./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem17_label06.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem17_label06.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e9764aa77a297d88a5c4424b1d4363c7dc0ea34b016b7ff505243e4a2273d457 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 04:59:56,773 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 04:59:56,775 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 04:59:56,821 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 04:59:56,825 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 04:59:56,826 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 04:59:56,828 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 04:59:56,831 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 04:59:56,833 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 04:59:56,833 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 04:59:56,834 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 04:59:56,835 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 04:59:56,836 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 04:59:56,838 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 04:59:56,839 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 04:59:56,840 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 04:59:56,842 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 04:59:56,845 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 04:59:56,846 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 04:59:56,850 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 04:59:56,851 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 04:59:56,853 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 04:59:56,854 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 04:59:56,855 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 04:59:56,856 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 04:59:56,859 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 04:59:56,859 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 04:59:56,859 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 04:59:56,860 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 04:59:56,861 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 04:59:56,861 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 04:59:56,862 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 04:59:56,862 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 04:59:56,863 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 04:59:56,864 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 04:59:56,865 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 04:59:56,865 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 04:59:56,865 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 04:59:56,866 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 04:59:56,866 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 04:59:56,867 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 04:59:56,867 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 04:59:56,888 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 04:59:56,888 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 04:59:56,889 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 04:59:56,889 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 04:59:56,890 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 04:59:56,890 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 04:59:56,890 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 04:59:56,891 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 04:59:56,891 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 04:59:56,891 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 04:59:56,892 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 04:59:56,892 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 04:59:56,892 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 04:59:56,892 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 04:59:56,892 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 04:59:56,892 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 04:59:56,893 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 04:59:56,893 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 04:59:56,893 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 04:59:56,893 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 04:59:56,893 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 04:59:56,893 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 04:59:56,893 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 04:59:56,894 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 04:59:56,894 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 04:59:56,894 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 04:59:56,894 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 04:59:56,894 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 04:59:56,894 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 04:59:56,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 04:59:56,895 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 04:59:56,895 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 04:59:56,895 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 04:59:56,895 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 04:59:56,896 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e9764aa77a297d88a5c4424b1d4363c7dc0ea34b016b7ff505243e4a2273d457 [2021-12-17 04:59:57,089 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 04:59:57,121 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 04:59:57,123 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 04:59:57,124 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 04:59:57,125 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 04:59:57,126 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem17_label06.c [2021-12-17 04:59:57,171 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/269e29a1b/41066dd722ac4cb68609bed921ad2ed0/FLAG6d087e05e [2021-12-17 04:59:57,590 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 04:59:57,590 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label06.c [2021-12-17 04:59:57,607 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/269e29a1b/41066dd722ac4cb68609bed921ad2ed0/FLAG6d087e05e [2021-12-17 04:59:57,905 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/269e29a1b/41066dd722ac4cb68609bed921ad2ed0 [2021-12-17 04:59:57,907 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 04:59:57,908 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 04:59:57,909 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 04:59:57,909 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 04:59:57,912 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 04:59:57,912 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 04:59:57" (1/1) ... [2021-12-17 04:59:57,914 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f5e6389 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:59:57, skipping insertion in model container [2021-12-17 04:59:57,914 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 04:59:57" (1/1) ... [2021-12-17 04:59:57,919 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 04:59:57,996 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 04:59:58,215 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label06.c[4782,4795] [2021-12-17 04:59:58,561 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 04:59:58,594 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 04:59:58,615 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label06.c[4782,4795] [2021-12-17 04:59:58,812 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 04:59:58,824 INFO L208 MainTranslator]: Completed translation [2021-12-17 04:59:58,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:59:58 WrapperNode [2021-12-17 04:59:58,825 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 04:59:58,826 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 04:59:58,826 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 04:59:58,826 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 04:59:58,831 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:59:58" (1/1) ... [2021-12-17 04:59:58,866 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:59:58" (1/1) ... [2021-12-17 04:59:59,083 INFO L137 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2611 [2021-12-17 04:59:59,083 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 04:59:59,084 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 04:59:59,084 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 04:59:59,084 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 04:59:59,090 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:59:58" (1/1) ... [2021-12-17 04:59:59,090 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:59:58" (1/1) ... [2021-12-17 04:59:59,124 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:59:58" (1/1) ... [2021-12-17 04:59:59,125 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:59:58" (1/1) ... [2021-12-17 04:59:59,271 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:59:58" (1/1) ... [2021-12-17 04:59:59,291 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:59:58" (1/1) ... [2021-12-17 04:59:59,304 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:59:58" (1/1) ... [2021-12-17 04:59:59,328 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 04:59:59,329 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 04:59:59,330 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 04:59:59,330 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 04:59:59,331 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:59:58" (1/1) ... [2021-12-17 04:59:59,336 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 04:59:59,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 04:59:59,355 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) [2021-12-17 04:59:59,413 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 [2021-12-17 04:59:59,457 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 04:59:59,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 04:59:59,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 04:59:59,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 04:59:59,517 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 04:59:59,518 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 05:00:01,896 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 05:00:01,910 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 05:00:01,910 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-17 05:00:01,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 05:00:01 BoogieIcfgContainer [2021-12-17 05:00:01,912 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 05:00:01,914 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 05:00:01,914 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 05:00:01,916 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 05:00:01,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 04:59:57" (1/3) ... [2021-12-17 05:00:01,917 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7723136b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 05:00:01, skipping insertion in model container [2021-12-17 05:00:01,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:59:58" (2/3) ... [2021-12-17 05:00:01,917 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7723136b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 05:00:01, skipping insertion in model container [2021-12-17 05:00:01,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 05:00:01" (3/3) ... [2021-12-17 05:00:01,919 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem17_label06.c [2021-12-17 05:00:01,923 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 05:00:01,923 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 05:00:01,966 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 05:00:01,972 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 [2021-12-17 05:00:01,973 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-17 05:00:01,997 INFO L276 IsEmpty]: Start isEmpty. Operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 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) [2021-12-17 05:00:02,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-17 05:00:02,002 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 05:00:02,003 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] [2021-12-17 05:00:02,003 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 05:00:02,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 05:00:02,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1843609039, now seen corresponding path program 1 times [2021-12-17 05:00:02,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 05:00:02,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652322847] [2021-12-17 05:00:02,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 05:00:02,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 05:00:02,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 05:00:02,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 05:00:02,272 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 05:00:02,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652322847] [2021-12-17 05:00:02,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652322847] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 05:00:02,273 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 05:00:02,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 05:00:02,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344058974] [2021-12-17 05:00:02,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 05:00:02,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 05:00:02,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 05:00:02,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 05:00:02,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 05:00:02,296 INFO L87 Difference]: Start difference. First operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 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 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 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) [2021-12-17 05:00:04,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 05:00:04,454 INFO L93 Difference]: Finished difference Result 1642 states and 3024 transitions. [2021-12-17 05:00:04,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 05:00:04,466 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 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 31 [2021-12-17 05:00:04,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 05:00:04,485 INFO L225 Difference]: With dead ends: 1642 [2021-12-17 05:00:04,485 INFO L226 Difference]: Without dead ends: 975 [2021-12-17 05:00:04,496 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 [2021-12-17 05:00:04,499 INFO L933 BasicCegarLoop]: 474 mSDtfsCounter, 459 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 1413 mSolverCounterSat, 372 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 1785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 372 IncrementalHoareTripleChecker+Valid, 1413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-17 05:00:04,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [459 Valid, 550 Invalid, 1785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [372 Valid, 1413 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-17 05:00:04,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2021-12-17 05:00:04,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 