/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/eca-rers2012/Problem12_label57.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 00:07:48,708 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 00:07:48,709 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 00:07:48,764 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 00:07:48,766 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 00:07:48,768 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 00:07:48,771 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 00:07:48,775 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 00:07:48,776 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 00:07:48,777 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 00:07:48,777 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 00:07:48,778 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 00:07:48,778 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 00:07:48,779 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 00:07:48,779 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 00:07:48,780 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 00:07:48,780 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 00:07:48,781 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 00:07:48,782 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 00:07:48,783 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 00:07:48,784 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 00:07:48,790 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 00:07:48,792 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 00:07:48,793 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 00:07:48,798 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 00:07:48,802 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 00:07:48,802 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 00:07:48,803 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 00:07:48,803 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 00:07:48,804 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 00:07:48,804 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 00:07:48,804 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 00:07:48,805 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 00:07:48,805 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 00:07:48,806 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 00:07:48,806 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 00:07:48,806 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 00:07:48,806 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 00:07:48,806 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 00:07:48,807 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 00:07:48,807 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 00:07:48,810 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 00:07:48,830 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 00:07:48,830 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 00:07:48,831 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 00:07:48,831 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 00:07:48,831 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 00:07:48,832 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 00:07:48,832 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 00:07:48,832 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 00:07:48,832 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 00:07:48,832 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 00:07:48,833 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 00:07:48,833 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 00:07:48,833 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 00:07:48,833 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 00:07:48,833 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 00:07:48,833 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 00:07:48,834 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 00:07:48,834 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 00:07:48,834 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 00:07:48,834 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 00:07:48,834 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 00:07:48,834 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 00:07:48,834 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 00:07:48,834 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 00:07:48,834 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 00:07:48,834 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 00:07:48,834 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 00:07:48,834 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 00:07:48,835 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 00:07:48,835 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 00:07:48,835 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 00:07:48,976 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 00:07:48,989 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 00:07:48,991 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 00:07:48,992 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 00:07:48,993 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 00:07:48,994 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label57.c [2022-01-10 00:07:49,051 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e302eef2e/052760aac0b243e4a5707532f01af8ef/FLAGe511ee5b8 [2022-01-10 00:07:49,654 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 00:07:49,654 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label57.c [2022-01-10 00:07:49,678 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e302eef2e/052760aac0b243e4a5707532f01af8ef/FLAGe511ee5b8 [2022-01-10 00:07:49,767 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e302eef2e/052760aac0b243e4a5707532f01af8ef [2022-01-10 00:07:49,770 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 00:07:49,772 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 00:07:49,773 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 00:07:49,773 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 00:07:49,775 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 00:07:49,776 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:07:49" (1/1) ... [2022-01-10 00:07:49,777 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2769e238 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:07:49, skipping insertion in model container [2022-01-10 00:07:49,777 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:07:49" (1/1) ... [2022-01-10 00:07:49,782 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 00:07:49,866 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 00:07:50,119 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label57.c[4795,4808] [2022-01-10 00:07:50,665 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 00:07:50,671 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 00:07:50,695 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label57.c[4795,4808] [2022-01-10 00:07:51,021 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 00:07:51,041 INFO L208 MainTranslator]: Completed translation [2022-01-10 00:07:51,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:07:51 WrapperNode [2022-01-10 00:07:51,043 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 00:07:51,044 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 00:07:51,045 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 00:07:51,045 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 00:07:51,051 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:07:51" (1/1) ... [2022-01-10 00:07:51,104 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:07:51" (1/1) ... [2022-01-10 00:07:51,423 INFO L137 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4757 [2022-01-10 00:07:51,424 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 00:07:51,425 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 00:07:51,425 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 00:07:51,425 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 00:07:51,430 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:07:51" (1/1) ... [2022-01-10 00:07:51,430 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:07:51" (1/1) ... [2022-01-10 00:07:51,454 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:07:51" (1/1) ... [2022-01-10 00:07:51,454 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:07:51" (1/1) ... [2022-01-10 00:07:51,552 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:07:51" (1/1) ... [2022-01-10 00:07:51,576 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:07:51" (1/1) ... [2022-01-10 00:07:51,595 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:07:51" (1/1) ... [2022-01-10 00:07:51,734 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 00:07:51,735 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 00:07:51,735 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 00:07:51,735 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 00:07:51,748 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:07:51" (1/1) ... [2022-01-10 00:07:51,753 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 00:07:51,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:07:51,772 