./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem13_label29.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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/Problem13_label29.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 8f598b1db7f2b2cd1017a328f20419506fd47df23c7e336ea67891b462314c30 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-20 23:54:19,788 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-20 23:54:19,789 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-20 23:54:19,828 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-20 23:54:19,828 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-20 23:54:19,830 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-20 23:54:19,834 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-20 23:54:19,836 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-20 23:54:19,838 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-20 23:54:19,841 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-20 23:54:19,842 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-20 23:54:19,844 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-20 23:54:19,844 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-20 23:54:19,846 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-20 23:54:19,847 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-20 23:54:19,849 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-20 23:54:19,850 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-20 23:54:19,851 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-20 23:54:19,853 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-20 23:54:19,856 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-20 23:54:19,857 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-20 23:54:19,858 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-20 23:54:19,859 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-20 23:54:19,860 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-20 23:54:19,861 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-20 23:54:19,866 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-20 23:54:19,866 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-20 23:54:19,866 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-20 23:54:19,867 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-20 23:54:19,867 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-20 23:54:19,868 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-20 23:54:19,868 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-20 23:54:19,869 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-20 23:54:19,870 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-20 23:54:19,871 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-20 23:54:19,871 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-20 23:54:19,872 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-20 23:54:19,872 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-20 23:54:19,872 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-20 23:54:19,872 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-20 23:54:19,873 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-20 23:54:19,874 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-20 23:54:19,875 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-20 23:54:19,895 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-20 23:54:19,895 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-20 23:54:19,896 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-20 23:54:19,896 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-20 23:54:19,896 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-20 23:54:19,896 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-20 23:54:19,897 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-20 23:54:19,897 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-20 23:54:19,897 INFO L138 SettingsManager]: * Use SBE=true [2022-07-20 23:54:19,898 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-20 23:54:19,898 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-20 23:54:19,898 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-20 23:54:19,899 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-20 23:54:19,899 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-20 23:54:19,899 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-20 23:54:19,899 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-20 23:54:19,899 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-20 23:54:19,899 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-20 23:54:19,899 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-20 23:54:19,899 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-20 23:54:19,900 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-20 23:54:19,900 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-20 23:54:19,900 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-20 23:54:19,900 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-20 23:54:19,900 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 23:54:19,901 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-20 23:54:19,901 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-20 23:54:19,901 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-20 23:54:19,901 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-20 23:54:19,901 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-20 23:54:19,901 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-20 23:54:19,901 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-20 23:54:19,902 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-20 23:54:19,902 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8f598b1db7f2b2cd1017a328f20419506fd47df23c7e336ea67891b462314c30 [2022-07-20 23:54:20,170 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-20 23:54:20,190 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-20 23:54:20,192 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-20 23:54:20,192 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-20 23:54:20,193 INFO L275 PluginConnector]: CDTParser initialized [2022-07-20 23:54:20,193 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem13_label29.c [2022-07-20 23:54:20,234 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5f1393bd/c40985558eae435c83a46890292ea31d/FLAG97a606b53 [2022-07-20 23:54:20,802 INFO L306 CDTParser]: Found 1 translation units. [2022-07-20 23:54:20,803 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label29.c [2022-07-20 23:54:20,831 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5f1393bd/c40985558eae435c83a46890292ea31d/FLAG97a606b53 [2022-07-20 23:54:21,008 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5f1393bd/c40985558eae435c83a46890292ea31d [2022-07-20 23:54:21,009 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-20 23:54:21,010 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-20 23:54:21,012 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-20 23:54:21,012 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-20 23:54:21,017 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-20 23:54:21,017 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:54:21" (1/1) ... [2022-07-20 23:54:21,018 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cc13302 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:54:21, skipping insertion in model container [2022-07-20 23:54:21,018 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:54:21" (1/1) ... [2022-07-20 23:54:21,041 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-20 23:54:21,129 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-20 23:54:21,314 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/Problem13_label29.c[2333,2346] [2022-07-20 23:54:21,918 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 23:54:21,924 INFO L203 MainTranslator]: Completed pre-run [2022-07-20 23:54:21,943 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/Problem13_label29.c[2333,2346] [2022-07-20 23:54:22,308 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 23:54:22,326 INFO L208 MainTranslator]: Completed translation [2022-07-20 23:54:22,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:54:22 WrapperNode [2022-07-20 23:54:22,327 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-20 23:54:22,328 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-20 23:54:22,328 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-20 23:54:22,328 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-20 23:54:22,333 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:54:22" (1/1) ... [2022-07-20 23:54:22,423 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:54:22" (1/1) ... [2022-07-20 23:54:22,868 INFO L137 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5583 [2022-07-20 23:54:22,869 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-20 23:54:22,870 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-20 23:54:22,870 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-20 23:54:22,870 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-20 23:54:22,876 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:54:22" (1/1) ... [2022-07-20 23:54:22,876 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:54:22" (1/1) ... [2022-07-20 23:54:23,016 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:54:22" (1/1) ... [2022-07-20 23:54:23,016 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:54:22" (1/1) ... [2022-07-20 23:54:23,210 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:54:22" (1/1) ... [2022-07-20 23:54:23,232 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:54:22" (1/1) ... [2022-07-20 23:54:23,304 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:54:22" (1/1) ... [2022-07-20 23:54:23,398 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-20 23:54:23,400 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-20 23:54:23,400 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-20 23:54:23,400 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-20 23:54:23,401 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:54:22" (1/1) ... [2022-07-20 23:54:23,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 23:54:23,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 23:54:23,464 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-20 23:54:23,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-20 23:54:23,529 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-20 23:54:23,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-20 23:54:23,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-20 23:54:23,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-20 23:54:23,589 INFO L234 CfgBuilder]: Building ICFG [2022-07-20 23:54:23,591 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-20 23:54:27,000 INFO L275 CfgBuilder]: Performing block encoding [2022-07-20 23:54:27,011 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-20 23:54:27,011 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-20 23:54:27,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:54:27 BoogieIcfgContainer [2022-07-20 23:54:27,013 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-20 23:54:27,015 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-20 23:54:27,015 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-20 23:54:27,017 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-20 23:54:27,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 11:54:21" (1/3) ... [2022-07-20 23:54:27,017 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@504cfea4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:54:27, skipping insertion in model container [2022-07-20 23:54:27,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:54:22" (2/3) ... [2022-07-20 23:54:27,018 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@504cfea4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:54:27, skipping insertion in model container [2022-07-20 23:54:27,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:54:27" (3/3) ... [2022-07-20 23:54:27,018 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem13_label29.c [2022-07-20 23:54:27,031 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-20 23:54:27,035 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-20 23:54:27,103 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-20 23:54:27,110 