972. [2021-12-17 05:00:04,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 971 states have (on average 1.5077239958805355) internal successors, (1464), 971 states have internal predecessors, (1464), 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) [2021-12-17 05:00:04,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1464 transitions. [2021-12-17 05:00:04,556 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1464 transitions. Word has length 31 [2021-12-17 05:00:04,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 05:00:04,557 INFO L470 AbstractCegarLoop]: Abstraction has 972 states and 1464 transitions. [2021-12-17 05:00:04,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 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) [2021-12-17 05:00:04,557 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1464 transitions. [2021-12-17 05:00:04,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-17 05:00:04,559 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 05:00:04,559 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 05:00:04,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 05:00:04,560 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 05:00:04,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 05:00:04,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1041259748, now seen corresponding path program 1 times [2021-12-17 05:00:04,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 05:00:04,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171738203] [2021-12-17 05:00:04,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 05:00:04,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 05:00:04,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 05:00:04,743 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 05:00:04,744 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 05:00:04,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171738203] [2021-12-17 05:00:04,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171738203] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 05:00:04,744 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 05:00:04,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 05:00:04,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23305138] [2021-12-17 05:00:04,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 05:00:04,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 05:00:04,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 05:00:04,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 05:00:04,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 05:00:04,748 INFO L87 Difference]: Start difference. First operand 972 states and 1464 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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) [2021-12-17 05:00:06,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 05:00:06,984 INFO L93 Difference]: Finished difference Result 2814 states and 4242 transitions. [2021-12-17 05:00:06,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 05:00:06,984 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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 101 [2021-12-17 05:00:06,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 05:00:06,989 INFO L225 Difference]: With dead ends: 2814 [2021-12-17 05:00:06,989 INFO L226 Difference]: Without dead ends: 1844 [2021-12-17 05:00:06,990 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 [2021-12-17 05:00:06,991 INFO L933 BasicCegarLoop]: 853 mSDtfsCounter, 460 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 1283 mSolverCounterSat, 414 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 1697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 414 IncrementalHoareTripleChecker+Valid, 1283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-17 05:00:06,992 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [460 Valid, 921 Invalid, 1697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [414 Valid, 1283 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-17 05:00:06,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1844 states. [2021-12-17 05:00:07,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1844 to 1842. [2021-12-17 05:00:07,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1842 states, 1841 states have (on average 1.3601303639326452) internal successors, (2504), 1841 states have internal predecessors, (2504), 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) [2021-12-17 05:00:07,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1842 states to 1842 states and 2504 transitions. [2021-12-17 05:00:07,029 INFO L78 Accepts]: Start accepts. Automaton has 1842 states and 2504 transitions. Word has length 101 [2021-12-17 05:00:07,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 05:00:07,032 INFO L470 AbstractCegarLoop]: Abstraction has 1842 states and 2504 transitions. [2021-12-17 05:00:07,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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) [2021-12-17 05:00:07,032 INFO L276 IsEmpty]: Start isEmpty. Operand 1842 states and 2504 transitions. [2021-12-17 05:00:07,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-17 05:00:07,039 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 05:00:07,040 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 05:00:07,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 05:00:07,043 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 05:00:07,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 05:00:07,046 INFO L85 PathProgramCache]: Analyzing trace with hash 408306017, now seen corresponding path program 1 times [2021-12-17 05:00:07,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 05:00:07,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294591919] [2021-12-17 05:00:07,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 05:00:07,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 05:00:07,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 05:00:07,141 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 05:00:07,142 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 05:00:07,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294591919] [2021-12-17 05:00:07,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294591919] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 05:00:07,142 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 05:00:07,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 05:00:07,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224238693] [2021-12-17 05:00:07,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 05:00:07,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 05:00:07,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 05:00:07,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 05:00:07,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 05:00:07,145 INFO L87 Difference]: Start difference. First operand 1842 states and 2504 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:00:09,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 05:00:09,236 INFO L93 Difference]: Finished difference Result 5445 states and 7408 transitions. [2021-12-17 05:00:09,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 05:00:09,237 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2021-12-17 05:00:09,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 05:00:09,246 INFO L225 Difference]: With dead ends: 5445 [2021-12-17 05:00:09,246 INFO L226 Difference]: Without dead ends: 3605 [2021-12-17 05:00:09,248 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 [2021-12-17 05:00:09,254 INFO L933 BasicCegarLoop]: 224 mSDtfsCounter, 440 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 1566 mSolverCounterSat, 291 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 1857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 291 IncrementalHoareTripleChecker+Valid, 1566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-17 05:00:09,256 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [440 Valid, 273 Invalid, 1857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [291 Valid, 1566 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-17 05:00:09,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3605 states. [2021-12-17 05:00:09,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3605 to 3583. [2021-12-17 05:00:09,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3583 states, 3582 states have (on average 1.3358458961474038) internal successors, (4785), 3582 states have internal predecessors, (4785), 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) [2021-12-17 05:00:09,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3583 states to 3583 states and 4785 transitions. [2021-12-17 05:00:09,304 INFO L78 Accepts]: Start accepts. Automaton has 3583 states and 4785 transitions. Word has length 123 [2021-12-17 05:00:09,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 05:00:09,305 INFO L470 AbstractCegarLoop]: Abstraction has 3583 states and 4785 transitions. [2021-12-17 05:00:09,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:00:09,306 INFO L276 IsEmpty]: Start isEmpty. Operand 3583 states and 4785 transitions. [2021-12-17 05:00:09,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-12-17 05:00:09,310 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 05:00:09,311 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 05:00:09,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-17 05:00:09,311 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 05:00:09,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 05:00:09,312 INFO L85 PathProgramCache]: Analyzing trace with hash 446171936, now seen corresponding path program 1 times [2021-12-17 05:00:09,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 05:00:09,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917920585] [2021-12-17 05:00:09,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 05:00:09,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 05:00:09,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 05:00:09,484 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 05:00:09,484 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 05:00:09,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917920585] [2021-12-17 05:00:09,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917920585] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 05:00:09,485 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 05:00:09,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 05:00:09,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988542686] [2021-12-17 05:00:09,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 05:00:09,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 05:00:09,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 05:00:09,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 05:00:09,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 05:00:09,488 INFO L87 Difference]: Start difference. First operand 3583 states and 4785 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 2 states have internal predecessors, (136), 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) [2021-12-17 05:00:11,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 05:00:11,837 INFO L93 Difference]: Finished difference Result 8893 states and 11846 transitions. [2021-12-17 05:00:11,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 05:00:11,838 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 2 states have internal predecessors, (136), 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 136 [2021-12-17 05:00:11,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 05:00:11,852 INFO L225 Difference]: With dead ends: 8893 [2021-12-17 05:00:11,852 INFO L226 Difference]: Without dead ends: 5312 [2021-12-17 05:00:11,856 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 [2021-12-17 05:00:11,866 INFO L933 BasicCegarLoop]: 475 mSDtfsCounter, 352 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1665 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 1800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 1665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-17 05:00:11,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [352 Valid, 537 Invalid, 1800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 1665 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-17 05:00:11,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5312 states. [2021-12-17 05:00:11,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5312 to 5292. [2021-12-17 05:00:11,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5292 states, 5291 states have (on average 1.2797202797202798) internal successors, (6771), 5291 states have internal predecessors, (6771), 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) [2021-12-17 05:00:11,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5292 states to 5292 states and 6771 transitions. [2021-12-17 05:00:11,944 INFO L78 Accepts]: Start accepts. Automaton has 5292 states and 6771 transitions. Word has length 136 [2021-12-17 05:00:11,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 05:00:11,945 INFO L470 AbstractCegarLoop]: Abstraction has 5292 states and 6771 transitions. [2021-12-17 05:00:11,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 2 states have internal predecessors, (136), 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) [2021-12-17 05:00:11,945 INFO L276 IsEmpty]: Start isEmpty. Operand 5292 states and 6771 transitions. [2021-12-17 05:00:11,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-12-17 05:00:11,947 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 05:00:11,947 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 05:00:11,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-17 05:00:11,947 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 05:00:11,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 05:00:11,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1180835985, now seen corresponding path program 1 times [2021-12-17 05:00:11,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 05:00:11,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365383045] [2021-12-17 05:00:11,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 05:00:11,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 05:00:11,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 05:00:12,051 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 05:00:12,052 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 05:00:12,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365383045] [2021-12-17 05:00:12,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365383045] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 05:00:12,052 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 05:00:12,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 05:00:12,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135808549] [2021-12-17 05:00:12,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 05:00:12,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-17 05:00:12,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 05:00:12,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-17 05:00:12,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-17 05:00:12,054 INFO L87 Difference]: Start difference. First operand 5292 states and 6771 transitions. Second operand has 4 states, 4 states have (on average 35.5) internal successors, (142), 3 states have internal predecessors, (142), 