./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-commit-tester/m0_drivers-usb-gadget-g_printer-ko--106_1a--2b9ec6c-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fcb8e130 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/ldv-commit-tester/m0_drivers-usb-gadget-g_printer-ko--106_1a--2b9ec6c-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-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 64bit --witnessprinter.graph.data.programhash cb8f0ebb3c2471fcffc912ab6e7b9ec5c4e0cbee8604050053df01c587aed5a7 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-fcb8e13 [2021-11-22 21:47:19,542 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 21:47:19,544 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 21:47:19,567 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 21:47:19,568 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 21:47:19,571 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 21:47:19,573 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 21:47:19,577 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 21:47:19,579 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 21:47:19,582 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 21:47:19,583 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 21:47:19,584 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 21:47:19,584 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 21:47:19,586 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 21:47:19,587 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 21:47:19,589 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 21:47:19,590 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 21:47:19,590 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 21:47:19,593 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 21:47:19,598 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 21:47:19,599 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 21:47:19,600 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 21:47:19,601 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 21:47:19,601 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 21:47:19,605 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 21:47:19,605 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 21:47:19,605 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 21:47:19,606 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 21:47:19,607 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 21:47:19,607 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 21:47:19,608 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 21:47:19,609 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 21:47:19,610 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 21:47:19,611 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 21:47:19,612 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 21:47:19,612 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 21:47:19,613 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 21:47:19,613 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 21:47:19,613 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 21:47:19,613 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 21:47:19,614 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 21:47:19,615 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-22 21:47:19,652 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 21:47:19,652 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 21:47:19,652 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 21:47:19,653 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 21:47:19,654 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 21:47:19,654 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 21:47:19,654 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 21:47:19,654 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 21:47:19,654 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 21:47:19,654 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 21:47:19,655 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 21:47:19,655 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 21:47:19,655 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 21:47:19,655 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 21:47:19,656 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 21:47:19,656 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 21:47:19,656 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 21:47:19,656 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 21:47:19,656 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 21:47:19,656 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 21:47:19,657 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 21:47:19,657 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 21:47:19,657 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 21:47:19,657 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 21:47:19,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 21:47:19,657 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 21:47:19,657 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 21:47:19,658 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 21:47:19,658 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 21:47:19,658 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb8f0ebb3c2471fcffc912ab6e7b9ec5c4e0cbee8604050053df01c587aed5a7 [2021-11-22 21:47:19,880 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 21:47:19,899 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 21:47:19,901 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 21:47:19,902 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 21:47:19,903 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 21:47:19,904 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-commit-tester/m0_drivers-usb-gadget-g_printer-ko--106_1a--2b9ec6c-1.i [2021-11-22 21:47:19,958 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a37575fb1/e99eaf87290c48e4af9808b3ca458866/FLAGedfa18f7b [2021-11-22 21:47:20,480 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 21:47:20,480 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-commit-tester/m0_drivers-usb-gadget-g_printer-ko--106_1a--2b9ec6c-1.i [2021-11-22 21:47:20,510 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a37575fb1/e99eaf87290c48e4af9808b3ca458866/FLAGedfa18f7b [2021-11-22 21:47:20,712 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a37575fb1/e99eaf87290c48e4af9808b3ca458866 [2021-11-22 21:47:20,714 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 21:47:20,715 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 21:47:20,716 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 21:47:20,716 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 21:47:20,718 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 21:47:20,719 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:47:20" (1/1) ... [2021-11-22 21:47:20,720 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@691fa6f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:47:20, skipping insertion in model container [2021-11-22 21:47:20,720 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:47:20" (1/1) ... [2021-11-22 21:47:20,724 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 21:47:20,790 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 21:47:21,520 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/ldv-commit-tester/m0_drivers-usb-gadget-g_printer-ko--106_1a--2b9ec6c-1.i[158757,158770] [2021-11-22 21:47:21,538 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 21:47:21,565 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 21:47:21,783 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/ldv-commit-tester/m0_drivers-usb-gadget-g_printer-ko--106_1a--2b9ec6c-1.i[158757,158770] [2021-11-22 21:47:21,788 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 21:47:21,842 INFO L208 MainTranslator]: Completed translation [2021-11-22 21:47:21,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:47:21 WrapperNode [2021-11-22 21:47:21,843 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 21:47:21,845 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 21:47:21,845 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 21:47:21,846 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 21:47:21,851 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:47:21" (1/1) ... [2021-11-22 21:47:21,911 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:47:21" (1/1) ... [2021-11-22 21:47:22,969 INFO L137 Inliner]: procedures = 191, calls = 1267, calls flagged for inlining = 397, calls inlined = 6717, statements flattened = 66015 [2021-11-22 21:47:22,969 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 21:47:22,970 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 21:47:22,971 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 21:47:22,971 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 21:47:22,977 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:47:21" (1/1) ... [2021-11-22 21:47:22,977 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:47:21" (1/1) ... [2021-11-22 21:47:23,275 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:47:21" (1/1) ... [2021-11-22 21:47:23,276 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:47:21" (1/1) ... [2021-11-22 21:47:24,237 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:47:21" (1/1) ... [2021-11-22 21:47:24,374 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:47:21" (1/1) ... [2021-11-22 21:47:24,456 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:47:21" (1/1) ... [2021-11-22 21:47:24,721 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 21:47:24,723 