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2613baf, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6f12a09c [2022-07-20 23:54:27,110 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-20 23:54:27,117 INFO L276 IsEmpty]: Start isEmpty. Operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:54:27,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-07-20 23:54:27,121 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:54:27,122 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 23:54:27,122 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:54:27,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:54:27,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1414013846, now seen corresponding path program 1 times [2022-07-20 23:54:27,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:54:27,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126031710] [2022-07-20 23:54:27,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:54:27,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:54:27,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:54:27,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 23:54:27,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:54:27,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126031710] [2022-07-20 23:54:27,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126031710] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:54:27,269 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 23:54:27,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-20 23:54:27,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853003922] [2022-07-20 23:54:27,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:54:27,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 23:54:27,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:54:27,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 23:54:27,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:54:27,302 INFO L87 Difference]: Start difference. First operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 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 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:54:30,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:54:30,929 INFO L93 Difference]: Finished difference Result 3082 states and 5689 transitions. [2022-07-20 23:54:30,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 23:54:30,931 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 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 14 [2022-07-20 23:54:30,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:54:30,948 INFO L225 Difference]: With dead ends: 3082 [2022-07-20 23:54:30,948 INFO L226 Difference]: Without dead ends: 1899 [2022-07-20 23:54:30,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:54:30,955 INFO L413 NwaCegarLoop]: 470 mSDtfsCounter, 1025 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 2955 mSolverCounterSat, 599 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1025 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 3554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 599 IncrementalHoareTripleChecker+Valid, 2955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-07-20 23:54:30,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1025 Valid, 641 Invalid, 3554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [599 Valid, 2955 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-07-20 23:54:30,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1899 states. [2022-07-20 23:54:31,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1899 to 1894. [2022-07-20 23:54:31,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1894 states, 1893 states have (on average 1.7374537770734284) internal successors, (3289), 1893 states have internal predecessors, (3289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:54:31,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1894 states to 1894 states and 3289 transitions. [2022-07-20 23:54:31,058 INFO L78 Accepts]: Start accepts. Automaton has 1894 states and 3289 transitions. Word has length 14 [2022-07-20 23:54:31,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:54:31,059 INFO L495 AbstractCegarLoop]: Abstraction has 1894 states and 3289 transitions. [2022-07-20 23:54:31,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:54:31,059 INFO L276 IsEmpty]: Start isEmpty. Operand 1894 states and 3289 transitions. [2022-07-20 23:54:31,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-20 23:54:31,061 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:54:31,062 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 23:54:31,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-20 23:54:31,062 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:54:31,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:54:31,063 INFO L85 PathProgramCache]: Analyzing trace with hash 107877298, now seen corresponding path program 1 times [2022-07-20 23:54:31,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:54:31,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746816676] [2022-07-20 23:54:31,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:54:31,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:54:31,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:54:31,196 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 23:54:31,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:54:31,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746816676] [2022-07-20 23:54:31,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746816676] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:54:31,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 23:54:31,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-20 23:54:31,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337580863] [2022-07-20 23:54:31,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:54:31,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 23:54:31,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:54:31,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 23:54:31,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:54:31,201 INFO L87 Difference]: Start difference. First operand 1894 states and 3289 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:54:34,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:54:34,091 INFO L93 Difference]: Finished difference Result 5384 states and 9441 transitions. [2022-07-20 23:54:34,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 23:54:34,108 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 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 79 [2022-07-20 23:54:34,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:54:34,119 INFO L225 Difference]: With dead ends: 5384 [2022-07-20 23:54:34,119 INFO L226 Difference]: Without dead ends: 3492 [2022-07-20 23:54:34,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:54:34,127 INFO L413 NwaCegarLoop]: 860 mSDtfsCounter, 922 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 2310 mSolverCounterSat, 879 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 922 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 3189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 879 IncrementalHoareTripleChecker+Valid, 2310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-20 23:54:34,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [922 Valid, 1013 Invalid, 3189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [879 Valid, 2310 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-20 23:54:34,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3492 states. [2022-07-20 23:54:34,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3492 to 3491. [2022-07-20 23:54:34,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3491 states, 3490 states have (on average 1.5383954154727795) internal successors, (5369), 3490 states have internal predecessors, (5369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:54:34,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3491 states to 3491 states and 5369 transitions. [2022-07-20 23:54:34,186 INFO L78 Accepts]: Start accepts. Automaton has 3491 states and 5369 transitions. Word has length 79 [2022-07-20 23:54:34,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:54:34,187 INFO L495 AbstractCegarLoop]: Abstraction has 3491 states and 5369 transitions. [2022-07-20 23:54:34,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:54:34,187 INFO L276 IsEmpty]: Start isEmpty. Operand 3491 states and 5369 transitions. [2022-07-20 23:54:34,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-07-20 23:54:34,191 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:54:34,192 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 23:54:34,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-20 23:54:34,194 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:54:34,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:54:34,195 INFO L85 PathProgramCache]: Analyzing trace with hash -845828371, now seen corresponding path program 1 times [2022-07-20 23:54:34,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:54:34,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097608181] [2022-07-20 23:54:34,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:54:34,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:54:34,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:54:34,280 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 23:54:34,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:54:34,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097608181] [2022-07-20 23:54:34,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097608181] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:54:34,281 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 23:54:34,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-20 23:54:34,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687307076] [2022-07-20 23:54:34,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:54:34,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 23:54:34,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:54:34,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 23:54:34,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:54:34,283 INFO L87 Difference]: Start difference. First operand 3491 states and 5369 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:54:37,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:54:37,026 INFO L93 Difference]: Finished difference Result 10169 states and 15700 transitions. [2022-07-20 23:54:37,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 23:54:37,034 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 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 81 [2022-07-20 23:54:37,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:54:37,052 INFO L225 Difference]: With dead ends: 10169 [2022-07-20 23:54:37,052 INFO L226 Difference]: Without dead ends: 6680 [2022-07-20 23:54:37,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:54:37,063 INFO L413 NwaCegarLoop]: 714 mSDtfsCounter, 977 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2533 mSolverCounterSat, 775 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 977 SdHoareTripleChecker+Valid, 847 SdHoareTripleChecker+Invalid, 3308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 775 IncrementalHoareTripleChecker+Valid, 2533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-20 23:54:37,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [977 Valid, 847 Invalid, 3308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [775 Valid, 2533 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-20 23:54:37,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6680 states. [2022-07-20 23:54:37,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6680 to 6669. [2022-07-20 23:54:37,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6669 states, 6668 states have (on average 1.375224955008998) internal successors, (9170), 6668 states have internal predecessors, (9170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:54:37,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6669 states to 6669 states and 9170 transitions. [2022-07-20 23:54:37,221 INFO L78 Accepts]: Start accepts. Automaton has 6669 states and 9170 transitions. Word has length 81 [2022-07-20 