/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 13:44:00,640 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 13:44:00,643 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 13:44:00,702 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 13:44:00,703 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 13:44:00,707 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 13:44:00,711 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 13:44:00,721 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 13:44:00,725 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 13:44:00,732 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 13:44:00,734 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 13:44:00,736 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 13:44:00,736 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 13:44:00,741 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 13:44:00,743 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 13:44:00,745 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 13:44:00,747 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 13:44:00,751 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 13:44:00,766 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 13:44:00,775 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 13:44:00,777 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 13:44:00,780 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 13:44:00,782 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 13:44:00,785 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 13:44:00,793 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 13:44:00,797 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 13:44:00,797 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 13:44:00,799 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 13:44:00,799 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 13:44:00,800 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 13:44:00,800 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 13:44:00,801 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 13:44:00,802 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 13:44:00,803 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 13:44:00,805 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 13:44:00,805 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 13:44:00,806 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 13:44:00,806 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 13:44:00,807 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 13:44:00,808 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 13:44:00,809 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 13:44:00,811 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 13:44:00,841 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 13:44:00,841 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 13:44:00,843 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 13:44:00,843 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 13:44:00,844 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 13:44:00,844 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 13:44:00,844 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 13:44:00,844 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 13:44:00,845 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 13:44:00,845 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 13:44:00,845 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 13:44:00,845 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 13:44:00,846 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 13:44:00,846 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 13:44:00,846 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 13:44:00,847 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 13:44:00,847 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 13:44:00,847 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 13:44:00,847 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 13:44:00,848 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 13:44:00,848 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 13:44:00,848 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 13:44:00,848 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 13:44:00,849 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 13:44:00,849 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 13:44:00,849 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 13:44:01,234 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 13:44:01,262 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 13:44:01,265 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 13:44:01,267 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 13:44:01,268 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 13:44:01,269 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.cil.out.i [2020-12-22 13:44:01,361 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73aafc959/5ac841c6dd94492eaa5a888003ab031e/FLAGf6fb939bd [2020-12-22 13:44:02,378 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 13:44:02,379 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.cil.out.i [2020-12-22 13:44:02,433 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73aafc959/5ac841c6dd94492eaa5a888003ab031e/FLAGf6fb939bd [2020-12-22 13:44:02,889 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73aafc959/5ac841c6dd94492eaa5a888003ab031e [2020-12-22 13:44:02,892 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 13:44:02,894 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 13:44:02,896 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 13:44:02,897 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 13:44:02,901 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 13:44:02,902 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:44:02" (1/1) ... [2020-12-22 13:44:02,903 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b443f5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:44:02, skipping insertion in model container [2020-12-22 13:44:02,904 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:44:02" (1/1) ... [2020-12-22 13:44:02,913 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 13:44:03,051 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 13:44:04,137 WARN L226 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-validator-v0.6/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.cil.out.i[88044,88057] [2020-12-22 13:44:04,898 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 13:44:04,972 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 13:44:05,124 WARN L226 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-validator-v0.6/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.cil.out.i[88044,88057] [2020-12-22 13:44:05,374 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 13:44:05,788 INFO L208 MainTranslator]: Completed translation [2020-12-22 13:44:05,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:44:05 WrapperNode [2020-12-22 13:44:05,790 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 13:44:05,792 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 