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 21:47:24,723 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 21:47:24,723 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 21:47:24,724 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:47:21" (1/1) ... [2021-11-22 21:47:24,729 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 21:47:24,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 21:47:24,748 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 21:47:24,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 21:47:24,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-22 21:47:24,912 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-22 21:47:24,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-22 21:47:24,913 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-22 21:47:24,913 INFO L130 BoogieDeclarations]: Found specification of procedure printer_soft_reset [2021-11-22 21:47:24,913 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_soft_reset [2021-11-22 21:47:24,913 INFO L130 BoogieDeclarations]: Found specification of procedure set_printer_interface [2021-11-22 21:47:24,913 INFO L138 BoogieDeclarations]: Found implementation of procedure set_printer_interface [2021-11-22 21:47:24,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-22 21:47:24,914 INFO L130 BoogieDeclarations]: Found specification of procedure set_interface [2021-11-22 21:47:24,914 INFO L138 BoogieDeclarations]: Found implementation of procedure set_interface [2021-11-22 21:47:24,914 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-22 21:47:24,914 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-22 21:47:24,914 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_alloc_notrace [2021-11-22 21:47:24,914 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 21:47:24,914 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-22 21:47:24,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-22 21:47:24,915 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-22 21:47:24,915 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_enable [2021-11-22 21:47:24,915 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_enable [2021-11-22 21:47:24,915 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-22 21:47:24,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-22 21:47:24,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-22 21:47:24,915 INFO L130 BoogieDeclarations]: Found specification of procedure printer_setup [2021-11-22 21:47:24,915 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_setup [2021-11-22 21:47:24,915 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-22 21:47:24,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-22 21:47:24,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 21:47:24,916 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-22 21:47:24,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 21:47:24,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 21:47:25,675 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 21:47:25,677 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 21:47:59,876 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 21:47:59,919 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 21:47:59,919 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-22 21:47:59,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:47:59 BoogieIcfgContainer [2021-11-22 21:47:59,931 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 21:47:59,933 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 21:47:59,933 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 21:47:59,936 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 21:47:59,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 09:47:20" (1/3) ... [2021-11-22 21:47:59,936 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b47f043 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:47:59, skipping insertion in model container [2021-11-22 21:47:59,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:47:21" (2/3) ... [2021-11-22 21:47:59,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b47f043 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:47:59, skipping insertion in model container [2021-11-22 21:47:59,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:47:59" (3/3) ... [2021-11-22 21:47:59,939 INFO L111 eAbstractionObserver]: Analyzing ICFG m0_drivers-usb-gadget-g_printer-ko--106_1a--2b9ec6c-1.i [2021-11-22 21:47:59,942 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 21:47:59,943 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2021-11-22 21:48:00,018 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 21:48:00,029 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-22 21:48:00,030 INFO L340 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2021-11-22 21:48:00,186 INFO L276 IsEmpty]: Start isEmpty. Operand has 13544 states, 13508 states have (on average 1.3542345276872965) internal successors, (18293), 13527 states have internal predecessors, (18293), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-22 21:48:00,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-22 21:48:00,189 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 21:48:00,189 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 21:48:00,190 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-22 21:48:00,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 21:48:00,194 INFO L85 PathProgramCache]: Analyzing trace with hash 228087672, now seen corresponding path program 1 times [2021-11-22 21:48:00,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 21:48:00,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81926388] [2021-11-22 21:48:00,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 21:48:00,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 21:48:00,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 21:48:00,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 21:48:00,696 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 21:48:00,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81926388] [2021-11-22 21:48:00,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81926388] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 21:48:00,697 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 21:48:00,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 21:48:00,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445168297] [2021-11-22 21:48:00,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 21:48:00,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 21:48:00,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 21:48:00,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 21:48:00,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 21:48:00,748 INFO L87 Difference]: Start difference. First operand has 13544 states, 13508 states have (on average 1.3542345276872965) internal successors, (18293), 13527 states have internal predecessors, (18293), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 21:48:01,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 21:48:01,449 INFO L93 Difference]: Finished difference Result 36039 states and 47833 transitions. [2021-11-22 21:48:01,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 21:48:01,451 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2021-11-22 21:48:01,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 21:48:01,784 INFO L225 Difference]: With dead ends: 36039 [2021-11-22 21:48:01,784 INFO L226 Difference]: Without dead ends: 22495 [2021-11-22 21:48:01,830 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 21:48:01,835 INFO L933 BasicCegarLoop]: 14715 mSDtfsCounter, 14701 mSDsluCounter, 14607 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14701 SdHoareTripleChecker+Valid, 29322 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 21:48:01,839 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14701 Valid, 29322 Invalid, 27 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 21:48:01,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22495 states. [2021-11-22 21:48:02,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22495 to 22489. [2021-11-22 21:48:02,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22489 states, 22445 states have (on average 1.3040766317665404) internal successors, (29270), 22456 states have internal predecessors, (29270), 20 states have call successors, (20), 12 states have call predecessors, (20), 12 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-22 21:48:02,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22489 states to 22489 states and 29310 transitions. [2021-11-22 21:48:02,502 INFO L78 Accepts]: Start accepts. Automaton has 22489 states and 29310 transitions. Word has length 9 [2021-11-22 21:48:02,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 21:48:02,503 INFO L470 AbstractCegarLoop]: Abstraction has 22489 states and 29310 transitions. [2021-11-22 21:48:02,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 21:48:02,504 INFO L276 IsEmpty]: Start isEmpty. Operand 22489 states and 29310 transitions. [2021-11-22 21:48:02,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-22 21:48:02,505 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 21:48:02,505 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 21:48:02,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 21:48:02,506 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-22 21:48:02,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 21:48:02,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1519196340, now seen corresponding path program 1 times [2021-11-22 21:48:02,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 21:48:02,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160197282] [2021-11-22 