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 00:07:51,774 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 00:07:51,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 00:07:51,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-10 00:07:51,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 00:07:51,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 00:07:51,865 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 00:07:51,866 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 00:07:55,143 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 00:07:55,154 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 00:07:55,155 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 00:07:55,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:07:55 BoogieIcfgContainer [2022-01-10 00:07:55,157 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 00:07:55,158 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 00:07:55,158 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 00:07:55,161 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 00:07:55,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:07:49" (1/3) ... [2022-01-10 00:07:55,162 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@705340bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:07:55, skipping insertion in model container [2022-01-10 00:07:55,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:07:51" (2/3) ... [2022-01-10 00:07:55,162 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@705340bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:07:55, skipping insertion in model container [2022-01-10 00:07:55,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:07:55" (3/3) ... [2022-01-10 00:07:55,163 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label57.c [2022-01-10 00:07:55,167 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 00:07:55,167 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 00:07:55,202 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 00:07:55,206 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 00:07:55,207 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 00:07:55,228 INFO L276 IsEmpty]: Start isEmpty. Operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 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 00:07:55,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-10 00:07:55,234 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:07:55,235 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] [2022-01-10 00:07:55,235 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:07:55,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:07:55,239 INFO L85 PathProgramCache]: Analyzing trace with hash 2088660649, now seen corresponding path program 1 times [2022-01-10 00:07:55,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:07:55,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485671905] [2022-01-10 00:07:55,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:07:55,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:07:55,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:07:55,447 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 00:07:55,447 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:07:55,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485671905] [2022-01-10 00:07:55,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485671905] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:07:55,448 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:07:55,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:07:55,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988108088] [2022-01-10 00:07:55,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:07:55,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:07:55,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:07:55,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:07:55,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:07:55,480 INFO L87 Difference]: Start difference. First operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 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 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 2 states have internal predecessors, (37), 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 00:07:58,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:07:58,778 INFO L93 Difference]: Finished difference Result 2404 states and 4645 transitions. [2022-01-10 00:07:58,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:07:58,782 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 2 states have internal predecessors, (37), 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 37 [2022-01-10 00:07:58,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:07:58,803 INFO L225 Difference]: With dead ends: 2404 [2022-01-10 00:07:58,803 INFO L226 Difference]: Without dead ends: 1506 [2022-01-10 00:07:58,810 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 00:07:58,813 INFO L933 BasicCegarLoop]: 515 mSDtfsCounter, 783 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 2337 mSolverCounterSat, 696 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 783 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 3033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 696 IncrementalHoareTripleChecker+Valid, 2337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-01-10 00:07:58,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [783 Valid, 525 Invalid, 3033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [696 Valid, 2337 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-01-10 00:07:58,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1506 states. [2022-01-10 00:07:58,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1506 to 1506. [2022-01-10 00:07:58,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 1505 states have (on average 1.6066445182724252) internal successors, (2418), 1505 states have internal predecessors, (2418), 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 00:07:58,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 2418 transitions. [2022-01-10 00:07:58,904 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 2418 transitions. Word has length 37 [2022-01-10 00:07:58,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:07:58,904 INFO L470 AbstractCegarLoop]: Abstraction has 1506 states and 2418 transitions. [2022-01-10 00:07:58,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 2 states have internal predecessors, (37), 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 00:07:58,904 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 2418 transitions. [2022-01-10 00:07:58,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 00:07:58,907 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:07:58,907 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:07:58,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 00:07:58,907 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:07:58,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:07:58,908 INFO L85 PathProgramCache]: Analyzing trace with hash 581957541, now seen corresponding path program 1 times [2022-01-10 00:07:58,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:07:58,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126008321] [2022-01-10 00:07:58,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:07:58,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:07:58,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:07:58,992 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:07:58,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:07:58,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126008321] [2022-01-10 00:07:58,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126008321] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:07:58,992 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:07:58,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:07:58,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613850440] [2022-01-10 00:07:58,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:07:58,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:07:58,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:07:58,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:07:58,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:07:58,995 INFO L87 Difference]: Start difference. First operand 1506 states and 2418 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 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 00:08:01,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:08:01,823 INFO L93 Difference]: Finished difference Result 4512 states and 7249 transitions. [2022-01-10 00:08:01,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:08:01,823 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 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 112 [2022-01-10 00:08:01,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:08:01,833 INFO L225 Difference]: With dead ends: 4512 [2022-01-10 00:08:01,834 INFO L226 Difference]: Without dead ends: 3008 [2022-01-10 00:08:01,839 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 00:08:01,841 INFO L933 BasicCegarLoop]: 443 mSDtfsCounter, 774 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1995 mSolverCounterSat, 935 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 774 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 