13:44:05,793 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 13:44:05,793 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 13:44:05,802 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:44:05" (1/1) ... [2020-12-22 13:44:05,921 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:44:05" (1/1) ... [2020-12-22 13:44:07,729 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 13:44:07,732 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 13:44:07,733 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 13:44:07,733 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 13:44:07,744 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:44:05" (1/1) ... [2020-12-22 13:44:07,745 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:44:05" (1/1) ... [2020-12-22 13:44:08,282 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:44:05" (1/1) ... [2020-12-22 13:44:08,283 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:44:05" (1/1) ... [2020-12-22 13:44:09,887 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:44:05" (1/1) ... [2020-12-22 13:44:10,095 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:44:05" (1/1) ... [2020-12-22 13:44:10,259 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:44:05" (1/1) ... [2020-12-22 13:44:10,942 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 13:44:10,945 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 13:44:10,946 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 13:44:10,946 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 13:44:10,947 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:44:05" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 13:44:11,062 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-12-22 13:44:11,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-12-22 13:44:11,062 INFO L130 BoogieDeclarations]: Found specification of procedure printer_soft_reset [2020-12-22 13:44:11,063 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_soft_reset [2020-12-22 13:44:11,063 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 13:44:11,063 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 13:44:11,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 13:44:11,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 13:44:11,064 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-12-22 13:44:11,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-12-22 13:44:11,065 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 13:44:11,066 INFO L130 BoogieDeclarations]: Found specification of procedure set_printer_interface [2020-12-22 13:44:11,067 INFO L138 BoogieDeclarations]: Found implementation of procedure set_printer_interface [2020-12-22 13:44:11,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 13:44:11,067 INFO L130 BoogieDeclarations]: Found specification of procedure set_interface [2020-12-22 13:44:11,067 INFO L138 BoogieDeclarations]: Found implementation of procedure set_interface [2020-12-22 13:44:11,067 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 13:44:11,067 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2020-12-22 13:44:11,068 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_alloc_notrace [2020-12-22 13:44:11,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 13:44:11,068 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2020-12-22 13:44:11,068 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_enable [2020-12-22 13:44:11,068 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_enable [2020-12-22 13:44:11,068 INFO L130 BoogieDeclarations]: Found specification of procedure printer_setup [2020-12-22 13:44:11,069 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_setup [2020-12-22 13:44:11,069 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2020-12-22 13:44:11,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2020-12-22 13:44:11,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 13:44:11,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 13:44:11,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 13:45:26,227 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 13:45:26,228 INFO L299 CfgBuilder]: Removed 14253 assume(true) statements. [2020-12-22 13:45:26,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:45:26 BoogieIcfgContainer [2020-12-22 13:45:26,243 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 13:45:26,245 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 13:45:26,245 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 13:45:26,249 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 13:45:26,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 01:44:02" (1/3) ... [2020-12-22 13:45:26,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66491cbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:45:26, skipping insertion in model container [2020-12-22 13:45:26,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:44:05" (2/3) ... [2020-12-22 13:45:26,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66491cbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:45:26, skipping insertion in model container [2020-12-22 13:45:26,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:45:26" (3/3) ... [2020-12-22 13:45:26,253 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.cil.out.i [2020-12-22 13:45:26,261 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 13:45:26,272 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 19 error locations. [2020-12-22 13:45:26,295 INFO L253 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2020-12-22 13:45:26,368 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 13:45:26,368 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 13:45:26,368 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 13:45:26,368 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 13:45:26,368 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 13:45:26,368 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 13:45:26,369 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 13:45:26,369 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 13:45:26,535 INFO L276 IsEmpty]: Start isEmpty. Operand 11954 states. [2020-12-22 13:45:26,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-22 13:45:26,543 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:45:26,544 INFO L422 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] [2020-12-22 13:45:26,545 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:45:26,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:45:26,553 INFO L82 PathProgramCache]: Analyzing trace with hash -1301554369, now seen corresponding path program 1 times [2020-12-22 13:45:26,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:45:26,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152639549] [2020-12-22 13:45:26,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:45:27,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:45:27,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:45:27,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152639549] [2020-12-22 13:45:27,368 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:45:27,368 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:45:27,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831672115] [2020-12-22 