21:48:02,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 21:48:02,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 21:48:02,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 21:48:02,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 21:48:02,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 21:48:02,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160197282] [2021-11-22 21:48:02,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160197282] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 21:48:02,721 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 21:48:02,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 21:48:02,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949853073] [2021-11-22 21:48:02,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 21:48:02,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 21:48:02,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 21:48:02,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 21:48:02,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 21:48:02,723 INFO L87 Difference]: Start difference. First operand 22489 states and 29310 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 21:48:03,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 21:48:03,387 INFO L93 Difference]: Finished difference Result 56149 states and 73195 transitions. [2021-11-22 21:48:03,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 21:48:03,388 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2021-11-22 21:48:03,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 21:48:03,570 INFO L225 Difference]: With dead ends: 56149 [2021-11-22 21:48:03,570 INFO L226 Difference]: Without dead ends: 44933 [2021-11-22 21:48:03,614 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 21:48:03,615 INFO L933 BasicCegarLoop]: 14710 mSDtfsCounter, 14688 mSDsluCounter, 14658 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14688 SdHoareTripleChecker+Valid, 29368 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 21:48:03,623 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14688 Valid, 29368 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 21:48:03,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44933 states. [2021-11-22 21:48:04,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44933 to 33736. [2021-11-22 21:48:04,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33736 states, 33677 states have (on average 1.3040057012204176) internal successors, (43915), 33687 states have internal predecessors, (43915), 30 states have call successors, (30), 18 states have call predecessors, (30), 18 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-22 21:48:04,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33736 states to 33736 states and 43975 transitions. [2021-11-22 21:48:04,575 INFO L78 Accepts]: Start accepts. Automaton has 33736 states and 43975 transitions. Word has length 10 [2021-11-22 21:48:04,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 21:48:04,575 INFO L470 AbstractCegarLoop]: Abstraction has 33736 states and 43975 transitions. [2021-11-22 21:48:04,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 21:48:04,576 INFO L276 IsEmpty]: Start isEmpty. Operand 33736 states and 43975 transitions. [2021-11-22 21:48:04,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-22 21:48:04,577 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 21:48:04,577 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 21:48:04,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 21:48:04,577 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-22 21:48:04,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 21:48:04,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1355845592, now seen corresponding path program 1 times [2021-11-22 21:48:04,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 21:48:04,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056147010] [2021-11-22 21:48:04,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 21:48:04,578 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 21:48:04,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 21:48:04,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 21:48:04,765 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 21:48:04,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056147010] [2021-11-22 21:48:04,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056147010] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 21:48:04,766 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 21:48:04,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 21:48:04,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390980419] [2021-11-22 21:48:04,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 21:48:04,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 21:48:04,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 21:48:04,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 21:48:04,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 21:48:04,768 INFO L87 Difference]: Start difference. First operand 33736 states and 43975 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 21:48:05,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 21:48:05,797 INFO L93 Difference]: Finished difference Result 78615 states and 102492 transitions. [2021-11-22 21:48:05,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 21:48:05,797 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2021-11-22 21:48:05,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 21:48:06,031 INFO L225 Difference]: With dead ends: 78615 [2021-11-22 21:48:06,032 INFO L226 Difference]: Without dead ends: 67390 [2021-11-22 21:48:06,092 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 21:48:06,095 INFO L933 BasicCegarLoop]: 14709 mSDtfsCounter, 14678 mSDsluCounter, 14647 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14678 SdHoareTripleChecker+Valid, 29356 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 21:48:06,096 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14678 Valid, 29356 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 21:48:06,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67390 states. [2021-11-22 21:48:07,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67390 to 33797. [2021-11-22 21:48:07,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33797 states, 33739 states have (on average 1.303773081596965) internal successors, (43988), 33748 states have internal predecessors, (43988), 30 states have call successors, (30), 18 states have call predecessors, (30), 18 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-22 21:48:07,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33797 states to 33797 states and 44048 transitions. [2021-11-22 21:48:07,173 INFO L78 Accepts]: Start accepts. Automaton has 33797 states and 44048 transitions. Word has length 20 [2021-11-22 21:48:07,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 21:48:07,174 INFO L470 AbstractCegarLoop]: Abstraction has 33797 states and 44048 transitions. [2021-11-22 21:48:07,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 21:48:07,174 INFO L276 IsEmpty]: Start isEmpty. Operand 33797 states and 44048 transitions. [2021-11-22 21:48:07,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-22 21:48:07,175 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 21:48:07,175 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 21:48:07,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-22 21:48:07,176 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-22 21:48:07,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 21:48:07,176 INFO L85 PathProgramCache]: Analyzing trace with hash 398645692, now seen corresponding path program 1 times [2021-11-22 21:48:07,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 21:48:07,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705056690] [2021-11-22 21:48:07,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 21:48:07,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 21:48:07,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 21:48:07,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 21:48:07,708 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 21:48:07,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705056690] [2021-11-22 21:48:07,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705056690] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 21:48:07,709 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 21:48:07,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-22 21:48:07,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932948995] [2021-11-22 21:48:07,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 21:48:07,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-22 21:48:07,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 21:48:07,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-22 21:48:07,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-22 21:48:07,710 INFO L87 Difference]: Start difference. First operand 33797 states and 44048 transitions. Second operand has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 21:48:11,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 21:48:11,214 INFO L93 Difference]: Finished difference Result 112186 states and 145711 transitions. [2021-11-22 21:48:11,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-22 21:48:11,215 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2021-11-22 21:48:11,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 21:48:11,412 INFO L225 Difference]: With dead ends: 112186 [2021-11-22 21:48:11,413 INFO L226 Difference]: Without dead ends: 78508 [2021-11-22 21:48:11,481 