2930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 935 IncrementalHoareTripleChecker+Valid, 1995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-01-10 00:08:01,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [774 Valid, 449 Invalid, 2930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [935 Valid, 1995 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-01-10 00:08:01,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3008 states. [2022-01-10 00:08:01,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3008 to 3008. [2022-01-10 00:08:01,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3008 states, 3007 states have (on average 1.4156967076820752) internal successors, (4257), 3007 states have internal predecessors, (4257), 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 00:08:01,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3008 states to 3008 states and 4257 transitions. [2022-01-10 00:08:01,879 INFO L78 Accepts]: Start accepts. Automaton has 3008 states and 4257 transitions. Word has length 112 [2022-01-10 00:08:01,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:08:01,882 INFO L470 AbstractCegarLoop]: Abstraction has 3008 states and 4257 transitions. [2022-01-10 00:08:01,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 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 00:08:01,882 INFO L276 IsEmpty]: Start isEmpty. Operand 3008 states and 4257 transitions. [2022-01-10 00:08:01,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-01-10 00:08:01,891 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:08:01,891 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:08:01,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 00:08:01,892 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:08:01,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:08:01,893 INFO L85 PathProgramCache]: Analyzing trace with hash -483690038, now seen corresponding path program 1 times [2022-01-10 00:08:01,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:08:01,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592547501] [2022-01-10 00:08:01,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:08:01,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:08:01,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:08:02,023 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:08:02,023 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:08:02,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592547501] [2022-01-10 00:08:02,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592547501] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:08:02,023 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:08:02,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:08:02,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583781628] [2022-01-10 00:08:02,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:08:02,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 00:08:02,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:08:02,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 00:08:02,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:08:02,025 INFO L87 Difference]: Start difference. First operand 3008 states and 4257 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 3 states have internal predecessors, (114), 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 00:08:06,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:08:06,011 INFO L93 Difference]: Finished difference Result 9769 states and 13601 transitions. [2022-01-10 00:08:06,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 00:08:06,011 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 3 states have internal predecessors, (114), 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 114 [2022-01-10 00:08:06,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:08:06,030 INFO L225 Difference]: With dead ends: 9769 [2022-01-10 00:08:06,030 INFO L226 Difference]: Without dead ends: 6763 [2022-01-10 00:08:06,036 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 00:08:06,042 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 2182 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 4712 mSolverCounterSat, 747 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2182 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 5459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 747 IncrementalHoareTripleChecker+Valid, 4712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-01-10 00:08:06,043 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2182 Valid, 164 Invalid, 5459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [747 Valid, 4712 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-01-10 00:08:06,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6763 states. [2022-01-10 00:08:06,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6763 to 6763. [2022-01-10 00:08:06,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6763 states, 6762 states have (on average 1.3510795622596865) internal successors, (9136), 6762 states have internal predecessors, (9136), 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 00:08:06,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6763 states to 6763 states and 9136 transitions. [2022-01-10 00:08:06,162 INFO L78 Accepts]: Start accepts. Automaton has 6763 states and 9136 transitions. Word has length 114 [2022-01-10 00:08:06,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:08:06,164 INFO L470 AbstractCegarLoop]: Abstraction has 6763 states and 9136 transitions. [2022-01-10 00:08:06,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 3 states have internal predecessors, (114), 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 00:08:06,164 INFO L276 IsEmpty]: Start isEmpty. Operand 6763 states and 9136 transitions. [2022-01-10 00:08:06,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-01-10 00:08:06,166 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:08:06,166 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:08:06,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 00:08:06,167 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:08:06,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:08:06,168 INFO L85 PathProgramCache]: Analyzing trace with hash 202014314, now seen corresponding path program 1 times [2022-01-10 00:08:06,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:08:06,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903276286] [2022-01-10 00:08:06,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:08:06,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:08:06,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:08:06,310 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-10 00:08:06,310 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:08:06,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903276286] [2022-01-10 00:08:06,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903276286] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 00:08:06,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756498200] [2022-01-10 00:08:06,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:08:06,311 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:08:06,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:08:06,312 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 00:08:06,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 00:08:06,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:08:06,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 00:08:06,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 00:08:06,758 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-01-10 00:08:06,759 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 00:08:06,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756498200] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:08:06,759 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 00:08:06,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2022-01-10 00:08:06,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100251992] [2022-01-10 00:08:06,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:08:06,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:08:06,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:08:06,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:08:06,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 00:08:06,761 INFO L87 Difference]: Start difference. First operand 6763 states and 9136 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 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 00:08:08,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:08:08,911 INFO L93 Difference]: Finished difference Result 18781 states and 25889 transitions. [2022-01-10 00:08:08,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:08:08,912 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 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 178 [2022-01-10 00:08:08,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:08:08,945 INFO L225 Difference]: With dead ends: 18781 [2022-01-10 00:08:08,946 INFO L226 Difference]: Without dead ends: 12771 [2022-01-10 00:08:08,952 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 00:08:08,953 INFO L933 BasicCegarLoop]: 606 mSDtfsCounter, 635 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2416 