13:45:27,375 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:45:27,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:45:27,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:45:27,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:45:27,393 INFO L87 Difference]: Start difference. First operand 11954 states. Second operand 3 states. [2020-12-22 13:45:30,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:45:30,929 INFO L93 Difference]: Finished difference Result 31641 states and 44017 transitions. [2020-12-22 13:45:30,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:45:30,932 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-12-22 13:45:30,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:45:31,074 INFO L225 Difference]: With dead ends: 31641 [2020-12-22 13:45:31,075 INFO L226 Difference]: Without dead ends: 19678 [2020-12-22 13:45:31,147 INFO L677 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 [2020-12-22 13:45:31,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19678 states. [2020-12-22 13:45:32,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19678 to 19678. [2020-12-22 13:45:32,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19678 states. [2020-12-22 13:45:32,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19678 states to 19678 states and 26673 transitions. [2020-12-22 13:45:32,210 INFO L78 Accepts]: Start accepts. Automaton has 19678 states and 26673 transitions. Word has length 24 [2020-12-22 13:45:32,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:45:32,212 INFO L481 AbstractCegarLoop]: Abstraction has 19678 states and 26673 transitions. [2020-12-22 13:45:32,212 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:45:32,212 INFO L276 IsEmpty]: Start isEmpty. Operand 19678 states and 26673 transitions. [2020-12-22 13:45:32,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-22 13:45:32,221 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:45:32,221 INFO L422 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] [2020-12-22 13:45:32,222 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 13:45:32,223 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:45:32,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:45:32,225 INFO L82 PathProgramCache]: Analyzing trace with hash 1536576598, now seen corresponding path program 1 times [2020-12-22 13:45:32,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:45:32,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385100471] [2020-12-22 13:45:32,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:45:32,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:45:32,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:45:32,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385100471] [2020-12-22 13:45:32,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:45:32,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 13:45:32,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404962959] [2020-12-22 13:45:32,610 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:45:32,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:45:32,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:45:32,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:45:32,612 INFO L87 Difference]: Start difference. First operand 19678 states and 26673 transitions. Second operand 3 states. [2020-12-22 13:45:33,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:45:33,835 INFO L93 Difference]: Finished difference Result 39256 states and 53239 transitions. [2020-12-22 13:45:33,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:45:33,836 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-12-22 13:45:33,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:45:34,035 INFO L225 Difference]: With dead ends: 39256 [2020-12-22 13:45:34,036 INFO L226 Difference]: Without dead ends: 39224 [2020-12-22 13:45:34,050 INFO L677 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 [2020-12-22 13:45:34,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39224 states. [2020-12-22 13:45:35,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39224 to 39220. [2020-12-22 13:45:35,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39220 states. [2020-12-22 13:45:35,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39220 states to 39220 states and 53203 transitions. [2020-12-22 13:45:35,566 INFO L78 Accepts]: Start accepts. Automaton has 39220 states and 53203 transitions. Word has length 27 [2020-12-22 13:45:35,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:45:35,566 INFO L481 AbstractCegarLoop]: Abstraction has 39220 states and 53203 transitions. [2020-12-22 13:45:35,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:45:35,568 INFO L276 IsEmpty]: Start isEmpty. Operand 39220 states and 53203 transitions. [2020-12-22 13:45:35,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-22 13:45:35,571 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:45:35,571 INFO L422 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] [2020-12-22 13:45:35,573 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 13:45:35,574 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:45:35,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:45:35,583 INFO L82 PathProgramCache]: Analyzing trace with hash 389265743, now seen corresponding path program 1 times [2020-12-22 13:45:35,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:45:35,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191762083] [2020-12-22 13:45:35,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:45:35,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:45:35,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:45:35,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191762083] [2020-12-22 13:45:35,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:45:35,886 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 13:45:35,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234811916] [2020-12-22 13:45:35,886 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:45:35,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:45:35,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:45:35,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:45:35,899 INFO L87 Difference]: Start difference. First operand 39220 states and 53203 transitions. Second operand 3 states. [2020-12-22 13:45:37,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:45:37,954 INFO L93 Difference]: Finished difference Result 117512 states and 159453 transitions. [2020-12-22 13:45:37,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:45:37,954 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-12-22 13:45:37,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:45:38,309 INFO L225 Difference]: With dead ends: 117512 [2020-12-22 13:45:38,310 INFO L226 Difference]: Without dead ends: 78349 [2020-12-22 13:45:38,414 INFO L677 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 [2020-12-22 13:45:38,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78349 states. [2020-12-22 13:45:41,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78349 to 78329. [2020-12-22 