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) [2021-12-17 05:00:14,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 05:00:14,350 INFO L93 Difference]: Finished difference Result 9327 states and 12044 transitions. [2021-12-17 05:00:14,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 05:00:14,351 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 3 states have internal predecessors, (142), 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 142 [2021-12-17 05:00:14,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 05:00:14,365 INFO L225 Difference]: With dead ends: 9327 [2021-12-17 05:00:14,366 INFO L226 Difference]: Without dead ends: 4037 [2021-12-17 05:00:14,371 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 [2021-12-17 05:00:14,373 INFO L933 BasicCegarLoop]: 516 mSDtfsCounter, 746 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 1623 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 746 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 1845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 1623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-17 05:00:14,374 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [746 Valid, 935 Invalid, 1845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 1623 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-17 05:00:14,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4037 states. [2021-12-17 05:00:14,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4037 to 4008. [2021-12-17 05:00:14,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4008 states, 4007 states have (on average 1.3017219865235836) internal successors, (5216), 4007 states have internal predecessors, (5216), 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) [2021-12-17 05:00:14,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4008 states to 4008 states and 5216 transitions. [2021-12-17 05:00:14,444 INFO L78 Accepts]: Start accepts. Automaton has 4008 states and 5216 transitions. Word has length 142 [2021-12-17 05:00:14,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 05:00:14,445 INFO L470 AbstractCegarLoop]: Abstraction has 4008 states and 5216 transitions. [2021-12-17 05:00:14,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 3 states have internal predecessors, (142), 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) [2021-12-17 05:00:14,448 INFO L276 IsEmpty]: Start isEmpty. Operand 4008 states and 5216 transitions. [2021-12-17 05:00:14,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-12-17 05:00:14,450 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 05:00:14,450 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, 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] [2021-12-17 05:00:14,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-17 05:00:14,450 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 05:00:14,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 05:00:14,451 INFO L85 PathProgramCache]: Analyzing trace with hash -142832468, now seen corresponding path program 1 times [2021-12-17 05:00:14,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 05:00:14,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403536495] [2021-12-17 05:00:14,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 05:00:14,457 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 05:00:14,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 05:00:14,559 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-12-17 05:00:14,560 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 05:00:14,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403536495] [2021-12-17 05:00:14,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403536495] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 05:00:14,560 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 05:00:14,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 05:00:14,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38218642] [2021-12-17 05:00:14,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 05:00:14,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 05:00:14,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 05:00:14,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 05:00:14,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 05:00:14,562 INFO L87 Difference]: Start difference. First operand 4008 states and 5216 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 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) [2021-12-17 05:00:16,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 05:00:16,422 INFO L93 Difference]: Finished difference Result 10996 states and 14542 transitions. [2021-12-17 05:00:16,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 05:00:16,423 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 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 170 [2021-12-17 05:00:16,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 05:00:16,451 INFO L225 Difference]: With dead ends: 10996 [2021-12-17 05:00:16,452 INFO L226 Difference]: Without dead ends: 5711 [2021-12-17 05:00:16,473 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 [2021-12-17 05:00:16,474 INFO L933 BasicCegarLoop]: 516 mSDtfsCounter, 386 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-17 05:00:16,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [386 Valid, 591 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-17 05:00:16,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5711 states. [2021-12-17 05:00:16,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5711 to 4427. [2021-12-17 05:00:16,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4427 states, 4426 states have (on average 1.208992318120199) internal successors, (5351), 4426 states have internal predecessors, (5351), 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) [2021-12-17 05:00:16,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4427 states to 4427 states and 5351 transitions. [2021-12-17 05:00:16,592 INFO L78 Accepts]: Start accepts. Automaton has 4427 states and 5351 transitions. Word has length 170 [2021-12-17 05:00:16,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 05:00:16,592 INFO L470 AbstractCegarLoop]: Abstraction has 4427 states and 5351 transitions. [2021-12-17 05:00:16,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 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) [2021-12-17 05:00:16,592 INFO L276 IsEmpty]: Start isEmpty. Operand 4427 states and 5351 transitions. [2021-12-17 05:00:16,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-12-17 05:00:16,594 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 05:00:16,594 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, 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] [2021-12-17 05:00:16,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-17 05:00:16,594 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 05:00:16,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 05:00:16,595 INFO L85 PathProgramCache]: Analyzing trace with hash -2084215794, now seen corresponding path program 1 times [2021-12-17 05:00:16,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 05:00:16,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532857918] [2021-12-17 05:00:16,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 05:00:16,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 05:00:16,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 05:00:16,657 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 05:00:16,657 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 05:00:16,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532857918] [2021-12-17 05:00:16,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532857918] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 05:00:16,657 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 05:00:16,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 05:00:16,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859646711] [2021-12-17 05:00:16,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 05:00:16,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 05:00:16,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 05:00:16,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 05:00:16,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 05:00:16,659 INFO L87 Difference]: Start difference. First operand 4427 states and 5351 transitions. Second operand has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 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) [2021-12-17 05:00:18,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 05:00:18,040 INFO L93 Difference]: Finished difference Result 11399 states and 13997 transitions. [2021-12-17 05:00:18,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 05:00:18,041 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 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 183 [2021-12-17 05:00:18,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 05:00:18,065 INFO L225 Difference]: With dead ends: 11399 [2021-12-17 05:00:18,065 INFO L226 Difference]: Without dead ends: 6974 [2021-12-17 05:00:18,071 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 [2021-12-17 05:00:18,072 INFO L933 BasicCegarLoop]: 727 mSDtfsCounter, 496 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 785 SdHoareTripleChecker+Invalid, 1442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-17 05:00:18,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [496 Valid, 785 Invalid, 1442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 1136 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-17 05:00:18,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6974 states. [2021-12-17 05:00:18,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6974 to 6974. [2021-12-17 05:00:18,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6974 states, 6973 states have (on average 1.1834217696830633) internal successors, (8252), 6973 states have internal predecessors, (8252), 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) [2021-12-17 05:00:18,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6974 states to 6974 states and 8252 transitions. [2021-12-17 05:00:18,171 INFO L78 Accepts]: Start accepts. Automaton has 6974 states and 8252 transitions. Word has length 183 [2021-12-17 05:00:18,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 05:00:18,171 INFO L470 AbstractCegarLoop]: Abstraction has 6974 states and 8252 transitions. [2021-12-17 05:00:18,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 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) [2021-12-17 05:00:18,172 INFO L276 IsEmpty]: Start isEmpty. Operand 6974 states and 8252 transitions. [2021-12-17 05:00:18,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-12-17 05:00:18,173 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 05:00:18,174 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, 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] [2021-12-17 05:00:18,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-17 05:00:18,174 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 05:00:18,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 05:00:18,175 INFO L85 PathProgramCache]: Analyzing trace with hash 851513907, now seen corresponding path program 1 times [2021-12-17 05:00:18,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 05:00:18,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904638793] [2021-12-17 05:00:18,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 05:00:18,175 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 05:00:18,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 05:00:18,223 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-12-17 05:00:18,224 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 05:00:18,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904638793] [2021-12-17 05:00:18,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904638793] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 05:00:18,224 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 05:00:18,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 05:00:18,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22196880] [2021-12-17 05:00:18,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 05:00:18,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 05:00:18,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 05:00:18,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 05:00:18,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 05:00:18,226 INFO L87 Difference]: Start difference. First operand 6974 states and 8252 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 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) [2021-12-17 05:00:19,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 05:00:19,808 INFO L93 Difference]: Finished difference Result 16914 states and 20159 transitions. [2021-12-17 05:00:19,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 05:00:19,808 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 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 185 [2021-12-17 05:00:19,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 05:00:19,826 INFO L225 Difference]: With dead ends: 16914 [2021-12-17 05:00:19,826 INFO L226 Difference]: Without dead ends: 9941 [2021-12-17 05:00:19,833 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 [2021-12-17 05:00:19,834 INFO L933 BasicCegarLoop]: 382 mSDtfsCounter, 420 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1215 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 1489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 1215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-17 05:00:19,834 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [420 Valid, 444 Invalid, 1489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 1215 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-17 05:00:19,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9941 states. [2021-12-17 05:00:19,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9941 to 7373. [2021-12-17 05:00:19,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7373 states, 7372 states have (on average 1.1795984807379274) internal successors, (8696), 7372 states have internal predecessors, (8696), 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) [2021-12-17 05:00:19,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7373 states to 7373 states and 8696 transitions. [2021-12-17 05:00:19,925 INFO L78 Accepts]: Start accepts. Automaton has 7373 states and 8696 transitions. Word has length 185 [2021-12-17 05:00:19,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 05:00:19,926 INFO L470 AbstractCegarLoop]: Abstraction has 7373 states and 8696 transitions. [2021-12-17 05:00:19,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 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) [2021-12-17 05:00:19,926 INFO L276 IsEmpty]: Start isEmpty. Operand 7373 states and 8696 transitions. [2021-12-17 05:00:19,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2021-12-17 05:00:19,929 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 05:00:19,929 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 05:00:19,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-17 05:00:19,930 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 05:00:19,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 05:00:19,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1437277011, now seen corresponding path program 1 times [2021-12-17 05:00:19,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 05:00:19,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543828189] [2021-12-17 05:00:19,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 05:00:19,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 05:00:19,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 05:00:20,019 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-12-17 05:00:20,020 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 05:00:20,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543828189] [2021-12-17 05:00:20,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543828189] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 05:00:20,020 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 05:00:20,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 05:00:20,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075230833] [2021-12-17 05:00:20,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 05:00:20,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 05:00:20,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 05:00:20,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 05:00:20,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 05:00:20,022 INFO L87 Difference]: Start difference. First operand 7373 states and 8696 transitions. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 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) [2021-12-17 05:00:21,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 05:00:21,595 INFO L93 Difference]: Finished difference Result 18168 states and 21744 transitions. [2021-12-17 05:00:21,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 05:00:21,596 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 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 251 [2021-12-17 05:00:21,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 05:00:21,611 INFO L225 Difference]: With dead ends: 18168 [2021-12-17 05:00:21,611 INFO L226 Difference]: Without dead ends: 10797 [2021-12-17 05:00:21,617 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 [2021-12-17 05:00:21,620 INFO L933 BasicCegarLoop]: 367 mSDtfsCounter, 474 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 1294 mSolverCounterSat, 262 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 474 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 1556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 262 IncrementalHoareTripleChecker+Valid, 1294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-17 05:00:21,620 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [474 Valid, 413 Invalid, 1556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [262 Valid, 1294 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-17 05:00:21,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10797 states. [2021-12-17 05:00:21,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10797 to 10362. [2021-12-17 05:00:21,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10362 states, 10361 states have (on average 1.1945758131454494) internal successors, (12377), 10361 states have internal predecessors, (12377), 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) [2021-12-17 05:00:21,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10362 states to 10362 states and 12377 transitions. [2021-12-17 05:00:21,729 INFO L78 Accepts]: Start accepts. Automaton has 10362 states and 12377 transitions. Word has length 251 [2021-12-17 05:00:21,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 05:00:21,731 INFO L470 AbstractCegarLoop]: Abstraction has 10362 states and 12377 transitions. [2021-12-17 05:00:21,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 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) [2021-12-17 05:00:21,731 INFO L276 IsEmpty]: Start isEmpty. Operand 10362 states and 12377 transitions. [2021-12-17 05:00:21,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2021-12-17 05:00:21,734 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 05:00:21,734 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, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 05:00:21,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-17 05:00:21,735 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 05:00:21,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 05:00:21,737 INFO L85 PathProgramCache]: Analyzing trace with hash -212138063, now seen corresponding path program 1 times [2021-12-17 05:00:21,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 05:00:21,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25279830] [2021-12-17 05:00:21,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 05:00:21,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 05:00:21,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 05:00:21,814 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 219 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-12-17 05:00:21,814 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 05:00:21,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25279830] [2021-12-17 05:00:21,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25279830] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 05:00:21,815 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 05:00:21,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 05:00:21,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971149223] [2021-12-17 05:00:21,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 05:00:21,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 05:00:21,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 05:00:21,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 05:00:21,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 05:00:21,816 INFO L87 Difference]: Start difference. First operand 10362 states and 12377 transitions. Second operand has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 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) [2021-12-17 05:00:23,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 05:00:23,669 INFO L93 Difference]: Finished difference Result 25856 states and 31145 transitions. [2021-12-17 05:00:23,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 05:00:23,670 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 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 263 [2021-12-17 05:00:23,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 05:00:23,701 INFO L225 Difference]: With dead ends: 25856 [2021-12-17 05:00:23,701 INFO L226 Difference]: Without dead ends: 15059 [2021-12-17 05:00:23,709 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 [2021-12-17 05:00:23,710 INFO L933 BasicCegarLoop]: 588 mSDtfsCounter, 493 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 1240 mSolverCounterSat, 349 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 493 SdHoareTripleChecker+Valid, 630 SdHoareTripleChecker+Invalid, 1589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 349 IncrementalHoareTripleChecker+Valid, 1240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-17 05:00:23,710 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [493 Valid, 630 Invalid, 1589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [349 Valid, 1240 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-17 05:00:23,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15059 states. [2021-12-17 05:00:23,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15059 to 14203. [2021-12-17 05:00:23,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14203 states, 14202 states have (on average 1.1811716659625404) internal successors, (16775), 14202 states have internal predecessors, (16775), 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) [2021-12-17 05:00:23,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14203 states to 14203 states and 16775 transitions. [2021-12-17 05:00:23,851 INFO L78 Accepts]: Start accepts. Automaton has 14203 states and 16775 transitions. Word has length 263 [2021-12-17 05:00:23,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 05:00:23,852 INFO L470 AbstractCegarLoop]: Abstraction has 14203 states and 16775 transitions. [2021-12-17 05:00:23,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 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) [2021-12-17 05:00:23,852 INFO L276 IsEmpty]: Start isEmpty. Operand 14203 states and 16775 transitions. [2021-12-17 05:00:23,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2021-12-17 05:00:23,854 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 05:00:23,854 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, 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, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 05:00:23,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-17 05:00:23,855 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 05:00:23,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 05:00:23,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1010683278, now seen corresponding path program 1 times [2021-12-17 05:00:23,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 05:00:23,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339073858] [2021-12-17 05:00:23,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 05:00:23,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 05:00:23,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 05:00:23,939 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 229 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-12-17 05:00:23,939 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 05:00:23,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339073858] [2021-12-17 05:00:23,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339073858] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 05:00:23,939 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 05:00:23,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 05:00:23,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154432047] [2021-12-17 05:00:23,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 05:00:23,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 05:00:23,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 05:00:23,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 05:00:23,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 05:00:23,941 INFO L87 Difference]: Start difference. First operand 14203 states and 16775 transitions. Second operand has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 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) [2021-12-17 05:00:25,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 05:00:25,745 INFO L93 Difference]: Finished difference Result 33929 states and 40433 transitions. [2021-12-17 05:00:25,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 05:00:25,746 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 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 268 [2021-12-17 05:00:25,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 05:00:25,791 INFO L225 Difference]: With dead ends: 33929 [2021-12-17 05:00:25,791 INFO L226 Difference]: Without dead ends: 19728 [2021-12-17 05:00:25,817 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 [2021-12-17 05:00:25,817 INFO L933 BasicCegarLoop]: 760 mSDtfsCounter, 379 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 1178 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 826 SdHoareTripleChecker+Invalid, 1417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 1178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-17 05:00:25,818 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [379 Valid, 826 Invalid, 1417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 1178 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-17 05:00:25,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19728 states. [2021-12-17 05:00:25,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19728 to 18878. [2021-12-17 05:00:25,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18878 states, 18877 states have (on average 1.1560629337288764) internal successors, (21823), 18877 states have internal predecessors, (21823), 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) [2021-12-17 05:00:26,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18878 states to 18878 states and 21823 transitions. [2021-12-17 05:00:26,017 INFO L78 Accepts]: Start accepts. Automaton has 18878 states and 21823 transitions. Word has length 268 [2021-12-17 05:00:26,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 05:00:26,018 INFO L470 AbstractCegarLoop]: Abstraction has 18878 states and 21823 transitions. [2021-12-17 05:00:26,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 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) [2021-12-17 05:00:26,018 INFO L276 IsEmpty]: Start isEmpty. Operand 18878 states and 21823 transitions. [2021-12-17 05:00:26,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2021-12-17 05:00:26,021 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 05:00:26,021 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, 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, 3, 3, 3, 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] [2021-12-17 05:00:26,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-17 05:00:26,022 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 05:00:26,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 05:00:26,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1351221799, now seen corresponding path program 1 times [2021-12-17 05:00:26,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 05:00:26,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754098991] [2021-12-17 05:00:26,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 05:00:26,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 05:00:26,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 05:00:26,126 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 229 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-12-17 05:00:26,126 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 05:00:26,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754098991] [2021-12-17 05:00:26,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754098991] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 05:00:26,127 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 05:00:26,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 05:00:26,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25895320] [2021-12-17 05:00:26,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 05:00:26,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-17 05:00:26,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 05:00:26,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-17 05:00:26,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-17 05:00:26,128 INFO L87 Difference]: Start difference. First operand 18878 states and 21823 transitions. Second operand has 4 states, 4 states have (on average 52.5) internal successors, (210), 4 states have internal predecessors, (210), 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) [2021-12-17 05:00:29,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 05:00:29,127 INFO L93 Difference]: Finished difference Result 60809 states and 70117 transitions. [2021-12-17 05:00:29,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-17 05:00:29,129 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 52.5) internal successors, (210), 4 states have internal predecessors, (210), 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 291 [2021-12-17 05:00:29,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 