mSolverCounterSat, 585 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 635 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 3001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 585 IncrementalHoareTripleChecker+Valid, 2416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-10 00:08:08,954 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [635 Valid, 613 Invalid, 3001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [585 Valid, 2416 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-01-10 00:08:08,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12771 states. [2022-01-10 00:08:09,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12771 to 12020. [2022-01-10 00:08:09,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12020 states, 12019 states have (on average 1.2758964972127464) internal successors, (15335), 12019 states have internal predecessors, (15335), 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 00:08:09,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12020 states to 12020 states and 15335 transitions. [2022-01-10 00:08:09,129 INFO L78 Accepts]: Start accepts. Automaton has 12020 states and 15335 transitions. Word has length 178 [2022-01-10 00:08:09,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:08:09,130 INFO L470 AbstractCegarLoop]: Abstraction has 12020 states and 15335 transitions. [2022-01-10 00:08:09,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 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 00:08:09,130 INFO L276 IsEmpty]: Start isEmpty. Operand 12020 states and 15335 transitions. [2022-01-10 00:08:09,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-01-10 00:08:09,132 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:08:09,132 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:08:09,163 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-10 00:08:09,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:08:09,361 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:08:09,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:08:09,362 INFO L85 PathProgramCache]: Analyzing trace with hash -667565150, now seen corresponding path program 1 times [2022-01-10 00:08:09,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:08:09,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181258749] [2022-01-10 00:08:09,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:08:09,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:08:09,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:08:09,474 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 00:08:09,475 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:08:09,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181258749] [2022-01-10 00:08:09,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181258749] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:08:09,475 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:08:09,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:08:09,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881605265] [2022-01-10 00:08:09,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:08:09,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 00:08:09,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:08:09,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 00:08:09,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:08:09,477 INFO L87 Difference]: Start difference. First operand 12020 states and 15335 transitions. Second operand has 4 states, 4 states have (on average 47.25) internal successors, (189), 3 states have internal predecessors, (189), 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 00:08:12,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:08:12,150 INFO L93 Difference]: Finished difference Result 27830 states and 35168 transitions. [2022-01-10 00:08:12,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 00:08:12,151 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.25) internal successors, (189), 3 states have internal predecessors, (189), 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 189 [2022-01-10 00:08:12,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:08:12,192 INFO L225 Difference]: With dead ends: 27830 [2022-01-10 00:08:12,192 INFO L226 Difference]: Without dead ends: 16526 [2022-01-10 00:08:12,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:08:12,204 INFO L933 BasicCegarLoop]: 694 mSDtfsCounter, 704 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 3107 mSolverCounterSat, 272 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 3379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 272 IncrementalHoareTripleChecker+Valid, 3107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-01-10 00:08:12,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [704 Valid, 708 Invalid, 3379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [272 Valid, 3107 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-01-10 00:08:12,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16526 states. [2022-01-10 00:08:12,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16526 to 15775. [2022-01-10 00:08:12,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15775 states, 15774 states have (on average 1.2119310257385572) internal successors, (19117), 15774 states have internal predecessors, (19117), 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 00:08:12,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15775 states to 15775 states and 19117 transitions. [2022-01-10 00:08:12,376 INFO L78 Accepts]: Start accepts. Automaton has 15775 states and 19117 transitions. Word has length 189 [2022-01-10 00:08:12,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:08:12,378 INFO L470 AbstractCegarLoop]: Abstraction has 15775 states and 19117 transitions. [2022-01-10 00:08:12,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.25) internal successors, (189), 3 states have internal predecessors, (189), 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 00:08:12,380 INFO L276 IsEmpty]: Start isEmpty. Operand 15775 states and 19117 transitions. [2022-01-10 00:08:12,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2022-01-10 00:08:12,382 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:08:12,383 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-10 00:08:12,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 00:08:12,383 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:08:12,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:08:12,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1915378566, now seen corresponding path program 1 times [2022-01-10 00:08:12,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:08:12,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687057791] [2022-01-10 00:08:12,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:08:12,384 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:08:12,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:08:12,517 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-01-10 00:08:12,517 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:08:12,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687057791] [2022-01-10 00:08:12,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687057791] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:08:12,517 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:08:12,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:08:12,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920663996] [2022-01-10 00:08:12,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:08:12,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 00:08:12,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:08:12,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 00:08:12,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:08:12,518 INFO L87 Difference]: Start difference. First operand 15775 states and 19117 transitions. Second operand has 4 states, 4 states have (on average 45.0) internal successors, (180), 3 states have internal predecessors, (180), 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 00:08:15,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:08:15,211 INFO L93 Difference]: Finished difference Result 42138 states and 51907 transitions. [2022-01-10 00:08:15,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 00:08:15,212 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.0) internal successors, (180), 3 states have internal predecessors, (180), 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 249 [2022-01-10 00:08:15,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:08:15,295 INFO L225 Difference]: With dead ends: 42138 [2022-01-10 00:08:15,295 INFO L226 Difference]: Without dead ends: 27042 [2022-01-10 00:08:15,310 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:08:15,314 INFO L933 BasicCegarLoop]: 309 mSDtfsCounter, 776 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 3717 mSolverCounterSat, 542 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 776 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 4259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 542 IncrementalHoareTripleChecker+Valid, 3717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-01-10 00:08:15,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [776 Valid, 324 Invalid, 