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=107, Invalid=235, Unknown=0, NotChecked=0, Total=342 [2021-11-22 21:48:11,484 INFO L933 BasicCegarLoop]: 19389 mSDtfsCounter, 46288 mSDsluCounter, 121522 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46290 SdHoareTripleChecker+Valid, 140911 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-22 21:48:11,485 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46290 Valid, 140911 Invalid, 411 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [40 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-22 21:48:11,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78508 states. [2021-11-22 21:48:12,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78508 to 33807. [2021-11-22 21:48:12,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33807 states, 33749 states have (on average 1.3036830720910249) internal successors, (43998), 33758 states have internal predecessors, (43998), 30 states have call successors, (30), 18 states have call predecessors, (30), 18 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-22 21:48:12,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33807 states to 33807 states and 44058 transitions. [2021-11-22 21:48:12,744 INFO L78 Accepts]: Start accepts. Automaton has 33807 states and 44058 transitions. Word has length 22 [2021-11-22 21:48:12,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 21:48:12,745 INFO L470 AbstractCegarLoop]: Abstraction has 33807 states and 44058 transitions. [2021-11-22 21:48:12,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 21:48:12,745 INFO L276 IsEmpty]: Start isEmpty. Operand 33807 states and 44058 transitions. [2021-11-22 21:48:12,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-22 21:48:12,746 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 21:48:12,746 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 21:48:12,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-22 21:48:12,746 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-22 21:48:12,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 21:48:12,747 INFO L85 PathProgramCache]: Analyzing trace with hash -681770746, now seen corresponding path program 1 times [2021-11-22 21:48:12,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 21:48:12,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169565526] [2021-11-22 21:48:12,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 21:48:12,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 21:48:13,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 21:48:13,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 21:48:13,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 21:48:13,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169565526] [2021-11-22 21:48:13,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169565526] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 21:48:13,802 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 21:48:13,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-22 21:48:13,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607142503] [2021-11-22 21:48:13,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 21:48:13,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-22 21:48:13,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 21:48:13,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-22 21:48:13,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-11-22 21:48:13,803 INFO L87 Difference]: Start difference. First operand 33807 states and 44058 transitions. Second operand has 10 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 21:48:19,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 21:48:19,666 INFO L93 Difference]: Finished difference Result 90810 states and 117815 transitions. [2021-11-22 21:48:19,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-22 21:48:19,666 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2021-11-22 21:48:19,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 21:48:19,881 INFO L225 Difference]: With dead ends: 90810 [2021-11-22 21:48:19,881 INFO L226 Difference]: Without dead ends: 79617 [2021-11-22 21:48:19,931 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=356, Invalid=976, Unknown=0, NotChecked=0, Total=1332 [2021-11-22 21:48:19,932 INFO L933 BasicCegarLoop]: 27210 mSDtfsCounter, 45180 mSDsluCounter, 163803 mSDsCounter, 0 mSdLazyCounter, 795 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45180 SdHoareTripleChecker+Valid, 191013 SdHoareTripleChecker+Invalid, 884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-22 21:48:19,933 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45180 Valid, 191013 Invalid, 884 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [89 Valid, 795 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-22 21:48:20,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79617 states. [2021-11-22 21:48:21,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79617 to 33797. [2021-11-22 21:48:21,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33797 states, 33739 states have (on average 1.3037434423071224) internal successors, (43987), 33748 states have internal predecessors, (43987), 30 states have call successors, (30), 18 states have call predecessors, (30), 18 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-22 21:48:21,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33797 states to 33797 states and 44047 transitions. [2021-11-22 21:48:21,375 INFO L78 Accepts]: Start accepts. Automaton has 33797 states and 44047 transitions. Word has length 25 [2021-11-22 21:48:21,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 21:48:21,376 INFO L470 AbstractCegarLoop]: Abstraction has 33797 states and 44047 transitions. [2021-11-22 21:48:21,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 21:48:21,376 INFO L276 IsEmpty]: Start isEmpty. Operand 33797 states and 44047 transitions. [2021-11-22 21:48:21,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-22 21:48:21,377 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 21:48:21,377 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 21:48:21,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-22 21:48:21,377 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-22 21:48:21,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 21:48:21,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1778018154, now seen corresponding path program 1 times [2021-11-22 21:48:21,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 21:48:21,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611461471] [2021-11-22 21:48:21,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 21:48:21,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 21:48:21,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 21:48:21,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 21:48:21,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 21:48:21,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611461471] [2021-11-22 21:48:21,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611461471] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 21:48:21,992 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 21:48:21,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-22 21:48:21,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468205887] [2021-11-22 21:48:21,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 21:48:21,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-22 21:48:21,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 21:48:21,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-22 21:48:21,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2021-11-22 21:48:21,993 INFO L87 Difference]: Start difference. First operand 33797 states and 44047 transitions. Second operand has 12 states, 12 states have (on average 2.25) internal successors, (27), 12 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 21:48:24,023 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 21:48:30,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 21:48:30,852 INFO L93 Difference]: Finished difference Result 99276 states and 129262 transitions. [2021-11-22 21:48:30,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-22 21:48:30,853 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.25) internal successors, (27), 12 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2021-11-22 21:48:30,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 21:48:31,076 INFO L225 Difference]: With dead ends: 99276 [2021-11-22 21:48:31,076 INFO L226 Difference]: Without dead ends: 88087 [2021-11-22 21:48:31,123 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=234, Invalid=578, Unknown=0, NotChecked=0, Total=812 [2021-11-22 21:48:31,126 INFO L933 BasicCegarLoop]: 37202 mSDtfsCounter, 40424 mSDsluCounter, 275794 mSDsCounter, 0 mSdLazyCounter, 945 mSolverCounterSat, 60 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40424 SdHoareTripleChecker+Valid, 312996 SdHoareTripleChecker+Invalid, 1006 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 945 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2021-11-22 21:48:31,126 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40424 Valid, 312996 Invalid, 1006 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [60 Valid, 945 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2021-11-22 21:48:31,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88087 states. [2021-11-22 21:48:32,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88087 to 33795. [2021-11-22 21:48:32,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33795 states, 33737 states have (on average 1.3037318078074518) internal successors, (43984), 33746 states have internal predecessors, (43984), 30 