05:00:29,222 INFO L225 Difference]: With dead ends: 60809 [2021-12-17 05:00:29,222 INFO L226 Difference]: Without dead ends: 40220 [2021-12-17 05:00:29,242 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-17 05:00:29,243 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 880 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 2762 mSolverCounterSat, 439 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 880 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 3201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 439 IncrementalHoareTripleChecker+Valid, 2762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-12-17 05:00:29,243 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [880 Valid, 318 Invalid, 3201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [439 Valid, 2762 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-12-17 05:00:29,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40220 states. [2021-12-17 05:00:29,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40220 to 39749. [2021-12-17 05:00:29,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39749 states, 39748 states have (on average 1.1313776793800947) internal successors, (44970), 39748 states have internal predecessors, (44970), 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) [2021-12-17 05:00:29,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39749 states to 39749 states and 44970 transitions. [2021-12-17 05:00:29,922 INFO L78 Accepts]: Start accepts. Automaton has 39749 states and 44970 transitions. Word has length 291 [2021-12-17 05:00:29,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 05:00:29,923 INFO L470 AbstractCegarLoop]: Abstraction has 39749 states and 44970 transitions. [2021-12-17 05:00:29,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.5) internal successors, (210), 4 states have internal predecessors, (210), 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) [2021-12-17 05:00:29,924 INFO L276 IsEmpty]: Start isEmpty. Operand 39749 states and 44970 transitions. [2021-12-17 05:00:29,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2021-12-17 05:00:29,932 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 05:00:29,932 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, 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, 3, 3, 3, 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] [2021-12-17 05:00:29,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-17 05:00:29,933 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 05:00:29,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 05:00:29,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1410506514, now seen corresponding path program 1 times [2021-12-17 05:00:29,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 05:00:29,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204434965] [2021-12-17 05:00:29,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 05:00:29,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 05:00:30,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 05:00:30,099 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 200 proven. 82 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-12-17 05:00:30,100 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 05:00:30,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204434965] [2021-12-17 05:00:30,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204434965] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 05:00:30,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963267015] [2021-12-17 05:00:30,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 05:00:30,100 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 05:00:30,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 05:00:30,101 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) [2021-12-17 05:00:30,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-17 05:00:30,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 05:00:30,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 510 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-17 05:00:30,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 05:00:31,164 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 158 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 05:00:31,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 05:00:31,858 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 311 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 05:00:31,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1963267015] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-17 05:00:31,859 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-17 05:00:31,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3, 4] total 7 [2021-12-17 05:00:31,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999532561] [2021-12-17 05:00:31,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 05:00:31,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 05:00:31,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 05:00:31,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 05:00:31,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-12-17 05:00:31,861 INFO L87 Difference]: Start difference. First operand 39749 states and 44970 transitions. Second operand has 5 states, 5 states have (on average 74.4) internal successors, (372), 4 states have internal predecessors, (372), 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) [2021-12-17 05:00:35,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 05:00:35,094 INFO L93 Difference]: Finished difference Result 105901 states and 119385 transitions. [2021-12-17 05:00:35,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 05:00:35,095 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 74.4) internal successors, (372), 4 states have internal predecessors, (372), 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 372 [2021-12-17 05:00:35,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 05:00:35,168 INFO L225 Difference]: With dead ends: 105901 [2021-12-17 05:00:35,169 INFO L226 Difference]: Without dead ends: 65302 [2021-12-17 05:00:35,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 745 GetRequests, 737 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-12-17 05:00:35,218 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 1286 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 3116 mSolverCounterSat, 635 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1286 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 3751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 635 IncrementalHoareTripleChecker+Valid, 3116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-12-17 05:00:35,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1286 Valid, 194 Invalid, 3751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [635 Valid, 3116 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-12-17 05:00:35,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65302 states. [2021-12-17 05:00:35,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65302 to 63583. [2021-12-17 05:00:35,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63583 states, 63582 states have (on average 1.101679720675663) internal successors, (70047), 63582 states have internal predecessors, (70047), 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) [2021-12-17 05:00:36,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63583 states to 63583 states and 70047 transitions. [2021-12-17 05:00:36,015 INFO L78 Accepts]: Start accepts. Automaton has 63583 states and 70047 transitions. Word has length 372 [2021-12-17 05:00:36,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 05:00:36,016 INFO L470 AbstractCegarLoop]: Abstraction has 63583 states and 70047 transitions. [2021-12-17 05:00:36,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.4) internal successors, (372), 4 states have internal predecessors, (372), 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) [2021-12-17 05:00:36,016 INFO L276 IsEmpty]: Start isEmpty. Operand 63583 states and 70047 transitions. [2021-12-17 05:00:36,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2021-12-17 05:00:36,041 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 05:00:36,041 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 05:00:36,069 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-17 05:00:36,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-17 05:00:36,258 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 05:00:36,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 05:00:36,259 INFO L85 PathProgramCache]: Analyzing trace with hash -817627984, now seen corresponding path program 1 times [2021-12-17 05:00:36,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 05:00:36,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190871947] [2021-12-17 05:00:36,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 05:00:36,259 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 05:00:36,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 05:00:36,381 INFO L134 CoverageAnalysis]: Checked inductivity of 605 backedges. 495 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-12-17 05:00:36,381 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 05:00:36,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190871947] [2021-12-17 05:00:36,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190871947] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 05:00:36,382 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 05:00:36,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 05:00:36,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72629428] [2021-12-17 05:00:36,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 05:00:36,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 05:00:36,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 05:00:36,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 05:00:36,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 05:00:36,384 INFO L87 Difference]: Start difference. First operand 63583 states and 70047 transitions. Second operand has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 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) [2021-12-17 05:00:38,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 05:00:38,842 INFO L93 Difference]: Finished difference Result 147604 states and 162997 transitions. [2021-12-17 05:00:38,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 05:00:38,843 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 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 377 [2021-12-17 05:00:38,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 05:00:38,983 INFO L225 Difference]: With dead ends: 147604 [2021-12-17 05:00:38,984 INFO L226 Difference]: Without dead ends: 83595 [2021-12-17 05:00:39,048 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 [2021-12-17 05:00:39,051 INFO L933 BasicCegarLoop]: 285 mSDtfsCounter, 397 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 1187 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 1381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 1187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-17 05:00:39,051 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [397 Valid, 334 Invalid, 1381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 1187 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-17 05:00:39,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83595 states. [2021-12-17 05:00:40,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83595 to 78041. [2021-12-17 05:00:40,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78041 states, 78040 states have (on average 1.0901973347001537) internal successors, (85079), 78040 states have internal predecessors, (85079), 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) [2021-12-17 05:00:40,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78041 states to 78041 states and 85079 transitions. [2021-12-17 05:00:40,244 INFO L78 Accepts]: Start accepts. Automaton has 78041 states and 85079 transitions. Word has length 377 [2021-12-17 05:00:40,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 05:00:40,245 INFO L470 AbstractCegarLoop]: Abstraction has 78041 states and 85079 transitions. [2021-12-17 05:00:40,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 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) [2021-12-17 05:00:40,245 INFO L276 IsEmpty]: Start isEmpty. Operand 78041 states and 85079 transitions. [2021-12-17 05:00:40,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2021-12-17 05:00:40,291 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 05:00:40,292 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 05:00:40,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-17 05:00:40,292 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 05:00:40,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 05:00:40,293 INFO L85 PathProgramCache]: Analyzing trace with hash 2097456585, now seen corresponding path program 1 times [2021-12-17 05:00:40,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 05:00:40,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678225632] [2021-12-17 05:00:40,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 05:00:40,307 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 05:00:40,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 05:00:40,810 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 301 proven. 29 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2021-12-17 05:00:40,810 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 05:00:40,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678225632] [2021-12-17 05:00:40,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678225632] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 05:00:40,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341794047] [2021-12-17 05:00:40,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 05:00:40,810 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 05:00:40,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 05:00:40,815 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) [2021-12-17 05:00:40,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-17 05:00:40,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 05:00:40,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-17 05:00:40,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 05:00:41,950 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 387 proven. 82 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2021-12-17 05:00:41,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 05:00:43,693 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 387 proven. 82 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2021-12-17 05:00:43,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341794047] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 05:00:43,693 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-17 05:00:43,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 9 [2021-12-17 05:00:43,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833517758] [2021-12-17 05:00:43,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-17 05:00:43,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 05:00:43,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 05:00:43,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 05:00:43,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-17 05:00:43,699 INFO L87 Difference]: Start difference. First operand 78041 states and 85079 transitions. Second operand has 9 states, 9 states have (on average 80.66666666666667) internal successors, (726), 9 states have internal predecessors, (726), 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) [2021-12-17 05:00:56,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 05:00:56,564 INFO L93 Difference]: Finished difference Result 206358 states and 224208 transitions. [2021-12-17 05:00:56,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-17 05:00:56,565 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 80.66666666666667) internal successors, (726), 9 states have internal predecessors, (726), 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 411 [2021-12-17 05:00:56,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 05:00:56,760 INFO L225 Difference]: With dead ends: 206358 [2021-12-17 05:00:56,761 INFO L226 Difference]: Without dead ends: 126617 [2021-12-17 05:00:56,828 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 855 GetRequests, 833 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=150, Invalid=402, Unknown=0, NotChecked=0, Total=552 [2021-12-17 05:00:56,829 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 10735 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 12779 mSolverCounterSat, 1713 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10735 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 14492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1713 IncrementalHoareTripleChecker+Valid, 12779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2021-12-17 05:00:56,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10735 Valid, 394 Invalid, 14492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1713 Valid, 12779 Invalid, 0 Unknown, 0 Unchecked, 11.4s Time] [2021-12-17 05:00:56,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126617 states. [2021-12-17 05:00:58,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126617 to 100153. [2021-12-17 05:00:58,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100153 states, 100152 states have (on average 1.0728692387570893) internal successors, (107450), 100152 states have internal predecessors, (107450), 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) [2021-12-17 05:00:58,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100153 states to 100153 states and 107450 transitions. [2021-12-17 05:00:58,464 INFO L78 Accepts]: Start accepts. Automaton has 100153 states and 107450 transitions. Word has length 411 [2021-12-17 05:00:58,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 05:00:58,465 INFO L470 AbstractCegarLoop]: Abstraction has 100153 states and 107450 transitions. [2021-12-17 05:00:58,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 80.66666666666667) internal successors, (726), 9 states have internal predecessors, (726), 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) [2021-12-17 05:00:58,465 INFO L276 IsEmpty]: Start isEmpty. Operand 100153 states and 107450 transitions. [2021-12-17 05:00:58,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 498 [2021-12-17 05:00:58,487 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 05:00:58,489 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, 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, 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, 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] [2021-12-17 05:00:58,510 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-17 05:00:58,705 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,SelfDestructingSolverStorable14 [2021-12-17 05:00:58,705 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 05:00:58,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 05:00:58,706 INFO L85 PathProgramCache]: Analyzing trace with hash 300395610, now seen corresponding path program 1 times [2021-12-17 05:00:58,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 05:00:58,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077190933] [2021-12-17 05:00:58,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 05:00:58,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 05:00:58,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 05:00:58,912 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2021-12-17 05:00:58,912 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 05:00:58,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077190933] [2021-12-17 05:00:58,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077190933] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 05:00:58,913 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 05:00:58,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 05:00:58,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023068368] [2021-12-17 05:00:58,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 05:00:58,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 05:00:58,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 05:00:58,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 05:00:58,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 05:00:58,914 INFO L87 Difference]: Start difference. First operand 100153 states and 107450 transitions. Second operand has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 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) [2021-12-17 05:01:00,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 05:01:00,789 INFO L93 Difference]: Finished difference Result 198174 states and 212622 transitions. [2021-12-17 05:01:00,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 05:01:00,790 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 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 497 [2021-12-17 05:01:00,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 05:01:00,936 INFO L225 Difference]: With dead ends: 198174 [2021-12-17 05:01:00,937 INFO L226 Difference]: Without dead ends: 98873 [2021-12-17 05:01:01,187 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 [2021-12-17 05:01:01,188 INFO L933 BasicCegarLoop]: 629 mSDtfsCounter, 451 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 1131 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 451 SdHoareTripleChecker+Valid, 685 SdHoareTripleChecker+Invalid, 1246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-17 05:01:01,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [451 Valid, 685 Invalid, 1246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 1131 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-17 05:01:01,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98873 states. [2021-12-17 05:01:02,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98873 to 98445. [2021-12-17 05:01:02,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98445 states, 98444 states have (on average 1.0620251107228476) internal successors, (104550), 98444 states have internal predecessors, (104550), 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) [2021-12-17 05:01:02,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98445 states to 98445 states and 104550 transitions. [2021-12-17 05:01:02,548 INFO L78 Accepts]: Start accepts. Automaton has 98445 states and 104550 transitions. Word has length 497 [2021-12-17 05:01:02,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 05:01:02,549 INFO L470 AbstractCegarLoop]: Abstraction has 98445 states and 104550 transitions. [2021-12-17 05:01:02,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 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) [2021-12-17 05:01:02,549 INFO L276 IsEmpty]: Start isEmpty. Operand 98445 states and 104550 transitions. [2021-12-17 05:01:02,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 599 [2021-12-17 05:01:02,564 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 05:01:02,565 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 05:01:02,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-17 05:01:02,565 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 05:01:02,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 05:01:02,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1778925136, now seen corresponding path program 1 times [2021-12-17 05:01:02,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 05:01:02,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995691881] [2021-12-17 05:01:02,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 05:01:02,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 05:01:02,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 05:01:02,991 INFO L134 CoverageAnalysis]: Checked inductivity of 1008 backedges. 498 proven. 0 refuted. 0 times theorem prover too weak. 510 trivial. 0 not checked. [2021-12-17 05:01:02,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 05:01:02,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995691881] [2021-12-17 05:01:02,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995691881] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 05:01:02,992 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 05:01:02,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 05:01:02,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108364868] [2021-12-17 05:01:02,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 05:01:02,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-17 05:01:02,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 05:01:02,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-17 05:01:02,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-17 05:01:02,994 INFO L87 Difference]: Start difference. First operand 98445 states and 104550 transitions. Second operand has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 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) [2021-12-17 05:01:06,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 05:01:06,223 INFO L93 Difference]: Finished difference Result 216070 states and 229004 transitions. [2021-12-17 05:01:06,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-17 05:01:06,224 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 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 598 [2021-12-17 05:01:06,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 05:01:06,558 INFO L225 Difference]: With dead ends: 216070 [2021-12-17 05:01:06,558 INFO L226 Difference]: Without dead ends: 117627 [2021-12-17 05:01:06,584 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-17 05:01:06,584 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 833 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 2414 mSolverCounterSat, 386 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 833 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 2800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 386 IncrementalHoareTripleChecker+Valid, 2414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-17 05:01:06,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [833 Valid, 153 Invalid, 2800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [386 Valid, 2414 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-17 05:01:06,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117627 states. [2021-12-17 05:01:07,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117627 to 104826. [2021-12-17 05:01:07,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104826 states, 104825 states have (on average 1.0607011686143573) internal successors, (111188), 104825 states have internal predecessors, (111188), 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) [2021-12-17 05:01:07,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104826 states to 104826 states and 111188 transitions. [2021-12-17 05:01:07,954 INFO L78 Accepts]: Start accepts. Automaton has 104826 states and 111188 transitions. Word has length 598 [2021-12-17 05:01:07,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 05:01:07,955 INFO L470 AbstractCegarLoop]: Abstraction has 104826 states and 111188 transitions. [2021-12-17 05:01:07,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 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) [2021-12-17 05:01:07,955 INFO L276 IsEmpty]: Start isEmpty. Operand 104826 states and 111188 transitions. [2021-12-17 05:01:07,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 689 [2021-12-17 05:01:07,980 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 05:01:07,980 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 05:01:07,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-17 05:01:07,981 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 05:01:07,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 05:01:07,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1905297710, now seen corresponding path program 1 times [2021-12-17 05:01:07,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 05:01:07,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37453380] [2021-12-17 05:01:07,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 05:01:07,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 05:01:08,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 05:01:08,186 INFO L134 CoverageAnalysis]: Checked inductivity of 1440 backedges. 798 proven. 0 refuted. 0 times theorem prover too weak. 642 trivial. 0 not checked. [2021-12-17 05:01:08,187 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 05:01:08,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37453380] [2021-12-17 05:01:08,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37453380] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 05:01:08,187 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 05:01:08,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 05:01:08,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588950826] [2021-12-17 05:01:08,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 05:01:08,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 05:01:08,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 05:01:08,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 05:01:08,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 05:01:08,189 INFO L87 Difference]: Start difference. First operand 104826 states and 111188 transitions. Second operand has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 2 states have internal predecessors, (325), 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) [2021-12-17 05:01:10,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 05:01:10,002 INFO L93 Difference]: Finished difference Result 203684 states and 216132 transitions. [2021-12-17 05:01:10,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 05:01:10,004 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 2 states have internal predecessors, (325), 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 688 [2021-12-17 05:01:10,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 05:01:10,167 INFO L225 Difference]: With dead ends: 203684 [2021-12-17 05:01:10,167 INFO L226 Difference]: Without dead ends: 99709 [2021-12-17 05:01:10,228 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 [2021-12-17 05:01:10,229 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 574 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 624 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 574 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-17 05:01:10,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [574 Valid, 84 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 624 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-17 05:01:10,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99709 states. [2021-12-17 05:01:11,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99709 to 99698. [2021-12-17 05:01:11,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99698 states, 99697 states have (on average 1.060754084877178) internal successors, (105754), 99697 states have internal predecessors, (105754), 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) [2021-12-17 05:01:11,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99698 states to 99698 states and 105754 transitions. [2021-12-17 05:01:11,766 INFO L78 Accepts]: Start accepts. Automaton has 99698 states and 105754 transitions. Word has length 688 [2021-12-17 05:01:11,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 05:01:11,767 INFO L470 AbstractCegarLoop]: Abstraction has 99698 states and 105754 transitions. [2021-12-17 05:01:11,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 2 states have internal predecessors, (325), 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) [2021-12-17 05:01:11,767 INFO L276 IsEmpty]: Start isEmpty. Operand 99698 states and 105754 transitions. [2021-12-17 05:01:11,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 689 [2021-12-17 05:01:11,791 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 05:01:11,791 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 05:01:11,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-17 05:01:11,792 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 05:01:11,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 05:01:11,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1445674768, now seen corresponding path program 1 times [2021-12-17 05:01:11,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 05:01:11,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342975743] [2021-12-17 05:01:11,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 05:01:11,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 05:01:11,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 05:01:12,015 INFO L134 CoverageAnalysis]: Checked inductivity of 1440 backedges. 