4259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [542 Valid, 3717 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-01-10 00:08:15,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27042 states. [2022-01-10 00:08:15,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27042 to 25538. [2022-01-10 00:08:15,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25538 states, 25537 states have (on average 1.1716333163644908) internal successors, (29920), 25537 states have internal predecessors, (29920), 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 00:08:15,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25538 states to 25538 states and 29920 transitions. [2022-01-10 00:08:15,593 INFO L78 Accepts]: Start accepts. Automaton has 25538 states and 29920 transitions. Word has length 249 [2022-01-10 00:08:15,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:08:15,593 INFO L470 AbstractCegarLoop]: Abstraction has 25538 states and 29920 transitions. [2022-01-10 00:08:15,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.0) internal successors, (180), 3 states have internal predecessors, (180), 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 00:08:15,593 INFO L276 IsEmpty]: Start isEmpty. Operand 25538 states and 29920 transitions. [2022-01-10 00:08:15,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2022-01-10 00:08:15,595 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:08:15,596 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:08:15,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 00:08:15,596 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:08:15,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:08:15,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1830829875, now seen corresponding path program 1 times [2022-01-10 00:08:15,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:08:15,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103395384] [2022-01-10 00:08:15,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:08:15,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:08:15,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:08:15,703 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-01-10 00:08:15,703 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:08:15,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103395384] [2022-01-10 00:08:15,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103395384] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:08:15,704 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:08:15,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:08:15,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757703302] [2022-01-10 00:08:15,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:08:15,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:08:15,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:08:15,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:08:15,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:08:15,706 INFO L87 Difference]: Start difference. First operand 25538 states and 29920 transitions. Second operand has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 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 00:08:17,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:08:17,953 INFO L93 Difference]: Finished difference Result 62339 states and 74258 transitions. [2022-01-10 00:08:17,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:08:17,953 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 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 267 [2022-01-10 00:08:17,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:08:18,001 INFO L225 Difference]: With dead ends: 62339 [2022-01-10 00:08:18,002 INFO L226 Difference]: Without dead ends: 37554 [2022-01-10 00:08:18,026 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 00:08:18,027 INFO L933 BasicCegarLoop]: 453 mSDtfsCounter, 745 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2241 mSolverCounterSat, 659 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 745 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 2900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 659 IncrementalHoareTripleChecker+Valid, 2241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-01-10 00:08:18,027 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [745 Valid, 460 Invalid, 2900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [659 Valid, 2241 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-01-10 00:08:18,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37554 states. [2022-01-10 00:08:18,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37554 to 36052. [2022-01-10 00:08:18,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36052 states, 36051 states have (on average 1.171590247149871) internal successors, (42237), 36051 states have internal predecessors, (42237), 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 00:08:18,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36052 states to 36052 states and 42237 transitions. [2022-01-10 00:08:18,479 INFO L78 Accepts]: Start accepts. Automaton has 36052 states and 42237 transitions. Word has length 267 [2022-01-10 00:08:18,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:08:18,479 INFO L470 AbstractCegarLoop]: Abstraction has 36052 states and 42237 transitions. [2022-01-10 00:08:18,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 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 00:08:18,479 INFO L276 IsEmpty]: Start isEmpty. Operand 36052 states and 42237 transitions. [2022-01-10 00:08:18,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2022-01-10 00:08:18,482 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:08:18,482 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:08:18,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 00:08:18,482 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:08:18,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:08:18,483 INFO L85 PathProgramCache]: Analyzing trace with hash 2003053955, now seen corresponding path program 1 times [2022-01-10 00:08:18,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:08:18,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427415517] [2022-01-10 00:08:18,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:08:18,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:08:18,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:08:18,576 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-01-10 00:08:18,576 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:08:18,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427415517] [2022-01-10 00:08:18,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427415517] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:08:18,576 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:08:18,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:08:18,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634896461] [2022-01-10 00:08:18,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:08:18,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:08:18,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:08:18,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:08:18,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:08:18,577 INFO L87 Difference]: Start difference. First operand 36052 states and 42237 transitions. Second operand has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 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 00:08:20,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:08:20,896 INFO L93 Difference]: Finished difference Result 90877 states and 107574 transitions. [2022-01-10 00:08:20,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:08:20,897 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 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 299 [2022-01-10 00:08:20,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:08:20,969 INFO L225 Difference]: With dead ends: 90877 [2022-01-10 00:08:20,969 INFO L226 Difference]: Without dead ends: 55578 [2022-01-10 00:08:20,998 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 00:08:20,999 INFO L933 BasicCegarLoop]: 1313 mSDtfsCounter, 745 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2155 mSolverCounterSat, 685 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 745 SdHoareTripleChecker+Valid, 1321 SdHoareTripleChecker+Invalid, 2840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 685 IncrementalHoareTripleChecker+Valid, 2155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-01-10 00:08:20,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [745 Valid, 1321 Invalid, 2840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [685 Valid, 2155 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-01-10 00:08:21,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55578 states. [2022-01-10 00:08:21,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55578 to 53325. [2022-01-10 00:08:21,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53325 states, 53324 states have (on average 1.1462005851023929) internal successors, (61120), 53324 states have internal predecessors, (61120), 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 00:08:21,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53325 states to 53325 states and 61120 transitions. [2022-01-10 00:08:21,988 INFO L78 