states have call successors, (30), 18 states have call predecessors, (30), 18 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-22 21:48:32,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33795 states to 33795 states and 44044 transitions. [2021-11-22 21:48:32,854 INFO L78 Accepts]: Start accepts. Automaton has 33795 states and 44044 transitions. Word has length 27 [2021-11-22 21:48:32,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 21:48:32,854 INFO L470 AbstractCegarLoop]: Abstraction has 33795 states and 44044 transitions. [2021-11-22 21:48:32,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.25) internal successors, (27), 12 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 21:48:32,854 INFO L276 IsEmpty]: Start isEmpty. Operand 33795 states and 44044 transitions. [2021-11-22 21:48:32,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-22 21:48:32,855 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 21:48:32,855 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 21:48:32,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-22 21:48:32,855 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-22 21:48:32,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 21:48:32,855 INFO L85 PathProgramCache]: Analyzing trace with hash -387403644, now seen corresponding path program 1 times [2021-11-22 21:48:32,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 21:48:32,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809061294] [2021-11-22 21:48:32,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 21:48:32,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 21:48:32,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 21:48:33,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 21:48:33,024 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 21:48:33,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809061294] [2021-11-22 21:48:33,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809061294] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 21:48:33,025 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 21:48:33,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 21:48:33,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337770428] [2021-11-22 21:48:33,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 21:48:33,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 21:48:33,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 21:48:33,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 21:48:33,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 21:48:33,026 INFO L87 Difference]: Start difference. First operand 33795 states and 44044 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 21:48:35,052 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 21:48:37,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 21:48:37,424 INFO L93 Difference]: Finished difference Result 67386 states and 87848 transitions. [2021-11-22 21:48:37,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 21:48:37,425 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2021-11-22 21:48:37,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 21:48:37,712 INFO L225 Difference]: With dead ends: 67386 [2021-11-22 21:48:37,712 INFO L226 Difference]: Without dead ends: 67366 [2021-11-22 21:48:37,735 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 21:48:37,735 INFO L933 BasicCegarLoop]: 29284 mSDtfsCounter, 14637 mSDsluCounter, 14681 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14637 SdHoareTripleChecker+Valid, 43965 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-22 21:48:37,736 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14637 Valid, 43965 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2021-11-22 21:48:37,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67366 states. [2021-11-22 21:48:39,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67366 to 33783. [2021-11-22 21:48:39,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33783 states, 33725 states have (on average 1.3035730170496664) internal successors, (43963), 33734 states have internal predecessors, (43963), 30 states have call successors, (30), 18 states have call predecessors, (30), 18 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-22 21:48:39,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33783 states to 33783 states and 44023 transitions. [2021-11-22 21:48:39,596 INFO L78 Accepts]: Start accepts. Automaton has 33783 states and 44023 transitions. Word has length 28 [2021-11-22 21:48:39,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 21:48:39,596 INFO L470 AbstractCegarLoop]: Abstraction has 33783 states and 44023 transitions. [2021-11-22 21:48:39,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 21:48:39,597 INFO L276 IsEmpty]: Start isEmpty. Operand 33783 states and 44023 transitions. [2021-11-22 21:48:39,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-22 21:48:39,597 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 21:48:39,597 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 21:48:39,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-22 21:48:39,598 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-22 21:48:39,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 21:48:39,598 INFO L85 PathProgramCache]: Analyzing trace with hash -442607690, now seen corresponding path program 1 times [2021-11-22 21:48:39,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 21:48:39,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360003347] [2021-11-22 21:48:39,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 21:48:39,599 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 21:48:39,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 21:48:40,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 21:48:40,062 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 21:48:40,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360003347] [2021-11-22 21:48:40,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360003347] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 21:48:40,062 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 21:48:40,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-22 21:48:40,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729259056] [2021-11-22 21:48:40,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 21:48:40,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-22 21:48:40,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 21:48:40,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-22 21:48:40,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-11-22 21:48:40,063 INFO L87 Difference]: Start difference. First operand 33783 states and 44023 transitions. Second operand has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 21:48:43,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 21:48:43,651 INFO L93 Difference]: Finished difference Result 63134 states and 82226 transitions. [2021-11-22 21:48:43,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-22 21:48:43,652 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2021-11-22 21:48:43,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 21:48:43,733 INFO L225 Difference]: With dead ends: 63134 [2021-11-22 21:48:43,733 INFO L226 Difference]: Without dead ends: 29466 [2021-11-22 21:48:43,783 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2021-11-22 21:48:43,783 INFO L933 BasicCegarLoop]: 19140 mSDtfsCounter, 13637 mSDsluCounter, 120354 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13637 SdHoareTripleChecker+Valid, 139494 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-22 21:48:43,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13637 Valid, 139494 Invalid, 508 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [48 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-22 21:48:43,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29466 states. [2021-11-22 21:48:45,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29466 to 22503. [2021-11-22 21:48:45,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22503 states, 22465 states have (on average 1.3035833518807034) internal successors, (29285), 22470 states have internal predecessors, (29285), 20 states have call successors, (20), 12 states have call predecessors, (20), 12 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-22 21:48:45,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22503 states to 22503 states and 29325 transitions. [2021-11-22 21:48:45,084 INFO L78 Accepts]: Start accepts. Automaton has 22503 states and 29325 transitions. Word has length 28 [2021-11-22 21:48:45,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 21:48:45,085 INFO L470 AbstractCegarLoop]: Abstraction has 22503 states and 29325 transitions. [2021-11-22 21:48:45,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 21:48:45,085 INFO L276 IsEmpty]: Start isEmpty. Operand 22503 states and 29325 transitions. [2021-11-22 21:48:45,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-22 21:48:45,086 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 21:48:45,086 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 21:48:45,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-22 21:48:45,086 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-22 21:48:45,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 21:48:45,087 INFO L85 PathProgramCache]: Analyzing trace with hash -981916976, now seen corresponding path program 1 times [2021-11-22 21:48:45,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 21:48:45,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129957858] [2021-11-22 21:48:45,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 21:48:45,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 