23:54:37,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:54:37,222 INFO L495 AbstractCegarLoop]: Abstraction has 6669 states and 9170 transitions. [2022-07-20 23:54:37,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:54:37,223 INFO L276 IsEmpty]: Start isEmpty. Operand 6669 states and 9170 transitions. [2022-07-20 23:54:37,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-07-20 23:54:37,228 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:54:37,228 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 23:54:37,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-20 23:54:37,229 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:54:37,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:54:37,231 INFO L85 PathProgramCache]: Analyzing trace with hash -477490145, now seen corresponding path program 1 times [2022-07-20 23:54:37,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:54:37,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687693752] [2022-07-20 23:54:37,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:54:37,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:54:37,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:54:37,333 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 23:54:37,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:54:37,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687693752] [2022-07-20 23:54:37,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687693752] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:54:37,334 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 23:54:37,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 23:54:37,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726996035] [2022-07-20 23:54:37,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:54:37,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 23:54:37,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:54:37,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 23:54:37,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:54:37,336 INFO L87 Difference]: Start difference. First operand 6669 states and 9170 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:54:40,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:54:40,138 INFO L93 Difference]: Finished difference Result 19629 states and 27006 transitions. [2022-07-20 23:54:40,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 23:54:40,142 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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 125 [2022-07-20 23:54:40,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:54:40,184 INFO L225 Difference]: With dead ends: 19629 [2022-07-20 23:54:40,184 INFO L226 Difference]: Without dead ends: 12962 [2022-07-20 23:54:40,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:54:40,198 INFO L413 NwaCegarLoop]: 1861 mSDtfsCounter, 920 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 2485 mSolverCounterSat, 807 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 920 SdHoareTripleChecker+Valid, 2001 SdHoareTripleChecker+Invalid, 3292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 807 IncrementalHoareTripleChecker+Valid, 2485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-20 23:54:40,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [920 Valid, 2001 Invalid, 3292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [807 Valid, 2485 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-20 23:54:40,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12962 states. [2022-07-20 23:54:40,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12962 to 12957. [2022-07-20 23:54:40,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12957 states, 12956 states have (on average 1.272537820314912) internal successors, (16487), 12956 states have internal predecessors, (16487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:54:40,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12957 states to 12957 states and 16487 transitions. [2022-07-20 23:54:40,372 INFO L78 Accepts]: Start accepts. Automaton has 12957 states and 16487 transitions. Word has length 125 [2022-07-20 23:54:40,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:54:40,373 INFO L495 AbstractCegarLoop]: Abstraction has 12957 states and 16487 transitions. [2022-07-20 23:54:40,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:54:40,374 INFO L276 IsEmpty]: Start isEmpty. Operand 12957 states and 16487 transitions. [2022-07-20 23:54:40,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-20 23:54:40,375 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:54:40,375 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 23:54:40,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-20 23:54:40,376 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:54:40,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:54:40,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1845724562, now seen corresponding path program 1 times [2022-07-20 23:54:40,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:54:40,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784463288] [2022-07-20 23:54:40,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:54:40,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:54:40,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:54:40,474 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 23:54:40,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:54:40,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784463288] [2022-07-20 23:54:40,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784463288] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:54:40,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 23:54:40,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-20 23:54:40,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536391847] [2022-07-20 23:54:40,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:54:40,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 23:54:40,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:54:40,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 23:54:40,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:54:40,477 INFO L87 Difference]: Start difference. First operand 12957 states and 16487 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:54:42,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:54:42,970 INFO L93 Difference]: Finished difference Result 22765 states and 29540 transitions. [2022-07-20 23:54:42,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 23:54:42,971 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 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 130 [2022-07-20 23:54:42,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:54:42,996 INFO L225 Difference]: With dead ends: 22765 [2022-07-20 23:54:42,996 INFO L226 Difference]: Without dead ends: 12179 [2022-07-20 23:54:43,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:54:43,007 INFO L413 NwaCegarLoop]: 1013 mSDtfsCounter, 728 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 2700 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 1192 SdHoareTripleChecker+Invalid, 2704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-20 23:54:43,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 1192 Invalid, 2704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2700 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-20 23:54:43,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12179 states. [2022-07-20 23:54:43,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12179 to 12170. [2022-07-20 23:54:43,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12170 states, 12169 states have (on average 1.2884378338400855) internal successors, (15679), 12169 states have internal predecessors, (15679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:54:43,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12170 states to 12170 states and 15679 transitions. [2022-07-20 23:54:43,126 INFO L78 Accepts]: Start accepts. Automaton has 12170 states and 15679 transitions. Word has length 130 [2022-07-20 23:54:43,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:54:43,127 INFO L495 AbstractCegarLoop]: Abstraction has 12170 states and 15679 transitions. [2022-07-20 23:54:43,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:54:43,130 INFO L276 IsEmpty]: Start isEmpty. Operand 12170 states and 15679 transitions. [2022-07-20 23:54:43,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-07-20 23:54:43,131 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:54:43,131 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 23:54:43,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-20 23:54:43,132 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:54:43,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:54:43,132 INFO L85 PathProgramCache]: Analyzing trace with hash -2024292359, now seen corresponding path program 1 times [2022-07-20 23:54:43,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:54:43,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206708242] [2022-07-20 23:54:43,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:54:43,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:54:43,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:54:43,273 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-20 23:54:43,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:54:43,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206708242] [2022-07-20 23:54:43,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206708242] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:54:43,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 23:54:43,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-20 23:54:43,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508619936] [2022-07-20 23:54:43,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:54:43,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 23:54:43,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:54:43,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 23:54:43,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:54:43,275 INFO L87 Difference]: Start difference. First operand 12170 states and 15679 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:54:46,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:54:46,125 INFO L93 Difference]: Finished difference Result 35376 states and 45656 transitions. [2022-07-20 23:54:46,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 23:54:46,130 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 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 154 [2022-07-20 23:54:46,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:54:46,162 INFO L225 Difference]: With dead ends: 35376 [2022-07-20 23:54:46,163 INFO L226 Difference]: Without dead ends: 23208 [2022-07-20 23:54:46,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:54:46,176 INFO L413 NwaCegarLoop]: 1090 mSDtfsCounter, 780 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 2534 mSolverCounterSat, 771 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 780 SdHoareTripleChecker+Valid, 1236 SdHoareTripleChecker+Invalid, 3305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 771 IncrementalHoareTripleChecker+Valid, 2534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-20 23:54:46,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [780 Valid, 1236 Invalid, 3305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [771 Valid, 2534 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-20 23:54:46,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23208 states. [2022-07-20 23:54:46,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23208 to 22404. [2022-07-20 23:54:46,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22404 states, 22403 states have (on average 1.1934115966611614) internal successors, (26736), 22403 states have internal predecessors, (26736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:54:46,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22404 states to 22404 states and 26736 transitions. [2022-07-20 23:54:46,397 INFO L78 Accepts]: Start accepts. Automaton has 22404 states and 26736 transitions. Word has length 154 [2022-07-20 23:54:46,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:54:46,397 INFO L495 AbstractCegarLoop]: Abstraction