Accepts]: Start accepts. Automaton has 53325 states and 61120 transitions. Word has length 299 [2022-01-10 00:08:21,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:08:21,988 INFO L470 AbstractCegarLoop]: Abstraction has 53325 states and 61120 transitions. [2022-01-10 00:08:21,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 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 00:08:21,989 INFO L276 IsEmpty]: Start isEmpty. Operand 53325 states and 61120 transitions. [2022-01-10 00:08:21,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2022-01-10 00:08:21,994 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:08:21,994 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:08:21,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 00:08:21,995 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:08:21,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:08:21,995 INFO L85 PathProgramCache]: Analyzing trace with hash 122765980, now seen corresponding path program 1 times [2022-01-10 00:08:21,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:08:21,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761214369] [2022-01-10 00:08:21,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:08:21,995 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:08:22,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:08:22,273 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2022-01-10 00:08:22,274 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:08:22,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761214369] [2022-01-10 00:08:22,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761214369] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:08:22,274 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:08:22,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:08:22,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098874214] [2022-01-10 00:08:22,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:08:22,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:08:22,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:08:22,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:08:22,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:08:22,275 INFO L87 Difference]: Start difference. First operand 53325 states and 61120 transitions. Second operand has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 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 00:08:24,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:08:24,749 INFO L93 Difference]: Finished difference Result 123170 states and 140289 transitions. [2022-01-10 00:08:24,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:08:24,749 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 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 368 [2022-01-10 00:08:24,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:08:24,845 INFO L225 Difference]: With dead ends: 123170 [2022-01-10 00:08:24,845 INFO L226 Difference]: Without dead ends: 70598 [2022-01-10 00:08:24,874 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 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 00:08:24,876 INFO L933 BasicCegarLoop]: 892 mSDtfsCounter, 831 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2129 mSolverCounterSat, 584 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 831 SdHoareTripleChecker+Valid, 900 SdHoareTripleChecker+Invalid, 2713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 584 IncrementalHoareTripleChecker+Valid, 2129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-01-10 00:08:24,876 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [831 Valid, 900 Invalid, 2713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [584 Valid, 2129 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-01-10 00:08:24,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70598 states. [2022-01-10 00:08:25,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70598 to 63088. [2022-01-10 00:08:25,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63088 states, 63087 states have (on average 1.1197235563586794) internal successors, (70640), 63087 states have internal predecessors, (70640), 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 00:08:25,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63088 states to 63088 states and 70640 transitions. [2022-01-10 00:08:25,920 INFO L78 Accepts]: Start accepts. Automaton has 63088 states and 70640 transitions. Word has length 368 [2022-01-10 00:08:25,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:08:25,920 INFO L470 AbstractCegarLoop]: Abstraction has 63088 states and 70640 transitions. [2022-01-10 00:08:25,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 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 00:08:25,921 INFO L276 IsEmpty]: Start isEmpty. Operand 63088 states and 70640 transitions. [2022-01-10 00:08:25,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2022-01-10 00:08:25,927 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:08:25,928 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-10 00:08:25,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 00:08:25,928 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:08:25,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:08:25,928 INFO L85 PathProgramCache]: Analyzing trace with hash -489232330, now seen corresponding path program 1 times [2022-01-10 00:08:25,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:08:25,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317518401] [2022-01-10 00:08:25,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:08:25,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:08:25,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:08:26,036 INFO L134 CoverageAnalysis]: Checked inductivity of 623 backedges. 437 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2022-01-10 00:08:26,036 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:08:26,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317518401] [2022-01-10 00:08:26,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317518401] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:08:26,036 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:08:26,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:08:26,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853727937] [2022-01-10 00:08:26,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:08:26,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:08:26,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:08:26,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:08:26,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:08:26,037 INFO L87 Difference]: Start difference. First operand 63088 states and 70640 transitions. Second operand has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 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 00:08:28,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:08:28,878 INFO L93 Difference]: Finished difference Result 150957 states and 170801 transitions. [2022-01-10 00:08:28,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:08:28,879 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 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 445 [2022-01-10 00:08:28,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:08:28,973 INFO L225 Difference]: With dead ends: 150957 [2022-01-10 00:08:28,973 INFO L226 Difference]: Without dead ends: 88622 [2022-01-10 00:08:28,984 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 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 00:08:28,985 INFO L933 BasicCegarLoop]: 158 mSDtfsCounter, 815 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2029 mSolverCounterSat, 927 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 815 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 2956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 927 IncrementalHoareTripleChecker+Valid, 2029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-01-10 00:08:28,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [815 Valid, 164 Invalid, 2956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [927 Valid, 2029 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-01-10 00:08:29,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88622 states. [2022-01-10 00:08:29,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88622 to 81112. [2022-01-10 00:08:29,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81112 states, 81111 states have (on average 1.1291070261740084) internal successors, (91583), 81111 states have internal predecessors, (91583), 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 00:08:29,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81112 states to 81112 states and 91583 transitions. [2022-01-10 00:08:29,857 INFO L78 Accepts]: Start accepts. Automaton has 81112 states and 91583 transitions. Word has length 445 [2022-01-10 00:08:29,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:08:29,859 INFO L470 AbstractCegarLoop]: Abstraction has 81112 states and 91583 transitions. [2022-01-10 00:08:29,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 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 00:08:29,859 INFO L276 IsEmpty]: Start isEmpty. Operand 81112 states and 91583 transitions. [2022-01-10 00:08:29,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2022-01-10 00:08:29,871 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:08:29,871 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:08:29,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 00:08:29,872 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:08:29,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:08:29,872 INFO L85 PathProgramCache]: Analyzing trace with hash -788999778, now seen corresponding path program 1 times [2022-01-10 00:08:29,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:08:29,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788213837] [2022-01-10 00:08:29,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:08:29,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:08:30,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:08:30,168 INFO L134 CoverageAnalysis]: Checked inductivity of 743 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 604 trivial. 