13:45:41,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78329 states. [2020-12-22 13:45:41,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78329 states to 78329 states and 106297 transitions. [2020-12-22 13:45:41,846 INFO L78 Accepts]: Start accepts. Automaton has 78329 states and 106297 transitions. Word has length 28 [2020-12-22 13:45:41,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:45:41,847 INFO L481 AbstractCegarLoop]: Abstraction has 78329 states and 106297 transitions. [2020-12-22 13:45:41,848 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:45:41,848 INFO L276 IsEmpty]: Start isEmpty. Operand 78329 states and 106297 transitions. [2020-12-22 13:45:41,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-22 13:45:41,851 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:45:41,851 INFO L422 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] [2020-12-22 13:45:41,851 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 13:45:41,851 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:45:41,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:45:41,852 INFO L82 PathProgramCache]: Analyzing trace with hash -513397760, now seen corresponding path program 1 times [2020-12-22 13:45:41,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:45:41,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154396531] [2020-12-22 13:45:41,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:45:42,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:45:42,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:45:42,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154396531] [2020-12-22 13:45:42,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:45:42,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 13:45:42,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437884867] [2020-12-22 13:45:42,240 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:45:42,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:45:42,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:45:42,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:45:42,243 INFO L87 Difference]: Start difference. First operand 78329 states and 106297 transitions. Second operand 3 states. [2020-12-22 13:45:45,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:45:45,789 INFO L93 Difference]: Finished difference Result 234856 states and 318752 transitions. [2020-12-22 13:45:45,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:45:45,790 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2020-12-22 13:45:45,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:45:46,516 INFO L225 Difference]: With dead ends: 234856 [2020-12-22 13:45:46,517 INFO L226 Difference]: Without dead ends: 156582 [2020-12-22 13:45:46,657 INFO L677 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 [2020-12-22 13:45:46,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156582 states. [2020-12-22 13:45:51,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156582 to 156545. [2020-12-22 13:45:51,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156545 states. [2020-12-22 13:45:51,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156545 states to 156545 states and 212482 transitions. [2020-12-22 13:45:51,755 INFO L78 Accepts]: Start accepts. Automaton has 156545 states and 212482 transitions. Word has length 37 [2020-12-22 13:45:51,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:45:51,755 INFO L481 AbstractCegarLoop]: Abstraction has 156545 states and 212482 transitions. [2020-12-22 13:45:51,756 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:45:51,756 INFO L276 IsEmpty]: Start isEmpty. Operand 156545 states and 212482 transitions. [2020-12-22 13:45:51,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-22 13:45:51,758 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:45:51,758 INFO L422 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] [2020-12-22 13:45:51,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 13:45:51,759 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:45:51,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:45:51,760 INFO L82 PathProgramCache]: Analyzing trace with hash 666285678, now seen corresponding path program 1 times [2020-12-22 13:45:51,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:45:51,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594935122] [2020-12-22 13:45:51,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:45:52,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:45:52,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:45:52,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594935122] [2020-12-22 13:45:52,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:45:52,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 13:45:52,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934767506] [2020-12-22 13:45:52,302 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 13:45:52,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:45:52,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 13:45:52,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 13:45:52,304 INFO L87 Difference]: Start difference. First operand 156545 states and 212482 transitions. Second operand 8 states. [2020-12-22 13:46:04,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:46:04,991 INFO L93 Difference]: Finished difference Result 544113 states and 737675 transitions. [2020-12-22 13:46:04,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-22 13:46:04,997 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 39 [2020-12-22 13:46:04,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:46:06,291 INFO L225 Difference]: With dead ends: 544113 [2020-12-22 13:46:06,291 INFO L226 Difference]: Without dead ends: 387625 [2020-12-22 13:46:06,938 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2020-12-22 13:46:07,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387625 states. [2020-12-22 13:46:13,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387625 to 156585. [2020-12-22 13:46:13,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156585 states. [2020-12-22 13:46:13,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156585 states to 156585 states and 212528 transitions. [2020-12-22 13:46:13,877 INFO L78 Accepts]: Start accepts. Automaton has 156585 states and 212528 transitions. Word has length 39 [2020-12-22 13:46:13,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:46:13,877 INFO L481 AbstractCegarLoop]: Abstraction has 156585 states and 212528 transitions. [2020-12-22 13:46:13,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 13:46:13,878 INFO L276 IsEmpty]: Start isEmpty. Operand 156585 states and 212528 transitions. [2020-12-22 13:46:13,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-22 13:46:13,882 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:46:13,882 INFO L422 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] [2020-12-22 13:46:13,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 13:46:13,883 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:46:13,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:46:13,883 INFO L82 PathProgramCache]: Analyzing trace with hash -395841258, now seen corresponding path program 