has 22404 states and 26736 transitions. [2022-07-20 23:54:46,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:54:46,398 INFO L276 IsEmpty]: Start isEmpty. Operand 22404 states and 26736 transitions. [2022-07-20 23:54:46,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2022-07-20 23:54:46,400 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:54:46,400 INFO L195 NwaCegarLoop]: trace histogram [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, 3, 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] [2022-07-20 23:54:46,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-20 23:54:46,400 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:54:46,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:54:46,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1157253765, now seen corresponding path program 1 times [2022-07-20 23:54:46,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:54:46,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765324527] [2022-07-20 23:54:46,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:54:46,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:54:46,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:54:46,494 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 149 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-07-20 23:54:46,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:54:46,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765324527] [2022-07-20 23:54:46,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765324527] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:54:46,494 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 23:54:46,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-20 23:54:46,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832863870] [2022-07-20 23:54:46,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:54:46,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 23:54:46,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:54:46,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 23:54:46,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:54:46,496 INFO L87 Difference]: Start difference. First operand 22404 states and 26736 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 2 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:54:48,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:54:48,821 INFO L93 Difference]: Finished difference Result 44019 states and 52673 transitions. [2022-07-20 23:54:48,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 23:54:48,821 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 2 states have internal predecessors, (166), 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 243 [2022-07-20 23:54:48,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:54:48,853 INFO L225 Difference]: With dead ends: 44019 [2022-07-20 23:54:48,853 INFO L226 Difference]: Without dead ends: 22404 [2022-07-20 23:54:48,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:54:48,871 INFO L413 NwaCegarLoop]: 1067 mSDtfsCounter, 700 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2504 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 1196 SdHoareTripleChecker+Invalid, 2508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-20 23:54:48,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [700 Valid, 1196 Invalid, 2508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2504 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-20 23:54:48,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22404 states. [2022-07-20 23:54:49,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22404 to 22404. [2022-07-20 23:54:49,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22404 states, 22403 states have (on average 1.1931884122662144) internal successors, (26731), 22403 states have internal predecessors, (26731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:54:49,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22404 states to 22404 states and 26731 transitions. [2022-07-20 23:54:49,163 INFO L78 Accepts]: Start accepts. Automaton has 22404 states and 26731 transitions. Word has length 243 [2022-07-20 23:54:49,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:54:49,164 INFO L495 AbstractCegarLoop]: Abstraction has 22404 states and 26731 transitions. [2022-07-20 23:54:49,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 2 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:54:49,164 INFO L276 IsEmpty]: Start isEmpty. Operand 22404 states and 26731 transitions. [2022-07-20 23:54:49,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2022-07-20 23:54:49,170 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:54:49,171 INFO L195 NwaCegarLoop]: trace histogram [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, 3, 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] [2022-07-20 23:54:49,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-20 23:54:49,173 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:54:49,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:54:49,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1131533274, now seen corresponding path program 1 times [2022-07-20 23:54:49,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:54:49,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738201450] [2022-07-20 23:54:49,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:54:49,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:54:49,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:54:49,256 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 228 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-20 23:54:49,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:54:49,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738201450] [2022-07-20 23:54:49,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738201450] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:54:49,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 23:54:49,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 23:54:49,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418523141] [2022-07-20 23:54:49,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:54:49,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 23:54:49,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:54:49,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 23:54:49,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:54:49,258 INFO L87 Difference]: Start difference. First operand 22404 states and 26731 transitions. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:54:52,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:54:52,033 INFO L93 Difference]: Finished difference Result 55046 states and 66948 transitions. [2022-07-20 23:54:52,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 23:54:52,033 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 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 250 [2022-07-20 23:54:52,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:54:52,076 INFO L225 Difference]: With dead ends: 55046 [2022-07-20 23:54:52,076 INFO L226 Difference]: Without dead ends: 33431 [2022-07-20 23:54:52,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:54:52,096 INFO L413 NwaCegarLoop]: 810 mSDtfsCounter, 882 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 2384 mSolverCounterSat, 903 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 882 SdHoareTripleChecker+Valid, 928 SdHoareTripleChecker+Invalid, 3287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 903 IncrementalHoareTripleChecker+Valid, 2384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-20 23:54:52,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [882 Valid, 928 Invalid, 3287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [903 Valid, 2384 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-20 23:54:52,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33431 states. [2022-07-20 23:54:52,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33431 to 32635. [2022-07-20 23:54:52,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32635 states, 32634 states have (on average 1.176135318992462) internal successors, (38382), 32634 states have internal predecessors, (38382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:54:52,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32635 states to 32635 states and 38382 transitions. [2022-07-20 23:54:52,410 INFO L78 Accepts]: Start accepts. Automaton has 32635 states and 38382 transitions. Word has length 250 [2022-07-20 23:54:52,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:54:52,410 INFO L495 AbstractCegarLoop]: Abstraction has 32635 states and 38382 transitions. [2022-07-20 23:54:52,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:54:52,411 INFO L276 IsEmpty]: Start isEmpty. Operand 32635 states and 38382 transitions. [2022-07-20 23:54:52,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2022-07-20 23:54:52,414 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:54:52,414 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 23:54:52,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-20 23:54:52,415 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:54:52,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:54:52,416 INFO L85 PathProgramCache]: Analyzing trace with hash -187004170, now seen corresponding path program 1 times [2022-07-20 23:54:52,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:54:52,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960368152] [2022-07-20 23:54:52,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:54:52,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:54:52,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:54:52,656 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-07-20 23:54:52,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:54:52,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960368152] [2022-07-20 23:54:52,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960368152] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:54:52,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 23:54:52,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 23:54:52,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594526873] [2022-07-20 23:54:52,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:54:52,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 23:54:52,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:54:52,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 23:54:52,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:54:52,659 INFO L87 Difference]: Start difference. First operand 32635 states and 38382 transitions. Second operand has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:54:55,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:54:55,739 INFO L93 Difference]: Finished difference Result 76294 states and 91193 transitions. [2022-07-20 23:54:55,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 23:54:55,741 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 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 305 [2022-07-20 23:54:55,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:54:55,793 INFO L225 Difference]: With dead ends: 76294 [2022-07-20 23:54:55,793 INFO L226 Difference]: Without dead ends: 44448 [2022-07-20 23:54:55,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:54:55,822 INFO L413 NwaCegarLoop]: 1806 mSDtfsCounter, 850 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 2550 mSolverCounterSat, 723 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 850 SdHoareTripleChecker+Valid, 1950 SdHoareTripleChecker+Invalid, 3273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 723 IncrementalHoareTripleChecker+Valid, 2550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-20 23:54:55,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [850 Valid, 1950 Invalid, 3273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [723 Valid, 2550 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-20 23:54:55,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44448 states. [2022-07-20 23:54:56,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44448 to 43657. [2022-07-20 23:54:56,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43657 states, 43656 states have (on average 1.151663001649258) internal successors, (50277), 43656 states have internal predecessors, (50277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:54:56,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43657 states to 43657 states and 50277 transitions. [2022-07-20 23:54:56,234 INFO L78 Accepts]: Start accepts. Automaton has 43657 states and 50277 transitions. Word has length 305 [2022-07-20 23:54:56,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:54:56,234 INFO L495 AbstractCegarLoop]: Abstraction has 43657 states and 50277 transitions. [2022-07-20 23:54:56,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:54:56,235 INFO L276 IsEmpty]: Start isEmpty. Operand 43657 states and 50277 transitions. [2022-07-20 23:54:56,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-07-20 23:54:56,238 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:54:56,238 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-20 23:54:56,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-20 23:54:56,239 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:54:56,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:54:56,239 INFO L85 PathProgramCache]: Analyzing trace with hash -773060605, now seen corresponding path program 1 times [2022-07-20 23:54:56,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:54:56,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509683189] [2022-07-20 23:54:56,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:54:56,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:54:56,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:54:56,456 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 152 proven. 