21:48:45,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 21:48:45,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 21:48:45,407 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 21:48:45,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129957858] [2021-11-22 21:48:45,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129957858] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 21:48:45,407 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 21:48:45,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-22 21:48:45,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358584959] [2021-11-22 21:48:45,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 21:48:45,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-22 21:48:45,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 21:48:45,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-22 21:48:45,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-22 21:48:45,408 INFO L87 Difference]: Start difference. First operand 22503 states and 29325 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 21:48:47,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 21:48:47,587 INFO L93 Difference]: Finished difference Result 48372 states and 63032 transitions. [2021-11-22 21:48:47,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-22 21:48:47,588 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2021-11-22 21:48:47,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 21:48:47,660 INFO L225 Difference]: With dead ends: 48372 [2021-11-22 21:48:47,660 INFO L226 Difference]: Without dead ends: 25954 [2021-11-22 21:48:47,703 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2021-11-22 21:48:47,704 INFO L933 BasicCegarLoop]: 14668 mSDtfsCounter, 45294 mSDsluCounter, 78879 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45294 SdHoareTripleChecker+Valid, 93547 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 21:48:47,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45294 Valid, 93547 Invalid, 71 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [12 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 21:48:47,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25954 states. [2021-11-22 21:48:48,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25954 to 22477. [2021-11-22 21:48:48,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22477 states, 22439 states have (on average 1.3037122866437898) internal successors, (29254), 22444 states have internal predecessors, (29254), 20 states have call successors, (20), 12 states have call predecessors, (20), 12 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-22 21:48:49,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22477 states to 22477 states and 29294 transitions. [2021-11-22 21:48:49,022 INFO L78 Accepts]: Start accepts. Automaton has 22477 states and 29294 transitions. Word has length 38 [2021-11-22 21:48:49,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 21:48:49,022 INFO L470 AbstractCegarLoop]: Abstraction has 22477 states and 29294 transitions. [2021-11-22 21:48:49,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 21:48:49,022 INFO L276 IsEmpty]: Start isEmpty. Operand 22477 states and 29294 transitions. [2021-11-22 21:48:49,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-22 21:48:49,023 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 21:48:49,023 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 21:48:49,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-22 21:48:49,024 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-22 21:48:49,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 21:48:49,024 INFO L85 PathProgramCache]: Analyzing trace with hash -85947140, now seen corresponding path program 1 times [2021-11-22 21:48:49,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 21:48:49,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097670211] [2021-11-22 21:48:49,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 21:48:49,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 21:48:49,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 21:48:49,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 21:48:49,292 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 21:48:49,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097670211] [2021-11-22 21:48:49,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097670211] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 21:48:49,292 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 21:48:49,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 21:48:49,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33249340] [2021-11-22 21:48:49,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 21:48:49,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 21:48:49,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 21:48:49,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 21:48:49,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-22 21:48:49,293 INFO L87 Difference]: Start difference. First operand 22477 states and 29294 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 21:48:51,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 21:48:51,536 INFO L93 Difference]: Finished difference Result 40614 states and 52893 transitions. [2021-11-22 21:48:51,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 21:48:51,536 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-11-22 21:48:51,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 21:48:51,602 INFO L225 Difference]: With dead ends: 40614 [2021-11-22 21:48:51,602 INFO L226 Difference]: Without dead ends: 29416 [2021-11-22 21:48:51,630 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-22 21:48:51,631 INFO L933 BasicCegarLoop]: 19180 mSDtfsCounter, 31702 mSDsluCounter, 63023 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31702 SdHoareTripleChecker+Valid, 82203 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 21:48:51,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31702 Valid, 82203 Invalid, 33 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 21:48:51,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29416 states. [2021-11-22 21:48:52,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29416 to 22464. [2021-11-22 21:48:52,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22464 states, 22427 states have (on average 1.3037856155526821) internal successors, (29240), 22431 states have internal predecessors, (29240), 20 states have call successors, (20), 12 states have call predecessors, (20), 12 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-22 21:48:52,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22464 states to 22464 states and 29280 transitions. [2021-11-22 21:48:52,985 INFO L78 Accepts]: Start accepts. Automaton has 22464 states and 29280 transitions. Word has length 39 [2021-11-22 21:48:52,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 21:48:52,986 INFO L470 AbstractCegarLoop]: Abstraction has 22464 states and 29280 transitions. [2021-11-22 21:48:52,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 21:48:52,986 INFO L276 IsEmpty]: Start isEmpty. Operand 22464 states and 29280 transitions. [2021-11-22 21:48:52,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-22 21:48:52,986 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 21:48:52,987 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 21:48:52,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-22 21:48:52,987 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-22 21:48:52,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 21:48:52,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1769410589, now seen corresponding path program 1 times [2021-11-22 21:48:52,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 21:48:52,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740166310] [2021-11-22 21:48:52,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 21:48:52,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 21:48:53,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 21:48:53,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 21:48:53,340 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 21:48:53,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740166310] [2021-11-22 21:48:53,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740166310] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 21:48:53,341 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 21:48:53,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-22 21:48:53,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966960622] [2021-11-22 21:48:53,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 21:48:53,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-22 21:48:53,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 21:48:53,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-22 21:48:53,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-11-22 21:48:53,342 INFO L87 Difference]: Start difference. First operand 22464 states and 29280 transitions. Second operand has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 21:48:55,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 21:48:55,131 INFO L93 Difference]: Finished difference Result 33651 states and 43871 transitions. [2021-11-22 21:48:55,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-22 21:48:55,131 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2021-11-22 21:48:55,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 21:48:55,187 INFO L225 Difference]: With dead ends: 33651 [2021-11-22 21:48:55,187 INFO L226 Difference]: Without dead ends: 22454 [2021-11-22 21:48:55,215 