532 proven. 0 refuted. 0 times theorem prover too weak. 908 trivial. 0 not checked. [2021-12-17 05:01:12,015 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 05:01:12,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342975743] [2021-12-17 05:01:12,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342975743] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 05:01:12,015 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 05:01:12,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 05:01:12,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785191024] [2021-12-17 05:01:12,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 05:01:12,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-17 05:01:12,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 05:01:12,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-17 05:01:12,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-17 05:01:12,018 INFO L87 Difference]: Start difference. First operand 99698 states and 105754 transitions. Second operand has 4 states, 4 states have (on average 74.0) internal successors, (296), 4 states have internal predecessors, (296), 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) [2021-12-17 05:01:15,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 05:01:15,030 INFO L93 Difference]: Finished difference Result 107395 states and 113673 transitions. [2021-12-17 05:01:15,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-17 05:01:15,034 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 74.0) internal successors, (296), 4 states have internal predecessors, (296), 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 688 [2021-12-17 05:01:15,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 05:01:15,153 INFO L225 Difference]: With dead ends: 107395 [2021-12-17 05:01:15,154 INFO L226 Difference]: Without dead ends: 106968 [2021-12-17 05:01:15,168 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-17 05:01:15,169 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 852 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 2423 mSolverCounterSat, 291 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 852 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 2714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 291 IncrementalHoareTripleChecker+Valid, 2423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-17 05:01:15,169 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [852 Valid, 159 Invalid, 2714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [291 Valid, 2423 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-12-17 05:01:15,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106968 states. [2021-12-17 05:01:16,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106968 to 99698. [2021-12-17 05:01:16,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99698 states, 99697 states have (on average 1.0606638113483855) internal successors, (105745), 99697 states have internal predecessors, (105745), 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) [2021-12-17 05:01:16,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99698 states to 99698 states and 105745 transitions. [2021-12-17 05:01:16,364 INFO L78 Accepts]: Start accepts. Automaton has 99698 states and 105745 transitions. Word has length 688 [2021-12-17 05:01:16,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 05:01:16,364 INFO L470 AbstractCegarLoop]: Abstraction has 99698 states and 105745 transitions. [2021-12-17 05:01:16,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.0) internal successors, (296), 4 states have internal predecessors, (296), 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) [2021-12-17 05:01:16,365 INFO L276 IsEmpty]: Start isEmpty. Operand 99698 states and 105745 transitions. [2021-12-17 05:01:16,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 721 [2021-12-17 05:01:16,648 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 05:01:16,649 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 05:01:16,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-17 05:01:16,649 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 05:01:16,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 05:01:16,650 INFO L85 PathProgramCache]: Analyzing trace with hash -702093903, now seen corresponding path program 1 times [2021-12-17 05:01:16,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 05:01:16,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244994512] [2021-12-17 05:01:16,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 05:01:16,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 05:01:16,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 05:01:16,850 INFO L134 CoverageAnalysis]: Checked inductivity of 941 backedges. 683 proven. 0 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2021-12-17 05:01:16,850 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 05:01:16,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244994512] [2021-12-17 05:01:16,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244994512] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 05:01:16,851 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 05:01:16,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 05:01:16,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848223409] [2021-12-17 05:01:16,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 05:01:16,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 05:01:16,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 05:01:16,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 05:01:16,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 05:01:16,853 INFO L87 Difference]: Start difference. First operand 99698 states and 105745 transitions. Second operand has 3 states, 3 states have (on average 179.33333333333334) internal successors, (538), 3 states have internal predecessors, (538), 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) [2021-12-17 05:01:18,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 05:01:18,639 INFO L93 Difference]: Finished difference Result 199396 states and 211510 transitions. [2021-12-17 05:01:18,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 05:01:18,639 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 179.33333333333334) internal successors, (538), 3 states have internal predecessors, (538), 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 720 [2021-12-17 05:01:18,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 05:01:18,790 INFO L225 Difference]: With dead ends: 199396 [2021-12-17 05:01:18,790 INFO L226 Difference]: Without dead ends: 100550 [2021-12-17 05:01:18,825 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 [2021-12-17 05:01:18,826 INFO L933 BasicCegarLoop]: 708 mSDtfsCounter, 94 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1106 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 1138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-17 05:01:18,827 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 752 Invalid, 1138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1106 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-17 05:01:18,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100550 states. [2021-12-17 05:01:20,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100550 to 100549. [2021-12-17 05:01:20,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100549 states, 100548 states have (on average 1.0601105939451805) internal successors, (106592), 100548 states have internal predecessors, (106592), 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) [2021-12-17 05:01:20,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100549 states to 100549 states and 106592 transitions. [2021-12-17 05:01:20,298 INFO L78 Accepts]: Start accepts. Automaton has 100549 states and 106592 transitions. Word has length 720 [2021-12-17 05:01:20,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 05:01:20,299 INFO L470 AbstractCegarLoop]: Abstraction has 100549 states and 106592 transitions. [2021-12-17 05:01:20,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 179.33333333333334) internal successors, (538), 3 states have internal predecessors, (538), 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) [2021-12-17 05:01:20,299 INFO L276 IsEmpty]: Start isEmpty. Operand 100549 states and 106592 transitions. [2021-12-17 05:01:20,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 730 [2021-12-17 05:01:20,333 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 05:01:20,333 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, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-17 05:01:20,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-17 05:01:20,334 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 05:01:20,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 05:01:20,335 INFO L85 PathProgramCache]: Analyzing trace with hash 475430121, now seen corresponding path program 1 times [2021-12-17 05:01:20,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 05:01:20,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775796568] [2021-12-17 05:01:20,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 05:01:20,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 05:01:20,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 05:01:20,545 INFO L134 CoverageAnalysis]: Checked inductivity of 1221 backedges. 982 proven. 0 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2021-12-17 05:01:20,545 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 05:01:20,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775796568] [2021-12-17 05:01:20,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775796568] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 05:01:20,545 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 05:01:20,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 05:01:20,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139807030] [2021-12-17 05:01:20,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 05:01:20,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 05:01:20,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 05:01:20,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 05:01:20,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 05:01:20,549 INFO L87 Difference]: Start difference. First operand 100549 states and 106592 transitions. Second operand has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 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) [2021-12-17 05:01:22,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 05:01:22,804 INFO L93 Difference]: Finished difference Result 210488 states and 223369 transitions. [2021-12-17 05:01:22,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 05:01:22,804 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 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 729 [2021-12-17 05:01:22,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 05:01:22,941 INFO L225 Difference]: With dead ends: 210488 [2021-12-17 05:01:22,941 INFO L226 Difference]: Without dead ends: 110791 [2021-12-17 05:01:23,000 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 [2021-12-17 05:01:23,001 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 292 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 1156 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 1359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 1156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-17 05:01:23,001 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [292 Valid, 183 Invalid, 1359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 1156 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-17 05:01:23,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110791 states. [2021-12-17 05:01:24,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110791 to 105230. [2021-12-17 05:01:24,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105230 states, 105229 states have (on average 1.0603730910680516) internal successors, (111582), 105229 states have internal predecessors, (111582), 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) [2021-12-17 05:01:24,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105230 states to 105230 states and 111582 transitions. [2021-12-17 05:01:24,826 INFO L78 Accepts]: Start accepts. Automaton has 105230 states and 111582 transitions. Word has length 729 [2021-12-17 05:01:24,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 05:01:24,827 INFO L470 AbstractCegarLoop]: Abstraction has 105230 states and 111582 transitions. [2021-12-17 05:01:24,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 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) [2021-12-17 05:01:24,827 INFO L276 IsEmpty]: Start isEmpty. Operand 105230 states and 111582 transitions. [2021-12-17 05:01:24,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 737 [2021-12-17 05:01:24,849 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 05:01:24,850 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 05:01:24,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-17 05:01:24,850 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 05:01:24,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 05:01:24,851 INFO L85 PathProgramCache]: Analyzing trace with hash 380376202, now seen corresponding path program 1 times [2021-12-17 05:01:24,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 05:01:24,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274531436] [2021-12-17 05:01:24,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 05:01:24,851 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 05:01:24,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 05:01:25,102 INFO L134 CoverageAnalysis]: Checked inductivity of 734 backedges. 