113 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-20 23:54:56,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:54:56,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509683189] [2022-07-20 23:54:56,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509683189] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 23:54:56,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116171946] [2022-07-20 23:54:56,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:54:56,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 23:54:56,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 23:54:56,472 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-20 23:54:56,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-20 23:54:56,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:54:56,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 23:54:56,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 23:54:56,702 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-07-20 23:54:56,702 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 23:54:56,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [116171946] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:54:56,703 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-20 23:54:56,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-07-20 23:54:56,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499931478] [2022-07-20 23:54:56,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:54:56,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 23:54:56,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:54:56,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 23:54:56,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-07-20 23:54:56,705 INFO L87 Difference]: Start difference. First operand 43657 states and 50277 transitions. Second operand has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:54:59,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:54:59,421 INFO L93 Difference]: Finished difference Result 86516 states and 99752 transitions. [2022-07-20 23:54:59,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 23:54:59,421 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 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 320 [2022-07-20 23:54:59,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:54:59,466 INFO L225 Difference]: With dead ends: 86516 [2022-07-20 23:54:59,466 INFO L226 Difference]: Without dead ends: 43648 [2022-07-20 23:54:59,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 319 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-07-20 23:54:59,483 INFO L413 NwaCegarLoop]: 689 mSDtfsCounter, 1076 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2395 mSolverCounterSat, 527 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1076 SdHoareTripleChecker+Valid, 818 SdHoareTripleChecker+Invalid, 2922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 527 IncrementalHoareTripleChecker+Valid, 2395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-20 23:54:59,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1076 Valid, 818 Invalid, 2922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [527 Valid, 2395 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-20 23:54:59,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43648 states. [2022-07-20 23:54:59,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43648 to 43647. [2022-07-20 23:54:59,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43647 states, 43646 states have (on average 1.1132749851074555) internal successors, (48590), 43646 states have internal predecessors, (48590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:54:59,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43647 states to 43647 states and 48590 transitions. [2022-07-20 23:54:59,853 INFO L78 Accepts]: Start accepts. Automaton has 43647 states and 48590 transitions. Word has length 320 [2022-07-20 23:54:59,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:54:59,853 INFO L495 AbstractCegarLoop]: Abstraction has 43647 states and 48590 transitions. [2022-07-20 23:54:59,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:54:59,853 INFO L276 IsEmpty]: Start isEmpty. Operand 43647 states and 48590 transitions. [2022-07-20 23:54:59,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2022-07-20 23:54:59,858 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:54:59,858 INFO L195 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 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] [2022-07-20 23:54:59,877 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-20 23:55:00,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-20 23:55:00,075 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:55:00,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:55:00,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1427385796, now seen corresponding path program 1 times [2022-07-20 23:55:00,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:55:00,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074050531] [2022-07-20 23:55:00,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:55:00,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:55:00,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:55:00,194 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 433 trivial. 0 not checked. [2022-07-20 23:55:00,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:55:00,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074050531] [2022-07-20 23:55:00,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074050531] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:55:00,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 23:55:00,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 23:55:00,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646255430] [2022-07-20 23:55:00,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:55:00,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 23:55:00,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:55:00,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 23:55:00,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:55:00,197 INFO L87 Difference]: Start difference. First operand 43647 states and 48590 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:55:02,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:55:02,681 INFO L93 Difference]: Finished difference Result 86503 states and 96385 transitions. [2022-07-20 23:55:02,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 23:55:02,681 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 339 [2022-07-20 23:55:02,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:55:02,728 INFO L225 Difference]: With dead ends: 86503 [2022-07-20 23:55:02,729 INFO L226 Difference]: Without dead ends: 43645 [2022-07-20 23:55:02,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:55:02,756 INFO L413 NwaCegarLoop]: 1342 mSDtfsCounter, 1188 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 2463 mSolverCounterSat, 444 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1188 SdHoareTripleChecker+Valid, 1421 SdHoareTripleChecker+Invalid, 2907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 444 IncrementalHoareTripleChecker+Valid, 2463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-20 23:55:02,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1188 Valid, 1421 Invalid, 2907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [444 Valid, 2463 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-20 23:55:02,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43645 states. [2022-07-20 23:55:03,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43645 to 43644. [2022-07-20 23:55:03,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43644 states, 43643 states have (on average 1.086588914602571) internal successors, (47422), 43643 states have internal predecessors, (47422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:55:03,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43644 states to 43644 states and 47422 transitions. [2022-07-20 23:55:03,303 INFO L78 Accepts]: Start accepts. Automaton has 43644 states and 47422 transitions. Word has length 339 [2022-07-20 23:55:03,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:55:03,303 INFO L495 AbstractCegarLoop]: Abstraction has 43644 states and 47422 transitions. [2022-07-20 23:55:03,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:55:03,304 INFO L276 IsEmpty]: Start isEmpty. Operand 43644 states and 47422 transitions. [2022-07-20 23:55:03,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2022-07-20 23:55:03,319 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:55:03,319 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 23:55:03,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-20 23:55:03,320 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:55:03,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:55:03,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1320971521, now seen corresponding path program 1 times [2022-07-20 23:55:03,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:55:03,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103440348] [2022-07-20 23:55:03,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:55:03,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:55:03,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:55:03,417 INFO L134 CoverageAnalysis]: Checked inductivity of 503 backedges. 