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=119, Invalid=261, Unknown=0, NotChecked=0, Total=380 [2021-11-22 21:48:55,216 INFO L933 BasicCegarLoop]: 14663 mSDtfsCounter, 13727 mSDsluCounter, 118268 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13727 SdHoareTripleChecker+Valid, 132931 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 21:48:55,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13727 Valid, 132931 Invalid, 93 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 21:48:55,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22454 states. [2021-11-22 21:48:56,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22454 to 22454. [2021-11-22 21:48:56,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22454 states, 22417 states have (on average 1.3038765222821966) internal successors, (29229), 22421 states have internal predecessors, (29229), 20 states have call successors, (20), 12 states have call predecessors, (20), 12 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-22 21:48:56,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22454 states to 22454 states and 29269 transitions. [2021-11-22 21:48:56,568 INFO L78 Accepts]: Start accepts. Automaton has 22454 states and 29269 transitions. Word has length 40 [2021-11-22 21:48:56,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 21:48:56,569 INFO L470 AbstractCegarLoop]: Abstraction has 22454 states and 29269 transitions. [2021-11-22 21:48:56,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 21:48:56,569 INFO L276 IsEmpty]: Start isEmpty. Operand 22454 states and 29269 transitions. [2021-11-22 21:48:56,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-22 21:48:56,569 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 21:48:56,569 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 21:48:56,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-22 21:48:56,569 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-22 21:48:56,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 21:48:56,570 INFO L85 PathProgramCache]: Analyzing trace with hash 134153783, now seen corresponding path program 1 times [2021-11-22 21:48:56,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 21:48:56,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104639307] [2021-11-22 21:48:56,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 21:48:56,570 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 21:48:56,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 21:48:56,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 21:48:56,805 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 21:48:56,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104639307] [2021-11-22 21:48:56,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104639307] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 21:48:56,805 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 21:48:56,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 21:48:56,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786609982] [2021-11-22 21:48:56,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 21:48:56,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 21:48:56,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 21:48:56,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 21:48:56,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-22 21:48:56,806 INFO L87 Difference]: Start difference. First operand 22454 states and 29269 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 21:48:58,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 21:48:58,755 INFO L93 Difference]: Finished difference Result 37135 states and 48381 transitions. [2021-11-22 21:48:58,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 21:48:58,756 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-22 21:48:58,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 21:48:58,816 INFO L225 Difference]: With dead ends: 37135 [2021-11-22 21:48:58,816 INFO L226 Difference]: Without dead ends: 25931 [2021-11-22 21:48:58,843 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-22 21:48:58,844 INFO L933 BasicCegarLoop]: 19175 mSDtfsCounter, 18096 mSDsluCounter, 58586 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18097 SdHoareTripleChecker+Valid, 77761 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 21:48:58,844 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18097 Valid, 77761 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 21:48:58,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25931 states. [2021-11-22 21:49:00,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25931 to 22450. [2021-11-22 21:49:00,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22450 states, 22414 states have (on average 1.3038279646649416) internal successors, (29224), 22417 states have internal predecessors, (29224), 20 states have call successors, (20), 12 states have call predecessors, (20), 12 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-22 21:49:00,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22450 states to 22450 states and 29264 transitions. [2021-11-22 21:49:00,199 INFO L78 Accepts]: Start accepts. Automaton has 22450 states and 29264 transitions. Word has length 41 [2021-11-22 21:49:00,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 21:49:00,200 INFO L470 AbstractCegarLoop]: Abstraction has 22450 states and 29264 transitions. [2021-11-22 21:49:00,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 21:49:00,200 INFO L276 IsEmpty]: Start isEmpty. Operand 22450 states and 29264 transitions. [2021-11-22 21:49:00,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-22 21:49:00,200 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 21:49:00,200 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 21:49:00,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-22 21:49:00,201 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-22 21:49:00,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 21:49:00,201 INFO L85 PathProgramCache]: Analyzing trace with hash 2130897912, now seen corresponding path program 1 times [2021-11-22 21:49:00,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 21:49:00,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194835881] [2021-11-22 21:49:00,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 21:49:00,201 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 21:49:00,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 21:49:00,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 21:49:00,469 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 21:49:00,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194835881] [2021-11-22 21:49:00,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194835881] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 21:49:00,469 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 21:49:00,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-22 21:49:00,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393179978] [2021-11-22 21:49:00,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 21:49:00,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-22 21:49:00,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 21:49:00,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-22 21:49:00,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-22 21:49:00,470 INFO L87 Difference]: Start difference. First operand 22450 states and 29264 transitions. Second operand has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 21:49:02,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 21:49:02,185 INFO L93 Difference]: Finished difference Result 33641 states and 43857 transitions. [2021-11-22 21:49:02,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 21:49:02,185 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2021-11-22 21:49:02,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 21:49:02,239 INFO L225 Difference]: With dead ends: 33641 [2021-11-22 21:49:02,239 INFO L226 Difference]: Without dead ends: 22449 [2021-11-22 21:49:02,267 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2021-11-22 21:49:02,268 INFO L933 BasicCegarLoop]: 19161 mSDtfsCounter, 31746 mSDsluCounter, 78776 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31746 SdHoareTripleChecker+Valid, 97937 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 21:49:02,268 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31746 Valid, 97937 Invalid, 68 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [12 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 21:49:02,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22449 states. [2021-11-22 21:49:03,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22449 to 22447. [2021-11-22 21:49:03,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22447 states, 22411 states have (on average 1.303779394047566) internal successors, (29219), 22414 states have internal predecessors, (29219), 20 states have call successors, (20), 12 states have call predecessors, (20), 12 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-22 21:49:03,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22447 states to 22447 states and 29259 transitions. [2021-11-22 21:49:03,676 INFO L78 Accepts]: Start accepts. Automaton has 22447 states and 29259 transitions. Word has length 42 [2021-11-22 21:49:03,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 21:49:03,677 INFO L470 AbstractCegarLoop]: Abstraction has 22447 states and 29259 transitions. [2021-11-22 21:49:03,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 21:49:03,677 INFO L276 IsEmpty]: Start isEmpty. Operand 22447 states and 29259 transitions. [2021-11-22 21:49:03,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-22 21:49:03,677 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 