0 not checked. [2022-01-10 00:08:30,168 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:08:30,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788213837] [2022-01-10 00:08:30,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788213837] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:08:30,168 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:08:30,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:08:30,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171154604] [2022-01-10 00:08:30,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:08:30,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:08:30,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:08:30,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:08:30,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:08:30,170 INFO L87 Difference]: Start difference. First operand 81112 states and 91583 transitions. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 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 00:08:33,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:08:33,012 INFO L93 Difference]: Finished difference Result 199772 states and 225111 transitions. [2022-01-10 00:08:33,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:08:33,012 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 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 534 [2022-01-10 00:08:33,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:08:33,147 INFO L225 Difference]: With dead ends: 199772 [2022-01-10 00:08:33,148 INFO L226 Difference]: Without dead ends: 119413 [2022-01-10 00:08:33,188 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 00:08:33,188 INFO L933 BasicCegarLoop]: 1250 mSDtfsCounter, 723 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2628 mSolverCounterSat, 331 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 723 SdHoareTripleChecker+Valid, 1258 SdHoareTripleChecker+Invalid, 2959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 331 IncrementalHoareTripleChecker+Valid, 2628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-01-10 00:08:33,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [723 Valid, 1258 Invalid, 2959 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [331 Valid, 2628 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-01-10 00:08:33,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119413 states. [2022-01-10 00:08:34,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119413 to 111152. [2022-01-10 00:08:34,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111152 states, 111151 states have (on average 1.1231207996329318) internal successors, (124836), 111151 states have internal predecessors, (124836), 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 00:08:34,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111152 states to 111152 states and 124836 transitions. [2022-01-10 00:08:34,846 INFO L78 Accepts]: Start accepts. Automaton has 111152 states and 124836 transitions. Word has length 534 [2022-01-10 00:08:34,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:08:34,846 INFO L470 AbstractCegarLoop]: Abstraction has 111152 states and 124836 transitions. [2022-01-10 00:08:34,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 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 00:08:34,847 INFO L276 IsEmpty]: Start isEmpty. Operand 111152 states and 124836 transitions. [2022-01-10 00:08:34,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 554 [2022-01-10 00:08:34,860 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:08:34,868 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:08:34,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 00:08:34,868 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:08:34,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:08:34,869 INFO L85 PathProgramCache]: Analyzing trace with hash 39410756, now seen corresponding path program 1 times [2022-01-10 00:08:34,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:08:34,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068943139] [2022-01-10 00:08:34,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:08:34,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:08:35,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:08:35,160 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 543 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2022-01-10 00:08:35,161 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:08:35,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068943139] [2022-01-10 00:08:35,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068943139] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:08:35,161 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:08:35,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:08:35,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360096481] [2022-01-10 00:08:35,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:08:35,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:08:35,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:08:35,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:08:35,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:08:35,162 INFO L87 Difference]: Start difference. First operand 111152 states and 124836 transitions. Second operand has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 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 00:08:37,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:08:37,795 INFO L93 Difference]: Finished difference Result 252342 states and 284374 transitions. [2022-01-10 00:08:37,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:08:37,796 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 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 553 [2022-01-10 00:08:37,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:08:37,960 INFO L225 Difference]: With dead ends: 252342 [2022-01-10 00:08:37,960 INFO L226 Difference]: Without dead ends: 141943 [2022-01-10 00:08:38,196 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 00:08:38,196 INFO L933 BasicCegarLoop]: 1257 mSDtfsCounter, 584 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2309 mSolverCounterSat, 524 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 584 SdHoareTripleChecker+Valid, 1264 SdHoareTripleChecker+Invalid, 2833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 524 IncrementalHoareTripleChecker+Valid, 2309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-10 00:08:38,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [584 Valid, 1264 Invalid, 2833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [524 Valid, 2309 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-01-10 00:08:38,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141943 states. [2022-01-10 00:08:39,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141943 to 132931. [2022-01-10 00:08:39,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132931 states, 132930 states have (on average 1.1096366508688784) internal successors, (147504), 132930 states have internal predecessors, (147504), 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 00:08:40,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132931 states to 132931 states and 147504 transitions. [2022-01-10 00:08:40,029 INFO L78 Accepts]: Start accepts. Automaton has 132931 states and 147504 transitions. Word has length 553 [2022-01-10 00:08:40,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:08:40,030 INFO L470 AbstractCegarLoop]: Abstraction has 132931 states and 147504 transitions. [2022-01-10 00:08:40,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 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 00:08:40,030 INFO L276 IsEmpty]: Start isEmpty. Operand 132931 states and 147504 transitions. [2022-01-10 00:08:40,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 763 [2022-01-10 00:08:40,076 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:08:40,076 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:08:40,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 00:08:40,076 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:08:40,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:08:40,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1130505755, now seen corresponding path program 1 times [2022-01-10 00:08:40,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:08:40,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090540025] [2022-01-10 00:08:40,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:08:40,077 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:08:40,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:08:40,419 INFO L134 CoverageAnalysis]: Checked inductivity of 1447 backedges. 