414 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-07-20 23:55:03,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:55:03,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103440348] [2022-07-20 23:55:03,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103440348] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:55:03,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 23:55:03,418 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 23:55:03,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217699832] [2022-07-20 23:55:03,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:55:03,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 23:55:03,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:55:03,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 23:55:03,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-20 23:55:03,419 INFO L87 Difference]: Start difference. First operand 43644 states and 47422 transitions. Second operand has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:55:09,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:55:09,336 INFO L93 Difference]: Finished difference Result 150458 states and 163809 transitions. [2022-07-20 23:55:09,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 23:55:09,337 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 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 362 [2022-07-20 23:55:09,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:55:09,454 INFO L225 Difference]: With dead ends: 150458 [2022-07-20 23:55:09,454 INFO L226 Difference]: Without dead ends: 107603 [2022-07-20 23:55:09,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-20 23:55:09,472 INFO L413 NwaCegarLoop]: 565 mSDtfsCounter, 1713 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 6004 mSolverCounterSat, 1096 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1713 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 7100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1096 IncrementalHoareTripleChecker+Valid, 6004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-07-20 23:55:09,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1713 Valid, 753 Invalid, 7100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1096 Valid, 6004 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-07-20 23:55:09,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107603 states. [2022-07-20 23:55:10,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107603 to 104326. [2022-07-20 23:55:10,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104326 states, 104325 states have (on average 1.0794344596213754) internal successors, (112612), 104325 states have internal predecessors, (112612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:55:10,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104326 states to 104326 states and 112612 transitions. [2022-07-20 23:55:10,566 INFO L78 Accepts]: Start accepts. Automaton has 104326 states and 112612 transitions. Word has length 362 [2022-07-20 23:55:10,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:55:10,566 INFO L495 AbstractCegarLoop]: Abstraction has 104326 states and 112612 transitions. [2022-07-20 23:55:10,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:55:10,567 INFO L276 IsEmpty]: Start isEmpty. Operand 104326 states and 112612 transitions. [2022-07-20 23:55:10,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2022-07-20 23:55:10,572 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:55:10,572 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 23:55:10,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-20 23:55:10,573 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:55:10,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:55:10,573 INFO L85 PathProgramCache]: Analyzing trace with hash 308905835, now seen corresponding path program 1 times [2022-07-20 23:55:10,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:55:10,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047777202] [2022-07-20 23:55:10,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:55:10,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:55:10,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:55:10,995 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 321 proven. 113 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-07-20 23:55:10,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:55:10,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047777202] [2022-07-20 23:55:10,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047777202] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 23:55:10,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443492888] [2022-07-20 23:55:10,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:55:10,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 23:55:10,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 23:55:11,008 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-20 23:55:11,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-20 23:55:11,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:55:11,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 585 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-20 23:55:11,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 23:55:11,641 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 321 proven. 0 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2022-07-20 23:55:11,641 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 23:55:11,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1443492888] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:55:11,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-20 23:55:11,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-20 23:55:11,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095366050] [2022-07-20 23:55:11,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:55:11,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 23:55:11,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:55:11,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 23:55:11,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-07-20 23:55:11,643 INFO L87 Difference]: Start difference. First operand 104326 states and 112612 transitions. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 2 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:55:14,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:55:14,398 INFO L93 Difference]: Finished difference Result 202358 states and 218743 transitions. [2022-07-20 23:55:14,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 23:55:14,398 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 2 states have internal predecessors, (218), 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 405 [2022-07-20 23:55:14,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:55:14,517 INFO L225 Difference]: With dead ends: 202358 [2022-07-20 23:55:14,517 INFO L226 Difference]: Without dead ends: 108272 [2022-07-20 23:55:14,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 404 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-07-20 23:55:14,555 INFO L413 NwaCegarLoop]: 1033 mSDtfsCounter, 683 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 2463 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 683 SdHoareTripleChecker+Valid, 1167 SdHoareTripleChecker+Invalid, 2575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 2463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-20 23:55:14,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [683 Valid, 1167 Invalid, 2575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 2463 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-20 23:55:14,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108272 states. [2022-07-20 23:55:15,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108272 to 106688. [2022-07-20 23:55:15,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106688 states, 106687 states have (on average 1.0717519472850487) internal successors, (114342), 106687 states have internal predecessors, (114342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:55:15,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106688 states to 106688 states and 114342 transitions. [2022-07-20 23:55:15,840 INFO L78 Accepts]: Start accepts. Automaton has 106688 states and 114342 transitions. Word has length 405 [2022-07-20 23:55:15,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:55:15,840 INFO L495 AbstractCegarLoop]: Abstraction has 106688 states and 114342 transitions. [2022-07-20 23:55:15,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 2 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:55:15,840 INFO L276 IsEmpty]: Start isEmpty. Operand 106688 states and 114342 transitions. [2022-07-20 23:55:15,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2022-07-20 23:55:15,846 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:55:15,846 INFO L195 NwaCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-07-20 23:55:15,865 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-20 23:55:16,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-20 23:55:16,051 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:55:16,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:55:16,052 INFO L85 PathProgramCache]: Analyzing trace with hash -397722901, now seen corresponding path program 1 times [2022-07-20 23:55:16,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:55:16,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705699758] [2022-07-20 23:55:16,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:55:16,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:55:16,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:55:16,160 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 664 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2022-07-20 23:55:16,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:55:16,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705699758] [2022-07-20 23:55:16,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705699758] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:55:16,161 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 23:55:16,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 23:55:16,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861648451] [2022-07-20 23:55:16,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:55:16,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 23:55:16,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:55:16,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 23:55:16,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:55:16,163 INFO L87 Difference]: Start difference. First operand 106688 states and 114342 transitions. Second operand has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:55:19,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:55:19,390 INFO L93 Difference]: Finished difference Result 214166 states and 229485 transitions. [2022-07-20 23:55:19,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 23:55:19,391 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 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 451 [2022-07-20 23:55:19,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:55:19,513 INFO L225 Difference]: With dead ends: 214166 [2022-07-20 23:55:19,513 INFO L226 Difference]: Without dead ends: 108267 [2022-07-20 23:55:19,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:55:19,568 INFO L413 NwaCegarLoop]: 1351 mSDtfsCounter, 938 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 2396 mSolverCounterSat, 583 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 938 SdHoareTripleChecker+Valid, 1436 SdHoareTripleChecker+Invalid, 2979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 583 IncrementalHoareTripleChecker+Valid, 2396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-20 23:55:19,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [938 Valid, 1436 Invalid, 2979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [583 Valid, 2396 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-20 23:55:19,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108267 states. [2022-07-20 23:55:20,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108267 to 106678. [2022-07-20 23:55:20,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106678 states, 106677 states have (on average 1.0612034459161768) internal successors, (113206), 106677 states have internal predecessors, (113206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:55:20,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106678 states to 106678 states and 113206 transitions. [2022-07-20 23:55:20,881 INFO L78 Accepts]: Start accepts. Automaton has 106678 states and 113206 transitions. Word has length 451 [2022-07-20 23:55:20,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:55:20,883 INFO L495 AbstractCegarLoop]: Abstraction has 106678 states and 113206 transitions. [2022-07-20 23:55:20,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:55:20,883 INFO L276 IsEmpty]: Start isEmpty. Operand 106678 states and 113206 transitions. [2022-07-20 23:55:20,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2022-07-20 23:55:20,889 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:55:20,889 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 23:55:20,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-20 23:55:20,890 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:55:20,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:55:20,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1185337965, now seen corresponding path program 1 times [2022-07-20 23:55:20,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:55:20,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359317600] [2022-07-20 23:55:20,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:55:20,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:55:20,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:55:21,022 INFO L134 CoverageAnalysis]: Checked inductivity of 808 backedges. 