1 times [2020-12-22 13:46:13,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:46:13,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570321012] [2020-12-22 13:46:13,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:46:14,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:46:14,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:46:14,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570321012] [2020-12-22 13:46:14,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:46:14,710 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 13:46:14,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586179332] [2020-12-22 13:46:14,710 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 13:46:14,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:46:14,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 13:46:14,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-12-22 13:46:14,712 INFO L87 Difference]: Start difference. First operand 156585 states and 212528 transitions. Second operand 10 states. [2020-12-22 13:46:38,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:46:38,547 INFO L93 Difference]: Finished difference Result 557281 states and 755304 transitions. [2020-12-22 13:46:38,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-12-22 13:46:38,550 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 45 [2020-12-22 13:46:38,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:46:39,752 INFO L225 Difference]: With dead ends: 557281 [2020-12-22 13:46:39,753 INFO L226 Difference]: Without dead ends: 400753 [2020-12-22 13:46:39,988 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 355 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=356, Invalid=1126, Unknown=0, NotChecked=0, Total=1482 [2020-12-22 13:46:40,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400753 states. [2020-12-22 13:46:47,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400753 to 156571. [2020-12-22 13:46:47,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156571 states. [2020-12-22 13:46:48,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156571 states to 156571 states and 212508 transitions. [2020-12-22 13:46:48,375 INFO L78 Accepts]: Start accepts. Automaton has 156571 states and 212508 transitions. Word has length 45 [2020-12-22 13:46:48,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:46:48,376 INFO L481 AbstractCegarLoop]: Abstraction has 156571 states and 212508 transitions. [2020-12-22 13:46:48,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 13:46:48,376 INFO L276 IsEmpty]: Start isEmpty. Operand 156571 states and 212508 transitions. [2020-12-22 13:46:48,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-22 13:46:48,380 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:46:48,380 INFO L422 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] [2020-12-22 13:46:48,380 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 13:46:48,380 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:46:48,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:46:48,381 INFO L82 PathProgramCache]: Analyzing trace with hash 252105834, now seen corresponding path program 1 times [2020-12-22 13:46:48,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:46:48,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759664140] [2020-12-22 13:46:48,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:46:48,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:46:48,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:46:48,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759664140] [2020-12-22 13:46:48,945 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:46:48,945 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:46:48,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186838417] [2020-12-22 13:46:48,945 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:46:48,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:46:48,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:46:48,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:46:48,946 INFO L87 Difference]: Start difference. First operand 156571 states and 212508 transitions. Second operand 3 states. [2020-12-22 13:46:57,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:46:57,033 INFO L93 Difference]: Finished difference Result 313099 states and 424960 transitions. [2020-12-22 13:46:57,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:46:57,033 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-12-22 13:46:57,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:46:57,776 INFO L225 Difference]: With dead ends: 313099 [2020-12-22 13:46:57,776 INFO L226 Difference]: Without dead ends: 156585 [2020-12-22 13:46:57,950 INFO L677 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 [2020-12-22 13:46:58,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156585 states. [2020-12-22 13:47:06,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156585 to 156561. [2020-12-22 13:47:06,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156561 states. [2020-12-22 13:47:07,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156561 states to 156561 states and 212486 transitions. [2020-12-22 13:47:07,018 INFO L78 Accepts]: Start accepts. Automaton has 156561 states and 212486 transitions. Word has length 46 [2020-12-22 13:47:07,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:47:07,018 INFO L481 AbstractCegarLoop]: Abstraction has 156561 states and 212486 transitions. [2020-12-22 13:47:07,018 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:47:07,018 INFO L276 IsEmpty]: Start isEmpty. Operand 156561 states and 212486 transitions. [2020-12-22 13:47:07,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-12-22 13:47:07,023 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:47:07,024 INFO L422 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] [2020-12-22 13:47:07,024 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 13:47:07,024 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:47:07,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:47:07,025 INFO L82 PathProgramCache]: Analyzing trace with hash -145261176, now seen corresponding path program 1 times [2020-12-22 13:47:07,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:47:07,026 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359474937] [2020-12-22 13:47:07,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:47:07,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:47:07,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:47:07,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359474937] [2020-12-22 13:47:07,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:47:07,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 13:47:07,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626173957] [2020-12-22 13:47:07,801 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 13:47:07,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:47:07,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 13:47:07,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-12-22 13:47:07,805 INFO L87 Difference]: Start difference. First operand 156561 states and 212486 transitions. Second operand 10 states.