1176 proven. 120 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-01-10 00:08:40,419 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:08:40,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090540025] [2022-01-10 00:08:40,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090540025] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 00:08:40,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2025022635] [2022-01-10 00:08:40,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:08:40,420 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:08:40,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:08:40,421 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 00:08:40,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-10 00:08:40,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:08:40,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 953 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 00:08:40,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 00:08:41,531 INFO L134 CoverageAnalysis]: Checked inductivity of 1447 backedges. 714 proven. 0 refuted. 0 times theorem prover too weak. 733 trivial. 0 not checked. [2022-01-10 00:08:41,532 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 00:08:41,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2025022635] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:08:41,532 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 00:08:41,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-01-10 00:08:41,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558026215] [2022-01-10 00:08:41,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:08:41,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:08:41,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:08:41,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:08:41,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-01-10 00:08:41,534 INFO L87 Difference]: Start difference. First operand 132931 states and 147504 transitions. Second operand has 3 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 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 00:08:44,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:08:44,464 INFO L93 Difference]: Finished difference Result 293647 states and 326783 transitions. [2022-01-10 00:08:44,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:08:44,464 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 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 762 [2022-01-10 00:08:44,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:08:44,706 INFO L225 Difference]: With dead ends: 293647 [2022-01-10 00:08:44,706 INFO L226 Difference]: Without dead ends: 161469 [2022-01-10 00:08:44,777 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 767 GetRequests, 762 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-01-10 00:08:44,777 INFO L933 BasicCegarLoop]: 354 mSDtfsCounter, 753 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2080 mSolverCounterSat, 619 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 753 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 2699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 619 IncrementalHoareTripleChecker+Valid, 2080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-10 00:08:44,777 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [753 Valid, 360 Invalid, 2699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [619 Valid, 2080 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-01-10 00:08:44,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161469 states. [2022-01-10 00:08:46,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161469 to 150955. [2022-01-10 00:08:46,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150955 states, 150954 states have (on average 1.0961484955681864) internal successors, (165468), 150954 states have internal predecessors, (165468), 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 00:08:46,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150955 states to 150955 states and 165468 transitions. [2022-01-10 00:08:46,982 INFO L78 Accepts]: Start accepts. Automaton has 150955 states and 165468 transitions. Word has length 762 [2022-01-10 00:08:47,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:08:47,002 INFO L470 AbstractCegarLoop]: Abstraction has 150955 states and 165468 transitions. [2022-01-10 00:08:47,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 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 00:08:47,003 INFO L276 IsEmpty]: Start isEmpty. Operand 150955 states and 165468 transitions. [2022-01-10 00:08:47,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 797 [2022-01-10 00:08:47,037 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:08:47,037 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:08:47,054 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-01-10 00:08:47,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-01-10 00:08:47,252 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:08:47,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:08:47,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1985429424, now seen corresponding path program 1 times [2022-01-10 00:08:47,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:08:47,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146948950] [2022-01-10 00:08:47,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:08:47,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:08:47,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:08:47,425 INFO L134 CoverageAnalysis]: Checked inductivity of 1509 backedges. 174 proven. 0 refuted. 0 times theorem prover too weak. 1335 trivial. 0 not checked. [2022-01-10 00:08:47,425 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:08:47,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146948950] [2022-01-10 00:08:47,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146948950] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:08:47,425 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:08:47,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:08:47,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423248223] [2022-01-10 00:08:47,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:08:47,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:08:47,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:08:47,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:08:47,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:08:47,428 INFO L87 Difference]: Start difference. First operand 150955 states and 165468 transitions. Second operand has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 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 00:08:50,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:08:50,920 INFO L93 Difference]: Finished difference Result 323687 states and 353803 transitions. [2022-01-10 00:08:50,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:08:50,921 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 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 796 [2022-01-10 00:08:50,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:08:51,145 INFO L225 Difference]: With dead ends: 323687 [2022-01-10 00:08:51,145 INFO L226 Difference]: Without dead ends: 173485 [2022-01-10 00:08:51,216 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 00:08:51,216 INFO L933 BasicCegarLoop]: 1247 mSDtfsCounter, 747 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2423 mSolverCounterSat, 476 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 747 SdHoareTripleChecker+Valid, 1255 SdHoareTripleChecker+Invalid, 2899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 476 IncrementalHoareTripleChecker+Valid, 2423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-01-10 00:08:51,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [747 Valid, 1255 Invalid, 2899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [476 Valid, 2423 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-01-10 00:08:51,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173485 states. [2022-01-10 00:08:53,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173485 to 162971. [2022-01-10 00:08:53,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162971 states, 162970 states have (on average 1.0863778609560042) internal successors, (177047), 162970 states have internal predecessors, (177047), 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 00:08:53,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162971 states to 162971 states and 177047 transitions. [2022-01-10 00:08:53,453 INFO L78 Accepts]: Start accepts. Automaton has 162971 states and 177047 transitions. Word has length 796 [2022-01-10 00:08:53,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:08:53,453 INFO L470 AbstractCegarLoop]: Abstraction has 162971 states and 177047 transitions. [2022-01-10 00:08:53,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 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 00:08:53,453 INFO L276 IsEmpty]: Start isEmpty. Operand 162971 states and 177047 transitions.