635 proven. 0 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2022-07-20 23:55:21,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:55:21,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359317600] [2022-07-20 23:55:21,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359317600] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:55:21,023 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 23:55:21,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 23:55:21,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016817178] [2022-07-20 23:55:21,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:55:21,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 23:55:21,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:55:21,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 23:55:21,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:55:21,024 INFO L87 Difference]: Start difference. First operand 106678 states and 113206 transitions. Second operand has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:55:24,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:55:24,204 INFO L93 Difference]: Finished difference Result 237756 states and 253279 transitions. [2022-07-20 23:55:24,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 23:55:24,205 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 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 475 [2022-07-20 23:55:24,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:55:24,357 INFO L225 Difference]: With dead ends: 237756 [2022-07-20 23:55:24,357 INFO L226 Difference]: Without dead ends: 131867 [2022-07-20 23:55:24,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:55:24,397 INFO L413 NwaCegarLoop]: 666 mSDtfsCounter, 876 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 2344 mSolverCounterSat, 739 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 876 SdHoareTripleChecker+Valid, 745 SdHoareTripleChecker+Invalid, 3083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 739 IncrementalHoareTripleChecker+Valid, 2344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-20 23:55:24,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [876 Valid, 745 Invalid, 3083 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [739 Valid, 2344 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-20 23:55:24,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131867 states. [2022-07-20 23:55:25,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131867 to 130274. [2022-07-20 23:55:25,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130274 states, 130273 states have (on average 1.059306226155842) internal successors, (137999), 130273 states have internal predecessors, (137999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:55:25,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130274 states to 130274 states and 137999 transitions. [2022-07-20 23:55:25,943 INFO L78 Accepts]: Start accepts. Automaton has 130274 states and 137999 transitions. Word has length 475 [2022-07-20 23:55:25,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:55:25,944 INFO L495 AbstractCegarLoop]: Abstraction has 130274 states and 137999 transitions. [2022-07-20 23:55:25,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:55:25,944 INFO L276 IsEmpty]: Start isEmpty. Operand 130274 states and 137999 transitions. [2022-07-20 23:55:25,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2022-07-20 23:55:25,951 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:55:25,952 INFO L195 NwaCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-07-20 23:55:25,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-20 23:55:25,952 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:55:25,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:55:25,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1649171128, now seen corresponding path program 1 times [2022-07-20 23:55:25,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:55:25,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877293457] [2022-07-20 23:55:25,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:55:25,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:55:26,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:55:26,093 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 306 proven. 0 refuted. 0 times theorem prover too weak. 535 trivial. 0 not checked. [2022-07-20 23:55:26,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:55:26,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877293457] [2022-07-20 23:55:26,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877293457] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:55:26,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 23:55:26,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-20 23:55:26,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905932939] [2022-07-20 23:55:26,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:55:26,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 23:55:26,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:55:26,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 23:55:26,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:55:26,096 INFO L87 Difference]: Start difference. First operand 130274 states and 137999 transitions. Second operand has 3 states, 3 states have (on average 72.0) internal successors, (216), 2 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:55:28,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:55:28,316 INFO L93 Difference]: Finished difference Result 245571 states and 260677 transitions. [2022-07-20 23:55:28,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 23:55:28,317 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 2 states have internal predecessors, (216), 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 492 [2022-07-20 23:55:28,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:55:28,469 INFO L225 Difference]: With dead ends: 245571 [2022-07-20 23:55:28,469 INFO L226 Difference]: Without dead ends: 129471 [2022-07-20 23:55:28,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:55:28,515 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 1610 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1463 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1610 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 1475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-20 23:55:28,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1610 Valid, 294 Invalid, 1475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1463 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-20 23:55:28,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129471 states. [2022-07-20 23:55:29,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129471 to 129470. [2022-07-20 23:55:29,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129470 states, 129469 states have (on average 1.0591261228556643) internal successors, (137124), 129469 states have internal predecessors, (137124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:55:29,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129470 states to 129470 states and 137124 transitions. [2022-07-20 23:55:29,938 INFO L78 Accepts]: Start accepts. Automaton has 129470 states and 137124 transitions. Word has length 492 [2022-07-20 23:55:29,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:55:29,939 INFO L495 AbstractCegarLoop]: Abstraction has 129470 states and 137124 transitions. [2022-07-20 23:55:29,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 2 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:55:29,939 INFO L276 IsEmpty]: Start isEmpty. Operand 129470 states and 137124 transitions. [2022-07-20 23:55:29,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2022-07-20 23:55:29,947 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:55:29,947 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-07-20 23:55:29,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-20 23:55:29,948 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:55:29,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:55:29,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1113896334, now seen corresponding path program 1 times [2022-07-20 23:55:29,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:55:29,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742800875] [2022-07-20 23:55:29,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:55:29,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:55:30,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:55:30,102 INFO L134 CoverageAnalysis]: Checked inductivity of 896 backedges. 612 proven. 0 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2022-07-20 23:55:30,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:55:30,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742800875] [2022-07-20 23:55:30,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742800875] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:55:30,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 23:55:30,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 23:55:30,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316506361] [2022-07-20 23:55:30,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:55:30,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 23:55:30,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:55:30,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 23:55:30,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:55:30,105 INFO L87 Difference]: Start difference. First operand 129470 states and 137124 transitions. Second operand has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:55:33,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:55:33,390 INFO L93 Difference]: Finished difference Result 258954 states and 274249 transitions. [2022-07-20 23:55:33,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 23:55:33,390 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 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 494 [2022-07-20 23:55:33,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:55:33,551 INFO L225 Difference]: With dead ends: 258954 [2022-07-20 23:55:33,551 INFO L226 Difference]: Without dead ends: 128699 [2022-07-20 23:55:33,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:55:33,602 INFO L413 NwaCegarLoop]: 1661 mSDtfsCounter, 791 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 2438 mSolverCounterSat, 404 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 791 SdHoareTripleChecker+Valid, 1800 SdHoareTripleChecker+Invalid, 2842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 404 IncrementalHoareTripleChecker+Valid, 2438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-20 23:55:33,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [791 Valid, 1800 Invalid, 2842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [404 Valid, 2438 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-20 23:55:33,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128699 states. [2022-07-20 23:55:34,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128699 to 127107. [2022-07-20 23:55:34,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127107 states, 127106 states have (on average 1.0460088430129184) internal successors, (132954), 127106 states have internal predecessors, (132954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:55:35,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127107 states to 127107 states and 132954 transitions. [2022-07-20 23:55:35,121 INFO L78 Accepts]: Start accepts. Automaton has 127107 states and 132954 transitions. Word has length 494 [2022-07-20 23:55:35,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:55:35,122 INFO L495 AbstractCegarLoop]: Abstraction has 127107 states and 132954 transitions. [2022-07-20 23:55:35,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:55:35,122 INFO L276 IsEmpty]: Start isEmpty. Operand 127107 states and 132954 transitions. [2022-07-20 23:55:35,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 504 [2022-07-20 23:55:35,129 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:55:35,129 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 23:55:35,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-20 23:55:35,130 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:55:35,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:55:35,130 INFO L85 PathProgramCache]: Analyzing trace with hash -711264652, now seen corresponding path program 1 times [2022-07-20 23:55:35,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:55:35,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302313013] [2022-07-20 23:55:35,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:55:35,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:55:35,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:55:35,289 INFO L134 CoverageAnalysis]: Checked inductivity of 816 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 757 trivial. 