21:49:03,677 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 21:49:03,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-22 21:49:03,678 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-22 21:49:03,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 21:49:03,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1478267987, now seen corresponding path program 1 times [2021-11-22 21:49:03,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 21:49:03,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820926328] [2021-11-22 21:49:03,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 21:49:03,679 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 21:49:03,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 21:49:03,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 21:49:03,861 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 21:49:03,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820926328] [2021-11-22 21:49:03,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820926328] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 21:49:03,862 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 21:49:03,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 21:49:03,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950516856] [2021-11-22 21:49:03,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 21:49:03,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 21:49:03,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 21:49:03,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 21:49:03,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 21:49:03,863 INFO L87 Difference]: Start difference. First operand 22447 states and 29259 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 21:49:05,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 21:49:05,239 INFO L93 Difference]: Finished difference Result 22449 states and 29260 transitions. [2021-11-22 21:49:05,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 21:49:05,240 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2021-11-22 21:49:05,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 21:49:05,283 INFO L225 Difference]: With dead ends: 22449 [2021-11-22 21:49:05,283 INFO L226 Difference]: Without dead ends: 22445 [2021-11-22 21:49:05,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 21:49:05,292 INFO L933 BasicCegarLoop]: 14659 mSDtfsCounter, 18057 mSDsluCounter, 39423 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18058 SdHoareTripleChecker+Valid, 54082 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 21:49:05,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18058 Valid, 54082 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 21:49:05,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22445 states. [2021-11-22 21:49:06,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22445 to 22443. [2021-11-22 21:49:06,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22443 states, 22408 states have (on average 1.3037754373438057) internal successors, (29215), 22410 states have internal predecessors, (29215), 20 states have call successors, (20), 12 states have call predecessors, (20), 12 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-22 21:49:06,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22443 states to 22443 states and 29255 transitions. [2021-11-22 21:49:06,605 INFO L78 Accepts]: Start accepts. Automaton has 22443 states and 29255 transitions. Word has length 44 [2021-11-22 21:49:06,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 21:49:06,605 INFO L470 AbstractCegarLoop]: Abstraction has 22443 states and 29255 transitions. [2021-11-22 21:49:06,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 21:49:06,605 INFO L276 IsEmpty]: Start isEmpty. Operand 22443 states and 29255 transitions. [2021-11-22 21:49:06,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-22 21:49:06,606 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 21:49:06,606 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 21:49:06,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-22 21:49:06,606 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-22 21:49:06,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 21:49:06,607 INFO L85 PathProgramCache]: Analyzing trace with hash -611187774, now seen corresponding path program 1 times [2021-11-22 21:49:06,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 21:49:06,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241001283] [2021-11-22 21:49:06,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 21:49:06,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 21:49:06,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 21:49:06,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 21:49:06,744 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 21:49:06,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241001283] [2021-11-22 21:49:06,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241001283] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 21:49:06,744 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 21:49:06,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 21:49:06,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730362614] [2021-11-22 21:49:06,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 21:49:06,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 21:49:06,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 21:49:06,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 21:49:06,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 21:49:06,746 INFO L87 Difference]: Start difference. First operand 22443 states and 29255 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 21:49:08,774 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 21:49:10,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 21:49:10,113 INFO L93 Difference]: Finished difference Result 22445 states and 29256 transitions. [2021-11-22 21:49:10,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 21:49:10,114 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2021-11-22 21:49:10,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 21:49:10,164 INFO L225 Difference]: With dead ends: 22445 [2021-11-22 21:49:10,165 INFO L226 Difference]: Without dead ends: 22433 [2021-11-22 21:49:10,177 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 21:49:10,178 INFO L933 BasicCegarLoop]: 14666 mSDtfsCounter, 14606 mSDsluCounter, 14618 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14606 SdHoareTripleChecker+Valid, 29284 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-22 21:49:10,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14606 Valid, 29284 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2021-11-22 21:49:10,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22433 states. [2021-11-22 21:49:11,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22433 to 11245. [2021-11-22 21:49:11,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11245 states, 11228 states have (on average 1.303081581759886) internal successors, (14631), 11228 states have internal predecessors, (14631), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-22 21:49:11,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11245 states to 11245 states and 14651 transitions. [2021-11-22 21:49:11,217 INFO L78 Accepts]: Start accepts. Automaton has 11245 states and 14651 transitions. Word has length 46 [2021-11-22 21:49:11,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 21:49:11,217 INFO L470 AbstractCegarLoop]: Abstraction has 11245 states and 14651 transitions. [2021-11-22 21:49:11,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 21:49:11,217 INFO L276 IsEmpty]: Start isEmpty. Operand 11245 states and 14651 transitions. [2021-11-22 21:49:11,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-22 21:49:11,218 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 21:49:11,218 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 21:49:11,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-22 21:49:11,218 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-22 21:49:11,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 21:49:11,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1964050597, now seen corresponding path program 1 times [2021-11-22 21:49:11,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 21:49:11,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070996019] [2021-11-22 21:49:11,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 21:49:11,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 21:49:11,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 21:49:11,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 21:49:11,347 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 21:49:11,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070996019] [2021-11-22 21:49:11,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070996019] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 21:49:11,347 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 21:49:11,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 21:49:11,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805887079] [2021-11-22 21:49:11,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 21:49:11,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 21:49:11,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 21:49:11,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 21:49:11,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 21:49:11,349 INFO L87 Difference]: Start difference. First operand 11245 states and 14651 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 21:49:13,373 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []