17:01,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:17:01,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:17:01,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:17:01,233 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-10 01:17:01,233 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:17:01,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020425814] [2022-01-10 01:17:01,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020425814] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:17:01,234 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:17:01,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 01:17:01,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105547602] [2022-01-10 01:17:01,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:17:01,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 01:17:01,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:17:01,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 01:17:01,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 01:17:01,235 INFO L87 Difference]: Start difference. First operand 62140 states and 88123 transitions. Second operand has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:17:14,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:17:14,984 INFO L93 Difference]: Finished difference Result 180812 states and 257859 transitions. [2022-01-10 01:17:14,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 01:17:14,985 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2022-01-10 01:17:14,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:17:15,231 INFO L225 Difference]: With dead ends: 180812 [2022-01-10 01:17:15,231 INFO L226 Difference]: Without dead ends: 163082 [2022-01-10 01:17:15,267 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-01-10 01:17:15,268 INFO L933 BasicCegarLoop]: 258 mSDtfsCounter, 1807 mSDsluCounter, 1057 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1807 SdHoareTripleChecker+Valid, 1315 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:17:15,268 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1807 Valid, 1315 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:17:15,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163082 states.