0 not checked. [2022-07-20 23:55:35,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:55:35,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302313013] [2022-07-20 23:55:35,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302313013] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:55:35,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 23:55:35,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 23:55:35,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185937111] [2022-07-20 23:55:35,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:55:35,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 23:55:35,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:55:35,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 23:55:35,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:55:35,292 INFO L87 Difference]: Start difference. First operand 127107 states and 132954 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) [2022-07-20 23:55:39,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:55:39,072 INFO L93 Difference]: Finished difference Result 321244 states and 336605 transitions. [2022-07-20 23:55:39,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 23:55:39,073 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 503 [2022-07-20 23:55:39,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:55:39,289 INFO L225 Difference]: With dead ends: 321244 [2022-07-20 23:55:39,289 INFO L226 Difference]: Without dead ends: 194926 [2022-07-20 23:55:39,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:55:39,362 INFO L413 NwaCegarLoop]: 697 mSDtfsCounter, 951 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 2895 mSolverCounterSat, 531 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 951 SdHoareTripleChecker+Valid, 802 SdHoareTripleChecker+Invalid, 3426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 531 IncrementalHoareTripleChecker+Valid, 2895 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-07-20 23:55:39,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [951 Valid, 802 Invalid, 3426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [531 Valid, 2895 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-07-20 23:55:39,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194926 states. [2022-07-20 23:55:41,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194926 to 191670. [2022-07-20 23:55:41,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191670 states, 191669 states have (on average 1.0450203214917384) internal successors, (200298), 191669 states have internal predecessors, (200298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:55:41,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191670 states to 191670 states and 200298 transitions. [2022-07-20 23:55:41,751 INFO L78 Accepts]: Start accepts. Automaton has 191670 states and 200298 transitions. Word has length 503 [2022-07-20 23:55:41,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:55:41,751 INFO L495 AbstractCegarLoop]: Abstraction has 191670 states and 200298 transitions. [2022-07-20 23:55:41,751 INFO L496 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) [2022-07-20 23:55:41,751 INFO L276 IsEmpty]: Start isEmpty. Operand 191670 states and 200298 transitions. [2022-07-20 23:55:41,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 566 [2022-07-20 23:55:41,762 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:55:41,763 INFO L195 NwaCegarLoop]: trace histogram [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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 23:55:41,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-20 23:55:41,763 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:55:41,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:55:41,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1749767836, now seen corresponding path program 1 times [2022-07-20 23:55:41,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:55:41,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318881283] [2022-07-20 23:55:41,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:55:41,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:55:41,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:55:41,907 INFO L134 CoverageAnalysis]: Checked inductivity of 1157 backedges. 834 proven. 0 refuted. 0 times theorem prover too weak. 323 trivial. 0 not checked. [2022-07-20 23:55:41,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:55:41,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318881283] [2022-07-20 23:55:41,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318881283] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:55:41,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 23:55:41,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 23:55:41,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307533999] [2022-07-20 23:55:41,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:55:41,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 23:55:41,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:55:41,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 23:55:41,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:55:41,910 INFO L87 Difference]: Start difference. First operand 191670 states and 200298 transitions. Second operand has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:55:46,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:55:46,197 INFO L93 Difference]: Finished difference Result 434528 states and 455277 transitions. [2022-07-20 23:55:46,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 23:55:46,197 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 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 565 [2022-07-20 23:55:46,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:55:46,546 INFO L225 Difference]: With dead ends: 434528 [2022-07-20 23:55:46,546 INFO L226 Difference]: Without dead ends: 258604 [2022-07-20 23:55:46,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 23:55:46,633 INFO L413 NwaCegarLoop]: 491 mSDtfsCounter, 1018 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 2397 mSolverCounterSat, 898 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1018 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 3295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 898 IncrementalHoareTripleChecker+Valid, 2397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-20 23:55:46,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1018 Valid, 568 Invalid, 3295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [898 Valid, 2397 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-20 23:55:46,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258604 states. [2022-07-20 23:55:49,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258604 to 258597. [2022-07-20 23:55:49,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258597 states, 258596 states have (on average 1.0423208402295472) internal successors, (269540), 258596 states have internal predecessors, (269540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:55:49,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258597 states to 258597 states and 269540 transitions. [2022-07-20 23:55:49,892 INFO L78 Accepts]: Start accepts. Automaton has 258597 states and 269540 transitions. Word has length 565 [2022-07-20 23:55:49,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 23:55:49,892 INFO L495 AbstractCegarLoop]: Abstraction has 258597 states and 269540 transitions. [2022-07-20 23:55:49,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:55:49,892 INFO L276 IsEmpty]: Start isEmpty. Operand 258597 states and 269540 transitions. [2022-07-20 23:55:49,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 688 [2022-07-20 23:55:49,911 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 23:55:49,911 INFO L195 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 23:55:49,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-20 23:55:49,912 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 23:55:49,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 23:55:49,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1999906746, now seen corresponding path program 1 times [2022-07-20 23:55:49,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 23:55:49,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922550635] [2022-07-20 23:55:49,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:55:49,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 23:55:49,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:55:50,130 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 589 proven. 75 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-07-20 23:55:50,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 23:55:50,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922550635] [2022-07-20 23:55:50,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922550635] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 23:55:50,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771239251] [2022-07-20 23:55:50,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 23:55:50,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 23:55:50,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 23:55:50,132 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-20 23:55:50,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-20 23:55:50,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 23:55:50,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 899 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-20 23:55:50,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 23:55:51,617 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 727 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-07-20 23:55:51,617 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 23:55:51,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [771239251] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 23:55:51,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-20 23:55:51,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2022-07-20 23:55:51,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88078520] [2022-07-20 23:55:51,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 23:55:51,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 23:55:51,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 23:55:51,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 23:55:51,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-20 23:55:51,619 INFO L87 Difference]: Start difference. First operand 258597 states and 269540 transitions. Second operand has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 23:55:55,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 23:55:55,583 INFO L93 Difference]: Finished difference Result 503029 states and 524783 transitions. [2022-07-20 23:55:55,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 23:55:55,584 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 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 687 [2022-07-20 23:55:55,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 23:55:55,871 INFO L225 Difference]: With dead ends: 503029 [2022-07-20 23:55:55,871 INFO L226 Difference]: Without dead ends: 260178