489 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2021-12-17 05:01:25,103 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 05:01:25,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274531436] [2021-12-17 05:01:25,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274531436] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 05:01:25,103 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 05:01:25,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 05:01:25,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359834109] [2021-12-17 05:01:25,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 05:01:25,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-17 05:01:25,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 05:01:25,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-17 05:01:25,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-17 05:01:25,106 INFO L87 Difference]: Start difference. First operand 105230 states and 111582 transitions. Second operand has 4 states, 4 states have (on average 143.5) internal successors, (574), 4 states have internal predecessors, (574), 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) [2021-12-17 05:01:28,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 05:01:28,199 INFO L93 Difference]: Finished difference Result 227505 states and 240749 transitions. [2021-12-17 05:01:28,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-17 05:01:28,200 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 143.5) internal successors, (574), 4 states have internal predecessors, (574), 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 736 [2021-12-17 05:01:28,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 05:01:28,378 INFO L225 Difference]: With dead ends: 227505 [2021-12-17 05:01:28,378 INFO L226 Difference]: Without dead ends: 122277 [2021-12-17 05:01:28,443 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-17 05:01:28,444 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 730 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 2329 mSolverCounterSat, 383 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 2712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 383 IncrementalHoareTripleChecker+Valid, 2329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-17 05:01:28,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [730 Valid, 108 Invalid, 2712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [383 Valid, 2329 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-17 05:01:28,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122277 states. [2021-12-17 05:01:29,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122277 to 102251. [2021-12-17 05:01:29,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102251 states, 102250 states have (on average 1.0607726161369193) internal successors, (108464), 102250 states have internal predecessors, (108464), 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) [2021-12-17 05:01:30,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102251 states to 102251 states and 108464 transitions. [2021-12-17 05:01:30,145 INFO L78 Accepts]: Start accepts. Automaton has 102251 states and 108464 transitions. Word has length 736 [2021-12-17 05:01:30,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 05:01:30,146 INFO L470 AbstractCegarLoop]: Abstraction has 102251 states and 108464 transitions. [2021-12-17 05:01:30,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 143.5) internal successors, (574), 4 states have internal predecessors, (574), 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) [2021-12-17 05:01:30,146 INFO L276 IsEmpty]: Start isEmpty. Operand 102251 states and 108464 transitions. [2021-12-17 05:01:30,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 747 [2021-12-17 05:01:30,167 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 05:01:30,168 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 05:01:30,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-17 05:01:30,168 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 05:01:30,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 05:01:30,169 INFO L85 PathProgramCache]: Analyzing trace with hash 915800938, now seen corresponding path program 1 times [2021-12-17 05:01:30,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 05:01:30,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502895796] [2021-12-17 05:01:30,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 05:01:30,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 05:01:30,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 05:01:30,441 INFO L134 CoverageAnalysis]: Checked inductivity of 670 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2021-12-17 05:01:30,441 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 05:01:30,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502895796] [2021-12-17 05:01:30,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502895796] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 05:01:30,442 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 05:01:30,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 05:01:30,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013680331] [2021-12-17 05:01:30,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 05:01:30,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-17 05:01:30,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 05:01:30,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-17 05:01:30,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-17 05:01:30,444 INFO L87 Difference]: Start difference. First operand 102251 states and 108464 transitions. Second operand has 4 states, 4 states have (on average 109.75) internal successors, (439), 4 states have internal predecessors, (439), 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) [2021-12-17 05:01:33,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 05:01:33,464 INFO L93 Difference]: Finished difference Result 226261 states and 239709 transitions. [2021-12-17 05:01:33,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-17 05:01:33,473 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 109.75) internal successors, (439), 4 states have internal predecessors, (439), 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 746 [2021-12-17 05:01:33,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 05:01:33,611 INFO L225 Difference]: With dead ends: 226261 [2021-12-17 05:01:33,611 INFO L226 Difference]: Without dead ends: 124006 [2021-12-17 05:01:33,663 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-17 05:01:33,664 INFO L933 BasicCegarLoop]: 525 mSDtfsCounter, 975 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 2196 mSolverCounterSat, 298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 975 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 2494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 2196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-17 05:01:33,664 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [975 Valid, 577 Invalid, 2494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 2196 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-17 05:01:33,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124006 states. [2021-12-17 05:01:34,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124006 to 103095. [2021-12-17 05:01:34,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103095 states, 103094 states have (on average 1.0598094942479679) internal successors, (109260), 103094 states have internal predecessors, (109260), 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) [2021-12-17 05:01:35,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103095 states to 103095 states and 109260 transitions. [2021-12-17 05:01:35,104 INFO L78 Accepts]: Start accepts. Automaton has 103095 states and 109260 transitions. Word has length 746 [2021-12-17 05:01:35,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 05:01:35,105 INFO L470 AbstractCegarLoop]: Abstraction has 103095 states and 109260 transitions. [2021-12-17 05:01:35,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 109.75) internal successors, (439), 4 states have internal predecessors, (439), 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) [2021-12-17 05:01:35,105 INFO L276 IsEmpty]: Start isEmpty. Operand 103095 states and 109260 transitions. [2021-12-17 05:01:35,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 900 [2021-12-17 05:01:35,141 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 05:01:35,142 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 05:01:35,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-17 05:01:35,142 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 05:01:35,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 05:01:35,142 INFO L85 PathProgramCache]: Analyzing trace with hash 714556462, now seen corresponding path program 1 times [2021-12-17 05:01:35,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 05:01:35,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775092299] [2021-12-17 05:01:35,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 05:01:35,143 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 05:01:35,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 05:01:35,754 INFO L134 CoverageAnalysis]: Checked inductivity of 1346 backedges. 1012 proven. 0 refuted. 0 times theorem prover too weak. 334 trivial. 0 not checked. [2021-12-17 05:01:35,755 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 05:01:35,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775092299] [2021-12-17 05:01:35,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775092299] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 05:01:35,755 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 05:01:35,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 05:01:35,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430541999] [2021-12-17 05:01:35,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 05:01:35,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-17 05:01:35,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 05:01:35,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-17 05:01:35,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-17 05:01:35,757 INFO L87 Difference]: Start difference. First operand 103095 states and 109260 transitions. Second operand has 4 states, 4 states have (on average 162.5) internal successors, (650), 4 states have internal predecessors, (650), 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) [2021-12-17 05:01:38,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 05:01:38,145 INFO L93 Difference]: Finished difference Result 214726 states and 227438 transitions. [2021-12-17 05:01:38,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-17 05:01:38,146 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 162.5) internal successors, (650), 4 states have internal predecessors, (650), 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 899 [2021-12-17 05:01:38,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 05:01:38,279 INFO L225 Difference]: With dead ends: 214726 [2021-12-17 05:01:38,280 INFO L226 Difference]: Without dead ends: 112058 [2021-12-17 05:01:38,338 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-17 05:01:38,340 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 802 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 2133 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 802 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 2391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 2133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-17 05:01:38,340 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [802 Valid, 199 Invalid, 2391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 2133 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-17 05:01:38,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112058 states. [2021-12-17 05:01:39,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112058 to 98832. [2021-12-17 05:01:39,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98832 states, 98831 states have (on average 1.0580485879936457) internal successors, (104568), 98831 states have internal predecessors, (104568), 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) [2021-12-17 05:01:40,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98832 states to 98832 states and 104568 transitions. [2021-12-17 05:01:40,009 INFO L78 Accepts]: Start accepts. Automaton has 98832 states and 104568 transitions. Word has length 899 [2021-12-17 05:01:40,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 05:01:40,009 INFO L470 AbstractCegarLoop]: Abstraction has 98832 states and 104568 transitions. [2021-12-17 05:01:40,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 162.5) internal successors, (650), 4 states have internal predecessors, (650), 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) [2021-12-17 05:01:40,010 INFO L276 IsEmpty]: Start isEmpty. Operand 98832 states and 104568 transitions. [2021-12-17 05:01:40,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 962 [2021-12-17 05:01:40,054 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 05:01:40,055 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, 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, 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, 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 05:01:40,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-17 05:01:40,055 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 05:01:40,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 05:01:40,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1937745590, now seen corresponding path program 1 times [2021-12-17 05:01:40,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 05:01:40,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144617388] [2021-12-17 05:01:40,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 05:01:40,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 05:01:40,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 05:01:40,357 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 671 proven. 0 refuted. 0 times theorem prover too weak. 572 trivial. 0 not checked. [2021-12-17 05:01:40,357 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 05:01:40,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144617388] [2021-12-17 05:01:40,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144617388] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 05:01:40,358 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 05:01:40,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 05:01:40,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163769212] [2021-12-17 05:01:40,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 05:01:40,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 05:01:40,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 05:01:40,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 05:01:40,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 05:01:40,360 INFO L87 Difference]: Start difference. First operand 98832 states and 104568 transitions. Second operand has 3 states, 3 states have (on average 212.33333333333334) internal successors, (637), 3 states have internal predecessors, (637), 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)